CN209063938U - A kind of mechanism of backrest energy-absorbing - Google Patents
A kind of mechanism of backrest energy-absorbing Download PDFInfo
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- CN209063938U CN209063938U CN201821678992.3U CN201821678992U CN209063938U CN 209063938 U CN209063938 U CN 209063938U CN 201821678992 U CN201821678992 U CN 201821678992U CN 209063938 U CN209063938 U CN 209063938U
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- energy
- fracture
- lower connecting
- absorbing
- connecting plate
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Abstract
The utility model discloses a kind of mechanism of backrest energy-absorbing, including cushion side plate and angle adjustor lower connecting plate, energy absorption device and fixed device；Fixed device includes forward and backward nut and forward and backward shoulder bolt；Energy absorption device is included in angle adjustor lower connecting plate and sets a special-shaped punching groove and energy-absorbing piece, energy-absorbing piece is made of first line of a couplet portion, supporting part and fracture, supporting part is a circular ring structure, fracture is made of symmetrical two sections of narrowbands and connect in first line of a couplet portion with supporting part, and the surface in the middle part of each narrowband is equipped with breaking groove in one week；Former and later two bolt connecting holes in cushion side plate are respectively welded in forward and backward nut；Angle adjustor lower connecting plate, energy-absorbing piece and cushion side plate are successively compressed and connect completion with front nut and fixed by front step bolt；Backward step bolt passes through angle adjustor lower connecting plate and is connected with the back nut for being welded on cushion side plate.The utility model can for fast fracture to protect occupant's incidence to escape injury, effect be good at low cost when automobile is knocked into the back.
Description
Technical field
The utility model belongs to vehicle seat mechanism technology field, and in particular to a kind of vehicle rear-end collision collision rear backrest energy-absorbing
The mechanism of safety.
Background technique
In trap for automobile traffic accident, whiplash injury is a kind of most commonly seen damage, high-incidence in rear-end collision or collision
In traffic accident.When in case of by rear-end impact, the vehicle that accelerates suddenly passes through backrest drive occupant's body wink forward
Between accelerate, and thus occupant's incidence in free state causes body to exist since effect of inertia keeps original stationary state
Horizontal direction generates acceleration great change relative to incidence suddenly, therefore will cause cervical vertebra injury.There are documents and materials to show, is touching
Rear 50ms-100ms is hit, neck deforms in straight condition, and shearing force starts to act on neck generation；In 100ms-
130ms period, Cervical vertebra start elongation and become lordosis in " S " type；It is being greater than the 130ms period, shearing force continues to act on lower neck
Portion's joint capsule extends it excessively, and entire cervical vertebra is thereby resulted in ceruical uertebra part injury by " squeezing action ".
Since vehicle rear-end collision or head-on crash cause cervical vertebra injured, this injury is not only incidence height, even more due to it
Position is special, often leads to generate serious sequelae.For taking precautions against the injury of this accident, there are many actively pacify for the prior art
The full precautionary measures or the passive security precautionary measures, what these measures provided is the structure of simple absorbable impact energy mostly, e.g.,
Existing WHIPS system is to buffer rear-end impact energy by the fine structure of seat when vehicle is knocked into the back, and reduces front row and multiplies
The difference of the acceleration in the H&N portion of member reduces injury.The deficiency of these technical solutions is so that armchair structure is complicated, cost
Also much higher, also have the problem that it is extremely short in a flash, only by absorb impact energy be not enough because inhale
A process for accumulation will always be had by receiving energy, this cumulative process often seems excessively dilatory, prevent mechanism effect is from very
It is satisfactory.
Summary of the invention
The purpose of this utility model be overcome the prior art vehicle rear-end collision collide after by energy absorber mitigation occupant by
Structure present in device to injury is many and diverse, delayed action, the high deficiency of manufacturing cost, provide a kind of fracture insurance, energy-absorbing,
And the vehicle seat release mechanism that structure is simple and inexpensive.
The purpose of this utility model is achieved through the following technical solutions.
