Fitness stool

Abstract

The utility model relates to a fitness stool which comprises a cushion, a backrest, two sets of tension arm components and an arm adjusting seat, the first end of the backrest is close to the cushion, and the second end, away from the first end, of the backrest can turn over relative to the cushion. The two sets of tension arm components are respectively and rotatably arranged on the back surface of the backrest; the second end, close to the backrest, of the arm adjusting seat is installed on the back face of the backrest, assembling surfaces are formed on the two sides, in the width direction of the backrest, of the arm adjusting seat respectively, included angles are formed between the two assembling surfaces and the back face of the backrest respectively, and the opening directions of the two included angles face the two sides of the backrest in the mode that the two included angles deviate from each other. One end of the tension arm assembly is rotatably installed on the assembling surface, and the tension arm assembly is rotatably arranged in a plane parallel to the assembling surface. According to the fitness stool provided by the utility model, the two sets of tension arm components are arranged on the backrest at an angle, so that the two sets of tension arm components are expanded backwards and outwards relative to the front surface of the backrest, and back expansion or shoulder abduction training is facilitated.

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] A fitness bench usually includes a seat cushion and a backrest. The seat cushion is for the user to sit or lie down, and the backrest can be flipped relative to the seat cushion and supported at a certain angle. Two tension arms are provided on the inner side of the backrest. The two tension arms can be opened relative to the backrest. Tension training is performed through the pull ropes led out from the tension arms to achieve strength training in different postures of the user.

[0004] However, the tension arms of existing fitness benches cannot meet the user's requirements for the degree of arm opening during tension training, which may cause problems such as inadequate arm posture and inability to open the arms to meet training requirements during training. Utility Model Content

[0005] In response to at least one shortcoming in the related art, the present invention provides a fitness bench in which two sets of tension arm assemblies are installed at an angle on the backrest, so that the two sets of tension arm assemblies expand backward and outward relative to the front of the backrest, prompting the user to open his arms more widely, which is helpful for back extension or shoulder abduction training.

[0006] The present application provides a fitness bench, comprising a seat cushion, a backrest, two sets of tension arm assemblies and an arm adjustment seat; a first end of the backrest is arranged close to the seat cushion, and a second end of the backrest away from the first end can be flipped relative to the seat cushion, the backrest including a flat state coplanar with the seat cushion and a flipped state supported at a training angle relative to the seat cushion; the two sets of tension arm assemblies are respectively rotatably arranged on the back side of the backrest, so that the tension arm assemblies are stored within the range of the back side of the backrest or the two sets of tension arm assemblies are rotated outward relative to the backrest and opened to a desired angle; the second end of the arm adjustment seat close to the backrest is installed on the back side of the backrest, and the arm adjustment seat is respectively formed with assembly surfaces on both sides in the width direction of the backrest, and the two assembly surfaces are respectively arranged at an angle with the back side of the backrest, and the opening directions of the two angles are opposite to each other toward the two sides of the backrest, one end of the tension arm assembly is rotatably mounted on the assembly surface and the tension arm assembly is rotatably arranged in a plane parallel to the assembly surface.

[0007] In the above scheme, the tension arm assembly is installed on an assembly surface set at an angle to the backrest, so that the tension arm assembly is installed at an angle on the back of the backrest. The angle formed by the two sets of tension arm assemblies on the front side of the backrest is greater than 180°. The degree of opening of the user's two arms needs to be further increased, which is helpful for back extension or shoulder abduction training.

[0008] In some embodiments, the tension arm assembly includes a tension arm and a mounting member connecting the tension arm to an arm adjustment seat. The mounting member has a mating surface opposite the mounting surface, with the plane on which the mating surface lies oriented in the same direction as the longitudinal direction of the tension arm. The mounting member is rotatably mounted on the arm adjustment seat with the mating surface abutting the mounting surface, so that the tension arm is mounted on the backrest at the same angle as the mounting surface. In this embodiment, the mounting angle of the tension arm relative to the backrest is defined by the mounting surface, and the outward expansion angle of the tension arm is determined by the design of the angle between the mounting surface and the back of the backrest.

