Indoor body builder

Abstract

The utility model provides indoor fitness equipment, and belongs to the technical field of fitness equipment. The body builder solves the problem that an existing body builder can only be used for pull-up exercise or pull-out exercise and the like. An indoor body builder comprises a fixed pipe and a rotating pipe which is arranged on the outer side of the fixed pipe in a sleeving mode and can rotate, a fixed base is fixed to the fixed pipe, a main ratchet wheel is fixed to the rotating pipe, a main pawl meshed with the main ratchet wheel is elastically hinged to the fixed base, a belt disc is fixed to the rotating pipe, a body building belt is wound around the belt disc, and a coil spring is arranged between the fixed pipe and the rotating pipe. An unlocking mechanism capable of enabling the main pawl to be separated from the main ratchet wheel and keeping the separation state is arranged on the fixing base, a damper capable of generating damping force when the rotating pipe rotates is further arranged between the rotating pipe and the fixing pipe, and an adjusting mechanism for adjusting the damping force is arranged on the damper. The indoor body builder is suitable for pull-up exercise and pull-out exercise.

Description

Technical Field

[0001] This utility model belongs to the field of fitness equipment technology, and relates to an indoor fitness machine. Background Technology

[0002] To improve their physical fitness, people often engage in fitness exercises, some of which require the use of fitness equipment, such as rings for pull-ups and resistance bands for traction exercises.

[0003] For gymnastic rings, a horizontal bar is typically attached to a fixed frame, a fixed rope is connected to the rings, and the rope is connected to the horizontal bar. The rings are then suspended from the horizontal bar. For resistance bands, they generally consist of an elastic band, one end of which is fixed to a fixed frame, and the other end is connected to a pull ring. Both types of fitness equipment are single-function; gymnastic rings are used for pull-ups but not for lat pulldowns, and similarly, resistance bands are used for lat pulldowns but not pull-ups. Therefore, users need to use different equipment to perform pull-ups and lat pulldowns, and the lack of either equipment prevents them from performing the corresponding exercise, making it inconvenient. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing an indoor fitness device that solves the technical problem of how to make the fitness device suitable for both pull-up exercises and traction exercises.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] An indoor fitness device includes a fixed tube, characterized in that it further includes a rotating tube fitted outside the fixed tube and capable of rotation. A fixed seat is fixed on the fixed tube, a main ratchet is fixed on the rotating tube, a main pawl that engages with the main ratchet is elastically hinged to the fixed seat, a belt reel is fixed on the rotating tube, a fitness belt is wound on the belt reel, a coil spring is provided between the fixed tube and the rotating tube, an unlocking mechanism is provided on the fixed seat that enables the main pawl to disengage from the main ratchet and remain in a disengaged state, and a damper that generates damping force when the rotating tube rotates is also provided between the rotating tube and the fixed tube, and an adjustment mechanism for adjusting the damping force is provided on the damper.

[0007] The fitness belt is equipped with rings. During pull-ups, the unlocking mechanism disengages the main pawl from the main ratchet and keeps it disengaged. The damping force of the damper is adjusted to its minimum via the adjustment mechanism. Then, the fitness belt is pulled, causing the belt reel and rotating tube to rotate. The coil spring contracts, generating a restoring force. Once the fitness belt reaches the desired length, the main pawl re-engages with the main ratchet, and the rotating tube locks in place, allowing for pull-ups. After completing the pull-ups, the unlocking mechanism disengages the main pawl from the main ratchet. Under the action of the coil spring, the rotating tube rotates in the opposite direction, causing the fitness belt to rewind onto the belt reel.

[0008] During the pull-out exercise, the unlocking mechanism disengages the main pawl from the main ratchet and keeps it in this disengaged state. The damping force of the damper is adjusted to suit the pull-out exercise using the adjustment mechanism. Then, the exercise belt is pulled forcefully, causing the belt reel and rotating tube to rotate. The damper generates damping force, and simultaneously, the coil spring contracts, generating a restoring force. The resistance generated by the coil spring contraction also provides some resistance for the pull-out exercise. Then, while holding the exercise belt, the force is released. The rotating tube rotates in the opposite direction under the restoring force of the coil spring, and the exercise belt winds back onto the belt reel. This process of pulling the exercise belt back and forth is repeated. After the pull-out exercise is completed, the exercise belt is completely released. Under the action of the coil spring, the rotating tube rotates, causing the exercise belt to wind back onto the belt reel.

[0009] Therefore, this indoor fitness equipment is suitable for both pull-up exercises and traction exercises. One piece of equipment can be used for two types of exercise, making it convenient to use.

[0010] In the aforementioned indoor fitness equipment, the main pawl is rod-shaped and located on one side of the main ratchet. One end of the main pawl is hinged to the fixed base. The unlocking mechanism can act on the other end of the main pawl and drive the main pawl to swing away from the main ratchet. The main pawl has a pawl portion in the middle that protrudes toward the main ratchet and engages with the main ratchet. A main spring that can drive the main pawl to swing toward the main ratchet is provided between the main pawl and the fixed base.

[0011] During unlocking, the unlocking mechanism acts on the main pawl, driving it to swing away from the main ratchet, disengaging the pawl from the main ratchet and releasing the locking state of the rotating tube. When it is necessary to re-engage the main pawl with the main ratchet, the unlocking mechanism releases the main pawl. Under the elastic force of the main spring, the main pawl swings towards the main ratchet, engaging with it, making operation convenient.

