KR20210132017A - Sliding dumbbell device with weight control keys - Google Patents

Abstract

The slidable dumbbell device with a weight control key according to the present invention includes a plurality of weight stacks 30, and the number of the weight stacks can be adjusted in a single simple operation by elastically pressing and sliding the control button to select a desired weight. It can be adjusted safely and reliably. The dumbbell device includes a base member 40 for storing and unfolding the overall dumbbell device, a weight stack 30, and a handle member. The spline bolt bodies 23 and 24 are inserted at both ends of the handle member, and are meshed with each other through the positioning gear 73 . The spline members 23 , 24 are adjusted simultaneously by means of an adjustment pin 27 which moves together. The device can be further enhanced with permanent weights and gripping options.

Description

Sliding dumbbell device with weight control keys

The present invention relates to the field of exercise and fitness machines, and more particularly, to a machine used for light weight lifting such as dumbbells, and includes a machine capable of adjusting the weight.

Dumbbells are a very popular exercise and fitness machine. This can provide effective and versatile fitness training. Dumbbells are typically used for one-arm weightlifting, but they are also arranged in pairs so that both arms can be exercised simultaneously. Dumbbell workouts can include many different types of exercises, so it helps you quickly switch from one weight to another so you can make full use of your workout time. One way is to use multiple dumbbells of different weights, but this is expensive and creates storage problems.

One way to switch from one weight to another without the bulk storage problem is to use dumbbells with adjustable weights. Generally speaking, a dumbbell with adjustable weight includes one dumbbell handle, both ends of the handle are suitable for receiving one or more balance weight plates, and a device for safely using the balance weight plate by locking and fastening the balance weight plate in position may further include. There are several dumbbells on the market with adjustable weight.

See, for example, US200405969A. The device teaches a device that provides an adjustment mechanism at each end of the dumbbell handle so that the bolts secure the associated balance weight plate. It is not convenient because two independent operations are required, and additional time is required to set up a constant weight.

Reference may further be made to US20070184945A, which avoids this disadvantage by using the left-right thread theory. By turning the turntable and moving the bolt at the end of the dumbbell, you can force the bolt to hold some plate of the required weight.

However, since the thread of the threaded rod is a continuous line, the balance weight position is not accurate. Accurate positioning of these dumbbells must increase the complex and expensive positioning mechanism.

Numerous dumbbell variants exist on the market, but none of them allow for a precise and balanced weight at the same time. This will give you a clear advantage. What the prior art does not provide is an adjustable weight dumbbell that allows and facilitates quick and effective adjustment of the weight plate, which also allows using the dumbbell device to change weight in a balanced and safe manner.

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

Embodiments of the present invention overcome the disadvantages of the prior art by providing a simple structure, convenient to use, safe and reliable weight adjustable dumbbells. Some embodiments of the present invention achieve this purpose by providing adjustable weight dumbbells (including one dumbbell handle assembly, several weight stacks and one weight stack base). The dumbbell handle assembly includes one handle member, two handle supports, two spline bolt bodies, one positioning gear, one adjustment key and one positioning panel. The handle member is provided with an adjustable groove and a bolt groove. A series of adjustable grooves are located on top of one side of the handle member, and bolt grooves are located on both sides of the handle member. A sliding groove is opened on the top of one handle support, and guide grooves are opened on both sides of the handle member. Two handle supports are respectively fixed to both ends of the handle member.

The two spline bolt bodies are respectively inserted into both ends of the handle member and meshed with each other in the handle member through a gear. A positioning panel is fixed to the sliding groove of one handle support, and the positioning panel is placed in a position at a slight discrete adjustment position in the sliding groove, and the number of the slightly discrete adjustment position corresponds to the weight stack quantity. The adjustment key can penetrate the narrow groove in the positioning panel to secure the adjustment key in the threaded hole of the spline bolt body. Each weight stack is opened with a ramp and a rectangular groove is opened below the ramp to receive the dumbbell bar assembly.

The ramp and the long rectangular groove under the ramp form one "Y" shaped groove. One arc groove is installed in the long rectangular groove to accommodate the spline bolt body. A few more support grooves are opened in the weight stack base.

One shaft hole is installed in the handle member. The gear is positioned on the shaft through the shaft hole, rotated around the shaft, and held in position via a single locking pin. The gears and the teeth inside each spline bolt body mesh with each other. Weight stacks are positioned at both ends of the handle member in the base, and the brackets and brackets of each weight stack are matched. One cover plate is fixed to the sliding groove of the one handle support by a screw.

