Dumbbell stool

Abstract

The utility model relates to the technical field of fitness auxiliary equipment, and provides a dumbbell stool which is characterized in that when the dumbbell stool is used, a seat cushion can move along one end facing a back cushion, and the back cushion is rotatably connected to a bracket through a supporting rod, so that when the seat cushion moves, the back cushion is rotatably supported on the bracket through the supporting rod, and the back cushion is unfolded; and a certain sitting angle is formed between the cushion and the seat cushion. Meanwhile, the angle of the back cushion on the support can be changed by moving the seat cushion to different positions, so that the user can sit on the seat better. Therefore, by moving the seat cushion, the angle of the back cushion is adjusted, the number of structures between the back cushion and the support is reduced, and the overall structural design is simplified. When the back cushion is stored, the back cushion can be folded only by sliding the seat cushion. Meanwhile, the base can be folded on the bracket only by releasing the fixation of the fixing assembly in the first fixing hole; after the dumbbell stool is folded, the fixing assemblies are fixed in the second fixing holes, so that the folded dumbbell stool is more stable.

Description

Technical Field

[0001] This utility model belongs to the technical field of fitness auxiliary equipment, and in particular relates to a dumbbell bench. Background Technology

[0002] Dumbbell benches are fitness aids commonly used to assist dumbbells in performing essential exercises such as incline dumbbell bench presses, decline dumbbell bench presses, and flat dumbbell flyes. Using dumbbells can improve joint and muscle control in various parts of the body, train smaller muscle groups surrounding the target muscle group, and effectively stimulate muscle tissue at the junctions between different muscle groups. This leads to tighter connections between muscle groups, resulting in more coordinated and aesthetically pleasing muscle development.

[0003] A dumbbell bench typically consists of a seat, backrest, support frame, and base. The seat and backrest are located on top of the support frame. During use, the backrest is unfolded via a folding mechanism, allowing for angle adjustment. The base is bolted to the bottom of the support frame. During packaging, the base is detached from the support frame by removing the bolts; during use, the base is secured again by tightening the screws. However, this structural design necessitates a complex folding mechanism between the backrest and support frame, resulting in a bulky bench and negatively impacting usability. Furthermore, the cumbersome process of folding and unfolding the base adds to the inconvenience of using the dumbbell bench. Utility Model Content

[0004] Based on the above background, the purpose of this utility model is to provide a dumbbell bench that simplifies the overall structural design; at the same time, it facilitates the storage and unfolding of the dumbbell bench, improving the convenience of using the dumbbell bench.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A dumbbell bench includes: a support frame; a seat cushion and a backrest cushion spaced apart on the support frame, one end of the backrest cushion being rotatably connected to the seat cushion, and a support rod being rotatably connected between the backrest cushion and the support frame; the seat cushion being movable along the length of the support frame so that the backrest cushion can be supported on the support frame by the support rod; a locking assembly for locking the seat cushion at different positions along the length of the support frame; and a base rotatably connected to one end of the support frame, wherein the base includes a seat body, a connector, an auxiliary component, and a fixing assembly, the connector and the auxiliary component being rotatably connected between the support frame and the seat body spaced apart; the support frame having a first fixing hole, and the seat body having a second fixing hole; when the base is rotatably opened from the support frame, the fixing assembly is fixed in the connector and the first fixing hole; when the base is rotatably folded onto the support frame, the fixing assembly is fixed in the connector and the second fixing hole.

[0007] Furthermore, the bracket is provided with a plurality of locking holes spaced apart along its own length direction, the locking component is connected to the seat cushion and is at least partially located on the side of the bracket with the locking holes, and a portion of the locking component can be inserted into different locking holes.

[0008] Furthermore, the bracket includes a main body and an edge portion disposed on one side of the main body. An upward-opening groove is formed between the edge portion and the main body. The locking hole is disposed on the edge portion. The seat cushion is slidably disposed on the top of the main body. The locking component is located on the side of the edge portion opposite to the groove and can be inserted into different locking holes.

[0009] Furthermore, the cushion includes a cushion body and a slide. The slide includes a support portion and two side portions spaced apart on the support portion. The support portion is attached to the top of the main body. The cushion body is located on the side of the support portion facing away from the main body, and the two side portions are respectively attached to both sides of the main body.

