Fitness apparatus

Abstract

A fitness apparatus, including a first support assembly, a second support assembly, and a handle assembly. The first support assembly is connected to both the second support assembly and the handle assembly. The second support assembly includes a second protective sleeve. When the fitness apparatus is mounted on the door frame, the first support assembly abuts against the first side of the door frame. The first protective sleeve is located on a first side of the door frame. The second protective sleeve is located on a second side of the door frame, with the first support surface abutting against an upper surface of the door frame; and the first side and the second side are opposite sides of the door frame along a thickness direction of the door frame.

Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This application claims foreign priority of Chinese Patent Application No. 202620107476.3, filed on Jan. 26, 2026 in the China National Intellectual Property Administration, the disclosures of all of which are hereby incorporated by reference.TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of sports equipment, in particular to a fitness apparatus.BACKGROUND

[0003] At present, pull-up fitness apparatuses installed for home use are typically secured to a wall by means of bolts or mounted on a door frame. For the installation method involving bolting to a wall surface, damage is caused to the wall. For the installation method involving mounting on a door frame, the door frame is prone to scratches, deformation under pressure, or indentation marks, all of which adversely affect the indoor environment.SUMMARY

[0004] In view of the above circumstances, it is necessary to provide a fitness apparatus capable of being mounted on a door frame while avoiding damage to the door frame.

[0005] The present disclosure provides a fitness apparatus configured to be mounted on a door frame for use, including a first support assembly, a second support assembly, and a handle assembly, the first support assembly is connected to both the second support assembly and the handle assembly; the second support assembly comprises a connecting assembly and a second protective sleeve, the connecting assembly is configured to connect the second protective sleeve to the first support assembly, and the second protective sleeve comprises a first support surface; when the fitness apparatus is mounted on the door frame, the first support assembly and the handle assembly are located on a first side of the door frame, with the first support assembly abutting against the first side of the door frame; the second protective sleeve is located on a second side of the door frame, with the first support surface abutting against an upper surface of the door frame; and the first side and the second side are opposite sides of the door frame along a thickness direction of the door frame; at least a portion of the second protective sleeve in a region abutting against the door frame is made of an elastic material and is capable of undergoing elastic deformation when pressed against the door frame; the handle assembly is configured to be gripped by a user to perform pull-up exercises.

[0006] In summary, in the fitness apparatus provided by the present disclosure, a first support assembly is located on a first side of the door frame and sleeved against and abutting the first side of the door frame. A connecting assembly of a second support assembly passes through the door frame and is connected, via a second protective sleeve, to an upper edge of a second side of the door frame. Specifically, a first support surface abuts an upper surface of the second side of the door frame, and the first support assembly and the second protective sleeve cooperate with each other to abut the door frame, thereby enabling the fitness apparatus to be stably mounted on the door frame for a user to grip a handle assembly and perform pull-up exercises. Moreover, the fitness apparatus abuts the door frame by means of the second protective sleeve, which is advantageous in reducing the risk of leaving pressure marks on or damaging the door frame.BRIEF DESCRIPTION OF THE DRAWINGS

[0007] FIG. 1 is a schematic structural diagram of a fitness apparatus according to an embodiment of the present disclosure.

[0008] FIG. 2 is another schematic structural diagram of the fitness apparatus according to an embodiment of the present disclosure.

[0009] FIG. 3 is a schematic structural diagram of the fitness apparatus mounted on a door frame according to an embodiment of the present disclosure.

[0010] FIG. 4 is a schematic structural diagram of a second protective sleeve of the fitness apparatus according to an embodiment of the present disclosure.

[0011] FIG. 5 is another schematic structural diagram of the fitness apparatus mounted on the door frame according to an embodiment of the present disclosure.

[0012] FIG. 6 is a schematic structural diagram of a first protective sleeve according to one embodiment of the present disclosure.

[0013] FIG. 7 is an exploded view of a second protective sleeve of the fitness apparatus according to one embodiment of the present disclosure.

[0014] FIG. 8 is an exploded view of a second protective sleeve according to one embodiment of the present disclosure.

[0015] FIG. 9 is an exploded view of a second protective sleeve according to one embodiment of the present disclosure.

[0016] FIG. 10 is a schematic structural diagram of a second protective sleeve connected to a connecting assembly according to one embodiment of the present disclosure, where the second protective sleeve is rotatably connected to the connecting assembly.

[0017] FIG. 11 is a schematic structural diagram of the second protective sleeve connected to the connecting assembly according to one embodiment of the present disclosure, where the second protective sleeve is rotatably connected to the connecting assembly and a limiting pin is engaged with a ratchet wheel.

[0018] FIG. 12 is a schematic structural diagram of the second protective sleeve connected to the connecting assembly according to one embodiment of the present disclosure, where the second protective sleeve is rotatably connected to the connecting assembly and a limiting pin is disengaged from the ratchet wheel.

[0019] FIG. 13 is an orthographic projection view of the fitness apparatus along a width direction of the door frame according to an embodiment of the present disclosure.

[0020] FIG. 14 is an orthographic projection view of a partial structure of the fitness apparatus along the width direction of the door frame according to one embodiment of the present disclosure.

[0021] FIG. 15 is an orthographic projection view of a partial structure of the fitness apparatus along the width direction of the door frame according to one embodiment of the present disclosure.

[0022] FIG. 16 is an orthographic projection view of a partial structure of a fitness apparatus along the width direction of a door frame according to one embodiment of the present disclosure.

[0023] FIG. 17 is an exploded view of the fitness apparatus according to one embodiment of the present disclosure.

[0024] FIG. 18 is another exploded view of the fitness apparatus according to one embodiment of the present disclosure.

[0025] FIG. 19 is a schematic structural diagram of the fitness apparatus according to one embodiment of the present disclosure.

[0026] FIG. 20 is an orthographic projection view of the fitness apparatus shown in FIG. 19 along the width direction of the door frame.

[0027] FIG. 21 is a schematic structural diagram of a fitness apparatus in a storage state according to one embodiment of the present disclosure.

[0028] FIG. 22 is a cross-sectional view of a region where a second support assembly and a first support assembly are connected when the fitness apparatus is in an operating state according to one embodiment of the present disclosure.

[0029] FIG. 23 is a cross-sectional view of a region where the second support assembly and the first support assembly are connected when the fitness apparatus is in a storage state according to one embodiment of the present disclosure.

[0030] FIG. 24 is an exploded view of the fitness apparatus according to an embodiment of the present disclosure.

[0031] FIG. 25 is another exploded view of the fitness apparatus according to an embodiment of the present disclosure.

[0032] FIG. 26 is a cross-sectional view of a fitness apparatus taken along a direction perpendicular to the width direction of the door frame according to an embodiment of the present disclosure.DESCRIPTION OF THE REFERENCE NUMERALreferencereferencedescriptionnumeraldescriptionnumeralfitness apparatus100groove223first support assembly10latching slot224first protective11ratchet wheel23sleevefourth support surface111ratchet teeth231third portion112limiting pin24fourth portion113limiting spring25first threaded groove1131first plug component26rotating component114second plug component27threaded portion1141second fixing component28protruding portion1142handle assembly30nut115horizontal tube31first support tube12base body311second support tube13fifth through hole3111third through hole131seventh through hole3112second support20first notch3113assemblyconnecting assembly21second notch3114first extension211grip component312segmentsecond extension212first handle3121segmentconnecting rod213sixth through hole31211first fixing component214first tooth portion31212first tube215second handle3122first through hole2151through hole31221second tube216second tooth portion31222second through hole2161third plug component32ninth through hole2171fourth plug component33sleeve218fifth plug component34fourth through hole2181first gear341second protective22sixth plug component35sleevefirst portion221second gear351first sub-portion2211handle tube36second sub-portion2212first reinforcing41componenthole2213second reinforcing42componentsecond protrusion2214first screw43second portion222second screw44second support surface2221first nut45second protruding rib22211second nut46first support surface2222door frame200first protruding rib22221first side2001third support surface2223second side2002first protrusion2224first directionXreceiving groove2225

[0033] The following specific embodiments will further illustrate the present disclosure in conjunction with the aforementioned drawings.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The technical solutions in the embodiments of the present disclosure will be described below with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are merely some rather than all of the embodiments of the present disclosure.

