An adjustable bench

Abstract

This application discloses an adjustable bench, relating to the technical field of fitness equipment. It includes a main frame, a first support assembly, and a second support assembly. The first support assembly includes a first support plate, an adjusting support member, a sliding sleeve, a locking member, and a seat cushion. The first support plate is pivotally connected to the main frame. The adjusting support member is connected to the first support plate and has a connection point. The sliding sleeve is slidably fitted onto the outer circumference of the first support plate along its length. The sliding sleeve has a hollow portion that allows for clearance at the connection point. The locking member is used to lock or unlock the relative position between the sliding sleeve and the first support plate. The seat cushion is fixedly connected to the sliding sleeve. The clearance at the connection point by the hollow portion allows the maximum sliding stroke of the sliding sleeve relative to the first support plate to reach the maximum span of the hollow portion. This application has a simple structure and a reasonable design.

Description

Technical Field

[0001] This utility model relates to the technical field of fitness equipment, specifically to an adjustable bench. Background Technology

[0002] Fitness refers to activities involving various physical exercises and activities aimed at improving physical fitness, health, physique, and athletic performance. It includes aerobic exercise, strength training, flexibility training, and other forms, all designed to promote physical and mental well-being. Adjustable benches, as a type of fitness equipment designed specifically for abdominal training, have been widely accepted by customers.

[0003] Existing adjustable benches, such as the one disclosed in publication number EP4368258A2, can be used for fitness activities. In this design, the seat plate is connected to a bearing, which slides along a track within an adjusting frame, achieving a sliding connection between the seat plate and the track. An adjusting pin is connected to the seat plate and can be selectively inserted into any opening on the adjusting frame to adjust the seat plate. However, the connection structure between the seat plate and the adjusting frame is complex, with numerous parts, a cumbersome installation process, and high manufacturing costs.

[0004] Furthermore, an adjustable bench, as disclosed in US Publication No. 10589144B2, can be used for fitness exercises. In this bench, a mounting bracket is slidably connected to a seat support frame and can move between multiple positions by engaging and disengaging a sliding fastener with multiple position holes on the seat support frame. A curved seat component is connected to the seat support frame. To ensure sufficient sliding travel for the mounting bracket, the connection point between the curved seat component and the seat support frame needs to be located near the end of the mounting bracket's sliding travel, close to the pivot point of the support frame. However, to ensure good support for the seat support frame, the support point of the curved seat component needs to be located relatively close to the center of the seat support frame. Therefore, a sufficient distance needs to be maintained between the connection point of the curved seat component and the pivot point of the seat support frame. This results in the seat support frame needing sufficient length to ensure both sufficient sliding travel for the mounting bracket and good support from the curved seat component. Consequently, the overall structural design cannot efficiently utilize the entire length of the seat support frame.

[0005] Therefore, there is an urgent need to design an adjustable bench with a simple and reasonable structure. Utility Model Content

[0006] Therefore, in order to solve the problems of complex structure and unreasonable structural design of the aforementioned adjustable bench, this utility model provides an adjustable bench.

[0007] To achieve the above objectives, the technical solution provided by this utility model is as follows: An adjustable bench includes a main frame, a first support component, and a second support component, both of which are connected to the main frame; characterized in that the first support component comprises: A first support plate, pivotally connected to the main frame, includes a length direction extending horizontally along the adjustable bench and a width direction perpendicular to it. An adjusting support member is connected to a first support plate and has a connection point. The adjusting support member is used to support between the first support plate and the main frame to adjust the angle between the first support plate and the horizontal plane. A sliding sleeve is slidably fitted onto the outer circumferential surface of the first support plate along its length; the sliding sleeve is provided with a hollow portion that allows the connection point to be accommodated. A locking element, which is used to lock or unlock the relative positional relationship between the sliding sleeve and the first support plate; and a seat cushion, which is fixedly connected to the sliding sleeve; Specifically, by allowing the connection point to be recessed by the hollowed-out portion, the maximum sliding stroke of the sliding sleeve relative to the first support plate can reach the maximum span of the hollowed-out portion.

[0008] Optionally, the main frame is provided with a plurality of first support parts at intervals; the adjusting support includes a first support frame, one end of the first support frame is pivotally connected to a first support plate and has a pivot connection point, the connection point includes the pivot connection point, and the other end of the first support frame can be supported on any one of the first support parts; the pivot connection point is located in the hollow part.