A kind of mechanism of backrest energy-absorbing, including cushion side plate and angle adjustor lower connecting plate, characterized in that have an energy absorption device
An and fixed device；Fixed device includes forward and backward nut and forward and backward shoulder bolt；Energy absorption device, which is included under angle adjustor, to be connected
Plate correspond to the bolted position of front step be equipped with a special-shaped punching groove and one can in the stroke of very little incite somebody to action
The power absorbed impact is increased to the energy-absorbing piece of 6000N or more, and energy-absorbing piece is made of first line of a couplet portion, supporting part and fracture, the first line of a couplet
Portion is the slab construction for being welded to connect angle adjustor lower connecting plate, and supporting part is an annulus matched with front step bolt
Structure, fracture are made of symmetrical two sections of narrowbands and connect in first line of a couplet portion with supporting part, the surface in the middle part of each narrowband one week
Equipped with breaking groove；Former and later two bolt connecting holes in cushion side plate are respectively welded in the forward and backward nut；Front step bolt according to
It is secondary that angle adjustor lower connecting plate, energy-absorbing piece and cushion side plate are compressed and connect completion fixation with front nut；Backward step bolt passes through
Angle adjustor lower connecting plate is fixedly connected with the back nut for being welded on cushion side plate.
Toughness material enbrittles behavior under certain condition, and making the condition of toughness material embrittlement includes that there are notches, height
Strain rate and low temperature；Low temperature brittleness therein often needs to reach -40 DEG C, in car for general low carbon-structural steel
Seat, low temperature brittleness are not considered generally.
Since energy-absorbing piece itself is used as a kind of structural connection, the structural steel of low-carbon one kind is generallyd use, energy-absorbing piece is just
Toughness material property is presented under the conditions of being often used, there is enough Elasticity performances, and is provided with the portion of notch in structural member
Position, be allowed to impact when be converted into fragile material, easily the high strain-rate caused by being impacted due to be broken.If no
This ad hoc notch, although effect of the part of the plate shape by impact force, the property of several toughness materials may also be presented in component
Matter, although more or less stretcher strain occurred before this rather than is broken either last also generation fracture immediately due to it
Deformation time is longer, may not have and be less than within 50ms, and the insurance of the moment fracture unloading within 100ms is made at the latest
With followed by some total performance differences of the two of fracture section narrowband and being distributed unbalanced, two sections of narrowband energy by impact energy
It cannot be broken simultaneously, even more a uncertain factor, if fracture cannot be synchronized but single hop fracture, the meaning of fracture energy absorption mechanism
Justice will have a greatly reduced quality.In summary it discusses, setting breaking groove is important measure.
Preferred embodiment, the change width section of the punching groove are 12mm~13mm, and the width of punching groove is less than front step
The diameter of the straight bar section of bolt, and with impact stroke difference, gradually become smaller or changes by waveform rule.
Preferred embodiment, the cross-sectional area of fracture, i.e. narrowband be equipped with fracture groove location cross-sectional area be 9.5~
12.5mm2。
The section configuration of preferred embodiment, breaking groove is V-type, and slot bottom has arc transition.
It is related to the particular importance of personal safety in view of the application of energy-absorbing piece fracture has, so energy-absorbing piece
Breaking groove, that is, notch shape selects V-shaped structure without selecting U-shaped structure in conventional type selecting, is more advantageous to acceleration fracture and unloads
It carries.The transition arc of slot bottom can prevent part in normal use because of slot bottom generation stress concentration rather than beam fracture makes energy-absorbing
Piece surprisingly fails.
Preferred embodiment, under normal temperature conditions the notched bar impact strength ɑ of fractureKEqual to or slightly less than medicine about to human body neck
Cause the ballistic work injured obviously or to a certain degree divided by the resulting value of fracture location cross-sectional area, unit N-m/mm in portion2。
The ballistic work passes through the energy value that vehicle body is transferred to backrest, is specifically transmitted by the front step bolt
Impact energy values.
Preferred embodiment, mechanism are symmetrical arranged relative at left and right sides of seat.
The beneficial effects of the utility model are:
1, energy-absorbing piece is set, and moment fracture unloading has safety effect；
2, it is equipped with punching groove, passes through deformation and triboabsorption impact energy；
3, the fracture of energy-absorbing piece is equipped with breaking groove, meets the brittle condition requirement of fracture mechanics, it is ensured that two sections of narrowband energy
It reaches relative synchronization under the conditions of impact and rapidly realizes fracture；
4, structurally reasonable, simple, it is easily assembled；
5, occupied space position is small；
6, at low cost.
Detailed description of the invention
Fig. 1 is an embodiment of the present invention structural schematic diagram；
Fig. 2 is a kind of decomposition diagram of embodiment mechanism；
Fig. 3 is a kind of assembling schematic diagram of embodiment mechanism；
Fig. 4 is a kind of energy-absorbing chip architecture schematic diagram；
Fig. 5 is partial enlargement diagram at B in Fig. 4；
The structural schematic diagram of Fig. 6 angle adjustor lower connecting plate；
Fig. 7 is the lower view of Fig. 6, and the connection relationship of energy-absorbing piece Yu angle adjustor lower connecting plate is shown in figure；
Fig. 8 is the A-A diagrammatic cross-section in Fig. 3.
