Dumbbell stool

Abstract

A dumbbell stool comprises a support and a back cushion assembly and a seat cushion assembly which are arranged on the support, and is characterized in that the seat cushion assembly comprises a seat cushion and a mounting frame, the mounting frame comprises a mounting base, a front supporting arm, a rear supporting arm, a front plug pin, a rear plug pin and a limiting plug pin, and the seat cushion is fixedly arranged on the mounting base; the front supporting arm is provided with a plurality of front bolt holes used for being connected with the support, the support is provided with first bolt holes opposite to the front bolt holes, the rear supporting arm is provided with a plurality of rear bolt holes used for being connected with the support, and the support is provided with second bolt holes opposite to the rear bolt holes. The front plug pin penetrates through a certain front plug pin hole and the first plug pin hole at the same time, the rear plug pin penetrates through a certain rear plug pin hole and the second plug pin hole at the same time, the installation base is further provided with a plurality of limiting pin holes, and the multiple different plug pin holes in the installation frame can be matched with the corresponding plug pins, so that the cushion assembly can be adjusted at different angles and positions; therefore, the requirements of different exercise actions can be met.

Description

Technical Field

[0001] The utility model relates to fitness equipment, in particular to a dumbbell bench. Background Art

[0002] As we all know, dumbbell bench is a kind of fitness auxiliary equipment. It is often used to assist dumbbells to complete some necessary fitness movements, such as: incline dumbbell bench press, decline dumbbell bench press, flat dumbbell fly, etc. This kind of targeted fitness movement cannot be completed without the assistance of dumbbell bench. Chinese patent document with publication number CN205626860U discloses a dumbbell bench, including a dumbbell bench main structure and a limiting structure, which is characterized in that: the dumbbell bench main structure is composed of a front support tube, a ground tube, a foot hook tube, a back pad tube, a main curved tube, a back pad adjustment tube, a limiting hook and a rectangular foot cover. The central axis of the ground tube is arranged parallel to the horizontal plane, and the two ends of the ground tube are assembled with the rectangular foot cover. The upper end of the ground tube is fixed to the front support tube, and the upper end of the front support tube is assembled with the main curved tube. The middle position of the front support tube is installed with a foot hook. Tube, the central axis of the hook foot tube is arranged parallel to the horizontal plane, a back cushion tube is installed on the left side of the main bend tube, and a limiting hook is installed on the right side of the main bend tube. The upper end of the back cushion tube is fixed to the limiting hook on the main bend tube through the back cushion adjusting tube, and the back cushion adjusting tube is arranged in an H shape. The limiting structure consists of a seat cushion, foam and a back cushion. The seat cushion is installed at the upper end position of the left side of the main bend tube, and the upper end surface of the seat cushion is parallel to the horizontal plane. The back cushion is fixed to the back cushion tube, and two foams are provided and the two foams are distributed on both sides of the hook foot tube.

[0003] In actual use, the position and angle of the seat cushion of the dumbbell bench cannot be adjusted, and only relatively simple fitness exercises can be performed. Utility Model Content

[0004] The utility model aims to provide a dumbbell bench with adjustable seat angle and position in view of the deficiencies in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A dumbbell bench, comprising a bracket and a back pad assembly and a seat cushion assembly arranged on the bracket, characterized in that the seat cushion assembly comprises a seat cushion and a mounting frame, the mounting frame comprises a mounting seat, a front support arm, a rear support arm, a front latch, a rear latch and a limit latch, the seat cushion is fixedly arranged on the mounting seat, the upper end of the front support arm is rotatably connected to the front side of the bottom of the mounting seat, a plurality of front latch holes for connecting with the bracket are arranged on the front support arm, the bracket is provided with a first latch hole which can be opposite to the front latch hole, the upper end of the rear support arm is rotatably connected to the rear side of the bottom of the mounting seat, a plurality of rear latch holes for connecting with the bracket and a positioning pin hole for connecting with the mounting seat are arranged on the rear support arm, the bracket is provided with a second latch hole opposite to the rear latch hole, the mounting seat is provided with a plurality of limit pin holes, and the plurality of limit pin holes are distributed on an arc with the rotation axis of the rear support arm as the center, when in use, the front latch passes through a certain front latch hole and the first latch hole at the same time, the rear latch passes through a certain rear latch hole and the second latch hole at the same time, and the limit latch passes through a certain limit pin hole and the positioning pin hole at the same time.

