CN218961678U - Dumbbell bench - Google Patents

Abstract

The utility model discloses a dumbbell bench, which comprises a back cushion and a seat cushion, wherein the back cushion is fixed on a back cushion group, and the seat cushion is fixed on the seat cushion group; a slide way pipe is arranged on the back cushion group, and a sliding sleeve group which can slide along the slide way pipe and is fixed is arranged below the slide way pipe; the dumbbell bench also comprises a back cushion supporting group, a seat cushion supporting group, a foot hook group, a rear supporting group and a front supporting group; the upper end of the rear supporting group is rotatably connected to the back cushion group, the upper end of the front supporting group is rotatably connected to the seat cushion group, and the upper end of the rear supporting group is rotatably connected with the upper end of the front supporting group and can fix the rotating position; one end of the back cushion supporting group is rotatably connected to the sliding sleeve group, and the other end of the back cushion supporting group is rotatably connected to the rear supporting group; one end of the seat cushion supporting group is rotatably connected to the seat cushion group, and the other end of the seat cushion supporting group is rotatably connected to the front supporting group; the foot hook group is rotatably connected with the front support group and can fix the rotation position. The folding type folding device is simple in structure, convenient to use and small in length and size after folding.

Description

Dumbbell bench

Technical Field

The utility model relates to fitness equipment, in particular to a dumbbell bench.

Background

The dumbbell stool structure in the market at present is divided into three types, one type is a fixed type bench, and only can lie or do movement in a lying way, so that the dumbbell stool has a single function; one is a dumbbell bench with an adjustable back cushion or seat cushion angle, but the main support structure is fixed, and the dumbbell bench can only be disassembled into parts for carrying or carrying, thus being labor-consuming and labor-consuming; still another is a folding dumbbell bench with the seat cushion and back cushion mounted on the rear support set, folded just the front support set, and the folded length has limited variation.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the dumbbell bench which is convenient to use and can realize multi-angle adjustment of a seat cushion and a back cushion.

The utility model discloses a dumbbell bench, which comprises a back cushion and a seat cushion, wherein the back cushion is fixed on a back cushion group, and the seat cushion is fixed on the seat cushion group; a slide way pipe is arranged on the back cushion group, and a sliding sleeve group which can slide along the slide way pipe and is fixed is arranged below the slide way pipe; the dumbbell bench also comprises a back cushion supporting group, a telescopic seat cushion supporting group, a foot hook group, a rear supporting group and a front supporting group; the upper end of the rear support group is rotatably connected to the back cushion group, the upper end of the front support group is rotatably connected to the seat cushion group, and the upper end of the rear support group and the upper end of the front support group are rotatably connected and can fix the unfolding position; one end of the back cushion supporting group is rotatably connected to the sliding sleeve group, and the other end of the back cushion supporting group is rotatably connected to the rear supporting group; one end of the seat cushion supporting group is rotatably connected to the seat cushion group, and the other end of the seat cushion supporting group is rotatably connected to the front supporting group; the foot hook group is rotatably connected with the front support group and can fix the rotation position.

Further, the front support group comprises a front support rod, front support legs are transversely arranged at the bottom end of the front support rod, a front support group hinge frame is fixedly arranged at the upper end of the front support rod, the front support group is rotatably connected with the seat cushion group through the front support group hinge frame, and the rotatably connected position is close to one end of the back cushion group.

Further, the front support rod is further provided with a seat cushion support group hinge frame, the seat cushion support group comprises an inner tube and an outer tube sleeved outside the inner tube, the upper end of the inner tube is rotatably connected with the seat cushion group, the lower end of the outer tube is rotatably connected to the seat cushion support group hinge frame, the inner tube and the outer tube are fixed in relative positions by telescopic positioning pull pins, and adjustment of the telescopic length of the seat cushion support group is achieved.

