CN2668171Y

CN2668171Y - Back device for body-building apparatus

Info

Publication number: CN2668171Y
Application number: CNU2003201232747U
Authority: CN
Inventors: 刘严雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-22
Filing date: 2003-12-22
Publication date: 2005-01-05
Anticipated expiration: 2013-12-22

Abstract

The utility model relates to an exercising apparatus, in particular to a back device for body-building apparatus, including a back and a bracket. The essential structure is that the back device for body-building apparatus also includes an oscillating axle and a clamping block, and the back and the bracket are hinged, with a hinging center A provided. A plurality of clamping slots distributed at intervals along an arc line are provided on the oscillating axle, the center of circle of the arc line is the hinging center A, the oscillating axle and the back are fixedly connected, and a distance is provided between the fixed connection point of the oscillating axle and the back and the hinging center A. The clamping block and the bracket are movably connected, and synchronously one end of the clamping block and the clamping groove are clamped and connected. The utility model has the advantages of that by that the back and the bracket are hinged, the back can swing and adjust angular position with the hinging point of the back and the bracket referred, after the angular position is adjusted well, orientation and connection can be done by the clamping block and the bracket, and accordingly the utility model can be adapted to the shapes and sport requirements of different body-building persons, which brings convenience to the body-building persons.

Description

The back-rest means for chair of fitness equipment

Technical field

The utility model relates to the back-rest means for chair of a kind of exercising device, particularly a kind of fitness equipment.

Background technology

Most of fitness equipment of the prior art all has a back-rest means for chair, and it includes a backrest and securing member, and backrest is fixedlyed connected with support by securing member.When the people of the different bodily forms uses this fitness equipment, difference because of the bodily form, with the status requirement difference that causes back-rest means for chair, but back-rest means for chair because of with fixedlying connected of support can't corresponding adjustment position, thereby the needs that can't adapt to the various different bodily forms of body-building personnel make the user of fitness equipment very inconvenient.

Invention constitutes

The purpose of this utility model is to overcome weak point of the prior art and a kind of easy to use, the back-rest means for chair that can regulate the fitness equipment of position of back is provided.

The purpose of this utility model realizes by following approach:

The back-rest means for chair of fitness equipment, include backrest and support, its structural feature is, also includes swing span and fixture block, and backrest and support are hinged and have a hinged center of A, have a plurality of on the swing span along a kind of camber line draw-in groove spaced apart, the center of circle of this camber line is the hinged center of A, and swing span is fixedlyed connected with backrest, and its fixed connection point and A have distance between the hinged center, fixture block and support flexibly connect, simultaneously an end and the draw-in groove clamping of fixture block.

Like this, backrest can be that fulcrum is swung with the hinged center of A, be that backrest can be that fulcrum carries out angle displacement with the hinged center of A, and a plurality of draw-in grooves of swing span carry out a plurality of adjustment points of angle displacement as backrest, each is adjusted point and is angle displacement of representative, clamping by fixture block and draw-in groove can be positioned on some adjustment points backrest then, this moment, swing span was the bracing frame of backrest, fixture block then is a kind of detachable or mobilizable fastener, as: pin, bolt etc., it plays the location, therefore can carry out the adjustment and the location of a plurality of angles between backrest and the support, thereby the needs that adapt to various different body-building personnel's the bodily form have made things convenient for the user of fitness equipment.

Swing span and fixture block can have following several selection:

Swing span is a kind of rotating disk that is the fan annular, and fixture block is a kind of latch, and have a positioning through hole, the center line of this positioning through hole and the central lines of draw-in groove swing span on the support this moment, latch interted this positioning through hole, and with the draw-in groove clamping of swing span.

This is a kind of localization method of latch, puts an angle when backrest drives rotating disk, just moves past certain angular displacement, must find the draw-in groove of the central lines of a center line and positioning through hole, and then position connection by latch.In the process of backrest swing, latch can be extracted with draw-in groove and separate, and adjust angle to make things convenient for backrest, thereby the body-building personnel that adapt to the different bodily forms uses.

Swing span can also be fan-shaped rotating disk for a kind of, and fixture block is a kind of latch, and have a locating slot on the support this moment, and latch can be connected in the draw-in groove and the locating slot on the support of rotating disk simultaneously.

In the process of backrest swing, latch can be taken out from draw-in groove and locating slot, after adjusting angle, again latch is connected in the draw-in groove and locating slot of rotating disk, to play the effect of location position of back.

Swing span can also be a kind of ratchet, and the teeth groove that distributes on it is a draw-in groove, and fixture block is a kind of ratchet, and ratchet one end and support are hinged, the teeth groove clamping of the other end and ratchet.

