Side-adjustable dumbbells

Abstract

We provide a side-adjustable dumbbell with a structure that allows for adjustment of the dumbbell's length. [Solution] A side-adjustable dumbbell comprising a handle assembly and a plurality of weight plates located on both sides of the handle assembly, wherein the handle assembly comprises a handle body 107 and a support 108, and a fixed base plate 101 attached to both ends of the handle body and the support. The support is located below the handle body, and a sliding path 1081 is provided through the interior of the two long side edges of the support, and an adjustable slide rod 104 is provided slidably within the sliding path, and a relief hole 112 corresponding to the adjustable slide rod is provided in the fixed base plate, and the adjustable slide rod can be slid out of the sliding path and installed to pass through the relief hole.

Description

Technical Field

[0001] This utility model relates to the technical field of fitness equipment, and particularly to a kind of side-adjustable dumbbell with an adjustable structure.

Background Art

[0002] Among the fitness equipment in the prior art, the most commonly used equipment for arm strength training is the dumbbell. In order to adapt to different training intensities, usually, it is necessary to change the weight of the dumbbell through an adjustment structure. The currently commonly adopted adjustment structure is to increase or decrease the quantity of weight plates, and the mounting structure of the weight plates is generally an insertion type or a screwing type structure method. However, these two methods have the disadvantages that it takes time and effort to remove and assemble the weight plates, and it is inconvenient to use. Therefore, for the designers and developers of dumbbells, how to design and develop a mounting structure for weight plates that is more convenient for adjustment and use and also has both structural stability and use safety has become a technical problem to be solved currently.

Summary of the Invention

[0003] This invention relates to a side-adjustable dumbbell comprising a handle assembly and a plurality of weight plates located on both sides of the handle assembly. The handle assembly comprises a handle body and a support, and fixed base plates attached to both ends of the handle body and the support. The support is located below the handle body, and a sliding path is provided through the interior of the two long side edges of the support, and an adjustable sliding rod is provided within the sliding path so as to be slidable. The fixed base plate is provided with a relief hole corresponding to the adjustable sliding rod, and the adjustable sliding rod can be detached from the sliding path and installed so as to pass through the relief hole. This invention has a rational structural design and, by improving the structure of the dumbbell, a more stable product structure is constructed by connecting two sets of fixed base plates via the handle body and support. This prevents deformation during long-term use and also protects the hands, thus ensuring safety during use. [Problems that the invention aims to solve]

[0004] To address the shortcomings of conventional technology, the present invention provides a side-adjustable dumbbell that features an adjustable weight structure by improving the assembly structure of the dumbbell, offering advantages such as convenient adjustment and use, a stable structure, and safety. [Means for solving the problem]

[0005] The side-adjustable dumbbell comprises a handle assembly and a plurality of weight plates located on both sides of the handle assembly. Its features are as follows: The handle assembly includes a handle body, a support, and fixed base plates attached to both ends of the handle body and the support.

[0006] The side-adjustable dumbbell as described above, characterized in that the support is located below the handle body and has a flat rectangular parallelepiped structure, the two short sides of the support are each connected to the corresponding fixed base plate, a sliding channel is provided through the interior of the two long side edges of the support, and an adjustable sliding rod is provided slidably within the sliding channel, and a relief hole corresponding to the adjustable sliding rod is provided in the fixed base plate, the adjustable sliding rod can slide out of the sliding channel and be installed by passing through the relief hole.

[0007] A relief groove is provided in the center of the upper surface of the support, and is positioned parallel to the handle body. The relief groove is located directly below the handle body.

[0008] The inner surface of the fixed substrate is provided with positioning grooves that match the shapes of the handle body and the support, and the ends of the handle body or the support are inserted into the positioning grooves and connected and fixed to the fixed substrate.

[0009] The positioning groove is provided with a relief hole for the adjustment slide rod to pass through the fixed substrate.

[0010] The adjustment slide rod is provided with a set of elastic pin assemblies connected thereto, and the elastic pin assemblies are provided passing through the adjustment slide rod.

[0011] The support is characterized in that the side walls on both sides of the support are provided with operating ports distributed along the sliding direction of the adjustment slide rod, and the outer end of the elastic pin assembly is located within the operating port.

