CN2158738Y

CN2158738Y - Double shock-absorpting disc of barbell

Info

Publication number: CN2158738Y
Application number: CN 93216886
Authority: CN
Inventors: 张志明; 张保银; 张志国
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-06-28
Filing date: 1993-06-28
Publication date: 1994-03-16
Anticipated expiration: 2003-06-28

Abstract

The utility model relates to a double shock absorption integral barbell disc. An iron core is embedded between an inner elastic sleeve body and an outer elastic sleeve body. An inner hole which is sheathed with the sleeve barrel of a barbell bar is provided with a non-metallic shaft sleeve which adheres with the inner elastic sleeve body. The shaft sleeve, the inner elastic sleeve body, the outer elastic sleeve body and the annular iron core as a framework and a weight are integrally-shaped. Both sides of the axial direction of the outer elastic sleeve body are respectively provided with an annular concave groove, the outer part of the annular concave groove is wide, and the inner part of the annular concave groove is narrow. The annular concave groove leads the cross section of the outer elastic sleeve body to be trapezoidal, which can play a better decomposition effect on vertical force. The outer part of the whole body is coated with glue, which avoids the knocking and the noise along the axial direction between the barbell discs. The periphery of the inner part of the iron core and the periphery of the outer part of the iron core are respectively provided with embedding ribs which can reinforce binding force and are embedded in the inner elastic sleeve body and the outer elastic sleeve body.

Description

Double shock-absorpting disc of barbell

The utility model relates to a kind of physical culture apparatus, particularly a kind of double damping monoblock type disc.

The structure of present comparatively advanced disc as shown in Figure 1, it is by a metal basal disc 1 with bar sleeve movable set, the button dish 2 that is sleeved on the monomer resilient sleeve 3 in metal basal disc 1 outer shroud and links in basal disc 1 one sides assembles, button dish 2 and metal basal disc 1 adopts and is threaded, and the resilient sleeve 3 after the assembling is put by card and is fixed on metal basal disc 1 and coils in the 2 formed U-loop grooves 4 with button.Because disc is the critical piece in the barbell, therefore, its service life, intensity, shock resistance vibratility and weight error all there is strict requirement.

And disc shown in Figure 1 exists following shortcoming and problem.

First: be threaded because button dish 2 adopts with basal disc, when falling to throw away, disc then is subjected to very big radial effect power and vibrations in the use, and this radial effect power still has quite a few to be delivered to the threaded connection place through behind the bumper and absorbing shock of resilient sleeve 3, because the threaded connection place is that metal contacts with the rigid of metal, adding active force is frequent impact load, therefore, the part that is threaded easily produces loosening, thread off, even fracture, behind thread looseness, then cause the axially outer of button dish 2 to move, the resilient sleeve 3 that not only can make overcoat is beat vertically, weight is unbalance when causing weight lifting, and easily is created in deviating from of informal when exercise disc part, because when informal exercise, sometimes the convenience for increase and decrease weight does not add the barbell locker, so disc is not located vertically.No matter be deviating from of the unbalance or disc part of weight, all badly influence athletic personal safety.Threading off also to produce above-mentioned similar problem, and makes whole disc scrap and can't use.The increase and the shortening in disc life-span of training expenses have been caused.

Second: because the Qian shape annular groove 31 of the axial both sides of resilient sleeve 3 is the right-angle structure of equal thickness, therefore, itself can producing after resilient sleeve 3 is stressed laterally expands becomes, and the annular edge of the Qian shape annular groove 4 that constitutes with metal basal disc and button dish folder puts mill along generation, and resilient sleeve root 32 is damaged, and not only influences the weight of disc, and U-loop groove 4 and its gap are constantly increased, add resilient sleeve and U-loop groove and exist assembling and vibration damping gap, therefore, have bigger vibrating noise in use.

The 3rd: because the inner peripheral surface of the axial both sides of disc is hard metal, therefore, when putting a plurality of disc, the noise that collides with mutually is very big.

The purpose of this utility model just is to overcome the above-mentioned shortcoming and defect of existing in prior technology, and provides a kind of all-in-one-piece, is provided with the double damping monoblock type disc of double-deck elastomer cushion.

The purpose of this utility model is to realize by following technical scheme:

Between inside and outside elasticity body, be embedded with iron core, being provided with the adhesion of interior elasticity body with the endoporus place of bar sleeve set is the nonmetallic axle sleeve of one, axle sleeve, inside and outside elasticity body and be the global formation structure as skeleton and the ring-type iron core that increases the weight of, outer resilient sleeve axon is provided with annular groove wide outside and narrow inside to both sides, this annular groove makes that outer elasticity body cross section is trapezoidal shape, can play the decomposition of vertical force preferably, the outer encapsulate form of monoblock type has changed the axial noise that collides with between the disc.Periphery is provided with the embedding rib of strengthening in the inside and outside elasticity body of being embedded in of adhesion in the iron core.

Therefore: remarkable result of the present utility model is:

First: the monoblock type cast structure, each parts is closely as one, the loosening problem of the dropout of both having avoided original thread to connect has prevented a part of beat of disc again and the unbalance unsafe problems that causes of weight that produces.

