CN1325002C - Buckle of safety belt of seat - Google Patents

Buckle of safety belt of seat Download PDF

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Publication number
CN1325002C
CN1325002C CNB011208627A CN01120862A CN1325002C CN 1325002 C CN1325002 C CN 1325002C CN B011208627 A CNB011208627 A CN B011208627A CN 01120862 A CN01120862 A CN 01120862A CN 1325002 C CN1325002 C CN 1325002C
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CN
China
Prior art keywords
locking
swinging end
hyoplastron
snap close
end portion
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Expired - Lifetime
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CNB011208627A
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Chinese (zh)
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CN1390744A (en
Inventor
胜山宗一
森信二
室町哲史
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Tokai Rika Co Ltd
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Tokai Rika Co Ltd
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Priority to CNB011208627A priority Critical patent/CN1325002C/en
Publication of CN1390744A publication Critical patent/CN1390744A/en
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Publication of CN1325002C publication Critical patent/CN1325002C/en
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Abstract

The present invention relates to a seat safety buckle which can prevent the shifting out of a tongue plate caused by retreat and can not increase force used for releasing locking conditions. In the present invention, a base comprises an inserting passage, and the tongue plate with engaging holes is inserted in the inserting passage in a moving out mode; a locking fastener comprises a locking fastener swinging end part which swings between a locking position and a releasing position; a locking member comprises a pair of locking swinging end parts swinging between the locking position and the releasing position, a blocking operation end part used for releasing locking conditions, a counterweight part, a latch spring, a releasing button and an ejector. When the locking fastener swinging end is locked in the locking position, the locking swinging end parts swing on the locking fastener swinging end part and are stopped in the state, namely that the locking swinging end parts are pressed to the two engaging holes and are pressed along the insertion direction of the tongue plate for locking the locking state; the counterweight parts are integrally formed on the side surface of the locking swinging end parts for causing the whole barycenter to tilt to the locking swinging end parts.

Description

Buckle of safety belt of seat
The present invention relates to be used for the buckle of safety belt of seat of the safety belt of automobile or aircraft, relate in particular to the buckle of safety belt of seat of the measure of having taked so-called anti-retrogression (reverse) G.
Usually, the buckle of safety belt of seat of the above-mentioned type is for example open in Japanese Patent Application Publication (JP-A) Nos.60-18102,60-75004 and 60-75005.In the disclosed buckle of safety belt of these documents, hyoplastron is pinned by this buckle of safety belt, like this, the snap close piece of this buckle of safety belt meshes with the latch engagement hole of hyoplastron by an end that inserts hyoplastron in the buckle of safety belt main body, and seat harness (belt) is inserted through this hyoplastron.And this locking-in state is locked by locking piece, thereby prevents that hyoplastron is from buckle of safety belt main body get loose (disengagement).
When removing the lock-out state of snap close by the pressing operation of release-push, latch engagement is removed, and hyoplastron gets loose from the buckle of safety belt main body.
The structure of the buckle of safety belt of the above-mentioned type is like this, in case promptly hyoplastron inserts the buckle of safety belt main body fully to latched position and locking, even impact force action is on this buckle of safety belt, this hyoplastron also can reliably keep lock-out state, and the pinning of hyoplastron and lock-out state are disengaged.For example, towards the spring promotion (compressing) constantly of latched position quilt, release-push is back to initial position to snap close by spring part.The structure of release-push that is used to discharge this pinning and lock-out state is for enough very little power pushing.
Safety device has also been proposed recently, wherein, when having an accident, for example when vehicle bumps against with other vehicle or barrier, this buckle of safety belt self that hyoplastron has been locked by buckle of safety belt can be because the transient force for example explosive force of gunpowder and instantaneous being pulled, the lax of seat harness is eliminated and is tightened up, thereby prevents the lax variety of issue that produces owing to seat harness.
But, this buckle of safety belt self that is locked by buckle of safety belt when hyoplastron is during by instantaneous pulling like this, and the so-called G that falls back takes place snap close.Therefore, in common buckle of safety belt,, also have because the lock-out state of snap close is disengaged the danger that the hyoplastron generation that causes gets loose even be not pressed when release-push.In other words, when buckle of safety belt self with the direction of seat harness tension during by instantaneous strong pulling, when this seat harness is tensioned to the limit, the pulling of buckle of safety belt self, the pulling of buckle of safety belt body shell just is forced to stop fast.Therefore, under the situation of not pushing, the inertia force suitable with the gross mass that is loaded on release-push, locking mechanism and analog in the buckle of safety belt body shell so that the directive effect that lock-out state is removed on release-push, locking mechanism and analog.Therefore, there is lock-out state may be forced to remove the problem that may get loose from the buckle of safety belt main body with hyoplastron.
Therefore, smash, get loose, a kind of like this method is provided, promptly increase the spring force that is used for continuing snap close is pressed to the spring of lock-out state in order to prevent hyoplastron at common seat harness.But, at this moment the size of spring will become bigger, pressing force, and the release force that promptly is used for removing against the spring force of spring the required release-push of the lock-out state of snap close increases.
Consider above-mentioned situation, an object of the present invention is to provide a kind of buckle of safety belt of seat, this buckle of safety belt can prevent getting loose of the hyoplastron that caused by the so-called G of falling back under the situation of the release force that does not have to increase the state that unlocks.
A first aspect of the present invention is a kind of buckle of safety belt of seat, comprising:
One pedestal, this pedestal comprises:
One inserts passage, has the hyoplastron of engaging hole to insert this insertion passage or shifts out from this insertion passage;
A pair of upright side walls, each sidewall are arranged in the respective side edge of inserting passage; And
One engaging hole;
One snap close, this snap close comprises:
Snap close ledge portion, this snap close ledge portion are swingably by the supporting part supporting that forms on the pedestal sidewall; And
One snap close swinging end part, this snap close swinging end part is swung between with upper/lower positions:
Locked position, in this position, when hyoplastron was inserted into the locked position that inserts passage, the snap close swinging end partly meshed the engaging hole of insertion hyoplastron and the engaging hole of pedestal, so that hyoplastron is pinned with respect to pedestal, and
Pin the off-position, in this position, locking-in state is removed;
One locking piece, this locking piece comprises:
Ledge portion, this ledge portion are inserted in the support holes that forms on the pedestal sidewall swingably;
One locking swinging end portion, this locking swinging end portion is swung between with upper/lower positions:
Latched position, in this position, when locking-in state, locking swinging end portion leans against snap close swinging end part with such state lock, promptly under this state, the snap close swinging end partly is pressed towards the engaging hole of hyoplastron and the engaging hole of pedestal, and snap close swinging end part is along the direction pressurized of hyoplastron insertion simultaneously, therefore lock this locking-in state, and
The locking off-position, in this position, lock-out state is removed;
One lock operating end portion, this lock operating end portion is with respect to the opposite side of ledge portion at locking swinging end portion, this ledge portion is inserted between this lock operating end portion and the locking swinging end portion, by this lock operating end portion, when locking, when lock operating end portion during along direction pressurized that hyoplastron inserts, locking swinging end portion swings to the locking off-position, thereby removes this lock-out state; And
One counterweight part, by this counterweight part, the center of gravity of locking piece is compared with ledge portion and more is partial to locking swinging end portion;
One latch spring, when locking, the direction elasticity that this latch spring inserts with hyoplastron is substantially oppressed the locking swinging end portion of locking piece, so that keep this lock-out state;
One release-push, this release-push comprises:
Slipper, this slipper is being installed in the elongated hole that is formed on the pedestal sidewall along the mode that the direction that hyoplastron inserts and shifts out is slided; And
One button, when pushing with the direction of hyoplastron insertion against the spring force of latch spring, the direction that this button inserts with hyoplastron pressure-locks the lock operating end portion of part, makes locking swinging end portion swing with the direction that hyoplastron shifts out, thereby unlocks state; And
One pusher, when this pusher is pressed to locked position by hyoplastron, this pusher guiding snap close swinging end partly inserts the engaging hole of hyoplastron and the engaging hole of pedestal, thereby can pin and lock, when when pushing release-push and unlock state, this pusher is partly pressed to the snap close swinging end and is pinned the off-position, thereby removes locking-in state and hyoplastron is shifted out from the insertion passage of pedestal.
According to above-mentioned aspect of the present invention, the snap close swinging end of compressing of the locking swinging end of locking piece and locking snap close, so that pin hyoplastron towards engaging hole, the direction of inserting along hyoplastron ((being upstream side) is to rear side (being the downstream) from the front side) is pushed this hyoplastron simultaneously.Therefore, when the so-called G that falls back takes place, promptly when the instantaneous pulling owing to pedestal was stopped to produce inertia force fast, the direction that inertia force inserts along hyoplastron locked swinging end and presses the direction of snap close swinging end (side direction rear side in the past) to act on the locking swinging end during promptly along locking.Therefore, this lock-out state is strengthened greatly.
And, the more close locking swinging end of the center of gravity of locking piece, rather than lock operation end, and in the locking piece quality of locking swinging end one side because counterweight part and bigger.Therefore, act on the inertia force of directive effect on release-push that the inertia force on the locking swinging end unlocks greater than the edge along locking direction.Therefore, the lock-out state of snap close can keep more firmly by locking piece.Therefore can reliably prevent shifting out of hyoplastron when not carrying out the pressing operation of release-push, the security performance of buckle of safety belt of seat improves greatly.
