Adjustable dumbbell adjusted through base

Abstract

The invention provides an adjustable dumbbell adjusted through a base. The adjustable dumbbell comprises a dumbbell body, the base and dumbbell pieces. The dumbbell pieces are divided into two groups and are arranged on the base at intervals along the length direction of the base; a driving piece and a rotating piece driven by the driving piece are arranged on the base; the dumbbell body is provided with a telescopic rod; the dumbbell pieces are provided with channels allowing the telescopic rods to penetrate through, and the telescopic rods stretch out and draw back to change the length so as to change the number of the dumbbell pieces connected with the telescopic rods. A locking piece used for being connected with the dumbbell piece is arranged at the tail end of the telescopic rod, and when the dumbbell body is not arranged on the base, the locking piece is located at the first position and abuts against the inner wall of the channel; when the dumbbell body is arranged on the base, the locking piece abuts against the rotating piece and moves to the second position to be separated from the inner wall of the channel.

Description

Technical Field

[0001] The invention relates to a fitness tool, in particular to a dumbbell. Background Art

[0002] With the improvement of living standards, people pay more and more attention to bodybuilding and body shape. Dumbbells are the most commonly used fitness equipment for bodybuilding and body shape training and are very popular. Traditional dumbbells are one-piece, so the weight cannot be changed. In order to meet the training requirements of different stages, multiple dumbbells of different weights must be purchased, which has problems such as high purchase cost and inconvenient storage. The existing dumbbells include a dumbbell bar and multiple weight plates mounted on both ends of the dumbbell bar. The weight plates need to be assembled to the main shaft one by one to adjust the weight. The weight adjustment is inconvenient. The weight of the dumbbell needs to be calculated by the weight plate one by one, which cannot be obtained intuitively, and the user experience is poor.

[0003] Generally speaking, an adjustable weight dumbbell includes a dumbbell handle having two ends adapted to receive one or more weight plates and may further include means for locking and securing the weight plates in place for safe use. There are many types of adjustable weight dumbbells on the market.

[0004] For example, please refer to US200405969A, which teaches a device in which adjustment mechanisms need to be provided at both ends of the dumbbell handle so as to bolt the relevant dumbbell plates. This is inconvenient because two separate actions are required.

[0005] You can also refer to US20070184945A, which adopts the left-right thread theory to avoid the above defects. The bolt at the end of the dumbbell can be moved by turning the dial so that the bolt fixes the dumbbell plate of the required weight. However, since the adjustment mechanism is set on the dumbbell handle, once the dumbbell falls during the exercise, the adjustment mechanism will be damaged, and the entire dumbbell will be scrapped. Summary of the invention

[0006] The main technical problem to be solved by the present invention is to provide an adjustable dumbbell, wherein the weight of the dumbbell can be adjusted through a base, so that even if the dumbbell falls accidentally, the weight adjustment function will not be damaged.

[0007] In order to solve the above technical problems, the present invention provides an adjustable dumbbell adjusted by a base, comprising: a dumbbell body, a base and dumbbell plates;

[0008] The dumbbell plates are divided into two groups and are arranged on the base at intervals along the length direction of the base; the base is provided with a driving member and a rotating member driven by the driving member;

[0009] The dumbbell body has a telescopic rod, and the telescopic rod is matched with the rotating member through a reversing member to change the rotation of the rotating member into a translation of the telescopic rod along the telescopic direction;

[0010] The dumbbell plates have a passage for the telescopic rod to pass through, and the telescopic rod is telescoped to change its length so as to change the number of dumbbell plates connected to the telescopic rod;

[0011] A locking piece for connecting to a dumbbell plate is provided at the end of the telescopic rod. When the dumbbell body is not placed on the base, the locking piece is located at a first position and abuts against the inner wall of the channel; when the dumbbell body is placed on the base, the locking piece abuts against the rotating piece and moves to a second position to separate from the inner wall of the channel.

[0012] In a preferred embodiment, there are two telescopic rods, which are placed at both ends of the gripping handle and movably cooperate with the gripping handle along the length direction.

