CN104590064B - Automobile child safety seat ISOFIX system - Google Patents
Automobile child safety seat ISOFIX system Download PDFInfo
- Publication number
- CN104590064B CN104590064B CN201410812340.4A CN201410812340A CN104590064B CN 104590064 B CN104590064 B CN 104590064B CN 201410812340 A CN201410812340 A CN 201410812340A CN 104590064 B CN104590064 B CN 104590064B
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- China
- Prior art keywords
- latch
- release
- isofix
- button
- release portion
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
Abstract
The invention relates to an automobile child safety seat ISOFIX system, and belongs to the technical field of machines. The automobile child safety seat ISOFIX system comprises a limiting device, a releasing device, a linkage mechanism and an ISOFIX interface. The limiting device comprises a gear plate. The releasing device comprises a releasing part, a button, a locking block and a limiting part. The releasing part is installed in the limiting device, the button is inserted into the releasing part, a button reset spring is arranged between the button and the releasing part, the locking block is connected with the button through a connecting rod, one end of the linkage mechanism is connected with the releasing part, and the other end of the linkage mechanism is connected with the ISOFIX interface. The locking block is made of alloy steel, and the manufacturing technology of the locking block is specifically disclosed. The automobile child safety seat ISOFIX system is convenient to maintain and good in safety performance, the comprehensive performance of the locking block is good, and the service life of the whole system is prolonged.
Description
Technical field
The invention belongs to field of mechanical technique, is related to a kind of automobile children safety chair, particularly a kind of children of automobile peace
Full seat ISOFIX systems.
Background technology
The full name of ISOFIX is " International Standards Organisation FIX ", and Chinese means：
International Organization for standardization's fixing device.ISOFIX refers to a kind of system that a kind of child restrainnt system is connected with vehicle.It is one
The individual new standard with regard to disposing children's seat in the car.This standard is received by numerous automakers.
Used as the new standard with regard to disposing children's seat in the car, it is the peace for making children's seat that its effect is to ISOFIX
Dress becomes quick and simple, is rigidly connected, can be safer.Being equipped with the children's seat of ISOFIX just can easily be fixed to automobile
ISOFIX interfaces in, increase security.
But now ISOFIX systems on the market easily loosen in use, easily cause security incident, safety
Performance is low.Meanwhile, because ISOFIX systems are installed in the car, maintenance is inconvenient, causes certain wasting of resources；And release dress
The important role of the latch put, but the intensity of latch, hardness are general, cause the service life of latch short, and then
Affect the service life of whole system.
In sum, it is to solve the deficiency in existing automobile children safety chair ISOFIX system architectures, needs design one
Plant automobile children safety chair ISOFIX systems that are easy to maintenance, having a safety feature.
The content of the invention
The purpose of the present invention is there are the problems referred to above for existing technology, it is proposed that a kind of easy to maintenance, security performance
Good, the automobile children safety chair ISOFIX systems of long service life.
The purpose of the present invention can be realized by following technical proposal：A kind of automobile children safety chair ISOFIX systems,
Including stopping means, release device, link gear and ISOFIX interfaces, the stopping means includes gear plate, the gear
Plate is provided with some gear grooves, and the release device includes release portion, button, latch and limiting section, the release portion peace
It is mounted in stopping means, the button is plugged in release portion, and push-button reset spring is installed between button and release portion, institute
State push-button reset both ends of the spring to bear against on button and release portion, open up logical with sliding bevel on the latch
Groove, by connecting rod and button connects, the connecting rod runs through groove to the latch, and the connecting rod can be in sliding bevel
Upper slip, the limiting section is arranged in release portion, and limited location back-moving spring, the limit are installed between limiting section and release portion
Position back-moving spring two ends are born against on limiting section and release portion, and the limiting section is provided with the inlay card part with inlay card inclined-plane,
The inlay card part can be embedded in each gear groove, and limiting section is transported downwards along inlay card inclined-plane when limiting section is moved axially
Dynamic, the limiting section is connected by the pin that floats with link gear, and described link gear one end is connected with release portion, the other end and
ISOFIX interfaces connect；The latch is obtained by steel alloy, and the constituent and mass percent of the steel alloy are：C：
0.20%-0.22%, Si：0.20%-0.35%, Mn：0.80%-1.00%, Cr：1.00%-1.50%, Mo：0%-
0.01%th, Al：0.02%-0.06%, V：0.05%-0.08%, La：0.01%-0.015%, Ce：0.01%-0.015%, P
≤ 0.030%, S≤0.030%, N≤0.01%, Cu≤0.025%, Ni≤0.025%, balance of Fe and inevitably miscellaneous
Matter.
