阅读说明：本技术 带有重量调节键的可滑动哑铃装置 (Slidable dumbbell device with weight adjusting keys ) 是由 刘平 于 2020-04-01 设计创作，主要内容包括：哑铃器械适配有一系列配重片(30),通过弹性地按下和滑动调节按钮以选择所需的重量,通过一个简单的动作就可以安全可靠地调节所述配重片的数量。该装置包括用于存放和展开装置的托架(40)、配重片和手柄装置,该手柄装置具有两个花键螺栓(23,24),两个所述花键螺栓用于支撑配重片(30)并通过调节销(27)同时进行调节,该调节销(27)通过运动传递齿轮(73)将花键螺栓(23,24)移动到一起。该装置可以通过永久配重和抓握选项进一步改进和加强。(The dumbbell apparatus is adapted with a series of weight plates (30) whose number can be safely and reliably adjusted by a simple action by elastically pressing and sliding an adjustment button to select a desired weight. The device comprises a carrier (40) for storing and deploying the device, a weight plate and a handle device with two splined bolts (23, 24) for supporting the weight plate (30) and simultaneously adjusted by an adjustment pin (27), which adjustment pin (27) moves the splined bolts (23, 24) together by means of a motion transfer gear (73). The device may be further improved and enhanced by permanent weighting and gripping options.)

1. A dumbbell bar assembly, wherein a desired number of weight plates to be lifted by a user are connected by positioning a single adjustment pin, comprising:

a plurality of weight plates, each weight plate having a slot for connection to said dumbbell bar assembly;

one or more base members for positioning the plurality of weight plates relative to the dumbbell bar assembly;

two spline bolt bodies are arranged at two ends of the dumbbell rod assembly respectively, and are meshed with the grooves of the weight plates for connecting the weight plates to the dumbbell rod assembly;

wherein the number of counterweights engaged by the two spline bolt bodies is controlled by the position of a single adjustment pin for adjusting the counterweight to be lifted by a user;

wherein, a single adjusting pin can be elastically pressed down, and the single adjusting pin can be moved to one or more positions after being pressed down, so that the required number of balance weights can be selected;

wherein a single adjustment pin is coupled to one of the spline bolt bodies, wherein movement of the single adjustment pin causes both spline bolt bodies to move simultaneously.

2. The dumbbell bar assembly of claim 1, wherein the weight plates have a parallel groove that is narrower near the periphery and a circular arc groove that is wider near the center of the weight plate.

3. The dumbbell bar assembly of claim 1, wherein the weight plates are made of a blow molded polymeric material.

4. The dumbbell bar assembly of claim 1, wherein the spline bolt body has a boss portion that passes through the parallel slots of the weight plates and engages the arc slot of the weight plate.

5. The dumbbell bar assembly of claim 1, wherein the spline bolt body has a plurality of teeth that mesh with teeth of a detent gear.

6. The dumbbell bar assembly of claim 2, wherein the spline bolt body has a plurality of teeth that mesh with teeth of a detent gear.

7. The dumbbell bar assembly of claim 4, wherein the splined bolt body has a plurality of teeth that mesh with teeth of a positioning gear.

8. The dumbbell bar assembly of claim 5, further comprising an adjustment plate that secures the adjustment pin in a fixed position corresponding to the desired number of weight plates.

9. The dumbbell bar assembly of claim 6, further comprising an adjustment plate that secures the adjustment pin in a fixed position corresponding to the desired number of weight plates.

10. The dumbbell bar assembly of claim 7, further comprising an adjustment plate that secures the adjustment pin in a fixed position corresponding to the desired number of weight plates.

11. The dumbbell bar assembly of claim 8, further comprising a spring that resiliently orients the adjustment pin away from the base and holds the adjustment pin in the fixed position, the spring being depressible and the adjustment pin being movable upon depression.

12. The dumbbell bar assembly of claim 9, further comprising a spring that resiliently orients the adjustment pin away from the base and maintains the adjustment pin in the fixed position, the spring being depressible and the adjustment pin being movable upon depression.

13. The dumbbell bar assembly of claim 10, further comprising a spring that resiliently orients the adjustment pin away from the base and maintains the adjustment pin in the fixed position, the spring being depressible and the adjustment pin being movable upon depression.

14. The dumbbell bar assembly of claim 11, wherein the adjustment plate is labeled with the weight of the dumbbell bar assembly for each position of the adjustment pin.

15. The dumbbell bar assembly of claim 12, wherein the adjustment plate is labeled with the weight of the dumbbell bar assembly for each position of the adjustment pin.