[0013] In a preferred embodiment: there are two locking members, and two slots for installing the locking members are provided at one end of the telescopic rod away from the gripping handle, and the distance between the two slots has a structure that gradually decreases from bottom to top, so that when the locking member moves from the first position to the second position, the width between the two locking members becomes smaller.

[0014] In a preferred embodiment, the outer side of the locking member protrudes outward along the width direction between the two locking members to form a protrusion that abuts against the inner wall of the channel.

[0015] In a preferred embodiment: a return spring is arranged between the locking member and the slot, and the return spring accumulates elastic return force during the movement of the locking member from the first position to the second position.

[0016] In a preferred embodiment: the base is provided with a limiting device cooperating with the locking member along the extension direction of the dumbbell plate, and the limiting device is provided with notches at intervals along the length direction; when the telescopic rod moves to a position corresponding to the locking member and the notch, the limiting device and the locking member release the limiting cooperation.

[0017] In a preferred embodiment, the notches correspond to the dumbbell pieces one by one.

[0018] In a preferred embodiment: two adjacent dumbbell plates are provided with male and female sockets for inserting the two dumbbell plates on the opposite sides, and the two dumbbell plates are formed into a one-way limit fit along the vertical direction downward through the male and female sockets.

[0019] In a preferred embodiment, the rotating member is a threaded rod, and the reversing member is a threaded groove arranged on the side of the threaded rod and a protrusion arranged at the bottom of the telescopic rod and used to be inserted into the threaded groove.

[0020] In a preferred embodiment, the driving member and the telescopic rod are linked together by a reduction gear set.

[0021] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0022] 1. The present invention provides an adjustable dumbbell that is adjusted through a base, and the weight of the dumbbell is adjusted through the base. Compared with the method of setting the adjustment mechanism on the inner side or both ends of the dumbbell handle, this solution is not likely to cause damage to the adjustment mechanism even if the dumbbell falls.

[0023] 2. The present invention provides an adjustable dumbbell that is adjusted through a base. Through a reversing member, a user can turn a knob to drive a telescopic rod to extend or shorten, thereby enabling the telescopic rod to carry different numbers of dumbbell plates, thereby achieving adjustment of the dumbbell weight.

[0024] 3. The present invention provides an adjustable dumbbell that is adjusted through a base. When the dumbbell body is not placed on the base, the locking member abuts and cooperates with the dumbbell plate on the dumbbell body, and the telescopic rod cannot be extended or retracted at this time, thereby ensuring safety. When the dumbbell body is placed on the base, the locking member is affected by the top force of the base and moves to the second position, releasing the abutment and cooperation with the dumbbell plate, and the telescopic rod can be freely extended or retracted.

[0025] 4. The present invention provides an adjustable dumbbell that is adjusted by a base. A limiting device is also provided on the base. When the telescopic rod is not moved to a position that cooperates with the dumbbell plates, the limiting device will cooperate with the locking member, and the dumbbell body cannot be removed from the base. When the telescopic rod is moved to a position that cooperates with the dumbbell plates, the opening on the limiting device will be aligned with the locking member so that the locking member and the limiting device are released from the limiting cooperation, allowing the dumbbell body to be removed from the base. In this way, it can be ensured that the dumbbell body and the dumbbell plates are in a state of stable connection before the dumbbell body can be removed for use, thereby ensuring safety.

[0026] 5. The present invention provides an adjustable dumbbell that is adjusted through a base, and the dumbbell plates are formed with a one-way limit fit downward in the vertical direction through male and female sockets, so that when the dumbbell body is lifted, the part of the dumbbell plates connected to the telescopic rod can be separated from the remaining dumbbell plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional diagram of a dumbbell body installed on a base in a preferred embodiment of the present invention;

[0028] Figure 2 It is a three-dimensional diagram of the dumbbell body and the base when they are separated in the preferred embodiment of the present invention;

[0029] Figure 3 An exploded view of a preferred embodiment of the present invention;

[0030] Figure 4 for Figure 3 Further exploded diagram of;

[0031] Figure 5 for Figure 4 A partial enlarged view of

[0032] Figure 6 A top view of a dumbbell body installed on a base in a preferred embodiment of the present invention;

[0033] Figure 7 for Figure 6 Section view at position AA;