[0009] Optionally, the main frame is provided with a first adjustable ladder, and the first adjustable ladder is provided with slot structures at intervals. The slot structures serve as the first support parts, and the first support frame can be engaged with any of the first support parts to adjust the angle between the first support plate and the horizontal plane.

[0010] Optionally, two pivot connection points are arranged at intervals along the pivot axis of both, and are respectively arranged at both ends of the width direction of the first support plate. Correspondingly, two hollow portions are arranged, and are respectively arranged at both ends of the width direction of the sliding sleeve.

[0011] Optionally, the adjusting support includes a first arc-shaped bracket, one end of which is fixedly connected to a first support plate and has a fixed connection point. The connection point includes the fixed connection point. The first arc-shaped bracket is provided with first support holes spaced apart. The main frame is provided with a first support pin. The first support pin can be inserted into any of the first support holes to fix the first arc-shaped bracket. The fixed connection point is located inside the hollow part.

[0012] Optionally, the fixed connection point between the first arc-shaped bracket and the first support plate is arranged at the middle position in the width direction of the first support plate, and the hollow part is correspondingly arranged at the middle position in the width direction of the sliding sleeve.

[0013] Optionally, the first support plate is generally rectangular in shape on the projection plane, and the sliding sleeve is a generally rectangular body that is hollow inside and adapted to the first support plate. The width of the first support plate and / or the sliding sleeve covers at least one-third of the width of the seat cushion.

[0014] Optionally, two sets of bushings are provided at intervals at both ends of the sliding sleeve along the sliding direction of the sleeve. The bushings are U-shaped, and two bushings are symmetrically arranged in each set, respectively wrapping around both sides of the width direction of the first support plate.

[0015] Optionally, the locking element includes a locking pin, and the sliding sleeve has a mounting hole on one or both of its width sides. The locking pin is connected to the mounting hole. The first support plate has a positioning hole on one or both of its width sides. The locking pin can be inserted into or removed from any positioning hole to lock or unlock the positional relationship between the sliding sleeve and the first support plate.

[0016] Optionally, the second support assembly includes a second support plate, a back pad, and a second support frame; the second support plate is pivotally connected to the main frame; the back pad is fixedly connected to the second support plate; the main frame is provided with a plurality of second support parts at intervals; one end of the second support frame is pivotally connected to the second support plate, and the other end can be supported on any of the second support parts to adjust the angle between the second support plate and the horizontal plane; And / or, the second support assembly includes a second support plate and a back pad, the second support plate being pivotally connected to the main frame, and the back pad being fixedly connected to the second support plate; the main frame is provided with a first pivot point, and both the first support plate and the second support plate are connected to the first pivot point; And / or, the second support assembly includes a second support plate and a back pad, the second support plate being pivotally connected to the main frame, and the back pad being fixedly connected to the second support plate; the main frame is provided with a first pivot point, and both the first support plate and the second support plate are connected to the first pivot point; the first support plate is provided with a recess, and the first support plate is configured such that when the second support plate is in a vertical state, the back pad portion falls into the recess; And / or, the second support assembly includes a second support plate and a back pad, the second support plate being pivotally connected to the main frame, and the back pad being connected to the second support plate; the main frame is provided with a second pivot point and a third pivot point at intervals, such that the distance between the second pivot point and the third pivot point forms a clearance zone, the first support plate being connected to the second pivot point, and the second support plate being connected to the third pivot point; And / or, the main frame includes a first support segment, a connecting segment, and a second support segment that are fixedly connected in sequence. One end of the first support segment can be supported on a support surface, and the other end is fixedly connected to the connecting segment. One end of the second support segment can be supported on a support surface, and the other end is fixedly connected to the connecting segment. Both the first support component and the second support component are connected to the connecting segment. And / or, the adjustable bench further includes a first support leg, a second support leg, a third support leg, and a fourth support leg, wherein the plane containing the first support leg and the second support leg is perpendicular to the plane containing the third support leg and the fourth support leg; the adjustable bench has a use state and a storage state; when the adjustable bench is in the use state, the first support leg and the second support leg act on the support surface; when the adjustable bench is in the storage state, the third support leg and the fourth support leg act on the support surface.

