Fitness stool

Abstract

The utility model relates to a fitness stool which comprises a bottom housing, a bracket assembly and a stool surface assembly, the bottom housing comprises a bottom plate and two side walls extending from the two ends of the bottom plate to the same side of the bottom plate. The support assembly comprises a first support and a second support, the first support is installed on a bottom plate of the bottom cover shell, and the second support is installed on the top of the first support and connected with the two side walls of the bottom cover shell. The stool surface assembly comprises a seat cushion and a backrest, one end of the seat cushion is installed on one side wall of the bottom cover shell, the other end of the seat cushion is supported by the second support, the end, adjacent to the seat cushion, of the backrest is a first end, the other end, away from the seat cushion, of the backrest is a second end, the first end of the backrest is rotationally arranged relative to the seat cushion, and the backrest has a tiled state and an overturning state. According to the fitness stool, the base structure is simplified, the production and assembly period is shortened, the production cost is reduced, and the space utilization rate is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fitness equipment, in particular to a fitness bench. Background Art

[0002] In the current fitness equipment market, fitness benches are a new type of fitness equipment that can be widely used in homes and gyms. With the help of fitness benches, users can perform various strength training exercises and help them exercise different muscle groups. In addition, when strength training is not required, fitness benches can also be used as a stool body, making fitness benches suitable for multiple application scenarios and improving their utilization rate.

[0003] Fitness benches typically consist of multiple components, with the base structure being a key element. Existing fitness bench bases typically utilize a combination of bentwood and an inner liner. The bentwood typically provides primary support and stability, while the inner liner enhances the base's strength and comfort. The bentwood is typically precision-machined to ensure strength and stability, while the inner liner's design must closely align with the bentwood to ensure overall structural stability and durability.

[0004] While existing bentwood and liner structures can provide the required support and stability to a certain extent, they are complex, requiring high precision and time-consuming manufacturing and assembly, increasing production costs and difficulty. Furthermore, this base structure compromises space utilization, resulting in wasted storage space. Utility Model Content

[0005] In view of at least one shortcoming existing in the related art, the present invention provides a fitness bench which simplifies the base structure, shortens the production and assembly cycle, reduces production costs, and improves space utilization.

[0006] The present application provides a fitness stool, comprising a bottom cover, a bracket assembly, and a stool seat assembly;

[0007] The bottom cover includes a bottom plate and two side walls extending from both ends of the bottom plate in a longitudinal direction to the same side of the bottom plate; the bracket assembly includes a first bracket and a second bracket, the first bracket being mounted on the bottom plate of the bottom cover and located on the same side as the two side walls, and the second bracket being mounted on top of the first bracket and connecting the two side walls of the bottom cover;

[0008] The stool surface assembly is supported by the bottom cover and the bracket assembly, and the stool surface assembly includes: a seat cushion and a backrest, one end of the seat cushion is installed on a side wall of the bottom cover, and the other end of the seat cushion is supported by the second bracket, the end of the backrest adjacent to the seat cushion is the first end, and the other end of the backrest away from the seat cushion is the second end. The first end of the backrest is rotatably arranged relative to the seat cushion, and the backrest includes a flat state and a flipped state. In the flat state, the backrest and the seat cushion are located on the same plane and the second end of the backrest is supported by the other side wall of the bottom cover. In the flipped state, the backrest flips from the second end away from the bottom cover to the desired angle.

[0009] In the above solution, the base structure of the fitness bench is simplified, the production and assembly cycle is shortened, and the production cost is reduced; in addition, without reducing the overall strength, more storage space is provided for the fitness bench, thereby improving space utilization.

[0010] In some embodiments, the bottom cover is an integrally formed structure, and the connection position between the bottom plate and the two side walls forms an arc-shaped transition fillet. This solution can further simplify the structure and improve the aesthetics of the fitness bench.

[0011] In some embodiments, the two ends of the second bracket are respectively mounted on the two side walls via mounting brackets. The opposing surfaces of the two side walls of the bottom cover are inner surfaces. The inner surfaces of the two side walls are recessed inward near the top to form stepped surfaces. The mounting bracket includes a bracket body and a bent portion located at the top of the bracket body. The bent portion is bent relative to the bracket body and overlaps the stepped surface. The bracket body is provided with mounting holes. The two ends of the second bracket are respectively sleeved into the mounting holes of the two mounting brackets. The bracket body is fixedly connected to the inner surfaces of the side walls of the bottom cover to fix the two ends of the second bracket to the two side walls of the bottom cover. In this solution, the second bracket is mounted and assembled on the side walls of the bottom cover via the mounting brackets. The design of the stepped surface on the side walls provides reliable support, allowing the second bracket to be firmly mounted on the bottom cover, thereby improving the strength and stability of the overall structure.