[0009] In some embodiments, the angle between the mounting surface and the back of the backrest is 5° to 15°. The angle range provided in this solution is more suitable for the opening range of the human arm for outward extension training, providing users with a more scientific and safe training scenario.

[0010] In some embodiments, the mounting member includes two opposing mounting plates, each tensioning arm being mounted to the arm adjustment seat via the two mounting plates. The arm adjustment seat is provided with a fixing plate surface corresponding to each of the two mounting surfaces. The fixing plate surface is opposite and parallel to the mounting surface. The two mounting plates are coaxially rotatably mounted between the mounting surface and the fixing plate surface, respectively abutting the mounting surface and the fixing plate surface. Both mounting plates are fixedly connected to the tensioning arm. The mounting plates in this embodiment provide a stable connection for the tensioning arm. The two mounting plates abutting the mounting surface and the fixing plate surface, respectively, can more stably and reliably secure the tensioning arm to the arm adjustment seat.

[0011] In some embodiments, a positioning member is provided on the tension arm assembly near its rotational center. A plurality of positioning holes are defined on the assembly surface along a circle centered at a point coaxial with the rotational center of the tension arm assembly and having a radius equal to the distance between the positioning member and the rotational center of the tension arm assembly. When the tension arm assembly is rotated to a desired angle, the positioning member is inserted into the positioning holes at the corresponding angle to secure the tension arm at the desired angle. In this embodiment, passive positioning, in which the positioning member rotates with the tension arm assembly, ensures accurate positioning and alignment, reducing errors caused by variations in the relative positions of the positioning member and the positioning holes.

[0012] In some embodiments, the rotation angle range of the tension arm assembly relative to the arm adjustment seat is 0°

[0013] The angle between the radius of each two adjacent positioning holes is 20 degrees. The tension arm assembly in this solution has eight angle adjustment gears, which can meet the different training needs of users at various angles and improve the flexibility of the fitness bench.

[0014] In some embodiments, the bench further includes a base assembly for supporting the seat and backrest. The base assembly comprises a bottom housing and a bracket assembly mounted on the bottom housing. The bottom housing is an integrally formed structure comprising a base plate and two sidewalls extending toward the seat and backrest, respectively. The bracket assembly comprises a first bracket mounted on the base plate and a second bracket mounted on top of the first bracket and connecting the two sidewalls. This solution simplifies the bench's base structure, shortens the production and assembly cycle, and reduces production costs. Furthermore, without compromising overall strength, the bench provides more storage space, improving space utilization.

[0015] 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 backrest, and 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 is inserted into the adjustment hole to limit the sliding block, 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, and the sliding and limiting of the support rod are cleverly achieved with the help of the second bracket. There is no need to add other components to cooperate with the support rod, which simplifies the structure and reduces costs.

[0016] In some embodiments, the bottom cover is open across the width of the bench to avoid obstructing the arm assembly's rotational range. This allows the arm to be rotated and opened to the desired angle in both the flat and flipped backrest positions. This solution, while simultaneously achieving this through the simplified structure of the base assembly, further broadens the bench's usage scenarios, increases its flexibility, provides a wider user experience, and meets the needs of various posture training techniques.

[0017] In some embodiments, the fitness bench further includes a force transmission system and a resistance system. The force transmission system includes a force transmission base that slides with the back of the backrest, four fixed pulleys disposed within the arm adjustment base, and three movable pulleys mounted on the force transmission base. The force transmission base is located on the side of the second end of the fixed pulley away from the backrest. A pull rope alternately passes between the circumferences of the four fixed pulleys and the circumferences of the three movable pulleys. Both ends of the pull rope extend through the tension arms to form force-applying ends for the user to apply force. The resistance system is connected to the force transmission base and provides resistance to the force transmission base opposite to the force applied by the pull rope. In this embodiment, 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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:

[0019] Figure 1a A three-dimensional diagram of the fitness bench provided by an embodiment of the present utility model in a flat-laying state;

[0020] Figure 1b A top view of the fitness bench provided by an embodiment of the present invention in a flat-lay state;

[0021] Figure 1c This is a front view of the fitness bench provided by an embodiment of the present utility model in a flat state;

[0022] Figure 2a A three-dimensional diagram of the backrest of the fitness bench provided by an embodiment of the utility model in a flipped state;

[0023] Figure 2b A front view of the backrest of the fitness bench provided by an embodiment of the utility model in a flipped state;

[0024] Figure 3 A partial enlarged view of the arm adjustment seat of the fitness bench provided in an embodiment of the present utility model;

[0025] Figure 4 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;

[0026] Figure 5 A schematic diagram of the back of a fitness bench provided by an embodiment of the present invention;

[0027] Figure 6a 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;

[0028] Figure 6bFigure 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;

[0029] Figure 6c A front view of the fitness bench provided by an embodiment of the present invention in a flipped state with the tension arms opened;

[0030] Figure 6d A top view of the fitness bench provided by an embodiment of the present invention in a flipped state with the tension arms opened;

[0031] Figure 7 Schematic diagram of the pull arm of the fitness bench provided by the embodiment of the utility model rotating to various gears;

[0032] Figure 8a A three-dimensional diagram of a base assembly of a fitness bench provided in an embodiment of the present utility model;

[0033] Figure 8b A front view of a base assembly of a fitness bench provided by an embodiment of the present invention;

[0034] Figure 9 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;

[0035] Figure 10 for Figure 2a A partial enlarged view of the middle part A;

[0036] Figure 11 A schematic diagram of various adjustment positions of the backrest of a fitness bench provided in an embodiment of the present utility model;

[0037] Figure 12a 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;

[0038] Figure 12b A top view of the fitness bench provided by an embodiment of the present invention in a flat position with the tension arms opened;

[0039] Figure 13 This is 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, so as to illustrate the force transmission system.

[0040] In the picture:

[0041] 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; 160, adjustable foot; 210, seat cushion; 220, backrest; 221, first end of backrest; 222, second end of backrest; 310, support rod; 311, first end of support rod End; 312, the second end of the support rod; 320, the sliding block; 330, the limit member; 340, the roller; 400, the tension arm assembly; 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 adjustment arm 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

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] The embodiment of the present application provides a fitness bench, such as Figure 1a-Figure 2b As shown, the fitness bench includes a seat cushion 210 and a backrest 220. The first end 221 of the backrest 220 is arranged close to the seat cushion 210, and the second end 222 of the backrest 220 is away from the first end 221 and can be flipped relative to the seat cushion 210. The backrest 220 includes a flat state coplanar with the seat cushion 210 and a flipped state supported at a training angle relative to the seat cushion 210. 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. The flat state is as shown in FIG. Figure 1a-Figure 1c In the flip state, the backrest 220 is opened upward relative to the seat cushion 210 and supported at the desired training angle, the user can sit on the seat cushion 210 while leaning against the backrest 220 for strength training in different postures, the flip state is as shown Figure 2a and Figure 2b The opening angle of the backrest 220 relative to the seat cushion 210 is adjustable so that the backrest 220 has a plurality of different training angles, and the required training angles are determined according to the specific training needs of the user.

[0047] 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.

[0048] like Figure 2a-Figure 7As shown, two sets of tension arm assemblies 400 are rotatably provided on the back of the backrest 220. By rotating the tension arm assemblies 400, the tension arm assemblies 400 can be stored within the range of the back of the backrest 220 (as shown in FIG. Figure 2a and Figure 2b or rotate the two sets of tension arm assemblies 400 outward relative to the backrest 220 and open them to the desired angle (as shown in FIG. Figure 6a-6d Specifically, one end of the tension arm assembly 400 is rotatably mounted on the back of the backrest 220, proximate to the second end 222 of the backrest 220. A gripping member, such as a handle, can be mounted on the other end of the tension arm assembly 400. During use, the two tension arm assemblies 400 can be rotated relative to the backrest 220 and opened to a desired angle. Typically, the two tension arm assemblies 400 are opened to the same angle. The user leans against the backrest 220, grasps the gripping members with both hands, and pulls on them to perform training.