[0035] It should be noted that when an element is referred to as being “connected” to another element, it may be directly connected to the other element or intervening elements may be present. When an element is referred to as being “disposed on” another element, it may be directly disposed on the other element or intervening elements may be present. In the present disclosure, unless otherwise expressly specified and limited, the terms “mounted,”“connected,”“coupled,”“fixed,” and the like shall be understood in a broad sense, for example, as fixed connection, detachable connection, or integral connection; may be direct connection or indirect connection through an intermediate medium; and may be internal communication between two elements or interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances. The term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the present disclosure belongs. The terms used in the description of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure.

[0037] In the description of the embodiments of the present disclosure, the technical “first,”“second,” and the like are used merely to distinguish different objects and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present disclosure, “a plurality of” means two or more, unless otherwise expressly and specifically limited.

[0038] In the description of the embodiments of the present disclosure, the term “perpendicular” is used to describe an ideal state between two components. In actual production or use, an approximately perpendicular state may exist between two components. For example, when described in conjunction with numerical values, perpendicular may refer to an included angle between two straight lines in the range of 90°£ 10°, or a dihedral angle between two planes in the range of 90°+10°, or an included angle between a straight line and a plane in the range of 90°+10°. The two components described as “perpendicular” may not be absolutely straight lines or planes, but may be substantially linear or planar; from a macroscopic perspective, as long as the overall extension direction is linear or planar, the component may be regarded as a “straight line” or “plane.”

[0039] The term “parallel” is used to describe an ideal state between two components. In actual production or use, an approximately parallel state may exist between two components. For example, when described in conjunction with numerical values, parallel may refer to an included angle between two straight lines in the range of 180°£ 10°, or a dihedral angle between two planes in the range of 180°+10°, or an included angle between a straight line and a plane in the range of 180°£ 10°. The two components described as “parallel” may not be absolutely straight lines or planes, but may be substantially linear or planar; from a macroscopic perspective, as long as the overall extension direction is linear or planar, the component may be regarded as a “straight line” or “plane.”

[0040] Reference herein to “an embodiment” particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present disclosure. The appearances of this phrase in various places in the specification do not necessarily all refer to the same embodiment, nor are they necessarily mutually exclusive separate or alternative embodiments with other embodiments. The various embodiments of the present disclosure may be combined with one another without conflict.

[0041] The embodiments of the present disclosure will be further described below with reference to the accompanying drawings.

[0042] As shown in FIG. 1 to FIG. 3, an embodiment of the present disclosure provides a fitness apparatus 100 configured to be mounted on a door frame 200 for use. The fitness apparatus 100 includes a first support assembly 10, a second support assembly 20, and a handle assembly 30.

[0043] The first support assembly 10 is connected to both the second support assembly 20 and the handle assembly 30. The first support assembly 10 and the handle assembly 30 are located on a first side 2001 of the door frame 200, while a portion of the second support assembly 20 extends through the door frame 200 and reaches a second side 2002 of the door frame 200, abutting against an upper edge of the door frame 200. In this manner, the fitness apparatus 100 can be stably mounted on the door frame 200. In such configuration, the handle assembly 30 is adapted to be gripped by a user to perform pull-up exercises, thereby satisfying home-based fitness requirements. The first side 2001 and the second side 2002 refer to two opposite sides of the door frame 200 along its thickness direction. For example, the first side 2001 may be one surface of the door frame 200 in the thickness direction, and the second side 2002 may be the other surface of the door frame 200 in the thickness direction.

[0044] In one embodiment, the first support assembly 10 includes a first protective sleeve 11. When the fitness apparatus 100 is mounted on the door frame 200, the first protective sleeve 11 abuts against the first side 2001 of the door frame 200. The first support assembly 10 contacts the door frame 200 via the first protective sleeve 11. The first protective sleeve 11 provides a cushioning function, reducing the risk of the force exerted by the first support assembly 10 damaging or crushing the door frame 200. Furthermore, the first protective sleeve 11 increases the frictional force between the first support assembly 10 and the door frame 200, thereby enhancing the stability of the mounting of the fitness apparatus 100 on the door frame 200 and reducing the risk of detachment.

[0045] In one embodiment, the second support assembly 20 includes a connecting rod 21 and a second protective sleeve 22. The connecting rod 21 connects the second protective sleeve 22 to the first support assembly 10. The connecting rod 21 extends through the door frame 200 to the second side 2002 of the door frame 200. The second protective sleeve 22 is disposed at an end of the connecting rod 21 remote from the first support assembly 10 and abuts against the upper edge of the door frame 200. The second support assembly 20 contacts the upper edge of the door frame 200 via the second protective sleeve 22. The second protective sleeve 22 provides a cushioning function, reducing the risk of the force applied by the second support assembly 20 damaging or crushing the door frame 200. Additionally, the second protective sleeve 22 increases the frictional force between the second support assembly 20 and the door frame 200, thereby improving the mounting stability of the fitness apparatus 100 on the door frame 200 and reducing the risk of falling off.

[0046] In one embodiment, the fitness apparatus 100 may include either one of the first protective sleeve 11 and the second protective sleeve 22, or may include both the first protective sleeve 11 and the second protective sleeve 22 simultaneously. For exemplary purposes, the following description is provided with respect to an implementation in which the fitness apparatus 100 includes both the first protective sleeve 11 and the second protective sleeve 22.

[0047] The first protective sleeve 11 and the second protective sleeve 22 respectively apply forces to the door frame 200 along the thickness direction. In addition, the second protective sleeve 22 engages the upper edge of the door frame 200 and further provides upward supporting force to the fitness apparatus 100 by contacting the upper surface of the door frame 200, thereby facilitating stable mounting of the fitness apparatus 100 on the door frame 200.

[0048] As shown in FIG. 3 and FIG. 4, in one embodiment, the second protective sleeve 22 includes a first support surface 2222. When the fitness apparatus 100 is mounted on the door frame 200, the first support surface 2222 abuts against the upper surface of the door frame 200. The second protective sleeve 22 contacts the upper surface of the door frame 200 via the first support surface 2222. The first support surface 2222 interacts with the upper surface of the door frame 200 and cooperates with the first protective sleeve 11 that abuts against the first side 2001 of the door frame 200, thereby contributing to improved mounting stability of the fitness apparatus 100 on the door frame 200, reduced risk of wobbling or detachment, and enhanced safety during user exercise.

[0049] In one embodiment, the second protective sleeve 22 further includes a second support surface 2221. When the fitness apparatus 100 is mounted on the door frame 200, the second support surface 2221 abuts against the second side 2002 of the door frame 200. The second protective sleeve 22 contacts the second side 2002 and the upper surface of the door frame 200 via the second support surface 2221 and the first support surface 2222, respectively. The second support surface 2221 cooperates with the first protective sleeve 11 to clamp the door frame 200, while the first support surface 2222 interacts with the upper surface of the door frame 200, thereby improving the mounting stability of the fitness apparatus 100 on the door frame 200, reducing the risk of wobbling or falling off, and enhancing exercise safety for the user.

[0050] In one embodiment, when the fitness apparatus 100 is mounted on the door frame 200, a height of the second protective sleeve 22 is greater than a height of the first protective sleeve 11, and the first support surface 2222 is connected to an upper edge of the second support surface 2221.

[0051] In one embodiment, at least a portion of the first protective sleeve 11 in a region that abuts against the door frame 200 is made of an elastic material and is capable of undergoing elastic deformation when pressed against the door frame 200. This configuration provides a cushioning effect, reduces the risk of damaging the door frame 200, and, through elastic deformation, increases the contact area and friction coefficient with the door frame 200, thereby improving the stability and reliability of the mounting of the fitness apparatus 100 on the door frame 200. The first protective sleeve 11 may be entirely formed of an elastic material, or may be composed of different materials in different portions, with only the region contacting the door frame 200 being formed of the elastic material.

[0052] It should be noted that the elastic material described in the present disclosure includes, but is not limited to, flexible materials such as silicone and rubber.