[0012] In some embodiments, a support rod is provided on the back of the backrest, the first end of the support rod is hinged to the back of the backrest, the second end of the support rod is provided with a sliding block, the sliding block is hollow and sleeved on the second bracket to drive the second end of the support rod to slide along the second bracket, the second bracket is provided with two or more adjustment holes, and a limiter is provided on the side of the sliding block corresponding to the adjustment hole. The limiter can limit the sliding block to the adjustment hole, so that the backrest is supported at a corresponding angle by the support rod. In this solution, the limiting method of the support rod is adjusted to adapt to the improvement of the base assembly, cleverly using the second bracket to achieve the sliding and limiting of the support rod, without adding other components to cooperate with the support rod, simplifying the structure and reducing costs.

[0013] In some embodiments, the sliding block is provided with a roller, the rolling surface of the roller being in contact with the surface of the second bracket, so that the roller and the second bracket can roll together. The roller can provide good guidance for the sliding of the sliding block relative to the second bracket, reducing friction during the sliding process and making the backrest position adjustment smoother.

[0014] In some embodiments, the fitness bench further includes a tension arm, one end of which is rotatably connected to the back of the backrest so that the tension arm can be stored within the range of the back of the backrest or rotated outward relative to the backrest to a desired angle. The bottom cover is open in the width direction of the fitness bench so as not to hinder the rotation of the tension arm within its rotation range, so that the tension arm can rotate and open to a desired angle relative to the backrest when the backrest is in a flat state or in a flipped state. This solution can be achieved simultaneously by simplifying the structure of the base assembly, further broadening the use scenarios of the fitness bench, improving the flexibility of the fitness bench application, providing users with a wider experience, and meeting the needs of different posture training.

[0015] In some embodiments, the fitness bench further includes a force transmission system and a resistance system. The force transmission system includes a force transmission seat that slides with the back of the backrest, four fixed pulleys located on the back of the backrest, and three movable pulleys mounted on the force transmission seat. The four fixed pulleys are near the second end of the backrest, and the force transmission seat is located on the side of the fixed pulleys away from the second end of the backrest. A pull rope alternately passes between the circumferences of the four fixed pulleys and the circumferences of the three movable pulleys. The ends of the pull rope extend through tension arms to form force-applying ends for the user to apply force. The resistance system is connected to the force transmission seat and provides resistance to the force transmission seat opposite to the force applied by the pull rope. In this solution, the force transmission system including four fixed pulleys and three movable pulleys can transmit greater resistance to the user, thereby increasing the intensity of resistance training.

[0016] In some embodiments, the resistance system includes a resistance rope, wherein the force transmission base is provided with six first connection ends, the second bracket is provided with a connection frame, and the connection frame is provided with six second connection ends. Resistance ropes are connected between the first connection ends and the second connection ends in a one-to-one correspondence. The six resistance ropes provide training resistance, thereby enhancing the user's training experience.

[0017] In some embodiments, the resistance system includes a motor, the output end of which is connected to a force transfer base to provide a force to the force transfer base away from the fixed pulley. This motor output provides greater flexibility, allowing users to select the appropriate resistance level and output mode based on their individual workout needs or stage, enhancing the personalization and flexibility of the fitness bench.

[0018] In some embodiments, a first bracket is positioned below one end of the seat cushion near the backrest to form a unified storage space below the backrest. A storage rack is provided in the storage space below the backrest and is mounted on the bottom cover. The storage space below the backrest can improve space utilization, and the storage rack can be used to store various fitness accessories for easy access. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1a A three-dimensional diagram of the fitness bench provided by an embodiment of the present utility model in a flat-laying state;

[0021] Figure 1b A top view of the fitness bench provided by an embodiment of the present invention in a flat-lay state;

[0022] Figure 1c This is a front view of the fitness bench provided by an embodiment of the present utility model in a flat state;

[0023] Figure 2a A three-dimensional diagram of the fitness bench provided by an embodiment of the present invention in a flat position with its tension arms opened;

[0024] Figure 2b A top view of the fitness bench provided by an embodiment of the present invention in a flat position with the tension arms opened;

[0025] Figure 3a A three-dimensional diagram of a base assembly of a fitness bench provided in an embodiment of the present utility model;

[0026] Figure 3b A front view of a base assembly of a fitness bench provided by an embodiment of the present invention;

[0027] Figure 4 An exploded view of the assembly position of the second bracket and the bottom cover of the base assembly of the fitness bench provided by an embodiment of the present utility model;

[0028] Figure 5a A three-dimensional diagram of the backrest of the fitness bench provided by an embodiment of the utility model in a flipped state;

[0029] Figure 5b A front view of the backrest of the fitness bench provided by an embodiment of the utility model in a flipped state;

