Three-in-one fitness device

Abstract

The utility model provides a three-in-one fitness device which comprises a counter weight box which is of a box-shaped structure and can contain a counter weight body, and one end of the counter weight box is provided with a first installation position where a handle can be installed so that the fitness device can be used as a kettle-bell; a second mounting position capable of being connected with the rod-shaped holding piece is arranged in the center of the bottom of the counterweight box, so that the fitness device can be used as a dumbbell or a barbell; the balance weight box is adopted as a basic part, the handle, the short rod or the long rod can be selected to be installed according to the requirements of a user so as to facilitate kettle-bell, dumbbell or barbell fitness activities, the multifunctional fitness box has the advantage of being diversified in function, the box body and the box base are rapidly assembled through the locking device, and use is convenient. A user can conveniently and rapidly disassemble and assemble the box body and the box base, and the assembling speed when a dumbbell or a barbell is converted into a kettle-bell is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of fitness equipment, in particular to a three-in-one fitness device. Background Art

[0002] Dumbbells, kettlebells and barbells are all common fitness equipment. Long-term use can effectively train arm strength and chest muscles, and therefore they are favored by fitness enthusiasts. At present, a single dumbbell, kettlebell or barbell has the problems of fixed appearance and structure, single function, incompatibility of components and unadjustable weight.

[0003] In order to solve the above technical problems, the prior art also assembles dumbbells, kettlebells and barbells in different ways to meet their respective fitness needs. For example, Chinese utility model patent application number 201921294793.7 discloses a non-casting and assembleable multi-purpose kettlebell. However, in this solution, when dumbbells or barbells are needed for fitness, the spherical devices at both ends are in a state of constant weight, and the weight cannot be adjusted according to demand, resulting in failure to meet the user's fitness needs for different weights. For another example, Chinese utility model patent application number 201120551185.7 discloses a multifunctional combination kettlebell, which also uses a combination method to assemble different equipment. However, when the kettlebell is converted into a dumbbell, the two hemispheres on the outside of the kettlebell need to be disassembled, resulting in long assembly time and complicated disassembly and assembly, which is very inconvenient. Utility Model Content

[0004] The utility model provides a three-in-one fitness device to solve the problems of single function, inconvenient assembly and disassembly, and complicated weight adjustment of the existing fitness equipment mentioned in the above background technology.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A three-in-one fitness device comprises a weight box in a box-shaped structure and capable of containing a weight body inside, wherein one end of the weight box has a first mounting position capable of mounting a handle so that the fitness device can be used as a kettlebell; and a second mounting position capable of connecting a rod-shaped gripping piece is provided at the bottom center of the weight box so that the fitness device can be used as a dumbbell or a barbell.

[0007] Preferably, the counterweight box includes a box body and a box base that are detachably connected, a threaded rod is provided at the center position of the box base, the upper end of the threaded rod extends to a position above the box body, and a locking device is provided on the box body that can connect the threaded rod to lock the box body and the box base.

[0008] Preferably, the locking device includes a locking tongue arranged around the threaded rod, which can rotate around the center of the threaded rod and can move horizontally. The locking tongue is connected to the box body, and an annular groove is opened at the outer diameter position of the threaded rod. The end of the locking tongue can be inserted into the annular groove to realize the connection between the box body and the threaded rod.

[0009] Preferably, the locking device also includes a knob for driving the lock tongue to rotate around the center of the threaded rod. The knob is located above the box body and is threadedly connected to the box body. A limit plate connected to the knob is provided inside the box body. A lock body is installed between the limit plate and the knob. The lock tongue is slidably installed inside the lock body. When the knob is rotated, the lock tongue can be driven to rotate around the center of the threaded rod.

[0010] Preferably, the middle position of the upper end of the box body has an inwardly recessed step portion, the knob is located at the step portion and is connected to the internal thread on the step portion, and a downwardly protruding limiting convex strip is provided below the step portion, the limiting convex strip has a force-applying end tangent to the inner diameter of the step portion, and a force-releasing end away from the center hole of the step portion, and the force-applying end and the force-releasing end have a smooth transition, and the lock tongue can contact the force-applying end and the force-releasing end of the limiting convex strip in sequence during the rotation around the center of the box body, thereby realizing the horizontal movement of the lock tongue.

[0011] Preferably, the locking tongue has a driving end in contact with the limiting convex strip and a locking end away from the driving end, and the locking end can be inserted into the annular groove at the upper end of the threaded rod when it moves horizontally to the extreme position close to the center line of the box body.