[0034] Figure 8 It is a front view of a dumbbell body installed on a base in a preferred embodiment of the present invention;

[0035] Fig. 9 for Figure 8 Cross-sectional view at BB position;

[0036] Fig.10 for Fig. 9 A partial enlarged view of

[0037] Fig.11 This is a schematic diagram of a dumbbell body after being installed and separated from the base in a preferred embodiment of the present invention;

[0038] Fig.12 for Fig.10 Cross-sectional view at CC position;

[0039] Fig.13 for Fig.12 A partial enlarged view of

[0040] Fig.14 It is a three-dimensional diagram of the dumbbell body in the preferred embodiment of the present invention when it is not adjusted into place;

[0041] Fig.15 This is a schematic diagram of the dumbbell body in a preferred embodiment of the present invention when it is not adjusted into place;

[0042] Fig.16 for Fig.15 Cross-sectional view at DD position;

[0043] Fig.17 for Fig.16 A partial enlarged view of

[0044] Fig.18 It is a three-dimensional diagram of the dumbbell body when it is adjusted into place in the preferred embodiment of the present invention;

[0045] Fig.19 This is a schematic diagram of a dumbbell body when it is adjusted into place in a preferred embodiment of the present invention;

[0046] Fig. 20 for Fig.19 Cross-sectional view at EE position;

[0047] Fig.21 for Fig. 20 A partial enlarged view of

[0048] Fig. 22 It is a schematic diagram of the linkage between the driving member and the telescopic rod in a preferred embodiment of the present invention;

[0049] Fig.23 for Fig. 22 Cross-sectional view at FF position. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0051] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0052] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] refer to Figure 1-Figure 12, this embodiment provides an adjustable dumbbell adjusted by a base, comprising: a dumbbell body 1, a base 2 and a dumbbell plate 3;

[0054] The dumbbell pieces 3 are divided into two groups and are arranged on the base 2 at intervals along the length direction of the base 2; the base 2 is provided with a driving member 21 and a rotating member 22 driven by the driving member 21; a space for placing the dumbbell body 1 is formed between the two groups of dumbbell pieces 3. In this embodiment, the two groups of dumbbell pieces 3 are respectively plugged into each other through male and female sockets, so that the two dumbbell pieces 3 form a one-way limit fit downward along the vertical direction through the male and female sockets 31, 32. In addition, the dumbbell body 1 itself is provided with a dumbbell piece 3 at both ends of the gripping handle. When the dumbbell body 1 is placed between the two groups of dumbbell pieces 3, the dumbbell pieces 3 at both ends of the dumbbell body 1 are also connected with the dumbbell pieces 3 on the base 2 through the male and female sockets 31, 32.

[0055] The dumbbell body 1 has a telescopic rod 11, and the telescopic rod 11 is matched with the rotating member 22 through a reversing member to change the rotation of the rotating member 22 to the translation of the telescopic rod 11 along the telescopic direction; the dumbbell pieces 3 have a channel 33 for the telescopic rod 11 to pass through, and the telescopic rod 11 is extended and retracted to change the length so as to change the number of dumbbell pieces 3 connected to the telescopic rod 11; because the dumbbell pieces 3 are matched with each other in a one-way limit, when the user pulls up the dumbbell body 1 in the vertical direction, the part of the dumbbell pieces 3 connected to the telescopic rod 11 can be separated from the remaining dumbbell pieces 3.

[0056] In order to make the dumbbell body 1 cooperate with different numbers of dumbbell pieces 3, the end of the telescopic rod 11 is provided with a locking member 13 for connecting with the dumbbell pieces 3. When the dumbbell body 1 is not placed on the base 2, the locking member 13 is located at the first position and abuts against the inner wall of the channel 33, so as to abut and cooperate with the outermost dumbbell piece 3, and the dumbbell pieces 3 on the inner side are plugged by the male and female sockets 31 and 32, so that all the dumbbell pieces 3 are connected to the telescopic rod 11. At this time, the telescopic rod 11 is fixed in the current position and cannot be extended and retracted because of the structural limit formed by the abutment with the outermost dumbbell piece 3, thereby ensuring safety. When the dumbbell body 1 is placed on the base 2, the locking member 13 abuts against the rotating member 22 and moves to the second position to separate from the inner wall of the channel 33. At this time, the abutment relationship between the telescopic rod 11 and the dumbbell piece 3 is released, and the telescopic rod 11 can move freely to adjust the number of dumbbell pieces 3 connected to the telescopic rod 11.

