CN107754211B

CN107754211B - Dumbbell

Info

Publication number: CN107754211B
Application number: CN201610672220.8A
Authority: CN
Inventors: 王荏弘
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-08-16
Filing date: 2016-08-16
Publication date: 2021-01-29
Anticipated expiration: 2036-08-16
Also published as: CN107754211A

Abstract

The invention provides a dumbbell, which comprises a body, wherein the body is provided with a holding part, a left accommodating chamber and a right accommodating chamber which are communicated with each other inside so as to be filled with a counterweight material, one end of the left accommodating chamber is provided with a left opening and a left welding part, the left welding part is welded and combined with the periphery of one end of a left end plate so as to seal the left opening, the plate surface of the left end plate is provided with a plurality of first positioning parts, and a left cover plate is connected with the other end of the left end plate. Therefore, the speed of the counterweight material can be increased, the production cost can be reduced, and the product quality can be ensured.

Description

Dumbbell

Technical Field

The present invention relates to a dumbbell, and more particularly to a dumbbell capable of increasing the speed of inserting a weight material to reduce the production cost and ensure the quality of products.

Background

For various exercise machines currently on the market, for example: cycling exercise equipment, arm trainers … …, etc., are expensive to purchase and are rather bulky and not well suited for use in ordinary homes. The dumbbell has small volume, is easy to store, can be purchased without spending much money, is not limited by space, and can be used for weight training of multiple parts of the body to exercise the body at any time, so the dumbbell becomes one of the fitness equipment commonly used by the general public.

The existing dumbbell is manufactured and molded integrally by cast iron, and the common dumbbell is mainly formed by blowing plastic into a fixed shape, pouring cement into a small opening at one end of the dumbbell, and sealing the small opening by a left cover plate.

However, the blow molded dumbbell has a monotonous appearance and functionality, but it is likely to lose the user's interest and reduce the training effect during use. Moreover, the operation time is long due to the mode of pouring cement into the small opening, and the quality of the product is not easy to control due to the small opening and difficult air discharge. In addition, when the dumbbell has a shape, a pattern or a mark on the appearance and the shape, the pattern or the mark on the left cover plate needs to be corresponding to each other, the dumbbell formed in the above manner is obviously difficult to control and generates large deviation on the alignment accuracy, so that the overall quality is reduced.

Disclosure of Invention

In view of the above, in order to provide a structure different from the prior art and improve the above disadvantages, the inventors of the present invention have made many years of experience and continuous research and development improvements.

To achieve the above objects, the dumbbell of the present invention comprises a main body, a left side end plate and a left cover plate. The body is provided with a holding part, a left accommodating chamber and a right accommodating chamber which are communicated with each other inside and are used for accommodating a counterweight material, and a left opening and a left welding part are formed at one end of the left accommodating chamber; the periphery of one end of the left end plate is welded and combined with a left welding part of the left containing chamber to seal the left opening, and the plate surface of the left end plate is provided with a plurality of first positioning parts; and the left cover plate is connected with the other end of the left end plate.

When the positioning device is used, a plurality of second positioning parts are arranged on one end face of the left cover plate and are respectively positioned on the plurality of first positioning parts so as to connect the left cover plate and the left end plate.

When the positioning structure is implemented, the first positioning parts are a plurality of positioning holes annularly surrounding the left end plate surface, and the second positioning parts are at least two clamping tenons capable of being selectively clamped and positioned in the positioning holes.

When the device is used, the outer periphery of the left accommodating chamber of the body is provided with a first marking part, and one end face of the left cover plate is provided with a second marking part corresponding to the first marking part.

When the device is implemented, the left opening is circular, the left accommodating chamber is cylindrical, and the diameter of the left opening is equal to the inner diameter of the left accommodating chamber; the board surface of the left side end plate is provided with a left through hole penetrating through the board surface.

When the positioning device is implemented, the positioning device further comprises a right side end plate and a right cover plate, wherein a right opening and a right welding part are formed at one end of the right accommodating chamber, the periphery of one end of the right side end plate is welded and combined with the right welding part of the right accommodating chamber to seal the right opening, a plurality of third positioning parts are arranged on the plate surface of the right side end plate, and the right cover plate is connected to the other end of the right side end plate.

When the positioning device is used, a plurality of fourth positioning parts are arranged on one end face of the right cover plate and are respectively positioned on the plurality of third positioning parts so as to connect the right cover plate and the right end plate.