[0012] Preferably, the box base includes a base lower cover and a base upper cover, the base lower cover and the base upper cover are connected by screws, the bottom of the threaded rod is connected to a positioning plate, the positioning plate is located between the base lower cover and the base upper cover, and the threaded rod passes through the base upper cover.

[0013] Preferably, the first installation positions are screw holes arranged on both sides of the counterweight box.

[0014] Preferably, the second mounting position is a connecting hole opened in the center of the lower cover of the base, and the connecting hole is a threaded hole.

[0015] Preferably, the rod-shaped holding member is a short rod, including a connecting rod, both ends of the connecting rod have limit heads that can be inserted into the limit holes inside the threaded rod to achieve synchronous rotation, both ends of the connecting rod have grooves arranged in a ring shape, and both ends of the connecting rod are equipped with rotatable locking nuts, and limit screws are installed in the radial position of the locking nut, and the limit screws extend into the groove. The locking nut is installed at the second installation position at the bottom of the counterweight box by threaded connection, and a holding rod is sleeved on the middle position of the connecting rod, and a center rod is installed at the center position of the connecting rod, and both ends of the center rod extend to the center position of the threaded rod.

[0016] Preferably, the rod-shaped gripping member further includes an extension rod connected to the short rod.

[0017] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0018] (1) The utility model adopts a weight box as a basic component, and a handle, a short rod or a long rod can be installed according to user needs to facilitate fitness activities with kettlebells, dumbbells or barbells, and has the advantage of diverse functions.

[0019] (2) The utility model adopts a locking device to realize the rapid assembly of the box body and the box base, which can facilitate users to quickly realize the disassembly and assembly of the box body and the box base. On the one hand, when converting from a dumbbell or a barbell to a kettlebell, the kettlebell can be assembled quickly to save time. On the other hand, when used as a dumbbell or a barbell, the box body can be quickly disassembled according to user needs, which has the advantage of convenient disassembly and assembly, and satisfies the user's need to eliminate the structure of the box body when performing dumbbell or barbell activities.

[0020] (3) The utility model sets the counterweight body on the threaded rod, which can facilitate the user to replace the number of counterweights and meet the user's fitness needs for different counterweights. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a three-dimensional counterweight box Figure 1 ;

[0022] Figure 2 The utility model is a three-dimensional counterweight box Figure 2 ;

[0023] Figure 3 This is an exploded view of the counterweight box of the utility model;

[0024] Figure 4 It is a cross-sectional view of the counterweight box of the utility model;

[0025] Figure 5 The three-dimensional box body of the utility model Figure 1 ;

[0026] Figure 6 The three-dimensional box body of the utility model Figure 2 ;

[0027] Figure 7 The explosion-proof locking device of the utility model Figure 1 ;

[0028] Figure 8 The explosion-proof locking device of the utility model Figure 2 ;

[0029] Fig. 9 The explosion of the box base of the utility model Figure 1 ;

[0030] Fig.10 The explosion of the box base of the utility model Figure 2 ;

[0031] Fig.11 A three-dimensional diagram of the threaded rod of the utility model

[0032] Fig.12 A three-dimensional cross-sectional view of the threaded rod of the utility model

[0033] Fig.13 A three-dimensional diagram of the utility model used as a kettlebell;

[0034] Fig.14 A three-dimensional diagram of the utility model used as a dumbbell;

[0035] Fig.15 A three-dimensional diagram of the utility model used as a barbell;

[0036] Fig.16 It is an exploded view of the short rod of the utility model.

[0037] in:

[0038] 1. Base cover; 101. Connecting hole; 2. Threaded rod; 201. Positioning plate; 2011. Slot; 202. Ring groove; 203. Limiting hole; 3. Base cover; 301. Groove; 302. Threaded column; 4. Counterweight; 5. Nut 1; 6. Nut 2; 601. Screw hole; 7. Box body; 701. Step; 702. Internal thread; 703. Limiting convex strip; 7031. Force application end; 7032. Release end; 8. Limit Position plate; 9. Spring; 10. Lock tongue; 1001. Drive end; 1002. Lock end; 11. Lock body; 1101. Baffle; 12. Knob; 1201. Upper shell; 1202. Lower shell; 13. Handle; 14. Short rod; 1401. Connecting rod; 1402. Groove; 1403. Limit head; 1404. Center rod; 1405. Lock nut; 1406. Limit screw; 1407. Grip; 15. Extension rod. DETAILED DESCRIPTION

[0039] The following is a further description of the embodiments of the present invention with reference to the accompanying drawings:

[0040] like Figure 1-16As shown, a three-in-one fitness device includes a weight box with a box-like structure and capable of containing a weight body 4 therein, one end of the weight box has a first installation position for installing a handle 13, so that the fitness device can be used as a kettlebell; specifically, the first installation position is a screw hole 601 arranged on both sides of the weight box. In this example, nuts 6 are fixed on both sides of the inside of the weight box, and the handle 13 can be installed to the screw hole 601 on the nut 6 by bolts, so that the handle 13 is installed on the weight box, and can be used as a kettlebell for fitness.