[0012] The inner wall of the slide channel is provided with a plurality of positioning holes corresponding to the elastic pin assembly, the positioning holes are distributed at equal intervals along the length of the adjustment slide rod, and the inner end of the elastic pin assembly is positioned to be inserted into and fixed in any set of the positioning holes.

[0013] The weight plate is provided with relief holes distributed in accordance with the adjustment slide rod. The relief holes are closed rectangular openings with the same vertical cross-sectional shape as the adjustment slide rod.

[0014] A sub-plate is further provided inside the fixed base plate, connected and fixed thereto. A semicircular opening is provided in the center of the bottom surface of the sub-plate, and the handle body is positioned within this opening and installed so as to be in close contact with the inner wall of the opening.

[0015] Furthermore, it is provided with a fixing base, which is located below the handle assembly and the weight plate, and the handle assembly and the weight plate are each housed within the fixing base. The fixing base includes a bottom base plate and an enclosure plate, the bottom base plate is located on the bottom surface, and the enclosure plate is formed by bending each of the four sides of the bottom base plate upward.

[0016] Furthermore, it includes spacers and positioning plates.

[0017] The spacers are located on both sides of the upper part of the bottom substrate, with the bottom surfaces of the spacers positioned on the bottom substrate and connected and fixed between them, and the weight piece is placed on the upper part of the spacers.

[0018] The stopper is located at both ends of the upper part of the bottom base plate, is positioned vertically, and is located inside the enclosure plate, the outer side wall of the stopper abuts against the inner wall of the enclosure plate, the bottom of the stopper is connected and fixed to the bottom base plate via mounting legs formed integrally with it, and the mounting legs are located in the gap between the spacer and the enclosure plate.

[0019] The positioning plate is located outside the corresponding weight plate, and the positioning plate is provided with a fitting groove corresponding to the weight plate. The insertion plate outside the weight plate is located within the fitting groove. [Effects of the Invention]

[0020] The beneficial effects of this utility model are as follows: The structural design is rational, and by improving the structure of the dumbbell, two sets of fixed base plates are connected by the handle body and support. The handle body is positioned in the center and the support at the bottom, and the combination structure of these two, along with the fixed base plates, creates a more stable product structure, preventing deformation during long-term use. At the same time, the relief groove provides sufficient space for the hand to use, making it convenient to use. Between the two sets of fixed base plates of the dumbbell, the support at the bottom protects the hand, ensuring safety during use.

[0021] Regarding the dumbbell's adjustment mechanism, by installing the adjustment slide rod inside the support located at the bottom, it eliminates the need to occupy extra space, and its position does not affect the contact between the hand and the handle body. When the adjustment slide rod slides and contacts the weight plate, the entire process takes place inside the support and weight plate, without being exposed to the outside. This not only ensures the stability of the connection between the adjustment slide rod and the weight plate, but also avoids the risk of the adjustment slide rod falling off its mounting point due to external exposure, and the safety risk of injuring the user. [Brief explanation of the drawing]

[0022] The utility model will be further described below based on the drawings and embodiments. [Figure 1] Figure 1 is a schematic structural diagram of the utility model. [Figure 2] Figure 2 is a schematic structural diagram of the utility model (in the state where the fixed pedestal is separated). [Figure 3] Figure 3 is a schematic structural diagram of the handle assembly. [Figure 4] Figure 4 is a schematic structural diagram of the handle assembly in the separated state. [Figure 5] Figure 5 is a schematic structural diagram of the handle assembly (in the state where the adjustment slide rod is separated). [Figure 6] Figure 6 is a schematic perspective structural diagram of the adjustment slide rod. [Figure 7] Figure 7 is a schematic front structural diagram of the adjustment slide rod. [Figure 8] Figure 8 is a schematic cross-sectional structural diagram of A-A in Figure 7. [Figure 9] Figure 9 is a schematic perspective structural diagram of the weight plate. [Figure 10] Figure 10 is a schematic side structural diagram of the handle assembly. [Figure 11] Figure 11 is a schematic cross-sectional structural diagram of B-B (different positions) in Figure 10. [Figure 12] Figure 12 is a schematic cross-sectional structural diagram of B-B (different positions) in Figure 10. [Figure 13] Figure 13 is a schematic cross-sectional structural diagram of B-B (different positions) in Figure 10. [Figure 14] Figure 14 is a schematic structural diagram of the utility model (in the state where the second weight plate is separated). [Figure 15] Figure 15 is a schematic structural diagram of the second weight plate in the separated state. [Figure 16] Figure 16 is a schematic structural diagram of the utility model in the usage state.