[0057] The above-mentioned adjustable dumbbell adjusted by the base adjusts the weight of the dumbbell through the base 2. Compared with the method of setting the adjustment mechanism on the inside or both ends of the dumbbell handle, this solution is not likely to cause damage to the adjustment mechanism even if the dumbbell falls.

[0058] In this embodiment, in order to cooperate with the dumbbell plates 3 on both sides of the dumbbell body 1, there are two telescopic rods 11, which are placed at both ends of the gripping handle 12 and movably cooperate with the gripping handle 12 along the length direction.

[0059] In order to achieve the abutment or separation of the locking piece 13 and the dumbbell plate 3, there are two locking pieces 13, and one end of the telescopic rod 11 away from the gripping handle 12 is provided with two slots 14 for installing the locking pieces 13 respectively, and the distance between the two slots 14 has a structure that gradually decreases from bottom to top, so that when the locking piece 13 moves from the first position to the second position, the width between the two locking pieces 13 becomes smaller.

[0060] Specifically, the slot 14 extends along the two hypotenuses of the isosceles triangle, one end of the locking member 13 is inserted into the slot 14, and the other end is exposed outside the slot 14 and protrudes outward along the width direction between the two locking members 13 to form a protrusion 131 that abuts against the inner wall of the channel 33.

[0061] Thus, when the two locking members 13 are located at the first position, the distance between the two protrusions 131 is the largest, and the two protrusions 131 abut against the inner wall of the channel 33. When the two locking members 13 are located at the second position, the distance between the two protrusions 131 becomes smaller, and the two protrusions 131 are separated from the inner wall of the channel 33.

[0062] In order to allow the locking member 13 to automatically return to the first position when the dumbbell body 1 is removed from the base 2, a return spring 132 is provided between the locking member 13 and the slot 14. During the movement of the locking member 13 from the first position to the second position, the return spring 132 accumulates elastic return force.

[0063] In addition, since the telescopic rod 11 does not necessarily move to the position corresponding to the dumbbell plate 3 during the movement, for example, the telescopic rod 11 moves between two dumbbell plates 3. At this time, if the user lifts the dumbbell body 1, the protrusion 131 of the locking member 13 will abut between the two dumbbell plates 3, which is very unsafe. Therefore, in order to ensure that the telescopic rod 11 moves to the position corresponding to the dumbbell plate 3, the dumbbell body 1 can be lifted. In this embodiment, the base 2 is provided with a limiting device 23 that cooperates with the locking member 13 along the extension direction of the dumbbell plate 3, and the limiting device 23 is provided with notches 232 corresponding to the dumbbell plates 3 at intervals along the length direction; when the telescopic rod 11 moves to the position corresponding to the locking member 13 and the notch 232, the limiting device 23 and the locking member 13 are released from the limiting cooperation.

[0064] Specifically, the limiting device 23 is a limiting block 231 arranged on both sides of the telescopic rod 11 in the telescopic direction. The locking member 13 also extends a connecting portion 133 downward from the bottom of the protrusion 131. The connecting portion 133 has a groove 134 for the limiting block 231 to be inserted. The notch 232 is formed between two adjacent limiting blocks 231. When the telescopic rod 11 is not moved into place, the limiting block 231 is placed in the groove 134 so that the limiting device 23 and the locking member 13 are limited and matched. When the telescopic rod 11 is moved into place, the limiting block 231 is removed from the groove 134 so that the limiting device 23 and the locking member 13 are released from the limited cooperation.