Latch in automobile children safety chair ISOFIX systems of the present invention is obtained using steel alloy, in common 20Cr
On the basis of steel alloy, increased the content of Mn and Cr, further limit the content of impurity P, S, Cu, Ni, N, and with the addition of conjunction
Gold element Al, V and lanthanide-indueed shift.The addition of Mn and Cr can improve the property such as intensity, hardness and wearability of steel
Can, particularly Cr can promote hardening of steel energy and carburization so that steel still has high intensity in high temperature, and increased steel
Wearability and corrosion resistance, improve steel hardening heat；And Mn is good deoxidier and desulfurizing agent, can be effectively improved
The quenching property of steel simultaneously improves the hot-working character of steel.Increasing their content in the present invention can further play their works in steel
With.And Al and V are excellent deoxidier, and compound can be formed with harmful element N, so as to play a part of crystal grain thinning,
And the growth of crystal grain is prevented, and their compounding adds the toughness that can indirectly improve steel alloy by crystal grain thinning degree, when
The addition of Al and V excessively can cause on the contrary the toughness of steel alloy to reduce, therefore respectively control the addition of Al and V in the present invention
System is in 0.02%-0.06% and 0.05%-0.08%.And the addition of rare earth element, on the one hand because rare earth can be removed effectively
Impurity P, S etc., play a part of deoxidation, desulfurization, degassing and reduce field trash, and energy crystal grain thinning, so as to be effectively improved steel
Plasticity and toughness；On the other hand, rare earth can with cleaning molten steel, improve the as-cast structure of steel, so as to effectively improve the surface of steel
Quality.But the addition of rare earth can excessively cause the embrittlement of steel, therefore close the addition control of La and Ce in the present invention
Suitable scope, and light rare earth La and Ce are adopted, it is relatively low relative to heavy rare earth price, save cost.Children of automobile peace of the present invention
The steel alloy that latch in full seat ISOFIX systems is adopted is adjusted on the basis of common 20Cr, not only meets
The performance requirement of 20Cr itself, but also effectively improve the quality and combination property of steel.
In a kind of above-mentioned automobile children safety chair ISOFIX systems, the latch is obtained by steel alloy, as
It is preferred that, the constituent and mass percent of the steel alloy are：C：0.20%-0.21%, Si：0.25%-0.30%, Mn：
0.85%-0.90%, Cr：1.20%-1.40%, Mo：0.002%-0.008%, Al：0.03%-0.05%, V：0.06%-
0.07%th, La：0.012%-0.015%, Ce：0.012%-0.015%, P≤0.030%, S≤0.030%, N≤0.01%,
Cu≤0.025%, Ni≤0.025%, balance of Fe and inevitable impurity.
In a kind of above-mentioned automobile children safety chair ISOFIX systems, the latch is obtained by steel alloy, as
It is preferred that, the constituent and mass percent of the steel alloy are：C：0.21%th, Si：0.28%th, Mn：0.88%th, Cr：
1.30%th, Mo：0.005%th, Al：0.04%th, V：0.065%th, La：0.013%th, Ce：0.013%th, P≤0.025%, S≤
0.025%th, N≤0.007%, Cu≤0.020%, Ni≤0.020%, balance of Fe and inevitable impurity.
Wherein, the processing technology of the latch comprises the steps：
S1, raw material pre-treatment：By raw material preheating to 280-320 DEG C, it is incubated standby；
S2, shaping：Above-mentioned preheated raw material is put in induction furnace, molten steel is smelted at 1000-1100 DEG C, then
Steel are poured in 810-880 DEG C, and latch blank is obtained through machining shaping；
S3, normalized treatment：Above-mentioned latch blank is carried out into secondary normalizing process, wherein first time normalizing temperature is 890-
950 DEG C, temperature retention time is 1.0-1.2h, air-cooled to room temperature；Second normalizing temperature is 880-920 DEG C, and temperature retention time is 1.0-
1.2h, it is air-cooled to room temperature；
S4, Q-tempering process：The above-mentioned latch blank through normalized treatment is carried out into Q-tempering process, quenching temperature
Spend for 820-880 DEG C, oil cooling is to room temperature after insulation 1.2-1.5h；Temperature is 180-200 DEG C, air-cooled after insulation 1.0-2.0h
To room temperature, last surface treated obtains latch finished product.
Preferably, the steel alloy used by the latch in automobile children safety chair ISOFIX systems of the present invention is using existing
There is the intermediate frequency furnace in technology to be smelted, compared with electric arc furnaces, intermediate frequency furnace denitrogenates that ability is strong, alloying element returns
Molten steel not carburetting in high income, fusion process, and the technological parameter such as the temperature in smelting process, refining time, stirring intensity
Easily regulate and control.Therefore the steel alloy used by latch is smelted in step S2 using intermediate frequency furnace, smelting is not only increased
Efficiency, and process without the need for AOD methods refining treatment or LF refining, smelting process is simplified, reduce into product cost.