[0010] Furthermore, the locking assembly includes a locking member, a first elastic member, a first limiting member, and a mounting member. The mounting member is located on the side of the bracket with the locking hole and has a gap with the bracket. The mounting member has a first through hole, the locking member passes through the first through hole and is inserted into the locking hole. The first limiting member is located in the gap and is connected to the locking member. The first elastic member abuts against the side of the mounting member facing the gap and between it and the first limiting member.

[0011] Furthermore, the base is provided with a receiving groove, and the connector and the auxiliary component are rotatably connected to the groove wall of the receiving groove. The second fixing hole is provided in the groove wall of the receiving groove. When the base is rotated and folded onto the bracket, the base is stacked on the bracket, and the connector and the auxiliary component are received in the receiving groove.

[0012] Furthermore, the fixing component includes a fixing member, a second elastic member, and a second limiting member. The connecting member has a second through hole, the fixing member passes through the second through hole, the second limiting member is disposed on the fixing member, and the second elastic member abuts between the second limiting member and the connecting member. The groove wall of the receiving groove has a guide channel communicating with the second fixing hole. The end of the fixing member near the second limiting member is used to insert into the first fixing hole, and the end of the fixing member away from the second limiting member is inserted into the second fixing hole through the guide channel.

[0013] Furthermore, the fixing member sequentially includes a first fixing part, a transition part, and a second fixing part along its own axis. The diameter of the transition part gradually increases from the first fixing part to the second fixing part. The diameter of the second fixing part is greater than the width of the guide channel, and the width of the guide channel is greater than the diameter of the first fixing part. The second limiting member is disposed on the first fixing part. The first fixing part is used to insert into the first fixing hole. The transition part abuts against the end of the second through hole facing away from the second limiting member. When the transition part rotates to the guide channel, the inner wall of the guide channel will push the transition part to move away from the first fixing part, so that the first fixing part enters the guide channel. When the first fixing part enters the second fixing hole, the second fixing part is at least partially inserted into the second fixing hole.

[0014] Furthermore, the thickness of the guide channel is less than the thickness of the second fixing hole, and the guide channel and the second fixing hole are smoothly connected.

[0015] Furthermore, the dumbbell bench also includes a support, which is rotatably connected to the end of the bracket away from the base.

[0016] This utility model has the following beneficial effects:

[0017] (1) During use, the seat cushion can be moved towards the backrest. Since the backrest is rotatably connected to the support frame via a support rod, when the seat cushion moves, the backrest is supported on the support frame by the rotation of the support rod, allowing the backrest to unfold and form a certain sitting angle with the seat cushion. At the same time, by moving the seat cushion to different positions, the angle of the backrest on the support frame can be changed for better user comfort. It can be seen that by moving the seat cushion, the angle of the backrest can be adjusted, reducing the number of structures between the backrest and the support frame, which is conducive to simplifying the overall structural design. When storing, simply slide the seat cushion to fold the backrest. At the same time, simply release the fixing component in the first fixing hole to fold the base onto the support frame; after folding, fix the fixing component in the second fixing hole to make the folded dumbbell bench more stable. This facilitates the storage and unfolding of the dumbbell bench, improving the convenience of using the dumbbell bench.

[0018] (2) The locking component is designed as a locking element and a first elastic element. When the locking element is pulled outward, the first elastic element can be compressed, causing the locking element to disengage from the current locking hole. When the seat cushion is moved to the appropriate position, the locking element is released. At this time, the locking element automatically locks into the corresponding locking hole under the elastic force of the first elastic element, ensuring that the seat cushion is locked in the adjusted position.

[0019] (3) The fixing component is designed as a fixing member and a second elastic member. When the connecting member is unfolded from the bracket, the fixing member is inserted into the first fixing hole under the action of the second elastic member, so that the connecting member is locked on the bracket, ensuring the stable use of the dumbbell bench. When the connecting member is folded from the bracket and stored in the receiving groove, the end of the fixing member away from the second limiting member can be moved to the second fixing hole through the guide channel, so that the connecting member is locked with the seat, ensuring that the dumbbell bench is fixed after being folded, and avoiding the separation of various parts during transportation, which would affect the transportation efficiency.