[0017] The technical solution provided by this utility model has the following beneficial effects: 1. By fitting a sliding sleeve onto the outer circumference of the first support plate, with the entire first support plate serving as a guide rail for the sliding sleeve, the connection between the sliding sleeve and the first support plate can be kept stable during the sliding process, and the position of the seat cushion can be adjusted; there are few parts, the installation process is convenient, and the overall structural design is simple. 2. The sliding sleeve is provided with a hollow part, which can accommodate the connection point, so that the maximum sliding stroke of the sliding sleeve relative to the first support plate can reach the maximum span of the hollow part. At the same time, the adjustable support can also provide good support for the first support plate, making reasonable use of the overall length of the first support plate, and the structural design is reasonable. 3. The first support plate has a generally rectangular frame structure, and the width of the first support plate and / or the sliding sleeve covers at least one-third of the width of the seat cushion, which can improve the stability of the seat cushion. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the usage state of Embodiment 1; Figure 2 This is an overall exploded view of Example 1; Figure 3 This is a schematic diagram of the sliding sleeve without a cavity in Embodiment 1; Figure 4 This is a bottom view of the sliding sleeve having a cavity in Embodiment 1; Figure 5 This is a schematic diagram of the hollow sliding sleeve and the first support plate in Embodiment 1; Figure 6 This is an exploded schematic diagram of the sliding sleeve and bushing with cavities in Embodiment 1; Figure 7 This is a cross-sectional view of the sliding sleeve, the first support plate, and the locking pin in Embodiment 1; Figure 8 This is a schematic diagram of the storage state in Embodiment 1; Figure 9 This is a schematic diagram of the first support plate and the second support plate in the second embodiment when both are in a horizontal state; Figure 10 This is a schematic diagram of the first support plate and the second support plate after adjusting to a certain angle in Embodiment 2; Figure 11 This is a schematic diagram of the second embodiment where the sliding sleeve does not have a cavity and the hollow part is only arranged in the middle of the sliding sleeve; Figure 12 This is a schematic diagram of the sliding sleeve having a cavity and the hollowed-out parts arranged at both ends and the middle of the sliding sleeve in the width direction in Embodiment 2; Figure 13 This is a bottom view of the sliding sleeve in Embodiment 2, where the sliding sleeve has a cavity and the hollowed-out parts are arranged at both ends and the middle of the sliding sleeve in the width direction; Figure 14 This is a schematic diagram of the first support plate and the second support plate in the third embodiment when both are in a horizontal state; Figure 15 This is a schematic diagram of the second support plate in the vertical state in Embodiment 3; Figure 16 This is a schematic diagram of the first and second support plates in the fourth embodiment when both are in a horizontal state; Figure 17 This is a schematic diagram of the first support plate and the second support plate after adjusting to a certain angle in Embodiment 4.

[0019] Explanation of reference numerals in the attached drawings: 1. Main frame; 11. First adjusting ladder; 111. First support part; 12. Second adjusting ladder; 121. Second support part; 13. First pivot point; 14. Second pivot point; 15. Third pivot point; 16. First support pin; 17. Support column; 171. Outer tube; 172. Inner tube; 181. First support section; 182. Connecting section; 183. Second support section; 2. First support plate; 21. Positioning hole; 22. Recessed part; 3. Sliding sleeve; 31. Hollowed-out part; 311. Cavity; 32. Locking element; 33. Bushing; 34. Locking pin; 35. Sleeve; 3 51. Mounting hole; 36. Connector; 37. First abutment part; 38. Second abutment part; 39. Spring component; 4. Seat cushion; 5. Adjustable support component; 51. First support frame; 511. First support rod; 52. First arc-shaped bracket; 521. First support hole; 6. Second support plate; 7. Back pad; 8. Second support frame; 81. Second support rod; 9. Connection point; 91. Pivot connection point; 92. Fixed connection point; 101. First support foot; 102. Second support foot; 103. Third support foot; 104. Fourth support foot; 100. First support assembly; 200. Second support assembly. Detailed Implementation

[0020] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components. The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0021] Example 1: Reference Figure 1 and Figure 2 This embodiment provides an adjustable bench, including a main frame 1, a first support component 100, and a second support component 200. Both the first support component 100 and the second support component 200 are connected to the main frame 1. For ease of description, ... Figure 1 Describe the orientation of the adjustable bench in its normal use state.