After cast obtains latch blank, latch blank is heat-treated, heat treatment include normalized treatment with
Q-tempering is heat-treated.To latch blank using at secondary normalizing in the step of processing technology of the latch in present invention S3
Reason, i.e., first by latch blank be heated to 890-950 DEG C, air-cooled to room temperature after insulation 1.0-1.2h, then again by latch base
Part is heated to 880-920 DEG C, is incubated air-cooled to room temperature after 1.0-1.2h.Using secondary normalizing process, partly in order to guaranteeing
The abundant austenitizing of as-cast structure of steel alloy, on the other hand be then in order to eliminate normalizing procedure in introduced residual stress,
And obtaining portion divides bainite structure to effectively improve the combination properties such as intensity, the toughness of steel alloy.And the temperature of normalized treatment
Impact can be produced on the effect of normalized treatment with temperature retention time, the too low technique that can not reach normalized treatment of normalizing temperature will
Ask, normalizing temperature is too high to cause grain coarsening so as to reduce the performance such as intensity, toughness of steel alloy；And temperature retention time it is long or
Will just in the too short processing technology that can not make final steel alloy finished product reach the latch in quality requirement, therefore the present invention
The temperature and temperature retention time that fire is processed is controlled in rational scope.
After normalized treatment is carried out to latch blank, Q-tempering process is carried out to latch blank in step S4,
After quenching, temper, intensity, hardness, wearability, fatigue resistance and the toughness of steel alloy can be effectively improved
Etc. combination property.Hardening heat and temperature and their temperature retention time are the quality of steel and the influence factor of performance,
With the rising of hardening heat, intensity, hardness of steel etc. are gradually stepped up, but too high hardening heat can cause on the contrary plasticity and
Toughness is significantly reduced；Similarly, temperature is too high can cause intensity of steel etc. to decline；Temperature retention time is long or too short equal
The quality and performance of steel finished product can be affected.Therefore quenching and the temperature being tempered and temperature retention time are controlled suitable in the present invention
Scope, wherein hardening heat are 820-880 DEG C, and temperature retention time is 1.2-1.5h, and quenching oil temperature is 50-90 DEG C；Temperature
For 180-200 DEG C, temperature retention time is 1.0-2.0h.After the heat treatment, surface treatment is carried out to latch blank and obtains locking
Block finished product, wherein surface treatment can be the common process of surface treatment in this area such as cleaning, polishing, polishing.
In a kind of above-mentioned automobile children safety chair ISOFIX systems, the automobile children safety chair ISOFIX systems
System also includes cover plate, and the cover plate includes left cover and right cover plate, and the left cover is provided with some lid panel notches, the right cover
Plate is provided with some and one-to-one cover plate fixture block of lid panel notches, and the cover plate fixture block energy inlay card is described into lid panel notches
Cover plate is set on stopping means.
Stopping means and extraneous obstruct are prevented artificial damage stopping means and its internal structure by the cover plate, are improved
Security performance, and the left cover fastened by some lid panel notches and cover plate fixture block with right cover plate and constitutes cover plate, it is not only left
The stability of the junction of cover plate and right cover plate is protected, once and there is event in automobile children safety chair ISOFIX systems
Barrier, can in time open cover plate and be overhauled by maintenance tool.
In a kind of above-mentioned automobile children safety chair ISOFIX systems, the link gear includes the first release link
And the second release link being articulated and connected with the first release link, first release link is connected with release portion, and described
Two release links are connected by interface contiguous block with ISOFIX interfaces, and second release link is connected by the pin that floats with limiting section
Connect.
Release portion is connected with ISOFIX interfaces by two connecting rods, preventing that both directly link is likely to occur linkage card
Dead phenomenon, by link gear the first release link and the second release link are divided into, and two connecting rods can not only prevent linkage stuck
Phenomenon, and cushioning effect can be played, the security performance of ISOFIX systems is improve, and connect with ISOFIX in the second release link
Interface contiguous block is increased between mouthful so that ISOFIX interfaces are not easily disconnected from the second release link, further increase ISOFIX
The security performance of system.
In a kind of above-mentioned automobile children safety chair ISOFIX systems, the stopping means also includes stop collar, institute
Gear plate is stated on stop collar, the release device also includes that the switch main body in release portion, the switch main body can be accommodated
It is set in release portion, switch back-moving spring, the switch back-moving spring two ends difference is provided between switch main body and release portion
It is resisted against on switch main body and release portion, the switch main body is provided with switch chute, first release link can be in switch
Slide in chute.