[0049] See further Figure 3-Figure 5 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 assembly 400. 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 both sides of the backrest 220 in the width direction. The mounting surfaces 510 are used to mount the tension arm assembly 400. The two mounting surfaces 510 are respectively positioned at an angle α to the back of the backrest 220, and the opening directions of the two angles α face away from each other toward the sides of the backrest 220. One end of the tension arm assembly 400 is rotatably mounted on the mounting surface 510, and the tension arm assembly 400 is rotatably mounted within a plane parallel to the mounting surface 510, so that the tension arm assembly 400 is mounted at an angle to the back of the backrest 220.

[0050] In the above solution, by improving the structure of the arm adjustment seat 500 for mounting the tension arm assembly 400, the tension arm assembly 400 is mounted on the mounting surface 510 set at an angle to the backrest 220. In this state, a certain angle is formed between the tension arm assembly 400 and the back of the backrest 220, and the angle β formed by the two sets of tension arm assemblies 400 on the front side of the backrest 220 is greater than 180° (e.g., Figure 6d The improved solution of the present application changes the original solution in which the plane where the two sets of tension arm assemblies 400 are located is parallel to the back of the backrest 220. When the user uses the tension arm assembly 400 to perform tension training while leaning against the backrest 220, the degree of extension of the two arms can be further increased, which helps to perform back extension or shoulder abduction training, enhances the strength and flexibility of the back and shoulder muscles, and provides users with a more professional and scientific training environment.

[0051] In some embodiments, as Figure 3-Figure 5As shown, the tension arm assembly 400 includes a tension arm 410 and a mounting member 420 connecting the tension arm 410 to the arm adjustment seat 500. The mounting member 420 has a mating surface 421 opposite the assembly surface 510, and the plane on which the mating surface 421 lies is oriented 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 lies being oriented 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 lies 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, thereby mounting the tension arm 410 on the backrest 220 at the same angle as the assembly surface 510.

[0052] In the above embodiment, because the mating surface 421 of the mounting member 420 is oriented longitudinally with 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 angle of the tension arm 410 is determined by the angle between the mounting surface 510 and the back of the backrest 220. Because the mating surface 421 of the mounting member 420 rotates relative to and abuts the mounting surface 510, a friction pad 430 is provided between the mounting surface 421 of the mounting member 420 and the mounting surface 510, thereby smoothing the rotation of the tension arm assembly 400 and preventing wear between the mating surface 421 and the mounting surface 510.

[0053] 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 tension arm assemblies 400 on the front side of the backrest 220 is approximately 200°. This angle range is more suitable for the human arm's extension training range, providing users with a more scientific and safe training environment.

[0054] In some embodiments, see further Figure 4 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.

[0055] The above solution provides a specific implementation structure of the mounting member 420. The mounting member 420 includes two oppositely disposed mounting plates 422. The mounting plates 422 are fixedly connected to the tension arm 410 from either side of the tension arm 410, providing a stable connection for the tension arm 410. The two mounting plates 422 are respectively abutted against the assembly surface 510 and the fixing plate surface 520, which can more stably and reliably fix the tension arm 410 to the arm adjustment 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 angular positioning. The two mounting plates 422 have a simple structure, are easy to assemble, and are low-cost. Optionally, a fixing rod is connected between the two mounting plates 422 to enhance the strength and stability of the connection between the two mounting plates.

