CN1823657A - Chair and support mechanism unit thereof - Google Patents
Chair and support mechanism unit thereof Download PDFInfo
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- CN1823657A CN1823657A CN 200610006707 CN200610006707A CN1823657A CN 1823657 A CN1823657 A CN 1823657A CN 200610006707 CN200610006707 CN 200610006707 CN 200610006707 A CN200610006707 A CN 200610006707A CN 1823657 A CN1823657 A CN 1823657A
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Abstract
A chair is provided with a base 6 fixed at an upper end of a leg pillar 5 , a back support unit 13 attached to the base 6 so as to tilt backward, a backrest 3 attached to the back support unit 13 , and a spring unit 14 supporting the backward tilt of the back support unit 13 . The spring unit 14 is to expand and contract in a back and forth direction when viewed from above and arranged further behind than a tilt supporting point 16 a of the back support unit 13 . The back support unit 13 , the spring unit 14 , and the base 6 constitute a kind of link mechanism and the spring unit 14 will expand and contract mainly at the front end, while tilting backward.
Description
Technical field
The present invention relates to possess can after the fascinate seat (rocking chair) and the wherein employed supporting mechanism of backrest.
Background technology
Backrest can after in the rocking chair that fascinates, utilize spring mechanism support backrest after fascinate.As spring mechanism, though can use compression helical spring or leaf spring, moment of torsion rod, rubber, pneumatic cylinder (or gas spring) etc., but general majority is to use compression helical spring, and most cases is that this compression helical spring is configured in the opening case shape pedestal up, and is configured to be the posture of extending to fore-and-aft direction roughly overlooking.
In addition, spring is supported by the front and back spring base, comes the initial elastic force (hardness) of adjustable screw spring by the interval of spring base before and after regulating.The governor motion of helical spring initial elastic force, be as a rule by utilize wedge-shaped member change before and after the position of any one spring base carry out the adjusting of initial elastic force, and most cases is that the action bars (also can call handle or handle) that is used to operate wedge-shaped member is configured in position below the pedestal.
And, as a rule, be after fascinate to be arranged on freely on the back rest supports unit on the pedestal backrest be installed, generally make compression helical spring compression by fascinating behind the back rest supports unit.
As the wabbler mechanism that has used such compression helical spring, following structure is disclosed in public clear 48-37430 communique of spy and real public clear 48-40818 communique, that is: on pedestal, be provided with to the outstanding protuberance in the rear of seat support, utilize pin to be installed in freely on this protuberance fascinating behind the back rest supports unit, and, on pedestal, slightly be the fixing aft-opening tube of the posture that roughly leans forward with side-looking, embed compression helical spring and the adjusting parts of pushing this compression helical spring in this inside, make the load that is produced by fascinating behind the back rest supports unit act on compression helical spring from the rear by regulating parts.
But, in above-mentioned two communiques in the seat of disclosed seat and other most cases, since be than the fulcrum that fascinates (rotating fulcrum) of back rest supports unit near the part of front side to compression helical spring effect pressing force, so, because the effect of lever makes compression helical spring is produced bigger load, and on the other hand, because the inside of pedestal is subjected to the restriction in space, so the length of compression helical spring also is restricted.Therefore, in order under the short condition of length, to guarantee necessary bounce (elastic recovering force), typically used the compression helical spring of heavy wire in the past.
On the other hand, well-known, lean against under the situation of the posture that is layback on the backrest the people who is sitting on the seat, if backrest is hypsokinesis rapidly, then because impact can make the user feel under the weather, and if backrest slowly hypsokinesis in the limit range of hypsokinesis does not then have uncomfortable feeling.In addition, when the layback state is sat up, wish that also backrest erects lentamente.
But, if the posture that makes spring as above-mentioned two communiques is for certain, in the time of people on being sitting in seat then can occurring and lean against on the backrest, the phenomenon of backrest hypsokinesis suddenly in the extremely short time, with in hypsokinesis a little a bit after, the bounce of spring sharply increases, and can not continue the phenomenon of hypsokinesis, thereby can not realize comfortable swinging condition.
To this, though think as long as increase the initial elastic force of compression helical spring, if increase the initial elastic force of compression helical spring, then can make the hypsokinesis action become difficult thus, therefore, even increase the initial elastic force of compression helical spring, can not improve its comfortableness.
In addition, though if can increase the maximum hypsokinesis angle of backrest, then can realize comfortable swinging condition, the limited length of spring in the past, the hypsokinesis angle of backrest also is restricted naturally, so exists the problem of the hypsokinesis angle that is difficult to enlarge backrest.In addition, if as in the past the adjusting rod of the initial elastic force of regulating spring be configured in pedestal below, therefore then, exist the problem of regulating the operation effort because the people must carry out the operation of adjusting rod with the posture that stoops body.
On the other hand, though the backrest of seat can adopt various structures, but under by the situation of the turning chair that generally is used to handle official business (a kind of pin pillar that utilizes horizontally rotates the chair that supports seat support freely), the backrest most cases is to constitute 3 layers of structure, that is: has a resin system shell as the function of intensity component part, have the resin system inner casing of body-support function and paste the cushion of paying on the inner casing front, and most cases is to utilize screw that shell is fixed on the back rest supports unit.
The backrest of this three-decker in the past, though have the advantage of the good grade of resiliency, but a problem that exists is, the bad situation of operability is arranged when carrying out the assembling of seat, promptly, adopted the seat of three-decker backrest in the past, normally in advance cushion pad is installed on the inner casing, after shell being fixed on the back rest supports unit, inner casing is installed on the shell, but, owing to must carry out shell is installed on the back rest supports unit and inner casing is installed in operation on the shell, so assembly operation is wasted time and energy.
If make the parts of several blocking in advance, adopt erection method to assemble, then in this case, consider from operating efficiency and quality of stability aspect, wish that assembling procedure is few as far as possible, for this reason, though require element number few more good more, backrest structure in the past is difficult to satisfy this requirement.