[0007] In the above scheme, the seat cushion can be adjusted at different angles and positions by matching a plurality of different latch holes on the mounting frame with corresponding latches, thus meeting the requirements of different fitness movements.

[0008] A bracket in a dumbbell bench includes a front supporting leg and a rear supporting leg opened at a certain angle, a front supporting arm and a rear supporting arm are connected to the front supporting leg, and the first latch hole and the second latch hole are arranged on the front supporting leg.

[0009] In the above scheme, the front supporting legs and the rear supporting legs opened at a certain angle can make the structure of the dumbbell bench more stable, and setting the first latch hole and the second latch hole on the front supporting legs can make it more convenient to adjust the front supporting arms and the rear supporting arms.

[0010] The front supporting leg of the dumbbell bench includes a first transverse tube and a first inclined tube, the first transverse tube extends transversely, the first inclined tube is connected to the middle part of the first transverse tube and extends obliquely, the first latch hole and the second latch hole are spaced apart in the upper section of the first inclined tube along the length direction of the first inclined tube, and the first latch hole is lower than the second latch hole.

[0011] In the above solution, the first transverse tube and the first inclined tube are respectively integrally formed and can be pre-assembled, which can make the installation of the product more convenient.

[0012] The plurality of front pin holes of the dumbbell bench include a first front pin hole and a second front pin hole, the first front pin hole and the second front pin hole are arranged at intervals along the length direction of the front support arm at the lower section of the front support arm, and the second front pin hole is closer to the lower end of the front support arm than the first front pin hole; the plurality of rear pin holes include a first rear pin hole, a second rear pin hole and a third rear pin hole, the first rear pin hole, the second rear pin hole and the third rear pin hole are arranged at intervals along the length direction of the rear support arm, the first rear pin hole is arranged at the middle section of the rear support arm, the second rear pin hole and the third rear pin hole are arranged at the lower section of the rear support arm, and the third pin hole is closer to the lower end of the rear support arm than the second pin hole; the plurality of limit pin holes include a first limit pin hole, a second limit pin hole and a third limit pin hole, the first limit pin hole is located at a low position of an arc, the second limit pin hole and the third limit pin hole are located at a high position of an arc, and the third limit pin hole is higher than the second limit pin hole;

[0013] When the front latch pin is fixed in the first front latch pin hole, the rear latch pin is fixed in the first rear latch pin hole, and the limit pin is fixed in the first limit pin hole, the seat cushion is in a horizontal state;

[0014] When the front latch pin is fixed in the second front latch pin hole, the rear latch pin is fixed in the first rear latch pin hole, and the limit pin is fixed in the first limit pin hole, the seat cushion is in a first tilted state;

[0015] When the front latch pin is fixed in the first front latch pin hole, the rear latch pin is fixed in the second rear latch pin hole or the third rear latch pin hole, and the limit pin is fixed in the second limit hole or the third limit hole, the seat cushion is in the second inclined state.

[0016] In the above scheme, the front pin can pass through and be fixed in the first front pin hole or the second front pin hole, the rear pin can pass through and be fixed in the first rear pin hole or the second rear pin hole or the third rear pin hole, and the limit pin can pass through and be fixed in the first limit pin hole or the second limit hole or the third limit hole. By matching the above different pins with the corresponding pin holes, the seat cushion can be adjusted to different states to meet the different needs of the user, and the adjustment of the seat cushion can also be made more convenient.