Further, the front support rod is further provided with a foot hook group hinge frame, the foot hook group comprises a connecting rod, one end of the connecting rod is transversely provided with a foot hook part, the other end of the connecting rod is provided with a foot hook group fixing bolt and a through hole which is rotatably connected to the foot hook group hinge frame, the foot hook group hinge frame is further provided with a plurality of foot hook group adjusting holes, and the connecting rod is fixedly spliced with the corresponding foot hook group adjusting holes by the foot hook group fixing bolt.

Further, the slide pipe is a hollow pipe, a row of fixing holes are formed in the upper side of the slide pipe, and a sliding groove is formed in the lower side of the slide pipe.

The sliding sleeve group further comprises a sliding sleeve group main body and a fixed shaft arranged on the upper side of the sliding sleeve group main body; the sliding sleeve group also comprises a clamping shaft which can rebound in the fixed shaft, the bottom of the clamping shaft is fixed with a sliding sleeve positioning pull pin, and the lower part of the sliding sleeve positioning pull pin extends out of the sliding sleeve group main body; a fixed sliding sleeve plate is sleeved at the lower part of the fixed shaft, a fixed clamping piece and a clamping nut are sleeved on the fixed shaft in sequence, and the clamping piece is fixedly connected with the clamping nut; the sliding sleeve plate is positioned at the lower side of the sliding channel pipe, and the clamping piece and the clamping nut are positioned in the sliding channel pipe; the clamping piece and the sliding sleeve plate clamp the side edge of the sliding chute.

Further, a sliding sleeve group hinge bracket is arranged below the sliding sleeve plate, and one end of the back cushion support group is rotatably connected with the sliding sleeve group hinge bracket.

Further, the rear supporting group comprises a rear supporting rod, the bottom end of the rear supporting rod is transversely provided with rear supporting feet, the upper end of the rear supporting rod is provided with two through holes and is fixedly provided with a back cushion supporting group hinge frame, the rear supporting group is rotatably connected with the back cushion group through the back cushion supporting group hinge frame, and the position of rotatable connection is near one end of the seat cushion group; the front support group hinge frame is provided with through holes corresponding to the two through holes on the rear support rod, and the through holes are respectively used for the rotatable connection between the rear support rod and the front support rod and the fixation of the rotation position; the back support rod is also provided with a back support group hinge frame, and the back pad support group is rotatably connected with the back support rod through the back support group hinge frame.

Further, the dumbbell bench further comprises a fixing piece, one end of the fixing piece is rotatably connected to one side of the back cushion group, and the other end of the fixing piece can be fixed to one side of the seat cushion group.

Further, the dumbbell bench also comprises a handle which is fixed on one side of the back pad group.

The beneficial effects of the utility model are as follows: the seat cushion has the advantages that the structure is simple, the use is convenient, the seat cushion group and the back cushion group can be adjusted at multiple angles, the sitting posture, the upward inclination, the lying posture and the downward inclination are combined for exercise, the seat cushion group and the back cushion group can be folded face to be parallel, the folded length and the folded volume are further reduced, and the seat cushion is more beneficial to collection and carrying.

Drawings

FIG. 1 is a schematic side view of the present utility model;

FIG. 2 is a schematic view of the structure of FIG. 1 in the direction A-A;

FIG. 3 is a schematic diagram of an explosive structure according to the present utility model;

FIG. 4 is a schematic view of a partially exploded construction of the present utility model;

FIG. 5 is a schematic top view of the present utility model with the back pad removed;

FIG. 6 is a schematic view of an angle adjustment of a back pad set according to the present utility model;

FIG. 7 is an enlarged schematic view of the structure of the sliding sleeve set after the clamping sheets are separated;

FIG. 8 is an enlarged schematic view of the sleeved fastening plate of the sliding sleeve set of the present utility model;

FIG. 9 is an enlarged schematic view of the connection of the sliding sleeve set and the slideway tube;

FIG. 10 is an enlarged schematic view of the hinge bracket of the leg hook assembly of the present utility model;

fig. 11 is a schematic view of the folded structure of the present utility model.