When the positioning structure is implemented, the third positioning parts are a plurality of positioning holes annularly surrounding the right end plate surface, and the fourth positioning parts are at least two clamping tenons capable of being selectively clamped and positioned in the positioning holes.

When the tool is used, the outer periphery of the right accommodating chamber of the body is provided with a third marking part, and one end face of the right cover plate is provided with a fourth marking part corresponding to the third marking part.

When the device is used, the right opening is circular, the right accommodating chamber is cylindrical, the diameter of the right opening is equal to the inner diameter of the right accommodating chamber, and a right through hole penetrating through the plate surface is formed in the plate surface of the right end plate.

An advantage of the present invention is to provide a dumbbell, which can solve the problem of monotonous appearance of a conventional dumbbell by sequentially connecting an end plate and a cover plate to at least one end of a body, and can improve purchasing and using interests of a user and continuously train an effect by making the body, the end plate and the cover plate of different materials and colors as required.

One advantage of the present invention is to provide a dumbbell, wherein an end plate and a cover plate are sequentially connected to at least one end of a body, a large opening is formed in the front of the end plate connected to the at least one end of the body, and a through hole is formed in the surface of the end plate, so that the problems that cement is not easily poured into the existing dumbbell and the quality of the product is not easily controlled can be solved, the operation speed of accommodating the weight material can be increased to reduce the production cost, and the quality of the product can be ensured.

An advantage of the present invention is to provide a dumbbell, which can solve the problem that the existing dumbbell is not easily adapted to the shape, pattern or mark of the body and the cover plate by providing a structure on the end plate and the cover plate for selectively positioning the cover plate, and align the shape, pattern or mark of the body and the cover plate after the end plate and the body are formed, so that the overall shape is beautiful and uniform, thereby ensuring the quality.

To facilitate a more thorough understanding of the present invention, the following detailed description is provided:

drawings

Fig. 1 is an exploded view of the components of the preferred embodiment of the present invention.

Fig. 2 is a perspective view of the preferred embodiment of the present invention.

FIG. 3 is a sectional view of a part of the device assembly according to the preferred embodiment of the present invention.

Description of reference numerals: a dumbbell 1; a body 2; a left chamber 21; a first indicating portion 211; a left opening 212; a left fusion splice 213; a grip portion 22; a right chamber 23; a third indicating portion 231; a right opening 232; a right fusion spliced portion 233; a left end plate 3; a right small diameter portion 31; a left through hole 32; a left circular groove 33; the first positioning portion 34; large-diameter

inner holes

341, 441;

minor diameter bores

342, 442; a right end plate 4; a left small diameter portion 41; a right through hole 42; a right circular groove 43; a third positioning portion 44; a left cover plate 5; a second indicating portion 51; a right projecting circular tube 52; the second positioning portion 53; a right cover plate 6; a fourth indicating section 61; a left projecting circular tube 62; the fourth positioning portion 63; a weight material 9.

Detailed Description

The dumbbell mainly comprises a body, a left end plate and a left cover plate. The body is provided with a holding part, a left accommodating chamber and a right accommodating chamber which are communicated with each other inside and are used for accommodating a counterweight material, and a left opening and a left welding part are formed at one end of the left accommodating chamber; the periphery of one end of the left end plate is welded and combined with a left welding part of the left containing chamber to seal the left opening, and a left through hole penetrating through the plate surface is formed in the plate surface of the left end plate; and the left cover plate is connected to the other end of the left end plate.

Referring to fig. 1-3, a preferred embodiment of a dumbbell 1 according to the present invention includes a body 2, a left end plate 3, a right end plate 4, a left cover plate 5, and a right cover plate 6. The body 2, left end plate 3 and right end plate 4 are preferably injection molded from a thermoplastic such as Polypropylene (PP).

The formed body 2 has a left chamber 21, a holding portion 22 and a right chamber 23 which are sequentially communicated with each other. Wherein, the left chamber 21 and the right chamber 23 are respectively cylindrical, four concave-convex surfaces surrounding the left chamber 21 are arranged on the outer periphery of the left chamber 21 to prevent the body 2 from rolling, and the concave-convex surfaces are used as the first marking part 211; the left end of the left chamber 21 forms a circular left opening 212, and the diameter of the left opening 212 is approximately equal to the inner diameter of the left chamber 21; the left end of the left chamber 21 is radially recessed with a left circular groove having a diameter larger than that of the left opening 212, which serves as the left weld 213. The outer periphery of the right accommodating chamber 23 is provided with four concave-convex surfaces surrounding the right accommodating chamber 23 and corresponding to the four first indicating portions 211 respectively, and the concave-convex surfaces are used as third indicating portions 231; a circular right opening 232 is formed at the right end of the right accommodating chamber 23, and the diameter of the right opening 232 is approximately equal to the inner diameter of the right accommodating chamber 23; the right end of the right accommodating chamber 23 is radially recessed with a right circular groove having a diameter larger than that of the right opening 23, which serves as the right fusion part 233.