When release device works, the presence of stop collar prevents the parts of release device because the reasons such as mechanical shock depart from
Respective tracks are deviateed in respective position, and switch main body further protects release portion, and the switch on switch main body is slided
Groove ensure that the direction of motion of the first release link, improve the security performance of automobile children safety chair ISOFIX systems, open
Closing the presence of back-moving spring can enable ISOFIX systems recover to want original position in no longer stress, prevent ISOFIX systems
System cannot locking phenomenon, improve the security performance of ISOFIX systems.
Compared with prior art, each part in the release device in the present invention is attached by back-moving spring etc., is made
Must keep in repair more convenient；The sliding bevel on groove that simultaneously latch is then opened up using body carries out discharging ISOFIX interfaces,
Improve security performance；In caulking groove, inlay card inclined-plane is resisted against on caulking groove inlay card part energy inlay card on limiting section, when spacing
When portion thinks that switch main body is moved, limiting section will be moved down under being interacted with caulking groove by inlay card inclined-plane until inlay card part takes off
From caulking groove, security performance is improve.And the latch in the present invention is obtained using steel alloy, is changed on the basis of 20Cr
Enter and add appropriate alloying element and rare earth element, by the synergy produced between element, improve the mechanics of latch
Performance, and processed by simple processing technology, production cost is reduced, the steel alloy of good combination property is obtained, answered
Use on latch, effectively extend the service life of latch, and then extend the service life of automobile children safety chair.
Description of the drawings
Fig. 1 is the explosive view of a preferred embodiment of the present invention.
Fig. 2 is the partial structural diagram of a preferred embodiment of the present invention.
Fig. 3 is the structural representation of release device in a preferred embodiment of the present invention.
Fig. 4 is the sectional view in Fig. 3 at A-A.
Fig. 5 is the sectional view of a preferred embodiment of the present invention.
In figure, 10, stopping means；11st, gear plate；111st, gear groove；12nd, stop collar；20th, release device；21st, discharge
Portion；22nd, button；221st, push-button reset spring；23rd, latch；231st, groove；2311st, sliding bevel；24th, limiting section；241st, limit
Position back-moving spring；242nd, inlay card part；2421st, inlay card inclined-plane；243rd, float pin；25th, switch main body；251st, back-moving spring is switched；
252nd, chute is switched；30th, link gear；31st, the first release link；32nd, the second release link；321st, interface contiguous block；40、
ISOFIX interfaces；50th, cover plate；51st, left cover；511st, lid panel notches；52nd, right cover plate；521st, cover plate fixture block.
Specific embodiment
The following is the specific embodiment of the present invention and combine accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
As shown in Figures 1 to 4, this automobile children safety chair ISOFIX systems include stopping means, release device, linkage
Mechanism and ISOFIX interfaces, stopping means includes gear plate, and gear plate is provided with some gear grooves, and release device includes release
Portion, button, latch and limiting section, release portion be arranged on stopping means in, button is plugged in release portion, and button with release
Put and be provided between portion push-button reset spring, push-button reset both ends of the spring is born against on button and release portion, on latch
Open up the groove with sliding bevel, by connecting rod and button connects, connecting rod runs through groove to latch, and connecting rod can be
Slide on sliding bevel, limiting section is arranged in release portion, and limited location back-moving spring, limit are installed between limiting section and release portion
Position back-moving spring two ends are born against on limiting section and release portion, and limiting section is provided with the inlay card part with inlay card inclined-plane, inlay card
Part can be embedded in each gear groove, and limiting section is moved downward along inlay card inclined-plane when limiting section is moved axially, spacing
Portion is connected by the pin that floats with link gear, and link gear one end is connected with release portion, and the other end is connected with ISOFIX interfaces.
As shown in figure 5, pressing the button, button to switch main body is moved, and now push-button reset spring is in compressive state, button
Connecting rod is driven to slide on the sliding bevel of groove, so as to drive latch to move to switch main body, release portion is also to switch
Bulk motion, it is in compressive state now to switch back-moving spring, and the limiting section in release portion is moved, because of inlay card part card
It is embedded on the gear groove on gear plate, limiting section is moved downward until departing from gear because inlay card inclined-plane and gear groove collide
Groove, now in compressive state, release portion drives link gear motion, link gear and ISOFIX interfaces point to spacing back-moving spring
From ISOFIX interfaces are opened；
When button is pinned in stopping, push-button reset spring and switch back-moving spring recover each part to initial relative position
On, in the gear groove on the inlay card part inlay card to gear plate of limiting section, the whole ISOFIX systems of locking.
