CN201370314Y

CN201370314Y - Adjuster for chair back variation angle

Info

Publication number: CN201370314Y
Application number: CN200920095417U
Authority: CN
Inventors: 陈永华
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-01-22
Filing date: 2009-01-22
Publication date: 2009-12-30
Anticipated expiration: 2019-01-22

Abstract

An adjuster for chair back variation angles comprises a rotating sleeve, an L-shaped connector, a large spring, a displacement rod piece and a plunger-latch device, wherein the front end of the rotating sleeve is opened to form a containing chamber; the L-shaped horizontal edge of the L-shaped connector is provided with a screw rod screwed with a screw hole of the rotating sleeve; the tail end of the large spring is sheathed into the containing chamber of the rotating sleeve; the front end of the displacement rod piece is provided with a second pin-jointed end with a pin-jointed hole, the inner side of the second pin-jointed end is adjoined with a first rod body with smaller external diameter, and the inner side of the first rod body is adjoined with a second rod body with smaller diameter and capable of penetrating through an axle hole of the screw rod; the plunger-latch device is correspondingly arranged at a longitudinal punching hole of the connector, a latch at front end thereof extends into the longitudinal punching hole, protrudes into a preset pin hole on the second rod body and locks the displacement rod piece to lead the displacement rod piece not to generate displacement; and when the plunger-latch device draw the latch out of the pin hole in virtue of a toggling element, the displacement rod piece is in an unlocking state and can displace axially. The adjuster of chair back variation angles adjusts the deflected tightness thereof according to the requirements of users, thus achieving most comfortable degree of elasticity, convenient operation and long service life.

Description

The adjuster of chair back angle changing

Technical field

The utility model relates to a kind of office chair, relates in particular to a kind of adjuster of chair back angle changing.

Background technology

The design of office chair meets ergonomics except need, makes outside people's ride comfort, if it can be adjusted chair back angle then be better; Shown in Figure 1 is existing a kind of office chair 10, and it includes a seat cushion 11 substantially, and these seat cushion 11 belows are supported with a supporting seat 12, then are provided with a chair back 13 behind, can lean against on the chair back and have a rest with above the waist to layback when the user is tired; Between this chair back 13 and the seat cushion 11 is to be connected with a L shaped bar 14, so the position of the chair back 13 is changeless, so can't obtain comfortable angle of inclination when the user swings back.

Fig. 2 is existing another kind of office chair 20, its except shape with Fig. 1 is different, all the other structures are roughly the same, as for the office chair 30 shown in Fig. 3 A, Fig. 3 B, be a kind of office chair of adjustable angle, it is to be provided with a bearing 34 between seat cushion 31 and supporting seat 32, and promptly these bearing 34 bottoms are the upper ends 323 that are articulated in supporting seat 32 with articulated part 321, and be provided with a spring 322 forwardly, so that the back stretch when making bearing 34 and receding to be provided.Though this kind structure can make the chair back 33 have sweptback function, this chair back 33 is to be the whole of L type with seat cushion 31 to retreat, and this is for only thinking the back to layback and for the user that seat portion does not kick up, and inapplicable; And this bearing 34 must be born the gravity when pivoting on the whole seat cushion, so that can become heavy on the structure, loses the flexibility of office chair, moreover the design that all retreats together with seat cushion 31, easily lose center of gravity, the security of use more notes, otherwise the overturning backward of whole seat.

Fig. 4 is U.S patent 6,149, the office chair 40 that is disclosed for No. 236, it is at the chair back 42 (rear support, 41) and between the seat portion (seat support), be provided with a vapour-pressure type recliner 43 (inclination-adjustment pneumatic spring), use as the elastic buffer of the chair back 41.And the adjustment of vapour-pressure type structure, as be vertical as the lift in height adjustment of seat portion 42 at axial region 44, can be rated as practicality.But be used in the chair back 41, then its DE and then not desirable to the greatest extent with the flexibility ratio of human body swing improves the space so still have.