[0022] Specifically, the first support assembly 100 includes a first support plate 2, a sliding sleeve 3, a seat cushion 4, an adjusting support member 5, and a locking member 32. The first support plate 2 is pivotally connected to the main frame 1, including a length direction extending horizontally along the adjustable bench and a width direction perpendicular to it, such as... Figure 2As shown, the length direction of the first support plate 2 is the X direction, and the width direction is the Y direction. An adjusting support 5 is connected to the first support plate 2 and has a connection point 9. The adjusting support 5 is used to support the first support plate 2 between the main support plate 2 and the main frame 1 to adjust the angle between the first support plate 2 and the horizontal plane. A sliding sleeve 3 is slidably fitted onto the outer circumference of the first support plate 2 along its length. A hollow portion 31 is provided on one side wall of the sliding sleeve 3 to accommodate the connection point 9. A locking member 32 is used to lock or unlock the relative positional relationship between the sliding sleeve 3 and the first support plate 2; a seat cushion 4 is fixedly connected to the sliding sleeve 3. The hollow portion 31 accommodates the connection point 9, allowing the maximum sliding stroke of the sliding sleeve 3 relative to the first support plate 2 to reach the maximum span of the hollow portion 31.

[0023] By fitting the sliding sleeve 3 onto the outer circumference of the first support plate 2, the entire first support plate 2 serves as the guide rail for the sliding sleeve 3. This ensures a stable connection between the sliding sleeve 3 and the first support plate 2 during sliding and allows for position adjustment of the seat cushion 4. The design features fewer parts, easier installation, and a simpler overall structure. Furthermore, the sliding sleeve 2 has a perforated section 31 that allows the connection point 9 to be positioned, enabling the maximum sliding stroke of the sliding sleeve 3 relative to the first support plate 2 to reach the maximum span of the perforated section 31. Simultaneously, the connection point 9 is located near the center of the first support plate 2 along its length, allowing the adjusting support member 5 to provide good support for the first support plate 2. This design fully utilizes the overall length of the first support plate 2, resulting in a more rational structural design.

[0024] Specifically, such as Figure 3 As shown, the hollowed-out portion 31 is a long strip-shaped hole structure opened along the length direction of the sliding sleeve 3 on one side wall of the sliding sleeve 3, with a length of L1, which is the maximum span of the hollowed-out portion 31, that is, the maximum sliding stroke of the sliding sleeve 3 relative to the first support plate 2 is L1. Each hollowed-out portion 31 corresponds to a connection point 9.

[0025] Specifically, such as Figure 1 and 2 As shown, the main frame 1 is provided with a plurality of first support parts 111 at intervals. The adjustable support 5 includes a first support frame 51, one end of which is pivotally connected to the first support plate 2 and has a pivot connection point 91, and the other end can be supported on any one of the first support parts 111 to realize the adjustable angle between the first support plate 2 and the horizontal plane.

[0026] In this embodiment, refer to Figure 2 , 45. Connection point 9 includes pivot connection point 91, which is located within the hollow portion 31. Two pivot connection points 91 are arranged at intervals along the pivot axis of the first support frame 51, respectively located at both ends of the width direction of the first support plate 2. Correspondingly, two hollow portions 31 are arranged at both ends of the width direction of the sliding sleeve 3. Arranging the pivot connection points 91 between the first support frame 51 and the first support plate 2 at both ends of the width direction of the first support plate 2 improves support stability. Furthermore, the sliding sleeve 3 also has a cavity 311 on its side wall. The cavity 311 has a rectangular hole structure and connects to the hollow portions 31 on both sides. The cavity 311 reduces the overall weight of the sliding sleeve 3 and provides sufficient space on the side wall for the installation of other components.

[0027] In this embodiment, the main frame 1 is provided with a first adjustable ladder 11, and the first adjustable ladder 11 is provided with slot structures at intervals, which serve as the first support parts 111. The first support frame 51 can be engaged in any of the first slots to adjust the angle between the first support plate 2 and the horizontal plane. A first support rod 511 is provided at one end of the first support frame 51 far from the pivot connection point 91. The first support rod 511 can be engaged in any of the first support parts 111, thereby adjusting the angle between the first support plate 2 and the horizontal plane. Specifically, two sets of first support parts 111 are arranged side by side, and the first support rod 511 can be engaged in the two first support parts 111 in the same row to ensure the support stability of the first support rod 511. The first support parts 111 at different positions of the first adjustable ladder 11 are provided with corresponding angle marks to facilitate the determination of the angle of the first support plate 2.