[0012] In the aforementioned indoor fitness equipment, the main pawl is located below the main ratchet, and the unlocking mechanism includes a pull rope and a fixing hook. The pull rope is fixedly connected to the other end of the main pawl, and the fixing hook is fixedly connected to the fixed base. The pull rope has a fixing ring that can hook onto the fixing hook when pulled downwards.

[0013] To unlock, pull the rope downwards. The main pawl swings downwards, disengaging from the main ratchet, releasing the locking mechanism of the rotating tube. Then, hook the rope's retaining loop onto the retaining hook to keep the main pawl disengaged, thus keeping the rotating tube unlocked. At this point, the fitness belt can be pulled. To re-engage the main pawl with the main ratchet, disengage the rope's retaining loop from the retaining hook. Under the spring's force, the main pawl swings upwards, engaging the main ratchet. Operation is convenient.

[0014] In the aforementioned indoor fitness equipment, a limiting member is threadedly or rotatably connected to the fixed base, and the limiting member can abut against the main pawl to keep the main pawl engaged with the main ratchet.

[0015] When the fitness belt does not need to be pulled out, rotate the limiting member so that it abuts against the main pawl. The main pawl and the main ratchet are locked in the meshing state to prevent the rotating tube from rotating and affecting the safety of use.

[0016] In the aforementioned indoor fitness equipment, the unlocking mechanism includes an unlocking ratchet rotatably connected to a fixed base and located on one side of the main ratchet. The fixed base is connected to an unlocking pawl that engages with the unlocking ratchet. The end face of the unlocking ratchet has several driving parts arranged circumferentially and spaced apart. Two adjacent driving parts are separated by two ratchet teeth of the unlocking ratchet. The driving parts can abut against the main pawl and drive the main pawl to disengage from the main ratchet.

[0017] When the unlocking ratchet is rotated by one tooth, the drive unit abuts against the main pawl, disengaging the main pawl from the main ratchet, allowing the fitness belt to be pulled out. When the unlocking ratchet is rotated another tooth, the drive unit disengages from the main pawl, and the main pawl re-engages with the main ratchet under the action of elasticity. In this way, the engagement state of the main pawl and the main ratchet can be changed by rotating the unlocking ratchet, making it convenient to use.

[0018] In the aforementioned indoor fitness equipment, the unlocking mechanism further includes a reciprocating swing drive plate. A spindle is fixed on the fixed base. One end of the drive plate and the unlocking ratchet are both mounted on the spindle. The other end of the drive plate is connected to a pull rope. A return spring is provided between the drive plate and the fixed base. The middle of the drive plate is elastically hinged with a drive pawl that engages with the unlocking ratchet. Alternatively, the end face of the unlocking ratchet facing the drive plate has several circumferentially arranged triangular grooves. The triangular grooves correspond one-to-one with the ratchet teeth of the unlocking ratchet. The drive plate has triangular blocks that are inserted into the triangular grooves.

[0019] Pulling the cord causes the drive plate to swing around the spindle, driving the pawl to rotate the unlocking ratchet by one tooth angle. Releasing the cord causes the drive plate to swing back to its original position under the action of the return spring. Due to the unidirectional transmission between the unlocking ratchet and the drive pawl, the unlocking ratchet remains stationary, while the drive pawl slides to one tooth of the unlocking ratchet and engages with the adjacent tooth. Thus, each pull of the cord rotates the unlocking ratchet by one tooth angle, thereby changing the engagement state of the main pawl and the main ratchet, making it convenient to use.

[0020] Alternatively, pulling the rope causes the drive plate to swing around the spindle. The triangular block acts on the unlocking ratchet, driving it to rotate by one ratchet tooth angle. Releasing the rope then causes the drive plate to swing back to its original position under the action of the return spring. Due to the unidirectional transmission action of the triangular block and its groove, the unlocking ratchet remains stationary, and the triangular block disengages from one groove and engages with another adjacent groove. Thus, each pull of the rope causes the unlocking ratchet to rotate by one ratchet tooth angle, thereby changing the engagement state of the main pawl and the main ratchet, making it convenient to use.

[0021] In the aforementioned indoor fitness equipment, a limiting plate is fixed on the fixed base, a limiting groove is formed on the limiting plate, and a limiting protrusion is inserted into the limiting groove on the drive plate. When the limiting protrusion slides from one end of the limiting groove to the other end, the unlocking ratchet can rotate by the angle of a ratchet tooth.

[0022] The combination of the limiting groove and the limiting protrusion is used to limit the swing angle of the drive plate, so that the drive plate swings back and forth once, unlocking the ratchet to rotate one tooth angle, thereby facilitating the change of the engagement state of the main pawl and the main ratchet.

[0023] In the aforementioned indoor fitness equipment, the damper includes a one-way wheel fitted and fixed on a rotating tube, a damping belt wrapped around the outer periphery of the one-way wheel, a connecting plate fixedly connected to the fixed base, one end of the damping belt fixed to the connecting plate, and an adjustment mechanism including a screw fixedly connected to the other end of the damping belt. The screw passes through the connecting plate and is threadedly connected to an adjustment cap. An adjustment spring is provided between the adjustment cap and the connecting plate.