Preferably, automobile children safety chair ISOFIX systems also include cover plate, and cover plate includes left cover and right cover plate, left
Cover plate is provided with some lid panel notches, and right cover plate is provided with some and one-to-one cover plate fixture block of lid panel notches, cover plate fixture block
Into lid panel notches, cover plate is set on stopping means energy inlay card.
Stopping means and extraneous obstruct are prevented artificial damage stopping means and its internal structure by cover plate, improve peace
Performance, and left cover entirely is fastened by some lid panel notches and cover plate fixture block with right cover plate and constitutes cover plate, not only left cover and the right side
The stability of the junction of cover plate is protected, once and automobile children safety chair ISOFIX system malfunctions, can be with
Cover plate is opened in time by maintenance tool to be overhauled.
Preferably, the second release company that link gear includes the first release link and is articulated and connected with the first release link
Bar, the first release link is connected with release portion, and the second release link is connected by interface contiguous block with ISOFIX interfaces, and second releases
Put connecting rod to be connected with limiting section by the pin that floats.
Release portion is connected with ISOFIX interfaces by two connecting rods, preventing that both directly link is likely to occur linkage card
Dead phenomenon, by link gear the first release link and the second release link are divided into, and two connecting rods can not only prevent linkage stuck
Phenomenon, and cushioning effect can be played, the security performance of ISOFIX systems is improve, and connect with ISOFIX in the second release link
Interface contiguous block is increased between mouthful so that ISOFIX interfaces are not easily disconnected from the second release link, further increase ISOFIX
The security performance of system.
Preferably, stopping means also includes stop collar, and gear plate is arranged on stop collar, and release device also includes accommodating
The switch main body in release portion, switch main body is set in release portion, and switch back-moving spring is provided between switch main body and release portion,
Switch back-moving spring two ends are born against on switch main body and release portion, and switch main body is provided with switch chute, the first release
Connecting rod can slide in switch chute.
When release device works, the presence of stop collar prevents the parts of release device because the reasons such as mechanical shock depart from
Respective tracks are deviateed in respective position, and switch main body further protects release portion, and the switch on switch main body is slided
Groove ensure that the direction of motion of the first release link, improve the security performance of automobile children safety chair ISOFIX systems, open
Closing the presence of back-moving spring can enable ISOFIX systems recover to want original position in no longer stress, prevent ISOFIX systems
System cannot locking phenomenon, improve the security performance of ISOFIX systems.
This automobile children safety chair ISOFIX systems in an initial condition, are pressed the button, and button to switch main body is moved,
Now push-button reset spring is in compressive state, and button drives connecting rod to slide on the sliding bevel of groove, so as to drive locking
Block to switch main body is moved, and release portion also moves to switch main body, and it is in compressive state now to switch back-moving spring, installed in release
Limiting section in portion is moved, because on gear groove of the inlay card part inlay card on gear plate, limiting section is because of inlay card inclined-plane and gear
Groove collides and moves downward until departing from gear groove, now spacing back-moving spring is in compressive state, release portion drives the
One release link is moved, and the second release link move with the first release link, the interface contiguous block in the second release link and
ISOFIX interfaces are separated, and ISOFIX interfaces are opened；
When button is pinned in stopping, push-button reset spring, switch back-moving spring and spacing back-moving spring recover each part
To initial relative position, in the gear groove on the inlay card part inlay card to gear plate of limiting section, the whole ISOFIX systems of locking
System.
Wherein, the latch is obtained by steel alloy, and the constituent and mass percent of the steel alloy are：C：
0.20%-0.22%, Si：0.20%-0.35%, Mn：0.80%-1.00%, Cr：1.00%-1.50%, Mo：0%-
0.01%th, Al：0.02%-0.06%, V：0.05%-0.08%, La：0.01%-0.015%, Ce：0.01%-0.015%, P
≤ 0.030%, S≤0.030%, N≤0.01%, Cu≤0.025%, Ni≤0.025%, balance of Fe and inevitably miscellaneous
Matter.
Table 1：Embodiment 1-5 is used to prepare the constituent and mass percent of latch
Embodiment 1
Raw material pre-treatment：According to the raw material used by the latch in the embodiment 1 of table 1,280 DEG C are preheated to, are incubated standby.
Shaping：Above-mentioned preheated raw material is put in intermediate frequency furnace, molten steel, Ran Houyu are smelted at 1000 DEG C
820 DEG C pour into steel, and obtain latch blank through machining shaping；Wherein pour into a mould and be machined using existing
Pouring technology and machining shaping technique.