[0020] (4) The fastener is designed with a first fixing part, a transition part, and a second fixing part in sequence along its own axis. When the connector is folded into the receiving groove, the transition part cannot enter the guide channel because the diameter of the second fixing part is larger than the width of the guide channel, and the width of the guide channel is larger than the diameter of the first fixing part. At this time, the guide channel will drive the transition part to move to one side of the second fixing part and compress the second elastic element, so that the first fixing part is stuck in the guide channel, thereby allowing the connector to continue to rotate into the receiving groove. When the first fixing part moves into the second fixing hole, the second fixing part is automatically inserted into the second fixing hole under the elastic force of the second elastic element, so as to realize the automatic locking between the connector and the base body and simplify the folding operation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a structural diagram of a dumbbell bench provided in one embodiment;

[0023] Figure 2 This is a structural diagram of a fully unfolded dumbbell bench provided in one embodiment;

[0024] Figure 3 This is a structural diagram of a folded dumbbell bench provided in one embodiment;

[0025] Figure 4 This is a cross-sectional view of the structure of the seat cushion and the support frame provided in one embodiment;

[0026] Figure 5 A structural cross-sectional view of the connector locked onto the bracket in one embodiment;

[0027] Figure 6 This is a structural diagram of a fixed component provided in one embodiment;

[0028] Figure 7 A partial structural view of a connector locked onto a bracket according to one embodiment;

[0029] Figure 8 for Figure 7 A partial structural cross-sectional view along the AA direction.

[0030] Explanation of icon numbers:

[0031] 100. Dumbbell bench; 10. Support frame; 11. Main body; 12. Edge; 121. Locking hole; 122. Slide groove; 123. Gap; 13. First fixing hole; 20. Seat cushion; 21. Cushion body; 22. Slide seat; 221. Supporting part; 222. Side; 30. Backrest cushion; 31. Support rod; 40. Locking assembly; 41. Locking element; 42. First elastic element; 43. First limiting element; 44. Mounting element; 441. The first... 50. Perforation; 51. Base; 51. Seat body; 511. Receiving groove; 512. Guide channel; 513. Second fixing hole; 52. Connector; 521. Second perforation; 522. Connecting part; 523. Rod part; 53. Auxiliary part; 54. Fixing assembly; 541. Fixing part; 54a. First fixing part; 54b. Transition part; 54c. Second fixing part; 542. Second elastic element; 543. Second limiting element; 60. Support.

[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0036] In one embodiment, please refer to Figures 1 to 3 This application provides a dumbbell bench 100, including: a support 10, a seat cushion 20, a backrest cushion 30, a locking assembly 40, and a base 50. The seat cushion 20 and the backrest cushion 30 are spaced apart on the support 10. One end of the backrest cushion 30 is rotatably connected to the seat cushion 20, and a support rod 31 is rotatably connected between the backrest cushion 30 and the support 10. The seat cushion 20 is configured to move along the length direction of the support 10 so that the backrest cushion 30 can be supported on the support 10 by the support rod 31. The locking assembly 40 is used to lock the seat cushion 20 at different positions along the length direction of the support 10. The base 50 is rotatably connected to one end of the bracket 10. The base 50 includes a seat body 51, a connector 52, an auxiliary component 53, and a fixing component 54. The connector 52 and the auxiliary component 53 are rotatably connected between the bracket 10 and the seat body 51 at intervals. The bracket 10 is provided with a first fixing hole 13, and the seat body 51 is provided with a second fixing hole 513. When the base 50 is rotated open from the bracket 10, the fixing component 54 is fixed in the connector 52 and the first fixing hole 13. When the base 50 is rotated and folded on the bracket 10, the fixing component 54 is fixed in the connector 52 and the second fixing hole 513.