Reference numerals in the drawings: 1-a back pad; 2-back pad groups; 3-a back pad support group; 3.1-1# bolt shaft; 4, a seat cushion; 5-seat cushion group; 6-a seat cushion support group; 6.1-an inner tube; 6.2-an outer tube; 6.3-2# bolt shaft; 6.4-telescoping positioning pull pins; 6.5-3# bolt shaft; 6.6-deadbolt; 6.7-positioning holes; 7-a slideway tube; 7.1-fixing holes; 7.2-sliding grooves; 8-a rear support group; 8.1-a rear supporting rod; 8.2-rear support legs; 8.3-a back cushion support group hinge frame; 8.4-a rear support group hinge bracket; 8.5-4# bolt shaft; 8.6-5# bolt shaft; 8.7-rear support group connection holes; 8.8-fixing holes of the rear support group; 9-a front support group; 9.1-front support bar; 9.2-front support feet; 9.3-hinging frame of the foot hook group; 9.31-foot hook mounting holes; 9.32-foot hook group adjusting holes; 9.4-a seat cushion support group hinge bracket; 9.5-front support group hinge brackets; 9.51-front support group connection holes; 9.52-front support group fixation holes; 10-foot hook group; 10.1-foot hook portion; 10.2-connecting rod; 10.3-fixing the bolt by the foot hook group; 10.4-4# bolt shaft; 11-a handle; 12-fixing sheets; 13-sliding sleeve groups; 13.0-a sliding sleeve group body; 13.1-a sliding sleeve group hinge bracket; 13.2-sliding sleeve positioning pull pins; 13.3-slip-on plate; 13.4-clamping and fixing pieces; 13.5-clamping nuts; 13.6-a fixed shaft; 13.7-clamping the shaft.

Detailed Description

The utility model is further explained below with reference to examples. The following examples are only illustrative of the present utility model and are not intended to limit the scope of the utility model.

Example 1

For convenience of description, the upper and lower positions of the parts are determined according to the relative upper and lower positions of the parts in the horizontal lying position, and the bolt shafts are distinguished by 1# and 2# … … for convenience of description only, and have no special meaning, and the bolt shafts with the same specification can be mixed.

The overall appearance diagram of the dumbbell bench in the lying position is shown in fig. 1, fig. 2 is a schematic structural diagram in A-A direction of fig. 1, and mainly comprises a back cushion 1 and a seat cushion 4, wherein the back cushion 1 is fixed on a back cushion group 2 through bolts, and the seat cushion 4 is fixed on a seat cushion group 5 through bolts; a slide way pipe 7 is arranged on the back cushion group 2, and a sliding sleeve group 13 which can slide along the slide way pipe 7 and is fixed is arranged below the slide way pipe 7; the dumbbell bench also comprises a back cushion supporting group 3, a seat cushion supporting group 6, a foot hook group 10, a rear supporting group 8 and a front supporting group 9. One end of the back cushion supporting group 3 is connected with the sliding sleeve group 13, and the other end is connected with the rear supporting group 8; the seat cushion supporting group 6 is of a telescopic structure, one end of the seat cushion supporting group is connected with the seat cushion group 5, the other end of the seat cushion supporting group is connected with the front supporting group 9, and the foot hook group 10 is connected to the front supporting group 9. A rear support group 8 and a front support group 9.

The specific components are shown in the exploded view of fig. 3.

The back cushion group 2 and the seat cushion group 5 are ladder-shaped structures and comprise two long rods, and short rods are connected between the long rods. The slideway tube 7 is arranged between the two long rods of the back cushion group 2. The slide pipe 7 is of a hollow tubular structure, a row of fixing holes 7.1 are formed in the upper side of the slide pipe, and a slide groove 7.2 is formed in the lower side of the slide pipe.