And, the locking swinging end of locking piece of locking-in state that is used to lock snap close by latch spring to strengthen the direction compressing of lock-out state, i.e. the direction compressing of inserting with hyoplastron.In addition, be not used in the spring part with the direction compressing snap close opposite with the hyoplastron direction of insertion, these are different with ordinary construction.Therefore, in ordinary construction, remove the lock-out state of snap close (therefore, needing bigger power to push this release-push) thereby need push release-push by the elastic force that overcomes this spring part.Yet, in the present invention, do not need to push the lock-out state that release-push is removed snap close with the direction that hyoplastron inserts by against.Therefore, the pressing force of release-push is that release force can reduce, and security further improves.
A second aspect of the present invention is the buckle of safety belt of seat according to first aspect, wherein: the support holes that is formed on the pedestal sidewall is respectively done circular, the ledge portion of locking piece is inserted this support holes, and on each sidewall, be formed with so that the lead-ingroove that is communicated with support holes, and opening arranged in the outer end of sidewall.
According to above-mentioned aspect of the present invention, a pair of ledge portion of locking piece can simply be inserted in the support holes by this way, promptly is placed on to be formed on the pedestal sidewall this and to insert to the respective openings end of lead-ingroove and along lead-ingroove.Just, the assembling workability that locking piece is installed in the pedestal strengthens.
A third aspect of the present invention is according to first or the buckle of safety belt of seat of second aspect, wherein locking piece is such formation, and promptly ledge portion, locking swinging end portion, lock operating end portion and counterweight part are to pass through press forming and whole formation by metal plate.
According to above-mentioned aspect of the present invention, locking piece is formed by the metal plate press forming fully.Therefore, compare, improved the simplicity of making, reduced cost with the situation that locking piece is made by sintering metal.
A fourth aspect of the present invention be according to first to the third aspect any one buckle of safety belt of seat, wherein: the locking slipper of swinging with locking swinging end portion is formed at the place, two ends of the horizontal locking swinging end portion of locking piece respectively, and the slidingsurface that respectively locks slipper that the direction of inserting and shifting out with hyoplastron on the respective transversal end of snap close swinging end part is slided forms circular arc.
According to above-mentioned aspect of the present invention, the locking slipper of the locking piece that slides on the snap close swinging end of snap close forms at two places respectively, promptly in two transverse end of locking piece.Therefore, compare with the situation of sliding in a place, when sliding on two transverse end of slipper at the snap close swinging end of locking swinging end, slide can be stablized, and the lock-out state of snap close also can be stablized.Therefore can improve security.
And the locking slipper that slides on two transverse end of snap close swinging end respectively has the circular arc slidingsurface.Therefore, the contact area of slidingsurface reduces, and the slip loss reduces.Therefore, hyoplastron is inserted this insertion passage so that the power of locking swinging end swing and the pressing force (being release force) of release-push also can reduce.
A fifth aspect of the present invention is according to any one buckle of safety belt of seat in first to fourth aspect, wherein: the locking slipper of locking piece respectively comprises a slidingsurface, this slidingsurface slides against snap close swinging end part and on this snap close swinging end part when locking-in state is removed, and this slidingsurface forms the arcuate surface that concaves.
According to above-mentioned aspect of the present invention, when pinning release conditions, the snap close swinging end is against the respective surfaces of the locking slipper of locking piece, rear surface for example, and around the oscillation center axis rotation of snap close swinging end.Each slidingsurface that locks slipper forms the spill arcuate surfaces, and therefore, the snap close swinging end can be around its oscillation center axis with the smooth rotation with the state of spill arcuate surfaces sliding-contact.Therefore, can reduce the slip loss of snap close swinging end.And the snap close slipper continues a surface local ground sliding-contact with the locking slipper separately.Therefore can prevent shake (instability of snap close swinging end) of snap close swinging end, the snap close releasing operation can be stablized.
A sixth aspect of the present invention is according to any one buckle of safety belt of seat in first to the 5th aspect, wherein: locking piece is installed on the block, this block is formed from a resin and has spring that groove part is installed, and an end of latch spring is installed groove part with the spring of block and cooperated.
According to above-mentioned aspect of the present invention, locking piece, block and latch spring be assembling by this way in advance, promptly the block of being made by synthetic resin is installed in the locking piece, an end of latch spring and the engagement of the supporting groove of block, and the pre-constructed unit that forms like this can be installed in the pedestal.Therefore, the number of the installation step of buckle of safety belt of seat can reduce, and the assembling workability that locking piece is installed in the pedestal can improve.
And block is made by resilient synthetic resin, and therefore, it can be installed in the locking piece that is made of metal simply, reliably and apace by assembling.In addition, the degree of the whole close installation of these two parts can improve.And inserting latch spring in the supporting groove of block can be simple and reliable and highly precisely be installed in predetermined installation site in the locking piece.
A seventh aspect of the present invention is the buckle of safety belt of seat according to the 6th aspect, and wherein: block comprises stopper portions, and this stopper portions and block are whole to be formed, and under lock-out state against the slipper of release-push.
According to above-mentioned aspect of the present invention, with locking piece engagement and the stopper portions that is installed in the block in this locking piece slipper when the locking against release-push.Therefore can prevent to remove under the situation of not pushing release-push this lock-out state (releasing of this lock-out state is that shake (instability) of locking piece causes during by locking) security performance improves greatly.
A eighth aspect of the present invention is that wherein: this locking piece comprises according to first or the buckle of safety belt of seat of second aspect:
One lock body part, comprise ledge portion, locking swinging end portion, lock operating end portion and under lock-out state against the stopper portions of the slipper of release-push, these parts all by metal plate by press forming and whole formation; And
One locking piece counterweight part comprises counterweight part and the pair of locking slipper that is positioned at these counterweight part two transverse end places, and this counterweight part and locking slipper pass through press forming and whole formation by metal plate;
Wherein the locking piece counterweight part also comprises spring installation groove part, and an end of latch spring inserts this spring groove part is installed, and this locking piece counterweight part is to be installed on the lock body part can install with dismountable mode.
According to above-mentioned aspect of the present invention, the locking piece counterweight part that can install and be removably mounted on the lock body part is made of metal.Therefore, mechanical strength can increase, and the quality of counterweight part self also increases.
Therefore, can be in the quality of locking swinging end one side greater than quality in lock operation end one side.Therefore, when the so-called G that falls back took place, the inertia force that acts on the locking swinging end with locking direction can increase greatlyyer.Therefore, the lock-out state of snap close can be by the more firm maintenance of locking piece.Therefore, can prevent shifting out of hyoplastron more reliably when not carrying out the pressing operation of release-push, the security performance of buckle of safety belt of seat improves greatly.
And, lock body part, locking piece counterweight part and latch spring be assembling by this way in advance, be that the locking piece counterweight part is installed on the lock body part, one end and the lock body of latch spring partly mesh, and comprise that the pre-constructed unit of these three parts can be installed in the pedestal.Therefore, the decreased number of the installation step of buckle of safety belt of seat, the assembling workability that locking piece is installed in the pedestal improves.
The pair of locking slipper of the locking piece counterweight part of sliding on the snap close swinging end forms at two places respectively, promptly in two transverse end of locking piece counterweight part.Therefore, compare with the situation of sliding in a place, when sliding on two transverse end of pair of locking slipper at the snap close swinging end, slide can be stablized, and the lock-out state of snap close also can be stablized.Therefore, security improves.
A ninth aspect of the present invention is the buckle of safety belt of seat according to eight aspect, and wherein: lock body partly comprises stopper portions, and this stopper portions and lock body part is whole to be formed, and under lock-out state against the slipper of release-push.
According to above-mentioned aspect of the present invention, with the integrally formed stopper portions of lock body part slipper against release-push when locking.Therefore can prevent from when not pushing release-push, to remove this lock-out state (releasing of this lock-out state be since during locking shake (for example unstable) of locking piece cause), so security improves greatly.
And, stopper portions and whole formation of lock body part that is made of metal.Therefore, the intensity of stopper portions can strengthen, and the unfailing performance of the block effect of stopper portions strengthens greatly.Therefore, the security of buckle of safety belt of seat increases.
A tenth aspect of the present invention is the buckle of safety belt of seat according to the 8th or the 9th aspect, wherein: the locking slipper of locking piece counterweight part respectively comprises a slidingsurface, the direction that this slidingsurface inserts and shifts out with hyoplastron on snap close swinging end part is slided, and each slidingsurface forms circular arc.
According to above-mentioned aspect of the present invention, the pair of locking slipper that slides on two transverse end of snap close swinging end respectively has the slidingsurface of a formation circular arc.Therefore, the contact area of slidingsurface reduces, and the slip loss reduces.Therefore, make hyoplastron insert this insertion passage so that the power of locking swinging end swing and the pressing force (being release force) of release-push can reduce.
A eleventh aspect of the present invention is according to any one buckle of safety belt of seat in first to the tenth aspect, wherein: this locking piece is included in the patchhole of lock operating end portion, release-push comprises the insertion projection, when pushing release-push, this insertion projection is inserted inserting in the hole of lock operating end portion, simultaneously, this inserts the protrusions press lock operating end portion, so that make locking swinging end portion be rocked to the locking off-position, make locking swinging end portion edge and its side's rising gradually in the opposite direction simultaneously towards snap close swinging end part pressurized.