[0030] Figure 6 for Figure 5a A partial enlarged view of the middle part A;

[0031] Figure 7 A schematic diagram of various adjustment positions of the backrest of a fitness bench provided in an embodiment of the present utility model;

[0032] Figure 8 A partial enlarged view of the arm adjustment seat of the fitness bench provided in an embodiment of the present utility model;

[0033] Figure 9 A schematic diagram of the assembly of the tension arm and the arm adjustment seat of the fitness bench provided by an embodiment of the present utility model;

[0034] Figure 10 A schematic diagram of the back of a fitness bench provided by an embodiment of the present invention;

[0035] Figure 11 A schematic diagram of the back of the fitness bench provided by an embodiment of the present invention after removing the arm adjustment seat and part of the force transmission seat to illustrate the force transmission system;

[0036] Figure 12a Figure 1 is a perspective view of the fitness bench provided by an embodiment of the present invention in a flipped state with the tension arms opened;

[0037] Figure 12b Figure 2 is a perspective view of the fitness bench provided by an embodiment of the present invention in a flipped state with the tension arms opened;

[0038] Figure 12c A front view of the fitness bench provided by an embodiment of the present invention in a flipped state with the tension arms opened;

[0039] Figure 12d A top view of the fitness bench provided by an embodiment of the present invention in a flipped state with the tension arms opened;

[0040] Figure 13 Schematic diagram of the pull arm of the fitness bench provided by the embodiment of the present utility model rotating to various gears.

[0041] In the picture:

[0042] 100, base assembly; 110, bottom cover; 111, bottom plate; 112, side wall; 113, transition fillet; 114, step surface; 120, bracket assembly; 121, first bracket; 122, second bracket; 123, adjustment hole; 130, mounting bracket; 131, bracket body; 132, bending portion; 133, mounting hole; 140, storage rack; 150, connecting rack; 151, second connecting end; 200, stool surface assembly; 210, seat cushion; 220, backrest; 221, first end of backrest; 222, second end of backrest; 310, support rod; 311, support The first end of the support rod; 312, the second end of the support rod; 320, the sliding block; 330, the limit member; 340, the roller; 410, the tension arm; 420, the mounting member; 421, the mating surface; 422, the mounting plate; 430, the friction pad; 440, the positioning member; 500, the arm adjustment seat; 510, the assembly surface; 511, the positioning hole; 520, the fixed plate surface; 600, the force transmission system; 610, the force transmission seat; 611, the first connecting end; 620, the fixed pulley; 630, the movable pulley; 640, the pull rope; 641, the force-applying end of the pull rope; 700, the resistance system; 710, the resistance rope. DETAILED DESCRIPTION

[0043] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0044] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments unless there is a conflict.

[0045] In the description of this utility model, it should be understood that the terms "center," "transverse," "longitudinal," "upper," "lower," "top," "bottom," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of this utility model. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features referred to.

[0046] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0047] The embodiment of the present application provides a fitness bench, such as Figure 1a-Figure 1c As shown, the fitness bench includes a base assembly 100 and a bench seat assembly 200 supported on the base assembly 100 .

[0048] like Figure 3a and Figure 3b As shown, the base assembly 100 includes a bottom cover 110 and a bracket assembly 120. The bottom cover 110 includes a bottom plate 111 and two side walls 112 extending from both ends in the length direction of the bottom plate 111 to the same side of the bottom plate 111; the bracket assembly 120 includes a first bracket 121 and a second bracket 122. The first bracket 121 is installed on the bottom plate 111 of the bottom cover 110 and is located on the same side as the two side walls 112. The second bracket 122 is installed on the top of the first bracket 121 and connects the two side walls 112 of the bottom cover 110.

[0049] In the above embodiment, the base structure of the fitness bench is improved, replacing the original bent wood plus inner liner structure, simplifying the base structure of the fitness bench. Without reducing the overall strength, the base assembly 100 in this application provides more storage space for the fitness bench, thereby improving space utilization. At the same time, due to the simplification of the structure, the production and assembly cycle is shortened, the production cost is reduced, and the production and assembly efficiency is improved.

[0050] In some embodiments, the bottom cover 110 is an integrally formed structure, with curved transition fillets 113 formed at the junction of the bottom plate 111 and the two side walls 112. This solution can further simplify the structure and enhance the aesthetics of the fitness stool. Optionally, the bottom cover 110 can be made of a wood-like material, specifically bentwood. To reduce costs, it can also be made of imitation wood materials. To ensure the support of the fitness stool, the first bracket 121 and the second bracket 122 are made of steel.