[0053] In one embodiment, at least a portion of the region of the second protective sleeve 22 that abuts against the door frame 200 is made of an elastic material and is capable of elastic deformation when pressed against the door frame 200. This provides cushioning, reduces the risk of damaging the door frame 200, and increases the contact area and friction coefficient with the door frame 200 through elastic deformation, thereby enhancing the stability and reliability of the mounting of the fitness apparatus 100 on the door frame 200. The second protective sleeve 22 may be entirely formed of an elastic material, or may adopt a split design in which only the region contacting the door frame 200 is formed of an elastic material.

[0054] In one embodiment, the second support surface 2221 is provided with a plurality of second protruding ribs 22211, each second protruding rib 22211 is strip-shaped, dot-shaped, wave-shaped, or other structures. Such arrangement increases the surface roughness of the second support surface 2221, thereby increasing the friction coefficient with the door frame 200 and improving the stability and reliability of the mounting of the fitness apparatus 100 on the door frame 200.

[0055] In one embodiment, the first support surface 2222 is provided with a plurality of first protruding ribs 22221, each first protruding rib 22221 is strip-shaped, dot-shaped, wave-shaped, or other structures. Such arrangement increases the surface roughness of the first support surface 2222, thereby increasing the friction coefficient with the door frame 200 and improving the stability and reliability of the mounting of the fitness apparatus 100 on the door frame 200.

[0056] In one embodiment, the shape of the second protruding rib 22211 or the first protruding rib 22221 may alternatively be annular or serpentine, both of which are advantageous in increasing the surface roughness of the contact area with the door frame 200.

[0057] In one embodiment, the second protective sleeve 22 further includes a third support surface 2223, where the third support surface 2223 is connected to an end portion of the first support surface 2222 remote from the second support surface 2221. When the fitness apparatus 100 is mounted on the door frame 200, the third support surface 2223 is located above the first support surface 2222 and faces toward the first side 2001. The third support surface 2223 is capable of being disposed laterally opposite to an object above the door frame 200, such as a wall surface, and is configured to abut against the wall surface under special circumstances so as to reduce damage to the wall surface. For example, when the thickness of the door frame 200 is relatively small, during the process of mounting the fitness apparatus 100 onto the door frame 200, the top portion of the second support assembly 20 may collide with the wall surface above the door frame 200. By providing the third support surface 2223 on the second protective sleeve 22, a buffering and protective function can be achieved, thereby reducing the risk of the second support assembly 20 damaging the wall surface.

[0058] In one embodiment, the first protective sleeve 11 includes a fourth support surface 111 configured to abut against the first side 2001 of the door frame 200. A plurality of third protruding ribs is provided on the fourth support surface 111, and each of the third protruding ribs is strip-shaped or dot-shaped. Such an arrangement is advantageous in increasing the surface roughness of the fourth support surface 111, thereby increasing the friction coefficient between the fourth support surface 111 and the door frame 200, and improving the stability and reliability of the fitness apparatus 100 when mounted on the door frame 200.

[0059] As shown in FIG. 5 and FIG. 6, in one embodiment, the first protective sleeve 11 includes a third portion 112 and a fourth portion 113, wherein the third portion 112 is connected to the main body portion of the first support assembly 10, and the fourth portion 113 is adjustably connected to the third portion 112 along the thickness direction of the door frame 200, and the fourth support surface 111 is disposed on the fourth portion 113. By designing the first protective sleeve 11 as two relatively movable and adjustable portions, the distance between the fourth support surface 111 and the second protective sleeve 22 can be adaptively adjusted according to different thicknesses of the door frame 200, thereby enabling the fitness apparatus 100 to be suitable for door frames 200 of various thicknesses.

[0060] In one embodiment, the fourth portion 113 is provided with a first threaded groove 1131. The first protective sleeve 11 further includes a rotating component 114 rotatably disposed on the third portion 112. The rotating component 114 includes a threaded portion 1141, and the threaded portion 1141 extends out of the third portion 112 toward the second side 2002 and threadedly engages with the first threaded groove 1131. When the rotating component 114 is rotated, the fourth portion 113 can be driven to move relative to the third portion 112 through the cooperation between the threaded portion 1141 and the first threaded groove 1131, thereby adjusting the distance between the fourth support surface 111 and the second protective sleeve 22.

[0061] In one embodiment, the rotating component 114 further includes a protruding portion 1142. The protruding portion 1142 is fixedly connected to the threaded portion 1141 and has at least a portion thereof exposed from the third portion 112. The provision of the protruding portion 1142 on the rotating component 114 facilitates rotation of the rotating component 114 by a user. Further, a plurality of tooth portions is provided on the protruding portion 1142 along the circumferential direction, which is advantageous in increasing the frictional force between the user's fingers and the protruding portion 1142, convenient for operation.

[0062] In one embodiment, a nut 115 is embedded in the fourth portion 113, and the threaded portion 1141 threadedly engages with the nut 115. By providing the nut 115 on the rotating component 114 to cooperate with the threaded portion 1141, the service life of the threaded portion 1141 can be extended, and the connection reliability between the third portion 112 and the fourth portion 113 can be improved. Further, the fourth portion 113 is made of a plastic material and is integrally formed with the nut 115 by injection molding, which not only improves the processing and manufacturing efficiency of the fourth portion 113 and reduces costs, but also enhances the connection stability between the fourth portion 113 and the nut 115.

[0063] As shown in FIG. 1, FIG. 2, FIG. 4, FIG. 7 and FIG. 8, in one embodiment, the second protective sleeve 22 includes a first portion 221 and a second portion 222 that are connected to each other. The first portion 221 is connected to the connecting assembly 21, and a hardness of the first portion 221 is greater than a hardness of the second portion 222. The first portion 221 can serve as the main structural body of the second protective sleeve 22 to ensure structural strength. While the second portion 222 is configured to abut against the door frame 200 and is capable of undergoing elastic deformation when pressed against the door frame 200, thereby providing a buffering effect.

[0064] In one embodiment, the first portion 221 is made of a plastic material, thereby achieving both the advantages of low weight and high strength.

[0065] In one embodiment, the second portion 222 is made of an elastic material, and both the second support surface 2221 and the first support surface 2222 are located on the second portion 222.

[0066] In one embodiment, the first portion 221 and the second portion 222 are detachably connected. By designing the first portion 221 and the second portion 222 to be detachable, when the second portion 222 is damaged, the user can replace only the second portion 222, thereby reducing maintenance costs. In addition, when a size of the second portion 222 is insufficient to meet the requirements of users with larger body sizes, resulting in insufficient mounting stability of the fitness apparatus 100 on the door frame 200, the second portion 222 can also be replaced—for example, replaced with a larger second portion 222 or a second portion 222 having a rougher contact surface—so as to improve the compatibility of the fitness apparatus 100 with different users.

[0067] In one embodiment, the first portion 221 and the second portion 222 may be bonded by adhesive or double-sided tape.

[0068] In one embodiment, the first portion 221 and the second portion 222 may achieve detachable connection through structural engagement. For example, a portion of the structure of the second portion 222 is inserted into the first portion 221. For instance, the first portion 221 is provided with a slide groove having an opening, and the second portion 222 is provided with a protruding structure that mates with the slide groove. The protruding structure is inserted into the slide groove and can slide out of or into the slide groove through the opening thereof. As another example, the first portion 221 includes two assembled structural parts to clamp a portion of the structure of the second portion 222 in the assembled state. And the second portion 222 can be separated from the first portion 221 when the two structural parts of the first portion 221 are released from the assembled state.

[0069] In one embodiment, the first portion 221 and the second portion 222 are integrally formed by injection molding. In one embodiment, the first portion 221 and the second portion 222 are integrally formed by two-shot injection molding. Specifically, the first portion 221 having higher hardness may be molded first, and then the second portion 222 having lower hardness and integrally connected with the first portion 221 may be molded.

[0070] In one embodiment, the first portion 221 is provided with holes 2213. When the second portion 222 is over molded in a secondary molding process, a portion of the structure of the second portion 222 extends into the holes 2213 and forms first protruding portions 2224 that mate with the holes 2213. Such a design is advantageous in increasing the contact area between the first portion 221 and the second portion 222, thereby improving the connection stability and reliability therebetween. Further, in order to further increase the contact area, multiple sets of holes 2213 and first protruding portions 2224 may be provided. Still further, the shape of the holes 2213 may be elongated.