[0017] The mounting base of the seat cushion assembly includes a top plate, two side plates, a first transfer shaft and a second transfer shaft, the two side plates are parallel to each other and vertically arranged at the bottom of the top plate, the first transfer shaft is arranged between the front sides of the two side plates, and the second transfer shaft is arranged between the rear sides of the two side plates. The front support arm includes two first elongated plates, the two first elongated plates are arranged in parallel and spaced apart, the upper ends of the two first elongated plates are rotatably supported between the two side plates by the first transfer shaft, the first inclined tube is located between the two first elongated plates, and the two first elongated plates are both formed with a plurality of front pin holes arranged relatively; the rear support arm includes two second elongated plates, the two second elongated plates are arranged in parallel and spaced apart, the upper ends of the two second elongated plates are rotatably supported between the two side plates by the second transfer shaft, the first inclined tube is located between the two second elongated plates, and the two second elongated plates are both formed with a plurality of rear pin holes arranged relatively.

[0018] In the above scheme, the two side plates are parallel to each other and vertically arranged at the bottom of the top plate, the bottom plate and the two side plates are integrally formed, and a first rotating shaft and a second rotating shaft are arranged in the middle of the two side plates. The upper ends of the front support arm and the rear support arm are respectively connected to the first rotating shaft and the second rotating shaft, which not only makes the installation more convenient but also makes the adjustment of the seat cushion position smoother. The first inclined tube is located between the two first long plates and the two second long plates, which can make the adjusted seat cushion more stable.

[0019] The back cushion assembly of the dumbbell bench includes a back cushion, a back cushion frame, a headrest, a headrest frame and a support rod. The back cushion is arranged on the top of the back cushion frame, the front end of the back cushion frame is rotatably arranged on the top of the bracket, the headrest frame is telescopically adjustable at the rear end of the back cushion frame, the headrest is fixedly arranged on the top of the headrest frame, the bracket is provided with a plurality of support parts arranged obliquely, the upper end of the support rod is rotatably connected to the back cushion frame, and the lower end is supported on the support part.

[0020] In the above solution, the back pad frame can make the back pad be in different angles to meet the needs of different fitness movements through the cooperation of the support rod and the multiple support parts.

[0021] The back cushion frame of the back cushion assembly includes two parallel and spaced-apart linear tubes, and the headrest frame includes a U-shaped tube. The two sections of the U-shaped tube can be inserted into the rear ends of the two linear tubes and connected to each other through a locking pin. A locking pin hole is formed in the rear section of the linear tube. The U-shaped tube is formed with a plurality of adjustment pin holes arranged at intervals along its length direction, and the locking pin passes through a certain adjustment pin hole and a locking pin hole at the same time.

[0022] In the above solution, the U-shaped tube body is integrally formed, which can facilitate the installation of the product. The multiple adjustment pin holes on the U-shaped tube can be adjusted in coordination with the locking pin, which makes the assembly and adjustment of the U-shaped tube more convenient.

[0023] The cross sections of the front supporting foot and the rear supporting foot of the bracket are both square, and a limiting portion is arranged on the rear supporting foot.

[0024] In the above solution, the front supporting feet and the rear supporting feet with square cross-sections have a larger contact area with the ground, which can increase the stability of the product when it is used, and the limiting part can further prevent the product from being displaced when it is used.

[0025] The first inclined tube of the dumbbell bench also includes a "T"-shaped hook foot rod, and the "T"-shaped hook foot rod is hingedly arranged on the first inclined tube.

[0026] In the above scheme, the "T"-shaped hook foot rod is hingedly arranged on the first inclined tube to facilitate the user to adjust the required angle according to the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional diagram of the utility model.

[0028] Figure 2 This is an exploded view of the seat cushion assembly and its related structures of the utility model.

[0029] Figure 3 This is an exploded view of the seat cushion assembly and related structures of the utility model from another perspective.

[0030] Figure 4 This is an exploded view of the headrest and related structures of the utility model.

[0031] Figure 5 It is the rear view of the utility model.

[0032] Figure 6 for Figure 5 Section view in AA direction

[0033] Figure 7 It is a three-dimensional diagram of the back pad of the utility model in an upright state.