[0041] The center of the bottom of the weight box has a second mounting position that can be connected to a rod-shaped grip so that the fitness device can be used as a dumbbell or a barbell, wherein the second mounting position is a connecting hole 101 opened in the center of the base lower cover 1, and the connecting hole 101 is a threaded hole.

[0042] Specifically, the counterweight box includes a box body 7, a box base, a threaded rod 2 and a locking device. The box body 7 is located above the box base, and the threaded rod 2 is installed on the box base and the upper end extends above the box body 7. The counterweight body 4 can be sleeved on the outside of the threaded rod 2 and locked by a nut 5. By changing the number of counterweight bodies 4, the overall counterweight of the fitness device can be changed. The counterweight body 4 is locked by a nut 5, and a rubber pad is provided between the nut 5 and the uppermost counterweight body 4 to avoid the counterweight body 4 from shaking inside the box body 7. The locking device is located at the upper end of the box body 7 and is connected to the threaded rod 2 to achieve the connection between the box body 7 and the box base; more specifically, one side surface of the counterweight body 4 has a raised cylindrical bump, and the other side surface has a concave groove at a position corresponding to the cylindrical bump, and the cylindrical bump can be inserted into the groove, so that the problem of relative rotation between two adjacent counterweight bodies 4 can be avoided, and the assembly stability of the counterweight 4 can be further improved.

[0043] Specifically, the box base includes a base lower cover 1 and a base upper cover 3, the base lower cover 1 and the base upper cover 3 are connected by screws, and a positioning plate 201 is connected to the bottom of the threaded rod 2, the positioning plate 201 is located between the base lower cover 1 and the base upper cover 3, and the threaded rod 2 passes through the base upper cover 3. More specifically, the threaded rod 2 is integrally connected with the positioning plate 201 below, and the positioning plate 201 can be placed in a groove 301 at the center position below the base upper cover 3, and a threaded column 302 for connecting the base lower cover 1 is provided at the edge position of the groove 301, and a card groove 2011 matching the threaded column 302 is provided at the edge position of the positioning plate 201, and the card groove 2011 is limited The rotation of the positioning plate 201 relative to the base upper cover 3 is limited by the card groove 201, so that the threaded rod 2 only has the freedom of axial movement in the groove 301, and the threaded rod 2 can be fixed after the base lower cover 1 and the base upper cover 3 are connected by screws.

[0044] Specifically, the locking device includes a knob 12 located above the box body 7, the knob 12 includes an upper shell 1201 and a lower shell 1202, the upper shell 1201 and the lower shell 1202 are synchronously rotatably connected, the lower end of the knob 12 is connected to a lock body 11, in this example, the lock body 11 is integrally connected to the bottom of the lower shell 1202, and a lock tongue 10 that can move in the horizontal direction is provided in the lock body 11. In this example, the number of the lock body 11 and the lock tongue 10 are both two, and they are evenly distributed around the center of the knob 12, so as to improve the working performance during locking; the knob 12 The lower end is also connected to a limit plate 8, which is located inside the box body 7. More specifically, one side of the lock body 11 has a baffle 1101. After the lock tongue 10 is placed inside the lock body 11, a spring 9 is provided between the baffle 1101 and the lock tongue 10. One end of the spring 9 contacts the step in the middle of the lock tongue 10, and the other end abuts against the inner side surface of the baffle 1101. The inner end of the lock tongue 10 passes through the small hole on the baffle 1101 and can be inserted into the annular groove 202 of the threaded rod 2. When the lock tongue 10 is in a free state, the spring 9 drives the lock tongue 10 to the external limit position.