16. The dumbbell bar assembly of claim 13, wherein the adjustment plate is labeled with the weight of the dumbbell bar assembly for each position of the adjustment pin.

17. The dumbbell bar assembly of claim 14, wherein the dumbbell bar assembly is covered with a material that enhances a user's grip.

18. The dumbbell bar assembly of claim 15, wherein the dumbbell bar assembly is covered with a material that enhances a user's grip.

19. The dumbbell bar assembly of claim 16, wherein the dumbbell bar assembly is covered with a material that enhances a user's grip.

Technical Field

The present invention relates to the field of exercise and fitness equipment, in particular equipment for lightweight weight lifting, such as dumbbells, including equipment suitable for adjustable weight.

Background

Dumbbells are a very popular type of exercise and fitness equipment. It can provide effective and diversified fitness training. Dumbbells are commonly used for single-arm weightlifting, although they are also deployed in pairs so that both arms can be exercised simultaneously. Since dumbbell exercises can involve a wide variety of types of exercises, it is helpful to be able to quickly switch from one weight to another to take advantage of the full length of exercise. One approach is to use multiple dumbbells of different weights, but this is expensive and creates storage problems.

One method of allowing the transition from one weight to another without the bulk storage problem is to use a weight adjustable dumbbell. In general, an adjustable weight dumbbell includes a dumbbell handle having two ends adapted to receive one or more weight plates and may further include means to lock and secure the weight plates in place for safe use. There are a number of weight adjustable dumbbells on the market.

See, for example, US 200405969A. This device teaches a device in which adjustment mechanisms are required at each end of the dumbbell handle to bolt the associated weight plate. It is inconvenient and requires additional time to set a certain weight because two separate actions are required.

Reference may also be made to US20070184945A which avoids the above disadvantages using left and right thread theory. The bolts at the ends of the dumbbells can be moved by shifting the turntables so that the bolts fix certain plates of the required weight.

But because the thread on the threaded rod is a continuous line, the counterweight position is inaccurate. Accurate positioning of such dumbbells requires the addition of complex and expensive positioning mechanisms.

There are many dumbbell variants on the market, but none allow setting both accurate and balanced weights. This would provide significant advantages. What is not provided in the prior art is an adjustable weight dumbbell that allows and facilitates quick and effective adjustment of weight plates and also results in the use of the dumbbell apparatus to change weight in a balanced and safe manner.

It can be seen that there is a need for an adjustable dumbbell that addresses many of the problems associated with currently available adjustable dumbbells.

Disclosure of Invention

The embodiment of the invention provides a weight-adjustable dumbbell which is simple in structure, convenient to use, safe and reliable, and overcomes the defects of the prior art.

Certain embodiments of the present invention achieve this goal by providing a weight adjustable dumbbell that includes a dumbbell handle assembly, a plurality of weight plates, and a weight plate base. The dumbbell handle assembly comprises a handle component, two handle brackets, two spline bolt bodies, a positioning gear, an adjusting key and a positioning plate. The handle member is provided with a plurality of adjustable slots and bolt slots. A series of adjustable slots are located at the top of one side of the handle member and bolt slots are located on both sides of the handle member. A sliding groove is formed in the top of the handle support, and guide grooves are formed in two sides of the handle component. Two handle brackets are respectively fixed at two ends of the handle component.

Two spline bolt bodies are respectively inserted into two ends of the handle component and are meshed with each other in the handle component through gears. A positioning plate is fixed on a sliding groove of a handle bracket, the positioning plate is positioned in one of a plurality of discrete adjusting positions in the sliding groove, and the number of the discrete adjusting positions corresponds to the number of the counterweight plates. The adjusting key can pass through the narrow groove of the positioning plate, and the adjusting key can be fixed on the threaded hole of the spline bolt body. Each weight plate is provided with an oblique opening, and a rectangular groove for accommodating the dumbbell rod components is formed below the oblique opening.

The bevel opening and the long rectangular groove below the bevel opening form a Y-shaped groove. The long rectangular groove is provided with an arc groove for accommodating the spline bolt body. The counterweight plate base is also provided with a plurality of supporting grooves.

The handle member has an axial bore therein. The gear is positioned on the shaft through the shaft hole, rotates around the shaft and is fixed in place through a clamping pin. The gear is engaged with teeth inside each spline bolt body. The weight plates are positioned at both ends of the handle member in the base, and the bracket is coupled with the bracket of each weight plate. And a cover plate is fixed on the sliding groove of the handle bracket through a screw.