Modes for Carrying Out the Invention

[0023] The embodiments of this utility model will be described below with reference to specific examples. Those skilled in the art will readily understand the other advantages and effects of this utility model from the information disclosed herein.

[0024] As shown in Figures 1 to 16, this embodiment provides a side-adjustable dumbbell. The dumbbell comprises a handle assembly 100, a first weight plate 200, and a fixed base 300, with the handle assembly 100 and the first weight plate 200 each housed inside the fixed base 300. The handle assembly 100 is located in the center, and the first weight plate 200 consists of two sets, each located on either side, with 11 plates in each set. The number of weight plates in each set can be determined based on the product model and size. In the normal state, the handle assembly 100 and the first weight plate 200 are installed independently, but during use, the handle assembly 100 is movable and connected to some or all of the first weight plates 200, thereby enabling adjustment of the dumbbell weight. The specific implementation structure and operating principle of each component are as follows.

[0025] The handle assembly 100 comprises a fixed base plate 101, a handle body 107, a support 108, a second weight plate 400, and an adjustment slide rod 104. The fixed base plate 101 includes two sets, each positioned on either side of the handle body 107 and the support 108, and the first weight plate 200 is sequentially installed on the outside of the fixed base plate 101. Both ends of the handle body 107 and the support 108 are connected and fixed to the fixed base plate 101. Within the interior of both sides of the support 108, there are through-hole slide paths 1081, and the adjustment slide rod 104 is slidably installed within the slide paths 1081. Here:

[0026] The outer edge of the fixed substrate 101 is substantially the same as that of the first weight plate 200, but a difference is that notches are provided in the lower middle section on both the left and right sides of the fixed substrate 101. Positioning grooves are provided on the inner surface of the fixed substrate 101, which are installed and shaped to correspond to the handle body 107 and the support 108, respectively. A sub-plate 102 is further provided on the upper part of the inner surface of the fixed substrate 101 and connected thereto, and a pair of insertion plates 210 are provided on the upper outer part of the fixed substrate 101 and connected thereto.

[0027] The positioning grooves in the fixed base plate 101 structure described above include a second positioning groove 110 corresponding to the handle body 107 and a first positioning groove 109 installed corresponding to the support 108. The second positioning groove 110 is circular and corresponds to the end of the handle body 107, while the first positioning groove 109 is concave and corresponds to the support 108. During installation, it is necessary to insert the ends of the handle body 107 and the support 108 into their respective positioning grooves to achieve preliminary positioning, which facilitates reconnection and fixing with screws.

[0028] Furthermore, a first relief hole 112 with a through-hole structure is provided within the first positioning groove 109. The first relief hole 112 is for the adjustment slide rod 104 to pass through the fixed base plate 101, and by controlling the sliding distance of the adjustment slide rod 104, it becomes possible to contact one or more sets of first weight plates 200, thereby enabling weight adjustment of the product. The first relief hole 112 is a closed rectangular opening, which prevents the adjustment slide rod 104 from sliding down and separating inside the first relief hole 112, and also avoids contact with the hand, thus increasing safety during use. In this embodiment, two sets of first relief holes 112 are provided, distributed symmetrically, and the fixed base plate 101 is usable on both the left and right sides.