The left end plate 3 and the right end plate 4 are circular plates, wherein a right small diameter portion 31 is formed at the periphery of the right end of the left end plate 3, a left through hole 32 and a left circular groove 33 are formed in the center of the plate surface of the left end plate 3, the left through hole 32 penetrates through the plate surface and is located on the same axis, and the diameter of the left through hole 32 is smaller than that of the left circular groove 33. The other area of the plate surface of the left end plate 3 is provided with a plurality of positioning holes which annularly surround the left through hole 32 and penetrate through the plate surface, and the positioning holes are used as first positioning parts 34. Any positioning hole includes a large-diameter inner hole 341 and a small-diameter inner hole 342 which are coaxial and communicate from left to right, so that when a fixture is used to penetrate at least two positioning holes to clamp the left end plate 3, the right small-diameter portion 31 on the right end edge of the left end plate 3 is welded to the left welding portion 213 of the left accommodating chamber 21 by high-speed rotation welding, so as to close the left opening 212.

The left end periphery of the right side end plate 4 forms a left small diameter part 41, the center of the plate surface of the right side end plate 4 is provided with a right through hole 42 and a right circular groove 43 which penetrate through the plate surface and are on the same axis, and the diameter of the right through hole 42 is smaller than that of the right circular groove 43. The other area of the plate surface of the right end plate 4 is provided with a plurality of positioning holes which annularly surround the right through hole 42 and penetrate through the plate surface, and the positioning holes are used as third positioning parts 44. Any of the positioning holes includes a large-diameter inner hole 441 and a small-diameter inner hole 442 which are coaxial and communicate from right to left. After the weight material 9 such as cast iron block or cement block is accommodated in the body 2, a jig is used to penetrate at least two third positioning portions 44 to clamp the right end plate 4, and then the left small-diameter portion 41 at the left end of the right end plate 4 is welded to the right welding portion 233 of the right accommodating chamber 23 by high-speed rotation welding, so as to close the right opening 232.

Because the center of the plate surface of the left end plate 3 is provided with the left through hole 32 and the left circular groove 33 which have the same axis, and the center of the plate surface of the right end plate 4 is provided with the right through hole 42 and the right circular groove 43 which have the same axis, a small amount of the counterweight material 9 can be respectively put into the through holes as required to balance the weight of the left side and the right side of the body 2.

The left cover plate 5 and the right cover plate 6 are respectively circular plates, wherein the left end surface of the left cover plate 5 is provided with a second marking part 51, and the center position of the right end surface of the left cover plate 5 is provided with a right protruding circular tube 52 for passing through and positioning in the left through hole 32 and the left circular groove 33 of the left end plate 3; five clamping tenons protruding rightwards are annularly arranged on the right end face of the left cover plate 5 and clamped and positioned in five corresponding positioning holes of the left end plate 3, and the clamping tenons serve as second positioning portions 53. In practice, the number of the second positioning portions 53 may also be at least two, and the corresponding positioning holes may also be clamped and positioned, so that the left cover plate 5 is covered and connected to the left end surface of the left end plate 3, and the second marking portion 51 may be adjusted to the position corresponding to the first marking portion 211 on the outer periphery of the left accommodating chamber 21 as required because the second positioning portions 53 of the left cover plate 5 may be selectively clamped and positioned to the corresponding positioning holes of the left end plate 3.