In addition, the backrest of three-decker in the past also exists following problem,, owing to only rely on shell then can not bring into play function as backrest, must have the inner casing of band cushion pad, so be difficult to simplified structure that is.That is, shell in the past so the people can not lean against on the shell, therefore, can not be simplified the structure of backrest owing in order to keep intensity, generally be to form a plurality of ribs in front.
Summary of the invention
Therefore, the present invention is exactly to be the invention that purpose is done to improve above-mentioned present situation.
Seat of the present invention, as basic structure, have, from the pedestal of the described seat support of supported underneath, by the back rest supports unit can after be installed in with fascinating backrest on the described pedestal and resiliency supported described back rest supports unit and backrest after the spring members that fascinates.
And, described spring mechanism, be the flexible state of direction forwards, backwards on the face overlooking, spring mechanism is supported from the place ahead by pedestal, and the load that is produced by fascinating behind the backrest acts on spring mechanism from rear roughly, and, the rearward end of described spring mechanism, be positioned at the position of more leaning on the rear than the fulcrum that fascinates of back rest supports unit, and the leading section of spring mechanism is positioned at the position of more leaning on the below than the fulcrum that fascinates of back rest supports unit, and, allowing described spring mechanism is the center with the support portion of described relatively pedestal, fascinates with backrest and back rest supports unit.
In the present invention, owing to utilize spring mechanism to support the position of more leaning on the rear than the fulcrum that fascinates of back rest supports unit, so can make for the load application point of spring mechanism the fulcrum that fascinates away from the back rest supports unit, therefore, the leverage of comparing in the past that utilizes makes the spring mechanism deformed configurations, can reduce the load to spring mechanism.
In addition, because spring mechanism is configured to the state that extends to the rear of pedestal, thus spring mechanism the restriction that the space can not be subjected to pedestal is set, can the extend length of spring mechanism of its result, therefore, can increase the stroke that fascinates along with backrest of spring mechanism.
Like this, owing to can reduce load to spring mechanism, and can increase the stroke of spring mechanism, this acting in conjunction of 2, continue reliably in the gamut that can behind backrest, fascinate to support backrest (promptly, can prevent the hypsokinesis rapidly of backrest or stop at phenomenon in the hypsokinesis way), thus, can realize comfortable swinging condition.
In addition, owing to can increase the stroke of spring mechanism, thus also can be more in the past than the hypsokinesis angle that increased backrest, this point also can further improve the comfortableness of swinging condition.
In most preferred embodiment of the present invention, described back rest supports unit and backrest, be manufactured into separate parts, rear portion in described back rest supports unit, the column sections of extending above roughly with many of the state configuration of the appropriate intervals of about being on the main-vision surface, being separated by, on the other hand, be formed with installation portion on described backrest, this installation portion has the installing hole towards lower opening that is nested in from the top on the described column sections.According to such structure, can backrest be installed on the back rest supports unit by disposable pressing operation, can improve the efficient of the assembling operation of seat thus.
In addition, in most preferred embodiment of the present invention, backrest has plastic master unit, part and the part that is used to be installed on the back rest supports unit that this master unit is used for support is sitting in the health of the people on the seat link into an integrated entity, and, master unit extends to the below that is lower than seat surface, on described master unit, is formed with the installation portion that is embedded in from the top on the column sections of described back rest supports unit.According to such structure, can simplify the structure of backrest.In this case, by the front of master unit being formed slick and sly outline line, the user can directly be leaned against on the master unit, thereby further simplified structure (can certainly be puted up cushion pad on the front of master unit.
In addition, in most preferred embodiment of the present invention, described back rest supports unit has: leading section be installed on the pedestal and forwards, backwards direction extend the 1st framework and both sides metal bar system of stretching out or the 2nd framework of metal pipe material system to the left and right at the rear of the 1st framework, about the 2nd framework, have be to the left and right the rake of toppling in the outside on the main-vision surface and be arranged on the rake front end towards above column sections, on described column sections, installation portion from the nested described backrest in top, on the other hand, be formed with groove on the master unit on the described backrest, this groove is embedded in from the top on the rake of the 2nd framework of described back rest supports unit.Adopt such structure, because the 2nd framework of back rest supports unit all is entrenched in rake and column sections on the backrest, so can improve the support strength of backrest.
Have at backrest under the situation of plastic master unit, the plastic pin shape buffer body that extends upward from the upper end of this column sections preferably is installed on the column sections of back rest supports unit in advance, and described pin shape buffer body is embedded in the installing hole of the master unit on the backrest.Like this, can prevent the concentrated phenomenon of privileged site upper stress, thereby can improve durability at the installation portion of master unit.In addition, buffer body also can constitute column sections.
In addition,, on the master unit of described backrest, be formed with claw portion as most preferred embodiment of the present invention, this claw portion from the top or from the rear by on the root of forcing chimeric the 2nd framework that is entrenched in described back rest supports unit.Because the existence of this claw portion can prevent the phenomenon that master unit breaks away from from above, therefore, can guarantee effectively by disposable push backrest is installed in reliability on the back rest supports parts.
In most preferred embodiment of the present invention, use compression helical spring as spring mechanism, this compression helical spring is assembled in the spring unit.And spring unit has: be configured in the front and back of compression helical spring spring base, be used to regulate before and after the screw-type adjusting rod at interval of spring base and the operating grip of rotary manipulation adjusting rod, operating grip is configured in the rear end of spring unit.The configuration of such operating grip owing to can make the user not need to stoop again and again the rotary manipulation that body carries out operating grip with the posture of nature, therefore can be carried out the adjusting of the initial elastic force of compression helical spring like a cork.
In addition, in most preferred embodiment of the present invention, on the master unit of backrest, be formed with and allow described operating grip is combined on the adjusting rod or from hole that adjusting rod unloads.According to such structure, owing to can make the function of adjusting rod or operating grip performance as the limiting component that moves upward that stops backrest, so such seat, only need be embedded in backrest on the back rest supports unit and just can finish installation, its assembling operation is simple, and, even the chimeric unexpected state of affairs that is disengaged of the master unit and the back rest supports unit of backrest has taken place, can prevent that also backrest breaks away from (that is, also can guarantee security performance in the easiness that guarantees assembling operation) from the back rest supports unit.