[0029] In the structure of the fixed base plate 101 described above, the left and right sides and the upper edge of the sub-plate 102 are aligned with the outer edge of the fixed base plate 101, and the sub-plate 102 and the fixed base plate 101 are connected and fixed by screws. The sub-plate 102 is approximately half the size of the fixed base plate 101, and a semicircular opening is provided in the center of the bottom surface of the sub-plate 102. The handle body 107 is located within this opening and is installed so as to be in close contact with the inner wall of the opening. In this structure, by installing the sub-plate 102 synchronously based on the fixed base plate 101, not only is the thickness and structural strength of the fixed base plate 101 increased, but uniform distribution of the force is achieved through contact between the sub-plate 102 and the handle body 107. That is, a portion of the force is transmitted directly to the connection point between the fixed base plate 101 and the handle body 101 through the connection point, and another portion of the force is transmitted through the sub-plate 102 to the connection point between the sub-plate 102 and the fixed base plate 101. As a result, the points of force are distributed, and the structure of the product becomes more stable.

[0030] The second weight plate 400 is located inside the sub-plate 102, and both the left and right sides and the upper edge of the second weight plate 400 are aligned with the outer edge of the fixed base plate 101. The bottom of the second weight plate 400 is set higher than the fixed base plate 101, and a U-shaped engagement opening 402 is provided in the center of the bottom of the second weight plate 400. The engagement opening 402 is set with its opening facing downward, and the handle body 107 is located inside the engagement opening 402 and is set to be in close contact with the inner wall of the engagement opening 402. An elastic pin unit connected to the second weight plate 400 is provided above its central position. The ends of the elastic pin unit are inserted into corresponding holes in the fixed base plate 101 and sub-plate 102, thereby fixing the position of the second weight plate 400. The elastic pin unit comprises an elastic pin shaft 103, a spring 105, a fastener 403, and a round cap 401. The spring 105 is mounted on the outside of the elastic pin shaft 103, and the end of the elastic pin shaft 103 is installed through the fixing device 403 and connected to the round cap 401. The fixing device 403 is installed and fixed on the second weight plate 400. In this structure, the elastic pin shaft 103 can be controlled to enter or leave the fixing base plate 101 and the sub-plate 102 by pulling or releasing the round cap 401, thereby enabling the installation or removal of the second weight plate 400 by movement. The second weight plate 400 is primarily intended to match the standard weight of the handle assembly, so that the second weight plate 400 and the handle assembly together constitute a relatively precise weight, and is used in combination with the first weight plate 200.

[0031] Annular positioning protrusions 111 are provided near both ends of the surface of the handle body 107. The positioning protrusions 111 contact the inner surface of the second weight plate 400. The positioning protrusions 111 are provided to position the mounting position of the second weight plate 400 during the assembly process, and at the same time to prevent the second weight plate 400 from entering the main usage area of ​​the handle body 107 and injuring the hands.

[0032] The support 108 has a flattened rectangular structure, its length is the same as the handle body 107, and its width is slightly smaller than the width of the fixed base plate 101. A relief groove 1084 is provided in the center of the top surface of the support 108, and is installed parallel to the handle body 107. The relief groove 1084 is located directly below the handle body 107, and when using the side-adjustable dumbbell with the hand, the hand is positioned just within the relief groove 1084, thus creating sufficient operating space and making it more convenient to use.

[0033] In the above-described combination structure of the fixed base plate 101, handle body 107, and support 108, the fixed base plates 101 are interconnected and integrated via the handle body 107 and support 108, forming the main structure of the handle assembly 100. By adding the support 108 to the conventional dumbbell structure, the dumbbell structure becomes more stable and durable, and also provides a protective effect for the hand.

[0034] Furthermore, based on the configuration in which the support 108 is installed, the adjustable slide rod 104 and its associated components, as well as the slide paths 1081 located on both sides of the support 108, and the two sets of first weight plates 200 located on the left and right sides respectively, are synchronously integrated. One set of adjustable slide rods 104 is slidable to the left, and the slid and protruding portion of the adjustable slide rod 104 is used in combination with the first weight plate 200 located on the left side. The other set of adjustable slide rods 104 is slidable to the right, and the slid and protruding portion of the adjustable slide rod 104 is used in combination with the first weight plate 200 located on the right side. The adjustable slide rods 104 achieve weight adjustment of the dumbbell by being combined with different first weight plates 200 through their sliding motion. The specific implementation structure is as follows.