[0045] Specifically, the middle position of the upper end of the box body 7 has an inwardly recessed step portion 701, the edge of the step portion 701 is provided with an internal thread 702 connected to the knob 12 (upper shell 1201), and a downwardly protruding limiting convex strip 703 is provided below the step portion 701. The limiting convex strip 703 has a force-applying end 7031 tangent to the inner diameter of the step portion 701, and a loose force end 7032 away from the center hole of the step portion 701. The force-applying end 7031 and the loose force end 7032 have a smooth transition, and the lock tongue 1 In the process of rotating around the center of the box body 7, the force-applying end 7031 and the force-releasing end 7032 of the limiting convex strip 703 can be contacted in sequence, thereby realizing the horizontal movement of the lock tongue 10. The lock tongue 10 has a driving end 1001 in contact with the limiting convex strip 703 and a locking end 1002 away from the driving end 1001. When the locking end 1002 moves horizontally to the extreme position close to the center line of the box body 7, it can be stuck in the annular groove 202 at the upper end of the threaded rod 2 to achieve the locking effect of the threaded rod 2.

[0046] Among them, the limiting plate 8 is connected to the knob 12 by bolts. Specifically, the limiting plate 8, the lower shell 1202 and the upper shell 1201 are connected by bolts to achieve synchronous rotation connection of the three. The limiting plate 8 is located below the step portion 701, which can further prevent the lock body 11 and the lock tongue 10 from moving in the vertical direction, and also prevent the knob 12 from detaching from the box body 7. When the knob 12 is rotated, the knob 12 cooperates with the internal thread 702 on the one hand to achieve the connection between the knob 12 and the box body 7, and on the other hand drives the lock body 11, the lock tongue 10 and the limiting plate 8 to rotate. During the rotation process, the driving end 1001 of the lock tongue 10 gradually approaches the force-applying end 7031 of the limiting convex strip 703, so that The lock tongue 10 moves horizontally toward the center direction of the box body 7. When it reaches the extreme position, the locking end 1002 of the lock tongue 10 can be stuck in the annular groove 202 on the threaded rod 2, thereby locking the threaded rod 2 and completing the connection between the box body 7 and the box base. When rotated in the opposite direction, the knob 12 cooperates with the internal thread 702 to separate from the box body 7. On the other hand, under the action of the spring 9, the lock tongue 10 makes the driving end 1001 gradually approach the loose end 7032 of the limiting convex strip 703, so that the locking end 1002 of the lock tongue 10 is disengaged from the annular groove 202 on the threaded rod 2. At this time, the box body 7 is separated from the box base, and the user can replace the counterweight 4.

[0047] Specifically, the rod-shaped holding piece is a short rod 14, including a connecting rod 1401, and both ends of the connecting rod 1401 have limit heads 1403 that can be inserted into the internal limit holes 203 of the threaded rod 2 to achieve synchronous rotation, wherein the limit heads 1403 of the connecting rod 1401 and the limit holes 203 on the threaded rod 2 both have regular polyhedral structures in cross-section. More specifically, a regular octahedron is used in this example to avoid the problem of relative rotation of the connecting rod 1401 when it is inserted into the threaded rod 2.

[0048] Both ends of the connecting rod 1401 have annular grooves 1402, and rotatable locking nuts 1405 are installed at both ends of the connecting rod 1401. Limit screws 1406 are installed at radial positions of the locking nuts 1405, and the limit screws 1406 extend into the grooves 1402. The locking nuts 1405 are installed at the second installation position at the bottom of the counterweight box by threaded connection. In this way, the locking nuts 1405 can only have the freedom to rotate relative to the connecting rod 1401. When the locking nuts 1405 are connected to the second installation position at the bottom of the counterweight box, the connecting rod 1401 and the counterweight box can be connected. 101), a rubber ring is installed at the root position of the connecting rod 1401, which can make the locking nut 1405 close to the rubber ring during the locking process, so as to ensure a firm connection and prevent shaking; a grip rod 1407 is sleeved on the middle position of the connecting rod 1401, and a center rod 1404 is installed at the center position of the connecting rod 1401. Both ends of the center rod 1404 extend to the center position of the threaded rod 2. The center rod 1404 and the grip rod 1407 can be connected to the connecting rod 1401 in a fixed connection manner. The center rod 1404 plays a role of further guiding and reinforcing the short rod 14, and the grip rod 1407 protects the center rod 1404 and can be replaced after a period of use.

[0049] Specifically, the rod-shaped gripping member further includes an extension rod 15 connected to the short rod 14. The extension rod 15 is connected to the short rod 14 in a threaded manner, thereby further increasing the overall length of the rod-shaped gripping member, so that the fitness device can be used as a barbell.

[0050] This three-in-one fitness device has three functions:

[0051] (1) When used as a kettlebell, handles 13 are installed on both sides of the weight box by bolt connection, and the user can perform kettlebell fitness exercises by holding the handles 13;

[0052] (2) When used as a dumbbell, the handle 13 can be removed or not, and the dumbbell can be assembled by connecting a short rod 14 between two weight boxes. The user can hold the short rod 14 to perform dumbbell fitness. In addition, according to user needs, the box body 7 can be removed, and only the box base can be retained to expose the weight body 4 to meet user needs.