[0028] Furthermore, the first support plate 2 is approximately rectangular in shape on the projection plane. It should be noted that the first support plate 2 is approximately rectangular; that is, in its cross-section, it can be rectangular, elliptical, or an elliptical shape with a flattened center, etc. In the vertical projection of the first support plate 2, the long sides of the first support plate 2 are straight lines, while the wide sides can be straight lines, irregular curves, or arcs, etc. The sliding sleeve 3 is a hollow, approximately rectangular body adapted to the first support plate 2. The locking member 32 is used to lock or unlock the relative positional relationship between the sliding sleeve 3 and the first support plate 2. The seat cushion 4 is fixedly connected to the sliding sleeve 3. The first support plate 2 has an approximately rectangular frame structure, and the width of the first support plate 2 and / or the sliding sleeve 3 covers at least one-third of the width of the seat cushion 4, which can improve the stability of the seat cushion 4. In this embodiment, the width of the first support plate 2 covers at least one-third of the width of the seat cushion 4.

[0029] Reference Figure 6The sliding sleeve 3 has two sets of bushings 33 inside, which are arranged at both ends of the sliding sleeve 3 along the sliding direction of the sliding sleeve 3. Each set of bushings 33 has two bushings symmetrically arranged, and the bushings 33 have a U-shaped structure, respectively wrapping around both sides of the first support plate 2 in the width direction. Each bushing 33 has a notch that matches the first clearance groove 311. The bushings 33 are made of wear-resistant and smooth material and are fixedly installed on the inner wall of the sliding sleeve 3. The bushings 33 ensure smooth sliding of the sliding sleeve 3.

[0030] Reference Figure 2 , 6 7. The locking component 32 includes a locking pin 34. The sliding sleeve 3 has a mounting hole 351 on any one or any two width sides. The locking pin 34 is connected to the mounting hole 351. The first support plate 2 has a positioning hole 21 on any one or any two width sides. The locking pin 34 can be inserted into or removed from any positioning hole 21 to lock or unlock the positional relationship between the sliding sleeve 3 and the first support plate 2.

[0031] In this embodiment, a sleeve 35 is fixedly installed on one side wall of the sliding sleeve 3 in the width direction. The sleeve 35 has a mounting hole 351, and the locking pin 34 is installed through the sleeve 35, which can improve the stability of the locking pin 34. Positioning holes 21 are spaced apart along the length direction on one side wall of the first support plate 2 in the width direction. The locking pin 34 can be inserted into or removed from any of the positioning holes 21, thereby achieving locking or unlocking between the sliding sleeve 3 and the first support plate 2. Compared with the adjustment method in the prior art, which requires the use of a seat plate to connect bearings, forming a sliding relationship with two parallel guide rails through corresponding bearings, and having insertion holes for the pin on an adjustment frame independent of the guide rails, this embodiment directly opens holes on the first support plate 2, which serves as the guide rail, for the locking pin 34 to insert into. This reduces the number of parts, simplifies the structure, ensures stability, and makes installation more convenient. The prior art uses two parallel guide rails, and parallelism must be considered during installation, making the installation cumbersome.

[0032] To facilitate the operation of the locking pin 34, a spring 39 can also be provided in this embodiment. The locking pin 34 is slidably connected to the sleeve 35, and both ends extend out of the sleeve 35. A connector 36 is threaded onto the end of the locking pin 34 away from the sliding sleeve 3. The connector 36 is larger than the inner diameter of the sleeve 35. A first abutment portion 37 is provided on the locking pin 34, and a second abutment portion 38 is provided on the inner wall of the sleeve 35 away from the sliding sleeve 3. The spring 39 is sleeved on the locking pin 34, with one end abutting against the first abutment portion 37 and the other end abutting against the second abutment portion 38. The second abutment portion 38 can be formed by threading a nut onto the inner wall of the end of the sleeve 35. The end of the locking pin 34 away from the connector 36 can be inserted into the positioning hole 21 under the action of the spring 39 to lock the positional relationship between the sliding sleeve 3 and the first support plate 2.

[0033] Reference Figure 2 The second support assembly 200 includes a second support plate 6 and a back pad 7. The second support plate 6 is pivotally connected to the main frame 1, and the back pad 7 is fixedly connected to the second support plate 6. The second support assembly 200 also includes a second support frame 8. The main frame 1 is provided with a plurality of second support parts 121 at intervals. One end of the second support frame 8 is pivotally connected to the second support plate 6, and the other end can be supported on any of the second support parts 121 to adjust the angle between the second support plate 6 and the horizontal plane. Specifically, the main frame 1 is provided with a second adjusting ladder 12, and the second adjusting ladder 12 is provided with slot structures at intervals, which serve as second support parts 121. The other end of the second support frame 8 is provided with a second support rod 81. The second support rod 81 can be engaged in any of the second support parts 121, thereby adjusting the angle between the second support plate 6 and the horizontal plane. The second support parts 121 are arranged in two sets side by side, and the second support rod 81 can be engaged in two second support parts 121 in the same row to ensure the support stability of the second support rod 81. The second adjustable ladder 12 also has corresponding angle markings at the second support parts 121 at different positions to facilitate the determination of the angle of the second support plate 6.