According to above-mentioned aspect of the present invention, when pushing release-push, the insertion projection of release-push is inserted inserting in the hole of locking piece gradually owing to insert the inclined surface of projection, locking piece along with towards the rising gradually in the opposite direction of the side of pushing of snap close swinging end.This pressing force reduces, and the locking swinging end of locking piece is to the swing of locking off-position then.Therefore, the pressing force of release-push, promptly release force can further reduce.
A twelveth aspect of the present invention be according to first to the tenth on the one hand in any one buckle of safety belt of seat, wherein: the slipper of release-push is in the corresponding end of a pair of arm, so that hold it in from the outside in the sidewall of pedestal, guide channel is formed in each slipper by this way, i.e. the edge of opening of the elongated hole in each sidewall of pedestal this guide channel of packing into slidably.
According to above-mentioned aspect of the present invention, this of release-push is to the horizontal formation of arm along release-push, so that hold it in from the outside in the pair of sidewalls of pedestal, slipper at the respective end place of arm slides in the elongated hole of pedestal sidewall, therefore, when pushing release-push, the slide of this slipper can carry out at the transversely stable of release-push, and can carry out glossily.
And the slipper of the release-push in the elongated hole of the pedestal of packing into slidably respectively has a guide channel, and the edge of opening of elongated hole cooperates with this guide channel slidably.Therefore, the edge of opening of elongated hole is supported by a pair of relative wall of this guide channel slidably.Therefore, can prevent that slipper from shifting out from elongated hole.
A thirteenth aspect of the present invention is that wherein: this release-push is made by synthetic resin fully according to any one buckle of safety belt of seat in the first to the 12 aspect.
According to above-mentioned aspect of the present invention, integral body lightens release-push by being made by synthetic resin.Therefore, when the so-called G that falls back takes place, compare, can reduce significantly to push the inertia force of directive effect on release-push with the inertia force on the locking swinging end that acts on locking piece with locking direction.Therefore when taking place, the so-called G of falling back to prevent that hyoplastron from deviating from from this buckle of safety belt.And security performance improves.
A fourteenth aspect of the present invention is a kind of buckle of safety belt of seat, comprising:
One pedestal, this pedestal comprises:
One inserts passage, has the hyoplastron of engaging hole to insert this insertion passage or shifts out from this insertion passage; And
A pair of upright side walls, each sidewall is arranged in the respective side of this insertion passage;
One snap close, this snap close is bearing on the pedestal sidewall swingably, and swings between with upper/lower positions:
Locked position, in this position, when hyoplastron was inserted into the locked position that inserts passage, latch engagement was inserted the engaging hole of hyoplastron, so that hyoplastron is pinned, and
Pin the off-position, in this position, locking-in state is removed;
One locking piece, this locking piece comprises:
One locking swinging end portion, this locking swinging end portion is swung between with upper/lower positions:
Latched position is in this position, when locking-in state, locking swinging end portion pins snap close with such state, and promptly under this state, snap close is pressed towards the engaging hole of hyoplastron, therefore snap close swinging end part locks this locking-in state along the direction pressurized of hyoplastron insertion simultaneously, and
The locking off-position, in this position, lock-out state is removed;
One locking slipper, it is swung with the locking swinging end, and slides on snap close in swing process;
One lock operating end portion, by this lock operating end portion, in when locking, when lock operating end portion during along direction pressurized that hyoplastron inserts, locking swinging end portion swings to the locking off-position, thereby removes this lock-out state; And
One counterweight part, by this counterweight part, the center of gravity of locking piece is partial to the locking swinging end portion side;
One latch spring, when locking, the direction elasticity that this latch spring inserts with hyoplastron is substantially oppressed the locking swinging end portion of locking piece, so that keep this lock-out state;
One release-push, this release-push comprises: a button, the direction that this button inserts with hyoplastron pressure-locks the lock operating end portion of part, makes locking swinging end portion swing with the direction that hyoplastron shifts out, thereby unlocks state; And
One pusher, when when pushing release-push and unlock state, this pusher is pressed to snap close and is pinned the off-position, thereby removes locking-in state and hyoplastron is shifted out from the insertion passage of pedestal.
Brief description of drawings
Fig. 1 is the decomposition diagram of the buckle of safety belt of seat of first embodiment of the invention.
Fig. 2 is the perspective view of pedestal shown in Figure 1.
Fig. 3 is the plane of pedestal shown in Figure 1.
Fig. 4 is the side view of pedestal shown in Figure 1.
Fig. 5 is the front view of snap close shown in Figure 1.
Fig. 6 is the plane of snap close shown in Figure 1.
Fig. 7 is the side view of snap close shown in Figure 1.
Fig. 8 is the front view of locking piece shown in Figure 1.
Fig. 9 is the side view of locking piece shown in Figure 1.
Figure 10 is the front view of block shown in Figure 1.
Figure 11 is the plane of block shown in Figure 1.
Figure 12 is the side view of block shown in Figure 1.
Figure 13 A is the left view of latch spring shown in Figure 1; Figure 13 B is the front view of latch spring;
Figure 13 C is the right view of latch spring.
Figure 14 is the side view of release-push shown in Figure 1.
Figure 15 is the plane of release-push shown in Figure 1.
Figure 16 schematically illustrates the sectional side view that hyoplastron inserts the insertion opening state before of buckle of safety belt of seat shown in Figure 1.
Figure 17 schematically illustrates the sectional side view that buckle of safety belt of seat shown in Figure 1 is in the lock state.
Figure 18 is the sectional side view that schematically illustrates by the release-push of pushing buckle of safety belt of seat shown in Figure 1 the state when lock-out state removed.
Figure 19 is the decomposition diagram of second embodiment of the invention.
Figure 20 is the decomposition diagram of second locking piece shown in Figure 19.
Figure 21 is the front view of the main body of second locking piece shown in Figure 20.
Figure 22 is the side view of lock body shown in Figure 21.
Figure 23 is the plane of the counterweight part of second locking piece shown in Figure 20.
Figure 24 is the front view of locking piece counterweight part shown in Figure 23.
Figure 25 is the side view of locking piece counterweight part shown in Figure 23.
Describe below with reference to Fig. 1 to 18 pair of embodiments of the invention.Should be known in that the identical or equivalent parts in the accompanying drawing are represented by identical reference number.
Fig. 1 is the decomposition diagram of general structure of the buckle of safety belt of seat 1 of expression one embodiment of the invention.Fig. 2 is the perspective view of the pedestal of buckle of safety belt of seat, and Fig. 3 and 4 is respectively the plane and the side view of this pedestal.Buckle of safety belt of seat 1 comprises pedestal 2, and this pedestal 2 is by forming the shape of cross section of basic U-shaped to the metal plate press forming.
Shown in Fig. 1 to 4, pedestal 2 comprises: bottom 2a, and this bottom 2a forms plate shaped; And pair of sidewalls 2b and 2c, this oppose side wall 2b and 2c stand vertically substantially by the two ends that makes this bottom 2a width and form, and form an integral body with this bottom 2a.In the front (left hand that is Fig. 1 is distolateral) of bottom 2a, be formed with the otch of predetermined length at the front end downside along continuous straight runs of each sidewall 2b and 2c from its front end, thereby form cutting part.Each cutting part meets at right angles inwardly curved substantially, to form a pair of tongue-shaped member 3a and 3b.The inner surface of gap between this tongue-shaped member 3a and the 3b and bottom 2a forms opening 5a, and the insertion end part 4a of hyoplastron 4 inserts this opening 5a along the inner bottom surface of bottom 2a, and is formed with the insertion passage 5b in opening 5a inside.This hyoplastron 4 comprises the engaging hole 4b that passes this insertion end part 4a along thickness direction, and it also is included in the rectangle patchhole 4c of the office of widening, the other end, passes this patchhole 4c as the belt (not shown) of seat harness with relaxed state and inserts.
Slip guide hole 7 is formed at the core of the bottom 2a of pedestal 2, so that pass this pedestal along the thickness direction of pedestal 2.The structure of this slip guide hole 7 is like this, that is, hereinafter with the pusher 6 of the ejecting mechanism introduced slidably, so that can freely move back and forth along the direction that hyoplastron 4 inserts, this direction is represented by the arrow among Fig. 1.Lateral middle in the rear end of slip guide hole 7 (being right hand end among Fig. 1) is formed with a small embossment 7a, so that protrude towards the inboard of slip guide hole.One end of coil form pusher spring 8 is adorned outward and is fixed on this small embossment 7a, and this pusher spring 8 continues to promote this pusher 6 towards the left side of Fig. 1.And engaging hole 9 is formed at the front end (being the left hand end of Fig. 1) of slip guide hole 7, and is integral with coaxial with this slip guide hole.Engaging hole 9 forms rectangular through-hole, and its lateral dimension is less times greater than the lateral dimension of slip guide hole 7.
Pusher 6 is formed by molded or the complete integral body of similar fashion by synthetic resin.The front end of this pusher 6 forms the spill arcuate surfaces, and this spill arcuate surfaces conforms to the convex arcuate surfaces of the insertion end part 4a of hyoplastron 4.The spill arcuate surfaces of pusher 6 is oppressed along hyoplastron 4 direction of insertion by hyoplastron 4, and slides on the 2a of bottom along slip guide hole 7.And, also have the tongue-shaped member 6a that stretches to the front with whole formation of fore-end of pusher 6.When locking and latch-release, the upper surface of the engaging hole 9 of the lower surface of the snap close swinging end 17i of this tongue-shaped member 6a by slipping into snap close 17 and closed base 2, this snap close will be introduced in the back.