[0034] Figure 8 This is a three-dimensional diagram of the utility model in the first inclined state.

[0035] Fig. 9 This is a three-dimensional diagram of the utility model in the second inclined state.

[0036] Fig.10 It is a three-dimensional diagram of the utility model in folded state. DETAILED DESCRIPTION

[0037] Reference Figures 1 to 10 A dumbbell bench is shown. The technical solution of the utility model is further described below through specific embodiments and in conjunction with the accompanying drawings of the specification:

[0038] A dumbbell bench comprises a bracket 1 and a back pad assembly 3 and a seat cushion assembly 2 arranged on the bracket 1, characterized in that: the bracket 1 comprises a front supporting foot and a rear supporting foot opened at a certain angle, the front supporting foot comprises a first transverse tube 12 and a first inclined tube 11, the rear supporting foot comprises a second transverse tube 16 and a second inclined tube 15, the seat cushion assembly 2 comprises a seat cushion 25 and a mounting frame, the mounting frame comprises a mounting seat, a front supporting arm 21, a rear supporting arm 22, a front latch 211, a rear latch 221 and a limit latch 225.

[0039] The mounting base of the seat cushion assembly 2 includes a top plate 23, two side plates 24, a first transfer shaft and a second transfer shaft. The two side plates 24 are parallel to each other and vertically arranged at the bottom of the top plate 23. The first transfer shaft and the second transfer shaft are respectively arranged at the upper end of the front support arm 21 and the upper end of the rear support arm 22. The first transfer shaft is composed of a first transfer bolt 214 and a first transfer nut 215. The first transfer bolt 214 passes through the first mounting hole 216 and is arranged between the front sides of the two side plates 24 in cooperation with the first transfer nut 215. The second transfer shaft is composed of a second transfer bolt 226 and a second transfer nut 227. The second transfer bolt 226 passes through the second mounting hole 228 and is arranged in cooperation with the second transfer nut 227. Between the rear sides of the two side plates 24, the front support arm 21 is composed of two first elongated plates, which are arranged in parallel and spaced apart, and a first connecting piece 215 is provided in the middle of the two first elongated plates, and the upper ends of the two first elongated plates are rotatably supported between the two side plates 24 through a first adapter shaft, and the first inclined tube 11 is located between the two first elongated plates, and the two first elongated plates are each formed with two front pin holes arranged oppositely; the rear support arm 22 includes two second elongated plates, which are arranged in parallel and spaced apart, and the upper ends of the two second elongated plates are rotatably supported between the two side plates 24 through a second adapter shaft, and the first inclined tube 11 is located between the two second elongated plates, and the two second elongated plates are each formed with three rear pin holes arranged oppositely.