[0034] Reference Figure 1 and Figure 2 The main frame 1 includes a first support section 181, a connecting section 182, and a second support section 183, which are fixedly connected in sequence. Both ends of the connecting section 182 are connected to the first support section 181 and the second support section 183, respectively, allowing the main frame 1 to be supported on a support surface via the first and second support sections 181 and 183. A first support assembly 100 and a second support assembly 200 are both connected to the connecting section 182. A first adjustable ladder 11 is arranged on the first support section 181, and a second adjustable ladder 12 is arranged on the second support section 183. A first pivot point 13 is provided on the connecting section 182. A first support plate 2 and a second support plate 6 are both connected to the first pivot point 13. This arrangement reduces the processing cost of the main frame 1 while also allowing for a certain range of angle adjustment between the first and second support plates 2 and 6.

[0035] The adjustable bench also includes a first support leg 101, a second support leg 102, a third support leg 103, and a fourth support leg 104. The plane containing the first support leg 101 and the second support leg 102 is substantially perpendicular to the plane containing the third support leg 103 and the fourth support leg 104. The adjustable bench has a usage state and a storage state; such as... Figure 2 and Figure 8As shown. When the adjustable bench is in use, the first support leg 101 and the second support leg 102 act on the support surface. When the adjustable bench is in storage, the third support leg 103 and the fourth support leg 104 act on the support surface. In this embodiment, the first support leg 101 and the second support leg 102 are respectively arranged at both ends of the bottom of the main frame 1. The third support leg 103 is arranged on the side of the main frame 1, and the main frame 1 is provided with a roller on the side wall adjacent to the second support leg 102. The roller has a protective cover, which serves as the third support leg 103. The fourth support leg 104 is arranged at the end of the second support plate 6 away from the first support plate 2. When the third support leg 103 and the fourth support leg 104 act on the support surface, there is a gap between the backrest pad 7 and the support surface, which can prevent the end of the backrest pad 7 from directly contacting the support surface and causing wear.

[0036] Reference Figure 2 The main frame 1 is also equipped with a height-adjustable support column 17. The first end of the support column 17 is fixedly connected to the main frame 1, and the second end can support the lower surface of the second support plate 6, thus supporting the second support plate 6. The support column 17 includes an inner tube 172 and an outer tube 171. The lower end of the outer tube 171 is fixed to the main frame 1 as the first end, and the inner tube 172 is vertically and vertically inserted into the outer tube 171, with the upper end of the inner tube 172 serving as the second end. A pin and socket method is used to lock or unlock the inner tube 172 and the outer tube 171. The adjustment mechanism can utilize the adjustment method of the sliding sleeve 3 and the first support plate 2. The support column 17 allows the second support plate 6 to be supported within a certain angle range, improving the stability of the second support plate 6.

[0037] Example 2: In this embodiment, the difference from Embodiment 1 is: Reference Figure 9 , 10 The support adjustment component 5 includes a first arc-shaped bracket 52. One end of the first arc-shaped bracket 52 is fixedly connected to the first support plate 2 and has a fixed connection point 92, while the other end is a free end. The center of the first arc-shaped bracket 52 is located on the pivot axis of the first support plate 2. First support holes 521 are spaced apart on the first arc-shaped bracket 52, and a first support pin 16 is provided on the main frame 1. The first support pin 16 can be inserted into any of the first support holes 521 to fix the first arc-shaped bracket 52, thereby realizing the angle adjustment of the first support plate 2. Figure 8 As shown, the first support plate 2 has an angle of 30° with the horizontal plane, and the second support plate 6 has an angle of 60° with the horizontal plane. Using the first arc-shaped bracket 52 to support and adjust the first support plate 2 results in a simpler overall structure compared to using the first support frame 51. The main frame 1 does not require an adjustment ladder structure, resulting in lower overall manufacturing costs.