The adjustable handle includes one adjustment pin, one fixed spring and one positioning seat. The adjusting pin is fixed within the screw hole of one adjusting spline bolt body through the positioning seat, the fixing spring, the position limiting groove of the positioning panel, the sliding groove and the adjustable groove of the handle support, so that the two spline bolt bodies can move simultaneously in the same way. Make sure that it can be accurately drawn in and out. One weight display label is installed on the positioning panel. One handle cover is fixed to the positioning seat.

Accordingly, it is an object of the present invention to provide a weight-adjustable dumbbell, wherein the dumbbell has one adjustment handle so that the user can additionally select a stack of weights of equal weight from both ends of the dumbbell bar assembly simply and conveniently at the same time. can do.

Another object of the present invention is to provide a weight-adjustable dumbbell bar, the positioning panel thereof is provided with a weight display label so that the weight selection is simple.

Another object of the present invention is to provide a weight-adjustable handle and positioning panel of the dumbbell bar, since the handle and the positioning panel have an automatic locking function, the spline bolt body does not move at will. Therefore, the weight stack can be securely fixed to the dumbbell bar assembly to achieve safe and reliable use and lifting.

Another object of the present invention is to provide two spline bolt bodies of an adjustable weight dumbbell, wherein the two spline bolt bodies can cooperate through a gear and can undergo physical equivalent stretching or shortening.

Another object of the present invention is to provide a dumbbell device, which can enhance gripping through knurling of the gripping surface or providing an alternative material for the gripping surface, thereby improving comfort and safety. to provide.

Another object of the present invention is to provide an adjustable dumbbell device, the dumbbell device can be customized and can be conveniently combined with various balance weights.

Another object of the present invention is to provide a dumbbell device, the dumbbell device can be manufactured using various manufacturing methods.

These and other features, aspects and advantages of the present invention may be better understood by reference to the drawings, the specification and the claims below.

1 is a perspective view of assembling and using an adjustable dumbbell according to an exemplary embodiment of the present invention;
Figure 2 illustrates the adjustable dumbbell of Figure 1, with the major parts separated in relative positions so that all major parts are visible;
Fig. 3 is an exploded view of the adjustable dumbbell of Fig. 1;
4A-4C show various cross-sectional views of an adjustable dumbbell bar assembly, wherein FIG. 4A is an oblique side cross-sectional view; Fig. 4B is a front view with the left support member cut away; 4C is a top view;
Figures 5A-5D are views of the various key features that the dumbbell bar assembly adjusts, wherein Figure 5A is a front view of the dumbbell bar assembly showing the adjustment pen and first position with the left support member removed; ; Figure 5B illustrates a perspective view of a balance weight plate, showing how it is received by the spline bolt body; 5C illustrates the control key located in the first position; 5D illustrates the adjustment pin positioned in the second position;
Figures 6A-6C illustrate various perspective views of the device, wherein Figure 6A is a front view with one balance weight plate selected; Fig. 6B is a left sectional view when one balance weight plate is selected; Fig. 6C is a plan view when one balance weight plate is selected;
7A to 7C are schematic diagrams of the working principle of the present invention, wherein FIG. 7A is a front view of selecting four balance weight plates; 7B is a left sectional view selecting four balance weight plates; 7C is a front cross-sectional view when selecting four balance weight plates.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The detailed description that follows has used the presently most preferred mode of carrying out exemplary embodiments of the present invention. It is preferred that the scope of the present invention be defined by the appended claims, so the detailed description of the present invention is merely for the purpose of illustrating the general principles of the present invention and is not used for purposes of limitation.

Broadly speaking, an embodiment of the present invention provides a dumbbell device, wherein the dumbbell device is matched with a series of weight stacks and can safely and reliably adjust the number of weight stacks through one simple operation. The dumbbell device comprises a bracket for storing and unfolding the dumbbell device, a plurality of weight stacks and a handle device, wherein the handle device includes two spline bolts, the two spline bolts supporting the weight stack At the same time, it can be adjusted through one adjusting pin, which moves the gear to move the spline bolt body to one place. The dumbbell device is further augmented with permanent balance weights and gripping options.

1 and 2, the main components of the weight adjustable dumbbell according to an exemplary embodiment of the present invention are one dumbbell bar assembly 20, a plurality of weight stacks 30 and one base member ( 40) can be seen. Fig. 1 shows the dumbbell device in a standard state, and Fig. 2 shows the main parts separated from each other, so that the key features of these main parts can be seen. The dumbbell bar assembly 20 accommodates the moving parts of the present invention to provide weight control possibilities. The base member 40 is for storing and unfolding the overall dumbbell device.