There is installing hole 10 rear end at the bottom of pedestal 2 2a, and this installing hole 10 for example forms manhole.The towing plate 11 (shown in Figure 16 to 18) that is formed by metal plate or analog is fixed on the installing hole 10 by rivet or analog.Because transient force, for example because the explosive force of (for example when collision) gunpowder when needing, towing plate 11 immediately by the tractor (not shown) backward (promptly towards Fig. 1 right side) draw, therefore, the belt (not shown) that passes the patchhole 4c of hyoplastron 4 is pulled and is tightened up owing to having eliminated the slackness in the belt.
A pair of circular support holes 12a and 12b be respectively in the medium height position of the front side of this oppose side wall 2b and 2c, so as along pedestal 2 laterally toward each other.This support holes 12a and 12b are like this, promptly as a pair of ledge portion 13b that waves (swing) central shaft of locking piece 13 with 13c inserts swingably and by this support holes supporting, this locking piece 13 will be introduced hereinafter.
Be communicated with aforementioned support holes 12a and 12b respectively and a pair of lead-ingroove 14a of all-in-one-piece and 14b are formed at respectively on sidewall 2b and the 2c, so that each other laterally relatively.This lead-ingroove 14a and 14b respectively basically form L shaped, and wherein, the lateral dimension of this lead-ingroove is slightly less than the diameter of each support holes 12a, 12b, and less times greater than the thickness of slab of locking piece 13.The L shaped upper end of each lead-ingroove 14a, 14b forms opening 14c, the 14d of sidewall 2b, 2c upper end among Fig. 1.The ledge portion 13b of locking piece 13 and 13c can be introduced into support holes 12a and 12b by lead-ingroove 14a, 14b respectively.
Along a pair of chute 15a of the longitudinal extension of pedestal 2 and the longitudinal middle part that 15b is formed at this oppose side wall 2b and 2c respectively, so as along pedestal laterally toward each other.The pair of slide portions 16a of release-push 16 and 16b pack into respectively among chute 15a and the 15b slidably, and this release-push 16 will be introduced hereinafter.
And, see that from the side square hole 18a in a rectangular shape substantially and 18b are formed at rear side intermediate altitude (section) part of this oppose side wall 2b and the 2c of pedestal 2 respectively, and become pack into this square hole and can be of such form, a pair of ledge portion 17b of the snap close 17 that promptly is made of metal and 17c (hereinafter will introduce) around the swing of its central shaft.The respective surfaces of square hole 18a and 18b, promptly a respective surfaces on Fig. 1 and 4 right sides forms opening 18c and 18d, and the aforementioned ledge portion 17a of snap close 17 and 17b insert from this opening 18c and 18d.And the hole that the sidewall 2b of pedestal 2 and 2c comprise a plurality of different shapes is so that alleviate the weight of pedestal 2.
Fig. 5,6 and 7 is respectively front view, plane and the side view of snap close 17.As shown in the figure, snap close 17 comprises: rectangular body 17a, and the lateral dimension of this rectangular body 17a is less times greater than the lateral dimension of pedestal 2; A pair of ledge portion 17b and 17c, this forms one to two transverse end of ledge portion 17b and 17c and main body 17a, and insert pedestal 2 swingably this among square hole 18a and the 18b; The left side of Fig. 6 and 7 (promptly towards) protrudes from the horizontal mid portion of main body 17a lower end (Fig. 5) along a direction for one L shaped substantially hook portion 17d, this hook portion 17d; Pair of posts part 17e and 17f, this protrudes (Fig. 5) in the both sides of hook portion 17d from the lower ends downward of main body 17a to leg portion 17e and 17f; And pair of slide portions 17g and 17h, when being seen by plan view, each is in a rectangular shape to slipper 17g and 17h for this, and outwards protrudes in the both sides of hook portion 17d, as shown in Figure 6.The whole formation of these componentries also links together.
When the direction of inserting along hyoplastron in the rear end of pusher 6 (being the right-hand end of Fig. 1) was pushed snap close 17, this of snap close 17 played the effect of block to leg portion 17e and 17f, and this hyoplastron direction of insertion is represented by arrow among Fig. 1.
Fig. 8 and 9 is respectively the front view and the side view of locking piece 13.This locking piece 13 passes through press forming and whole formation by metal plate or analog.Just, this locking piece 13 comprises: rectangular body 13a, and the lateral dimension of this rectangular body 13a is longer than vertical size, and longer slightly than the lateral dimension of pedestal 2; A pair of ledge portion 13b and 13c, these two transverse end to ledge portion 13b and 13c and main body 13a form one, and insert swingably among a pair of circular support holes 12a and 12b of pedestal 2; Rectangle locking action end 13d, the lateral dimension of this rectangle locking action end 13d is longer than vertical size, and its horizontal mid portion on main body 13a protrudes along the direction that makes progress Fig. 8; One counterweight part 13e, this counterweight part 13e becomes rectangle substantially, and protrudes along direction downward Fig. 8 from the horizontal mid portion of main body 13a lower end; And pair of locking swinging end 13f and 13g, this protrudes (Fig. 8) to locking swinging end 13f and 13g downwards from the transverse sides part of counterweight part 13e.
As shown in Figure 8, the locking action end 13d of locking piece 13 is included in the rectangle patchhole 13h at its core place, the lateral dimension of this rectangle patchhole 13h is longer than vertical size, the upper opening portion edge (among Fig. 8) of patchhole 13h forms wedge-shaped surface 13i, the side expansion that this wedge-shaped surface 13i inserts towards hyoplastron 14 (left side in Fig. 9 just).And locking action end 13d is crooked, so that (left side among Fig. 9) tilts at a predetermined angle towards the place ahead to (swing) central shaft Oa that waves of ledge portion 13b and 13c with respect to this, and a side of inserting towards hyoplastron 4 just.
As shown in Figure 9, when seeing from the side, this of locking piece 13 respectively basically forms trapezoidal to locking swinging end 13f and 13g, and (among Fig. 9) reduces this trapezoidal lateral dimension towards the top gradually.This trapezoidal bottom surface forms arcuate surface 13j, the 13k of downward protrusion, and this trapezoidal rear surface (being the right lateral surface among Fig. 9) forms spill arcuate surfaces 13l, 13m.The arcuate surface 13j of locking swinging end 13f and 13g and 13k can slide on the plane surface of the pair of slide portions 17g of snap close 17 shown in Figure 6 and 17h respectively.And, when latch-release, the slipper 17g of snap close 17 and the respective front ends of 17h are slided on the spill arcuate surfaces 131 of locking swinging end 13f and 13g and 13m and contacts with them, thereby guiding is swung around (swing) central shaft that waves of latch engagement end 17i.
Figure 10 is the front view of the block 19 made by synthetic resin, and this block is installed by the front surface that is contained in locking piece 13, just is contained on the surface of position 5a side locking piece 13, insert passage 5b at hyoplastron.Figure 11 and 12 is respectively the plane and the side view of block 19.This block 19 is by the molded and whole formation of synthetic resin or analog.That is, the structure of this block 19 is like this, promptly comprises: a rectangular body 19a, and the lateral dimension of this rectangular body 19a is longer than vertical size; A pair of arm 19b and 19c, when seeing from the side, this is to each basic triangularity shape of arm, and this protrudes from two transverse end on main body 19a top respectively backward to arm; And a pair of support column 19d and 19e, when seeing from the side, this respectively becomes hook-type to support column, and this protrudes from two transverse end of main body 19a bottom backward to support column; And these parts all form by synthetic resin is whole.The spring that forms the pair of lower opening in the lower end of main body 19a is installed groove 19f and 19g.
As shown in figure 12, stopper portions 19h that outwards (backward) in the arc-shaped substantially protrudes when seeing from the side and 19i form one with the arm 19b and the 19c of block 19 in the rear end of arm respectively.A pair of supporting convex 19j and 19k form one with stopper portions 19h and 19i respectively, this convexes to form in the inboard of stopper portions 19h and 19i, and protrude downwards at the rear side place, upper end of the both lateral sides of lock body 13a, so that on the thickness direction of plate, block locking piece 13.
Figure 13 A is the left side view of latch spring 20.Figure 13 B and 13C are respectively the front view and the right side views of latch spring 20.Latch spring 20 is the coil springs with predetermined diameter.One end of this latch spring 20 forms circle, and as shown in FIG. 13A, the other end forms rectangle, as shown in figure 13.This latch spring 20 is installed in the block 19 by this way, and promptly the transverse ends of the rectangular end 20b of this spring is contained in respectively in the spring installation groove 19f and 19g of block 19.
In other words, latch spring 20 can be installed in the locking piece 13 by this way simple and reliablely, be that block 19 cooperates the front surface that is installed in locking piece 13, the rectangular end 20b of latch spring 20 meshes in the spring installation groove 19f and 19g of the block 19 of packing into from the opening of lower surface.Locking piece 13, block 19 and latch spring 20 assembled in advance are together to form a module (prefabricated) parts.