[0038] Reference Figure 11-13 The fixed connection point 92 is located inside the hollow portion 31, along the sliding direction of the sliding sleeve 3. The fixed connection point 92 is arranged at the middle position in the width direction of the first support plate 2, so that the first arc-shaped bracket 52 can provide good support for the first support plate 2. Correspondingly, the hollow portion 31 is arranged at the middle position in the width direction of the sliding sleeve 3, with a length of L2.

[0039] Reference Figure 13 In this embodiment, the sliding sleeve 3 can have hollowed-out portions 31 at both ends of its width direction and at the middle position of its width direction. In this way, the same sliding sleeve 3 can be used for different support adjustment components 5, thereby improving the applicability of the sliding sleeve 3. In addition, the sliding sleeve 3 is also provided with a cavity 311. The cavity 311 has a rectangular hole structure that connects all the hollowed-out portions 31. By providing the cavity 311, the weight of the sliding sleeve 3 can be reduced, and the sliding sleeve 3 can also have sufficient space to facilitate the installation of other components.

[0040] In other embodiments, the second support frame 8 in the second support assembly 200 can also be replaced by a second arc-shaped bracket. The connection principle between the second arc-shaped bracket and the main frame 1 is the same as that of the first arc-shaped bracket 52. One end of the second arc-shaped bracket is fixedly connected to the second support plate 6. The second arc-shaped bracket is provided with second support holes at intervals. The main frame 1 is provided with second support pins. The second support pins can be inserted into any of the second support holes to adjust the angle between the back plate and the horizontal plane.

[0041] Example 3: In this embodiment, the difference from Embodiment 1 is: Reference Figure 14 and 15 The first support plate 2 and the second support plate 6 are also pivotally connected to the first pivot point 13, but the first support plate 2 is provided with a recess 22. The first support plate 2 is configured such that when the second support plate 6 is in a vertical state and the first support plate 2 is in a horizontal state, the back pad 7 partially falls into the recess 22. By providing the recess 22, the back pad 7 can be accommodated, thereby enabling more angle combinations between the first support plate 2 and the second support plate 6.

[0042] Furthermore, the fourth support leg 104 is disposed on the side wall of the second end of the support column 17. The backrest cushion 7 is configured such that when the third support leg 103 and the fourth support leg 104 act on the support surface, there is a gap between the end face of the backrest cushion 7 and the support surface, which can prevent the end of the backrest cushion 7 from directly contacting the support surface and causing wear.

[0043] Example 4: In this embodiment, the difference from Embodiment 3 is: Reference Figure 16 and 17The main frame 1 has a second pivot point 14 and a third pivot point 15 spaced apart. The distance between the second pivot point 14 and the third pivot point 15 forms a clearance zone. The first support plate 2 is connected to the second pivot point 14, and the second support plate 6 is connected to the third pivot point 15. By setting the clearance zone, interference between the seat cushion 4 and the back cushion 7 is reduced during angle adjustments of the first support plate 2 and the second support plate 6, allowing for more angle combinations to meet the needs of various fitness movements. As shown in the figure, the angle between the first support plate 2 and the horizontal plane is 45°, and the angle between the second support plate 6 and the horizontal plane is also 45°. Furthermore, the two independent pivot points relatively increase the support strength.

[0044] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. An adjustable bench, comprising a main frame, a first support component, and a second support component, wherein the first support component and the second support component are both connected to the main frame; characterized in that, The first support component includes: A first support plate, pivotally connected to the main frame, includes a length direction extending horizontally along the adjustable bench and a width direction perpendicular to it. An adjusting support member is connected to a first support plate and has a connection point. The adjusting support member is used to support between the first support plate and the main frame to adjust the angle between the first support plate and the horizontal plane. A sliding sleeve is slidably fitted onto the outer circumferential surface of the first support plate along its length; the sliding sleeve is provided with a hollow portion that allows the connection point to be accommodated. A locking element, which is used to lock or unlock the relative positional relationship between the sliding sleeve and the first support plate; and a seat cushion, which is fixedly connected to the sliding sleeve; Specifically, by allowing the connection point to be recessed by the hollowed-out portion, the maximum sliding stroke of the sliding sleeve relative to the first support plate can reach the maximum span of the hollowed-out portion.

2. An adjustable bench according to claim 1, characterized in that: The main frame is provided with a plurality of first support parts at intervals; the adjustable support includes a first support frame, one end of the first support frame is pivotally connected to a first support plate and has a pivot connection point, the connection point includes the pivot connection point, and the other end of the first support frame can be supported on any one of the first support parts; the pivot connection point is located in the hollow part.