As most preferred embodiment of the present invention, operating grip has: can not be entrenched in the convex portion on the described adjusting rod with the relative rotation and be arranged on the avette handle portion of the rear end of this convex portion integratedly.Form avette handle portion in this wise, the people can be rotated operation like a cork.
The present invention also comprises a kind of support mechanism unit of seat.That is, this support mechanism unit has as basic constituent element: from the pedestal of supported underneath seat support, for backrest is installed can after be installed in with fascinating back rest supports unit on the described pedestal and the described back rest supports of resiliency supported unit after the spring unit that fascinates.
And, described spring unit has: overlook be upwardly extending posture on the face in front and back and on side-looking face, be the compression helical spring of hypsokinesis posture configuration, support the front springs seat of described compression helical spring from the place ahead, support the Rear springs seat of described compression helical spring from the rear and be used to regulate before and after the adjusting rod of screw-type at interval of spring base, described adjusting rod, with the concentric direction in the axle center of compression helical spring on extend, and, the rear end of described adjusting rod is exposed at the rear of Rear springs seat and fitting operation handle on this exposed division.
And, the rotating fulcrum of described back rest supports unit, the front end that is positioned at than spring unit more leans on top and position nearby, rear portion in the back rest supports unit, be formed with the support portion of Rear springs seat, the leading section of spring unit, support in revocable mode by pedestal, to allow spring unit and back rest supports unit together to fascinate, and, on described pedestal, be fixed with the upwards limiting component of turned position of restriction back rest supports unit, the back rest supports unit is remained at limited parts under the state that can not upwards rotate, described compression helical spring is applied initial elastic force.
Support mechanism unit of the present invention, because pedestal, back rest supports unit and spring unit formation is integrated, so, the high advantage of assembling operation efficient when the assembling of seat had.Particularly for the seat by assembling in the disposable mode of pushing, this advantage can be fully played.
In addition, in the present invention, in order to specify component parts, used the statement of " front and back ", said here front and back are the front and back that also can lean against the artificial benchmark on the backrest on the seat to be sitting in.
Description of drawings
Fig. 1 is the front view of the seat of the 1st embodiment of the present invention.
Fig. 2 A is the vertical view of seat; Fig. 2 B is the left view of seat.
Fig. 3 is the stereogram that constitutes the master unit of backrest.
Fig. 4 is the exploded perspective view of parts.
Fig. 5 is the vertical view that has omitted the seat of seat support state.
Fig. 6 is the vertical section side view of support mechanism unit.
Fig. 7 is the decomposition front view of back rest supports unit and backrest.
Fig. 8 is the front view of the partly cut-away under the state that backrest is installed on the back rest supports unit, and is the VIII-VIII view of Figure 10.
Fig. 9 is the upward view of backrest.
Figure 10 A is the XA-XA cutaway view of Fig. 8; Figure 10 B is the B-B cutaway view of Figure 10 A.
Figure 11 A is the cutaway view from the backrest installation process of the state of the XIA-XIA view observation of Fig. 7; Figure 11 B is the XIB-XIB cutaway view of Fig. 8 that the state of backrest has been installed; Figure 11 C is the XIC-XIC cutaway view of Fig. 8 that the state of backrest has been installed; Figure 11 D is the rearview of back rest supports unit.
Figure 12 is the stereogram of expression the 2nd embodiment.
Figure 13 is the XIII-XIII cutaway view of Figure 12.
The specific embodiment
Below, in conjunction with the accompanying drawings, embodiments of the invention are described.The seat of present embodiment is applicable to the turning chair that is generally used for handling official business.Fig. 1～Figure 11 represents the 1st embodiment, and Figure 12 and Figure 13 represent the 2nd embodiment.
The summary of (1) the 1st embodiment
At first, in conjunction with Fig. 1～Fig. 5, the summary of the 1st embodiment is described.Seat has pin 1, seat support 2, backrest 3 and armrest system 4, and (armrest system 4 has pair of right and left, but has only represented one among the figure.)。Pin 1 has pin pillar 5 that is made of pneumatic cylinder and a plurality of (5) the supporting leg 1a that is radial extension, and the front end of each supporting leg 1a is provided with roller 1b.
Backrest 3 has plastic master unit (also can be called shell) 10.Master unit 10 has constituted the major part of backrest 3, and the profile of master unit 10 is the profile of backrest 3, and its front-back all forms even surface.And, master unit 10 formed support is sitting in the state that back of the body support portion 10a and the lumbal branch support part 10b that supports the waist be sitting in the people on the seat at the back of the people on the seat are connected up and down, and, master unit 10 has the bottom 10c that extends from seat support 1 downwards, and this bottom 10c possesses the function of installation.Outstanding downwards slightly circular chevron when as shown in Figure 3, the bottom 10c of master unit 10 is formed from top view.On back of the body support portion 10a, top cushion pad 11 is installed, bottom cushion pad 12 is installed in the front of lumbal branch support part 10b.
For example, as shown in Figure 3, the back of the body support portion 10a of backrest 3 is formed top and is the narrow more shape of roughly falling from power of the wideest its width more downwards, on the other hand, outside give prominence to circular-arc when the left and right sides face of lumbal branch support part 10b is formed from top view, therefore, carry on the back the interface of support portion 10a and lumbal branch support part 10b, looking from the front becomes the outline line of having described slick and sly camber line.
In addition, can find out that from Fig. 2 A the left and right sides sidepiece of lumbal branch support part 10b is compared back of the body support portion 10a and further to nearby side-prominent, and forming chevron outstanding forward when looking from the side, the left and right sides sidepiece of this lumbal branch support part 10b becomes the heavy section 10d of its wall thickness much larger than the wall thickness of other parts.Heavy section 10d extends to the position of the part of bottom 10c.
On pedestal 6, but back rest supports unit 13 as shown in Figure 4 hypsokinesis for example is installed, the master unit 10 of backrest 3 is installed on back rest supports unit 13, and by spring unit 14 resiliency supported back rest supports unit 13.Spring unit 14 is covered from the below by cover body 15.Constitute the staple of support mechanism unit by pedestal 6, back rest supports unit 13 and spring unit 14.Below, simultaneously with reference to the accompanying drawing below Fig. 6, the installation constitution of supporting mechanism and backrest 3 is described.