[0051] In some embodiments, see further Figure 3a-Figure 4 The two ends of the second bracket 122 are respectively installed on the two side walls 112 through the mounting bracket 130. The opposite surfaces of the two side walls 112 of the bottom cover 110 are inner surfaces. The inner surfaces of the two side walls 112 are respectively recessed inward near the top to form step surfaces 114. The mounting bracket 130 includes a bracket body 131 and a bent portion 132 located at the top of the bracket body 131. The bent portion 132 is bent relative to the bracket body 131. The bent portion 132 overlaps the step surface 114. The bracket body 131 is provided with a mounting hole 133. The two ends of the second bracket 122 are respectively sleeved in the mounting holes 133 of the two mounting brackets 130. The bracket body 131 is fixedly connected to the inner surface of the side wall 112 of the bottom cover 110, thereby fixing the two ends of the second bracket 122 to the two side walls 112 of the bottom cover 110.

[0052] The above embodiment provides an implementation for assembling the second bracket 122 with the bottom housing 110. The design of the stepped surface 114 on the side wall 112 provides reliable support, and the overlap of the bent portion 132 of the mounting bracket 130 with the stepped surface 114 further enhances the stability of the connection. The two ends of the second bracket 122 are inserted through the mounting holes 133 and fixedly connected to the inner surface of the side wall 112 of the bottom housing 110, ensuring that the second bracket 122 will not move or loosen during installation. This structural design ensures that the second bracket 122 can be firmly mounted on the bottom housing 110, improving the strength and stability of the overall structure.

[0053] like Figure 1a-Figure 1c and Figure 5a 、 Figure 5bAs shown, the bench surface assembly 200 of the fitness bench is supported by the bottom cover 110 and the bracket assembly 120, and the bench surface assembly 200 includes a seat cushion 210 and a backrest 220; one end of the seat cushion 210 is mounted on one of the side walls 112 of the bottom cover 110, and the other end of the seat cushion 210 is supported by the second bracket 122; the end of the backrest 220 adjacent to the seat cushion 210 is a first end 221, and the other end of the backrest 220 away from the seat cushion 210 is a second end 222, and the first end 221 of the backrest 220 is rotatable relative to the seat cushion 210, and the backrest 220 includes a flat state and a flip state; in the flat state, the backrest 220 and the seat cushion 210 are located on the same plane and the second end 222 of the backrest 220 is supported by the other side wall 112 of the bottom cover 110, Figure 1a In the flip state, the backrest 220 leaves the bottom cover 110 from the second end 222 and flips to the desired angle, reference Figure 5a and Figure 5b .

[0054] In the above scheme, if Figure 1a-Figure 1c As shown, in the flat state, the seat cushion 210 and the backrest 220 together constitute the bench surface of the fitness bench, which can be used as a bench or for the user to lie down and perform training in different postures; Figure 5a and Figure 5b As shown, in the flipped state, the backrest 220 opens upward relative to the seat cushion 210 to the required training angle. The user can sit on the seat cushion 210 and lean against the backrest 220 to perform strength training in different postures. The opening angle of the backrest 220 relative to the seat cushion 210 is adjustable so that the backrest 220 has multiple different training angles. The required training angle depends on the user's specific training needs.

[0055] In some embodiments, the first bracket 121 is arranged below one end of the seat cushion 210 close to the backrest 220. This setting position of the first bracket 121 divides the space below the seat cushion 210 and the backrest 220 into two storage spaces: a shell can be set on the outer periphery of the storage space below the seat cushion 210 to form a chassis, and the chassis can accommodate motors, control panels, power supplies or fans and other equipment as needed to prevent the equipment from being exposed, protect the equipment and improve the safety and aesthetics of the fitness bench; the storage space below the backrest 220 is open for storing various fitness accessories, which is convenient for users to take.

[0056] In some embodiments, see Figure 3aA storage rack 140 is mounted on the upper surface of the bottom plate 111 of the bottom housing 110. The storage rack 140 is located in the storage space below the backrest 220. Dumbbells and other fitness accessories can be placed on the storage rack 140. Specifically, the storage rack 140 has a plurality of storage slots that are adapted to the size of the dumbbell bar. The dumbbells can be stored on the storage rack 140 by placing the dumbbell bar in the storage slots.

[0057] To facilitate the description of the present application, the side surface of the backrest 220 facing away from the seat cushion 210 in the flipped state, that is, the back side of the side surface of the backrest 220 for the user to lean on, is called the back side of the backrest 220.