[0056] In some embodiments, in order to realize the opening positioning and multi-angle adjustment of the tension arm assembly 400, as shown in FIG. Figure 3-Figure 7 As shown, a positioning member 440 is provided on the tension arm assembly 400 near the rotation center of the tension arm assembly 400, and a plurality of positioning holes 511 are provided on the assembly surface 510 on a circumference with a point coaxial with the rotation center of the tension arm assembly 400 as the center and a distance from the positioning member 440 to the rotation center of the tension arm assembly 400 as the radius. When the tension arm assembly 400 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.

[0057] In the above solution, the positioning member 440 is provided on the tension arm assembly 400. When the tension arm assembly 400 rotates to the corresponding angle, the positioning member 440 rotates simultaneously with the tension arm assembly 400. The positioning hole 511 is provided on the assembly surface 510 and is fixed relative to the positioning member 440. In this solution, the positioning member 440 rotates together with the tension arm assembly 400, improving the original active positioning structure in which the positioning member 440 does not move while the positioning hole 511 rotates to a passive positioning structure. Since the positioning member 440 and the tension arm assembly 400 rotate synchronously, the accuracy of positioning and alignment can be ensured, and the error caused by the relative position change between the positioning member 440 and the positioning hole 511 can be reduced. The tension arm assembly 400 is provided with only the positioning member 440, without the need to machine a large number of positioning holes 511. This simplifies the structure of the tension arm assembly 400, improves the strength of the tension arm assembly 400, and simplifies the manufacturing and assembly process.

[0058] Optionally, the positioning member 440 can use components such as a pull pin. When adjusting the angle of the tension arm assembly 400, the positioning member 440 is pulled outward so that the positioning member 440 disengages from the positioning hole 511. When the tension arm assembly 400 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 tension arm assembly 400.

[0059] When the tension arm 410 is rotatably mounted on the arm adjustment base 500 via the mounting member 420, the rotation center of the tension arm assembly 400 is located on the mounting member 420. The positioning member 440 is provided on the mounting member 420 near the rotation center. The mounting member 420 is fixedly connected to one end of the tension arm 410. The mounting member 420 simultaneously realizes the rotational installation and angular positioning functions of the tension arm 410. Specifically, the positioning member 440 passes through two oppositely disposed mounting plates 422 and is inserted into the positioning hole 511 on the assembly surface 510.

[0060] In some embodiments, the rotation angle range of the tension arm assembly 400 relative to the arm adjustment base 500 is 0° to 160°. Within this range, 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 assembly 400 are limited, so that the tension arm assembly 400 has eight angle adjustment gears. The state of the tension arm assembly 400 when it rotates to each gear is as follows: Figure 7 As shown, it can meet the different training needs of users at various angles and improve the flexibility of use of the fitness bench.

[0061] The fitness bench also includes a base assembly 100 for supporting a seat cushion 210 and a backrest 220. Figure 8a and Figure 8b As shown, the base assembly 100 includes a bottom cover shell 110 and a bracket assembly 120 installed on the bottom cover shell 110. The bottom cover shell 110 is an integrally molded structure. The bottom cover shell 110 includes a bottom plate 111 and two side walls 112 located on both sides of the bottom plate 111 and extending toward the seat cushion 210 and the backrest 220 respectively. The bracket assembly 120 includes a first bracket 121 installed on the bottom plate 111 and a second bracket 122 installed on the top of the first bracket 121 and connecting the two side walls 112. The longitudinal direction of the first bracket 121 is consistent with the longitudinal direction of the two side walls 112.

[0062] In the above technical solution, by simplifying the structure of the base assembly 100 of the fitness bench, the original structure of bent wood plus inner liner is changed. Without reducing the overall strength, the base assembly 100 provides more storage space for the fitness bench and improves space utilization. At the same time, due to the simplification of the structure, the production cost is reduced and the production and assembly efficiency is improved.

[0063] In some embodiments, the connection between the bottom plate 111 and the two side walls 112 is formed with a curved transition fillet 113. This solution can further simplify the structure and enhance the aesthetics of the fitness stool. Optionally, the bottom cover 110 is 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.

