Multifunctional body-building disc

Abstract

The utility model discloses a multifunctional body-building disc, which comprises a first disc body and a second disc body which are distributed up and down, a ball disc, a limiting ring, a limiting shaft and a pushing piece are arranged on the first disc body, a circular plate is arranged at one end, facing the first disc body, of the second disc body, a shaft hole is formed in the circular plate, and the ball disc is arranged in the shaft hole. The round plate is in sliding fit with the ball disc, the limiting ring is arranged on the outer side of the round plate and the outer side of the ball disc in a surrounding mode, the diameter of the round plate is smaller than the inner diameter of the limiting ring, and the limiting shaft is in vertical sliding fit with the first disc body. The pushing piece is used for driving the limiting shaft to be inserted into the shaft hole or separated from the shaft hole; the fitness equipment has the advantages that micro-motion shaping and core training can be considered, diversified fitness requirements of users are met, and applicability is good.

Description

Technical Field

[0001] This utility model belongs to the field of fitness equipment technology, and in particular relates to a multifunctional fitness plate. Background Technology

[0002] In recent years, with increasing emphasis on healthy living, various fitness equipment has become more widespread. Among them, the waist twisting disc, as a simple and easy-to-use core training tool, is widely welcomed by consumers. A traditional waist twisting disc, such as the counting waist twisting disc disclosed in application number CN2022226247496, includes a twisting base and a rotating disc mounted on the twisting base. The twisting base has a lower sliding rail, and the rotating disc has an upper sliding rail. A rolling frame is located between the upper and lower sliding rails. The rolling frame has several grooves, and ball bearings adapted to the grooves are installed in the grooves. Through the rotation of the ball bearings, the rotating disc and the twisting base can rotate relative to each other. Users can stand or sit on the rotating disc and twist their bodies left and right, causing the rotating disc to rotate around its axis, thus exercising the oblique muscles and hip joints to achieve fitness goals.

[0003] As the number of people using fitness equipment increases, the functional requirements for fitness equipment have also increased accordingly. Traditional waist twisting discs have a single function, only able to rotate around an axis. Although they can meet the core training needs, they cannot take into account the micro-movement shaping needs, so there is still room for improvement. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a multifunctional fitness plate that can take into account both micro-exercise shaping and core training, meet the diverse fitness needs of users, and has good applicability.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a multifunctional fitness disc, including a first disc body and a second disc body distributed vertically. The first disc body is provided with a ball bearing disc, a limiting ring, a limiting shaft, and a pushing member. A circular plate is provided at one end of the second disc body facing the first disc body. The circular plate is provided with a shaft hole. The circular plate is slidably engaged with the ball bearing disc. The limiting ring is arranged around the outside of the circular plate and the ball bearing disc. The diameter of the circular plate is smaller than the inner diameter of the limiting ring. The limiting shaft is slidably engaged with the first disc body vertically. The pushing member is used to drive the limiting shaft to be inserted into the shaft hole or separated from the shaft hole.

[0006] Preferably, the first disc body includes a mounting base with an opening at the top and an upper cover covering the opening. The mounting base and the upper cover cooperate to form a mounting cavity. The ball bearing, the limiting ring, and the circular plate are all located in the mounting cavity. The upper cover has a first through hole at its center. The upper end of the circular plate is connected to the second disc body through a connector that passes through the first through hole. The diameter of the connector is smaller than the diameter of the first through hole.

[0007] Preferably, the inner diameter of the limiting ring is denoted as L1, the diameter of the circular plate is denoted as L2, the diameter of the first through hole is denoted as L3, and the diameter of the connector is denoted as L4, satisfying: L1 > L2 > L3 > L4, and L1 - L3 < L2 - L4.

[0008] Preferably, the limiting ring is fixedly disposed at the lower end of the upper cover, and a first support ring is fixedly disposed inside the mounting base. The first support ring is sleeved on the outside of the limiting ring, and the first support ring is connected to the inner wall of the mounting base by a first reinforcing rib. A second support ring is fixedly disposed at the lower end of the upper cover. The second support ring is sleeved on the outside of the first support ring, and the second support ring is connected to the edge of the upper cover by a second reinforcing rib.