[0035] Two sets of adjustment slide rods 104 are located within their respective slide paths 1081. Near the left end of each adjustment slide rod 104, a pair of elastic pin shafts 103 are provided, connected to it. On the two longitudinal side walls of the front and rear sides of the support 108, there are operating ports 1082 distributed along the sliding direction of the adjustment slide rods 104. The operating ports 1082 are elongated openings, and the elastic pin shafts 103 are configured to move within these operating ports 1082.

[0036] Regarding the installation of the elastic pin shaft 103, the elastic pin shaft 103 is installed by passing through the adjustment slide rod 104 and is connected to a positioning device 106 located on the opposite side of the adjustment slide rod 104. A circular projection is provided on the outside of the positioning device 106, and a spring 105 is attached to the outside of the elastic pin shaft 103. At the same time, positioning holes 1083 are further provided on the inner wall of the slide path 1081, corresponding to the circular projection of the positioning device 106. Multiple sets of positioning holes 1083 are distributed sequentially along the sliding direction of the adjustment slide rod 104, so that when the adjustment slide rod 104 slides to different positions, the position can be fixed through the connection between the positioning device 106 and the positioning holes 1083.

[0037] Specifically, referring to Figures 10 to 13, when the elastic pin shaft 103 is stationary, the positioning device 106 is inserted into the corresponding positioning hole 1083, and at this time the adjustment slide rod 104 is unable to slide. When the elastic pin shaft 103 is pulled outward, the positioning device 106 disengages from the corresponding positioning hole 1083, and at this time the adjustment slide rod 104 can be slid to any position. After that, when the elastic pin shaft 103 is released, the positioning device 106 is inserted again into the corresponding positioning hole 1083, and the position of the adjustment slide rod 104 is readjusted. Through this adjustment operation, the length by which the sliding end protrudes from the fixed base plate 101 changes. When the protruding length of the sliding end is longer, it can come into contact with more first weight plates 200, which allows multiple sets of first weight plates 200 to be lifted in sync with the handle assembly 100 during training, making the weight of the side-adjustable dumbbell heavier. Conversely, the weight of the side-adjustable dumbbell becomes lighter.

[0038] The first weight plate 200 comprises an insertion plate 210 and a main body 220. The insertion plate 210 is installed on the upper center of the outside of the main body 220, and at the same time, a first insertion slot 221 matching the shape of the insertion plate 210 is provided on the inside of the main body 220. Here:

[0039] The main body portion 220 employs a rectangular panel with chamfered corners, and the first insertion slot 221 is provided on the inner side surface of the main body portion 220. The first insertion slot 221 is located near the top and has an upward-facing U-shaped opening. Dovetail-shaped engagement slots 222 are provided on both sides and the bottom surface of the first insertion slot 221. The engagement slots 222 have a certain depth and are used to accommodate the insertion plate 210 of the adjacent first weight plate 200.

[0040] The insertion plate 210 is a rectangular panel as a whole and is installed and fixed on the main body 220 by screws. The width between the side edges on both sides of the insertion plate 210 is sloped from top to bottom, so that the insertion plate 210 is wider at the top and narrower at the bottom. The bottom surface of the insertion plate 210 is an arcuate surface, so that when the insertion plate 210 is dropped into the first insertion slot 221 from top to bottom, positioning is made easier and the dropping process is made smoother. At the same time, both sides and the bottom surface of the insertion plate 210 are sloped surfaces set toward the main body 220, so that the three side edges of the insertion plate 210 have protrusions 211 with a triangular cross-section. When the insertion plate 210 is dropped into the first insertion slot 221, the protrusion 211 enters into the engagement slots 222 on both sides and the bottom of the first insertion slot 221, thereby preventing the insertion plate 210 from moving horizontally and detaching from the first insertion slot 221.