The front support group 9 comprises a front support rod 9.1, a front support leg 9.2 is transversely arranged at the bottom end of the front support rod 9.1 (namely, in the vertical direction with the front support rod 9.1), a front support group hinge frame 9.5 is fixedly arranged at the upper end (the end which is relatively positioned at the upper end when the dumbbell stool is completely unfolded), the front support group hinge frame 9.5 is of a symmetrical T-shaped sheet structure, the vertical edges of the T-shaped sheet structure are fixed at the two sides of the upper end of the front support rod 9.1, one end of the T-shaped transverse edge is rotatably fixed at the inner side of a long rod of the seat cushion group 5 through a bolt with a nut, and the fixed position is close to one end of the back cushion group 2. A front support group fixing hole 9.52 and a front support group connecting hole 9.51 are sequentially arranged at the position of the other end of the T-shaped transverse edge.

The front support rod 9.1 is also provided with a seat cushion support group hinge bracket 9.4 and a foot hook group hinge bracket 9.3, and the foot hook group hinge bracket 9.3 is positioned below the seat cushion support group hinge bracket 9.4.

The seat cushion supporting group 6 is telescopic and comprises an inner pipe 6.1 and an outer pipe 6.2 sleeved outside the inner pipe 6.1, a plurality of positioning holes 6.7 are formed in the inner pipe 6.1, and the upper end of the inner pipe 6.1 is rotatably connected with the seat cushion group 5 through a 3# bolt shaft 6.5. The outer tube 6.2 is provided with a telescopic positioning pull pin 6.4, and the telescopic length of the seat cushion supporting group 6 is adjusted by inserting and fixing the telescopic positioning pull pin 6.4 into different positioning holes 6.7. The bottom of the outer tube 6.2 is rotatably connected with the seat cushion supporting group hinge bracket 9.4 through a 2# bolt shaft 6.3.

The pin hook group 10 comprises a connecting rod 10.2, one end of the connecting rod 10.2 is transversely provided with a pin hook part 10.1, and the other end is provided with two through holes which are respectively connected to the pin hook group hinge frame 9.3 in a rotatable manner, and a pin hook group fixing bolt 10.3.

The pin hook set hinge frame 9.3 is shown in fig. 10, and two sides of the U-shaped structure are provided with a pin hook set mounting hole 9.31 and a plurality of (three in the utility model, can be specifically confirmed according to the required angle adjustment of the pin hook set 10) pin hook set adjusting holes 9.32. The through holes used for rotatable connection on the connecting rod 10.2 are rotatably connected with the foot hook group mounting holes 9.31 through the 4# bolt shaft 10.4, and the foot hook group fixing bolts 10.3 can fix the connecting rod 10.2 with the plurality of foot hook group adjusting holes 9.32 one by one, so that the lifting angle of the foot hook group 10 is adjusted. The foot hook group adjusting hole 9.32 is arranged at a position which takes the foot hook group mounting hole 9.31 as a center, and the foot hook group 10 rotates around the foot hook group mounting hole 9.31 when adjusting the angle.

The sliding sleeve group 13 is shown in fig. 7 and 8, and comprises a sliding sleeve group main body 13.0 and a fixed shaft 13.6 arranged on the upper side of the sliding sleeve group main body 13.0, wherein the fixed shaft 13.6 is a hollow stud. The sliding sleeve group 13 also comprises a clamping shaft 13.7 sleeved in the fixed shaft 13.6, the top of the clamping shaft 13.7 can be clamped into the fixed hole 7.1, the bottom of the clamping shaft 13.7 is fixed with the sliding sleeve positioning pull pin 13.2, and the lower part of the sliding sleeve positioning pull pin 13.2 extends out of the sliding sleeve group main body 13.0; pulling the sliding sleeve positioning pull pin 13.2 can drive the clamping shaft 13.7 to downwards, and releasing the sliding sleeve positioning pull pin 13.2 is rebound, so that the sliding sleeve positioning pull pin is made of a general standard structure in the market.