[0058] In some embodiments, as Figure 5a-Figure 6 As shown, a support rod 310 is provided on the back of the backrest 220. The first end 311 of the support rod 310 is hinged to the back of the backrest 220. The second end 312 of the support rod 310 is provided with a sliding block 320. The sliding block 320 is hollow and is sleeved on the second bracket 122 to drive the second end 312 of the support rod 310 to slide along the second bracket 122. The second bracket 122 has two or more adjustment holes 123. A stopper 330 is provided on one side of the sliding block 320 corresponding to the adjustment hole 123. The stopper 330 can be used to limit the sliding block 320 to the adjustment hole 123, thereby supporting the backrest 220 at a corresponding angle through the support rod 310. In this solution, the limiting method of the support rod 310 is adjusted to adapt to the improvement of the base assembly 100. The second bracket 122 is cleverly used to achieve the sliding and limiting of the support rod 310, without the need to add other components to cooperate with the support rod 310, simplifying the structure and reducing costs.

[0059] The limit member 330 is implemented using existing pull pins and other components. When the angle of the backrest 220 needs to be adjusted, the pull pin is pulled out from the adjustment hole 123, the backrest 220 is adjusted to the target angle, and the pull pin is released to insert the pull pin into the corresponding adjustment hole 123 at the target angle.

[0060] In order to increase the adjustment gears of the backrest 220 angle, the number of adjustment holes 123 can be increased on the second bracket 122. Figure 5a and Figure 5b In the embodiment shown, there are four adjustment holes 123, which correspond to flipping the backrest 220 and supporting it at 30°, 45°, 60° and 85° respectively. The support state at each angle is as follows: Figure 7 It is understood that those skilled in the art can also design other angles as needed.

[0061] In some embodiments, see further Figure 6The sliding block 320 is provided with a roller 340, and the rolling surface of the roller 340 contacts the surface of the second bracket 122, so that the roller 340 and the second bracket 122 are in rolling engagement. The roller 340 can provide good guidance for the sliding of the sliding block 320 relative to the second bracket 122, reducing friction during the sliding process, and making the gear adjustment of the backrest 220 smoother.

[0062] In some embodiments, the fitness bench further includes a tension arm 410, one end of which is rotatably connected to the back of the backrest 220 so that the tension arm 410 is stored within the back range of the backrest 220 (i.e., the tension arm 410 does not protrude outside the back of the backrest 220, see Figure 5a state) or rotated outward relative to the backrest 220 to a desired angle (see Figure 2a 、 Figure 2b as well as Figure 12a-12d In the state shown, the bottom cover 110 is open in the width direction of the fitness bench so as not to hinder the rotation of the tension arm 410 within its rotation range. Thus, the tension arm 410 can rotate and open to a desired angle relative to the backrest 220 when the backrest 220 is in both the flat and flipped states. It will be understood that the desired angle is determined based on the user's different training postures and can be any angle within the rotation range of the tension arm 410.

[0063] After the base assembly 100 is improved, the two side walls 112 of the bottom cover 110 respectively cover the two ends of the fitness bench in the longitudinal direction, and the two sides of the bottom cover 110 in the width direction are open. This design allows the outer side of the tension arm 410 to be unobstructed when the backrest 220 is in the flat state. Therefore, when the backrest 220 is in the flat state, the tension arm 410 can be opened outward to adjust the angle, allowing the user to lie on the backrest 220 for strength training. This technical solution can be achieved simultaneously by simplifying the structure of the base assembly 100, further broadening the use scenarios of the fitness bench, improving the flexibility of the fitness bench application, providing users with a more comfortable experience, and meeting the needs of different posture training.

[0064] In some embodiments, as Figures 8-10As shown, an arm adjustment seat 500 is also mounted on the back of the backrest 220. The arm adjustment seat 500 can be used to mount the tension arm 410. The arm adjustment seat 500 is positioned near the second end 222 of the backrest 220. The arm adjustment seat 500 forms mounting surfaces 510 on either side of the backrest 220 in the width direction. The mounting surfaces 510 are used to mount the tension arm 410. The two mounting surfaces 510 are respectively arranged at an angle α with the back of the backrest 220, with the opening directions of the two angles α facing away from each other toward the sides of the backrest 220. One end of the tension arm 410 is rotatably mounted on the mounting surface 510. The tension arm 410 is rotatably mounted in a plane parallel to the mounting surface 510, so that the tension arm 410 is mounted at an angle to the back of the backrest 220.

[0065] See further Figure 8 and Figure 9 One end of the tension arm 410 is provided with a mounting member 420. The mounting member 420 has a mating surface 421 opposite to the assembly surface 510. The plane on which the mating surface 421 is located is in the same direction as the longitudinal direction of the tension arm 410. The longitudinal direction of the tension arm 410 is the length direction of the tension arm 410. The direction of the plane on which the mating surface 421 is located being in the same direction as the longitudinal direction of the tension arm 410 includes the situation where the plane on which the mating surface 421 is located coincides with and is parallel to the longitudinal direction of the tension arm 410. The mounting member 420 is rotatably mounted on the arm adjustment seat 500 with the mating surface 421 abutting against the assembly surface 510, so that the tension arm 410 is mounted on the backrest 220 at the same angle as the assembly surface 510.