[0064] In some embodiments, as Figure 8a-Figure 9 As shown, the two ends of the second bracket 122 are respectively installed on the two side walls 112 of the bottom cover 110 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, and 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.

[0065] 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.

[0066] 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 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.

[0067] In some embodiments, a 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 is formed with 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. Figure 1a-Figure 1c .

[0068] In some embodiments, four adjustable feet are mounted on the bottom of the base plate 111 to allow for height adjustment of the exercise bench. The specific implementation of the adjustable feet can be referenced in the prior art and will not be described in detail in this application. Furthermore, a wheel 170 is optionally mounted on one end of the bottom of the base plate 111 to facilitate movement of the exercise bench by lifting the other end thereof.

[0069] In some embodiments, as Figure 2a and Figure 2b 、 Figure 6a-6c as well as Figure 10 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 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 is inserted into the adjustment hole 123 to limit the position of the sliding block 320, 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.

[0070] The limiter 330 is realized by 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 to adjust the backrest 220 to the target angle. The pull pin is released and inserted into the corresponding adjustment hole 123 at the target angle. In order to increase the adjustment gear of the backrest 220 angle, the number of adjustment holes 123 can be increased on the second bracket 122. Figure 11 In the illustrated embodiment, four adjustment holes 123 are provided, corresponding to flipping the backrest 220 to 30°, 45°, 60° and 85°, respectively. However, it is understandable that those skilled in the art can also design other angles as needed.

[0071] In some embodiments, as Figure 10As shown, the 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 a good guide for the sliding of the sliding block 320 relative to the second bracket 122, reduce friction during the sliding process, and make the gear adjustment of the backrest 220 smoother.

[0072] In some embodiments, 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 assembly 400 within its rotation range, so that the tension arm 410 can be rotated and opened to a desired angle when the backrest 220 is in a flat state and a flipped state.

[0073] After the base assembly 100 is improved, the two side walls 112 of the bottom cover 110 respectively cover the two ends of the length direction of the fitness bench, and the two sides of the bottom cover 110 in the width direction are open. This design makes it possible for the outer side of the tension arm assembly 400 to be unobstructed when the backrest 220 is in a flat state. Therefore, when the backrest 220 is in a flat state, the tension arm assembly 400 can also be opened outward for angle adjustment. The user can lie on the backrest 220 for strength training. When the backrest 220 is in a flat state, the tension arm 410 is opened as shown in FIG. Figure 12a and Figure 12b 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, bringing more experience to users and meeting the needs of different posture training.

[0074] like Figure 13 As shown, the fitness bench also includes a force transmission system 600 and a resistance system 700. 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 in the arm adjustment base 500, and three movable pulleys 630 installed on the force transmission base 610. 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 application end 641 for the user to apply force; the resistance system 700 is connected to the force transmission base 610 and provides the force transmission base 610 with a resistance opposite to the force of the pull rope 640.

[0075] The force transmission system 600 uses 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 from the tension arm 410 through a force-applying end 641 connected to the grip for user use. In this embodiment, the force transmission system 600, comprising four fixed pulleys 620 and three movable pulleys 630, can transmit greater resistance to the user, increasing the intensity of resistance training.

[0076] In some embodiments, see further Figure 3 and Figure 13 The two fixed pulleys 620 on both sides of the four fixed pulleys 620 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.

[0077] In some embodiments, as Figure 6a 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.

[0078] In other embodiments, the resistance system 700 includes a motor (not shown in the figure), and the output end of the motor is connected to the force transmission seat 610 to provide a force to the force transmission seat 610 away from the arm adjustment seat 500 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 end and a controller as needed. The user input end 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.

[0079] 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.

[0080] 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.