Figure 14 and 15 is side view and planes of release-push 16.This release-push 16 is complete whole formation by the molded of synthetic resin or analog.Just, this release-push 16 comprises: the main body 16c of have a basically C form; A pair of arm 16f and 16g, this protrudes predetermined length backward and forms from the opposing sidewalls 16d of main body 16c and 16e arm 16f and 16g, so that be clamped in wherein from the outside with the sidewall 2b and the 2c of pedestal 2; Pair of slide portions 16a and 16b, this to slipper 16a and 16b along arm 16f and 16g direction respect to one another in each protruding end of arm 16f and 16g to projecting inward; A junction divides 16h, is used for connecting along sidewall direction respect to one another each far-end of sidewall 16d and 16e; One inserts protruding 16i, and this insertion projection is protruded backward in vertical pars intermedia office of coupling part 16h; One spring fixed lobe 16j, this spring fixed lobe 16j protrudes in the basic central part office of the inner surface of main body 16c and fixes this latch spring 20 by the round nose 20a and its external engagement that make latch spring 20; And one circular arc insert leader 16k, this inserts leader in that the inner surface from main body 16c protrudes a shade below the position of spring fixed lobe 16j.These parts form by synthetic resin is whole.Insert leader 16k and be arranged to like this, it is facing to the inner surface of the bottom 2a of pedestal 2, so that form the upper surface of the opening 5a that inserts passage.This insertion leader 16k inserts the direction guiding of the opening 5a of this insertion passage along the insertion end part 4a of hyoplastron 4.
Above-mentioned insertion projection 16i comprises: vertical wall 16l, this vertical wall 16l when latch-release against the locking action end 13d of locking piece 13, and the direction compressing locking piece 13 that inserts along hyoplastron; And an inclined surface 16m, this inclined surface 16m tilts with descending grade towards the rear side (being the right side among Figure 14) of vertical wall 16l.The whole formation of this vertical wall 16l and inclined surface 16m also links together.
Aforementioned pair of slide portions 16a and 16b respectively form prismatic, and its size can allow this slipper to enter among the sliding tray 15a of this oppose side wall 2b of pedestal 2 and 2c and the 15b and can come out from this sliding tray 15a and 15b.Guide channel is formed at the side (for example downside) of each sliding tray 15a and 15b by this way, promptly this guide channel cooperate with the bottom of the opening of each sliding tray 15a and 15b and the play (play) between them very little.Therefore, this guide channel prevents that slipper 16a and 16b from coming out from sliding tray 15a and 15b behind pack into sliding tray 15a and 15b, and the motion that reciprocatingly slides of guiding release-push 16.
Function below with reference to Figure 16 to 18 explanation buckle of safety belt of seat 1.
Figure 16 is the sectional side elevation of the state before the opening 5a of the insertion end part 4a that the is illustrated in hyoplastron 4 insertion passage that inserts buckle of safety belt of seat 1.Among Figure 16, reference number 21 expression is installed in the lower house on the latter half of pedestal 2.This lower house 21 and the upper shell 22 that is installed on the first half of pedestal 2 form body shell.Form the insertion opening 23 that is communicated with the opening 5a of hyoplastron insertion passage 5b at this body shell front surface place.Before the insertion end part 4a of hyoplastron 4 inserts opening 23, because the spring force of pusher spring 8, pusher 6 moves forward to slip guide hole 7 places of base bottom 2a and further moves to the front end of engaging hole 9 again, so that sealing slip guide hole 7 and engaging hole 9.And pusher 6 slips into the end downside of the latch engagement end 17i of snap close 17, so that the termination of snap close swinging end 17i is elevated on the upper surface of pusher 6.
At this moment, this of snap close swinging end 17i slides on to the arc rear surface of respective concave of locking swinging end 13f and 13g and contacts with the arc rear surface of this spill at this of locking piece 13 respective front ends of slipper 17g and 17h, and the spring force of latch spring 20 acts on the front surface of locking swinging end 13f and 13g, the direction that this spring force inserts along hyoplastron and (promptly along the directive effect of downside in Figure 16, along the direction of oppressing pusher 6 from top to bottom), thus prevent that locking piece 13 from shaking.That is, at this moment locking piece is in stationary state substantially.
Then, as shown in figure 17, as the insertion end part 4a of hyoplastron 4 insertion opening 23 and the opening 5a when inserting this insertion passage 5b by buckle of safety belt 1, the convex arcuate end of the insertion end part 4a of hyoplastron 4 cooperates with the spill arcuate front face of pusher 6.Then, when hyoplastron 4 further inwardly pushed away, pusher 6 slided toward swivel motion and on the 2a of the bottom of pedestal 2 against the spring force of pusher spring 8.When the rear end of pusher 6 (being the right-hand end of Figure 17) against and when pushing down as the pair of posts part 17e of snap close 17 blocks and 17f, the motion backward of pusher 6 stops, and the further insertion of restriction hyoplastron 4.
When oppressing this to leg portion 17e and 17f backward with pusher 6 when carrying out aforesaid operations, the snap close swinging end 17i of snap close 17 is counterclockwise around this oscillation center axle rotation to lug oblique crank Z 17b and 17c.
At this moment, the upper surface of the engaging hole 9 of pedestal 2 is opened owing to the past swivel motion of pusher 6, and the engaging hole 4b of hyoplastron 4 also opens equally with the engaging hole 9 of pedestal 2.Therefore, the snap close swinging end 17i of above-mentioned rotation inserts in the hole 7 and 9 of this overlapping.Therefore, this hyoplastron 4 is locked on the pedestal 2.
At this moment, also counterclockwise rotated by the pair of locking swinging end 13f and the 13g of latch spring 20 around ledge portion 13b and 13c along the locking piece 13 of the direction extruding of hyoplastron insertion.Therefore, each circular arc lower surface of locking swinging end 13f and 13g backward direction in plane surface upper edge Figure 17 of the pair of slide portions 17g of snap close 17 and 17h is slided.Therefore, the latter half of the rectangular end of latch spring 20 is against the outer surface (outer surface of the sweep of snap close sliding end 17i) of the hook end of snap close sliding end 17i, and press snap close 17 along the direction that hyoplastron inserts, also snap close is pressed towards the direction of the engaging hole 9 of pedestal 2 in the edge, thereby keeps locking-in state.
And, at this locking-in state, the locking swinging end 13f of locking piece 13 and 13g vertically make with the state that turns forward with respect to ledge portion 13b and 13c substantially on the pair of slide portions 17g of snap close 17 and 17h, and this ledge portion 13b and 13c play the effect of oscillation center axle. Locking swinging end 13f and 13g are positioned at locking swinging end 13f, and the latch spring 20 of 13g front side is pressed backward, and therefore, this locking-in state is by secure lock.
And at this lock-out state, a pair of stopper portions 19h of block 19 and the respective end of 19i are against the corresponding upper end of the pair of slide portions 16a and the 16b of release-push 16.Therefore, can prevent the swing of locking piece 13 when not pushing release-push 16, also prevent shaking of locking piece 13 simultaneously.
As shown in figure 18, in order to remove this lock-out state, when the direction of inserting along hyoplastron against the spring force of latch spring 20 was pushed release-push 16, the pair of slide portions 16a of release-push 16 and 16b slided in the guide channel 15a of pedestal 2 and 15b, and move along the direction that hyoplastron inserts.Therefore, slipper 16a and 16b separate with 19i with a pair of stopper portions 19h of block 19 in being installed in locking piece 13, and the block of locking piece 13 separates.
When pushing release-push 16, the insertion of release-push 16 projection 16i inserts the patchhole 13h of lock operation end 13d.Therefore, the inclined surface 16m that inserts protruding 16i is at first against the wedge-shaped surface 13h of patchhole 13.
Therefore, be accompanied by the protruding 16i of insertion and insert this patchhole 13h, whole locking piece 13 (being pair of locking swinging end 13f and 13g) raises towards the upside of Figure 18, promptly along pressing the pair of slide portions 17g of snap closes 17 and the side of 17h in the opposite direction to raise to locking swinging end 13f and 13g towards the engaging hole 9 of pedestal 2 with this, so pressing force reduces.
Then, when the protruding 16i of insertion further inserted, the vertical wall 161 that inserts protruding 16i was against lock operation end 13d.When this lock operation end 13d further moves backward and surpass the oscillation center axle of the ledge portion 13b of locking piece 13 and 13c, this to locking swinging end 13f and 13g according to the pendulum principle and towards the front side (left side in Figure 18) around ledge portion 13b and 13c reverse rotation (clockwise direction rotation).
Therefore, this circular arc lower surface 13j to locking swinging end 13f and 13g separates with 17h to front slide and with the pair of slide portions 17g of snap close 17 with 13k.Therefore, this snap close swinging end 17i becomes free.Therefore, continue in hyoplastron inserts passage 5b, to push open the insertion end part 4a of hyoplastron 4 along the direction opposite (promptly towards the front side (Figure 18 left side)) with the hyoplastron direction of insertion towards the pusher 6 of front side (towards the left side of Figure 18) compressing by pusher spring 8.Therefore, the rear surface of snap close swinging end 17i termination is open from the front end of the engaging hole 4b of hyoplastron 4, and also the tongue 6a along the direction that makes progress among Figure 18 from pusher is open.As a result, locking-in state is removed.And at this moment because the spring force of the pusher spring 8 of pusher 6, hyoplastron 4 is effectively released the outside from insert passage 5b.
On the other hand, in lock-out state process shown in Figure 17, owing to transient force for example the blast pressure of gunpowder make buckle of safety belt 1 by the tractor (not shown) under the situation of the instantaneous pulling towing plate 11 in the right side of Figure 17, when the lax of the belt in the patchhole 4c that inserts hyoplastron 4 because pulling towing plate and instantaneous substantially with regard to elimination and belt thereby when being tightened up, this pull operation stops fast, and the so-called G of falling back takes place.At this moment, because this buckle of safety belt 1 can prevent such problem, promptly do not push release-push 16 hyoplastron 4 is got loose.