[0066] In the above solution, by improving the structure of the arm adjustment seat 500 for mounting the tension arm 410, the tension arm 410 is mounted on the mounting surface 510 arranged at an angle to the backrest 220. In this state, a certain angle is formed between the tension arm 410 and the back of the backrest 220, and the angle β formed by the two sets of tension arms 410 on the front side of the backrest 220 is greater than 180° (refer to Figure 12d ), changing the original solution in which the plane on which the two sets of tension arms 410 are located is parallel to the back of the backrest 220. This improved solution in this embodiment allows the user to further expand the degree of extension of the two arms when using the tension arms 410 for tension training while leaning against the backrest 220. This facilitates back extension or shoulder abduction training, enhancing the strength and flexibility of the back and shoulder muscles, and providing the user with a more professional and scientific training environment.

[0067] Since the mating surface 421 of the mounting member 420 rotates relative to the assembly surface 510 and rests on the assembly surface 510, a friction pad 430 is provided between the assembly surface of the mounting member 420 and the assembly surface 510, so that the rotation of the tension arm 410 is smoother and at the same time, wear between the mating surface 421 and the assembly surface 510 is avoided.

[0068] Because the mating surface 421 of the mounting member 420 is in the same longitudinal direction as the tension arm 410 and abuts the mounting surface 510, the mounting angle of the tension arm 410 relative to the backrest 220 is defined by the mounting surface 510. The outward expansion angle of the tension arm 410 can be determined by designing the angle between the mounting surface 510 and the back of the backrest 220. In some embodiments, the angle α between the mounting surface 510 and the back of the backrest 220 is 5° to 15°, specifically 10°. At this mounting angle, the angle between the two sets of tension arms 410 on the front side of the backrest 220 is approximately 200°. The aforementioned angle range is more suitable for the opening range of the human arm for outward expansion training, providing users with a more scientific and safe training scenario.

[0069] In some embodiments, as Figure 8 and Figure 9 As shown, a positioning member 440 is provided on the mounting member 420 near the rotation center of the mounting member 420, and a plurality of positioning holes 511 are provided on the assembly surface 510 on a circle with a point coaxial with the rotation center of the mounting member 420 as the center and a distance from the positioning member 440 to the rotation center of the mounting member 420 as the radius. When the tension arm 410 is rotated to a desired angle, the positioning member 440 is inserted into the positioning hole 511 at the corresponding angle, thereby fixing the tension arm 410 at the desired angle.

[0070] In the above solution, positioning member 440 is mounted on mounting member 420. As tension arm 410 rotates to the corresponding angle, mounting member 420 rotates synchronously with tension arm 410, and thus positioning member 440 also rotates synchronously with tension arm 410. Positioning hole 511, defined on mounting surface 510, remains relatively stationary. In this solution, positioning member 440 rotates along with tension arm 410, improving the existing active positioning mechanism, where positioning member 440 remains stationary while positioning hole 511 rotates, to a passive positioning mechanism. Since positioning member 440 and tension arm 410 rotate synchronously, accurate positioning and alignment are ensured, reducing errors caused by variations in the relative positions of positioning member 440 and positioning hole 511.

[0071] Optionally, the positioning member 440 can enable components such as a pull pin to pull the positioning member 440 outward when adjusting the angle of the pulling arm 410, so that the positioning member 440 disengages from the positioning hole 511. When the pulling arm 410 is rotated to a suitable angle, the positioning member 440 is aligned with the positioning hole 511 at the angle. The positioning member 440 is released and inserted into the positioning hole 511 to achieve angle adjustment and positioning of the pulling arm 410.

[0072] In some embodiments, the rotation angle range of the tension arm 410 relative to the arm adjustment seat 500 is 0° to 160°. Within this range, with the rotation center of the positioning member 440 as the center, the angle between the radii of each two adjacent positioning holes 511 is 20°. In this solution, the opening range and angle of the tension arm 410 are limited, so that the tension arm 410 has eight angle adjustment gears, and the state of the tension arm in each gear is as follows: Figure 13 As shown, it can meet the different training needs of users at various angles and improve the flexibility of use of the fitness bench.

[0073] In some embodiments, see further Figure 9 The mounting member 420 includes two oppositely arranged mounting plates 422. Each tension arm 410 is mounted on the adjusting arm seat 500 through the two mounting plates 422. The adjusting arm seat 500 has two corresponding mounting surfaces 510, respectively formed with fixed plate surfaces 520. The fixed plate surfaces 520 are opposite to and parallel to the mounting surfaces 510. The two mounting plates 422 are coaxially rotatably mounted between the mounting surface 510 and the fixed plate surface 520 and are respectively abutted against the mounting surface 510 and the fixed plate surface 520. The two mounting plates 422 are both fixedly connected to the tension arm 410.