[0040] The seat cushion 25 is fixedly arranged on the mounting seat, the upper end of the front support arm 21 is rotatably connected to the front side of the bottom of the mounting seat, the lower section of the front support arm 21 is provided with a first front pin hole 212 and a second front pin hole 213 for connecting with the bracket 1, the two front pin holes are arranged at intervals along the length direction of the front support arm 21, and the second front pin hole 213 is closer to the lower end of the front support arm 21 than the first front pin hole 212, the upper section of the first tilt tube 11 is provided with a first pin hole 13 which can be opposite to the first front pin hole 212 or the second front pin hole 213, the upper end of the rear support arm 22 is rotatably connected to the rear side of the bottom of the mounting seat, and the rear support The lower section of the support arm 22 is provided with a first rear pin hole 222, a second rear pin hole 223 and a third rear pin hole 224 for connecting with the bracket 1. The three rear pin holes are arranged at intervals along the length direction of the rear support arm 22. The first rear pin hole 222 is arranged in the middle section of the rear support arm 22, and the second rear pin hole 223 and the third rear pin hole 224 are arranged in the lower section of the rear support arm 22, and the third pin hole 224 is closer to the lower end of the rear support arm 22 than the second pin hole 223. The upper section of the first tilting tube 11 is provided with a third rear pin hole 222, the second rear pin hole 223 or the third rear pin hole 224, which is opposite to the first rear pin hole 222, the second rear pin hole 223 or the third rear pin hole 224. The first latch hole 13 and the second latch hole 14 are spaced apart in the upper section of the first inclined tube 11 along the length direction of the first inclined tube 11, the first latch hole 13 is lower than the second latch hole 14, the front latch 211 can pass through the first front latch hole 212 or the second front latch hole 213 and the first latch hole 13 at the same time, the rear latch 221 can pass through the first rear latch hole 222 or the second rear latch hole 223 or the third rear latch hole 224 and the second latch hole 14 at the same time, the mounting seat is also provided with a first limiting pin hole 245, a second limiting pin hole 243 and a third limiting pin hole 242, the first limiting pin hole 245 The second limit pin hole 243 and the third limit pin hole 242 are distributed on an arc with the rotation axis of the rear support arm 22 as the center, the first limit pin hole 245 is located at the low position of the arc, the second limit pin hole 243 and the third limit pin hole 242 are located at the high position of the arc, and the third limit pin hole 242 is higher than the second limit pin hole 243. The upper section of the rear support arm 22 is also provided with a positioning pin hole 229 for connecting with the mounting seat, and the limiting pin 225 passes through the positioning pin hole 229 and the first limit pin hole 245 or the second limit pin hole 243 or the third limit pin hole 242 at the same time to fix the rear support arm 22 between the two side plates 24.

[0041] Reference Figure 1 As shown, when the front latch 211 is fixed to the first front latch hole 212, the rear latch 221 is fixed to the first rear latch hole 222, and the limit pin 225 is fixed to the first limit pin hole 245, the seat cushion 25 is in a horizontal state, and the user can lie flat on the dumbbell bench with his head facing the headrest 32 and exercise with dumbbells;

[0042] Reference Figure 8As shown, when the front latch 211 is fixed to the second front latch hole 213, the rear latch 221 is fixed to the first rear latch hole 222, and the limit pin 225 is fixed to the first limit pin hole 245, the seat cushion 25 is in the first tilted state, and the user can lie on the dumbbell bench with his head facing the seat cushion 25 and exercise with the dumbbells;

[0043] Reference Fig. 9 As shown, when the front latch 221 is fixed to the first front latch hole 212, the rear latch 221 is fixed to the second rear latch hole 223 or the third rear latch hole 224, and the limit pin 225 is fixed to the second limit hole 243 or the third limit hole 242, the seat cushion 25 is in the second inclined state, and the user can sit on the back cushion 31 near one end of the seat cushion 25, and hook the "T"-shaped hook foot rod 111 with the foot and lean the elbows of both hands or one hand on the seat cushion 25 to exercise with dumbbells;

[0044] Reference Fig.10 As shown, when the front latch 211, the rear latch 221 and the limit latch 225 are not fixed in the corresponding latch holes, the dumbbell bench can be folded up.

[0045] The bracket 1 in the dumbbell bench includes a front supporting leg and a rear supporting leg that are opened at a certain angle. The front supporting leg and the rear supporting leg are rotatably connected, which is the prior art and will not be described in detail here. The front supporting leg includes a first transverse tube 12 and a first inclined tube 11. The first transverse tube 12 extends transversely, and the first inclined tube 11 is connected to the middle part of the first transverse tube 12 and extends obliquely. The rear supporting leg includes a second transverse tube 16 and a second inclined tube 15. The second transverse tube 16 extends transversely, and the second inclined tube 16 is connected to the middle part of the second transverse tube 16 and extends obliquely.

[0046] The cross section of the bracket 1 is square, and a limiting portion 161 is disposed on the side of the second transverse tube 16 .

[0047] The first inclined tube 11 further includes a T-shaped hook rod 111 . The T-shaped hook rod 111 is hingedly disposed on the first inclined tube 11 , which is a prior art and will not be described in detail herein.