[0037] In use, the dumbbell bench 100 described above allows the seat cushion 20 to be moved towards the backrest cushion 30. Since the backrest cushion 30 is rotatably connected to the support frame 10 via the support rod 31, when the seat cushion 20 moves, the backrest cushion 30 is supported by the support rod 31, allowing it to unfold and form a certain seating angle with the seat cushion 20. Simultaneously, by moving the seat cushion 20 to different positions, the angle of the backrest cushion 30 on the support frame 10 can be changed for a more comfortable seating experience. It can be seen that by moving the seat cushion 20, the angle of the backrest cushion 30 can be adjusted, reducing the number of structural elements between the backrest cushion 30 and the support frame 10, thus simplifying the overall structural design. For storage, simply sliding the seat cushion 20 allows the backrest cushion 30 to be folded. Meanwhile, by simply releasing the fixing component 54 in the first fixing hole 13, the base 50 can be folded onto the bracket 10; after folding, the fixing component 54 is fixed in the second fixing hole 513, making the folded dumbbell bench 100 more stable. This facilitates the storage and unfolding of the dumbbell bench 100, improving the ease of use of the dumbbell bench 100.

[0038] It should be explained that the seat cushion 20 can be designed to move on the support 10 in various ways. For example, the seat cushion 20 may have a groove-like structure, and the support 10 may have a protruding structure that mates with the groove-like structure; or the seat cushion 20 may have a protruding structure, and the support 10 may have a groove-like structure; or the seat cushion 20 may be mounted on the support 10 via a roller structure. Once the seat cushion 20 has moved to the desired position, it can be locked using the locking assembly 40. The locking method can also be varied, such as bolt connection, pin connection, or snap-fit ​​connection. Simultaneously, the movement of the seat cushion 20 can adjust the support angle of the backrest 30. For example, in this embodiment, the angle of the backrest 30 can be adjusted between 30° and 85°.

[0039] It should also be noted that the fixing component 54, when inserted into the first fixing hole 13 or the second fixing hole 513, can lock the connector 52 to the bracket 10 or the base 51, thereby achieving stable unfolding or folding. The fixing component 54 can be designed as a bolt or pin, etc. When the connector 52 is folded onto the bracket 10, the fixing component 54 is inserted into the second fixing hole 513, locking the connector 52 to the base 51; when the connector 52 is unfolded onto the bracket 10, the fixing component 54 is inserted into the first fixing hole 13, locking the connector 52 to the bracket 10. Of course, the fixing component 54 can also be designed as a flexible structure to achieve automatic locking.

[0040] Further, please refer to Figure 3 and Figure 4The support 10 has a plurality of locking holes 121 spaced apart along its length. The locking component 40 is connected to the seat cushion 20 and is at least partially located on the side of the support 10 with the locking holes 121. A portion of the locking component 40 can be inserted into different locking holes 121. It can be seen that by inserting the locking component 40 into different locking holes 121, the seat cushion 20 can be locked at different positions.

[0041] The locking hole 121 can have various shapes, such as, but not limited to, circles, squares, ovals, etc., as long as they can accommodate the insertion of the locking component 40.

[0042] Furthermore, please refer to Figure 4 The support 10 includes a main body 11 and an edge portion 12 located on one side of the main body 11. An upward-opening groove 122 is formed between the edge portion 12 and the main body 11. Locking holes 121 are located on the edge portion 12. The seat cushion 20 is slidably disposed on the top of the main body 11. A locking assembly 40 is located on the side of the edge portion 12 facing away from the groove 122 and can be inserted into different locking holes 121. It is understood that the groove 122 formed between the edge portion 12 and the main body 11 allows the seat cushion 20 to be stably slidably disposed on the support 10.

[0043] In one embodiment, please refer to Figure 4 The seat cushion 20 includes a cushion body 21 and a slide 22. The slide 22 includes a support portion 221 and two side portions 222 spaced apart on the support portion 221. The support portion 221 is attached to the top of the main body 11, and the cushion body 21 is located on the side of the support portion 221 facing away from the main body 11. The two side portions 222 are respectively attached to the two sides of the main body 11. This ensures that the seat cushion 20 can move stably on the support 10.

[0044] Specifically, the supporting part 221 and the two side parts 222 are an integrated structure, which not only simplifies the manufacturing process of the slide 22, but also helps to improve the structural strength of the slide 22.