The utility model content

Technical problem underlying to be solved in the utility model is, overcome the above-mentioned defective that prior art exists, and provide a kind of adjuster of chair back angle changing, it has pinning (LOCK) and two kinds of functions of release (UNLOCK) in one, when adjuster pins, the chair back can be positioned at predetermined angle of inclination on demand, and when adjuster is release, the chair back is formed the resiliency supported state, and can adjust the elasticity of its beat according to user's demand, to reach the DE of the most comfortable, and this adjuster is a frame for movement, do not use air pressure or other electronic components, thus easy to operate, and long service life.

The technical scheme that its technical problem that solves the utility model adopts is:

A kind of adjuster of chair back angle changing especially refers to a kind of skewed adjuster that is installed in chair back bottom and seat portion rear side lower that is; It is characterized in that, comprising: a rotation set, its front end is opening and forms an accommodation chamber, and this accommodation chamber bottom surface central authorities to tail end is axially arranged with a screw; The connector of one L type, the horizontal edge of its L type is provided with the screw rod that can be screwed with the screw of this rotation set, and this connector is provided with the axis hole that runs through in screw axial, the longitudinal edge of this L type is provided with first pivot end of a tool pivoted hole again, and the junction of this longitudinal edge and this screw rod is provided with one and vertically bores a hole to this axis hole; One big spring, its tail end is inserted in the accommodation chamber of this rotation set; One displacement rod member, its front end is provided with second pivot end of a tool pivoted hole, and abut against this second pivot end inboard is the first less body of rod of an external diameter, abut against this first body of rod inboard again and be second body of rod of the axis hole of less and this screw rod that can stretch through of a diameter, this first body of rod and this second body of rod adjoiner form the restriction portion of an external diameter greater than this axis hole, and this displacement rod member is stretched through by tail end behind this big spring and this axis hole, utilize the keeper of its tail end that this displacement rod member is positioned in this connector, but be the axial displacement form, and this big spring is limited between this second pivot end and this accommodation chamber, moreover, this second body of rod is provided with the pin-and-hole of several arrangements with respect to vertical perforation place of this connector; One locking device is that correspondence is installed in vertical perforation of this connector, and the latch of its front end stretches into this vertical perforation, and protrudes out in the predetermined pin-and-hole on this second body of rod, this displacement rod member is pinned (LOCK) and not movable; When this locking device is stirred element and when extracting this latch out this pin-and-hole by one, this displacement rod member is release (UNLOCK) but state and axial displacement, and utilize and rotate the front and back displacement of this rotation set on this screw rod, adjusted the compressive state of this big spring, and then controlled the flexible elasticity of this displacement rod member.

The adjuster of aforesaid chair back angle changing wherein is provided with one first pad between the accommodation chamber bottom surface of big spring and this rotation set, and and be provided with one second pad between this displacement rod member and this second pivot end inboard.

The adjuster of aforesaid chair back angle changing, wherein the keeper of displacement rod member tail end comprises with a C type and buckleing, and is clamped on the default groove of this displacement rod member tail end.

The adjuster of aforesaid chair back angle changing, wherein locking device comprises: a housing, be to be hollow form and the end is provided with a combined hole, extend two spacers about its bottom, and this spacer laterally is provided with through hole, this housing is with respect to this vertical perforation, is nested with on this connector with spacer, and passes this through hole with screw and be fixed on the screw of this connector; One medi-spring is arranged in this housing; One flexible latch fitting comprises the latch of bottom being connected the hollow cock body on this latch that one is located at the spigot in this hollow cock body, and one is nested with the little spring in this spigot, and two fasteners that little spring are positioned at this hollow cock body; One connecting piece, be to be locked on the combined hole of this housing, connect a cable on it, but the dragline that has pull in this cable, and stretch through this housing and be connected and fixed of this dragline front end with this spigot, the dragline free end then is connected with an element of stirring that is located on the seat, and controlled by it and can spur this flexible latch fitting axial displacement.