The weight stack 30 may be made of a variety of materials. In some embodiments, the weight stack 30 is made of a cast iron material. In other embodiments, the weight stack 30 is made of a polymeric material, such as a blow molded polymeric material. In some embodiments, the blow molding polymer material may be a hollow material and may be filled with any material to reach the required weight. In other embodiments, the blow molding polymer material itself may reach the required weight.

Each weight stack 30 has one Y-shaped groove 31 , and the Y-shaped groove 31 has one upper inclined hole 32 , one long rectangular groove 33 and one arc groove 34 . ) is included. The arc groove 34 may allow the dumbbell bar assembly 20 to receive the weight stack 30, and may cause the weight stack 30 to be secured in position, for which this specification provides a comprehensive description. will proceed The long rectangular groove 33 is for receiving the dumbbell bar assembly 20 , and the ramp 32 acts as a guide so that the dumbbell bar assembly 20 rests in the long rectangular groove 33 . The base member 40 receives and positions the weight stack 30 . The number of grooves is equal to the number of weight stacks 30 . The base member 40 is further used to support the dumbbell bar assembly 20 .

Referring to FIG. 3 , the dumbbell bar assembly 20 mainly includes one handle member 21 , a plurality of handle supports 22 , one adjustable spline bolt body 23 , and one adjustable spline bolt body 24 . ), one positioning gear 73 , one positioning panel 26 , one adjustment pin 27 , one cover plate 25 and a plurality of weight stacks 30 . A handle support 22 is connected to both ends of the handle member 21 . A knurled surface 61 is installed on the gripping portion 62 in the middle of the handle member 21 , so that the user can grip the gripping portion 62 conveniently. One cover plate 25 is installed on the handle member 21 , the direction of which is opposite to that of the positioning panel 26 . The handle support 22 also matches the guide groove 81 to bring the weight stack 30 into alignment. Finally, the handle support is further matched with the same balance weight 83 on any one stage to provide permanent use stability or only the necessary weight resistance.

The handle member 21 is further matched with the hole 71 , the hole 71 can receive the pin shaft 72 , the pin shaft 72 being further used as a shaft of the positioning gear 73 . can The positioning gear 73 of the through hole 23 may be fixed to the handle member 21 through the pin shaft 72 . The spline bolt bodies 23 , 24 are inserted at both ends of the handle member 21 , and are meshed with each other through the positioning gear 73 . A screw hole 78 is opened at one end of the adjustment spline bolt body 24 . After the adjustment spline bolt body 24 is fully inserted into the handle member 21, the adjustment spline bolt is passed through the sliding groove of the handle support 22 and the adjustment groove 17 (see FIG. 4) of the handle member 21. By positioning the adjusting pin 27 in the screw hole 78 of the body 24, the spline bolt body 24 is restricted to move within the functional range.

The cover plate 25 is secured to the handle support 22 , for example via screws 28 . The positioning panel 26 is fixed to the handle support 22 via the adjusting pin 27 . Screw hole ( 78) is fixed within. Fit the handle cover (FIG. 5D) to the positioning seat 81. The balance weight body 83 is fixed to each end of the handle member 21 through the threads 99 .

Except for adjusting the receiving screw hole 78 in the spline bolt body 24, the structure of the adjustable spline bolt body 24 and the adjustable spline bolt body 23 is the same, and the screw hole 78 is adjustable. for receiving the threaded positioning threaded portion of the pin (27). In some embodiments, the structure of the adjustable spline bolt body 24 and the adjustable spline bolt body 23 may be the same, wherein the positioning pin 29 is the screw hole 78 of the adjustable spline bolt body 23 . can be inserted into

The length 91, 92 of each spline bolt body 23, 24 is an extended circumference, from which the protrusion 93, 94 extends from each extended circumferential length 91, 92, and the extended circumference length 91, 92 is Through matching, it is possible to slide within the arc groove 34 of each weight stack 30 . This relationship allows each spline bolt body 23 , 24 to be drawn in and out simultaneously, and the extended circumferential length 91 , 92 of each spline bolt body 23 , 24 is the required arc groove of each weight stack 30 . Combined with (34), the dumbbells (10) are lifted together.