[0045] In one embodiment, please refer to Figure 4 The locking assembly 40 includes a locking member 41, a first elastic member 42, a first limiting member 43, and a mounting member 44. The mounting member 44 is located on the side of the bracket 10 with the locking hole 121 and has a gap 123 between it and the bracket 10. The mounting member 44 is provided with a first through hole 441. The locking member 41 passes through the first through hole 441 and is inserted into the locking hole 121. The first limiting member 43 is located in the gap 123 and is connected to the locking member 41. The first elastic member 42 abuts against the side of the mounting member 44 facing the gap 123 between it and the first limiting member 43.

[0046] It can be seen that the locking component 40 is designed with a locking member 41 and a first elastic member 42. When the locking member 41 is pulled outward, the first elastic member 42 can be compressed, causing the locking member 41 to disengage from the current locking hole 121. When the seat cushion 20 moves to the appropriate position, the locking member 41 is released. At this time, the locking member 41 automatically locks into the corresponding locking hole 121 under the elastic force of the first elastic member 42, ensuring that the seat cushion 20 is locked in the adjusted position.

[0047] Optionally, the first elastic element 42 may be, but is not limited to, a spring, an elastic metal sheet, or an elastic rubber.

[0048] Further, please refer to Figure 1 and Figure 3 The base 51 is provided with a receiving groove 511. The connecting member 52 and the auxiliary member 53 are rotatably connected to the groove wall of the receiving groove 511. The second fixing hole 513 is provided in the groove wall of the receiving groove 511. When the base 50 is rotated and folded onto the bracket 10, the base 51 is stacked on the bracket 10, and the connecting member 52 and the auxiliary member 53 are housed in the receiving groove 511. It can be seen that the receiving groove 511 allows the connecting member 52 to be housed inside the base 51, making the structure more compact and reducing the volume after folding.

[0049] In one embodiment, please refer to Figure 5 and Figure 6 The fixing component 54 includes a fixing member 541, a second elastic member 542, and a second limiting member 543. The connecting member 52 is provided with a second through hole 521. The fixing member 541 passes through the second through hole 521. The second limiting member 543 is provided on the fixing member 541, and the second elastic member 542 abuts between the second limiting member 543 and the connecting member 52. The groove wall of the receiving groove 511 is provided with a guide channel 512 communicating with the second fixing hole 513. One end of the fixing member 541 near the second limiting member 543 is used to insert into the first fixing hole 13, and the other end of the fixing member 541 away from the second limiting member 543 is inserted into the second fixing hole 513 through the guide channel 512.

[0050] It can be seen that the fixing component 54 is designed as a fixing member 541 and a second elastic member 542. When the connecting member 52 is unfolded from the bracket 10, the fixing member 541 is inserted into the first fixing hole 13 under the action of the second elastic member 542, so that the connecting member 52 is locked on the bracket 10, ensuring the stable use of the dumbbell bench 100. When the connecting member 52 is folded from the bracket 10 and housed in the receiving groove 511, the end of the fixing member 541 away from the second limiting member 543 can be moved to the second fixing hole 513 through the guide channel 512, so that the connecting member 52 is locked with the seat body 51, ensuring that the dumbbell bench 100 is fixed after being folded, and avoiding the separation of various parts during transportation, which would affect the transportation efficiency.

[0051] Optionally, the second elastic element 542 may be, but is not limited to, a spring, an elastic metal sheet, or an elastic rubber.

[0052] To facilitate the connection of the connector 52 between the bracket 10 and the base 51, the connector 52 includes a rod portion 523 and a connecting portion 522 connected to one end of the rod portion 523. The end of the rod portion 523 away from the connecting portion 522 is rotatably connected to the base 51. The connecting portion 522 is rotatably connected to the bracket 10, and a second through hole 521 is provided in the connecting portion 522.