[0009] Preferably, the upper cover is provided with a plurality of second ball grooves, the second ball grooves penetrate the upper and lower end faces of the upper cover, and a second ball is provided in the second ball groove. The mounting base is provided with a seat ring, and the seat ring is provided with a plurality of second arc-shaped grooves corresponding one-to-one with the second ball grooves. The lower part of the second ball extends into the corresponding second arc-shaped groove, and the upper part of the second ball extends out of the second ball groove and contacts the second disc body.

[0010] Preferably, the lower end of the mounting base is provided with a mounting hole, the limiting shaft and the pushing member are both located at the mounting hole, and the ball bearing plate is provided with a through-hole coaxial with the mounting hole.

[0011] Preferably, the inner wall of the mounting hole extends inward to form an inner convex ring. A sleeve and a cap fitted on the sleeve are fixedly disposed at the upper end of the inner convex ring. An annular cavity is formed between the upper end of the sleeve and the inner top surface of the cap. A deep groove and a shallow groove are provided at the upper end of the sleeve. A second through hole coaxial with the through opening is provided on the inner top surface of the cap. The pusher includes a knob. A lug extending into the annular cavity is fixedly disposed on the side of the knob. The knob is movably disposed in the sleeve. The lower end of the limiting shaft is connected to the knob. When the lug extends into the deep groove, the upper end of the limiting shaft extends into the second through hole. When the lug extends into the shallow groove, the upper end of the limiting shaft passes through the second through hole and extends into the shaft hole.

[0012] Preferably, the upper end of the knob is provided with a slot, an annular groove and a compression spring, the lower end of the limiting shaft is inserted into the slot, the annular groove is arranged around the slot, the lower end of the compression spring extends into the annular groove, and the upper end of the compression spring abuts against the inner top surface of the cover.

[0013] Preferably, a positioning block is fixedly provided on the outer side of the sleeve, and a positioning notch is provided at the lower end of the cover. The positioning block is inserted into the positioning notch. A guide block and a limiting block are fixedly provided on the inner side of the cover. The guide block is located above the deep groove, and the side of the guide block facing the deep groove is provided with an inclined guide surface. The limiting block is located on the side of the shallow groove away from the deep groove, and the distance between the limiting block and the upper end face of the sleeve is less than the height of the lug.

[0014] Preferably, the ball bearing plate includes a ball bearing frame with a plurality of first balls disposed thereon, and the circular plate is in contact with the first balls.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] 1. When the limiting shaft is inserted into the shaft hole, the second disc can rotate around the limiting shaft. The user can stand or sit on the second disc and twist their body left and right to exercise the oblique muscles and hip joint, meeting the core training needs. When the limiting shaft is separated from the shaft hole, the circular plate can move laterally within the limiting ring. The user can sit on the second disc and make circular movements of the buttocks to promote blood circulation in the buttocks and meet the micro-movement shaping needs. It can be seen that this technical solution can take into account both micro-movement shaping and core training, meet the diverse fitness needs of users, and has good applicability.

[0017] 2. The training mode can be switched by pushing the limiting shaft into or out of the shaft hole. The structure is simple, easy to operate and convenient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the explosive structure of this utility model. Figure 1 ;

[0021] Figure 4 This is a schematic diagram of the explosive structure of this utility model. Figure 2 ;

[0022] Figure 5 This is a schematic diagram of the structure of the upper cover and the limiting ring in this utility model;

[0023] Figure 6 This is a cross-sectional structural diagram of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of the ball bearing disc in this utility model;

[0025] Figure 8 This is a partial cross-sectional structural diagram of the present invention;

[0026] Figure 9 This is a schematic diagram of the structure of the first disc body in this utility model;

[0027] Figure 10 This is an exploded structural diagram of the first disc body in this utility model;

[0028] Figure 11 This is a schematic diagram of a partial explosion structure of the present invention;

[0029] Figure 12 for Figure 11 Enlarged view of point A in the middle;

[0030] Figure 13 This is a cross-sectional structural diagram of the mounting base in this utility model;

[0031] Figure 14 This is a schematic diagram of the structure of the cap in this utility model.