The adjustable handle comprises an adjusting pin, a fixed spring and a positioning seat. The adjusting pin is fixed in the threaded hole of one adjusting spline bolt body through the positioning seat, the fixing spring, the limiting groove on the positioning plate, the sliding groove on the handle support and the adjustable groove, so that the two spline bolt bodies can be accurately moved in and out in the same movement mode. The positioning plate is provided with a weight indicating label. A handle cover is fixed on the positioning seat.

Accordingly, it is an object of the present invention to provide a weight adjustable dumbbell having an adjustment handle that further allows a user to easily and conveniently select equal amounts of weight plates simultaneously at both ends of the dumbbell bar assembly.

Another object of the present invention is to provide a weight adjustable dumbbell, wherein the weight indicating label is provided on the positioning plate, so that the weight selection is simple and easy.

Another object of the present invention is to provide a weight-adjustable dumbbell handle and a positioning plate, which have a self-locking function, so that the spline bolt body does not move freely. Therefore, the weight plate can be safely fixed on the dumbbell rod assembly, and safe and reliable use and lifting are realized.

It is another object of the present invention to provide two spline bolt bodies of a weight adjustable dumbbell, which can be cooperatively operated by gears and can be extended or shortened in a physically equivalent amount.

It is another object of the present invention to provide a dumbbell device that provides comfort or safety by providing grip enhancement through knurling of the grip surface or by providing alternative materials for the grip surface.

It is another object of the present invention to provide an adjustable dumbbell device that can be customized for convenient use with a variety of weights.

It is another object of the present invention to provide a dumbbell device that can be manufactured using a variety of manufacturing methods.

Drawings

FIG. 1 is an oblique view of an adjustable dumbbell assembly according to an exemplary embodiment of the present invention;

FIG. 2 depicts the adjustable dumbbell of FIG. 1 with the major components separated in relative positions so that all of the major components can be seen;

FIG. 3 is an exploded view of the adjustable dumbbell of FIG. 1;

FIGS. 4A-4C show various cross-sectional views of an adjustable dumbbell bar assembly; wherein FIG. 4A is an oblique side sectional view; FIG. 4B is a front view of the left bracket member cut away; FIG. 4C is a top cross-sectional view;

FIGS. 5A through 5D are diagrams depicting various key features of dumbbell bar assembly adjustment; wherein FIG. 5A is a front view of the dumbbell bar assembly with the left bracket member cut away and showing the adjustment pen and first position; fig. 5B depicts a view of the weight plate showing how it is received by the spline bolt body; FIG. 5C depicts the adjustment key in a first position; FIG. 5D depicts the adjustment pin in a second position;

6A-6C depict various views of the device; wherein fig. 6A is a front view of a single weight plate selected; fig. 6B is a left side cross-sectional view with one weight plate selected; FIG. 6C is a top view of a selected weight plate;

fig. 7A to 7C are schematic views of the working principle of the present invention; FIG. 7A is a front view of four selected clump weights; FIG. 7B is a left side cross-sectional view of a weight plate with four selected clump weights; fig. 7C is a front cross-sectional view of a four weight plate selection.

Detailed Description

The following detailed description uses the best mode presently contemplated for carrying out exemplary embodiments of the present invention. The scope of the invention is best defined by the appended claims and, therefore, the specific embodiments are presented for the purpose of illustrating the general principles of the invention only and are not intended to be limiting.

Broadly speaking, embodiments of the present invention provide a dumbbell device that mates with a series of weight plates and can safely and reliably adjust the number of weight plates in a single motion. The dumbbell device comprises a bracket for storing and unfolding the dumbbell device, a plurality of weight plates and a handle device, wherein the handle device is provided with two spline bolts, the two spline bolts support the weight plates and can be adjusted through an adjusting pin at the same time, and the adjusting pin enables the spline bolt bodies to move together through a motion transmission gear. The dumbbell device can be further enhanced with permanent weights and gripping options.

Referring first to fig. 1 and 2, it can be seen that the main components of the weight adjustable dumbbell according to the exemplary embodiment of the present invention include a dumbbell bar assembly 20, a plurality of weight plates 30, and a base member 40. Fig. 1 shows the dumbbell device in a standard state, while fig. 2 shows the main components separated from each other so that the key features of these main components can be seen. The dumbbell rod assembly 20 is used to accommodate the moving parts of the present invention, providing weight adjustability. The base member 40 is used to store and deploy the entire dumbbell device.