[0048] The back cushion assembly 3 of the dumbbell bench includes a back cushion 31, a back cushion frame 34, a headrest 32, a headrest frame 35 and a support rod 36. The back cushion 34 is arranged on the top of the back cushion frame 34. The front end of the back cushion frame 34 is rotatably arranged on the upper end of the second inclined tube 15. The headrest frame 35 is telescopically adjustable at the rear end of the back cushion frame 34. The headrest 35 is fixed on the top of the headrest frame 35 by fixing bolts 37 and fixing nuts 371. The second inclined tube 15 is provided with six obliquely arranged support parts 151. The upper end of the support rod 36 is rotatably connected to the back cushion frame 34, and the lower end is supported on the support part 151.

[0049] The back cushion frame 34 includes two parallel and spaced-apart linear tubes, and the headrest frame 35 includes a U-shaped tube. The two sections of the U-shaped tube can be inserted into the rear ends of the two linear tubes and connected to each other through a locking pin 341. A locking pin hole 342 is formed in the rear section of the linear tube. The U-shaped tube is formed with a plurality of adjustment pin holes 36 arranged at intervals along its length direction. The locking pin 341 passes through a certain adjustment pin hole 36 and a locking pin hole 342 at the same time.

[0050] In daily use, the user can place the dumbbell bench on the ground by rotating the bracket 1 to a certain angle, and then further fix the position of the dumbbell bench through the limiting portion 161 on the second transverse tube 16 to prevent displacement during use. The user can also adjust the different states of the seat cushion 25 by adjusting the latch and the corresponding latch hole to meet the user's requirements for different fitness movements, and can also adjust the length of the U-shaped tube to meet the needs of users of different heights. When not in use, the latch can be pulled out of the corresponding latch hole and the dumbbell bench can be folded up.

[0051] The above description is only a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of implementation of the present utility model. That is, equivalent changes and modifications made according to the scope of the patent application of the present utility model and the contents of the specification should still fall within the scope covered by the patent of the present utility model.

Claims

1. A dumbbell bench, comprising a bracket and a back cushion assembly and a seat cushion assembly arranged on the bracket, characterized in that: The seat cushion assembly includes a seat cushion and a mounting bracket, the mounting bracket includes a mounting base, a front support arm, a rear support arm, a front latch, a rear latch and a limit latch, the seat cushion is fixedly arranged on the mounting base, the upper end of the front support arm is rotatably connected to the front side of the bottom of the mounting base, a plurality of front latch holes are provided on the front support arm for connecting with the bracket, the bracket is provided with a first latch hole which can be opposite to the front latch hole, the upper end of the rear support arm is rotatably connected to the rear side of the bottom of the mounting base, a plurality of rear latch holes for connecting with the bracket and a positioning pin hole for connecting with the mounting base are provided on the rear support arm, the bracket is provided with a second latch hole opposite to the rear latch hole, and the mounting base is provided with a plurality of limit pin holes, the plurality of limit pin holes are distributed on an arc centered on the rotation axis of the rear support arm. When in use, the front latch passes through a certain front latch hole and the first latch hole at the same time, the rear latch passes through a certain rear latch hole and the second latch hole at the same time, and the limit latch passes through a certain limit pin hole and the positioning pin hole at the same time.

2. A dumbbell bench according to claim 1, characterized in that: The bracket includes a front supporting leg and a rear supporting leg opened at a certain angle, the front supporting arm and the rear supporting arm are connected to the front supporting leg, and the first latch hole and the second latch hole are arranged on the front supporting leg.

3. A dumbbell bench according to claim 2, characterized in that: The front supporting foot includes a first transverse tube and a first inclined tube, the first transverse tube extends transversely, the first inclined tube is connected to the middle part of the first transverse tube and extends obliquely, the first latch hole and the second latch hole are spaced apart and distributed in the upper section of the first inclined tube along the length direction of the first inclined tube, and the first latch hole is lower than the second latch hole.