The beneficial effects of the utility model are, it has pinning (LOCK) and two kinds of functions of release (UNLOCK) in one, and when adjuster pinned, the chair back can be positioned at predetermined angle of inclination on demand, and when adjuster is release, the chair back is formed the resiliency supported state, and can adjust the elasticity of its beat according to user's demand, to reach the DE of the most comfortable, and this adjuster is a frame for movement, do not use air pressure or other electronic components, thus easy to operate, and long service life.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the schematic perspective view of existing a kind of office chair.

Fig. 2 is the schematic perspective view of existing another kind of office chair.

Fig. 3 A is the office chair side view of existing a kind of angle adjustable.

Fig. 3 B is the schematic perspective view of partial component shown in Fig. 3 A.

Fig. 4 is the schematic diagram of the 6th, 149, No. 236 patents of the U.S..

Fig. 5 is an exploded perspective schematic diagram of the present utility model.

Fig. 6 is a combination schematic perspective view of the present utility model.

Fig. 7 is a cutaway view of the present utility model, and it shows the LOCK state.

Fig. 8 is the amplification view of part-structure shown in Figure 7.

Fig. 9 is a cutaway view of the present utility model, and it shows the UNLOCK state, and big spring has the collapsing length of longer L1.

Figure 10 is a cutaway view of the present utility model, and it shows the UNLOCK state, and big spring has the collapsing length of shorter L2.

Figure 11 is a user mode reference diagram of the present utility model.

The number in the figure explanation:

50 rotation sets, 64 pivoted holes

51 accommodation chambers 65 are vertically bored a hole

52 screws, 66 screws

60 connectors, 67 screws

61 screw rods, the 70 displacement bodies of rod

611 outer faces, 71 second pivot ends

62 axis holes, 711 pivoted holes

63 first pivot ends, 72 first bodies of rod

721 restriction portions, 200 chair back

300 portions of 73 second bodies of rod

74 grooves, 75 keepers

76 pin-and-holes, 80 big springs

81 first pads, 82 second pads

90 locking devices, 91 housings

911 combined holes, 92 spacers

93 through holes, 94 medi-springs

95 flexible latch fitting 951 latches

952 hollow cock bodies, 953 spigots

954 little springs, 955 fasteners

96 connecting pieces, 97 cables

971 draglines 98 are stirred element

100 adjusters

The specific embodiment

See also Fig. 5 to shown in Figure 8, the utility model preferred embodiment comprises:

One rotation set 50, its front end is opening-like and form an accommodation chamber 51, and these accommodation chamber 51 bottom surface central authorities to tail ends are axially arranged with a screw 52;

The connector 60 of one L type, the horizontal edge of its L type is provided with the screw rod 61 that can be screwed with the screw 52 of this rotation set 50, and this connector 60 is axially arranged with the axis hole 62 that runs through in screw rod 61, the longitudinal edge of this L type is provided with first pivot end 63 of a tool pivoted hole 64 again, and the junction of this longitudinal edge and this screw rod 61 is provided with one and vertically bores a hole 65 to this axis hole 62;

One big spring 80, its tail end are inserted in the accommodation chamber 51 of this rotation set 50;

One displacement rod member 70, its front end is provided with second pivot end 71 of a tool pivoted hole 711, and abut against these second pivot end, 71 inboards is the first less body of rod 72 of an external diameter, abut against these first body of rod, 72 inboards and be second body of rod 73 of the axis hole 62 of less and this screw rod 61 that can stretch through of a diameter, this first body of rod 72 forms the restriction portion 721 of an external diameter greater than this axis hole with these second body of rod, 73 adjoiners, and this displacement rod member 70 is stretched through by tail end behind this big spring 80 and this axis hole 62, utilize the keeper 75 of its tail end that this displacement rod member 70 is positioned in this connector 60, but be the axial displacement form, and this big spring 80 is limited between this second pivot end 71 and this accommodation chamber 51, moreover, this second body of rod 73 is provided with the pin-and-hole 76 of several arrangements with respect to vertical perforation 65 places of this connector 60;

One locking device 90, be that correspondence is installed in vertical perforation 65 of this connector 60, the latch 951 of its front end can stretch into this vertically perforation 65, and protrudes out in the predetermined pin-and-hole 76 on this second body of rod 73, this displacement rod member 70 is pinned (LOCK) and not movable.