[0071] In one embodiment, the first portion 221 is provided with a second protrusion 2214. When the second portion 222 is over molded or secondarily formed, a part of the second portion 222 encapsulates the second protrusion 2214 and forms a receiving groove 2225 that mates with the second protrusion 2214. Such an arrangement is advantageous in increasing the contact area between the first portion 221 and the second portion 222, thereby enhancing the connection stability and reliability between the two. Further, in order to increase the contact area, multiple sets of second protrusions 2214 and corresponding receiving grooves 2225 may be provided. Further, the second protrusion 2214 may be formed in an elongated strip shape.

[0072] In one embodiment, the first portion 221 and the second portion 222 may be formed as an integral and the first portion 221 is detachably connected to the connecting assembly 21. With such an arrangement, when it is necessary to replace the second portion 222 due to certain reasons, the first portion 221 can be disconnected from the connecting assembly 21, thereby allowing the entire second protective sleeve 22 to be replaced as a whole. This configuration is beneficial in reducing the requirements for the user's manual dexterity. The first portion 221 and the second portion 222 may be connected by adhesive bonding or may be integrally formed by injection molding, which is advantageous in improving the stability and reliability of the interconnection between the two.

[0073] As shown in FIG. 9, in one embodiment, the first portion 221 includes a first sub-portion 2211 and a second sub-portion 2212. The first sub-portion 2211 and the second sub-portion 2212 are detachably connected to each other, and at least one of the first sub-portion 2211 and the second sub-portion 2212 is connected to the second portion 222. When the second protective sleeve 22 and the connecting assembly 21 are in an assembled state, the first sub-portion 2211 and the second sub-portion 2212 are connected to each other and clamp the connecting assembly 21 therebetween. Such an arrangement enables the first portion 221 to be detachably connected to the connecting assembly 21, and achieves the connected state by clamping the connecting assembly 21, which is advantageous in improving the connection stability and reliability between the two.

[0074] In one embodiment, when the first portion 221 clamps the connecting assembly 21, the first sub-portion 2211 and the second sub-portion 2212 are snap-fit connected to each other. This snap-fit connection manner facilitates assembly and disassembly and is beneficial in reducing the requirements for the user's manual dexterity.

[0075] In one embodiment, when the first portion 221 clamps the connecting assembly 21, the first sub-portion 2211 and the second sub-portion 2212 are connected by bolts. This bolted connection manner is advantageous in improving the stability and reliability of the interconnection state between the first sub-portion 2211 and the second sub-portion 2212. The first sub-portion 2211 and the second sub-portion 2212 may be two mutually independent components and may be designed as separate parts, or may be rotatably connected together by a pin shaft.

[0076] As shown in FIG. 10, in one embodiment, the second protective sleeve 22 is rotatably connected to the connecting assembly 21 via the first portion 221, and the rotation axis of the first portion 221 relative to the connecting assembly 21 is parallel to the width direction of the door frame 200. When it is desired to mount the fitness apparatus 100 on the door frame 200, the first portion 221 can be rotated such that the second support surface 2221 and the first support surface 2222 of the second portion 222 can fully contact the first side 2001 and the upper surface of the door frame 200, respectively. When it is desired to mount the fitness apparatus 100 on other objects (such as a pull-up bar or a crossbeam), the first portion 221 can be rotated such that the second portion 222 contacts the other object and maintains the fitness apparatus 100 in a relatively stable state. Such an arrangement is advantageous in improving the compatibility of the fitness apparatus 100 with various usage scenarios.

[0077] As shown in FIGS. 11 and 12, in one embodiment, when the fitness apparatus 100 is mounted on the door frame 200, in order to prevent undesired rotation of the second protective sleeve 22, an additional limiting structure may be provided to restrict rotation of the second protective sleeve 22.

[0078] For example, the second support assembly 20 further includes a ratchet wheel 23 and a limiting pin 24. The ratchet wheel 23 is rotatably disposed on the connecting assembly 21, the first portion 221 is connected to the ratchet wheel 23 and is capable of rotating synchronously with the ratchet wheel 23. One end of the limiting pin 24 is connected to the connecting assembly 21, and the other end elastically abuts against the ratchet teeth 231 of the ratchet wheel 23. When the fitness apparatus 100 is mounted on the door frame 200, the limiting pin 24 serves to restrict rotation of the second protective sleeve 22 in a direction away from the door frame 200. By providing the limiting pin 24 and the ratchet wheel 23, when the limiting pin 24 abuts against the ratchet teeth 231, the ratchet wheel 23 and the second protective sleeve 22 are permitted to rotate only in a first direction X. When the fitness apparatus 100 is mounted on the door frame 200 with the second support surface 2221 abutting against the first side 2001 and the first support surface 2222 abutting against the upper surface of the door frame 200, the first direction X is the direction in which the first support surface 2222 faces toward the upper surface of the door frame 200. Through the limiting abutment of the limiting pin 24, the second protective sleeve 22 is stably pressed against the upper edge of the door frame 200, thereby preventing the second protective sleeve 22 from rotating in a direction opposite to the first direction X.

[0079] When it is desired to mount the fitness apparatus 100 on other objects, the second protective sleeve 22 may continue to be rotated in the first direction X to an angle suitable for the other object. Or, the limiting pin 24 may be pulled up or toggled to disengage it from the ratchet teeth 231, thereby allowing the second protective sleeve 22 to be rotated in a direction opposite to the first direction X to an angle suitable for the other object.

[0080] Further, the second support assembly 20 may further include a limiting spring 25. One end of the limiting spring 25 is connected to the connecting assembly 21, and the other end is connected to the limiting pin 24. The limiting spring 25 applies a force to the limiting pin 24 such that the limiting pin 24 has a tendency to abut against the ratchet teeth 231, thereby improving the stability of its abutment with the ratchet wheel 23. In one embodiment, the limiting spring 25 may be a tension spring or a torsion spring, and a person skilled in the art may make a specific selection according to actual application conditions; the present disclosure is not particularly limited thereto.

[0081] As shown in FIGS. 1 to 3, in one embodiment, the second support assembly 20 includes a plurality of connection assemblies 21 and a plurality of second protective sleeves 22. The plurality of second protective sleeves 22 is arranged along the width direction of the door frame 200. By providing multiple second protective sleeves 22, the number of contact points between the second support assembly 20 and the door frame 200 is increased, thereby improving the stability of the fitness apparatus 100 when mounted on the door frame 200 and reducing the risk of shaking or falling.

[0082] As shown in FIG. 13, in one embodiment, the connecting assembly 21 includes a first extension segment 211 and a second extension segment 212 that are connected to each other. The first extension segment 211 is connected to the first support assembly 10, and the second extension segment 212 is connected to the second protective sleeve 22. When the fitness apparatus 100 is mounted on the door frame 200, the first extension segment 211 extends obliquely upward from the region connected to the first support assembly 10, the second extension segment 212 extends approximately vertically upward from the region connected to the first extension segment 211, and the angle between the first extension segment 211 and the second extension segment 212 is an obtuse angle. In this embodiment, the shape of the connecting assembly 21 conforms to a favorable mechanical model and exhibits good resistance to deformation, which is advantageous in improving the structural strength of the second support assembly 20 and thereby enhancing the reliability of the fitness apparatus 100 when mounted on the door frame 200 for a user to perform pull-up exercises.

[0083] In one embodiment, the connecting assembly 21 includes a connecting rod 213 and a first fixing component 214 that are connected to each other. The first extension segment 211 and the second extension segment 212 are connected to each other to form the connecting rod 213. The first fixing component 214 is disposed at an end of the second extension segment 212 remote from the first extension segment 211. The second protective sleeve 22 is disposed on the first fixing component 214.