3. An adjustable bench according to claim 2, characterized in that: The main frame is provided with a first adjustable ladder, and the first adjustable ladder is provided with slot structures at intervals. The slot structures serve as the first support parts, and the first support frame can be locked onto any of the first support parts to adjust the angle between the first support plate and the horizontal plane.

4. An adjustable bench according to claim 2, characterized in that: Two pivot connection points are arranged at intervals along the pivot axis of both, and are respectively arranged at both ends of the width direction of the first support plate. Two hollow parts are arranged accordingly, and are respectively arranged at both ends of the width direction of the sliding sleeve.

5. An adjustable bench according to claim 1, characterized in that: The adjusting support includes a first arc-shaped bracket, one end of which is fixedly connected to a first support plate and has a fixed connection point. The connection point includes the fixed connection point. The first arc-shaped bracket is provided with first support holes spaced apart. The main frame is provided with a first support pin. The first support pin can be inserted into any of the first support holes to fix the first arc-shaped bracket. The fixed connection point is located inside the hollow part.

6. An adjustable bench according to claim 5, characterized in that: The fixed connection point between the first arc-shaped bracket and the first support plate is arranged at the middle position in the width direction of the first support plate, and the hollow part is correspondingly arranged at the middle position in the width direction of the sliding sleeve.

7. An adjustable bench according to claim 1, characterized in that: The first support plate is generally rectangular in shape on the projection plane, and the sliding sleeve is a generally rectangular body that is hollow inside and adapted to the first support plate. The width of the first support plate and / or the sliding sleeve covers at least one-third of the width of the seat cushion.

8. An adjustable bench according to claim 1, characterized in that: The sliding sleeve has two sets of bushings spaced apart at both ends along the sliding direction of the sliding sleeve. The bushings are U-shaped, and there are two bushings symmetrically arranged in each set, which respectively wrap around the two sides of the width direction of the first support plate.

9. An adjustable bench according to claim 1, characterized in that: The locking component includes a locking pin. The sliding sleeve has a mounting hole on one or both of its width sides. The locking pin is connected to the mounting hole. The first support plate has a positioning hole on one or both of its width sides. The locking pin can be inserted into or removed from any positioning hole to lock or unlock the positional relationship between the sliding sleeve and the first support plate.

10. An adjustable bench according to claim 1, characterized in that: The second support assembly includes a second support plate, a back pad, and a second support frame; the second support plate is pivotally connected to the main frame; the back pad is fixedly connected to the second support plate; the main frame is provided with a plurality of second support parts at intervals; one end of the second support frame is pivotally connected to the second support plate, and the other end can be supported on any of the second support parts to adjust the angle between the second support plate and the horizontal plane; And / or, the second support assembly includes a second support plate and a back pad, the second support plate being pivotally connected to the main frame, and the back pad being fixedly connected to the second support plate; the main frame is provided with a first pivot point, and both the first support plate and the second support plate are connected to the first pivot point; And / or, the second support assembly includes a second support plate and a back pad, the second support plate being pivotally connected to the main frame, and the back pad being fixedly connected to the second support plate; the main frame is provided with a first pivot point, and both the first support plate and the second support plate are connected to the first pivot point; the first support plate is provided with a recess, and the first support plate is configured such that when the second support plate is in a vertical state, the back pad portion falls into the recess; And / or, the second support assembly includes a second support plate and a back pad, the second support plate being pivotally connected to the main frame, and the back pad being connected to the second support plate; the main frame is provided with a second pivot point and a third pivot point at intervals, such that the distance between the second pivot point and the third pivot point forms a clearance zone, the first support plate being connected to the second pivot point, and the second support plate being connected to the third pivot point; And / or, the main frame includes a first support segment, a connecting segment, and a second support segment that are fixedly connected in sequence. One end of the first support segment can be supported on a support surface, and the other end is fixedly connected to the connecting segment. One end of the second support segment can be supported on a support surface, and the other end is fixedly connected to the connecting segment. Both the first support component and the second support component are connected to the connecting segment. And / or, the adjustable bench further includes a first support leg, a second support leg, a third support leg, and a fourth support leg, wherein the plane containing the first support leg and the second support leg is perpendicular to the plane containing the third support leg and the fourth support leg; the adjustable bench has a use state and a storage state; when the adjustable bench is in the use state, the first support leg and the second support leg act on the support surface; when the adjustable bench is in the storage state, the third support leg and the fourth support leg act on the support surface.

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