[0065] In this embodiment, the rotating member 22 is a threaded rod, and the reversing member is a thread groove 221 provided on the side of the threaded rod and a protrusion 111 provided at the bottom of the telescopic rod 11 and used to be inserted into the thread groove 221. When the threaded rod rotates, the cooperation between the thread groove 221 and the protrusion 111 can pull the telescopic rod 11 to extend or push the telescopic rod 11 to shorten. In addition, the driving member 21 and the telescopic rod 11 form a linkage cooperation through a reduction gear set. Specifically, a large gear 211 is connected to the driving member 21, and a small gear 222 is connected to the threaded tube. Because the number of teeth of the two gears is different, the pitch of the thread groove 221 on the threaded rod can be adjusted to the optimal state. The so-called optimal state is that when the threaded rod rotates, the force driving the telescopic rod 11 to move is greater than the radial force on the telescopic rod 11.

[0066] In this embodiment, the driving member 21 is a manually controlled knob. As a simple replacement, the manual control can also be upgraded to electric control. As long as the knob is replaced by a motor, the effect of automatically adjusting the weight of the dumbbell body 1 can be achieved.

[0067] The above is only a preferred specific implementation of the present invention, but the design concept of the present invention is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the present invention within the technical scope disclosed by the present invention shall be deemed to infringe the protection scope of the present invention.

Claims

1. An adjustable dumbbell adjusted by a base, characterized in that include: Dumbbell body, base and dumbbell plates; The dumbbell plates are divided into two groups and are arranged on the base at intervals along the length direction of the base; the base is provided with a driving member and a rotating member driven by the driving member; The dumbbell body has a telescopic rod; The dumbbell plates have a passage for the telescopic rod to pass through, and the telescopic rod is telescoped to change its length so as to change the number of dumbbell plates connected to the telescopic rod; The end of the telescopic rod is provided with a locking piece for connecting with a dumbbell plate, and when the dumbbell body is not placed on the base, the locking piece is located at a first position and abuts against the inner wall of the channel; When the dumbbell body is placed on the base, the locking member abuts against the rotating member and moves to a second position to separate from the inner wall of the channel.

2. An adjustable dumbbell adjusted by a base according to claim 1, characterized in that: There are two telescopic rods, which are respectively arranged at two ends of the gripping handle and movably cooperate with the gripping handle along the length direction.

3. The adjustable dumbbell according to claim 2, characterized in that: There are two locking members, and two slots for installing the locking members are provided at one end of the telescopic rod away from the gripping handle. The distance between the two slots has a structure that gradually decreases from bottom to top, so that when the locking member moves from the first position to the second position, the width between the two locking members becomes smaller.

4. The adjustable dumbbell adjusted by the base according to claim 3, characterized in that: The outer side of the locking piece protrudes outward along the width direction between the two locking pieces to form a protrusion that abuts against the inner wall of the channel.

5. The adjustable dumbbell adjusted by the base according to claim 3, characterized in that: A return spring is arranged between the locking member and the slot, and when the locking member moves from the first position to the second position, the return spring accumulates elastic return force.

6. The adjustable dumbbell adjusted by the base according to claim 1, characterized in that: The base is provided with a limiting device cooperating with the locking member along the extension direction of the dumbbell plate, and the limiting device is provided with notches at intervals along the length direction; when the telescopic rod moves to a position corresponding to the locking member and the notch, the limiting device and the locking member release the limiting cooperation.

7. An adjustable dumbbell adjusted by a base according to claim 6, characterized in that: The notches correspond to the dumbbell pieces one by one.

8. The adjustable dumbbell adjusted by the base according to claim 6, characterized in that: Two adjacent dumbbell plates are provided with male and female sockets for inserting the two dumbbell plates on the opposite sides, and the two dumbbell plates are formed into a one-way limited fit downward along the vertical direction through the male and female sockets.

9. The adjustable dumbbell adjusted by the base according to claim 1, characterized in that: The telescopic rod is matched with the rotating member through a reversing member to change the direction of the rotating member so as to change the rotation of the rotating member into the translation of the telescopic rod along the telescopic direction.

10. The adjustable dumbbell adjusted by the base according to claim 9, characterized in that: The rotating member is a threaded rod, and the reversing member is a threaded groove arranged on the side of the threaded rod and a convex block arranged at the bottom of the telescopic rod and used for inserting into the threaded groove.

11. The adjustable dumbbell adjusted by the base according to claim 1, characterized in that: The driving member and the telescopic rod are linked together by a reduction gear set.

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