When this locking device 90 is stirred element 98 and when extracting this latch 951 out these pin-and-holes 76 by one, this displacement rod member 70 is release (UNLOCK) but state and axial displacement, and utilize and rotate the front and back displacement of this rotation set 50 on this screw rod 61, adjusted the compressive state of this big spring 80, and then controlled the elasticity that this displacement rod member 70 stretches.

Again, be provided with one first pad 81 between accommodation chamber 51 bottom surfaces of this big spring 80 and this rotation set 50, and and be provided with one second pad 82 between this displacement rod member 70 and this second pivot end, 71 inboards.

Moreover the keeper 75 of these displacement rod member 70 tail ends is to be held on the default groove 74 of these displacement rod member 70 tail ends with a C type clip in the present embodiment.

Further, these locking device 90 1 possible embodiments comprise:

One housing 91, be to be hollow form and the end is provided with a combined hole 911, extend two spacers 92 about its bottom, and this spacer 2 laterally is provided with through hole 93, this housing 91 is with respect to this vertically perforation 65, be nested with on this connector 60 with spacer 92, and pass this through hole 93 with screw 67 and be fixed on the screw 66 of this connector 60;

One medi-spring 94 is arranged in this housing 91;

One flexible latch fitting 95, the latch 951 that comprises the bottom is connected hollow cock body 952, on this latch and is located at spigot 953 in this hollow cock body 952, one is nested with the little spring 954 in this spigot 953, and two fasteners 955 that little spring are positioned at this hollow cock body 952;

One links sheet 96, be to be locked on the combined hole 911 of this housing 91, connect a cable 97 on it, but the dragline 971 that has pull in this cable, and these dragline 971 front ends are this housings 91 and be connected and fixed with this spigot 953 of stretching through, dragline 971 free ends then are connected with an element 98 of stirring that is located on the seat, and controlled by it and can spur this flexible latch fitting 95 axial displacements.

By above-mentioned technological means, operation of the present utility model and effect thereof are as back:

One, as shown in Figure 7, it is to show that adjuster 100 of the present utility model is pinning (LOCK) state, that is latch 951 vertical this displacement rod member 70 pin-and-holes 76 wherein that insert of this locking device 90, make that second pivot end 71 of displacement rod member and first pivot end 63 of connector 60 are to be regular length, can consider in light of actual conditions this moment shown in Figure 11, when first and

second pivot end

63,71 articulates present portion 300 and the chair back 200 bottoms respectively, make the chair back 200 be the inclination of predetermined angular.

Two, please consult shown in Figure 9 again, it is to show that adjuster 100 of the present utility model is release (UNLOCK) state, that is this locking device 90 spurs dragline 971 by the operation of stirring element 98 and then pulling should move on the flexible latch fitting 95, make its mortise lock 951 break away from this pin-and-hole 76, make between first pivot end 63 of second pivot end 71 of displacement rod member 70 and connector 60 and present on-fixed length state, can consult this moment shown in Figure 11, when being hubbed on these 300 rear sides, first pivot end 63 make it can not displacement, but this displacement rod member 70 can axial displacement in the axis hole 62 of connector 60, make that being the chair back 200 that articulates shape with second pivot end 71 can adjust angle at any time along with the human body swing, and has an elastic buffer power, and the size of this elastic buffer power, can utilize this rotation set 50 to adjust, rotation set 50 shown in Figure 9 is positioned at the leftmost side of screw rod 61, this moment, this big spring 80 had a collapsing length L1 the longest, this moment, the displacement rod member 70 presented the elastic force of pine, was applicable to that body weight uses than the lighter.Movable distance as for this displacement rod member 70 is meant the system portion 721 of first body of rod 72 and the distance D between this screw rod 61 outer faces 611, and this spacing angle of inclination of the chair back of avoiding is excessive.