[0032] In the diagram: 1. First disc body; 11. Mounting base; 111. First support ring; 112. First reinforcing rib; 113. Mounting hole; 114. Inner convex ring; 115. Sleeve; 1151. Deep groove; 1152. Shallow groove; 1153. Positioning block; 116. Cover; 1161. Second through hole; 1162. Positioning notch; 1163. Guide block; 1164. Limiting block; 117. Seat ring; 1171. Second arc groove; 12. Top cover; 121. First through hole; 122. Second support ring; 123. Second reinforcing rib; 124. Second ball groove; 125. Second ball; 13. Mounting cavity; 2. Second disc body; 21. Circular plate; 211. Shaft hole; 212. Connector; 3. Ball disc; 31. Ball holder; 32. First ball groove; 33. First ball; 34. Through port; 4. Limiting ring; 5. Limiting shaft; 6. Pushing component; 61. Knob; 611. Slot; 612. Annular groove; 62. Lug; 63. Compression spring. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] Example 1: As Figures 1 to 7 As shown, a multifunctional fitness disc includes a first disc body 1 and a second disc body 2 arranged vertically. The first disc body 1 is provided with a ball bearing disc 3, a limiting ring 4, a limiting shaft 5, and a pushing member 6. The second disc body 2 has a circular plate 21 at one end facing the first disc body 1. The circular plate 21 has a shaft hole 211 and slides with the ball bearing disc 3. The limiting ring 4 is arranged around the outer side of the circular plate 21 and the ball bearing disc 3. The diameter of the circular plate 21 is smaller than the inner diameter of the limiting ring 4. The limiting shaft 5 slides vertically with the first disc body 1. The pushing member 6 is used to drive the limiting shaft 5 to be inserted into or separated from the shaft hole 211. Preferably, the shaft hole 211 is located at the center of the circular plate 21.

[0036] In this embodiment, the ball bearing plate 3 includes a ball bearing frame 31, on which a plurality of first ball bearing grooves 32 are radially distributed. Each first ball bearing groove 32 contains a first ball bearing 33, which extends out of the first ball bearing groove 32. The circular plate 21 contacts the first ball bearing 33, and the contacting first ball bearing 33 will roll during the movement or rotation of the circular plate 21. Furthermore, the first ball bearing groove 32 is a through groove, and the first disc body 1 is provided with a plurality of first arc-shaped grooves corresponding one-to-one with the first ball bearing grooves 32. Parts of the first ball bearing 33 extend into the corresponding first arc-shaped groove.

[0037] Conventionally, the first disc 1 is located at the lower end of the second disc 2, and the upper surface of the second disc 2 is used for contact with the user. Of course, the exercise disc can also be inverted so that the second disc 2 is located at the lower end of the first disc 1, in which case the upper surface of the first disc 1 is used for contact with the user.

[0038] When the limiting shaft 5 is inserted into the shaft hole 211, the second disc 2 can rotate around the limiting shaft 5. The user can stand or sit on the second disc 2 and twist their body left and right to exercise the oblique muscles and hip joints, meeting the core training needs. When the limiting shaft 5 is separated from the shaft hole 211, the circular plate 21 can move laterally within the limiting ring 4. The user can sit on the second disc 2 and make the buttocks make circular movements to promote blood circulation in the buttocks and meet the micro-movement shaping needs.

[0039] Example 2: Figure 3 , Figure 4 , Figure 6 and Figure 8 As shown, the rest of the components are the same as in Embodiment 1, except that the first disc body 1 includes a mounting base 11 with an opening at the top and a cover 12 covering the opening. The mounting base 11 and the cover 12 cooperate to form a mounting cavity 13. The ball bearing disc 3, the limiting ring 4, and the circular plate 21 are all located within the mounting cavity 13. The limiting ring 4 is fixedly connected to the cover 12 or the mounting base 11. The center of the cover 12 has a first through hole 121. The upper end of the circular plate 21 is connected to the second disc body 2 through a connector 212 passing through the first through hole 121. The connector 212 is cylindrical or annular, and its diameter is smaller than the diameter of the first through hole 121. The connector 212 is integrally formed with the shaft hole 211 and is coaxially arranged. The ball bearing disc 3 is detachably connected to the mounting base 11.