The weight plate 30 may be made of various materials. In some embodiments, the weight plate 30 is made of a cast iron material. In other embodiments, the weight plate 30 is made of a polymer material such as a blow molded polymer material. In some embodiments, the blow molded polymeric material may be a hollow material and filled with a substance to achieve a desired weight. In other embodiments, the blow molded polymeric material itself is sufficient to achieve the desired weight.

Each weight plate 30 has a Y-shaped slot 31, and the Y-shaped slot 31 includes an upper bezel 32, an elongated rectangular slot 33, and a circular arc slot 34. The arcuate slot 34 allows the dumbbell rod assembly 20 to receive a weight plate 30 and secure the weight plate 30 in place, as will be described more fully herein. The elongated rectangular slot 33 is used to receive the dumbbell rod assembly 20, and the bezel 32 acts as a guide to allow the dumbbell rod assembly 20 to fall into the elongated rectangular slot 33. The base member 40 is used to receive and position the weight plate 30. The number of slots is the same as the number of weight plates 30. The base member 40 also serves to support the dumbbell bar assembly 20.

Referring now to fig. 3, the dumbbell bar assembly 20 basically includes a handle member 21, a plurality of handle brackets 22, an adjusted spline bolt body 23, an adjusting spline bolt body 24, a positioning gear 73, a positioning plate 26, an adjusting pin 27, a cover plate 25 and a plurality of weight plates 30. Handle holders 22 are attached to both ends of the handle member 21. The grip portion 62 in the middle of the handle member 21 is provided with a knurled surface 61, which facilitates the user to grip the grip portion 62 more safely. The handle member 21 is provided with a cover plate 25 in an opposite orientation to the positioning plate 26. The handle bracket 22 also mates with the guide slot 81 to help maintain the weight stack 30 in alignment. Finally, the handle bracket may be further coupled with equal weights 83 at either end to provide stability in use permanently, or to provide only the weight resistance required.

The handle member 21 is further coupled to a hole 71, the hole 71 may receive a pin 72, and the pin 72 may further serve as a shaft for positioning a gear 73. A positioning gear 73 is fixed in the handle member 21 through a hole 71 by a pin 72. The spline bolt bodies 23 and 24 are inserted into both ends of the handle member 21 and are engaged with each other through the positioning gear 73. One end of the adjusting spline bolt body 24 is provided with a threaded hole 78. After the adjusting spline bolt body 24 is fully inserted into the handle member 21, the adjusting pin 27 is positioned in the threaded hole 78 of the adjusting spline bolt body 24 through the sliding groove of the handle bracket 22 and the adjusting groove 17 (see fig. 4) of the handle member 21, thereby restricting the spline bolt body 24 from moving within the functional range.

The cover plate 25 is fixed to the handle holder 22, for example, by screws 28. The positioning plate 26 is fixed to the handle bracket 22 by an adjusting pin 27. The adjusting pin 27 is fixed in the threaded hole 78 of the spline bolt body 24 by the positioning seat 81, the fixing spring 49, the positioning plate 26, the sliding groove, and the adjusting groove 17 (see fig. 4). A handle cover is fastened on the positioning seat 81 (fig. 5D). The weight body 83 is fixed at each end of the handle member 21 by the screw 99.

The adjusting spline bolt body 24 and the adjusted spline bolt body 23 are identical in construction, except for a threaded bore 78 in the adjusting spline bolt body 24, which bore 78 is adapted to receive a threaded set screw portion of the adjusting pin 27. In some embodiments, the structure of the adjusting spline bolt body 24 and the adjusted spline bolt body 23 may be the same, wherein the locating pin 29 may be inserted into the threaded hole 78 of the adjusted spline bolt body 23.

The length 91 and 92 of each spline bolt body 23 and 24 is an extended circumference, and a projection 93 and 94 extends from each extended circumferential length 91 and 92, and the extended circumferential lengths 91 and 92 are adapted to slide in the circular arc groove 34 of each weight plate 30. This relationship causes each spline bolt body 23 and 24 to move in and out simultaneously so that the projections 93 and 94 of each spline bolt body 23 and 24 extending the circumferential lengths 91 and 92 engage the desired circular arc groove 34 of each weight plate 30 and lift with dumbbell 10.