The fixed shaft 13.6 is sleeved with an inherent sliding sleeve plate 13.3, the fixed shaft 13.6 is also sleeved with an inherent clamping piece 13.4 and a clamping nut 13.5 in sequence, and the clamping piece 13.4 is fixedly connected (such as welded) with the clamping nut 13.5. The sliding sleeve plate 13.3 is positioned at the lower side of the slideway tube 7, the shape of the sliding sleeve plate is matched with the shape of the lower side surface of the slideway tube 7, and the sliding sleeve plate is attached to the outer side of the lower side surface of the slideway tube 7; the clamping piece 13.4 and the clamping nut 13.5 are positioned inside the slideway tube 7, the shape of the clamping piece is matched with the shape of the lower side surface of the slideway tube 7, and the clamping piece is attached to the inner side of the lower side surface of the slideway tube 7. The side edges of the chute 7.2 are clamped between the clamping piece 13.4 and the sliding sleeve plate 13.3.

A sliding sleeve group hinge bracket 13.1 is arranged below the sliding sleeve plate 13.3. The back support group 8 comprises a back support rod 8.1, a back support foot 8.2 is transversely arranged at the bottom end of the back support rod 8.1 (in the direction perpendicular to the back support rod 8.1), two through holes are formed in the upper end of the back support rod, the back support group is respectively provided with a back support group connecting hole 8.7 and a back support group fixing hole 8.8, the upper end of the back support rod 8.1 is fixedly provided with a back cushion support group hinge bracket 8.3, the back cushion support group hinge bracket 8.3 is of a U-shaped structure, two U-shaped vertical edges are fixed on the inner sides of two long edges of the back cushion group 2 through bolts with nuts, the back support group 8.1 and the back cushion group 2 are rotatably connected, and the rotatably connected position is close to one end of the seat cushion group 5. The front support group fixing holes 9.52 and the front support group connecting holes 9.51 are connected through the 5# bolt shafts 8.6 between the support group connecting holes 8.7 and the front support group connecting holes 9.51 so that rotatable connection is formed between the rear support rods 8.1 and the front support rods 9.1; the rear support group fixing holes 8.8 and the front support group fixing holes 9.52 are connected through bolts 6.6, so that the positions of the rear support rods 8.1 and the front support rods 9.1 are fixed.

The rear support rod 8.1 is also provided with a rear support group hinge bracket 8.4, and one end of the back cushion support group 3 is connected with the sliding sleeve group hinge bracket 13.1 through a 1# bolt shaft 3.1, so that the back cushion support rod 3 and the sliding sleeve group 13 are rotatably connected; the other end is connected with the back support group hinge frame 8.4 through a 4# bolt shaft 8.5, so that the back cushion support group 3 and the back support rod 8.1 are rotatably connected.

The dumbbell bench further comprises a fixing piece 12, one end of the fixing piece 12 is rotatably connected to one side of the back cushion set 2, and the other end is fixed to one side of the seat cushion set 5.

In order to facilitate the movement of the dumbbell stool, one side of the back pad group 2 is also provided with the dumbbell stool which also comprises a handle 11, and the handle 11 is fixed at one side of the back pad group 2.

Pulling the sliding sleeve positioning pull pin 13.2 of the sliding sleeve group 13 outwards, lifting the back cushion 1 or pressing the back cushion 1, and lifting the back cushion 1 or pressing the back cushion 1 can enable the sliding sleeve group 13 to slide along the sliding groove 7.2 of the sliding channel pipe 7 because the clamping shaft 13.7 can be downwards separated from the fixing hole 7.1 by pulling the sliding sleeve positioning pull pin 13.2 of the sliding sleeve group 13; when the sliding sleeve positioning pull pin 13.2 is released, the sliding sleeve positioning pull pin 13.2 rebounds, the clamping shaft 13.7 is clamped into the corresponding fixing hole 7.1 of the slide way pipe 7, and the angle adjustment of the back pad 1 is completed. Fig. 6 shows a schematic view of different upward inclination angles formed by lifting the back pad 1, and downward inclination angles can be formed by pressing the back pad 1.