(2) installation constitution of the supporting mechanism of seat support and backrest
The pedestal 6 of present embodiment is such metal forming product of cast aluminium or synthetic resin (can certainly be the sheet metal goods).Seat support 2 is to go up at the shelly seat board (inner casing) of synthetic resin to paste the structure of paying cushion pad,, need to prove that seat board is detachably mounted on seat support and supports on the shell 7 though omitted detailed icon.
As shown in Figure 4 and Figure 5, back rest supports unit 13 has: the 1st framework 16 that on overlooking face, is U word shape roughly by round metal bars bending is formed, by welding be fixed on the 1st framework 16 rearward end square shape box body (box) 17 and in side insertion box body 17 and a pair of the 2nd framework 18 of the left and right sides that is fixed.The rearward end of the 1st framework 16 is inserted in the box body 17, and utilizes screw to be fixed on the box body 17.In addition, the 1st framework 16 and the 2nd framework 18 also can be tubing products or sheet metal goods, and its section shape also can be square etc.
The leading section on the length direction of the left and right sides on the 1st framework 16 in the back rest supports unit 13 becomes an axial region 16a, and this axial region 16a can be installed on the pedestal 6 rotatably.Particularly, as shown in Figure 5 and Figure 6, in the inside of pedestal 6, configuration is nested in the following axle bed 19 on the axial region 16a and is nested in last axle bed 20 on the axial region 16a from the top from the below, and use pressing component 21 is held in the state that it can not be broken away from two axle beds 19,20.
Pressing component 21 be fixed on by screw 23 the convex portion 22 that is formed on the pedestal 6 above.And make axle bed 19,20 chimeric mutually, so that both do not misplace.In addition, in the present embodiment, following axle bed 19 has the function of preventing deviating from function and axle bed of elevating lever 9.Because axle bed 19,20 is divided into up and down two parts, so, can be installed in the 1st framework 16 of an integrally formed axial region 16a on the pedestal 6.In addition, therefore pedestal 6, allows the rotation of the 1st framework 16 towards the rear opening.And the bottom of pedestal 6 is towards the rear opening.The opening towards the rear of this pedestal 6 represents with symbol 6a that in Fig. 4 the front portion of spring unit 14 enters into peristome 6a.
As schematically shown in Figure 4 expression like that, on the inner face of the 6b of left and right sides wall portion at the rear portion that constitutes pedestal 6, insert and the resin making that has formed left and right sides portion on the lower-upper length direction is installed leads parts 24.Back rest supports parts 13 by guide sections part 24 be held in can not about the skew.In addition, as shown in Figure 6, on pedestal 6, utilize screw 25a to be fixed with the limiting component 25 that is the chi shape at left and right sides length direction, this limiting component 25 be used to stop back rest supports parts 13 the 1st framework 16 go beyond the limit upwards rotate.In addition, the symbol 25b among Fig. 6 is a buffer unit.
As Fig. 4 and shown in Figure 6, above-mentioned lock operation bar 8 is fixed on the rotating shaft 8a, and on rotating shaft 8a, is positioned at the inside of pedestal 6, can not dispose pair of right and left lock body 26 with the relative rotation.Lock body 26 is positioned at the front and back length below partly of the 1st framework 16 of back rest supports unit 13, make lock body 26 erect posture and the conversion mutually of laying across between the posture by lock lever 8, make back rest supports unit 13 can retroverted state and can not switch between the retroverted state thus.Fig. 6 represents the lock-out state that can not rotate.For example from Fig. 1 and Fig. 2, can find out, securing rod 8 form to the direction with the axis quadrature of rotating shaft 8a prolong avette.
Though omitted detailed diagram, need to prove, below left and right sides lock body 26, dispose the support component 27 on the bottom that can not be arranged on pedestal 6 with departing from.
As Fig. 4 and shown in Figure 7, the 2nd framework 18 of back rest supports unit 13, adopt the round metal bars material to make, rake 18b that it has horizontal shaft section 18a that direction to the left and right extends, extend from the front end of horizontal shaft section 18a and the column sections 18c that erects from the front end of rake 18b.Rake 18b is to the left and right the inclination attitude that topple in the outside, and is the posture that leans forward on side-looking face on main-vision surface, on the other hand, column sections 18c extends to the heavy section 10d of the master unit 10 on the backrest 3 always.
On the column sections 18c of the 2nd framework 18, by forcing chimeric or screw is fixed, embed plastic pin shape buffer body 28, as shown in Figure 7 and Figure 8, buffer body 28 is embedded into from the below in the downward opening installing hole 29 on the heavy section 10d that is formed on master unit 10.The part with installing hole 29 in the master unit 10 of backrest 3 becomes the installation portion of back rest supports unit, and on master unit 10, installation portion and heavy section 10d roughly form the state of protuberance.
Under the people does not lean against idling lotus state on the backrest 3, about the column sections 18c and the buffer body 28 of the 2nd framework 18, on main-vision surface, be the state that extends in parallel to vertical direction, and on side-looking face, be the state that extends to vertical direction that overlaps the to each other.Therefore, if the master unit 10 of backrest 3 is embedded into the below of buffer body 28, then master unit 10 is imported in the vertical tube part 28a of buffer body 28, and under move.
The chimeric length on above-below direction of the vertical tube part 28a of buffer body 28 and the vertical tube part 29a of installing hole 29 is greater than the outside dimension of the 2nd framework 18 in the back rest supports unit 13.In addition, between the buffer body 28 of the installing hole 29 of master unit 10 and the 2nd framework 18, can form several and allow both in gap that fore-and-aft direction or left and right directions relatively move.
Shown in Figure 10 A, on the heavy section 10d of master unit 10, overlook the roughly left and right sides that is the state that installing hole 29 is clipped in the middle on the face, be formed with the downward opening hole 30 of keeping out of the way.It is used to suppress the unbalanced stress that caused because of the contraction that is produced on the heavy section 18d when being shaped etc.