The teeth groove here is meant the recessed formed groove of the adjacent two-wheeled between cog of ratchet.Because ratchet can one-directional rotation, and ratchet is used to prevent the ratchet reversed turning, therefore backrest can drive ratchet toward swinging along (contrary) hour hands, after backrest is adjusted the angle position, ratchet just can block the gear teeth of relevant position, preventing the ratchet reversed turning, thereby backrest is positioned on the required angle position.

Can also be: be intervally distributed with a plurality of button circles on the swing span as draw-in groove, and fixture block is a kind ofly to have contact with and be movably arranged on the support, has contact with and can hook the button circle to play the effect of location backrest.Certainly based on the theory described in the utility model, those skilled in the art can also have a lot of attainable modes, as space is limited, repeats no more.

The utility model can further be specially:

Support can be the trunk support body of fitness equipment.

Support can also be:

Support comprises pole and fixed mount, and pole and backrest are hinged and have the hinged center of A, and pole is connected with fixed mount, and fixture block and pole flexibly connect.

The fixed mount here can be the trunk support body of fitness equipment.Pole can be to fixedly connected with fixed mount, as being undertaken fixedly connected by securing member; Also can be to flexibly connect, this flexible connection can be to removably connect, and also can be to connect by active connection, as:

Pole flexibly connects by a sleeve pipe and fixed mount.

Sleeve pipe comprises latch, inner sleeve and outer tube, outer tube is connected with fixed mount, the inner sleeve cover is inserted in the inner chamber of outer tube, and have outside the protruding sleeve pipe that exposes outside of an end, pole is fixed on the outer end of the protruding sleeve pipe that exposes outside of inner sleeve, be intervally distributed with a plurality of hole slots on the inner sleeve, outer tube then has a locating hole, simultaneously the center line of locating hole can with the centerline of any one hole slot on same straight line, latch one end and locating hole flexibly connect, and the other end then is plugged in the hole slot of inner sleeve.

Because having the backrest of swing span is connected with pole, and pole fixedlys connected with inner sleeve, inner sleeve and outer tube pivot bush unit, outer tube is connected with support, thereby has formed following motion sequence: pole and support are on the relatively-stationary position, when inner sleeve is mobile in outer tube, just can drive pole and backrest moves together, thereby can adjust the front and back position of backrest, and as previously described, backrest can carry out angle adjustment under the effect of swing span, pole and fixture block.So, backrest not only can carry out adjusting on the angle position, can also carry out the adjustment on the front and back position, like this, the body-building personnel just can need compare omnibearing adjustment to backrest at the bodily form and the motion of self, have made things convenient for the body-building personnel that use fitness equipment.

Outer tube can be fixedlyed connected with fixed mount, can also removably connect, when outer tube and support when removably connecting, outer tube can disassemble from a certain position on the support, and the position of other on support is carried out fixedly connectedly then, and whole like this back-rest means for chair just can move up and down on support, so far, back-rest means for chair not only can carry out angle adjustment, can also realize front and back and adjustment up and down, is more convenient for using the body-building personnel of fitness equipment.

In sum, advantage of the present utility model is, by carrying out backrest and support hinged, backrest can be swung with this hinged pin joint like this, and the adjustment angle position, adjust the angle position after, position with support by fixture block again and be connected, thereby adapt to different body-building personnel's the bodily form and motion needs, made things convenient for the body-building personnel.

Description of drawings

Figure 1 shows that the structural representation of the back-rest means for chair of fitness equipment described in the utility model;

Below we are further described the utility model in conjunction with the embodiments.

Specific embodiment

Most preferred embodiment:

Referring to accompanying drawing 1, the back-rest means for chair of fitness equipment includes backrest 1, support 2, swing span 3, fixture block 4 and sleeve pipe 5; Support 2 comprises pole 21 and fixed mount 22, and pole 21 flexibly connects with fixed mount by sleeve pipe 5; Backrest 1 and pole 21 are hinged and have a hinged center of A; Swing span 3 has four along a kind of camber line draw-in groove 31 spaced apart for a kind of rotating disk that is the fan annular on it, the center of circle of this camber line is the hinged center of A, and swing span 3 is fixedlyed connected with backrest 1 simultaneously; Fixture block 4 is a kind of latch (for convenience of description, and do not obscure with following description, claim that this latch is first latch); Have positioning through hole 211, the first latches on the pole 21 and interted this positioning through hole 211, and with swing span 3 on draw-in groove 31 clampings.