Normalized treatment：Above-mentioned latch blank is carried out into secondary normalizing process, wherein first time normalizing temperature is 890 DEG C,
Temperature retention time is 1.0h, air-cooled to room temperature；Second normalizing temperature is 880 DEG C, and temperature retention time is 1.0h, air-cooled to room temperature.
Q-tempering process：The above-mentioned latch blank through normalized treatment is carried out into Q-tempering process, hardening heat
For 850 DEG C, temper is carried out after insulation 1.2h Jing after 70 DEG C of quenching oil is cooled to room temperature, wherein temperature is 180 DEG C,
Air-cooled to room temperature after insulation 1.0h, last surface treated obtains latch finished product.
Embodiment 2
Raw material pre-treatment：According to the raw material used by the latch in the embodiment 2 of table 1,290 DEG C are preheated to, are incubated standby.
Shaping：Above-mentioned preheated raw material is put in intermediate frequency furnace, molten steel, Ran Houyu are smelted at 1050 DEG C
840 DEG C pour into steel, and obtain latch blank through machining shaping；Wherein pour into a mould and be machined using existing
Pouring technology and machining shaping technique.
Normalized treatment：Above-mentioned latch blank is carried out into secondary normalizing process, wherein first time normalizing temperature is 920 DEG C,
Temperature retention time is 1.0h, air-cooled to room temperature；Second normalizing temperature is 880 DEG C, and temperature retention time is 1.1h, air-cooled to room temperature.
Q-tempering process：The above-mentioned latch blank through normalized treatment is carried out into Q-tempering process, hardening heat
For 840 DEG C, temper is carried out after insulation 1.5h Jing after 75 DEG C of quenching oil is cooled to room temperature, wherein temperature is 200 DEG C,
Air-cooled to room temperature after insulation 2.0h, last surface treated obtains latch finished product.
Embodiment 3
Raw material pre-treatment：According to the raw material used by the latch in the embodiment 3 of table 1,310 DEG C are preheated to, are incubated standby.
Shaping：Above-mentioned preheated raw material is put in intermediate frequency furnace, molten steel, Ran Houyu are smelted at 1100 DEG C
860 DEG C pour into steel, and obtain latch blank through machining shaping；Wherein pour into a mould and be machined using existing
Pouring technology and machining shaping technique.
Normalized treatment：Above-mentioned latch blank is carried out into secondary normalizing process, wherein first time normalizing temperature is 930 DEG C,
Temperature retention time is 1.2h, air-cooled to room temperature；Second normalizing temperature is 900 DEG C, and temperature retention time is 1.2h, air-cooled to room temperature.
Q-tempering process：The above-mentioned latch blank through normalized treatment is carried out into Q-tempering process, hardening heat
For 850 DEG C, temper is carried out after insulation 1.3h Jing after 80 DEG C of quenching oil is cooled to room temperature, wherein temperature is 200 DEG C,
Air-cooled to room temperature after insulation 1.5h, last surface treated obtains latch finished product.
Embodiment 4
Raw material pre-treatment：According to the raw material used by the latch in the embodiment 4 of table 1,300 DEG C are preheated to, are incubated standby.
Shaping：Above-mentioned preheated raw material is put in intermediate frequency furnace, molten steel, Ran Houyu are smelted at 1000 DEG C
830 DEG C pour into steel, and obtain latch blank through machining shaping；Wherein pour into a mould and be machined using existing
Pouring technology and machining shaping technique.
Normalized treatment：Above-mentioned latch blank is carried out into secondary normalizing process, wherein first time normalizing temperature is 910 DEG C,
Temperature retention time is 1.2h, air-cooled to room temperature；Second normalizing temperature is 900 DEG C, and temperature retention time is 1.0h, air-cooled to room temperature.
Q-tempering process：The above-mentioned latch blank through normalized treatment is carried out into Q-tempering process, hardening heat
For 820 DEG C, temper is carried out after insulation 1.2h Jing after 50 DEG C of quenching oil is cooled to room temperature, wherein temperature is 190 DEG C,
Air-cooled to room temperature after insulation 1.2h, last surface treated obtains latch finished product.
Embodiment 5
Raw material pre-treatment：According to the raw material used by the latch in the embodiment 5 of table 1,320 DEG C are preheated to, are incubated standby.
Shaping：Above-mentioned preheated raw material is put in intermediate frequency furnace, molten steel, Ran Houyu are smelted at 1050 DEG C
880 DEG C pour into steel, and obtain latch blank through machining shaping；Wherein pour into a mould and be machined using existing
Pouring technology and machining shaping technique.