For example, shown in Fig. 3,7,8,11, on the front, bottom of master unit 10, give prominence to and be provided with the horizontal long rib 32 that extend to the left and right the position above more being positioned at than following ora terminalis, with with integrally formed its side-looking face of these horizontal long rib 32 continuums of states be claw portion 33 under shed, this claw portion 33 is fastened on the horizontal shaft section 18a of the 2nd framework 18 on the back rest supports unit 13 from the top.The opening edge of claw portion 33 between the upper and lower every, be slightly less than the outside dimension of the 2nd framework 18, therefore, claw portion 33 relies on the strain of self and engages (chimeric) on the horizontal shaft section 18a of the 2nd framework 18.
The two ends of the horizontal long rib 32 in the circumference of the bottom of master unit 10 and the position between the installing hole 29 are entrenched in the groove 34 on the rake 18b of the 2nd framework 18 (with reference to Fig. 3,7,8) from the top.Owing to the existence of this groove 34, can strengthen the positioning function of the 2nd framework 18 of master unit 10 and back rest supports unit 13.In addition, because the people leans against the load that is produced on the backrest 3 and not only acts on the column sections 18c of the 2nd framework 18, and act on the rake 18b of the 2nd framework 18, so acting on the load of the 2nd framework 18 and master unit 10 is dispersed in a big way, therefore, the high and good advantage of durability of installation strength that has master unit 10.
For example, shown in Fig. 3,6,7, below the horizontal long rib 32 of the bottom of master unit 10, be formed with the circular through hole 35 of the left and right sides pars intermedia that is positioned at master unit 10, and, in the left and right sides that through hole 35 is clipped in the middle, to give prominence to and be provided with the fitting portion 36 that on above-below direction, prolongs, it constitutes the casing shape by one group of rib towards front plate-like.On the other hand, the box body 17 of back rest supports unit 13 has the backplate 17a that overlaps with described fitting portion 36, shown in Figure 11 C, is formed with the 36a of platform portion on above-mentioned fitting portion 36, and it is used for from the backplate 17a of the box body 17 of carrying back rest supports unit, top 13.The back of box body 17 overlaps with the front of fitting portion 36.
Under the people did not lean against idling lotus state on the backrest, the rake 18b of the 2nd framework 18 on the back rest supports unit 13, the back of box body 17 and the front of fitting portion 36 were leaning forward of equal angular respectively on side-looking face.
When being installed in master unit 10 on the back rest supports unit 13, firmly be pressed into as long as left and right sides installing hole 29 is nested on the left and right sides buffer body 28 of back rest supports unit 13 and from the below.At the initial stage of this embedding, because the top of buffer body 28 is coniform, so, can successfully be nested in installing hole 29 on the conus portion 28a of buffer body 28 by inserting buffer body 28 along installing hole 29.
And, because the chimeric length of the vertical tube part 28a of buffer body 28 and the vertical tube part 29a of installing hole 29 is greater than the outside dimension of the 2nd framework 18 on the back rest supports unit 13, so, by master unit 10 is moved down under the state that keeps its correct posture, can be entrenched in claw portion 33 on the horizontal shaft section 18a of the 2nd framework 18.Then, when the later stage that the claw portion 33 of master unit 10 is embedded on the 2nd framework, utilize the strain of master unit 10, make under the rear portion of box body 17 ora terminalis 17a chimeric (being stuck in) on the 36a of platform portion of fitting portion 36.Come thus master unit 10 is installed on the back rest supports unit 13.
In addition, because moving vertically downward of corresponding master unit 10, the fitting portion 36 of master unit 10 and the back of box body 17 form and lean forward, so, after in the horizontal shaft section 18a of the 2nd framework 18 is entrenched in claw portion 33, the front end butt of the 36a of platform portion under the rear portion of box body 17 on ora terminalis and the fitting portion 36, therefore, because the existence of the 36a of platform portion can not destroy the chimeric of claw portion 33 and horizontal shaft section 18a.
When the people on being sitting in seat leans against on the backrest 3, be installed in the external force effect that the buffer body 28 on the column sections 18c of the 2nd framework 18 is subjected to rearward toppling over, but in the present embodiment, because buffer body 28 is at 4 positions of vertical tube part 28a and 3 grades of circular protrusion 28c and installing hole 29 butts of master unit 10, concentrate on the privileged site of installing hole 29 so can prevent stress, thereby have the advantage that can improve support strength and durability.Though buffer body 28 is a synthetic resin system, some strains can take place in what, and this point helps just to prevent that stress is concentrated.
In addition, when the people on being sitting in seat leans against on the backrest 3, ora terminalis 17a is center and the moment of hypsokinesis under producing with the rear portion of box body 17 on the master unit 10 of backrest 3, but because claw portion 33 is less near ora terminalis 17a under the rear portions of box body 17 and the moment that acts in the claw portion 33, so claw portion 33 can not lost.In addition, can play the effects that the fitting portion 36 that makes master unit 10 and box body 17 closely contacts by the load that layback produced of backrest 3, so, can not take place because layback makes the bad phenomenon of the 36a of platform portion from box body 17 disengagings.
In addition, the left and right sides pars intermedia of the backplate 17a of the box body 17 that constitutes back rest supports unit 13 be formed with towards below projection 17b, and on cover body 15, be formed with the hole 37 (with reference to Fig. 6,11,4) that embeds projection 17.
(3) spring unit
Below, mainly according to Fig. 4 and Fig. 6, spring unit 14 is described.Spring unit 14 has: as the compression helical spring 40 of an example of spring body, from side nearby support the front springs seat 41 of this compression helical spring 40, before and after Rear springs seat 42, the spiral shell button of back support compression helical spring 40 is entrenched in the spring base 41,42 adjusting rod (adjusting bolt) 43, can not be entrenched in the operating grip 44 on the adjusting rod 43 from the rear with the relative rotation and be entrenched in shaft support part 45 on the front springs seat 41 from side nearby.