[0053] Further, please refer to Figure 6 The fixing member 541 includes a first fixing part 54a, a transition part 54b, and a second fixing part 54c in sequence along its own axis. The diameter of the transition part 54b gradually increases from the first fixing part 54a to the second fixing part 54c. The diameter of the second fixing part 54c is greater than the width of the guide channel 512, and the width of the guide channel 512 is greater than the diameter of the first fixing part 54a. The second limiting member 543 is disposed on the first fixing part 54a. The first fixing part 54a is used to be inserted into the first fixing hole 13. The transition part 54b abuts against the end of the second through hole 521 facing away from the second limiting member 543. When the transition part 54b rotates to the guide channel 512, the inner wall of the guide channel 512 will push the transition part 54b to move away from the first fixing part 54a, so that the first fixing part 54a enters the guide channel 512. When the first fixing part 54a enters the second fixing hole 513, the second fixing part 54c is at least partially inserted into the second fixing hole 513.

[0054] As can be seen, the fastener 541 is designed with a first fixing part 54a, a transition part 54b, and a second fixing part 54c sequentially along its own axis. When the connector 52 folds into the receiving groove 511, because the diameter of the second fixing part 54c is larger than the width of the guide channel 512, and the width of the guide channel 512 is larger than the diameter of the first fixing part 54a, the transition part 54b cannot pass into the guide channel 512. At this time, the guide channel 512 will drive the transition part 54b to move towards the side of the second fixing part 54c and compress the second elastic member 542, so that the first fixing part 54a is stuck into the guide channel 512, thereby allowing the connector 52 to continue to rotate into the receiving groove 511. When the first fixing part 54a moves into the second fixing hole 513, the second fixing part 541 automatically inserts into the second fixing hole 513 under the elastic force of the second elastic member 542, so as to realize the automatic locking between the connector 52 and the seat 51 and simplify the folding operation.

[0055] In one embodiment, please refer to Figure 7 and Figure 8The thickness of the guide channel 512 is less than the thickness of the second fixing hole 513, and the guide channel 512 and the second fixing hole 513 are smoothly connected. This is so that the inner wall of the guide channel 512 pushes the transition portion 54b, causing the first fixing portion 54a to engage in the guide channel 512. Simultaneously, as the first fixing portion 54a moves into the second fixing hole 513, because of the smooth transition connection between the guide channel 512 and the second fixing hole 513, the transition connection gradually drives the transition portion 54b outwards when it enters the second fixing hole 513. After the first fixing portion 54a moves into the second fixing hole 513, the second elastic member 542 is released, causing the transition portion 54b and a portion of the second fixing portion 54c to both insert into the second fixing hole 513, thus achieving effective locking.

[0056] Further, please refer to Figures 1 to 3 The dumbbell bench 100 also includes a support 60, which is rotatably connected to the end of the support 10 away from the base 50. This ensures that the support 10 is stably supported and convenient for user use.

[0057] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A dumbbell bench characterized by, The utility model provides a kind of sofa, including: Support (10); Seat (20) and back cushion (30), interval is provided on the support (10), one end of the back cushion (30) is rotatably connected with the seat (20), and support rod (31) is rotatably connected between the back cushion (30) and the support (10), the seat (20) is arranged to be moved along the length direction of the support (10), so that the back cushion (30) can be supported on the support (10) by the support rod (31); Locking assembly (40) for locking the seat (20) at different positions along the length direction of the support (10); Base (50) is rotatably connected to one end of the support (10), wherein the base (50) includes a seat body (51), a connecting piece (52), an auxiliary piece (53) and a fixing assembly (54), the connecting piece (52) and the auxiliary piece (53) are rotatably connected between the support (10) and the seat body (51), the support (10) is provided with a first fixing hole (13), the seat body (51) is provided with a second fixing hole (513), when the base (50) is rotatably opened from the support (10), the fixing assembly (54) is fixed in the connecting piece (52) and the first fixing hole (13), when the base (50) is rotatably folded on the support (10), the fixing assembly (54) is fixed in the connecting piece (52) and the second fixing hole (513).

2. The dumbbell bench of claim 1, wherein, The support (10) is provided with a plurality of locking holes (121) along the length direction, the locking assembly (40) is connected with the seat (20), and at least part of the locking assembly (40) is located on the side of the support (10) having the locking holes (121), and a part of the locking assembly (40) can be inserted into different locking holes (121).