[0040] Furthermore, let the inner diameter of the limiting ring 4 be L1, the diameter of the circular plate 21 be L2, the diameter of the first through hole 121 be L3, and the diameter of the connector 212 be L4, satisfying: L1 > L2 > L3 > L4, and L1 - L3 < L2 - L4. By defining specific dimensional relationships, the circular plate 21 is always confined within the limiting ring 4, preventing the circular plate 21 from detaching from the limiting ring 4, and simultaneously preventing the connector 212 from colliding with the inner wall of the first through hole 121, thus ensuring good reliability.

[0041] Example 3: Figures 3 to 6 As shown, the rest of the components are the same as in Embodiment 2, except that the limiting ring 4 is fixedly disposed at the lower end of the upper cover 12, and a first support ring 111 is fixedly disposed inside the mounting base 11. The first support ring 111 is sleeved on the outside of the limiting ring 4, and the first support ring 111 is connected to the inner wall of the mounting base 11 by a first reinforcing rib 112. A second support ring 122 is fixedly disposed at the lower end of the upper cover 12, and the second support ring 122 is sleeved on the outside of the first support ring 111. The second support ring 122 is connected to the edge of the upper cover 12 by a second reinforcing rib 123. This structure adopts a double support ring and reinforcing rib design, which not only helps to improve the overall structural strength of the first disc 1, but also helps to improve the structural strength of the limiting ring 4, making it less prone to deformation when in contact with the circular plate 21, thus helping to extend its service life.

[0042] Example 4: Figure 3 , Figure 9 and Figure 10As shown, the rest is the same as in Embodiment 2, except that the upper cover 12 is provided with a plurality of second ball grooves 124, which penetrate the upper and lower end faces of the upper cover 12. Second balls 125 are disposed within the second ball grooves 124. A seat ring 117 is disposed within the mounting base 11, and the seat ring 117 is provided with second arc-shaped grooves 1171 corresponding one-to-one with the plurality of second ball grooves 124. The lower part of the second ball 125 extends into the corresponding second arc-shaped groove 1171, and the upper part of the second ball 125 extends out of the second ball groove 124 and contacts the second disc body 2. This structure, by providing second balls 125 on the upper cover 12, allows the upper cover 2 to also be used as a ball disc, sharing part of the load, and simultaneously helping to improve the stability of the second disc body 2 during sliding and rotation.

[0043] Example 5: Figure 6 , Figure 7 , Figures 11 to 13 As shown, the rest of the parts are the same as in Embodiment 2, except that the lower end of the mounting base 11 is provided with a mounting hole 113, the limiting shaft 5 and the pusher 6 are both provided at the mounting hole 113, and the ball bearing 3 is provided with a through hole 34 coaxial with the mounting hole 113.

[0044] In this embodiment, the inner wall of the mounting hole 113 extends inward to form an inner convex ring 114. A sleeve 115 and a cap 116 fitted onto the sleeve 115 are fixedly disposed at the upper end of the inner convex ring 114. An annular cavity is formed between the upper end of the sleeve 115 and the inner top surface of the cap 116. A deep groove 1151 and a shallow groove 1152 are provided at the upper end of the sleeve 115. The deep groove 1151 and the shallow groove 1152 respectively penetrate the inner and outer sides of the sleeve 115. A second through hole 1161 coaxial with the through opening 34 is provided on the inner top surface of the cap 116. Preferably, the inner convex ring 114 is located at the lower end face of the inner wall of the mounting hole 113. The lower end of the sleeve 115 is fixedly connected to the inner ring of the inner convex ring 114. The cap 116 is detachably connected to the mounting base 11.

[0045] In this embodiment, the pusher 6 includes a knob 61. A lug 62 extending into the annular cavity is fixedly provided on the side of the knob 61. The knob 61 is movably disposed within the sleeve 115, allowing it to rotate and move up and down. The lower end of the limiting shaft 5 is connected to the knob 61. When the lug 62 extends into the deep groove 1151, the upper end of the limiting shaft 5 extends into the second through hole 1161. When the lug 62 extends into the shallow groove 1152, the upper end of the limiting shaft 5 passes through the second through hole 1161 and extends into the shaft hole 211. Preferably, two lugs 62 are provided, and correspondingly, two deep grooves 1151 and two shallow grooves 1152 are provided.