In other words, because this buckle of safety belt 1, the locking swinging end 13f of locking piece 13 and 13g locking snap close swinging end 17i, this snap close swinging end 17i is by pressing this hyoplastron and also pressing this hyoplastron to pin hyoplastron 4 towards the engaging hole 9 of pedestal 2 along hyoplastron direction of insertion (from the front side) (i.e. left side from Figure 17) towards rear side (being the right side among Figure 17).Therefore, because when stopping inertia force that the instantaneous pulling to pedestal 2 causes fast, this inertia force side direction rear side (along the hyoplastron direction of insertion) (promptly locking the direction that swinging end 13f and 13g press snap close swinging end 17i) in the past acts on and locks on swinging end 13f and the 13g when producing.Therefore, this lock-out state is strengthened greatly.
And, the center of gravity of locking piece 13 more close locking swinging end 13f and 13g, rather than locking action end 13d, in the quality of locking swinging end 13f and that side of 13g owing to counterweight part 13e becomes heavier.Therefore, the inertia force that acts on locking swinging end 13f and the 13g with locking direction compares so that the inertia force of the directive effect of latch-release on release-push 16 is bigger.Therefore, snap close 17 can further firmly keep by the state of locking piece 13 lockings, therefore, can reliably prevent get loose (disengagement) of hyoplastron 4, thereby can improve security greatly.
And, be used to lock the locking swinging end 13f of locking piece 13 of locking-in state of snap close 17 and 13g by latch spring 20 so that the direction that lock-out state is strengthened compressing, the direction of inserting with hyoplastron just, therefore, not with the spring part of the direction compressing snap close 17 opposite (this and ordinary construction similar) with the hyoplastron direction of insertion.Therefore, do not need to press release-push 16 to remove the lock-out state of snap close by the direction that against is inserted with hyoplastron.Therefore, the pressing force of release-push can reduce, and promptly release force can reduce, and has further improved security simultaneously.
The a pair of ledge portion 13b of locking piece 13 and 13c can simply insert support holes 12a and 12b by this way, and promptly ledge portion 13b and 13c put into the openend 14c of a pair of lead-ingroove 14a of the sidewall 2b of pedestal 2 and 2c and 14b and 14d and insert support holes 12a and 12b along lead-ingroove 14a and 14b.Just, can improve assembling workability when locking piece 13 is packed pedestal 2 into.
And, because locking piece 13 forms by the press forming of metal plate fully, compare with the situation that locking piece is made by for example sintering metal, both improved the simplicity of producing, reduced cost again.
And the locking swinging end 13f and the 13g that slide on the pair of slide portions 17g of the snap close swinging end 17i of snap close 17 and 17h form at two positions respectively, promptly form at two transverse end places of locking piece 13.Therefore, compare with the situation of sliding at a place, can stablize when the slide that locking swinging end 13f and 13g are being positioned at when sliding on the pair of slide portions 17g at two transverse end places of snap close swinging end 17i and the 17h, snap close 17 also can be stablized by the state of locking piece 13 lockings.Therefore can improve security.
Locking swinging end 13f and the 13g that slides on the slipper 17g of snap close swinging end 17i and 17h has circular arc bottom slidingsurface 13j and 13k respectively.Therefore, each contact area of slidingsurface reduces, and the slip loss reduces.Therefore, make hyoplastron 4 insert this insertion passage 5b so that the insertion force of permission locking swinging end 13f and 13g swing can reduce with the power (being release force) of pushing release-push 16.
In the dispose procedure of snap close 17, the slipper 17g of snap close swinging end 17i and the respective front ends of 17h be against corresponding surface, the corresponding rear surface of the locking swinging end 13f of locking piece 13 and 13g for example, and around the oscillation center axle rotation of snap close swinging end 17i.The slidingsurface of locking swinging end 13f and 13g forms spill arcuate surfaces 13l and 13m respectively, therefore, the slipper 17g of snap close swinging end 17i and the front end of 17h can promptly be convenient to and spill arcuate surfaces 13l and 13m sliding-contact around the smooth by this way rotation of its oscillation center axle.Therefore, the slip loss of snap close swinging end 17i reduces, the each several part of snap close slipper all the time with surface (the being the spill arcuate surfaces) sliding-contact of locking swinging end 13f and 13g.Therefore, can prevent shaking of snap close swinging end 17i, the snap close releasing operation can be stablized.
And, locking piece 13, block 19 and latch spring 20 be assembling by this way in advance, promptly the block of being made by synthetic resin 19 is installed in the locking piece 13, an end of latch spring and the installation groove 19f of block 19 and 19g engagement, and the pre-constructed unit that forms like this can be installed in the pedestal 2.Therefore, the number of the installation step of buckle of safety belt of seat 1 can reduce, and the pedestal assembling workability improves.
Block 19 is made by resilient synthetic resin, and therefore, it is can be by cooperation simple and reliable and be installed in apace in the metal locking spare 13.And, being inserted and secured on by latch spring 20 in the installation groove 19f and 19g of block 19, this latch spring 20 can simple and reliable and very accurately be installed in the predetermined installation site of locking piece 13.
And, in locking process, be installed in the stopper portions 19h of the block 19 in the locking piece 13 and 19i slipper 16a and 16b against release-push 16.Therefore, shaking of locking piece 13 removed this lock-out state in the time of can preventing under not by the situation of release-push 16 owing to locking.Therefore can improve security greatly.
When release-push 16 was pressed, the insertion of release-push 16 projection 16i inserted in the through hole of locking piece 13 gradually, and locking piece 13 raises with the side of pressing to snap close swinging end 17i side with it in the opposite direction gradually owing to insert the inclined surface 16m of protruding 16i.After this pressure reduced, locking piece 13 and locking swinging end 13f and 13g swung to the locking off-position, therefore, push the power of release-push 16, and promptly release force reduces greatly.
And, the a pair of arm 16f of release- push 16 and 16g are in the transversely formation of release-push 16, so that hold it in from the outside in the sidewall 2b and 2c of pedestal 2, and the slipper 16a and the 16b that are positioned at the respective end place of arm 16f and 16g slip into sliding tray 15a and 15b, and this sliding tray 15a and 15b form the elongated hole on the pedestal 2.Therefore, when pushing release-push 16, what the sliding motion of slipper 16a and 16b can be at release-push 16 is transversely stable, can also smoothly slide.
Guide channel is formed in each slipper 16a and 16b of release-push 16, and this slipper is packed among each sliding tray 15a and 15b of pedestal 2 slidably, and like this, the edge of opening of sliding tray 15a and 15b is packed into wherein slidably.Therefore, the edge of opening of sliding tray 15a (edge of opening of sliding tray 15b) is supported by a pair of subtend wall of guide channel slidably.Therefore, can prevent that slipper 16a and 16b from getting loose from sliding tray 15a and 15b.
And release-push 16 is by making basic hollow and weight reduction by synthetic resin fully.Therefore, when the so-called G that falls back takes place, can be significantly less than the inertia force on locking swinging end 13f that acts on locking piece 13 with locking direction and the 13g with the directive effect of pushing release-push at the inertia force on the release-push 16.Therefore, hyoplastron 4 gets loose (disengagement) from buckle of safety belt 1 in the time of can preventing under the situation of not pushing release-push 16 to take place the so-called G of falling back, and security also can improve.
Figure 19 is the decomposition diagram of the buckle of safety belt of seat 1A of second embodiment of the invention.Basic and the aforementioned buckle of safety belt of seat of the structure of this buckle of safety belt of seat 1A 1 is identical, difference just is transformed into the second locking piece A13 that is made of metal with the locking piece 13 (first locking piece 13 hereinafter referred to as) of the buckle of safety belt of seat 1 of first embodiment shown in Figure 1, this second locking piece will be represented in Figure 20 to 22, the various functions of the block 13 that the resin shown in Figure 10 to 12 is made are all finished by this second locking piece A13, and do not have block 13.The explanation that repeats will omit or simplify.
That is, as shown in figure 20, the second locking piece A13 forms like this, that is, the locking piece counterweight part C13 that is made of metal can install and removably go up and install by the front surface (being the surface in Figure 20 left side) that is contained in metal lock body part B13.
Shown in Figure 21 and 22, lock body part B13 by metal plate by press forming and to form with the mode that first locking piece 13 is identical shown in Fig. 8 and 9 is whole.That is, lock body part B13 comprises: a rectangular body B13a, and the lateral dimension of this rectangular body B13a is longer than vertical size, and its lateral dimension is longer than the lateral dimension of pedestal 2 a little; A pair of ledge portion B13b and B13c, the whole formation of these two transverse end to ledge portion B13b and B13c and main body B13a, and insert swingably among a pair of circular support holes 12a and 12b of pedestal 2; One rectangle lock operation end B13d, the lateral dimension of this rectangle lock operation end B13d is longer than vertical size, and the upside towards Figure 21 protrudes from the horizontal pars intermedia office of the upper end of main body B13a; One counterweight mounting portion B13e, this counterweight mounting portion B13e basically forms rectangle, and the downside towards Figure 21 protrudes downwards from the horizontal pars intermedia office of the lower end of main body B13a; Pair of locking swinging end B13f and B13g, this protrudes downwards from the two side portions (Figure 21) of counterweight mounting portion B13e locking swinging end B13f and B13g; And stopper portions B13o and B13p, this stopper portions B13o and B13p have with the block 19 shown in Figure 10 to 12 in a pair of hook-type stopper portions 19h and the essentially identical shape of 19i.The whole formation of these building blocks also links together.