[0074] The above scheme provides a specific implementation structure of the mounting member 420, which includes two relatively arranged mounting plates 422. The mounting plates 422 are fixedly connected to the pulling arm 410 from both sides of the pulling arm 410, respectively, and can provide a stable connection for the pulling arm 410. The two mounting plates 422 are respectively abutted against the assembly surface 510 and the fixed plate surface 520, which can more stably and reliably fix the pulling arm 410 on the adjusting arm seat 500. The positioning member 440 passes through the two mounting plates 422 and is inserted into the positioning hole 511 on the assembly surface 510 to achieve angle positioning. The two mounting plates 422 have a simple structure, are easy to assemble and have low cost.

[0075] In some embodiments, the fitness bench further includes a force transmission system 600 and a resistance system 700. Figure 11 As shown, the force transmission system 600 includes a force transmission base 610 that slides with the back of the backrest 220, four fixed pulleys 620 provided on the back of the backrest 220, and three movable pulleys 630 installed on the force transmission base 610. The four fixed pulleys 620 are close to the second end 222 of the backrest 220, and the force transmission base 610 is located on the side of the fixed pulley 620 away from the second end 222 of the backrest 220. A pull rope 640 alternately runs between the circumferences of the four fixed pulleys 620 and the circumferences of the three movable pulleys 630. Both ends of the pull rope 640 are passed through the tension arm 410 to form a force-applying end 641 for the user to apply force; the resistance system 700 is connected to the force transmission base 610 and provides a resistance opposite to the force of the pull rope 640 to the force transmission base 610.

[0076] The force transmission system 600 utilizes pulleys and a pull cord 640 to transmit the resistance of the resistance system 700 to the user for strength training. A handle or other component for the user to grasp is typically provided at the end of the tension arm 410 away from the arm adjustment base 500. The pull cord 640 extends through a force-applying end 641 of the tension arm 410 and connects to the grip for user use. In the above embodiment, the force transmission system 600, comprising four fixed pulleys 620 and three movable pulleys 630, can transmit greater resistance to the user, thereby increasing the intensity of resistance training.

[0077] In some embodiments, as Figure 8 and Figure 9 As shown, four fixed pulleys 620 can be arranged in the arm adjustment seat 500, and the two fixed pulleys 620 located on both sides are respectively installed between the two mounting plates 422, and the rotating shaft coincides with the rotation center of the tension arm 410, so that the pull rope 640 passes through the fixed pulley 620 located between the two mounting plates 422 and directly enters the tension arm 410, making the path of the pull rope 640 more reasonable and facilitating the transmission of force.

[0078] In some embodiments, as Figure 12a As shown, the resistance system 700 includes a resistance rope 710, one end of which is connected to the force transmission base 610, and the other end of the elastic power rope is connected to the second bracket 122. Specifically, the force transmission base 610 is provided with six first connection ends 611, and the second bracket 122 is provided with a connecting frame 150, which is provided with six second connection ends 151. The resistance rope 710 is connected between the first connection ends 611 and the second connection ends 151 in a one-to-one correspondence. The resistance rope 710 is specifically an elastic power rope; the first connection ends 611 and the second connection ends 151 are specifically hooks.

[0079] In other embodiments, the resistance system 700 includes a motor (not shown in the figure), the output end of the motor is connected to the force transmission seat 610, and provides a force away from the fixed pulley 620 to the force transmission seat 610 to provide resistance for training. The output of the motor is more flexible, and can allow the user to select the appropriate resistance level and output mode according to personal exercise needs or stages, so that the fitness bench can support a variety of exercise methods, thereby increasing the diversity of user exercise and improving the personalization and flexibility of the fitness bench. When using a motor as a resistance source, the fitness bench can also be equipped with a user input terminal and a controller as needed. The user input terminal is used for the user to select a training mode and input it into the controller. The controller is used to adjust the magnitude of the motor output force or the output mode according to the training mode selected by the user, thereby switching to the corresponding training mode.

[0080] In yet other embodiments, the resistance system 700 may include both a resistance rope 710 and a motor. The motor is used to provide resistance during training, and the resistance rope 710 is always in a taut state to provide the necessary tension for the pull rope 640. In this solution, the number of resistance ropes 710 can be reduced. The resistance rope 710 is mainly used to provide the tension required for tensioning the pull rope 640, preventing the pull rope 640 from slacking and falling off the pulley when the motor is not started or in the initial stage of startup. At the same time, it ensures that this tension does not adversely affect the force output by the motor to the pull rope 640. For example, two resistance ropes 710 are provided, and the maximum load-bearing capacity of each resistance rope 710 is 10 catties.