[0024] The one-way pulley consists of a fixed disc fixedly connected to the rotating tube and a rotating sleeve fitted around the fixed disc. The inner surface of the rotating sleeve has ratchet teeth, and the fixed disc has ratchet pawls. The ratchet pawls and ratchet teeth drive in one direction. A damping belt is fitted around the outside of the rotating sleeve. During pull-out exercises, when the fitness belt is pulled out, the rotating sleeve of the one-way pulley rotates and rubs against the damping belt, generating a damping force. When the fitness belt retracts, the fixed disc of the one-way pulley rotates with the rotating tube, while the rotating sleeve of the one-way pulley remains stationary and does not generate a damping force with the damping belt. Rotating the adjusting cap moves the screw axially, thereby adjusting the clamping force of the damping belt on the one-way pulley, i.e., adjusting the damping force of the damper. Adjustment is convenient.

[0025] In the aforementioned indoor fitness equipment, the damper includes a brake disc fitted and fixed on a rotating tube, a brake bracket fixedly connected to the fixed base, the outer edge of the brake disc being embedded in the brake bracket, brake pads that can move along the axial direction of the brake disc being connected to both sides of the brake disc on the brake bracket, and an adjusting bolt threadedly connected to the brake bracket, the bottom end of the adjusting bolt abutting against one of the brake pads.

[0026] The adjusting bolt can change the clamping force of the brake pads on the brake disc, that is, adjust the damping force of the damper, which is easy to adjust.

[0027] In the aforementioned indoor fitness equipment, there are two main ratchet wheels with opposite transmission directions, and two main pawls that respectively mesh with the two main ratchet wheels.

[0028] The two main ratchet wheels have opposite transmission directions. When the two main pawls mesh with the two main ratchet wheels, the rotating tube will be completely locked to prevent the rotating tube from rotating in one direction and affecting the safety of use.

[0029] In the aforementioned indoor fitness equipment, the two ends of the fixed tube extend into rotating tubes and are connected to brackets. The brackets allow the fixed tube to be securely attached to the ground, wall, bed, or other fixed locations, making the indoor fitness equipment easy to install.

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] A rotatable rotating tube is fitted onto the outside of the fixed tube. A fixed seat is fixed to the fixed tube, and a main ratchet is fixed to the rotating tube. A main pawl that engages with the main ratchet is elastically hinged to the fixed seat. A belt reel is fixed to the rotating tube, and a fitness belt is wound on the belt reel. A coil spring is installed between the fixed tube and the rotating tube. The fixed seat is also equipped with an unlocking mechanism that can disengage the main pawl from the main ratchet and keep it in a disengaged state. A damper that generates damping force when the rotating tube rotates is also installed between the rotating tube and the fixed tube. The damper is equipped with an adjustment mechanism to adjust the damping force, so that this indoor fitness equipment is suitable for both pull-up exercises and pull-up exercises. One fitness equipment can be used for two types of exercises, making it convenient to use. Attached Figure Description

[0032] Figure 1 This is a perspective view of Embodiment 1 of this fitness equipment.

[0033] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0034] Figure 3 This is a perspective view of the unlocking mechanism installed on the fixed base in Embodiment 1 of this fitness equipment.

[0035] Figure 4 This is a perspective view of the unlocking ratchet, drive plate, main pawl, and main ratchet in Embodiment 1 of this fitness device.

[0036] Figure 5 This is a perspective view of the unlocked ratchet and drive plate in Embodiment 1 of this fitness device.

[0037] Figure 6 This is a perspective view of the damper with the cover removed in Embodiment 1 of this fitness equipment.

[0038] Figure 7 This is a perspective view of the unlocking mechanism installed on the fixed base in Embodiment 2 of this fitness equipment.

[0039] Figure 8 This is a perspective view of the unlocking mechanism when the ratchet and drive plate are disassembled in Embodiment 2 of this fitness device.

[0040] Figure 9 This is a perspective view of the unlocking mechanism installed on the fixed base in Embodiment 3 of this fitness equipment.

[0041] Figure 10 This is a perspective view of the unlocking mechanism installed on the fixed base in Embodiment 4 of this fitness equipment.

[0042] Figure 11 This is a perspective view of the damper in Embodiment 5 of this fitness equipment.

[0043] Figure 12 This is a perspective view of embodiment six of this fitness equipment.

[0044] Figure 13 This is a perspective view of embodiment seven of this fitness equipment.

[0045] Figure 14 This is a perspective view of embodiment eight of this fitness equipment.

[0046] In the diagram, 1. Fixed tube; 2. Rotating tube; 3. Fixed seat; 3a. Connecting column; 3b. Support plate; 4. Belt disc; 5. Fitness belt; 6. Guide seat; 7. Coil spring; 8. Main ratchet; 9. Main pawl; 9a. Pawl part; 10. Main spring; 11. Unlocking mechanism; 11a. Unlocking ratchet; 11a1. Drive part; 11a2. Triangular groove; 11b. Spindle; 11c. Unlocking pawl; 11d. Drive plate; 11d1. Limiting protrusion; 11d2. Triangular block; 11e. Pull rope; 11e1. Fixed ring; 11f. Drive pawl ; 11g, return spring; 11h, limiting plate; 11h1, limiting groove; 11j, fixing hook; 11k, limiting component; 11k1, limiting block; 11p, limiting spring; 12, damper; 12a, one-way wheel; 12b, damping belt; 12c, connecting plate; 12d, screw; 12e, adjusting cap; 12f, adjusting spring; 12g, brake disc; 12h, brake bracket; 12j, brake pad; 12k, adjusting bolt; 13, bracket; 13a, mounting plate; 13b, tripod; 13c, straight rod; 13d, fixing sleeve. Detailed Implementation