The right end face of the right cover plate 6 is provided with a fourth marking part 61, and the center position of the left end face of the right cover plate 6 is provided with a left protruding round pipe 62 which is used for penetrating and positioning in the right through hole 42 and the right round groove 43 of the right end plate 4; five clamping tenons protruding leftwards are annularly arranged on the left end face of the right cover plate 6 and clamped and positioned in five corresponding positioning holes of the right end plate 4, and the clamping tenons serve as fourth positioning portions 63. In practice, the number of the fourth positioning portions 63 may also be at least two, and the corresponding positioning holes may also be clamped and positioned, so that the right cover plate 6 is covered and connected to the right end surface of the right end plate 4, and the fourth indicating portion 61 may be adjusted to the position corresponding to the third indicating portion 231 on the outer periphery of the right accommodating chamber 23 as required because the corresponding positioning holes of the right end plate 4 may be selectively clamped and positioned by the fourth positioning portions 63 of the right cover plate 6.

Therefore, the invention has the following advantages:

1. the present invention connects the end plate and the cover plate in sequence at the left and right ends of the body, so that the body, the end plate and the cover plate can be made of different materials and colors according to requirements, thereby increasing the purchasing and using interests of users and keeping the training effect.

2. One end of the body of the invention is provided with a large opening, therefore, the counterweight material can be put in before the end plate is fused, thereby increasing the operation speed and reducing the production cost.

3. The cover plate of the invention is provided with at least two convex clamping tenons, and the end plate is provided with a plurality of positioning holes which are arranged in a ring shape, therefore, after the end plate and the body are formed, the clamping tenons of the cover plate can be selectively positioned on the positioning holes of the end plate, so that the shapes, patterns or marks on the body and the cover plate are aligned, and the integral shape is beautiful and consistent, thereby ensuring the product quality.

4. The center of the plate surface of the left side end plate is provided with the left through hole and the left circular groove, and the center of the plate surface of the right side end plate is provided with the right through hole and the right circular groove, so that the placing amount of small counter weight materials can be respectively adjusted as required when the weights on the left side and the right side of the body are unbalanced, and the weight of the whole body is balanced.

In summary, the present invention provides a dumbbell which can not only effectively increase the purchasing and using interests of users, continue training, reduce the production cost by fast processing, but also ensure the overall weight balance distribution and beautiful appearance to ensure the product quality, and has great industrial value.

Claims

1. A dumbbell, comprising:

a body, which is provided with a holding part, a left containing chamber and a right containing chamber which are communicated with each other inside and are used for containing a counterweight material, wherein one end of the left containing chamber is provided with a left opening and a left welding part;

the periphery of one end of the left side end plate is welded with the left welding part of the left accommodating chamber to seal the left opening, and the plate surface of the left side end plate is provided with a plurality of first positioning parts; and

and one end face of the left cover plate is provided with a plurality of second positioning parts for being respectively positioned on the plurality of first positioning parts so as to connect the other ends of the left cover plate and the left end plate.

2. The dumbbell of claim 1, wherein the first plurality of positioning portions are a plurality of positioning holes annularly encircling the left end plate surface, and the second plurality of positioning portions are at least two clamping tenons selectively clamped and positioned in the positioning holes.

3. The dumbbell of claim 1 or 2, wherein the outer periphery of the left chamber of the body is provided with at least one first indication portion, and one end face of the left cover plate is provided with a second indication portion corresponding to the first indication portion.

4. The dumbbell of claim 1, wherein the left opening is circular and the left chamber is cylindrical, the left opening having a diameter equal to an inner diameter of the left chamber; the board surface of the left side end plate is provided with a left through hole which penetrates through the board surface.

5. The dumbbell of claim 1, further comprising a right side end plate and a right cover plate, wherein one end of the right chamber forms a right opening and a right welding portion, the right welding portion of the right chamber is welded to the periphery of one end of the right side end plate for sealing the right opening, the third positioning portions are disposed on the plate surface of the right side end plate, and the right cover plate is connected to the other end of the right side end plate.

6. The dumbbell of claim 5, wherein a plurality of fourth positioning portions are provided on one end surface of the right cover plate for positioning on the plurality of third positioning portions, respectively, to connect the right cover plate and the right end plate.

7. The dumbbell of claim 6, wherein the third positioning portions are positioning holes annularly encircling the right end plate surface, and the fourth positioning portions are at least two locking tenons selectively locked in the positioning holes.

8. The dumbbell of claim 6 or 7, wherein the right chamber of the body is provided at an outer periphery thereof with at least a third indication portion, and the right cover plate is provided at an end surface thereof with a fourth indication portion corresponding to the third indication portion.

9. The dumbbell of claim 5, wherein the right opening is circular and the right chamber is cylindrical, the right opening having a diameter equal to an inner diameter of the right chamber; the board surface of the right side end plate is provided with a right through hole penetrating through the board surface.