[0081] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0082] The above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention. They should all be included in the scope of the technical solution for which protection is requested in the present invention.

Claims

1. A fitness bench, characterized in that: include: A bottom cover, comprising a bottom plate and two side walls extending from both ends of the bottom plate in a length direction toward the same side of the bottom plate; A bracket assembly comprising: a first bracket, which is mounted on the bottom plate of the bottom cover and is located on the same side as the two side walls; a second bracket mounted on the top of the first bracket and connecting the two side walls of the bottom cover; A stool seat assembly, which is supported by the bottom cover and the bracket assembly, and the stool seat assembly includes: a seat cushion, one end of the seat cushion being mounted on one of the side walls of the bottom cover, and the other end of the seat cushion being supported by the second bracket; A backrest, wherein the end of the backrest adjacent to the seat cushion is a first end, and the other end of the backrest away from the seat cushion is a second end. The first end of the backrest is rotatably arranged relative to the seat cushion. The backrest includes a flat state and a flipped state. In the flat state, the backrest and the seat cushion are located on the same plane and the second end of the backrest is supported by the other side wall of the bottom cover. In the flipped state, the backrest flips to a desired angle from the second end away from the bottom cover.

2. The fitness bench according to claim 1, wherein: The bottom cover is an integrally formed structure, and an arc-shaped transition fillet is formed at the connection position between the bottom plate and the two side walls.

3. The fitness bench according to claim 1, wherein: The two ends of the second bracket are respectively mounted on the two side walls through mounting brackets, the opposite surfaces of the two side walls of the bottom cover are inner surfaces, and the inner surfaces of the two side walls are respectively recessed inward near the top to form step surfaces, the mounting bracket includes a bracket body and a bent portion located at the top of the bracket body, the bent portion is bent relative to the bracket body, the bent portion overlaps the step surface, the bracket body is provided with a mounting hole, the two ends of the second bracket are respectively sleeved in the mounting holes of the two mounting brackets, the bracket body is fixedly connected to the inner surfaces of the side walls of the bottom cover to fix the two ends of the second bracket respectively on the two side walls of the bottom cover.

4. The fitness bench according to claim 1, wherein: A support rod is provided on the back side of the backrest, the first end of the support rod is hinged to the back side of the backrest, and a sliding block is provided on the second end of the support rod. The sliding block is hollow and is sleeved on the second bracket to drive the second end of the support rod to slide along the second bracket. The second bracket is provided with more than two adjustment holes, and a limiting piece is provided on the side of the sliding block corresponding to the adjustment hole. The sliding block can be limited to the adjustment hole by the limiting piece, so that the backrest can be supported at a corresponding angle through the support rod.

5. The fitness bench according to claim 4, characterized in that: The sliding block is provided with a roller, and the rolling surface of the roller contacts the surface of the second bracket so that the roller and the second bracket are in rolling cooperation.

6. The fitness bench according to claim 4, characterized in that: It also includes a pulling arm, one end of which is rotatably connected to the back of the backrest so that the pulling arm can be stored within the range of the back of the backrest or rotated outward to a desired angle relative to the backrest. The bottom cover is open in the width direction of the fitness bench so as not to hinder the rotation of the pulling arm in its rotation range, so that the pulling arm can be rotated relative to the backrest and opened to a desired angle when the backrest is in the flat state and the flipped state.

7. The fitness bench according to claim 6, characterized in that: It also includes a force transmission system and a resistance system, the force transmission system includes a force transmission seat that slides with the back side of the backrest, four fixed pulleys provided on the back side of the backrest, and three movable pulleys installed on the force transmission seat, the four fixed pulleys are close to the second end of the backrest, the force transmission seat is located on the side of the fixed pulley away from the second end of the backrest, a pull rope alternately runs between the circumferences of the four fixed pulleys and the circumferences of the three movable pulleys, both ends of the pull rope are passed through the pulling arm to form force-applying ends for the user to apply force, and the resistance system is connected to the force transmission seat and provides a resistance to the force transmission seat that is opposite to the force of the pull rope.

8. The fitness bench according to claim 7, characterized in that: The resistance system includes a resistance rope, six first connection ends are provided on the force transmission seat, a connecting frame is provided on the second bracket, and six second connection ends are provided on the connecting frame. Resistance ropes are connected one-to-one between the first connection ends and the second connection ends.

9. The fitness bench according to claim 7, characterized in that: The resistance system includes a motor, and an output end of the motor is connected to the force transmission seat to provide a force to the force transmission seat away from the fixed pulley.

10. The fitness bench according to claim 1, wherein: The first bracket is arranged below one end of the seat cushion close to the backrest to form a unified storage space below the backrest. A storage rack is provided in the storage space below the backrest, and the storage rack is installed on the bottom cover.

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