[0046] Furthermore, the upper end of the knob 61 is provided with a slot 611, an annular groove 612, and a compression spring 63. The lower end of the limiting shaft 5 is inserted into the slot 611, the annular groove 612 surrounds the slot 611, the lower end of the compression spring 63 extends into the annular groove 612, and the upper end of the compression spring 63 abuts against the inner top surface of the cover 116. In this structure, the compression spring 63 provides downward pressure to ensure that the lug 62 is stably engaged in the deep groove 1151 or the shallow groove 1152.

[0047] When it is necessary to separate the limiting shaft 5 from the shaft hole 211, the user pushes the knob 61 upwards to disengage the lug 62 from the shallow groove 1152 and move it into the annular cavity. Then, the user rotates the knob 61 to move the lug 62 directly above the deep groove 1151. Finally, the user releases the knob 61, and the knob 61 and the lug 62 move downwards simultaneously, with the lug 62 extending into the deep groove 1151. When it is necessary to pass the limiting shaft 5 through the second through hole 1161 and the through opening 34 and insert it into the shaft hole 211, the user pushes the knob 61 upwards to disengage the lug 62 from the deep groove 1151 and move it into the annular cavity. Then, the user rotates the knob 61 to move the lug 62 directly above the shallow groove 1152. Finally, the user releases the knob 61, and the knob 61 and the lug 62 move downwards simultaneously, with the lug 62 extending into the shallow groove 1152.

[0048] Example 6: Figure 12 and Figure 14 As shown, the rest of the parts are the same as in Embodiment 5, except that a positioning block 1153 is fixedly provided on the outer side of the sleeve 115, and a positioning notch 1162 is provided at the lower end of the cover 116. The positioning block 1153 is inserted into the positioning notch 1162. A guide block 1163 and a limiting block 1164 are fixedly provided on the inner side of the cover 116. The guide block 1163 is located above the deep groove 1151. The side of the guide block 1163 facing the deep groove 1151 is provided with an inclined guide surface. The limiting block 1164 is located on the side of the shallow groove 1152 away from the deep groove 1151. The distance between the limiting block 1164 and the upper end face of the sleeve 115 is less than the height of the lug 62. In this structure, the positioning block 1153 cooperates with the positioning notch 1162 to ensure that the cover 116 is assembled to the outside of the sleeve 115 at a specified angle, so that the guide block 1163 is aligned with the deep groove 1151 and the limiting block 1164 is aligned with the shallow groove 1152. The setting of the guide block 1163 and the limiting block 1164 makes it convenient for the user to rotate the knob 61 in a specified direction to quickly switch training modes, while avoiding excessive rotation of the knob 61.

[0049] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the implementation of the present invention is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A multifunctional fitness disc, comprising a first disc body (1) and a second disc body (2) distributed vertically, characterized in that: The first disc body (1) is provided with a ball bearing disc (3), a limiting ring (4), a limiting shaft (5), and a pusher (6). The second disc body (2) is provided with a circular plate (21) at one end facing the first disc body (1). The circular plate (21) is provided with a shaft hole (211). The circular plate (21) is slidably engaged with the ball bearing disc (3). The limiting ring (4) is arranged around the outside of the circular plate (21) and the ball bearing disc (3). The diameter of the circular plate (21) is smaller than the inner diameter of the limiting ring (4). The limiting shaft (5) is slidably engaged with the first disc body (1). The pusher (6) is used to drive the limiting shaft (5) to be inserted into the shaft hole (211) or separated from the shaft hole (211).

2. The multifunctional fitness tray according to claim 1, characterized in that: The first disc body (1) includes a mounting base (11) with an opening at the top and an upper cover (12) covering the opening. The mounting base (11) and the upper cover (12) cooperate to form a mounting cavity (13). The ball bearing disc (3), the limiting ring (4), and the circular plate (21) are all located in the mounting cavity (13). The limiting ring (4) is fixedly connected to the upper cover (12) or the mounting base (11). The upper cover (12) has a first through hole (121) at its center. The upper end of the circular plate (21) is connected to the second disc body (2) through a connector (212) that passes through the first through hole (121). The diameter of the connector (212) is smaller than the diameter of the first through hole (121).