[0041] When the ten first weight plates 200 are placed within the fixed base 300, the insertion plates 210 of one pair of first weight plates 200 located on the inside slide into the first insertion slots 221 of another pair of first weight plates 200 located on the outside. In the same manner, the ten first weight plates 200 are interconnected and become a single unit, and can only be separated from each other when one or several consecutive first weight plates 200 on the inside move upward. The combined structure of the first weight plates 200 must be realized based on the contact effect with the handle assembly 100, and as a result, a second relief hole 223 is further provided on the main body portion 220 of the first weight plate 200. The shape of the second relief hole 223 matches the shape of the adjustment slide rod 104, the second relief hole 223 has a closed edge structure and is located on one side of the lower part of the main body portion 220. In this way, when the adjustment slide rod 104 enters the second relief hole 223, it can only slide along its length, and movement in other directions is impossible. This further ensures safety during product use and eliminates the risk of the parts detaching and falling.

[0042] The fixed base 300 comprises an enclosure plate 301, a limiting plate 302, a packing plate 303, and a bottom base plate 307. Here:

[0043] The bottom base plate 307 is located on the bottom surface, and the four sides of the bottom base plate 307 are each bent upward to form the enclosure plate 301. This creates a basic enclosure structure for the handle assembly 100 and the first weight plate 200, preventing the handle assembly 100 and the first weight plate 200 from sliding down and detaching from the fixed base 300.

[0044] Furthermore, to prevent the installation of the enclosure plate 301 from affecting the use of the side-adjustable dumbbell, a third relief hole 306 is provided at the position where the enclosure plate 301 and the handle assembly 100 are installed in correspondence. During the machining process, the height of the enclosure plate 301 is reduced by removing the enclosure plate 301 at the position of the third relief hole 306, thereby preventing it from affecting the use of the handle assembly 100 when the hand comes into contact with it.

[0045] The packing plates 303 are located on both sides of the upper part of the bottom substrate 307. The bottom surface of the packing plates 303 is positioned and fixed on the bottom substrate 307, so that the packing plates 303 are located below the first weight plate 200, supporting the bottom surface of the first weight plate 200 and maintaining the flatness of the bottom support surface of the first weight plate 200. At the same time, the packing plates 303 can be replaced depending on their wear condition.

[0046] The limiting plates 302 are located at both ends of the upper part of the bottom base plate 307. The limiting plates 302 are distributed vertically and are located inside the enclosure plate 301, with the outer side walls of the limiting plates 302 in contact with the inner walls of the enclosure plate 301. Bend-shaped mounting legs 304 are provided on the inside of the bottom of the limiting plates 302. Two mounting legs 304 are provided symmetrically, and at the same time, the mounting legs 304 are located on both sides of the packing plate 303. As a result, the limiting plates 302 are fixed by the bottom surfaces of the mounting legs 304 being positioned and fixed on the bottom base plate 307. In this structure, the installation of the limiting plates 302 restricts the handle assembly 100 and the first weight plate 200 at the ends, ensuring that they are properly positioned inside the fixing base 300. At the same time, the thickness of the mounting legs 304 should be set to be smaller than the thickness of the packing plate 303, so as not to affect the contact between the packing plate 303 and the first weight plate 200, thereby maintaining the flatness of the bottom support surface of the first weight plate 200.

[0047] Furthermore, in order to better fit with the first weight plate 200, a second insertion slot 305 corresponding to the insertion plate 210 of the first weight plate 200 is provided on the limiting plate 302. The second insertion slot 305 has the same structure as the first insertion slot 221, so that when the first weight plate 200 is placed inside the fixing base 300, the outermost insertion plate 210 is dropped into the second insertion slot 305, under conditions that guarantee the mixing accuracy between the first weight plate 200 and the limiting plate 302.

[0048] The above description is merely a preferred embodiment of this utility model. Any technical proposal that achieves the objective of this utility model by substantially similar means shall fall within the scope of protection of this utility model. [Explanation of Symbols]

[0049] 100 Handle Assembly 101 Fixed substrate 102 Sub-plate 103 Elastic pin shaft 104 Adjustable slide rod 1041 Mounting holes 1042 Movable passage 105 Spring 106 positioning items 107 Handle body 108 Support 1081 Slide Road 1082 Control Port 1083 Positioning holes 1084 Escape ditch 109 First positioning groove 110 Second positioning groove 111 Retaining protrusion 112 First escape hole 200 First Weight Plate 210 Insertion plate 211 Protrusion 220 Main body 221 First fitting groove 222 Interlocking groove 223 Second escape hole 300 Fixed Base 301 Enclosure board 302 Positioning plate 303 Spacer 304 Mounting legs 305 Second fitting groove 306 Third escape hole 307 Bottom board 400 Second Weight Plate 401 Round Cap 402 Engagement port 403 Fixtures