On the other hand, in the rear end of Rear springs seat 42, be formed with the minor diameter tubular convex 42a of portion, the 42a of this convex portion can not be embedded in the hole 17c on the backplate 17a of the box body 17 that is formed on the back rest supports unit 13 with being offset.In addition, on the 42a of convex portion of Rear springs seat 42, embedding has adjusting rod 43, and a 43a of adjusting rod 43 exposes from the rear of box body 17.
Be embedded with the nut 47 that can not rotate in the front springs seat 41, in this nut 47, screw in adjusting rod 43.In addition, embedding at the leading section of adjusting rod 43 has distance member 48, and distance member 48 is configured in the shaft support part 45.On the front end face of adjusting rod 43, utilize screw 49 to be fixed with packing ring.
A 43a of adjusting rod 43 is formed the non-circular of hexagon etc., the 44a of convex portion of embedding operation handle 44 on this 43a.Operating grip 44 is to constitute, forwardly be formed with pawl 50a on the part 50 by utilizing 2 resin parts in front and back 50,51 screw 52 to be fixed together, and this pawl 50a utilizes its strain to block or throw off a 43a of adjusting rod 43.Therefore, utilize the strain of pawl 50a, can be installed to operating grip 44 on the adjusting rod 43, or pull down from adjusting rod 43.In addition, though also can screw in or utilize fixing grade of pin that operating grip 44 is installed on the adjusting rod 43 by the spiral shell button, the advantage of present embodiment be need once pushing or extract operation just can finish installation or removal.
As shown in Figure 6, the 44a of convex portion of operating grip 44 is embedded in the through hole 35 of master unit 10 by activity.
In the present embodiment, the handle portion 44b of operating grip 44, its integral body forms roughly spherical, particularly, be form with the direction of the axis positive angle of adjusting rod 43 (in Fig. 6, prolong to above-below direction roughly) prolong roughly avette, and, form the convex 44a of portion at the position of departing from the one end along its length direction.Avette owing to handle portion 44b is formed, so the palm to the people can not cause burden when operation, and, switching rotary manipulation by utilizing palm, can successfully repeatedly rotate.In addition, owing to stagger from the end of handle portion 44b in the position of the 44a of convex portion,, therefore, can be rotated effortlessly so when being rotated, can apply big moment.
The initial elastic force that Fig. 6 represents compression helical spring 40 is near the state of weak state, stretching when drawing front springs seat 41 by rotating operating handle 44 from this state, and initial elastic force increases.In addition, when the initial elastic force that makes compression helical spring 40 reached the most weak state, distance member 48 performance position-limiting actions stoped the forward motion of front springs seat 41.
Because the 44a of convex portion of operating grip 44 is embedded in the through hole 35 of master unit 10, so if fitting portion 36 breaks away from from box body 17, backrest 3 can 13 disengagements (therefore, operating grip 44 has the function as safety device) from the back rest supports unit yet.In addition, can be not the 44a of convex portion of operating grip 44 be configured in the through hole 35 (in this case yet, operating grip 44 all exposed rear at master unit 10), and by other component configuration that adjusting rod 43 is connected in through hole 35, bring into play function as safety device.
(4) sum up
When the people on being sitting in seat leans against on the backrest 3, because the fulcrum that fascinates of back rest supports unit 13 is different with the fulcrum that fascinates of spring unit 14, so Rear springs seat 42 is pressed towards side nearby, thus, backrest 3 fascinates after carrying out in compression helical spring 40 compressions.When fascinating behind backrest 3, spring unit 14 fascinates after also carrying out, and Rear springs seat 42 carries out relative the slip with adjusting rod 43.And, because compression helical spring 40 is configured in the rear of pedestal 6, so can prolong the length of compression helical spring 40.
In addition, when backrest 3 hypsokinesis, acting on the load (moment) on the spring and the elastic recovering force of spring increases simultaneously, in this case, if the increment rate of load is consistent with the increment rate of elastic recovering force, then in the gamut of fascinating to the reaction force equalization of human body, can obtain comfortable swinging condition like this.
But, if the stroke of spring is little, then the increment rate of the increment rate of moment and elastic recovering force departs from easily, cross because of spring force and weakly to fascinate after sharp, otherwise or cross strong hypsokinesis fully because of spring force, the bounce that in the gamut of hypsokinesis, is difficult to keep certain (that is, being difficult to adjust).
And present embodiment, owing to can increase the flexible stroke of compression helical spring 40, so can be easily the increment rate of elastic recovering force be adjusted to and the increase of loading is close.And, because the rotating fulcrum 16a of back rest supports unit 13 is positioned at than the more close position nearby of the front end of spring unit 14, so can enough spring units 14 support on the back rest supports unit 13 away from the part of the fulcrum that fascinates (promptly, support span ratio length in the past), therefore, can suppress spring unit 14 is acted on excessive moment,, also can realize the slow hypsokinesis of backrest 3 based on this point.
In addition, wave chair, exist since when waving the relative seat support of backrest open backward and between user's back and backrest, produce the phenomenon of sliding (clothes back collapse phenomenon or back friction phenomenon), and present embodiment since the rotating fulcrum 16a of back rest supports unit 13 than the position of more close top of common seat and more approaching side nearby, so seat support 2 is little with the amount of opening of backrest 3 when waving, therefore, the advantage that has the collapse phenomenon or the back friction phenomenon that can significantly suppress clothes back.
The seat of present embodiment constitutes support mechanism unit to pedestal 6, back rest supports unit 13 and spring unit 14 as critical piece.And, constitute a kind of independently bindiny mechanism by back rest supports unit 13, spring unit 14 and pedestal 6, and, utilize limiting component 25 to stop above upwards the rotating of going beyond the limit of back rest supports unit 13.Therefore, support mechanism unit can be carried independently or keeping, therefore,, can be improved the efficient of assembling operation if on the seat that is applied to assemble in the disposable mode of pushing.
In addition, owing to when backrest 3 is installed, only need master unit 10 is passed through disposable pressing operation, the 2nd framework 18 that is embedded into back rest supports unit 13 from the top gets final product, so can carry out the installation of backrest 3 with high operating efficiency.This point is a remarkable advantage of the present invention.