[0084] As shown in FIG. 1, FIG. 8 and FIG. 13, in one embodiment, both the connecting rod 213 and the first fixing component 214 are of tubular structure, and an included angle between the second extension segment 212 and the first fixing component 214 is in a range of 60° to 120°. The second protective sleeve 22 includes a groove 223 and a latching slot 224 that are connected with each other. The groove 223 is sleeved over an end portion of the first fixing component 214 along its axial direction, and the latching slot 224 is snap-fitted to a circumferential wall of the second extension segment 212. By virtue of the groove 223 being sleeved over the first fixing component 214, the second protective sleeve 22 is fixedly connected to the first fixing component 214 in the axial direction thereof. Further, by virtue of the latching slot 224 being snap-fitted to the circumferential wall of the second extension segment 212, relative rotation of the second protective sleeve 22 with to fixing respect the first component 214 in the circumferential direction is restricted. Through the cooperation of the groove 223 and the latching slot 224, the second protective sleeve 22 is stably connected to the connecting assembly 21, which is advantageous in reducing the risk of relative rotation or displacement between the two components.

[0085] It should be noted that the tubular structure described in the present disclosure may be either a solid structure or a hollow structure.

[0086] In one embodiment, when the second protective sleeve 22 includes the first portion 221 and the second portion 222 according to any of the preceding embodiments, the groove 223 and the latching slot 224 are preferably provided on the first portion 221 having relatively higher hardness. This arrangement is advantageous in enhancing the stability of the interconnection between the second protective sleeve 22 and the connecting assembly 21, and in reducing the risk of connection failure caused by deformation of the second protective sleeve 22.

[0087] In one embodiment, an inner wall of the latching slot 224 is of arcuate structure. The arcuate structure is adapted to match the circumferential wall of the second extension segment 212. In one embodiment, the latching slot 224 is of semi-circular arc configuration, facilitating snap-fitting engagement with the second extension segment 212.

[0088] As shown in FIG. 14, in one embodiment, the second support assembly 20 further includes a second fixing component 28, and the second fixing component 28 connects the first fixing component 214 to the second protective sleeve 22. Specifically, the second fixing component 28 may be configured as a sheet-like, tubular or strip-like structure, with one end thereof connected to the first fixing component 214 and the other end thereof connected to the second protective sleeve 22, thereby providing a reinforcing function, reducing the risk of separation between the second protective sleeve 22 and the connecting assembly 21, and improving the connection stability and reliability therebetween.

[0089] In one embodiment, the second fixing component 28 is of sheet-like structure and is attached to and connected with the first fixing component 214. A portion of the second protective sleeve 22 is clamped between the second fixing component 28 and the first fixing component 214, or the second fixing component 28 is integrally formed with the second protective sleeve 22, or the second fixing component 28 is inserted into the second protective sleeve 22 along its longitudinal direction.

[0090] In one embodiment, the second fixing component 28 is made of a metallic material, which possesses favorable structural strength and is advantageous in enhancing the reinforcing effect on the second protective sleeve 22.

[0091] In one embodiment, the included angle between the second extension segment 212 and the first fixing component 214 is 90°, the second support surface 2221 is perpendicular to the axial direction of the first fixing component 214, and the first support surface 2222 is parallel to the axial direction of the first fixing component 214. When the fitness apparatus 100 is mounted on the door frame 200, the axial direction of the first fixing component 214 is parallel to the thickness direction of the door frame 200.

[0092] In one embodiment, the first fixing component 214 is fixedly connected to the connecting rod 213.

[0093] In one embodiment, the first fixing component 214 is movably connected to the connecting rod 213, and the first fixing component 214 is configured to be movably connected to the connecting rod 213 along its axial direction. By adjusting the position of the first fixing component 214 relative to the connecting rod 213, the spacing between the second protective sleeve 22 and the first protective sleeve 11 in the thickness direction of the door frame 200 can be adjusted, thereby enabling the fitness apparatus 100 to be compatible with door frames 200 of different thicknesses.

[0094] In one embodiment, the first fixing component 214 and the connecting rod 213 are adjustably connected by means of a latch pin.

[0095] As shown in FIG. 15, in one embodiment, the connecting rod 213 is of tubular structure and the first fixing component 214 is of sheet-like structure. One end of the first fixing component 214 is inserted into the second protective sleeve 22, while the other end is attached to and fixedly connected with the connecting rod 213. The connection between the first fixing component 214 and the connecting rod 213 may be achieved by bolting or welding. Further, in order to enhance the connection stability between the first fixing component 214 and the second protective sleeve 22, the first fixing component 214 and the second protective sleeve 22 may be integrally formed by injection molding. Still further, the first fixing component 214 may be a sheet-like metallic structure. The sheet-like configuration of the first fixing component 214 and its attached connection with the connecting rod 213 impart favorable torsional and bending resistance to the second protective sleeve 22.

[0096] In one embodiment, when the fitness apparatus 100 is mounted on the door frame 200, the portion of the first fixing component 214 that is used for connecting the second protective sleeve 22 appears as an—shape when viewed along a width direction of the door frame 200.

[0097] As shown in FIG. 16, in one embodiment, the first fixing component 214 is fixedly connected to the connecting rod 213, and the first fixing component 214 is further attached to and connected with the second protective sleeve 22. The connection between the first fixing component 214 and the connecting rod 213 may be achieved by bolting or welding.

[0098] Further, in order to enhance the connection stability between the first fixing component 214 and the second protective sleeve 22, the first fixing component 214 and the second protective sleeve 22 may be integrally formed by injection molding. In other embodiments, the first fixing component 214 and the second protective sleeve 22 may alternatively be connected by assembly, for example by bolted connection or by detachable insertion.

[0099] Further, the first fixing component 214 may be a sheet-like metallic structure.

[0100] In one embodiment, when the fitness apparatus 100 is mounted on the door frame 200, the portion of the first fixing component 214 that is used for connecting the second protective sleeve 22 appears as an L-shape when viewed along the width direction of the door frame 200.

[0101] In one embodiment, in order to improve the stability and reliability of the connection of the second protective sleeve 22 to the connecting assembly 21, the second protective sleeve 22 is provided with the latching slot 224 according to any of the preceding embodiments, and the latching slot 224 is snap-fitted to an outer circumferential wall of the connecting rod 213.

[0102] As shown in FIG. 1, FIG. 2 and FIG. 17, in one embodiment, the connecting assembly 21 includes a first tube 215 and a second tube 216 that are connected with each other. An end of the first tube 215 remote from the second tube 216 is connected to the first support assembly 10, and an end of the second tube 216 remote from the first tube 215 is connected to the second protective sleeve 22.

[0103] In one embodiment, one of the first tube 215 and the second tube 216 is inserted into the other. One tube is provided with a plurality of first through holes 2151 and the other tube is provided with a second through hole 2161. The second support assembly 20 further includes a first plug component 26, which is inserted into the aligned first through hole 2151 and second through hole 2161. The axis of the second through hole 2161 is parallel to the axes of the plurality of first through holes 2151, so as to limit relative movement between the first tube 215 and the second tube 216. Such arrangement renders the connecting assembly 21 a detachable split-type structure, which is advantageous in reducing manufacturing costs.

[0104] In one embodiment, the first tube 215 and the second tube 216 are movably inserted and connected with each other. By adjusting the relative position between the first tube 215 and the second tube 216, the length of the connecting assembly 21 can be adjusted. Thereby adjusting the height of the second protective sleeve 22 relative to the first protective sleeve 11 or the horizontal distance therebetween. So that the fitness apparatus 100 can be adapted to different door frames 200 or users of different heights. Preferably, one tube is provided with a plurality of first through holes 2151, and the relative positional relationship between the first tube 215 and the second tube 216 can be adjustably changed by pulling, such that any one first through hole 2151 of the plurality of first through holes 2151 can be aligned with the second through hole 2161. This movable adjustment manner between the first tube 215 and the second tube 216 is simple, efficient, convenient for user operation, and relatively low in cost.

[0105] In one embodiment, the end portion of the first tube 215 facing the second tube 216 is movably inserted into the second tube 216. The plurality of first through holes 2151 is defined in the first tube 215, and the second through hole 2161 is defined in the second tube 216.

[0106] It should be noted that, in one embodiment, the first through hole 2151 may be configured to radially penetrate through two opposite side walls of the first tube 215, and the second through hole 2161 may be configured to radially penetrate through two opposite side walls of the second tube 216. In this arrangement, the first plug component 26 is capable of being inserted completely through both the first tube 215 and the second tube 216 in a penetrating manner.