3. A dumbbell bench as claimed in claim 2, wherein, The support (10) includes a main body portion (11) and an edge portion (12) provided on one side of the main body portion (11), a sliding groove (122) with an opening upward is formed between the edge portion (12) and the main body portion (11), the locking holes (121) are provided on the edge portion (12), the seat (20) is slidingly provided on the top of the main body portion (11), the locking assembly (40) is located on the side of the edge portion (12) away from the sliding groove (122) and can be inserted into different locking holes (121).

4. The dumbbell bench of claim 3, wherein, The seat (20) includes a cushion body (21) and a sliding seat (22), the sliding seat (22) includes a bearing portion (221) and two side portions (222) provided on the bearing portion (221) in a spaced manner, the bearing portion (221) is attached to the top of the main body portion (11), the cushion body (21) is provided on the side of the bearing portion (221) away from the main body portion (11), and the two side portions (222) are respectively attached to the two sides of the main body portion (11).

5. The dumbbell bench according to claim 2, wherein, The locking assembly (40) comprises a locking piece (41), a first elastic piece (42), a first limiting piece (43) and a mounting piece (44), the mounting piece (44) is located on one side of the support (10) with the locking hole (121), and has a gap (123) with the support (10), the mounting piece (44) is provided with a first through hole (441), the locking piece (41) is arranged in the first through hole (441) and inserted into the locking hole (121), the first limiting piece (43) is located in the gap (123) and connected with the locking piece (41), and the first elastic piece (42) is abutted between one side of the mounting piece (44) towards the gap (123) and the first limiting piece (43).

6. A dumbbell bench according to any one of claims 1-5, characterized in that The seat body (51) is provided with a containing groove (511), the connecting piece (52) and the auxiliary piece (53) are both rotationally connected to the groove wall of the containing groove (511), and the second fixing hole (513) is arranged on the groove wall of the containing groove (511); when the base (50) is rotationally folded on the support (10), the seat body (51) is overlapped on the support (10), and the connecting piece (52) and the auxiliary piece (53) are accommodated in the containing groove (511).

7. A dumbbell bench as claimed in claim 6, characterized in that The fixing assembly (54) comprises a fixing piece (541), a second elastic piece (542) and a second limiting piece (543), the connecting piece (52) is provided with a second through hole (521), the fixing piece (541) is arranged in the second through hole (521), the second limiting piece (543) is arranged on the fixing piece (541), and the second elastic piece (542) is abutted between the second limiting piece (543) and the connecting piece (52), the groove wall of the containing groove (511) is provided with a guide channel (512) in communication with the second fixing hole (513), one end of the fixing piece (541) close to the second limiting piece (543) is used for being inserted into the first fixing hole (13), and the other end of the fixing piece (541) away from the second limiting piece (543) is inserted into the second fixing hole (513) through the guide channel (512).

8. The dumbbell bench according to claim 7, wherein, The fixing piece (541) comprises a first fixing portion (54a), a transition portion (54b) and a second fixing portion (54c) in sequence along the axis direction of the fixing piece (541), the diameter of the transition portion (54b) gradually increases in the direction from the first fixing portion (54a) to the second fixing portion (54c), the diameter of the second fixing portion (54c) is greater than the width of the guide channel (512), and the width of the guide channel (512) is greater than the diameter of the first fixing portion (54a). The second limiting piece (543) is arranged in the first fixed part (54a) which is used for inserting into the first fixed hole (13), the transition part (54b) abuts one end of the second through hole (521) away from the second limiting piece (543), when the transition part (54b) rotates to the guide channel (512), the inner wall of the guide channel (512) pushes the transition part (54b) to move in the direction away from the first fixed part (54a), so that the first fixed part (54a) enters the guide channel (512), when the first fixed part (54a) enters the second fixed hole (513), the second fixed part (54c) is at least partially inserted into the second fixed hole (513).

9. A dumbbell bench as claimed in claim 8, wherein, The thickness of the guide channel (512) is less than the thickness of the second fixed hole (513), and the guide channel (512) and the second fixed hole (513) are smoothly connected.

10. A dumbbell bench according to any one of claims 1-5, wherein, The dumbbell stool further comprises a support (60) rotatably connected to one end of the support (10) away from the base (50).

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