As shown in Figure 3A, on the master unit 10 of backrest 3,, be formed with 56 groups of the embedded holes of opening forwards, backwards as the structure that is used to install cushion pad 11,12.Omitted concrete diagram herein, but cushion pad the 11, the 12nd is installed on the plastic inner casing by skin material, on inner casing, is formed with and relies on strain and can embed in the embedded hole 56 or the pawl of therefrom extracting.Because the front surface of master unit 10 is level and smooth, so also can select not install the user mode of cushion pad 11,12.In addition, when cushion pad is set, though can not be provided with respectively discretely up and down yet, if but as present embodiment, will separate up and down, then for example by changing the color and the material of cushion pad 11,12 up and down, can carry out diversified design, thereby have the advantage that improves design freedom.
Though also can utilize pin that the front end of spring unit 14 and pedestal 6 are linked, if but as present embodiment, the axle bed parts 46 of concavity come back shaft to prop up parts 45 to utilize its side-looking face to be forward, then have the advantage that can carry out the assembling of support mechanism unit simply.Promptly, in the present embodiment, at first back rest supports unit 13 is installed on the pedestal 6, the front end of spring unit 14 is contacted with axle bed parts 46, under this state, push back rest supports unit 13 downwards, make the 1st framework 16 enter into the inside of pedestal 6, use screw 25a (with reference to Fig. 6) that limiting component 25 is fixed on the pedestal 6 then, by such operation, back rest supports unit 13 and spring unit 14 are installed on the pedestal 6 inseparably.Can assemble support mechanism unit so simply, also be a remarkable advantage of present embodiment.
(5) the 2nd embodiment
Figure 12 and Figure 13 represent the 2nd embodiment.In the present embodiment, the claw portion 33 of the master unit 10 of backrest 3 is to side opening nearby.In addition, though do not express integral body in the drawings, it has the back rest supports unit 13 with the 1st embodiment same structure.
And, in the present embodiment, when being installed in backrest 3 on the back rest supports unit 13, utilize the 2nd framework 18 of back rest supports unit 13 and the strain of master unit 10, master unit 10 is entrenched in fully on the column sections 18c of the 2nd framework 18, chimeric mutually the horizontal shaft section 18a of the 2nd framework 18, master unit 10 and claw portion 33 then.
(6) other
The present invention can also carry out various specific enforcements except the above embodiments.For example, can at random change the shape of backrest unit and the shape of pedestal according to requirements such as designs.
And the present invention also can be applied to have the seat of following simple structure, that is, seat support can with backrest after fascinate carry out linkedly backward movement and after fascinate.And go for as arenas with seat and vehicle seat used fixed seat.
Claims (10)
1. seat, have seat support, from the pedestal of the described seat support of supported underneath, by the back rest supports unit can after be installed in with fascinating backrest on the described pedestal and resiliency supported described back rest supports unit and backrest after the spring members that fascinates, it is characterized in that:
Described spring mechanism, be the flexible state of direction forwards, backwards on the face overlooking, spring mechanism is supported from the place ahead by pedestal, and the load that is produced by fascinating behind the backrest acts on spring mechanism from rear roughly, and, the rearward end of described spring mechanism, be positioned at the position of more leaning on the rear than the fulcrum that fascinates of back rest supports unit, and the leading section of spring mechanism, be positioned at the position of more leaning on the below than the fulcrum that fascinates of back rest supports unit, and allowing described spring mechanism is the center with the support portion of described relatively pedestal, fascinates with backrest and back rest supports unit.
2. seat according to claim 1, it is characterized in that: described back rest supports unit and backrest, be manufactured into separate parts, rear portion in described back rest supports unit, the column sections of extending above roughly with many of the state configuration of the appropriate intervals of about being on the main-vision surface, being separated by, on the other hand, be formed with installation portion on described backrest, this installation portion has the installing hole towards lower opening that is nested in from the top on the described column sections.
3. seat according to claim 2, it is characterized in that: described backrest, has plastic master unit, part and the part that is used to be installed on the back rest supports unit that this master unit is used for support is sitting in the health of the people on the seat link into an integrated entity, and, master unit extends to the below that is lower than seat surface, on described master unit, is formed with the installation portion that is embedded in from the top on the column sections of described back rest supports unit.
4. seat according to claim 3, it is characterized in that: described back rest supports unit has: leading section be installed on the pedestal and forwards, backwards direction extend the 1st framework and both sides metal bar system of stretching out or the 2nd framework of metal pipe material system to the left and right at the rear of the 1st framework, about the 2nd framework, have be to the left and right the rake of toppling in the outside on the main-vision surface and be arranged on the rake front end towards above column sections, on described column sections, installation portion from the nested described backrest in top, on the other hand, be formed with groove on the master unit on the described backrest, this groove is embedded in from the top on the rake of the 2nd framework of described back rest supports unit.
5. seat according to claim 4, it is characterized in that: on the column sections of described back rest supports unit, the plastic pin shape buffer body that extends upward from the upper end of this column sections is installed, and described pin shape buffer body is embedded in the installing hole of the master unit on the backrest.
6. seat according to claim 4 is characterized in that: on the master unit of described backrest, be formed with claw portion, this claw portion from the top or from the rear by on the root of forcing chimeric the 2nd framework that is entrenched in described back rest supports unit.
7. seat according to claim 1, it is characterized in that: described spring mechanism is a compression helical spring, it is assembled in the spring unit, described spring unit, except described compression helical spring, also have: the front springs seat that supports described compression helical spring from the place ahead, support the Rear springs seat of compression helical spring from the rear, the operating grip at the screw-type adjusting rod at the interval of spring base and the interval by spring base before and after regulating from the rear rotary manipulation adjusting rod of Rear springs seat before and after being used to regulate, expose from the rear of Rear springs seat by the rearward end that makes described adjusting rod, and allow to utilize described operating grip rotation adjusting rod.