[0107] Alternatively, the first through hole 2151 may be formed so as to extend through only an upper side wall of the first tube 215, and similarly, the second through hole 2161 may be formed so as to extend through only an upper side wall of the second tube 216. In such a configuration, when the first plug component 26 is inserted into and engages with both the first through hole 2151 and the second through hole 2161, it does not completely penetrate through the entire cross-section of either the first tube 215 or the second tube 216.

[0108] Further, as illustrated in FIG. 18, at least one ninth through holes 2171 may be provided in the second tube 216. The at least one ninth through hole 2171 is configured to be inserted into the second tube 216 through the first plug component 2151. When the first tube 215 and the second tube 216 are rotated relative to each other, the at least one nine through holes 2171 is inserted into the first through hole 2151 through the first plug component 26, to limit positions of the first tube 215 and the second body 216. When a plurality of ninth through holes 2171 are provided, the plurality of ninth through holes 2171 are arranged along a circumferential direction of the second tube 216. This arrangement can be either on the same cross-section or not. For example, the plurality of ninth through holes 2171 are arranged around a circumference direction of the second tube 216, or the plurality of ninth through holes 2171 are arranged in a straight line along the axis direction of the second tube 216, without limitation here. By rotating the second tube 216, the at least one ninth through hole 2171 can be aligned with the first through hole 2151. At this point, the first plug component 26 can be inserted into the aligned first through hole 2151 and ninth through hole 2171, respectively, to secure the first tube 215 and the second tube 216 in place and prevent relative movement between them.

[0109] In the present embodiment, the first tube 215 is provided with a plurality of first through holes 2151, and the second tube 216 is provided with a plurality of ninth through holes 2171. With this arrangement, the relative position between the first tube 215 and the second tube 216 can be adjusted not only along the insertion (axial) direction but also in the circumferential direction. Consequently, the fitness apparatus 100 is capable of assuming various configurations and postures, thereby satisfying different usage requirements and providing enhanced versatility.

[0110] In one specific implementation, the second tube 216 is provided with one second through hole 2161 and one ninth through hole 2171, which are arranged along a circumferential direction of the second tube 216. Central angles formed between a center of the axes of the second through hole 2161 and the ninth through hole 2171 with respect to an axis of the second tube 216 is in the range of 80° to 100°. Accordingly, the second tube 216 can be rotated relative to the first tube 215 within an angular range of 80° to 100°. Preferably, 90°. After reaching a desired angular position where the ninth through hole 2171 is aligned with a corresponding first through hole 2151, the first plug component 26 can be inserted through the aligned pair of through holes, thereby fixedly locking the first tube 215 and the second tube 216 against further relative rotation.

[0111] As shown in FIG. 1, FIG. 19 and FIG. 20, in one embodiment, the connecting assembly 21 includes a first tube 215 and a second tube 216 that are mutually inserted into each other. An end of the first tube 215 remote from the second tube 216 is connected to the first support assembly 10, and an end of the second tube 216 remote from the first tube 215 is connected to the second protective sleeve 22.

[0112] One of the tubular bodies is provided with a plurality of ninth through holes 2171, and the other tube is provided with a plurality of first through holes 2151. By rotating the second tube 216, different ninth through holes 2171 can be aligned with the first through hole 2151. Further, the second support assembly 20 further includes a first plug component 26, and the first plug component 26 is inserted into the aligned first through hole 2151 and ninth through hole 2171.

[0113] In this embodiment, by rotating the second tube 216, the fitness apparatus 100 can assume different configurations. For example, in a first configuration, the plane in which the extending directions of the first tube 215 and the second tube 216 lie is substantially parallel to a vertical plane; in this case, the fitness apparatus 100 can be mounted on a door frame 200 for performing pull-up exercises (as shown in FIG. 1). In a second configuration, the plane in which the extending directions of the first tube 215 and the second tube 216 lie is substantially parallel to a horizontal plane. In this case, the fitness apparatus 100 can be placed on the ground such that the first tube 215 and the second tube 216 abut against the ground surface, thereby enabling the fitness apparatus 100 to be used for performing push-up exercises, it can also achieve a smaller storage area (as shown in FIG. 19 and FIG. 20).

[0114] Specifically, one of the first tube 215 and the second tube 216 is provided with one second through hole 2161 and one ninth through hole 2171. A central angle or a spatial angle formed between the axis of the second through hole 2161 and the axis of the ninth through hole 2171 and the center of a circle of the tube is 80° to 100°. The second tube 216 is rotatable relative to the first tube 215 within an angular range of 80° to 100°. The aligned first through hole 2151 and ninth through holes 2161 are inserted with the first plug component 26, thereby limiting relative rotation between the first tube 215 and the second tube 216.

[0115] In one embodiment, the second through hole 2161 and the ninth through hole are provided in the second tube 216, and the first through hole 2151 is provided in the first tube 215.

[0116] In one embodiment, the first through holes 2151 and the ninth through holes are provided in the first tube 215, and the second through hole 2161 is provided in the second tube 216.

[0117] In this embodiment, the first tube 215 is provided with at least one ninth through hole 2171. The ninth through hole 2171 can be plugged into the second through hole 2161 through the first plug connector 26. When the first tube 215 and the second tube 216 are rotated relative to each other, the at least one nine through holes 2171 is inserted into the first through hole 2151 through the first plug component 26, to limit positions of the first tube 215 and the second body 216. When there is a plurality of ninth through holes 2171, they are arranged along the circumferential direction of the first tube 215, and the arrangement can be on the same cross-section or not. For example, the plurality of ninth through holes 2171 are arranged around a circumference direction of the second tube 216, or the plurality of ninth through holes 2171 are arranged in a straight line along the axis direction of the second tube 216, without limitation here. By rotating the first tube 215, the ninth through hole 2171 can be aligned with the second through hole 2161. At this time, the first plug connector 26 can be plugged into the aligned second through hole 2161 and ninth through hole 2171, plugging and limiting the first tube 215 and the second tube 216 to prevent relative movement between them.

[0118] As shown in FIG. 1 and FIGS. 21 to 23, in one embodiment, the connecting assembly 21 is rotatably connected to the first support assembly 10. By rotating the connecting assembly 21, the fitness apparatus 100 can be switched between an operating state and a storage state. When the fitness apparatus 100 is in the operating state, the connecting assembly 21 is substantially perpendicular to the first support assembly 10, such that the fitness apparatus 100 can be stably mounted on the door frame 200, allowing a user to grip the handle assembly 30 to perform pull-up exercises. When the fitness apparatus 100 is in the storage state, the angle between the connecting assembly 21 and the first support assembly 10 is less than 30°, or the two components are folded together, such that the fitness apparatus 100 assumes a substantially flat configuration, facilitating storage and transportation.

[0119] In one embodiment, the first support assembly 10 further includes a first support tube 12 and a second support tube 13 that are connected to each other. The longitudinal direction of the first support tube 12 is parallel to the width direction of the door frame 200. The first protective sleeve 11 is disposed on the first support tube 12, and the second support tube 13 connects the first support tube 12 to the handle assembly 30. In one embodiment, the first support tube 12 is substantially parallel to the handle assembly 30, and the second support tube 13 is substantially perpendicular to both the first support tube 12 and the handle assembly 30.

[0120] In one embodiment, the second support tube 13 is provided with a third through hole 131. An end of the connecting assembly 21 remote from the second protective sleeve 22 is provided with a sleeve 218. The sleeve 218 is sleeved over the second support tube 13 and is rotatable relative to the second support tube 13. The sleeve 218 is provided with a fourth through hole 2181. When the fitness apparatus 100 is in the operating state, the third through hole 131 is aligned with the fourth through hole 2181.

[0121] The second support assembly 20 further includes a second plug component 27. The second plug component 27 is inserted into the aligned fourth through hole 2181 and third through hole 131. When the second plug component 27 is inserted into the third through hole 131 and the fourth through hole 2181, the fitness apparatus 100 can be stably maintained in the operating state.