Claims

1. A side-adjustable dumbbell comprising a handle assembly and a plurality of weight plates located on both sides of the handle assembly, wherein the handle assembly comprises a handle body and a support, and fixed base plates attached to both ends of the handle body and the support. The side-adjustable dumbbell as described above, characterized in that the support is located below the handle body and has a flat rectangular parallelepiped structure, the two short sides of the support are each connected to the corresponding fixed base plate, a sliding channel is provided through the interior of the two long side edges of the support, and an adjustable sliding rod is provided slidably within the sliding channel, and a relief hole corresponding to the adjustable sliding rod is provided in the fixed base plate, and the adjustable sliding rod can slide out of the sliding channel and be installed by passing through the relief hole.

2. A side-adjustable dumbbell according to claim 1, characterized in that a relief groove is provided in the center of the upper surface of the support, which is arranged parallel to the handle body, and the relief groove is located directly below the handle body.

3. A side-adjustable dumbbell according to claim 1, characterized in that a positioning groove conforming to the shape of the handle body and / or the support is provided on the inner surface of the fixing base plate, and the end of the handle body or the support is inserted into the positioning groove and connected and fixed to the fixing base plate.

4. A side-adjustable dumbbell according to claim 3, characterized in that a relief hole is provided in the positioning groove for the adjustment slide rod to pass through the fixed base plate.

5. A side-adjustable dumbbell according to claim 1, wherein the adjustment slide rod is provided with a set of elastic pin assemblies connected thereto, and the elastic pin assemblies are provided passing through the adjustment slide rod. The support is characterized in that the side walls on both sides of the support are provided with operating ports distributed along the sliding direction of the adjustment slide rod, and the outer end of the elastic pin assembly is located within the operating port. The inner wall of the slide channel is provided with a plurality of positioning holes corresponding to the elastic pin assembly, the positioning holes are distributed at equal intervals along the length of the adjustment slide rod, and the inner end of the elastic pin assembly is positioned to be inserted into and fixed in any set of the positioning holes. A side-adjustable dumbbell characterized in that the weight piece is provided with relief holes distributed in accordance with the adjustment slide rod, and the relief holes have the same vertical cross-sectional shape as the adjustment slide rod and are closed rectangular openings.

6. A side-adjustable dumbbell according to claim 1, wherein a sub-plate is further provided on the inside of the fixed base plate and connected to it, a semicircular opening is provided in the center of the bottom surface of the sub-plate, and the handle body is positioned within the opening and installed so as to be in close contact with the inner wall of the opening.

7. A side-adjustable dumbbell according to claim 1, further comprising a fixing base, wherein the fixing base is located below the handle assembly and the weight plate, and the handle assembly and the weight plate can each be housed within the fixing base, and the fixing base includes a bottom base plate and an enclosure plate, wherein the bottom base plate is located on the bottom surface, and the four sides of the bottom base plate are each bent upward to form the enclosure plate.

8. A side-adjustable dumbbell according to claim 7, further comprising a spacer and a stopper. The spacers are located on both sides of the upper part of the bottom substrate, with the bottom surfaces of the spacers positioned on the bottom substrate and connected and fixed between them, and the weight piece is placed on the upper part of the spacers. The stopper is located at both ends of the upper part of the bottom base plate, is positioned vertically, and is located inside the enclosure plate, the outer side wall of the stopper abuts against the inner wall of the enclosure plate, the bottom of the stopper is connected and fixed to the bottom base plate via mounting legs formed integrally with it, and the mounting legs are located in the gap between the spacer and the enclosure plate.

9. A side-adjustable dumbbell according to claim 8, wherein the stopper is located on the outside of the corresponding weight piece, and the stopper is provided with an insertion groove corresponding to the weight plate, and the outer insertion plate of the weight plate is located within the insertion groove.

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