Sleeve pipe 5 includes latch 51 (being called second latch), inner sleeve 52 and outer tube 53, inner sleeve 52 covers pass the inner chamber of outer tube 53, simultaneously outside the two ends of the also protruding sleeve pipe 53 that exposes outside in two ends of inner sleeve 52, be intervally distributed with 8 hole slots 521 on the inner sleeve 52,53 of outer tubes have a locating hole 531, simultaneously the center line of locating hole 531 can with the centerline of any one hole slot 521 on same straight line, second latch 51 can be inserted and be through in hole slot 521 and the locating hole 531 with the fixing relative position between inner sleeve 52 and the outer tube 53, plays the role of positioning; Pole 21 fixedlys connected by fastening bolt 6 with an end of inner sleeve 52, when inner sleeve seesaws, can drive pole and backrest moves together.

Be fixedly welded with a steel plate 54 on the outer tube 53, have two through holes 541 on this steel plate 54, and be distributed with 8 positioning hole grooves 221 on the fixed mount 22, distance between two through holes 541 on distance between every adjacent two positioning hole grooves 221 and the steel plate 54 is identical, a kind of the 3rd latch 7 is by being plugged in through hole 541 and the positioning hole groove 221 and steel plate 54 is positioned on the fixed mount 22 the movable plug of this 3rd latch.

It is same as the prior art that the utility model is not stated part.

Claims

1, the back-rest means for chair of fitness equipment, include backrest (1) and support (2), it is characterized in that, also include swing span (3) and fixture block (4), backrest (1) and support (2) are hinged and have a hinged center of A, have a plurality of on the swing span (3) along a kind of camber line draw-in groove spaced apart (31), the center of circle of this camber line is the hinged center of A, swing span (3) is fixedlyed connected with backrest (1), its fixed connection point and A have distance between the hinged center, fixture block (4) flexibly connects with support (2), simultaneously an end and draw-in groove (31) clamping of fixture block (4).

2, the back-rest means for chair of fitness equipment according to claim 1, it is characterized in that, swing span (3) is a kind of rotating disk that is the fan annular, and fixture block (4) is a kind of latch, has a positioning through hole on support this moment (2), the central lines of the draw-in groove (31) on the center line of this positioning through hole and the swing span (3), latch were interted this positioning through hole, and with the draw-in groove clamping of swing span (3).

3, the back-rest means for chair of fitness equipment according to claim 1, it is characterized in that, swing span (3) can be fan-shaped rotating disk for a kind of, and fixture block (4) is a kind of latch, have a locating slot on the support (2), latch can be connected in the draw-in groove (31) and the locating slot on the support (2) of rotating disk simultaneously.

4, the back-rest means for chair of fitness equipment according to claim 1 is characterized in that, swing span (3) can be a kind of ratchet, the teeth groove that distributes on it is draw-in groove (31), and fixture block (4) is a kind of ratchet, and ratchet one end and support are hinged, the teeth groove clamping of the other end and ratchet.

5, the back-rest means for chair of fitness equipment according to claim 1 is characterized in that, support (2) can be the trunk support body of fitness equipment.

6, the back-rest means for chair of fitness equipment according to claim 1, it is characterized in that, support (2) comprises pole (21) and fixed mount (22), pole (21) and backrest (1) are hinged and have a hinged center of A, pole (21) is connected with fixed mount (22), and fixture block (4) flexibly connects with pole (21).

7, the back-rest means for chair of fitness equipment according to claim 6 is characterized in that, pole (21) can be to fixedly connected with fixed mount (22), also can be to flexibly connect.

8, the back-rest means for chair of fitness equipment according to claim 6, it is characterized in that, pole (21) flexibly connects by a sleeve pipe (5) and fixed mount (22), sleeve pipe (5) comprises latch (51), inner sleeve (52) and outer tube (53), outer tube (53) is connected with fixed mount (22), inner sleeve (52) cover is inserted in the inner chamber of outer tube (53), and have outside the protruding sleeve pipe that exposes outside of an end (53), pole (21) is fixed on the outer end of the protruding sleeve pipe that exposes outside of inner sleeve (52) (53), be intervally distributed with a plurality of hole slots (521) on the inner sleeve (52), outer tube (53) then has a locating hole (531), simultaneously the center line of locating hole (531) can with the centerline of any one hole slot (521) on same straight line, latch (51) one ends and locating hole (531) flexibly connect, and the other end then is plugged in the hole slot (521) of inner sleeve (52).

9, the back-rest means for chair of fitness equipment according to claim 8 is characterized in that, outer tube (53) can be fixedlyed connected with fixed mount (22), can also removably connect.