[0122] When the second plug component 27 is removed and the connecting assembly 21 is rotated, the second support assembly 20 can be rotated to a position overlapping the first support assembly 10, thereby placing the fitness apparatus 100 in the storage state.

[0123] In one embodiment, the sleeve 218 is provided with two fourth through holes 2181 arranged along the circumferential direction, and the central angle formed between the centers of the two fourth through holes 2181 and the axis of the sleeve 218 is 80° to 100°. When one of the fourth through holes 2181 is aligned with the third through hole 131, the second plug component 27 is inserted into the fourth through hole 2181 and the third through hole 131, thereby stably maintaining the fitness apparatus 100 in the operating state. When the other fourth through hole 2181 is aligned with the third through hole 131, the second plug component 27 is inserted into said fourth through hole 2181 and the third through hole 131, thereby stably maintaining the fitness apparatus 100 in the storage state.

[0124] As shown in FIG. 1 and FIG. 24, in one embodiment, the handle assembly 30 includes a horizontal tube 31. When the fitness apparatus 100 is mounted on the door frame 200, the horizontal tube 31 is configured to be gripped by a user to perform pull-up exercises.

[0125] In one embodiment, the horizontal tube 31 includes a base body 311 and two grip components 312. A longitudinal direction of the base body 311 is parallel to the width direction of the door frame 200. Along the width direction of the door frame 200, the two grip components 312 are respectively located on opposite sides of the base body 311, and the two grip components 312 are configured to be gripped by the user.

[0126] In one embodiment, the two grip components 312 are movably connected to the base body 311. By adjusting the connection position between either one of the two grip components 312 and the base body 311, the distance between the two grip components 312 can be adjusted, thereby providing different grip widths to meet various exercise requirements of users.

[0127] In one embodiment, the two grip components 312 include a first handle 3121 and a second handle 3122. The first handle 3121 is inserted into one end of the base body 311, and the second handle 3122 is inserted into the other end of the base body 311.

[0128] In one embodiment, the base body 311 is provided with a fifth through hole 3111 near the end portion adjacent to the first handle 3121. The first handle 3121 is provided with a plurality of sixth through holes 31211 arranged along its longitudinal direction. By adjusting the insertion depth of the first handle 3121 into the base body 311, different sixth through holes 31211 can be aligned with the fifth through hole 3111. The handle assembly 30 further includes a third plug component 32. The third plug component 32 is inserted into the aligned fifth through hole 3111 and sixth through hole 31211, thereby stably connecting the first handle 3121 to the base body 311.

[0129] A base body 311 is provided with a seventh through hole 3112 at an end portion proximate to the second handle 3122. The second handle 3122 is provided with a plurality of eighth through holes 31221. By adjusting the insertion depth of the second handle 3122 into the base body 311, different eighth through holes 31221 can be aligned with and brought into registration with the seventh through hole 3112.

[0130] The handle assembly 30 further includes a fourth plug component 33. The fourth plug component 33 is inserted through the aligned seventh through hole 3112 and eighth through hole 31221, thereby securely and stably connecting the second handle 3122 to the base body 311.

[0131] As shown in FIG. 25, in one embodiment, the first handle 3121 is provided with a plurality of first tooth portions 31212 arranged along the width direction of the door frame 200. An end portion of the base body 311 proximate to the first handle 3121 is provided with a first notch 3113. The handle assembly 30 further includes a fifth plug component 34, which is provided with a first gear 341. A portion of the fifth plug component 34 is inserted into the first notch 3113, and the first gear 341 is brought into meshing engagement with the plurality of first tooth portions 31212. By rotating the exposed portion of the fifth plug component 34, the first gear 341 drives the plurality of first tooth portions 31212 to move along the width direction of the door frame 200, thereby enabling adjustment of the position of the first handle relative to the base body 311 and consequently adjusting the spacing between the first handle 3121 and the second handle 3122.

[0132] In one embodiment, the second handle 3122 is provided with a plurality of second tooth portions 31222 arranged along the width direction of the door frame 200. An end portion of the base body 311 proximate to the second handle 3122 is provided with a second notch 3114. The handle assembly 30 further includes a sixth plug component 35, which is provided with a second gear 351. A portion of the sixth plug component 35 is inserted into the second notch 3114, and the second gear 351 is brought into meshing engagement with the plurality of second tooth portions 31222. By rotating the exposed portion of the sixth plug component 35, the second gear 351 drives the plurality of second tooth portions 31222 to move along the width direction of the door frame 200, thereby enabling adjustment of the position of the second handle relative to the base body 311 and consequently adjusting the spacing between the first handle 3121 and the second handle 3122.

[0133] In one embodiment, the handle assembly 30 further includes a handle tube 36, which is connected to the base body 311. When the fitness apparatus 100 is mounted on the door frame 200, the handle tube 36 extends in a direction away from the first side 2001 of the door frame.

[0134] In one embodiment, two handle tubes 36 are provided, and the spacing between the two handle tubes 36 is smaller than the spacing between the two grip components 312. The user can grip the two handle tubes 36 to perform pull-up exercises with a narrower grip width, thereby targeting different muscle groups.

[0135] In one embodiment, when the fitness apparatus 100 is mounted on the door frame 200, the two handle tubes 36 are perpendicular to the width direction of the door frame 200, that is, the extending directions of the two handle tubes 36 are parallel to the vertical plane.

[0136] In one embodiment, the handle tubes 36 are connected to the second support tube 13. The fitness apparatus 100 further includes a first reinforcing component 41. The first reinforcing component 41 is attached to and covers a portion of the second support tube 13, and the handle tubes 36 are fixed to the first reinforcing component 41. When the fitness apparatus 100 is mounted on the door frame 200, the longitudinal directions of the second support tube 13 and the first reinforcing component 41 are parallel to each other and both perpendicular to the width direction of the door frame 200. The provision of the first reinforcing component 41 increases the force-bearing area between the handle tubes 36 and the second support tube 13, reduces stress concentration, mitigates the risk of rotation or fracture of the handle tubes 36 relative to the second support tube 13, and improves the safety of the fitness apparatus 100 during use.

[0137] In one embodiment, the first reinforcing component 41 is configured as a plate-like structure, which facilitates an increase in the contact area with the second support tube 13 and thereby enhances the anti-torsion performance.

[0138] In one embodiment, the first reinforcing component 41 and the two handle tubes 36 are integrally formed, and the first reinforcing component 41 is detachably fixed to the second support tube 13 by screws.

[0139] As shown in FIG. 1 and FIG. 26, in one embodiment, the fitness apparatus 100 further includes a second reinforcing component 42. The second reinforcing component 42 and the first reinforcing component 41 are respectively located on opposite sides of the second support tube 13 and both are attached to and cover portions of the second support tube 13. An end portion of the connecting assembly 21 remote from the second protective sleeve 22 is fixed to the second reinforcing component 42. By connecting the connecting assembly 21 to the second support tube 13 via the second reinforcing component 42, the force-bearing area between the connecting assembly 21 and the second support tube 13 is increased, stress concentration is reduced, the risk of rotation or fracture of the connecting assembly 21 relative to the second support tube 13 is mitigated, and the safety of the fitness apparatus 100 during use is improved.

[0140] In one embodiment, the second reinforcing component 42 is configured as a plate-like structure, which facilitates an increase in the contact area with the second support tube 13 and thereby enhances the anti-torsion performance.

[0141] In one embodiment, the second reinforcing component 42 and the connecting assembly 21 are integrally formed, and the second reinforcing component 42 is detachably fixed to the second support tube 13 by screws.

[0142] In one embodiment, a shank portion of a first screw 43 passes through the first reinforcing component 41 and the second support tube 13 and is then locked with the second reinforcing component 42. A shank portion of a second screw 44 passes through the second reinforcing component 42 and the second support tube 13 and is then locked with the first reinforcing component 41. Further, the fitness apparatus 100 includes a first nut 45 and a second nut 46. The first nut 45 is concealed in the connection region between the connecting assembly 21 and the second reinforcing component 42 and is used for threaded engagement with the first screw 43. The second nut 46 is concealed in the connection region between the two handle tubes 36 and the first reinforcing component 41 and is used for threaded engagement with the second screw 44. Such an arrangement not only enhances the reinforcing effect of the first reinforcing component 41 and the second reinforcing component 42 on various structures of the fitness apparatus 100, but also prevents exposure of the nuts, thereby improving the aesthetic appearance of the fitness apparatus 100 and avoiding damage to the nuts due to exposure.