The telescopic positioning pull pin 6.4 is pulled outwards, the seat cushion 4 is lifted or the seat cushion 4 is pressed, and the inner tube 6.1 and the outer tube 6.2 of the seat cushion support group 6 slide relatively, so that the telescopic is formed; and the telescopic positioning pull pin 6.4 is released, the telescopic positioning pull pin 6.4 can spring into the corresponding positioning hole 6.7 and is fixed, and then the angle adjustment of the seat cushion 4 is completed.

Pulling the pin hook set fixing bolt 10.3 outwards to push the pin hook set 10, so that the pin hook set 10 rotates around the 4# bolt shaft 10.4; the pin hook set fixing bolt 10.3 is released, and the pin hook set fixing bolt 10.3 can be sprung into the corresponding pin hook set adjusting hole 9.32 to fix, thus completing the angle adjustment of the pin hook set 10.

The angles of the back cushion 1 and the foot hook group 10 can meet different dumbbell training requirements.

When the back cushion 1, the seat cushion 4 and the foot hook group 10 are pressed to be fully folded, and the latch lock 6.6 is pulled up, the back cushion 1 and the seat cushion 4 are pressed oppositely, and the back cushion can be further folded to be parallel, as shown in fig. 11. After the seat cushion is completely folded, the fixing piece 12 is rotated, and the movable end of the fixing piece is fixed on one side of the seat cushion group 5 through the fixing bolt.

Claims (10)

1. The dumbbell bench comprises a back cushion (1) and a seat cushion (4), and is characterized in that: the back cushion (1) is fixed on the back cushion group (2), and the seat cushion (4) is fixed on the seat cushion group (5); a slide way pipe (7) is arranged on the back cushion group (2), and a sliding sleeve group (13) which can slide along the slide way pipe (7) and is fixed is arranged below the slide way pipe (7); the dumbbell bench also comprises a back cushion supporting group (3), a telescopic seat cushion supporting group (6), a foot hook group (10), a rear supporting group (8) and a front supporting group (9); the upper end of the rear support group (8) is rotatably connected to the back cushion group (2), the upper end of the front support group (9) is rotatably connected to the seat cushion group (5), and the upper end of the rear support group (8) and the upper end of the front support group (9) are rotatably connected and can fix the unfolding position; one end of the back cushion supporting group (3) is rotatably connected to the sliding sleeve group (13), and the other end of the back cushion supporting group is rotatably connected to the rear supporting group (8); one end of the seat cushion supporting group (6) is rotatably connected to the seat cushion group (5), and the other end is rotatably connected to the front supporting group (9); the foot hook group (10) is rotatably connected with the front support group (9) and can fix the rotation position.

2. The dumbbell bench of claim 1, wherein: the front support group (9) comprises a front support rod (9.1), front support legs (9.2) are transversely arranged at the bottom end of the front support rod (9.1), a front support group hinge bracket (9.5) is fixedly arranged at the upper end of the front support group, the front support group (9) is rotatably connected with the seat cushion group (5) through the front support group hinge bracket (9.5), and the rotatably connected position is close to one end of the back cushion group (2).

3. The dumbbell bench of claim 2, wherein: the seat cushion support device is characterized in that a seat cushion support group hinge bracket (9.4) is further arranged on the front support rod (9.1), the seat cushion support group (6) comprises an inner tube (6.1) and an outer tube (6.2) sleeved outside the inner tube (6.1), the upper end of the inner tube (6.1) is rotatably connected with the seat cushion group (5), the lower end of the outer tube (6.2) is rotatably connected to the seat cushion support group hinge bracket (9.4), and the inner tube (6.1) and the outer tube (6.2) are fixed in relative positions by a telescopic positioning pull pin (6.4).