4. A dumbbell bench according to claim 1, characterized in that: The plurality of front pin holes include a first front pin hole and a second front pin hole, the first front pin hole and the second front pin hole are arranged at intervals along the length direction of the front support arm at the lower section of the front support arm, and the second front pin hole is closer to the lower end of the front support arm than the first front pin hole; the plurality of rear pin holes include a first rear pin hole, a second rear pin hole and a third rear pin hole, the first rear pin hole, the second rear pin hole and the third rear pin hole are arranged at intervals along the length direction of the rear support arm, the first rear pin hole is arranged at the middle section of the rear support arm, the second rear pin hole and the third rear pin hole are arranged at the lower section of the rear support arm, and the third pin hole is closer to the lower end of the rear support arm than the second pin hole; the plurality of limit pin holes include a first limit pin hole, a second limit pin hole and a third limit pin hole, the first limit pin hole is located at a low position of an arc, the second limit pin hole and the third limit pin hole are located at a high position of an arc, and the third limit pin hole is higher than the second limit pin hole; When the front latch pin is fixed in the first front latch pin hole, the rear latch pin is fixed in the first rear latch pin hole, and the limit pin is fixed in the first limit pin hole, the seat cushion is in a horizontal state; When the front latch pin is fixed in the second front latch pin hole, the rear latch pin is fixed in the first rear latch pin hole, and the limit pin is fixed in the first limit pin hole, the seat cushion is in a first tilted state; When the front latch pin is fixed in the first front latch pin hole, the rear latch pin is fixed in the second rear latch pin hole or the third rear latch pin hole, and the limit pin is fixed in the second limit hole or the third limit hole, the seat cushion is in the second inclined state.

5. The dumbbell bench according to claim 3, characterized in that: The mounting base comprises a top plate, two side plates, a first transfer shaft and a second transfer shaft, the two side plates are parallel to each other and vertically arranged at the bottom of the top plate, the first transfer shaft is arranged between the front sides of the two side plates, and the second transfer shaft is arranged between the rear sides of the two side plates, the front support arm comprises two first elongated plates, the two first elongated plates are arranged in parallel and spaced apart, the upper ends of the two first elongated plates are rotatably supported between the two side plates by the first transfer shaft, the first inclined tube is located between the two first elongated plates, and the two first elongated plates are both formed with a plurality of the front pin holes arranged relatively; the rear support arm comprises two second elongated plates, the two second elongated plates are arranged in parallel and spaced apart, the upper ends of the two second elongated plates are rotatably supported between the two side plates by the second transfer shaft, the first inclined tube is located between the two second elongated plates, and the two second elongated plates are both formed with a plurality of the rear pin holes arranged relatively.

6. A dumbbell bench according to any one of claims 1 to 5, characterized in that: The back cushion assembly includes a back cushion, a back cushion frame, a headrest, a headrest frame and a support rod. The back cushion assembly is arranged on the top of the back cushion frame, the front end of the back cushion frame is rotatably arranged on the top of the bracket, the headrest frame is telescopically adjustable at the rear end of the back cushion frame, the headrest is fixedly arranged on the top of the headrest frame, the bracket is provided with a plurality of support parts arranged obliquely, the upper end of the support rod is rotatably connected to the back cushion frame, and the lower end is supported on the support part.

7. A dumbbell bench according to claim 6, characterized in that: The back cushion frame includes two parallel and spaced-apart linear tubes, and the headrest frame includes a U-shaped tube. The two sections of the U-shaped tube can be inserted into the rear ends of the two linear tubes and connected to each other through a locking pin. The rear sections of the linear tubes are provided with a locking pin hole, and the U-shaped tube is provided with a plurality of adjustment pin holes spaced-apart along its length direction. The locking pin passes through a certain adjustment pin hole and a locking pin hole at the same time.

8. A dumbbell bench according to any one of claims 1 to 5, characterized in that: The bracket comprises a front supporting foot and a rear supporting foot, the cross sections of the front supporting foot and the rear supporting foot are both square, and a limiting portion is arranged on the rear supporting foot.

9. The dumbbell bench according to claim 3, characterized in that: The first inclined tube also includes a "T"-shaped hook foot rod, and the hook foot rod is hingedly arranged on the first inclined tube.

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