Three, then, see also shown in Figure 7, when user's body weight is heavier, then rotation set 50 can be rotated, make it to screw rod 61 outside displacements, and then compression big spring 80, make it have short collapsing length L2, displacement this moment rod member 70 presents tighter elastic force, so be applicable to the heavier person of body weight.Generally speaking, the user can adjust the elastic force of the chair back 200 according to the demand of oneself, to reach the state of the most comfortable.

From the above, the utility model is the location can not be adjusted and adjustable two kinds of structures combine together, and uses and go up conveniently, is the adjuster of a practicality.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

In sum, the utility model is on structural design, use practicality and cost benefit, it is required to meet industry development fully, and the structure that is disclosed also is to have unprecedented innovation structure, have novelty, creativeness, practicality, the regulation that meets relevant novel patent requirement is so mention application in accordance with the law.

Claims

1, a kind of adjuster of chair back angle changing especially refers to a kind of skewed adjuster that is installed in chair back bottom and seat portion rear side lower that is; It is characterized in that, comprising:

One rotation set, its front end is opening and forms an accommodation chamber, and this accommodation chamber bottom surface central authorities to tail end is axially arranged with a screw;

The connector of one L type, the horizontal edge of its L type is provided with the screw rod that can be screwed with the screw of this rotation set, and this connector is provided with the axis hole that runs through in screw axial, the longitudinal edge of this L type is provided with first pivot end of a tool pivoted hole again, and the junction of this longitudinal edge and this screw rod is provided with one and vertically bores a hole to this axis hole;

One big spring, its tail end is inserted in the accommodation chamber of this rotation set;

One displacement rod member, its front end is provided with second pivot end of a tool pivoted hole, and abut against this second pivot end inboard is the first less body of rod of an external diameter, abut against this first body of rod inboard again and be second body of rod of the axis hole of less and this screw rod that can stretch through of a diameter, this first body of rod and this second body of rod adjoiner form the restriction portion of an external diameter greater than this axis hole, and this displacement rod member is stretched through by tail end behind this big spring and this axis hole, utilize the keeper of its tail end that this displacement rod member is positioned in this connector, but be the axial displacement form, and this big spring is limited between this second pivot end and this accommodation chamber, moreover, this second body of rod is provided with the pin-and-hole of several arrangements with respect to vertical perforation place of this connector;

One locking device is that correspondence is installed in vertical perforation of this connector, and the latch of its front end stretches into this vertical perforation, and protrudes out in the predetermined pin-and-hole on this second body of rod, this displacement rod member is pinned (LOCK) and not movable;

When this locking device is stirred element and when extracting this latch out this pin-and-hole by one, this displacement rod member is release (UNLOCK) but state and axial displacement, and utilize and rotate the front and back displacement of this rotation set on this screw rod, adjusted the compressive state of this big spring, and then controlled the flexible elasticity of this displacement rod member.

2, the adjuster of chair back angle changing according to claim 1 is characterized in that: be provided with one first pad between the accommodation chamber bottom surface of described big spring and this rotation set, and and be provided with one second pad between this displacement rod member and this second pivot end inboard.

3, the adjuster of chair back angle changing according to claim 1 is characterized in that: the keeper of described displacement rod member tail end comprises with a C type to be buckled, and is clamped on the default groove of this displacement rod member tail end.

4, the adjuster of chair back angle changing according to claim 1 is characterized in that: described locking device comprises:

One housing is to be hollow form and the end is provided with a combined hole, extends two spacers about its bottom, and this spacer laterally is provided with through hole, this housing is with respect to this vertical perforation, is nested with on this connector with spacer, and passes this through hole with screw and be fixed on the screw of this connector;

One medi-spring is arranged in this housing;

One flexible latch fitting comprises the latch of bottom being connected the hollow cock body on this latch that one is located at the spigot in this hollow cock body, and one is nested with the little spring in this spigot, and two fasteners that little spring are positioned at this hollow cock body;

One connecting piece, be to be locked on the combined hole of this housing, connect a cable on it, but the dragline that has pull in this cable, and stretch through this housing and be connected and fixed of this dragline front end with this spigot, the dragline free end then is connected with an element of stirring that is located on the seat, and controlled by it and can spur this flexible latch fitting axial displacement.