[0047] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0048] Example 1

[0049] like Figure 1 and Figure 2As shown, an indoor fitness device includes a fixed tube 1 and a rotating tube 2 that is fitted around the outside of the fixed tube 1 and is rotatable. Both ends of the fixed tube 1 extend from the two ends of the rotating tube 2. One end of the fixed tube 1 extends out of the rotating tube 2 and is fixedly attached to a fixed seat 3. Two belt reels 4 are fixed to the rotating tube 2, and a fitness belt 5 is wound around each of the two belt reels 4. Two guide seats 6 are also fixed to the fixed tube 1, each corresponding to one of the belt reels 4. Each guide seat 6 has two guide shafts located below the belt reels 4. The fitness belt 5 passes between the two guide shafts, with one end of the fitness belt 5 fixed to the belt reel 4 and the other end having a hanging ring (not shown in the figure). One guide seat 6 is fixed to the fixed tube 1 by welding or fasteners such as pins. The guide seat 6 is fitted onto the fixed tube 1 and has two connecting ears located on both sides of the fixed tube 1. Pins pass through the two connecting ears and the fixed tube 1. The other guide seat 6 is fixedly connected to the fixed seat 3 by welding or fasteners such as screws. A coil spring 7 is installed between the fixed tube 1 and the rotating tube 2. When the fitness belt 5 is pulled down, the coil spring 7 retracts. To reduce friction and wear between the fixed tube 1 and the rotating tube, a bearing, bushing, or sleeve is installed between the rotating tube 2 and the fixed tube 1. For example, a sleeve is installed at both ends of the rotating tube 2, and the sleeve is fixedly connected to the rotating tube 2 or the fixed tube 1. Alternatively, two sleeves are installed at both ends of the rotating tube 2, where the first sleeve is fixed to the fixed tube 1, and the second sleeve is fitted outside the first sleeve and fixed to the rotating tube 2.

[0050] like Figure 2 , Figure 3 and Figure 4 As shown, a main ratchet 8 is fitted and fixed to one end of the rotating tube 2, and a main pawl 9, which engages with the main ratchet 8, is elastically hinged to the fixed base 3. The fixed base 3 is equipped with an unlocking mechanism 11 that allows the main pawl 9 to disengage from the main ratchet 8 and remain disengaged. A damper 12, which generates damping force when the rotating tube 2 rotates, is also provided between the rotating tube 2 and the fixed tube 1. The damper 12 is equipped with an adjustment mechanism for adjusting the damping force. There are two main ratchet 8s with opposite transmission directions, and two main pawls 9 that engage with the two main ratchet 8s respectively. The main pawl 9 is rod-shaped and located below the main ratchet 8. One end of the main pawl 9 is hinged to the fixed base 3. The unlocking mechanism 11 acts on the other end of the main pawl 9 and drives it to swing downwards. The main pawl 9 has an upward-protruding pawl portion 9a that engages with the main ratchet 8 in the middle. A main spring 10, capable of driving the main pawl 9 to swing upwards, is provided between the main pawl 9 and the fixed base 3. The main spring 10 is a spring plate located below the main pawl 9. One end of the spring plate is fixedly connected to the fixed seat 3, and the other end of the spring abuts against the lower side of the main pawl 9.

[0051] Figure 3 , Figure 4 and Figure 5As shown, the unlocking mechanism 11 includes an unlocking ratchet 11a rotatably connected to the fixed base 3 and located on one side of the main ratchet 8. A spindle 11b is fixed on the fixed base 3, and the unlocking ratchet 11a is fitted onto the spindle 11b. An unlocking pawl 11c that engages with the unlocking ratchet 11a is connected to the fixed base 3. The unlocking pawl 11c is located above the unlocking ratchet 11a and hinged to the fixed base 3. Under the action of gravity, the unlocking pawl 11c engages with the unlocking ratchet 11a. The end face of the unlocking ratchet 11a facing the fixed base 3 has several circumferentially arranged and spaced apart driving parts 11a1. Two adjacent driving parts 11a1 are separated by two ratchet teeth of the unlocking ratchet 11a. The driving parts 11a1 can abut against the main pawl 9 and drive the main pawl 9 to swing downward and disengage from the main ratchet 8. The unlocking mechanism 11 also includes a reciprocating drive plate 11d. One end of the drive plate 11d is rotatably mounted on the spindle 11b, and the other end of the drive plate 11d is connected to a pull rope 11e. A drive pawl 11f, which engages with the unlocking ratchet 11a, is elastically hinged to the middle of the drive plate 11d. The middle of the drive plate 11d has a lug, and the drive pawl 11f is located between the lug and the unlocking ratchet 11a. A spring is provided between the lug and the drive pawl 11f, and a groove is provided on the drive pawl 11f, in which the spring is located. A return spring 11g, which is a torsion spring, is also provided between the drive plate 11d and the fixed base 3. The torsion spring is mounted on the spindle 11b. A connecting post 3a is located on one side of the fixed base 3 near the unlocking ratchet 11a. One end of the torsion spring abuts against the lower side of the drive plate 11d, and the other end of the torsion spring abuts against the lower side of the connecting post 3a. The torsion spring can drive the drive plate 11d to swing upward. A limiting plate 11h is fixed on the fixed base 3. A limiting groove 11h1 is opened on the limiting plate 11h. A limiting protrusion 11d1 is inserted into the limiting groove 11h1 on the drive plate 11d. When the limiting protrusion 11d1 slides from one end of the limiting groove 11h1 to the other end, the unlocking ratchet 11a can rotate by the angle of a ratchet tooth.