Second: the setting of double-deck elasticity body, played the effect of secondary damping, buffering, can prolong the service life of disc effectively.

The the 3rd: noly between disc itself and adjacent disc rigidly collide with and fall noise when throwing away.

The 4th: the trapezium structure of the outer narrow inner width of outer elasticity body has not only improved the resistance to deformation intensity after outer elasticity body is subjected to vertical, and have the effect that radial effect power is decomposed vertically, can alleviate the active force intensity that acts directly on the bar sleeve.

Concrete structure of the present utility model is to realize by the following examples and accompanying drawing thereof:

Fig. 1 is the section of structure of existing disc.

Fig. 2 is a section of structure of the present utility model.

Describe in detail below in conjunction with 2 pairs of concrete structures of the present utility model of accompanying drawing:

The utility model has the middle part to have the disc of trepanning 8, there is an outer elasticity body 3 the outer border of disk body, outer elasticity body 3 axial both sides are provided with the annular groove 33 of indent, it is characterized in that: between inside and

outside elasticity body

6 and 3, be embedded with metal-cored 5, have at trepanning 8 places one with interior elasticity body 6 mutually embedding connect and with the axle sleeve 7 of bar sleeve movable set, axle sleeve 7, interior elasticity body 6, metal-cored 5 and the outer elasticity body 3 of metal-cored 5 peripheries be monolithic construction.Referring to Fig. 2.

Architectural feature of the present utility model also is:

Metal-cored 5 is a ring disk-like structure, inner rim and neighboring in ring plate-like metal-cored 5 are provided with the radially embedding

rib

51 and 52 of projection, in embedding

rib

51 and 52 intercalations are gone among elasticity body 6 and the outer elasticity body 3 and in making,

outer elasticity body

3,6 and be positioned at its middle part the ring plate-like metal-cored 5 the cast adhesions be an overall structure, axle sleeve 7 is one to have the nylon of convex concave annular groove 71 or the axle sleeve that poly-tetrafluoro is made, the annular groove 33 of outer elasticity body 3 axial both sides indents is that the outer ring is dark, the ramp structure that inner ring is narrow is up-narrow and down-wide trapezoidal corresponding to the cross sectional shape of the elasticity body 3 of annular groove 33 parts.Referring to Fig. 2

The axial both sides of the ring plate-like metal iron core 5 that all-in-one-piece disc inside is embedded into are provided with the spill embedding glue annular groove 53 of indent, embedding

rib

51,52 all is radially outer gibbosity of symmetry up and down, be equipped with the

caulking groove

54 and 55 of indent between axially at embedding

rib

51 and 52, interior elasticity body 6 is included in the both sides and the interior border of ring plate-like metal iron core 5, and outer elasticity body 3 is included in the outer border of ring plate-like metal iron core 5.Referring to Fig. 2

Monolithic construction of the present utility model is the default metal iron core 5 of employing, axle sleeve 7 and then casts or pressure injection high polymer elastic fluid material in die cavity, processes through the sulfuration typing.

Claims

1, double damping monoblock type disc, the utility model has the middle part to have the disc of trepanning (8), there is an outer elasticity body 3 the outer border of disk body, outer elasticity body 3 axial both sides are provided with the annular groove (33) of indent, it is characterized in that: between inside and outside elasticity body (6) and (3), be embedded with metal-cored (5), trepanning (8) locate one with interior elasticity body (6) mutually embedding connect and with the axle sleeve (7) of bar sleeve movable set, the outer elasticity body (3) of axle sleeve (7), interior elasticity body (6), metal-cored (5) and metal-cored (5) periphery is a monolithic construction.

2, according to the described double damping monoblock type of claim 1 disc, it is characterized in that: metal-cored (5) are a ring disk-like structure, inner rim and neighboring in ring plate-like metal-cored (5) are provided with radially embedding rib (51) and (52) of projection, in embedding rib (51) and (52) intercalation are gone among elasticity body (6) and the outer elasticity body (3) and in making, outer elasticity body (3), (6) and ring plate-like metal-cored (5) the cast adhesion that is positioned at its middle part be an overall structure, axle sleeve 7 is one to have the nylon of convex concave annular groove (71) or the axle sleeve that poly-tetrafluoro is made, outer elasticity body (3) the axially annular groove (33) of both sides indent is that the outer ring is dark, the ramp structure that inner ring is narrow is up-narrow and down-wide trapezoidal corresponding to the cross sectional shape of the elasticity body (3) of annular groove (33) part.

3, according to claim 1 or 2 described double damping monoblock type discs, it is characterized in that: the axial both sides of the ring plate-like metal iron core (5) that all-in-one-piece disc inside is embedded into are provided with the spill embedding glue annular groove (53) of indent, embedding rib (51), (52) all are radially outer gibbosity of symmetry up and down, be equipped with caulking groove (54) and (55) of indent between axially in embedding rib (51) and (52), interior elasticity body (6) is included in the both sides and the interior border of ring plate-like metal iron core (5), and outer elasticity body (3) is included in the outer border of ring plate-like metal iron core (5).