Normalized treatment：Above-mentioned latch blank is carried out into secondary normalizing process, wherein first time normalizing temperature is 950 DEG C,
Temperature retention time is 1.2h, air-cooled to room temperature；Second normalizing temperature is 920 DEG C, and temperature retention time is 1.2h, air-cooled to room temperature.
Q-tempering process：The above-mentioned latch blank through normalized treatment is carried out into Q-tempering process, hardening heat
For 880 DEG C, temper is carried out after insulation 1.6h Jing after 90 DEG C of quenching oil is cooled to room temperature, wherein temperature is 180 DEG C,
Air-cooled to room temperature after insulation 1.0h, last surface treated obtains latch finished product.
Latch prepared by obtained latch in embodiment 1-5 and existing common 20Cr according to《GB/T228-
2010 metal material tensile test at room temperature》Standard carry out performance test and contrast, test result is as shown in table 2.
Latch prepared by latch obtained in embodiment 1-5 and existing common 20Cr according to《GB/T12444-
2006 metal materials-abrasion test method》Statistics wear rate is simultaneously contrasted, as a result as shown in table 2.
Table 2：The performance test results of latch obtained in embodiment of the present invention 1-5
In sum, the latch in automobile children safety chair ISOFIX systems of the present invention is obtained using steel alloy,
On the basis of common 20Cr steel alloys, increased the content of Mn and Cr, further limit the content of each impurity, and add Al, V
And lanthanide-indueed shift, the good combination property such as tensile strength, yield strength, the hardness of the steel alloy for obtaining, applied
To on latch, its service life is extended.
Specific embodiment described herein is only explanation for example spiritual to the present invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications to described specific embodiment or supplement or replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (9)
1. a kind of automobile children safety chair ISOFIX systems, including stopping means, release device, link gear and ISOFIX
Interface, the release device includes release portion, button, latch and limiting section, it is characterised in that the stopping means includes
Gear plate, the gear plate is provided with some gear grooves, and the release portion is arranged in stopping means, and the button is plugged in be released
Put in portion, and push-button reset spring be installed between button and release portion, the push-button reset both ends of the spring bear against by
On button and release portion, the groove with sliding bevel is opened up on the latch, the latch is connected by connecting rod with button
Connect, the connecting rod runs through groove, and the connecting rod can slide on sliding bevel, the limiting section is arranged on release portion
On, and limited location back-moving spring is installed between limiting section and release portion, the spacing back-moving spring two ends are born against spacing
In portion and release portion, the limiting section is provided with the inlay card part with inlay card inclined-plane, and the inlay card part can be embedded in each gear
In groove, and limiting section is moved downward along inlay card inclined-plane when limiting section is moved axially, and the limiting section is by pin and the connection of floating
Motivation structure connects, and described link gear one end is connected with release portion, and the other end is connected with ISOFIX interfaces；The latch is by closing
Golden steel is obtained, and the constituent and mass percent of the steel alloy are：C：0.20%-0.22%, Si：0.20%-0.35%,
Mn：0.80%-1.00%, Cr：1.00%-1.50%, Mo：0%-0.01%, Al：0.02%-0.06%, V：0.05%-
0.08%th, La：0.01%-0.015%, Ce：0.01%-0.015%, P≤0.030%, S≤0.030%, N≤0.01%, Cu
≤ 0.025%, Ni≤0.025%, balance of Fe and inevitable impurity.
2. automobile children safety chair ISOFIX systems according to claim 1, it is characterised in that the latch is by closing
Golden steel is obtained, and the constituent and mass percent of the steel alloy are：C：0.20%-0.21%, Si：0.25%-0.30%,
Mn：0.85%-0.90%, Cr：1.20%-1.40%, Mo：0.002%-0.008%, Al：0.03%-0.05%, V：
0.06%-0.07%, La：0.012%-0.015%, Ce：0.012%-0.015%, P≤0.030%, S≤0.030%, N≤
0.01%th, Cu≤0.025%, Ni≤0.025%, balance of Fe and inevitable impurity.
3. automobile children safety chair ISOFIX systems according to claim 1, it is characterised in that the latch plus
Work technique comprises the steps：
S1, raw material pre-treatment：By the raw material preheating of latch described in claim 1 to 280-320 DEG C, it is incubated standby；
S2, shaping：Above-mentioned preheated raw material is put in induction furnace, it is smelting, pour into steel, then machined shaping
Obtain latch blank；
S3, normalized treatment：Latch blank is carried out into secondary normalizing process, wherein first time normalizing temperature is 890-950 DEG C, is protected
The warm time is 1.0-1.2h, air-cooled to room temperature；Second normalizing temperature is 880-920 DEG C, and temperature retention time is 1.0-1.2h, air-cooled
To room temperature；
S4, Q-tempering process：The above-mentioned latch blank through normalized treatment is carried out into Q-tempering process, hardening heat is
820-880 DEG C, oil cooling is to room temperature after insulation 1.2-1.5h；Temperature is 180-200 DEG C, air-cooled to room after insulation 1.0-2.0h
Temperature, last surface treated obtains latch finished product.