[0052] Pulling the pull rope 11e causes the drive plate 11d to swing around the spindle 11b. The drive pawl 11f acts on the unlocking ratchet 11a, driving the unlocking ratchet 11a to rotate by one ratchet tooth angle. The drive part 11a1 abuts against the main pawl 9, causing the main pawl 9 to disengage from the main ratchet 8. Then, the pull rope 11e is released, and under the action of the return spring 11g, the drive plate 11d swings back to reset. Due to the unidirectional transmission action of the unlocking ratchet 11a and the drive pawl 11f, the unlocking ratchet 11a remains stationary, and the drive pawl 11f slides to one ratchet tooth of the unlocking ratchet 11a and engages with the adjacent ratchet tooth. At this time, the drive part 11a1 remains abutting against the main pawl 9, causing the main pawl 9 to disengage from the main ratchet 8, and the fitness belt 5 can be pulled out. Pulling the rope 11e again causes the drive plate 11d to swing around the spindle 11b. The drive pawl 11f acts on the unlocking ratchet 11a, driving it to rotate by one ratchet tooth. The drive unit 11a1 disengages from the main pawl 9. Under the action of the main spring 10, the main pawl 9 re-engages with the main ratchet 8. Then, releasing the rope 11e causes the drive plate 11d to swing back to its original position under the action of the return spring 11g. The unlocking ratchet 11a remains stationary, and the drive pawl 11f slides to one ratchet tooth of the unlocking ratchet 11a, engaging with the next adjacent ratchet tooth. At this point, the main pawl 9 remains engaged with the main ratchet 8, locking the rotating tube 2 and preventing the fitness belt 5 from being pulled. Thus, each pull of the rope 11e causes the unlocking ratchet 11a to rotate by one ratchet tooth, changing the engagement state of the main pawl 9 and the main ratchet 8, making it convenient to use.

[0053] like Figure 6 As shown, the damper 12 includes a one-way wheel 12a fitted and fixed on the rotating tube 2. The one-way wheel 12a includes a fixed disk fixedly connected to the rotating tube 2 and a rotating sleeve fitted on the outside of the fixed disk. The inner side of the rotating sleeve is provided with ratchet teeth, and the fixed disk is provided with ratchet pawls. The ratchet pawls and ratchet teeth are driven in one direction. Cover plates that cover the ratchet teeth and ratchet pawls are fixedly connected to both ends of the fixed disk. A damping belt 12b is wound around the outer periphery of the rotating sleeve of the one-way wheel 12a. A connecting plate 12c is fixedly connected to the fixed seat 3. One end of the damping belt 12b is fixed to the connecting plate 12c. The connecting plate 12c is fixedly connected to the connecting post 3a by bolts. One end of the connecting plate 12c has a connecting sleeve. After the bolt passes through the connecting sleeve, it forms a threaded connection with the connecting post 3a. The other end of the connecting plate 12c is fixedly connected to the damping belt 12b. The adjustment mechanism includes a screw 12d fixedly connected to the other end of the damping band 12b. The screw 12d passes downward through the connecting plate 12c and is threadedly connected to the adjustment cap 12e. An adjustment spring 12f is provided between the adjustment cap 12e and the connecting plate 12c.

[0054] During pull-up exercises, the unlocking mechanism 11 disengages the main pawl 9 from the main ratchet 8 and keeps it disengaged. The damping force of the damper 12 is adjusted to its minimum via the adjustment mechanism. Then, the exercise belt 5 is pulled, causing the belt reel 4 and rotating tube 2 to rotate. The coil spring 7 contracts, generating a restoring force. Once the exercise belt 5 reaches the desired length, the main pawl 9 re-engages with the main ratchet 8, and the rotating tube 2 locks in place, allowing for pull-up exercises. After the pull-up exercise is completed, the unlocking mechanism 11 disengages the main pawl 9 from the main ratchet 8. Under the action of the coil spring 7, the rotating tube 2 rotates in the opposite direction, causing the exercise belt 5 to rewind onto the belt reel 4. During pull-up exercises, the unlocking mechanism 11 disengages the main pawl 9 from the main ratchet 8 and keeps it in the disengaged state. The damping force of the damper 12 is adjusted to suit the pull-up exercise through the adjustment mechanism. Then, the fitness belt 5 is pulled forcefully, causing the belt reel 4 and the rotating tube 2 to rotate. The damper 12 generates damping force, and simultaneously, the coil spring 7 contracts to generate restoring force. The resistance generated by the contraction of the coil spring 7 also provides some resistance for the pull-up exercise. Then, the tension in the fitness belt 5 is maintained and the force is released. Under the action of the restoring force of the coil spring 7, the rotating tube 2 rotates in the opposite direction, and the fitness belt 5 winds back onto the belt reel 4. This process of pulling the fitness belt 5 back and forth is repeated to perform the pull-up exercise. After the pull-up exercise is completed, the fitness belt 5 is completely released. Under the action of the coil spring 7, the rotating tube 2 rotates, causing the fitness belt 5 to wind back onto the belt reel 4. Therefore, this indoor fitness equipment is suitable for both pull-up exercises and pull-up exercises. One piece of equipment can be used for two types of exercise, making it convenient to use.