Above-mentioned lock operation end B13d is included in a rectangle patchhole B13h of intermediate portion, and the lateral dimension of this rectangle patchhole B13h is longer than vertical size.One tapered surface B13i is formed in the upper opening portion edge (among Figure 21) of patchhole B13h by this way, that is, the opening of patchhole B13h is widened towards the side (being the left side among Figure 22) that hyoplastron 4 inserts.And, this lock operation end B13d bending, thus at a predetermined angle with respect to this to the oscillation center axle Boa of ledge portion B13b and B13c and in the front side (being the left side among Figure 22) tilt, just, it tilts to bend towards the side that hyoplastron 4 inserts at a predetermined angle.
Stopper portions B13o and B13p be formed at lock body part B13 main body B13a two transverse end and in this inboard to ledge portion B13b and B13c, and protrude and form from main body B13a.Protrude downwards in Figure 20 the corresponding hook-type termination of stopper portions, and when locking against the pair of slide portions 16a of the release-push shown in Figure 14 and 15 16 and the upper end face of 16b.Therefore, unless just can make slipper 16a by pushing release-push 16,16b moves, thereby could remove against the state of two stopper portions B13o and B13p, therefore can suppress the swing of lock body B13,, can prevent the releasing of lock-out state that is.
And lock body part B13 comprises the jaw shape part B13q of rectangle, and this jaw shape part B13q protrudes (left side among Figure 22) towards the side that locking piece counterweight part C13 is installed, and the lower end of this jaw shape part and counterweight mounting portion 13e forms one.When locking piece counterweight part C13 was installed, the bottom surface of this locking piece counterweight part was by jaw shape part B13q supporting, and the rectangular end of latch spring 20 is installed in the termination of jaw shape part B13q by external mounting.A pair of swinging end B13f that inwardly recessed pair of meshing concave portions B13r and B13s are formed at lock body part B13 respectively and the upper end (among Figure 21) of B13g.
Locking piece counterweight part C13 by metal plate by press forming so that can install and the lock body part B13 that removably packs in whole formation of mode, this dull and stereotyped thickness is less times greater than the thickness of the metal plate of lock body part B13.
In other words, shown in Figure 20,23,24 and 25, locking piece counterweight part C13 comprises: counterweight part C13a, and this counterweight part C13a forms the plate of basic rectangle; Pair of locking slipper C13b and C13c, this is to locking slipper C13b and C13c substantially with right-angle bending, so that protrude towards lock body part B13 at the place, two ends of counterweight part 13a; A pair of spring is installed groove C13d and C13e, and spring is installed groove C13d for this and C13e is formed at the lower end (among Figure 24) of counterweight part C13a, and the rectangular end 20b of latch spring 20 is installed therein and meshes with this rectangular end 20b; Bottom C13f, this bottom C13f forms a horizontal plane, and it connects this corresponding the inner to spring installation groove C13d and C13e in the horizontal direction, and this bottom C13f is positioned at and is fixed on the jaw shape part B13q of lock body part B13; One rectangle head C13g, the lateral dimension of this rectangle head C13g is longer than vertical size, and from the upper end face of counterweight part C1 3a upwards (Figure 24) protrude; And a pair of convex shoulder part C13h and C13i, this is to convex shoulder part C13h and the C13i both lateral sides (Figure 24) at head C13g.The whole formation of these parts also links together.
When locking piece counterweight part C13 is installed in lock body part B13 and goes up, this to locking slipper C13b and C13C from both sides to a pair of swinging end B13f of inner resilient clamp lock body part B13 and two outer surfaces of B13g.And, each rear surface (among Figure 24) of locking slipper C13b and C13c forms arcuate surface C13j and the C13k that outwards protrudes, and each posterior face (being on the surface of lock body part B13 one side among Figure 20) forms the spill arcuate surfaces C13l and the C13m that concave.This slides on the upper surface of the pair of slide portions 17g of as shown in Figure 6 snap close 17 and 17h to the arcuate surface C13j of locking slipper C13b and C13c lower end and C13k, and this of snap close 17 slides on the spill arcuate surfaces C13l of the rear side of locking slipper C13b and C13c and C13m respectively to each angled portion on the front surface of slipper 17g and 17h.
Therefore, as shown in figure 20, locking piece counterweight part C13 is installed on the lock body part B13 by this way, be that locking piece counterweight part C13 is pushed into from lock body part B13 front and with respect to a pair of ledge portion 13b of this lock body part B13 and 13c and mesh with downside, the swing of the locking of lock body part B13 just is distolateral, and it is at the predetermined installed position of lock body part B13 front surface.The upper end of the head C13g of locking piece counterweight part C13 is positioned at the position of the open lower end of the patchhole B13h that is lower than this lock body part B13, and the bottom C13f of locking piece counterweight part C13 is positioned at and is fixed on the jaw shape part B13q of lock body part B13.At this moment, the pair of slide portions C13b of locked the counterweight part C13 of each outer surface of a pair of swinging end B13f of lock body part B13 and B13g and C13c from the outside to the inside resilient clamp live.And, the lower surface at the two transverse end places of the main body B13a of lock body part B13 is against a pair of convex shoulder part C13h of locking piece counterweight part C13 and the upper surface of C13i, whole locking piece counterweight part C13 by two transverse end of the main body B13a of lock body part B13 and jaw shape part B13q from both sides with the vertical direction resilient clamp Figure 24.
In other words, locking piece counterweight part C13 and lock body part B13 are mutually in vertical direction and resilient clamp transversely.And the engagement of lock body part B13 and locking piece counterweight part C13 is packed into by the rectangular end 20b engagement that makes latch spring 20 and is kept among the jaw shape part B13q of lock body part B13.Therefore, the adhesion between lock body part B13 and the locking piece counterweight part C13 strengthens greatly.And locking piece counterweight part C13 is made by metal plate, and this dull and stereotyped thickness is greater than the thickness of lock body part B13, and therefore, the quality of locking piece counterweight part C13 is greater than the quality of the counterweight part 13e of aforementioned first locking piece 13.
Therefore, when the so-called G that falls back takes place, the second locking piece A13 in the quality of locking swinging end one side further greater than its quality in lock operation end B13d one side.Therefore, the inertia force that acts on the locking piece A13 with locking direction when locking further increases.Therefore, the security of buckle of safety belt of seat 1A improves more.And in the structure of the second locking piece A13, lock body part B13 and locking piece counterweight part C13 form respectively, therefore, and by just carrying out the production in enormous quantities of main part B13 and counterweight part C13 accurately by the metal plate press forming.And, lock body part B13, locking piece counterweight part C13 and latch spring 20 be assembling by this way in advance, be that locking piece counterweight part C13 is contained in the lock body part B13, the periphery of the jaw shape part B13q end of the lock body B13 that protrude on the right side during the rectangular end 20b of latch spring 20 is installed in from the left-hand face (Figure 22) of lock body B13 towards Figure 22 by external mounting comprises that the pre-constructed unit of these three parts can form a Prefabricated block (being building block).Therefore, the number of the installation step of buckle of safety belt of seat 1A reduces, and its assembling workability improves.
As previously mentioned, according to the present invention, the snap close swinging end of snap close that is used to pin hyoplastron is locked by direction (the side direction rear side in the past) pressurized of being pressed to engaging hole by the locking swinging end of locking piece and also inserting with hyoplastron simultaneously.Therefore, when the so-called G that falls back takes place, promptly when the instantaneous pulling owing to pedestal is stopped to produce inertia force fast, the direction that inertia force inserts with hyoplastron (side direction rear side in the past) acts on the locking swinging end, thereby just oppresses the direction that strengthens lock-out state with snap close swinging end locked swinging end when locking.Therefore, lock-out state is strengthened greatly.
And, the more close locking swinging end of the center of gravity of locking piece, rather than lock operation end, and because counterweight part becomes bigger in the quality that locks swinging end one side.Therefore, act on the inertia force of locking on the swinging end greater than the inertia force of directive effect on release-push with locking direction to unlock.Therefore, the lock-out state of snap close can keep more firmly, therefore can prevent reliably that hyoplastron from shifting out, and security improves greatly.
And, be used to lock the direction compressing that the locking swinging end of locking piece of the locking-in state of snap close is strengthened with lock-out state by the spring force of latch spring, the direction of inserting with hyoplastron just, and do not oppress the spring part of snap close in the opposite direction with the side that inserts with hyoplastron.Therefore, the releasing of the lock-out state of snap close does not need against to push release-push with the direction that hyoplastron inserts.Therefore, the pressing force of release-push, promptly release force can reduce, and security can also further strengthen.