[0143] In summary, the fitness apparatus 100 provided by the present disclosure, the first support assembly 10 is located on and abuts against the first side 2001 of the door frame 200. The connecting assembly 21 of the second support assembly 20 passes through the door frame 200 and is connected, via the second protective sleeve 22, to the upper edge of the second side 2002 of the door frame 200. Specifically, the first support surface 2222 abuts against the upper surface of the second side 2002 of the door frame 200. The first support assembly 10 and the second protective sleeve 22 cooperate with each other to abut against the door frame 200, thereby enabling stable mounting of the fitness apparatus 100 on the door frame 200 for a user to grip the handle assembly 30 and perform pull-up exercises. Moreover, the use of the second protective sleeve 22 for contacting the door frame 200 helps to avoid the risk of indentations or damage to the door frame 200.

[0144] The above description merely sets forth specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions made within the technical scope disclosed in the present disclosure shall fall within the scope of protection of the present disclosure.

Claims

1. A fitness apparatus configured to be mounted on a door frame for use, comprising a first support assembly, a second support assembly, and a handle assembly, wherein the first support assembly is connected to both the second support assembly and the handle assembly;wherein the second support assembly comprises a connecting assembly and a second protective sleeve, the connecting assembly is configured to connect the second protective sleeve to the first support assembly, and the second protective sleeve comprises a first support surface;wherein, when the fitness apparatus is mounted on the door frame, the first support assembly and the handle assembly are located on a first side of the door frame, with the first support assembly abutting against the first side of the door frame; the second protective sleeve is located on a second side of the door frame, with the first support surface abutting against an upper surface of the door frame; and the first side and the second side are opposite sides of the door frame along a thickness direction of the door frame;wherein at least a portion of the second protective sleeve in a region abutting against the door frame is made of an elastic material and is capable of undergoing elastic deformation when pressed against the door frame;wherein the handle assembly is configured to be gripped by a user to perform pull-up exercises.

2. The fitness apparatus according to claim 1, wherein the second protective sleeve further comprises a second support surface connected to the first support surface, the second support surface and the first support surface are arranged in an L shape;wherein, when the fitness apparatus is mounted on the door frame, the second support surface abuts against the second side of the door frame.

3. The fitness apparatus according to claim 2, whereinthe first support surface is provided with a plurality of first protruding ribs; and / orthe second support surface is provided with a plurality of second protruding ribs.

4. The fitness apparatus according to claim 1, wherein the second protective sleeve further comprises a third support surface connected to the first support surface;when the fitness apparatus is mounted on the door frame, the third support surface is located above the first support surface and is directed toward the first side.

5. The fitness apparatus according to claim 1, wherein the first support assembly comprises a first protective sleeve;when the fitness apparatus is mounted on the door frame, the first protective sleeve abuts against the first side of the door frame;at least a portion of the first protective sleeve in a region that abuts against the door frame is made of an elastic material and is capable of undergoing elastic deformation when pressed against the door frame.

6. The fitness apparatus according to claim 1, wherein the connecting assembly comprises a first tube and a second tube connected to each other;wherein an end of the first tube remote from the second tube is connected to the first support assembly, and an end of the second tube remote from the first tube is connected to the second protective sleeve;one of the first tube and the second tube is inserted into the other tube; one of the first tube and the second tube is provided with a plurality of first through holes, and the other tube is provided with at least one second through hole, such that one first through hole of the plurality of first through holes is configured to align with one second through hole of the at least one second through hole;the second support assembly further comprises a first plug component, and the first plug component is inserted into the aligned first through hole and second through hole.

7. The fitness apparatus according to claim 6, wherein the first tube or the second tube is provided with at least one ninth through hole;when the first tube and the second tube are rotated relative to each other, the at least one ninth through hole is configured to be inserted into the first tube or the second tube through the first plug component, to limit positions of the first tube and the second tube.

8. The fitness apparatus according to claim 1, wherein the connecting assembly comprises a connecting rod and a first fixing component connected to each other, wherein an end of the connecting rod remote from the first fixing component is connected to the first support assembly, and the second protective sleeve is provided on the first fixing component.

9. The fitness apparatus according to claim 8, wherein both the connecting rod and the first fixing component are of tubular structure, and an included angle between the connecting rod and the first fixing component is 60° to 120°;the second protective sleeve comprises a groove and a latching slot connected to each other, wherein the groove is sleeved over an axial end portion of the first fixing component, and the latching slot is latched onto a peripheral wall of the connecting rod.

10. The fitness apparatus according to claim 8, wherein the first fixing component is of a sheet-like structure, the first fixing component is connected to the second protective sleeve, and at least a portion of the first fixing component is attached and connected to the connecting rod.

11. The fitness apparatus according to claim 10, wherein when the fitness apparatus is mounted on the door frame, as viewed along a width direction of the door frame, a portion of the first fixing component used for connecting the second protective sleeve is of a—shape or an L-shape.

12. The fitness apparatus according to claim 1, wherein the second protective sleeve comprises a first portion and a second portion connected to each other, the first portion is connected to the connecting assembly, and a hardness of the first portion is greater than a hardness of the second portion;the second portion is made of an elastic material and is capable of undergoing elastic deformation when pressed against the door frame;the first support surface is located on the second portion.

13. The fitness apparatus according to claim 12, wherein the first portion and the second portion are detachably connected to each other.

14. The fitness apparatus according to claim 12, wherein the first portion and the connecting assembly are detachably connected; andthe first portion and the second portion are connected to each other by adhesive bonding or are integrally formed by injection molding.

15. The fitness apparatus according to claim 1, wherein the handle assembly comprises a horizontal tube configured to be gripped by a user to perform the pull-up exercises when the fitness apparatus is mounted on the door frame;the horizontal tube comprises a base body and two grip components, a longitudinal direction of the base body is parallel to a width direction of the door frame; wherein along the width direction of the door frame, the two grip components are respectively located at opposite sides of the base body and are each movably connected to the base body; andby adjusting a connection position between any one of the two grip components and the base body, a distance between the two grip components is adjustable so as to provide different grip widths for the user.

16. The fitness apparatus according to claim 15, wherein each of the two grip components comprises a first handle, the first handle is inserted into one end of the base body;the base body is provided, near an end portion close to the first handle, with a fifth through hole;the first handle is provided, along its longitudinal direction, with a plurality of sixth through holes, and any one sixth through hole of the plurality of sixth through holes is configured to align with the fifth through hole; andthe base body further comprises a third plug component, the third plug component is inserted through the fifth through hole and the sixth through hole that are aligned with each other.

17. The fitness apparatus according to claim 1, wherein the first support assembly comprises a first support tube and a second support tube connected to each other, the second support tube is configured to connect the first support tube to the handle assembly; and a longitudinal direction of the first support tube is parallel to the width direction of the door frame when the fitness apparatus is mounted on the door frame;the handle assembly comprises a handle tube, the handle tube is connected to the second support tube; and the handle tube extending in a direction away from the first side when the fitness apparatus is mounted on the door frame; andthe fitness apparatus further comprises a first reinforcing component, the first reinforcing component is attached to and covering the second support tube, and the handle tube is fixed to the first reinforcing component.

18. The fitness apparatus according to claim 17, wherein the fitness apparatus further comprises a second reinforcing component, the second reinforcing component and the first reinforcing component being located on opposite sides of the second support tube respectively and both being attached to and covering the second support tube; andan end of the connecting assembly remote from the second protective sleeve is fixed to the second reinforcing component.

19. The fitness apparatus according to claim 1, wherein the connecting assembly is rotatably connected to the first support assembly; andby rotating the connecting assembly, the fitness apparatus is switchable between an operative state and a storage state.

20. The fitness apparatus according to claim 5, wherein the first protective sleeve comprises a third portion and a fourth portion, the third portion is connected to a main body portion of the first support assembly; andthe fourth portion and the third portion are connected to each other in an adjustable manner along a thickness direction of the door frame.

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