[0055] Example 2

[0056] like Figure 7 and Figure 8As shown, the number of main pawls 9 and main ratchet 8, the main spring 10, and the unlocking mechanism 11 are slightly different from those in Embodiment 1, but the other structures are the same as in Embodiment 1. One main pawl 9 and one main ratchet 8 are provided. The fixed base 3 has a support plate 3b located below the main pawl 9. The main spring 10 is a compression spring, with both ends abutting against the main pawl 9 and the support plate 3b respectively. The support plate 3b has an abutting portion extending to the spindle 11b. The unlocking mechanism 11 includes an unlocking ratchet 11a rotatably connected to the fixed base 3 and located on one side of the main ratchet 8. The spindle 11b is fixed to the fixed base 3, and the unlocking ratchet 11a is fitted onto the spindle 11b. An unlocking pawl 11c that engages with the unlocking ratchet 11a is connected to the fixed base 3. The unlocking pawl 11c is located above the unlocking ratchet 11a and passes through the fixed base 3 in a vertical direction. The unlocking pawl 11c engages with the unlocking ratchet 11a under the action of gravity. The unlocking ratchet 11a has several circumferentially arranged and spaced-apart drive parts 11a1 on its end face facing the fixed base 3. Two adjacent drive parts 11a1 are separated by two ratchet teeth of the unlocking ratchet 11a. The drive parts 11a1 can abut against the main pawl 9, driving the main pawl 9 to swing downwards and disengage from the main ratchet 8. The unlocking mechanism 11 also includes a reciprocating drive plate 11d. One end of the drive plate 11d is rotatably mounted on the spindle 11b, and the other end of the drive plate 11d is connected to a pull rope 11e. The end face of the unlocking ratchet 11a facing away from the fixed base 3 has several circumferentially arranged triangular grooves 11a2. Each triangular groove 11a2 corresponds to a ratchet tooth of the unlocking ratchet 11a. One end of the drive plate 11d has a triangular block 11d2 that inserts into the triangular groove 11a2. The return spring 11g is a composite spring, which is mounted on the spindle 11b. The main body of the composite spring is a compression spring, and both ends of the composite spring have torsion spring supports. The two ends of the composite spring abut against the ends of the drive plate 11d and the spindle 11b, respectively. The composite spring acts on the drive plate 11d, causing the drive plate 11d to move closer to the unlocking ratchet 11a. The two torsion spring supports of the composite spring abut against the lower side and the abutment part of the drive plate 11d, respectively. After the swing plate swings downward, it can be reset by rotating upward through the composite spring. A rod-shaped limiting member 11k is also threaded onto the support plate 3b. The limiting member 11k can abut against the main pawl 9 to keep the main pawl 9 engaged with the main ratchet 8. The upper end of the limiting member 11k is positioned opposite to the main pawl 9. By rotating the limiting member 11k, the upper end face of the limiting member 11k can abut against the lower side of the main pawl 9.

[0057] Rotate the limiting member 11k to disengage it from the main pawl 9. Then pull the pull rope 11e, causing the drive plate 11d to swing around the spindle 11b. The downward swing angle of the drive plate 11d is limited by the support plate 3b. The triangular block 11d2 acts on the unlocking ratchet 11a, driving the unlocking ratchet 11a to rotate by one ratchet tooth. The drive part 11a1 abuts against the main pawl 9, causing the main pawl 9 to disengage from the main ratchet 8. Then release the pull rope 11e. Under the action of the compound spring, the drive plate 11d swings back to reset. Due to the unidirectional transmission action of the triangular block 11d2 and the triangular groove 11a2, the unlocking ratchet 11a remains stationary. The triangular block 11d2 disengages from one triangular groove 11a2 and then engages with another adjacent triangular groove 11a2. At this time, the drive part 11a1 remains against the main pawl 9, causing the main pawl 9 to disengage from the main ratchet 8. The fitness belt 5 can then be pulled out. Pull the rope 11e again, and the drive plate 11d swings around the spindle 11b. The triangular block 11d2 acts on the unlocking ratchet 11a, driving the unlocking ratchet 11a to rotate by one ratchet angle. The drive part 11a1 disengages from the main pawl 9. Under the action of the main spring 10, the main pawl 9 re-engages with the main ratchet 8. Then, release the rope 11e. Under the action of the compound spring, the drive plate 11d swings back to reset. The unlocking ratchet 11a remains stationary. The triangular block 11d2 disengages from one triangular groove 11a2 and engages with the next adjacent triangular groove 11a2. At this time, rotate the limiting member 11k so that the upper end of the limiting member 11k abuts against the main pawl 9. The main pawl 9 and the main ratchet 8 remain engaged. The rotating tube 2 is locked, and the fitness belt 5 is locked and cannot be pulled.

[0058] Example 3

[0059] like Figure 9As shown, the number of main pawls 9 and main ratchet wheels 8, and the unlocking mechanism 11 differ from those in Embodiment 1, while other structures are the same as in Embodiment 1. One main pawl 9 and one main ratchet wheel 8 are provided. The unlocking mechanism 11 includes a pull rope 11e and a fixing hook 11j. The fixing hook 11j is fixedly connected to the fixing seat 3. The main pawl 9 is rod-shaped and located below the main ratchet wheel 8. One end of the main pawl 9 is hinged to the fixing seat 3, and the other end is fixedly connected to the pull rope 11e. The main pawl 9 has an upwardly protruding pawl portion 9a in the middle that engages with the main ratchet wheel 8. A main spring 10, capable of driving the main pawl 9 to swing upwards, is provided between the main pawl 9 and the fixing seat 3. The pull rope 11e has a fixing ring 11e1 that can hook onto the fixing hook 11j after being pulled downwards. The fixing seat 3 is rotatably connected to a limiting member 11k, which abuts against the main pawl 9 to keep the main pawl 9 engaged with the main ratchet wheel 8. The limiting member 11k is rod-shaped and passes through the support block of the fixed base 3 in the vertical direction. A limiting spring 11p is provided between the limiting member 11k and the support block, with the limiting spring 11p located below the support block. The upper end of the limiting member 11k has an eccentrically positioned limiting block 11k1. When the limiting member 11k rotates, the limiting block 11k1 can disengage from directly below the main pawl 9. After the limiting member 11k rotates in the opposite direction, it can again be positioned directly below the main pawl 9 to swing and limit the main pawl 9. The support block is also provided with two limiting lugs. The limiting block 11k1 is located between the two limiting lugs. The limiting lugs are used to limit the rotation angle of the limiting block 11k1. When the limiting block 11k1 abuts against one of the limiting lugs, the limiting block 11k1 disengages from directly below the main pawl 9. When the limiting block 11k1 abuts against the other limiting lug, the limiting block 11k1 is located directly below the main pawl 9.