4. automobile children safety chair ISOFIX systems according to claim 3, it is characterised in that latch processing technology
The step of S2 described in melting temperature be 1000-1100 DEG C.
5. automobile children safety chair ISOFIX systems according to claim 3, it is characterised in that latch processing technology
The step of S2 described in cast temperature be 810-880 DEG C.
6. automobile children safety chair ISOFIX systems according to claim 3, it is characterised in that latch processing technology
The step of S4 described in Q-tempering process in quenching oil temperature be 50-90 DEG C.
7. automobile children safety chair ISOFIX systems according to claim 1, it is characterised in that the children of automobile peace
Full seat ISOFIX systems also include cover plate, and the cover plate includes left cover and right cover plate, and the left cover is provided with some lids
Plate groove, the right cover plate is provided with some and one-to-one cover plate fixture block of lid panel notches, and the cover plate fixture block energy inlay card is extremely
In lid panel notches, the cover plate is set on stopping means.
8. automobile children safety chair ISOFIX systems according to claim 7, it is characterised in that the link gear bag
The second release link for including the first release link and being articulated and connected with the first release link, first release link and release
Portion connects, and second release link is connected by interface contiguous block with ISOFIX interfaces, and second release link is by floating
Dynamic pin is connected with limiting section.
9. automobile children safety chair ISOFIX systems according to claim 8, it is characterised in that the stopping means is also
Including stop collar, the gear plate is arranged on stop collar, and the release device also includes that the switch main body in release portion can be accommodated,
The switch main body is set in release portion, and switch back-moving spring is provided between switch main body and release portion, and the switch resets
Both ends of the spring is born against on switch main body and release portion, and the switch main body is provided with switch chute, first release
Connecting rod can slide in switch chute.
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| CN201410812340.4A CN104590064B (en) | 2014-12-23 | 2014-12-23 | Automobile child safety seat ISOFIX system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105083071A (en) * | 2015-08-12 | 2015-11-25 | 宁波中哲儿童安全用品有限公司 | Child seat |
| CN105644397B (en) * | 2016-04-07 | 2017-09-05 | 宁波永驰婴童用品有限公司 | The ISOFIX components of child safety seat |
| CN108342560A (en) * | 2018-02-27 | 2018-07-31 | 苏州特鑫精密电子有限公司 | A kind of heat treatment process of precision screw |
| CN110406437A (en) * | 2019-08-19 | 2019-11-05 | 江苏安用座椅科技有限公司 | A kind of adjusting retaining mechanism of child safety seat installation and assembling, application method |
| CN114407742B (en) * | 2022-01-20 | 2023-04-14 | 宁波宝贝第一母婴用品有限公司 | ISOFIX sleeve pipe and children's safety seat |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4561834B2 (en) * | 2005-04-18 | 2010-10-13 | 住友金属工業株式会社 | Low alloy steel |
| EP2565287B1 (en) * | 2010-04-28 | 2020-01-15 | Nippon Steel Corporation | High-strength stainless steel for oil well and high-strength stainless steel pipe for oil well |
| CN101906557A (en) * | 2010-09-15 | 2010-12-08 | 江苏天业合金材料有限公司 | Ultralow-temperature welded alloy steel and production method thereof |
| CN102383044B (en) * | 2011-10-28 | 2013-02-06 | 西安交通大学 | Multicomponent high speed steel used for preparing roller |
| CN102627079B (en) * | 2012-04-26 | 2013-08-07 | 江苏幸运宝贝安全装置制造有限公司 | Automobile safety constraint system adjustable ISOFIX system seat in child car |
| CN103386904A (en) * | 2012-05-11 | 2013-11-13 | 常州博万达汽车安全设备有限公司 | Child safety chair ISOFIX connecting device |
| CN203698009U (en) * | 2014-01-06 | 2014-07-09 | 好孩子儿童用品有限公司 | Telescoping mechanism for ISOFIX (international standards organization FIX) |
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Address after: 315105 Yinzhou District City, Zhejiang Province under the street should be strong and prosperous road, No. 505, No. Patentee after: Wise child safety articles for use Co., Ltd in Ningbo Address before: 315100 Yinzhou District investment and entrepreneurship center, Ningbo City, prosperous road, No. 501, No. Patentee before: NINGBO CHISAGE AUTOMOTIVE SAFETY SYSTEM CO., LTD. |
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