CN205019629U - Safety pulley weight - Google Patents

Abstract

The utility model provides a safety pulley weight, including pull ring, spring, the pull ring including detaining the circle, the spring form by spring silk spiral, have and detain the buckle that the circle matches, the helical structure of spring in have a high bearing band, high bearing band for the gridle that meets of final phase of a project, the knot circle round hole that matches with high bearing band has, the pull ring fixing device has, fixing device constitute by fixed axle, circulator, high -elastic band -pass cross the round hole, around on the fixed axle at both ends, fix the fixed axle through the circulator.

Description

A kind of safety pulley weight

Technical field

The utility model relates to chest expander energy expansive approach field, particularly relates to a kind of safety pulley weight.

Background technology

Chest expander is a kind of apparatus being suitable for national physical training and taking exercise.Because it is simple and easy to use, small volume, can uses at home, therefore be subject to extensively liking of people.Generally working clan, does not have the sufficient time to remove body-building shop or outdoor exercise at evening or weekend, then using the utensils such as chest expander to carry out the selection of the best of adaptive physical exercise at home, is also one of the most effective exercising way.Existing chest expander is by spring and pulls and supports draw ring and form, and spring is connected with draw ring by clasp, spring has the stronger coefficient of stiffiness, not easily tensile phenomenon is there is in drawing process, but being connected to of clasp and draw ring easily occurs loosening, aging in Long-Time Service process, cause user to produce spring in drawing process and flick phenomenon.And due to stressed excessive before spring, when flicking, discharge larger power, very easily accidentally injure user, therefore this problems demand solves.

Summary of the invention

For problem mentioned above, in order to avoid the phenomenon using chest expander spring to be separated bullet wound user with draw ring occurs, the utility model provides a kind of safety pulley weight, comprise draw ring, spring, described draw ring comprises buckle ring, described spring is formed by spring wire spiral, has the clasp matched with buckle ring.

Described clasp and buckle ring are for being flexibly connected, and user can perform physical exercise according to the quantity of self-demand mounting spring, also can carry out the renewal of spring according to the degree of aging of spring.

Optimize, have high bearing band in the helical structure of described spring, described high bearing band is the endless belt connected of finishing up, and described buckle ring has the circular hole matched with high bearing band.

Described in any spring, high-elastic band at least has one, also can be many, and user can carry out increasing or reducing according to the service condition of spring.

Optimize, described draw ring has fixture, and described fixture is made up of fixed axis, circulator.Described circulator is specifically made up of rotating nut A and rotating nut B, and described fixed axis two ends have the screw thread matched with rotating nut A and rotating nut B, and described rotating nut A is positioned at draw ring inwall, and described draw ring side has jack.

Described high bearing band passes through circular hole, arrive fixture installing space, described fixed axis inserts in draw ring by jack, through high bearing band, be fixed on fixed axis by high bearing band, one end that fixed axis inserts draw ring is then aimed at rotating nut A and is rotated, and fixed axis and rotating nut A fix after action completes, rotating nut B is rotated to the other end of fixed axis, complete high bearing band fixing.

Optimize, described high bearing band forms by least 2 subbands are twisted, when a subband ruptures, can not have influence on the fracture of other subbands very soon, raising use safety coefficient.

The coefficient of stiffiness of described high bearing band is greater than the coefficient of stiffiness of spring, avoiding user when using chest expander, being broken by high bearing band easily, making high bearing band lose the effect of protection.

Optimize, the spring wire outside of described spring has rubber layer, and described rubber layer inwall has spongy layer.Described rubber layer has certain elasticity, avoids spring rubber surface in drawing process to produce fracture.Described rubber layer and spongy layer effect are: when the serious misoperation of user, cause spring and draw ring when powerful External Force Acting flicks phenomenon, and rubber layer and spongy layer can be alleviated by the active force of impact object.

The beneficial effects of the utility model:

By the technological improvement that the utility model carries out common chest expander, cost increases not obvious, is connected, forms independently fixed form by the high bearing band in spring with the carrying out of draw ring inner fixing device.When under powerful External Force Acting, spring is separated with draw ring, and high bearing band still can be fixed on draw ring, and spring can not be flown out by bullet, accidentally injures user or periphery personnel.