[0081] 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: cushion; a backrest, wherein a first end of the backrest is disposed proximate to the seat cushion, and a second end of the backrest, remote from the first end, is flippable relative to the seat cushion, the backrest including a flat state coplanar with the seat cushion and a flipped state supported relative to the seat cushion at a training angle; Two sets of tension arm assemblies are rotatably disposed on the back surface of the backrest, so that the tension arm assemblies are stored within the range of the back surface of the backrest or the two sets of tension arm assemblies are rotated outward relative to the backrest and opened to a desired angle; An arm adjustment seat, the second end of which is close to the backrest is installed on the back side of the backrest, and the arm adjustment seat is formed with assembly surfaces on both sides of the width direction of the backrest, and the two assembly surfaces are respectively set at an angle with the back side of the backrest, and the opening directions of the two angles are opposite to each other and face the two sides of the backrest, one end of the tension arm assembly is rotatably mounted on the assembly surface and the tension arm assembly is rotatably set in a plane parallel to the assembly surface.

2. The fitness bench according to claim 1, wherein: The pulling arm assembly includes a pulling arm and a mounting piece connecting the pulling arm and the arm adjustment seat. The mounting piece has a mating surface opposite to the assembly surface. The plane where the mating surface is located is in the same direction as the longitudinal direction of the pulling arm. The mounting piece is rotatably mounted on the arm adjustment seat and the mating surface is abutted against the assembly surface, so that the pulling arm and the assembly surface are mounted on the backrest at the same angle.

3. The fitness bench according to claim 2, characterized in that: The angle between the assembly surface and the back surface of the backrest is 5° to 15°.

4. The fitness bench according to claim 2, wherein: The mounting member includes two mounting plates arranged opposite to each other, each of the tension arms is mounted on the adjusting arm seat through the two mounting plates, and the adjusting arm seat is respectively formed with fixed plate surfaces corresponding to the two assembly surfaces, and the fixed plate surfaces are opposite to and parallel to the assembly surfaces, and the two mounting plates are coaxially rotatably mounted between the assembly surface and the fixed plate surfaces and are respectively abutted against the assembly surface and the fixed plate surfaces, and the two mounting plates are fixedly connected to the tension arm.

5. The fitness bench according to claim 1, wherein: A positioning piece is provided on the tension arm assembly near the rotation center of the tension arm assembly, and a plurality of positioning holes are provided on the assembly surface on a circle with a point coaxial with the rotation center of the tension arm assembly as the center and a distance from the positioning piece to the rotation center of the tension arm assembly as the radius. When the tension arm assembly is rotated to a desired angle, the positioning piece is inserted into the positioning hole at the corresponding angle to fix the tension arm at the desired angle.

6. The fitness bench according to claim 5, characterized in that: The rotation angle range of the tension arm assembly relative to the arm adjustment seat is 0° to 160°, and the angle between the radii of every two adjacent positioning holes is 20°.

7. The fitness bench according to claim 1, wherein: It also includes a base assembly for supporting the seat cushion and the backrest, the base assembly includes a bottom cover and a bracket assembly installed on the bottom cover, the bottom cover is an integrally formed structure, the bottom cover includes a bottom plate and two side walls located on both sides of the bottom plate and extending toward the seat cushion and the backrest respectively, the bracket assembly includes a first bracket installed on the bottom plate and a second bracket installed on the top of the first bracket and connecting the two side walls.

8. The fitness bench according to claim 7, characterized in that: The back side of the backrest is provided with a support rod, the first end of the support rod is hinged to the backrest, the second end of the support rod is provided with a sliding block, 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 adjusting hole, and the sliding block can be limited by inserting the limiting piece into the adjusting hole to support the backrest at a corresponding angle through the support rod.

9. The fitness bench according to claim 7, characterized in that: The bottom cover is opened in the width direction of the fitness bench so as not to hinder the rotation of the tension arm assembly in its rotation stroke, so that the tension arm can be rotated and opened to a desired angle when the backrest is in the flat state and the flipped state.

10. The fitness bench according to claim 2, wherein: 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 arranged in the arm adjustment seat, and three movable pulleys installed on the force transmission seat, 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 circumference of the four fixed pulleys and the circumference of the three movable pulleys, both ends of the pull rope are passed through the tension 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.

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