4. The dumbbell bench of claim 2, wherein: the front support rod (9.1) is further provided with a foot hook group hinge bracket (9.3), the foot hook group (10) comprises a connecting rod (10.2), one end of the connecting rod (10.2) is transversely provided with a foot hook part (10.1), the other end of the connecting rod is provided with a foot hook group fixing bolt (10.3) and a through hole which is rotatably connected to the foot hook group hinge bracket (9.3), the foot hook group hinge bracket (9.3) is further provided with a plurality of foot hook group adjusting holes (9.32), and the foot hook group fixing bolt (10.3) is used for fixedly inserting the connecting rod (10.2) into the corresponding foot hook group adjusting holes (9.32).

5. The dumbbell bench of claim 1, wherein: the slide pipe (7) is a hollow pipe, a row of fixing holes (7.1) are formed in the upper side of the slide pipe, and a sliding groove (7.2) is formed in the lower side of the slide pipe.

6. The dumbbell bench according to claim 5, wherein: the sliding sleeve group (13) comprises a sliding sleeve group main body (13.0) and a fixed shaft (13.6) arranged on the upper side of the sliding sleeve group main body (13.0); the sliding sleeve group (13) further comprises a clamping shaft (13.7) which can rebound in the fixed shaft (13.6), the bottom of the clamping shaft (13.7) is fixed with a sliding sleeve positioning pull pin (13.2), and the lower part of the sliding sleeve positioning pull pin (13.2) extends out of the sliding sleeve group main body (13.0); an inherent sliding sleeve plate (13.3) is sleeved at the lower part of a fixed shaft (13.6), an inherent clamping piece (13.4) and a clamping nut (13.5) are sleeved on the fixed shaft (13.6) in sequence, and the clamping piece (13.4) is fixedly connected with the clamping nut (13.5); the sliding sleeve plate (13.3) is positioned at the lower side of the sliding channel pipe (7), and the clamping piece (13.4) and the clamping nut (13.5) are positioned in the sliding channel pipe (7); the clamping piece (13.4) and the sliding sleeve plate (13.3) clamp the side edge of the sliding chute (7.2).

7. The dumbbell bench of claim 6, wherein: a sliding sleeve group hinge bracket (13.1) is arranged below the sliding sleeve plate (13.3), and one end of the back cushion support group (3) is rotatably connected with the sliding sleeve group hinge bracket (13.1).

8. The dumbbell bench of claim 2, wherein: the rear support group (8) comprises a rear support rod (8.1), rear support legs (8.2) are transversely arranged at the bottom end of the rear support rod (8.1), two through holes are formed in the upper end of the rear support rod, a back cushion support group hinge frame (8.3) is fixedly arranged at the upper end of the rear support rod, the rear support group (8) is rotatably connected with the back cushion group (2) through the back cushion support group hinge frame (8.3), and the rotatably connected position is close to one end of the seat cushion group (5); the front support group hinge frame (9.5) is provided with through holes corresponding to the two through holes on the rear support rod (8.1) and used for rotatably connecting the rear support rod (8.1) and the front support rod (9.1) and fixing the rotating position; the rear support rod (8.1) is also provided with a rear support group hinge bracket (8.4), and the back cushion support group (3) is rotatably connected with the rear support rod (8.1) through the rear support group hinge bracket (8.4).

9. The dumbbell bench of claim 1, wherein: the dumbbell bench also comprises a fixing piece (12), one end of the fixing piece (12) is rotatably connected to one side of the back cushion group (2), and the other end of the fixing piece is fixed to one side of the seat cushion group (5).

10. The dumbbell bench of claim 1, wherein: the dumbbell bench also comprises a hand handle (11), and the hand handle (11) is fixed on one side of the back pad group (2).

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