Accompanying drawing explanation

The safety pulley weight overall structure schematic diagram that Fig. 1 provides for the utility model preferred embodiment.

Fig. 2 is the sectional view of the utility model spring wire.

Detailed description of the invention

Below in conjunction with accompanying drawing, the present embodiment is described further.

Refer to Fig. 1 to Fig. 2, the utility model that the utility model preferred embodiment provides provides a kind of safety pulley weight, comprise chest expander 100 body, described chest expander also comprises draw ring 10, spring 20, described draw ring 10 comprises buckle ring 11, described spring 20 is formed by spring wire spiral, has the clasp 21 matched with buckle ring 11.

Described clasp 21 and buckle ring 11 are for being flexibly connected, and user can perform physical exercise according to the quantity of self-demand mounting spring 20, also can carry out the renewal of spring 20 according to the degree of aging of spring 20.

Further, have high bearing band 22 in the helical structure of described spring 20, described high bearing band 22 is the endless belt connected of finishing up, and described buckle ring 11 has the circular hole (not shown) matched with high bearing band 22.

Described in any spring 20, high bearing band 22 at least has one, also can be many, and user can carry out increasing or reducing according to the service condition of spring 20.

Further, described draw ring 10 has fixture 12, and described fixture 12 is made up of fixed axis 121, circulator.Described circulator is specifically made up of rotating nut A122 and rotating nut B123, described fixed axis 121 two ends have the screw thread matched with rotating nut A122 and rotating nut B123, described rotating nut A122 is positioned at the inwall of draw ring 10, and described draw ring 10 side has jack (not shown).

Further high bearing band 22 passes through circular hole, arrive fixture 12 installing space, it is inner that described fixed axis 121 inserts draw ring 10 by jack, through high bearing band 22, be fixed on fixed axis 121 by high bearing band 22, one end that fixed axis 121 inserts draw ring 11 inside is then aimed at rotating nut A122 and is rotated, and fixed axis 121 and rotating nut A122 fix after action completes, rotating nut B123 is rotated to the other end of fixed axis 121, complete high bearing band 22 fixing.

Further, described high bearing band 22 forms by least 2 subbands are twisted, when a subband ruptures, can not have influence on the fracture of other subbands very soon, improves use safety coefficient.

The coefficient of stiffiness of further high bearing band 22 is greater than the coefficient of stiffiness of spring 20, avoiding user when using chest expander 100, being broken by high bearing band 22 easily, making high bearing band 22 lose de-protected effect.

Further, the spring wire outside of described spring 20 has rubber layer 23, and described rubber layer 23 inwall has spongy layer 24.Described rubber layer 23 has certain elasticity, avoids spring 20 rubber layer 23 surface in drawing process to produce fracture.Described rubber layer 23 and spongy layer 24 effect are: when the serious misoperation of user, and cause spring 20 and draw ring 10 when powerful External Force Acting flicks phenomenon, rubber layer 23 and spongy layer 24 can be alleviated by the active force of impact object.

By the technological improvement that the utility model carries out common chest expander, cost increases not obvious, is connected, forms independently fixed form by the high bearing band 22 in spring 20 with the carrying out of draw ring inner fixing device 12.When under powerful External Force Acting, spring 20 is separated with draw ring 10, and high bearing band 22 still can be fixed on draw ring 10, and spring 20 can not be flown out by bullet, accidentally injures user or periphery personnel.

The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.

Claims (4)

1. a safety pulley weight, comprises draw ring, spring, and described draw ring comprises buckle ring, and described spring is formed by spring wire spiral, has the clasp matched with buckle ring, it is characterized in that:

Have high bearing band in the helical structure of described spring, described high bearing band is the endless belt connected of finishing up, and described buckle ring has the circular hole matched with high bearing band;

Described draw ring has fixture, and described fixture is made up of fixed axis, circulator; Described high bearing band, by circular hole, around on the fixed axis at two ends, is fixed fixed axis by circulator.

2. safety pulley weight according to claim 1, is characterized in that: described high bearing band forms by least 2 subbands are twisted.

3. safety pulley weight according to claim 1, is characterized in that: the spring wire outside of described spring has rubber layer.

4. safety pulley weight according to claim 3, is characterized in that: described rubber layer inwall has spongy layer.