[0060] When unlocking, rotating the limiting member 11k causes the limiting block 11k1 to rotate outward, pulling the rope 11e downward. After the main pawl 9 swings downward, the pawl part 9a disengages from the main ratchet 8, releasing the locking state of the rotating tube 2. Then, the fixing ring 11e1 of the rope 11e is hooked onto the fixing hook 11j, keeping the main pawl 9 in the disengaged state, i.e., the rotating tube 2 remains unlocked. At this time, the pull action of the fitness belt 5 can be performed. When it is necessary to re-engage the main pawl 9 with the main ratchet 8, the fixing ring 11e1 of the rope 11e is disengaged from the fixing hook 11j. Under the elastic force of the main spring 10, the main pawl 9 swings upward, and the pawl part 9a moves upward to engage with the ratchet. Then, the limiting member 11k is rotated in the opposite direction, causing the limiting block 11k1 to rotate to a position below the main pawl 9 and abut against the main pawl 9.

[0061] Alternatively, a rod-shaped limiting member 11k may be threaded onto the support block. The limiting member 11k can abut against the main pawl 9 to keep the main pawl 9 engaged with the main ratchet 8. The upper end of the limiting member 11k is positioned opposite to the main pawl 9. When the limiting member 11k is rotated, the upper end face of the limiting member 11k can abut against the lower side face of the main pawl 9.

[0062] Example 4

[0063] like Figure 10 As shown, based on Embodiment 1, the fixed base 3 has a support base, and a rod-shaped limiting member 11k is threadedly connected to the support base. The limiting member 11k is located below the main pawl 9, and can abut against the main pawl 9 to keep the main pawl 9 engaged with the main ratchet 8. This can prevent the rotating tube 2 from rotating when locking is required, improving the safety of use.

[0064] Example 5

[0065] like Figure 11 As shown, the structure of the damper 12 differs from that of Embodiment 1, but other structures are the same as in Embodiment 1. The damper 12 includes a brake disc 12g mounted and fixed on the rotating tube 2. A brake bracket 12h is fixedly connected to the mounting base 3. The outer edge of the brake disc 12g is embedded in the brake bracket 12h. Brake pads 12j, movable along the axial direction of the brake disc 12g, are connected to both sides of the brake bracket 12h. An adjusting bolt 12k is threaded onto the brake bracket 12h, and the bottom end of the adjusting bolt 12k abuts against one of the brake pads 12j. Two guide rods are provided on the brake bracket 12h along the axial direction of the brake disc 12g. The two guide rods pass through the brake pads 12j, allowing the brake pads 12j to slide on the guide rods.

[0066] Example 6

[0067] like Figure 12 As shown, based on Embodiment 1, brackets 13 are fixed to both ends of the fixed pipe 1. The brackets 13 are mounting plates 13a, which connect the fixed pipe 1 to the wall. One mounting plate 13a is fixedly connected to the fixed pipe 1, and an extension rod is provided between the other mounting plate 13a and the fixed pipe 1. One end of the extension rod is inserted into the fixed pipe 1 to form a threaded connection, and the other end of the extension rod is fixedly connected to the mounting plate 13a via a clamp. Alternatively, the brackets can be drill-free mounting feet, meaning that both ends of the fixed pipe 1 are commercially available drill-free anti-slip feet. One anti-slip foot of the fixed pipe 1 is placed against the wall, while the other anti-slip foot has a threaded tube. The anti-slip foot is adjusted against the wall via the threaded tube, and tightening the threaded tube provides a locking mechanism.

[0068] Example 7

[0069] like Figure 13As shown, based on Embodiment 1, brackets 13 are fixed to both ends of the fixing pipe 1. The brackets 13 are square tubes or tripods 13b, which can be used to connect the fixing pipe 1 to the wall. The brackets 13 have adjustment holes for adjusting the installation height.

[0070] Example 8

[0071] like Figure 14 As shown, based on Embodiment 1, brackets 13 are fixed to both ends of the fixing rod. The brackets 13 are straight rods 13c. Fixing sleeves 13d are fixed to both ends of the fixing tube 1. The fixing sleeves 13d are fitted onto the straight rod 13c, and the fixing sleeves 13d and the straight rod 13c are fixed together by pins. The pins are inserted into the fixing sleeves 13d. The straight rod 13c has several pin holes arranged along its length, and a pin can be inserted into any one of these pin holes. The fixing tube 1 can be fixedly connected to the ground or bed frame using the straight rod 13c and the fixing sleeves 13d.