8. seat according to claim 7, it is characterized in that: described backrest and back rest supports unit are manufactured into separate parts, described backrest, has plastic master unit, this master unit links into an integrated entity part that is used to support the health that is sitting in the people on the seat and the part that is used to be installed on the back rest supports unit, and the bottom of this master unit is on its backsight face and the equitant state in described back rest supports unit, on the other hand
Rear end in described back rest supports unit, be formed with the backplate that supports described Rear springs seat from the rear, the adjusting rod of described spring unit is rearward exposed from this backplate, and, on the overlapping position of the backplate on the principal part of described backrest, be formed with and be used to allow described operating grip to be combined on the adjusting rod or from hole that adjusting rod breaks away from described back rest supports unit.
9. seat according to claim 8, it is characterized in that: described operating grip has: can not be entrenched in the convex portion on the described adjusting rod with the relative rotation and be arranged on the handle portion of the rear end of this convex portion integratedly, convex portion is entrenched in the hole of master unit of described backrest, on the other hand, described handle portion forms avette.
10. the support mechanism unit of a seat, it is characterized in that: have: from the pedestal of supported underneath seat support, for backrest is installed can after be installed in with fascinating back rest supports unit on the described pedestal and the described back rest supports of resiliency supported unit after the spring unit that fascinates
Described spring unit has: overlook the compression helical spring that is in front and back upwardly extending posture on the face and is the configuration of hypsokinesis posture on side-looking face, support the front springs seat of described compression helical spring from the place ahead, the adjusting rod of the screw-type at the interval of spring base before and after the Rear springs seat and being used to that supports described compression helical spring from the rear is regulated, described adjusting rod, with the concentric direction in the axle center of compression helical spring on extend, and, the rear end of described adjusting rod, expose at the rear of Rear springs seat and fitting operation handle on this exposed division
On the other hand, the rotating fulcrum of described back rest supports unit, the front end that is positioned at than spring unit more leans on top and position nearby, rear portion in the back rest supports unit, be formed with the support portion of Rear springs seat, the leading section of spring unit, support in revocable mode by pedestal, to allow spring unit and back rest supports unit together to fascinate, and, on described pedestal, be fixed with the upwards limiting component of turned position of restriction back rest supports unit, the back rest supports unit is remained at limited parts under the state that can not upwards rotate, described compression helical spring is applied initial elastic force.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005026148 | 2005-02-02 | ||
| JP2005026148A JP4575183B2 (en) | 2005-02-02 | 2005-02-02 | Chair |
| JP2005-026148 | 2005-02-02 | ||
| JP2005-344243 | 2005-11-29 | ||
| JP2005344243A JP4988188B2 (en) | 2005-11-29 | 2005-11-29 | Chair with backrest |
| JP2005344243 | 2005-11-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1823657A true CN1823657A (en) | 2006-08-30 |
| CN1823657B CN1823657B (en) | 2011-11-23 |
Family
ID=36934640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100067079A Expired - Fee Related CN1823657B (en) | 2005-02-02 | 2006-02-05 | Chair and support mechanism unit thereof |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4575183B2 (en) |
| CN (1) | CN1823657B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103799740A (en) * | 2012-11-06 | 2014-05-21 | 国誉家具株式会社 | Chair |
| CN104540419A (en) * | 2012-05-31 | 2015-04-22 | 株式会社伊藤喜 | Chair |
| CN104602568A (en) * | 2012-09-05 | 2015-05-06 | 高德瑞治博伊斯有限公司 | Chair with adjustable backrest and seat |
| CN111315260A (en) * | 2017-10-20 | 2020-06-19 | 埃科尼斯股份公司 | Seat module and tilt mechanism |
| CN111688550A (en) * | 2019-03-14 | 2020-09-22 | 本田技研工业株式会社 | Vehicle seat |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7091214B2 (en) * | 2018-09-28 | 2022-06-27 | タカノ株式会社 | Chair spring support structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7830726U1 (en) * | 1978-10-14 | 1979-02-08 | Merz, Otto, Schaffhausen (Schweiz) | CHAIR, IN PARTICULAR ORCHESTRA CHAIR |
| US4232900A (en) * | 1979-03-26 | 1980-11-11 | Collier-Keyworth Company | Chair control |
| EP0949875B1 (en) * | 1996-10-14 | 2001-11-21 | Vitra Patente AG | Chair frame, control mechanism and upholstery |
| JPH10179325A (en) * | 1996-12-20 | 1998-07-07 | Okamura Corp | Device for attaching back plate of chair |
| CN2392444Y (en) * | 1999-07-07 | 2000-08-23 | 顺德恒隆家具制造有限公司 | Multifunction chair |
-
2005
- 2005-02-02 JP JP2005026148A patent/JP4575183B2/en not_active Expired - Fee Related
-
2006
- 2006-02-05 CN CN2006100067079A patent/CN1823657B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104540419A (en) * | 2012-05-31 | 2015-04-22 | 株式会社伊藤喜 | Chair |
| CN104602568A (en) * | 2012-09-05 | 2015-05-06 | 高德瑞治博伊斯有限公司 | Chair with adjustable backrest and seat |
| CN104602568B (en) * | 2012-09-05 | 2017-03-29 | 高德瑞治博伊斯有限公司 | Chair with adjustable backrest and seat support |
| CN103799740A (en) * | 2012-11-06 | 2014-05-21 | 国誉家具株式会社 | Chair |
| CN103799740B (en) * | 2012-11-06 | 2017-10-27 | 国誉株式会社 | Chair |
| CN111315260A (en) * | 2017-10-20 | 2020-06-19 | 埃科尼斯股份公司 | Seat module and tilt mechanism |
| CN111315260B (en) * | 2017-10-20 | 2023-07-21 | 埃科尼斯股份公司 | Seat module and tilting mechanism |
| CN111688550A (en) * | 2019-03-14 | 2020-09-22 | 本田技研工业株式会社 | Vehicle seat |
| CN111688550B (en) * | 2019-03-14 | 2022-02-25 | 本田技研工业株式会社 | Vehicle seat |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006212122A (en) | 2006-08-17 |
| CN1823657B (en) | 2011-11-23 |
| JP4575183B2 (en) | 2010-11-04 |
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