[0053] (3) When used as a barbell, the handle 13 can be removed or not, or the box body 7 can be removed or not. The length of the rod-shaped grip can be increased by adding an extension rod 15 between the two short rods 14 to perform barbell fitness exercises.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-in-one fitness device, characterized in that: The invention comprises a weight box having a box-shaped structure and capable of containing a weight body (4) therein; one end of the weight box has a first mounting position capable of mounting a handle (13) so that the fitness device can be used as a kettlebell; and the bottom center of the weight box has a second mounting position capable of connecting a rod-shaped gripping member so that the fitness device can be used as a dumbbell or a barbell.

2. A three-in-one fitness device according to claim 1, characterized in that: The counterweight box comprises a detachably connected box body (7) and a box base, a threaded rod (2) is provided at the center of the box base, the upper end of the threaded rod (2) extends to a position above the box body (7), and a locking device is provided on the box body (7) that can connect the threaded rod (2) to lock the box body (7) and the box base.

3. A three-in-one fitness device according to claim 2, characterized in that: The locking device comprises a locking tongue (10) arranged around the threaded rod (2), which can rotate around the center of the threaded rod (2) and can move horizontally. The locking tongue (10) is connected to the box body (7). An annular groove (202) is provided at the outer diameter position of the threaded rod (2). The end of the locking tongue (10) can be inserted into the annular groove (202) to achieve the connection between the box body (7) and the threaded rod (2).

4. A three-in-one fitness device according to claim 3, characterized in that: The locking device further comprises a knob (12) for driving the lock tongue (10) to rotate around the center of the threaded rod (2); the knob (12) is located above the box body (7) and is threadedly connected to the box body (7); a limit plate (8) connected to the knob (12) is provided inside the box body (7); a lock body (11) is installed between the limit plate (8) and the knob (12); the lock tongue (10) is slidably installed inside the lock body (11); when the knob (12) is rotated, the lock tongue (10) can be driven to rotate around the center of the threaded rod (2).

5. A three-in-one fitness device according to claim 4, characterized in that: The box body (7) has an inwardly recessed step portion (701) at the middle of the upper end thereof, the knob (12) is located at the step portion (701) and connected to the internal thread (702) on the step portion (701), a downwardly protruding limiting convex strip (703) is provided below the step portion (701), the limiting convex strip (703) has a force-applying end (7031) tangent to the inner diameter of the step portion (701), and a force-releasing end (7032) away from the center hole of the step portion (701), the force-applying end (7031) and the force-releasing end (7032) being smoothly transitioned, and the lock tongue (10) can sequentially contact the force-applying end (7031) and the force-releasing end (7032) of the limit convex strip (703) during the process of rotating around the center of the box body (7), thereby realizing the movement of the lock tongue (10) in the horizontal direction.

6. A three-in-one fitness device according to claim 5, characterized in that: The locking tongue (10) comprises a driving end (1001) in contact with the limiting convex strip (703) and a locking end (1002) away from the driving end (1001); the locking end (1002) can be inserted into the annular groove (202) at the upper end of the threaded rod (2) when the locking end (1002) moves horizontally to an extreme position close to the center line of the box body (7).

7. A three-in-one fitness device according to claim 2, characterized in that: The box base comprises a base lower cover (1) and a base upper cover (3), the base lower cover (1) and the base upper cover (3) are connected by screws, the bottom of the threaded rod (2) is connected to a positioning plate (201), the positioning plate (201) is located between the base lower cover (1) and the base upper cover (3), and the threaded rod (2) passes through the base upper cover (3).

8. A three-in-one fitness device according to claim 7, characterized in that: The first installation position is a screw hole (601) arranged on both sides of the counterweight box, and the second installation position is a connection hole (101) opened in the center of the base lower cover (1), and the connection hole (101) is a threaded hole.

9. A three-in-one fitness device according to claim 8, characterized in that: The rod-shaped gripping member is a short rod (14), comprising a connecting rod (1401), both ends of the connecting rod (1401) having limit heads (1403) capable of being inserted into the internal limit holes (203) of the threaded rod (2) to achieve synchronous rotation, and both ends of the connecting rod (1401) are provided with rotatable locking nuts (1405), which are installed at the second installation position at the bottom of the counterweight box by means of a threaded connection.

10. A three-in-one fitness device according to claim 9, characterized in that: The rod-shaped gripping member further comprises an extension rod (15) connected to the short rod (14).

Images