[0072] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An indoor fitness device, comprising a fixed tube (1), characterized in that, It also includes a rotating tube (2) that is fitted on the outside of the fixed tube (1) and can rotate. A fixed seat (3) is fixed on the fixed tube (1). A main ratchet (8) is fixed on the rotating tube (2). A main pawl (9) that meshes with the main ratchet (8) is elastically hinged on the fixed seat (3). A belt disc (4) is fixed on the rotating tube (2). A fitness belt (5) is wound on the belt disc (4). A coil spring (7) is provided between the fixed tube (1) and the rotating tube (2). An unlocking mechanism (11) is provided on the fixed seat (3) that can disengage the main pawl (9) from the main ratchet (8) and keep it in a disengaged state. A damper (12) that can generate damping force when the rotating tube (2) rotates is also provided between the rotating tube (2) and the fixed tube (1). An adjustment mechanism for adjusting the damping force is provided on the damper (12).

2. The indoor fitness equipment according to claim 1, characterized in that, The main pawl (9) is rod-shaped and located on one side of the main ratchet (8). One end of the main pawl (9) is hinged to the fixed seat (3). The unlocking mechanism (11) can act on the other end of the main pawl (9) and drive the main pawl (9) to swing away from the main ratchet (8). The main pawl (9) has a pawl part (9a) in the middle that protrudes toward the main ratchet (8) and engages with the main ratchet (8). A main spring (10) is provided between the main pawl (9) and the fixed seat (3) to drive the main pawl (9) to swing toward the main ratchet (8).

3. The indoor fitness equipment according to claim 2, characterized in that, The main pawl (9) is located below the main ratchet (8). The unlocking mechanism (11) includes a pull rope (11e) and a fixing hook (11j). The pull rope (11e) is fixedly connected to the other end of the main pawl (9), and the fixing hook (11j) is fixedly connected to the fixing seat (3). The pull rope (11e) has a fixing ring (11e1) that can be hooked onto the fixing hook (11j) after being pulled down.

4. The indoor fitness equipment according to claim 2, characterized in that, The unlocking mechanism (11) includes an unlocking ratchet (11a) rotatably connected to a fixed seat (3) and located on one side of the main ratchet (8). An unlocking pawl (11c) that engages with the unlocking ratchet (11a) is connected to the fixed seat (3). The end face of the unlocking ratchet (11a) has several driving parts (11a1) arranged circumferentially and spaced apart. Two adjacent driving parts (11a1) are separated by two ratchet teeth of the unlocking ratchet (11a). The driving parts (11a1) can abut against the main pawl (9) and drive the main pawl (9) to disengage from the main ratchet (8).

5. The indoor fitness equipment according to claim 4, characterized in that, The unlocking mechanism (11) also includes a reciprocating drive plate (11d), a spindle (11b) is fixed on the fixed seat (3), one end of the drive plate (11d) and the unlocking ratchet (11a) are both fitted on the spindle (11b), the other end of the drive plate (11d) is connected to a pull rope (11e), and a return spring (11g) is provided between the drive plate (11d) and the fixed seat (3); the middle part of the drive plate (11d) is elastically hinged with a drive pawl (11f) that engages with the unlocking ratchet (11a), or the end face of the unlocking ratchet (11a) facing the drive plate (11d) is provided with a plurality of circumferentially arranged triangular grooves (11a2), the triangular grooves (11a2) are provided in a one-to-one correspondence with the ratchet teeth of the unlocking ratchet (11a), and the drive plate (11d) has a triangular block (11d2) inserted into the triangular groove (11a2).

6. The indoor fitness equipment according to claim 5, characterized in that, A limiting plate (11h) is fixed on the fixed base (3). A limiting groove (11h1) is opened on the limiting plate (11h). A limiting protrusion (11d1) is inserted into the limiting groove (11h1) on the drive plate (11d). When the limiting protrusion (11d1) slides from one end of the limiting groove (11h1) to the other end, the unlocking ratchet (11a) can rotate by a ratchet angle.

7. The indoor fitness equipment according to any one of claims 1-6, characterized in that, The fixed seat (3) is threaded or rotatably connected to a limiting member (11k), which can abut against the main pawl (9) to keep the main pawl (9) and the main ratchet (8) engaged.

8. The indoor fitness equipment according to any one of claims 1-6, characterized in that, The damper (12) includes a one-way wheel (12a) fitted and fixed on the rotating tube (2). A damping belt (12b) is wrapped around the outer periphery of the one-way wheel (12a). A connecting plate (12c) is fixedly connected to the fixed seat (3). One end of the damping belt (12b) is fixed to the connecting plate (12c). The adjusting mechanism includes a screw (12d) fixedly connected to the other end of the damping belt (12b). The screw (12d) passes through the connecting plate (12c) and is threadedly connected to the adjusting cap (12e). An adjusting spring (12f) is provided between the adjusting cap (12e) and the connecting plate (12c).

9. The indoor fitness equipment according to any one of claims 1-6, characterized in that, The damper (12) includes a brake disc (12g) fitted and fixed on a rotating tube (2). A brake bracket (12h) is fixedly connected to the fixed seat (3). The outer edge of the brake disc (12g) is embedded in the brake bracket (12h). Brake pads (12j) that can move along the axial direction of the brake disc (12g) are respectively connected to both sides of the brake disc (12g) on ​​the brake bracket (12h). An adjusting bolt (12k) is threaded onto the brake bracket (12h). The bottom end of the adjusting bolt (12k) abuts against one of the brake pads (12j).

10. The indoor fitness equipment according to any one of claims 1-6, characterized in that, There are two main ratchet wheels (8) and the two main ratchet wheels (8) drive in opposite directions. There are two main pawls (9) and they mesh with the two main ratchet wheels (8) respectively.

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