Each spline bolt body 23 , 24 further has a notch length 95 , 96 having a semi-engraved circumference. The protrusions 93 , 94 on the circumference of each indentation are put together and fit tightly within the handle member 21 . The indentation lengths 95 and 96 are matched with the meshing teeth 97, and the meshing teeth 97 are in mechanical communication with the positioning gear member 73 sandwiched therebetween through matching. In this way, the adjustment spline bolt body 24 moves inward or outward along the adjustment pin 27 in response to an equal and opposite inward or outward movement of the adjustment spline bolt body 23 .

Thereby, from the weight stack 30 closest to the handle member 21, the projections 93 and 94 of each spline bolt body 23, 24 and the arc groove 34 of the required weight stack 30 are combined, and the weight "Select" the stack 30 and use it for the required training activity.

What is needed now is to explain how the user can simply and conveniently make the necessary adjustments. The necessary adjustment is completed through the positioning base 50 and the adjustment pin 27 . Referring to FIG. 5A , it can be seen that one positioning panel 26 is matched with a series of positioning holes 12 , and the positioning holes 12 are interconnected with a narrow passage 17 . The adjustment pin 27 connected to the adjustment spline bolt body 24 may pass through the passageway 17 through matching. When the adjustment pin 27 moves from inside to outside or from outside to inside, the spline bolt bodies 23 and 24 are the protrusions of each spline bolt body 23 , 24 through the above-described interaction of the inner gear 73 . Let (93, 94) “select” the weight stack 30 of the required quantity.

For convenience of selection, a fixing head 47 is mounted on the free end of the adjustment pin 27 , and the fixing head 47 receives the spring-type cover member 42 . The spring-type cover member further includes one back tapered member 43, wherein the back tapered member 43 matches one hole at the narrow end, and the adjustment pin 27 closely matches the hole.

The adjustment pin 27 is matched with the outer thread 45, and the inner thread 46 (not shown) of the adjustment spline bolt body 24 receives the outer thread 45, and the adjustment pin 27 is fixed at the other end. The length of the head 47 allows it to fit sufficiently into the adjustment spline bolt body 24 and to be sufficiently spaced through the passageway 17 to allow operation of the spring-like cover member 42 .

Accordingly, first the adjustment pin 27 passes through the spiral spring 49 , then through the wide end 48 of the conical member 43 , then through the passage 17 , and then through the outer thread. (45) into the inner thread (46) of the adjustment spline bolt body (24).

The diameter of the fixed head 47 will sufficiently secure the helical spring 49 to provide tension when pulling the cover member 42 towards the fixed head 47 . The cover member 42 can be matched and closely mated with any one positioning hole 12, 13, 14, 15, 16 required. When the cover member 42 is pulled upward, the adjustment pin 27 is movable.

Pressing down on the adjustment pin 27 allows the adjustment pin 27 to move away from the positioning panel 26 .

Each positioning hole (12, 13, 14, 15, 16) is matched by moving the spline bolt body (23, 24) can select a weight stack of the required quantity. The tension of the helical spring 49 causes the adjustable spline bolt body 24 to "select" the correct number of weight stacks 30 by holding the lock in the required position.

It should be noted that the knurled gripping surface 62 may be eliminated or augmented by providing some other gripping surface such as rubber, plastic, vinyl, cloth, wool or synthetic fibres. Although this replacement will increase the manufacturing difficulty somewhat, it may make the device easier and more comfortable to use. The point here is that variations may occur in the preferred embodiment and one or more additional features may be provided to the dumbbell device, but such features still fall within the spirit and scope of the present invention.

The spline bolt bodies 23 and 24 always have a generally cylindrical structure along the longitudinal direction, and the protrusions 93 and 94 are always referred to as arc-shaped, and are combined with the arc groove 34 of the weight stack rectangular groove 33. It should be further noted that it is described as The spline bolt body may be manufactured in other cross-sectional shapes such as rectangles or polygons, but the cross-sectional shape ensures features such as tight blending within the handle member 21, and the bolting surface is the arc of the weight stack rectangular groove 33 In combination with the groove 34, a flat surface with teeth along the flat surface of each spline bolt body 23, 24 indentation length 95, 96 may be installed. The choice of such a cross-sectional shape can make manufacturing more convenient in situations that do not compromise the good quality of the dumbbell device user.