Each spline bolt body 23 and 24 also has a missing angle length 95 and 96 with a half-missing angle circumference. Each of the unfilled circumferential projections 93 and 94 are placed together and fit snugly within the handle member 21. The unfilled corner lengths 95 and 96 mate with meshing teeth 97, and the meshing teeth 97 mechanically communicate through the mating and sandwiching of the positioning gear member 73 therebetween. Thus, as the adjustment spline bolt body 23 moves equally and oppositely inwardly or outwardly, the adjustment spline bolt body 24 follows the adjustment pin 27 moving inwardly or outwardly.

In this manner, starting with the weight plate 30 closest to the handle member 21, the lobes 93 and 94 of each spline bolt body 23 and 24 engage the circular arc groove 34 of the desired weight plate 30 and "select" the weight plate 30 for the desired exercise activity.

It is currently useful to demonstrate how the user can easily and conveniently make the desired adjustments. The required adjustment is accomplished by positioning the base 50 and the adjustment pin 27. Referring to fig. 5A, it can be seen that one of the alignment plates 26 mates with a series of alignment holes 12, the alignment holes 12 interconnecting the narrow channels 17. An adjustment pin 27 connected to the adjustment spline bolt body 24 is fittingly received through the passage 17. When the adjustment pin 27 is moved from inside to outside or from outside to inside, the spline bolt bodies 23 and 24 "select" the required number of weight plates 30 by the above-described interaction of the internal gear 73 with the convex portions 93 and 94 of each spline bolt body 23 and 24.

For ease of selection, the free end of the adjustment pin 27 is fitted with a fixed head 47, the fixed head 47 accommodating the spring-loaded cover member 42. The spring-loaded cover member further comprises an inverted conical member 43, the inverted conical member 43 mating with a hole at the narrow end, the adjustment pin 27 mating with the hole.

The adjustment pin 27 mates with the externally threaded portion 45, the externally threaded portion 45 is received by an internally threaded portion 46 (not shown) of the adjustment spline bolt body 24, and the other end of the adjustment pin 27 has a fixed head 47 of sufficient length to be screwed into the adjustment spline bolt body 24 and through the passage 17 a sufficient distance to allow operation of the spring-loaded cover member 42.

Thus, the adjustment pin 27 may be threaded first through the coil spring 49, then through the wide end 48 of the conical member 43, then through the channel 17, and then the external thread 45 threaded into the internal thread 46 of the adjustment spline bolt body 24.

The diameter of the fixed head 47 is sufficient to hold the coil spring 49 in order to provide tension when the cover member 42 is pulled up the fixed head 47. The cover member 42 is mated with any desired one of the alignment apertures 12-16. When the cover member 42 is pulled upward, the adjustment pin 27 is movable.

The adjusting pin 27 is pushed down, and the adjusting pin 27 can move in the positioning plate 26.

Each of the alignment holes 12-16 is passed over the mating movable spline bolt bodies 23 and 24 to select the desired number of weight plates. The tension of the coil spring 49 will keep the adjusting spline bolt body 24 locked in the desired position, thereby "selecting" the correct number of weight plates 30.

It should be noted that the knurled gripping surface 62 may be eliminated or enhanced by providing some other gripping surface such as rubber, plastic, vinyl, cloth, wool, or synthetic fiber. While such alternatives may add slightly to the difficulty of manufacture, they may make the device easier and more comfortable to use. It is important to note here that there are likely variations to the preferred embodiments and that it is possible to provide one or more additional features to the dumbbell device while still complying with the spirit and scope of the invention.

It should also be noted that the spline bolt bodies 23 and 24 are always described as having a generally cylindrical configuration along the length direction, and the projections 93 and 94 are always referred to as circular arcs to fit in the circular arc grooves 34 of the rectangular groove 33 of the weight plate. The spline bolt body may also be formed in another cross-sectional shape such as rectangular or polygonal so long as the cross-sectional shape ensures the application of features such as a tight fit in the handle member 21, the mating of the bolt face with the arcuate groove 34 of the rectangular groove 33 of the weight plate, and the provision of a flat surface with teeth along the flat surface of the unfilled corner portion 95 and 96 of each spline bolt body 23 and 24. This choice of cross-sectional shape may make manufacturing more convenient without sacrificing the user-friendly qualities of the dumbbell device.

It should further be noted that the projections 93 and 94 do not necessarily have to be circular arcs and that small part shapes, squares or any other geometrical configuration may be used instead of circular arc grooves 34 and rectangular grooves 33 to achieve a firm geometrical communication between the projection faces and the receptacle of the long rectangular groove on each weight plate.

It should be understood, of course, that the foregoing relates to exemplary embodiments of the invention and that modifications may be made thereto without departing from the spirit and scope of the invention as set forth in the following claims.