Claims (14)

1. buckle of safety belt of seat comprises:
One pedestal, this pedestal comprises:
One inserts passage, has the hyoplastron of engaging hole to insert this insertion passage or shifts out from this insertion passage;
A pair of upright side walls, each sidewall is arranged in the respective side of this insertion passage; And
One engaging hole;
One snap close, this snap close comprises:
Snap close ledge portion, this snap close ledge portion are swingably by the supporting part supporting that forms on the pedestal sidewall; And
One snap close swinging end part, this snap close swinging end part is swung between with upper/lower positions:
Locked position, in this position, when hyoplastron was inserted into the locked position that inserts passage, the snap close swinging end partly meshed the engaging hole of insertion hyoplastron and the engaging hole of pedestal, so that hyoplastron is pinned with respect to pedestal, and
Pin the off-position, in this position, locking-in state is removed;
One locking piece, this locking piece comprises:
Ledge portion, this ledge portion are inserted in the support holes that forms on the pedestal sidewall swingably;
One locking swinging end portion, this locking swinging end portion is swung between with upper/lower positions:
Latched position, in this position, when locking-in state, locking swinging end portion pins snap close swinging end part with such state, promptly under this state, the snap close swinging end partly is pressed towards the engaging hole of hyoplastron and the engaging hole of pedestal, and snap close swinging end part is along the direction pressurized of hyoplastron insertion simultaneously, therefore lock this locking-in state, and
The locking off-position, in this position, lock-out state is removed;
One lock operating end portion, this lock operating end portion is with respect to the opposite side of ledge portion at locking swinging end portion, this ledge portion is inserted between this lock operating end portion and the locking swinging end portion, by this lock operating end portion, when locking, when lock operating end portion during along direction pressurized that hyoplastron inserts, locking swinging end portion swings to the locking off-position, thereby removes this lock-out state; And
One counterweight part, by this counterweight part, the center of gravity of locking piece is compared with ledge portion and more is partial to locking swinging end portion;
One latch spring, when locking, the direction elasticity that this latch spring inserts with hyoplastron is substantially oppressed the locking swinging end portion of locking piece, so that keep this lock-out state;
One release-push, this release-push comprises:
Slipper, this slipper is being installed in the elongated hole that is formed on the pedestal sidewall along the mode that the direction that hyoplastron inserts and shifts out is slided; And
One button, when pushing with the direction of hyoplastron insertion against the spring force of latch spring, the direction that this button inserts with hyoplastron pressure-locks the lock operating end portion of part, makes locking swinging end portion swing with the direction that hyoplastron shifts out, thereby unlocks state; And
One pusher, when this pusher is pressed to locked position by hyoplastron, this pusher guiding snap close swinging end partly inserts the engaging hole of hyoplastron and the engaging hole of pedestal, thereby can pin and lock, when when pushing release-push and unlock state, this pusher is partly pressed to the snap close swinging end and is pinned the off-position, thereby removes locking-in state and hyoplastron is shifted out from the insertion passage of pedestal.
2. buckle of safety belt of seat according to claim 1, wherein: the support holes that is formed on the pedestal sidewall is respectively done circular, the ledge portion of locking piece is inserted this support holes, and is formed with on each sidewall so that the lead-ingroove that is communicated with support holes, and in the outer end of sidewall opening is arranged.
3. buckle of safety belt of seat according to claim 1 and 2, wherein: locking piece is such formation, promptly ledge portion, locking swinging end portion, lock operating end portion and counterweight part are passed through press forming and whole formation by metal plate.
4. according to any one described buckle of safety belt of seat in the claim 1 to 3, wherein: the locking slipper of swinging with locking swinging end portion is formed at the place, two ends of the horizontal locking swinging end portion of locking piece respectively, and the slidingsurface that respectively locks slipper that the direction of inserting and shifting out with hyoplastron on the respective transversal end of snap close swinging end part is slided forms circular arc.
5. according to any one described buckle of safety belt of seat in the claim 1 to 4, wherein: the locking slipper of locking piece respectively comprises a slidingsurface, this slidingsurface slides against snap close swinging end part and on this snap close swinging end part when locking-in state is removed, and this slidingsurface forms the arcuate surface that concaves.
6. according to any one described buckle of safety belt of seat in the claim 1 to 5, wherein: locking piece is installed on the block, and this block is formed from a resin and has spring that groove part is installed, and an end of latch spring and the spring of block are installed the groove part engagement.
7. buckle of safety belt of seat according to claim 6, wherein: block comprises stopper portions, this stopper portions and block are whole to be formed, and under lock-out state against the slipper of release-push.
8. buckle of safety belt of seat according to claim 1 and 2, wherein: this locking piece comprises:
One lock body part, comprise ledge portion, locking swinging end portion, lock operating end portion and under lock-out state against the stopper portions of the slipper of release-push, these parts all by metal plate by press forming and whole formation; And
One locking piece counterweight part comprises counterweight part and the pair of locking slipper that is positioned at these counterweight part two transverse end places, and this counterweight part and locking slipper pass through press forming and whole formation by metal plate;
Wherein the locking piece counterweight part also comprises spring installation groove part, and an end of latch spring inserts this spring groove part is installed, and this locking piece counterweight part is installed on the lock body part can install with dismountable mode.
9. buckle of safety belt of seat according to claim 8, wherein: lock body partly comprises stopper portions, this stopper portions and lock body part is whole to be formed, and under lock-out state against the slipper of release-push.
10. according to Claim 8 or 9 described buckle of safety belt of seat, wherein: the locking slipper of locking piece counterweight part respectively comprises a slidingsurface, the direction that this slidingsurface inserts and shifts out with hyoplastron on snap close swinging end part is slided, and each slidingsurface forms circular arc.
11. according to any one described buckle of safety belt of seat in the claim 1 to 10, wherein: this locking piece is included in the patchhole of lock operating end portion, release-push comprises the insertion projection, when pushing release-push, this insertion projection is inserted inserting in the hole of lock operating end portion, simultaneously, this inserts the protrusions press lock operating end portion, so that make locking swinging end portion be rocked to the locking off-position, make locking swinging end portion simultaneously along raising gradually in the opposite direction towards the side of snap close swinging end part pressurized with it.
12. according to any one described buckle of safety belt of seat in the claim 1 to 11, wherein: the slipper of release-push is in the corresponding end of a pair of arm, so that hold it in from the outside in the sidewall of pedestal, guide channel is formed in each slipper by this way, i.e. the edge of opening of the elongated hole on each sidewall of pedestal this guide channel of packing into slidably.
13. according to any one described buckle of safety belt of seat in the claim 1 to 12, wherein: this release-push is made by synthetic resin fully.
14. a buckle of safety belt of seat comprises:
One pedestal, this pedestal comprises:
One inserts passage, has the hyoplastron of engaging hole to insert this insertion passage or shifts out from this insertion passage; And
A pair of upright side walls, each sidewall is arranged in the respective side of this insertion passage;
One snap close, this snap close is bearing on the pedestal sidewall swingably, and swings between with upper/lower positions:
Locked position, in this position, when hyoplastron was inserted into the locked position that inserts passage, latch engagement was inserted the engaging hole of hyoplastron, so that hyoplastron is pinned, and
Pin the off-position, in this position, locking-in state is removed;
One locking piece, this locking piece comprises:
One locking swinging end portion, this locking swinging end portion is swung between with upper/lower positions:
Latched position is in this position, when locking-in state, locking swinging end portion pins snap close with such state, and promptly under this state, snap close is pressed towards the engaging hole of hyoplastron, therefore snap close swinging end part locks this locking-in state along the direction pressurized of hyoplastron insertion simultaneously, and
The locking off-position, in this position, lock-out state is removed;
One locking slipper, it is swung with the locking swinging end, and slides on snap close in swing process;
One lock operating end portion, by this lock operating end portion, in when locking, when lock operating end portion during along direction pressurized that hyoplastron inserts, locking swinging end portion swings to the locking off-position, thereby removes this lock-out state; And
One counterweight part, by this counterweight part, the center of gravity of locking piece is partial to the locking swinging end portion side;
One latch spring, when locking, the direction elasticity that this latch spring inserts with hyoplastron is substantially oppressed the locking swinging end portion of locking piece, so that keep this lock-out state; One release-push, this release-push comprises: a button, the direction that this button inserts with hyoplastron pressure-locks the lock operating end portion of part, makes locking swinging end portion swing with the direction that hyoplastron shifts out, thereby unlocks state; And
One pusher, when when pushing release-push and unlock state, this pusher is pressed to snap close and is pinned the off-position, thereby removes locking-in state and hyoplastron is shifted out from the insertion passage of pedestal.
CNB011208627A 2001-06-08 2001-06-08 Buckle of safety belt of seat Expired - Lifetime CN1325002C (en)

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JP4609922B2 (en) * 2003-10-24 2011-01-12 タカタ株式会社 Buckle and seat belt device provided with the same
CN100418812C (en) * 2003-10-28 2008-09-17 奥托利夫开发有限公司 Buckle switch and buckle device
US20080222860A1 (en) * 2007-03-14 2008-09-18 Pontaoe John S Buckle assembly
EP3167743B1 (en) * 2010-03-02 2019-08-14 Autoliv Development AB Seatbelt buckle apparatus
DE202010013986U1 (en) * 2010-09-20 2012-01-10 Trw Vehicle Safety Systems Inc. Locking tongue for a safety belt
CN102525038B (en) * 2010-12-31 2015-09-02 比亚迪股份有限公司 A kind of bracelet of seat belt apparatus
CN104544773B (en) * 2013-10-29 2018-02-09 比亚迪股份有限公司 Buckle device
CN106825361B (en) * 2017-01-12 2019-01-18 昆山钰立电子科技股份有限公司 A kind of Boeing hasp preparation process
WO2020061188A1 (en) * 2018-09-18 2020-03-26 Indiana Mills & Manufacturing, Inc. Seat belt apparatus and buckle
CN110371302B (en) * 2019-07-15 2021-03-02 北京安达维尔航空设备有限公司 Umbrella bag strap system with one-key unlocking device
CN114571206B (en) * 2022-03-29 2024-10-11 南京中拓科技有限公司 Assembling device and assembling method for button balancing weight

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