The protrusions 93, 94 do not necessarily have to be arcuate, and can replace the arc grooves 34 and the rectangular grooves 33 with small part shapes, squares or any other geometry, so that the protrusion faces and each weight stack. It should be further noted that it is possible to realize a stable geometrical communication between the receptacles of the long rectangular grooves in the

Of course, it should be understood that the above content is an exemplary embodiment of the present invention, and modifications may be made without departing from the spirit and scope of the present invention as set forth in the claims below.

Claims (19)

In the dumbbell bar assembly for connecting the required number of weight stacks that the user wants to lift by positioning only one adjustment pin,
a plurality of weight stacks each having one groove opened to connect the dumbbell bar assembly;
one or more base members for positioning the plurality of weight stacks relative to the dumbbell bar assembly;
and two spline bolt bodies provided at both ends of the dumbbell bar assembly, respectively, and engaged with the grooves of the weight stack to connect the weight stack to the dumbbell bar assembly,
Here, the balance weight of the quantity is joined by the two spline bolt bodies, and the balance weight of the quantity is controlled by the position of only one adjusting pin to adjust the balance weight that the user wants to lift;
Here, only one adjustment pin can elastically down-press, and after the down-press, only one adjustment pin can move to one or multiple positions to select a required quantity of balance weight;
Here, only one adjustment pin is connected to one of the spline bolt bodies, and the movement of only one adjustment pin of the adjustment pin can cause the two spline bolt bodies to move together. According to claim 1,
The weight stack has one balance groove and one arc groove, wherein the balance groove narrows near the outer periphery, and the arc groove widens near the center of the weight stack. According to claim 1,
wherein the weight stack is made of a blow molding polymer material. According to claim 1,
The spline bolt body includes one protrusion, wherein the protrusion penetrates the balance groove of the weight stack and joins the arc groove of the weight stack. According to claim 1,
The spline bolt body has a plurality of teeth, the dumbbell bar assembly, characterized in that the teeth mesh with the teeth of the positioning gear. 3. The method of claim 2,
The spline bolt body has a plurality of teeth, the dumbbell bar assembly, characterized in that the teeth mesh with the teeth of the positioning gear. 5. The method of claim 4,
The spline bolt body has a plurality of teeth, the dumbbell bar assembly, characterized in that the teeth mesh with the teeth of the positioning gear. 6. The method of claim 5,
Dumbbell bar assembly, characterized in that it further comprises one adjustment plate for fixing the adjustment pin at a fixed position corresponding to the weight stack of the required quantity. 7. The method of claim 6,
Dumbbell bar assembly, characterized in that it further comprises one adjustment plate for fixing the adjustment pin at a fixed position corresponding to the weight stack of the required quantity. 8. The method of claim 7,
Dumbbell bar assembly, characterized in that it further comprises one adjustment plate for fixing the adjustment pin at a fixed position corresponding to the weight stack of the required quantity. 9. The method of claim 8,
and a spring for causing the adjustment pin to elastically orient away from the base and for keeping the adjustment pin in the fixed position, wherein the spring is capable of downward pressing by downward pressing, and the adjustment pin after downward pressing A dumbbell bar assembly characterized in that it is movable. 10. The method of claim 9,
and a spring for causing the adjustment pin to elastically orient away from the base and for keeping the adjustment pin in the fixed position, wherein the spring is capable of downward pressing by downward pressing, and the adjustment pin after downward pressing A dumbbell bar assembly characterized in that it is movable. 11. The method of claim 10,
and a spring for causing the adjustment pin to elastically orient away from the base and for keeping the adjustment pin in the fixed position, wherein the spring is capable of downward pressing by downward pressing, and the adjustment pin after downward pressing A dumbbell bar assembly characterized in that it is movable. 12. The method of claim 11,
Dumbbell bar assembly, characterized in that the weight corresponding to each position of the adjustment pin of the dumbbell bar assembly is marked on the adjustment plate. 13. The method of claim 12,
Dumbbell bar assembly, characterized in that the weight corresponding to each position of the adjustment pin of the dumbbell bar assembly is marked on the adjustment plate. 14. The method of claim 13,
Dumbbell bar assembly, characterized in that the weight corresponding to each position of the adjustment pin of the dumbbell bar assembly is marked on the adjustment plate. 15. The method of claim 14,
A dumbbell bar assembly comprising covering the dumbbell bar assembly with a material that enhances user gripping. 16. The method of claim 15,
A dumbbell bar assembly comprising covering the dumbbell bar assembly with a material that enhances user gripping. 17. The method of claim 16,
A dumbbell bar assembly comprising covering the dumbbell bar assembly with a material that enhances user gripping.

Images