CN202569295U

CN202569295U - Dumbbell

Info

Publication number: CN202569295U
Application number: CN 201220120960
Authority: CN
Inventors: 翁欲嘉
Original assignee: 翁欲嘉
Current assignee: Shenzhen Longgang District Longcheng Elementary School
Priority date: 2012-03-27
Filing date: 2012-03-27
Publication date: 2012-12-05
Anticipated expiration: 2022-03-27

Abstract

The utility model discloses a dumbbell which comprises a handle, more than two counter weights, two self-locking pieces and two thrust springs. A first screw joint portion is arranged at each of two ends of the handle, a second screw joint portion capable of being screwed on the corresponding first screw joint portion is arranged on each counter weight, each self-locking piece is provided with a third screw joint portion capable of being screwed on the corresponding first screw joint portion, one end of each thrust spring butts against the corresponding counter weight, and the other end of each thrust spring butts against the corresponding self-locking piece. By the aid of self locking of the self-locking pieces, the counter weights can be mounted and demounted simply, and hidden danger of falling of the counter weights is eliminated.

Description

A kind of dumbbell

Technical field

The utility model relates to a kind of athletic sports appliance, relates in particular to a kind of dumbbell.

Background technology

Dumbbell is a kind of sports equipment of strength building, and profile is identical with barbell, but volume and quality be less than barbell, and main material is a cast iron.Because of motor paralysis, pain, long-term immobilization etc. cause the low patient of muscular strength, hand-held dumbbell, the weight of dumbbell capable of using is carried out the resistive drag force active movement, the training muscular strength.Dumbbell can be trained single muscle; As gain in weight, then need the coordination of a plurality of muscle, also can be used as a kind of muscle composite move training.Dumbbell comprises handle and the counterweight that is consolidated, and can be divided into different credit ratings according to the size of weight mass.So the counterweight of different training need different quality sizes is the dumbbell that general athletic training need have a plurality of different weight mass simultaneously.Because the dumbbell quality is bigger, be difficult for carrying, so prior art provides some counterweights demountable dumbbell, satisfy the demand through the counterweight of combination different quality.But because when using, dumbbell is in the state of continuous motion, but how to realize fixed weight preferably, reduce badly easily the user to be produced injury because counterweight is fixing, be the insurmountable problem of prior art always.For this reason, prior art has necessity of further improvement.

The utility model content

The technical problem that the utility model will solve is to provide a kind of dumbbell, can be well the counterweight on the solid dumbbell removably, eliminate counterweight and fall and human body is produced the hidden danger of injury.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: construct a kind of dumbbell; Comprise handle and plural counterweight; Also comprise two self-locking bodies and two thrust springs; The two ends of said handle have first screw part respectively, have second screw part that can screw on said first screw part on the said counterweight, and said self-locking body has the 3rd screw part that can screw on said first screw part; Said thrust spring one end is against said counterweight, and the other end is against said self-locking body.

In this dumbbell of the utility model, said thrust spring has big end and small end, and the diameter of said big end is greater than the diameter of said small end, and said big end is resisted against on the said counterweight, and said small end is resisted against on the said self-locking body.

In this dumbbell of the utility model, said self-locking body also has a pair of ear, and said ear is symmetrically distributed on the said self-locking body.

In this dumbbell of the utility model, said first screw part has external screw thread, the internal thread that said second screw part and the 3rd screw part have equal diameters.

The beneficial effect of implementing this dumbbell of the utility model is: because self-locking can be realized with first screw part in the 3rd threaded portion; So self-locking body can well be fixed on the handle; And counterweight is arranged between the self-locking body; So the position also has been determined, realized dismantled and assembled simultaneously easily, reduced counterweight because the fixing bad possibility that comes off in the use of causing.

Description of drawings

To combine accompanying drawing and embodiment that the utility model is described further below, in the accompanying drawing:

Fig. 1 is the sketch map of a kind of embodiment of dumbbell of the utility model;

Fig. 2 is a kind of partial exploded view of Fig. 1:

Fig. 3 is the explosive view of the another kind of embodiment of dumbbell of the utility model;

Fig. 4 is the half sectional view of Fig. 3.

Part description of reference numerals: handle 1, first screw part 101, counterweight 2, second screw part 201, self-locking body 3, the 3rd screw part 301, ear 302, thrust spring 4.

The specific embodiment

The embodiment that Fig. 1, Fig. 2 provide for the utility model, this dumbbell of the utility model comprise handle 1, three pairs of counterweights 2, a pair of self-locking body 3 and thrust springs 4.

The two ends of handle 1 have first screw part 101 respectively, and the centre has arc convex.

Counterweight 2 is circular, and the centre has second screw part 201 that can screw on first screw part 101.

Self-locking body 3 has the 3rd screw part 301 that can screw on first screw part 101.In addition, self-locking body 3 has a pair of ear 302, and ear 302 persons easy to use apply external force on self-locking body 3.

First screw part 101 has external screw thread, the internal thread that second screw part 201 and the 3rd screw part 301 have equal diameters.

Thrust spring 4 one ends are against counterweight 2, and the other end is against self-locking body 3.The internal diameter of thrust spring 4 is greater than the diameter of first screw part 101 and less than the external diameter of outermost counterweight 2.

In the assembling process, successively counterweight 2, thrust spring 4, self-locking body 3 are installed on first screw part 101, tighten self-locking body 3, make thrust spring 4 apply tension force in self-locking body 3 and counterweight 2.The 3rd screw part 301 on the self-locking body 3 can be fixed on first screw part 101 under self-locking action, and then makes counterweight 2 also be fixed.In unloading process, directly self-locking body 3 back-outs are got final product.

Another embodiment that Fig. 3 and Fig. 4 provide for the utility model.Wherein three pairs of counterweights 2 have identical diameter and quality.In the present embodiment; Because counterweight 2 diameters and self-locking body 3 diameters differ bigger; So the thrust spring 4 that can adopt diameter not wait, this thrust spring 4 has big end and small end, and the diameter of big end is greater than the diameter of small end; Big end is resisted against counterweight 2 roughly on the position intermediate, and small end is resisted against self-locking body 3 roughly on the position intermediate.This scheme can be so that counterweight 2 stressed more even have increased counterweight 2 fixation stability property.

More than be merely the preferred embodiment of the utility model,, any modification of being done in all spirit at the utility model and the principle, be equal to and replace or improvement etc., all should be included in the protection domain of the utility model not in order to restriction the utility model.

Claims

1. a dumbbell comprises handle and plural counterweight, it is characterized in that; Also comprise two self-locking bodies and two thrust springs; The two ends of said handle have first screw part respectively, have second screw part that can screw on said first screw part on the said counterweight, and said self-locking body has the 3rd screw part that can screw on said first screw part; Said thrust spring one end is against said counterweight, and the other end is against said self-locking body.

2. dumbbell according to claim 1; It is characterized in that said thrust spring has big end and small end, the diameter of said big end is greater than the diameter of said small end; Said big end is resisted against on the said counterweight, and said small end is resisted against on the said self-locking body.

3. dumbbell according to claim 1 is characterized in that said self-locking body also has a pair of ear, and said ear is symmetrically distributed on the said self-locking body.

4. dumbbell according to claim 1 is characterized in that, said first screw part has external screw thread, the internal thread that said second screw part and the 3rd screw part have equal diameters.