3. A multifunctional fitness tray according to claim 2, characterized in that: Let the inner diameter of the limiting ring (4) be L1, the diameter of the circular plate (21) be L2, the diameter of the first through hole (121) be L3, and the diameter of the connector (212) be L4, satisfying: L1 > L2 > L3 > L4, and L1 - L3 < L2 - L4.

4. A multifunctional fitness tray according to claim 2, characterized in that: The limiting ring (4) is fixedly disposed at the lower end of the upper cover (12), and a first support ring (111) is fixedly disposed inside the mounting base (11). The first support ring (111) is sleeved on the outside of the limiting ring (4), and the first support ring (111) is connected to the inner wall of the mounting base (11) by a first reinforcing rib (112). The lower end of the upper cover (12) is fixedly provided with a second support ring (122), which is sleeved on the outside of the first support ring (111). The second support ring (122) is connected to the edge of the upper cover (12) by a second reinforcing rib (123).

5. A multifunctional fitness tray according to claim 2, characterized in that: The upper cover (12) is provided with a plurality of second ball grooves (124), the second ball grooves (124) penetrate the upper and lower end faces of the upper cover (12), and a second ball (125) is provided in the second ball groove (124). A seat ring (117) is provided in the mounting base (11), and a plurality of second arc-shaped grooves (1171) are provided on the seat ring (117) corresponding one-to-one with the second ball grooves (124). The lower part of the second ball (125) extends into the corresponding second arc-shaped groove (1171), and the upper part of the second ball (125) extends out of the second ball groove (124) and contacts the second disc (2).

6. A multifunctional fitness tray according to claim 2, characterized in that: The lower end of the mounting base (11) is provided with a mounting hole (113), the limiting shaft (5) and the pushing member (6) are both provided at the mounting hole (113), and the ball bearing plate (3) is provided with a through hole (34) coaxial with the mounting hole (113).

7. A multifunctional fitness tray according to claim 6, characterized in that: The inner wall of the mounting hole (113) extends inward to form an inner convex ring (114). A sleeve (115) and a cover (116) fitted on the sleeve (115) are fixedly provided at the upper end of the inner convex ring (114). An annular cavity is formed between the upper end of the sleeve (115) and the inner top surface of the cover (116). A deep groove (1151) and a shallow groove (1152) are provided at the upper end of the sleeve (115). A second through hole (1161) coaxial with the through opening (34) is provided on the inner top surface of the cover (116). The pusher (6) includes a knob (61). The knob (61) has a lug (62) fixedly provided on its side, which extends into the annular cavity. The knob (61) is movably disposed in the sleeve (115). The lower end of the limiting shaft (5) is connected to the knob (61). When the lug (62) extends into the deep groove (1151), the upper end of the limiting shaft (5) extends into the second through hole (1161). When the lug (62) extends into the shallow groove (1152), the upper end of the limiting shaft (5) passes through the second through hole (1161) and extends into the shaft hole (211).

8. A multifunctional fitness tray according to claim 7, characterized in that: The upper end of the knob (61) is provided with a slot (611), an annular groove (612) and a compression spring (63). The lower end of the limiting shaft (5) is inserted into the slot (611). The annular groove (612) is arranged around the slot (611). The lower end of the compression spring (63) extends into the annular groove (612). The upper end of the compression spring (63) abuts against the inner top surface of the cover (116).

9. A multifunctional fitness tray according to claim 7, characterized in that: A positioning block (1153) is fixedly provided on the outer side of the sleeve (115), and a positioning notch (1162) is provided at the lower end of the cover (116). The positioning block (1153) is inserted into the positioning notch (1162). A guide block (1163) and a limiting block (1164) are fixedly provided on the inner side of the cover (116). The guide block (1163) is located above the deep groove (1151), and the guide block (1163) has an inclined guide surface on the side facing the deep groove (1151). The limiting block (1164) is located on the side of the shallow groove (1152) away from the deep groove (1151). The distance between the limiting block (1164) and the upper end face of the sleeve (115) is less than the height of the lug (62).

10. A multifunctional fitness tray according to claim 1, characterized in that: The ball bearing plate (3) includes a ball bearing frame (31), on which a plurality of first balls (33) are disposed, and the circular plate (21) is in contact with the first balls (33).

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