In figure, cushion side plate 1；Front nut 11；Back nut 12；Angle adjustor lower connecting plate 2；Front step bolt 31；Backward step
Bolt 32；Connecting hole 321；Punching groove 4；Energy-absorbing piece 5；First line of a couplet portion 51；Supporting part 52；Circular ring structure 521；Fracture 53；Narrowband
531；Breaking groove 532；Cushion assembly 6；Backrest assembly 7.
Specific embodiment
Elaborate with reference to the accompanying drawing to the embodiments of the present invention: the present embodiment is with the utility model technology
Implemented under premised on scheme, the detailed implementation method and specific operation process are given, but the protection of the utility model
Range is not limited to the following embodiments.
Embodiment: as shown in Figure 1 and Figure 2, a kind of mechanism of backrest energy-absorbing, including cushion side plate 1 and angle adjustor lower connecting plate
2, there are an energy absorption device and a fixed device, wherein fixed device includes front nut 11, back nut 12 and corresponding front step spiral shell
Bolt 31, backward step bolt 32；Energy absorption device includes corresponding to the position connected with front step bolt 31 in angle adjustor lower connecting plate 2
The power absorbed impact can be increased to 6000N's or more in the stroke of very little equipped with a special-shaped punching groove 4 and one
Energy-absorbing piece 5.(referring to Fig. 3)
Energy-absorbing piece 5 is made of first line of a couplet portion 51, supporting part 52 and fracture 53, and first line of a couplet portion 51 is for being welded to connect angle modulation
The slab construction of device lower connecting plate 2, supporting part 52 are a circular ring structure 521 matched with front step bolt 31, fracture
53 are made of symmetrical two sections of narrowbands 531 and connect in first line of a couplet portion 51 with supporting part 52, the surface in the middle part of each narrowband 531 one week
It is carved with breaking groove 532, the section configuration of breaking groove 532 is V-type, and slot bottom has transition arc.(referring to fig. 4,5)
When assembly, first on seat cushion side plate 1, front nut 11 is welded in 31 connecting hole of front step bolt, by back nut 12
It is welded in 32 connecting hole 321 of backward step bolt.The first line of a couplet portion 51 of energy-absorbing piece 5 is soldered on angle adjustor lower connecting plate 2 (referring to figure
6、7)。
It need to guarantee the upper end center of circular hole of the punching groove 4 on angle adjustor lower connecting plate 2, the annulus knot of energy-absorbing piece 5 when welding
11 center of front nut and front step bolt 31 of 521 center of structure and cushion side plate 1 are coaxial.Front step bolt 31 is successively by angle modulation
Device lower connecting plate 2, energy-absorbing piece 5 and cushion side plate 3 compress and connect completion with front nut 11 and fix；Backward step bolt 32, which passes through, to be adjusted
Angle device lower connecting plate 2 is fixedly connected with the back nut 12 for being welded on cushion side plate 1.It is covered by cushion side plate 1 side of energy-absorbing piece 5
Lid, other side rest part in addition to 4 part of punching groove of angle adjustor lower connecting plate 2 are covered by angle adjustor lower connecting plate 2.(ginseng
See Fig. 8)
The change width section of punching groove 4 is 12mm~13mm, and the width of punching groove 4 is less than 31 straight bar section of front step bolt
Diameter, and with impact stroke difference, be changed stepwise.
The cross-sectional area of fracture 53, i.e., be carved on narrowband 531 532 position of breaking groove cross-sectional area be 9.5~
12.5mm2。
Common automotive seat includes cushion assembly 6 and backrest assembly 7, wherein above-mentioned angle adjustor lower connecting plate 2 has pair
Claim two pieces, is connected to 7 lower end two sides of backrest assembly；Above-mentioned cushion side plate 1 also has symmetrical two pieces, is connected to cushion
6 rear end sides of assembly.Cushion assembly 6 and backrest assembly 7 are connected in by the connection of cushion side plate 1 and angle adjustor lower connecting plate 2
Together.When automobile generation is knocked into the back, positioned at cushion assembly 6 and the passenger on backrest assembly 7 is leaned against, may be accelerated because of collision
Degree loads on the body of occupant by seat and backrest, and to the incidence of hysteresis motion damages due to inertia force acts on,
Therefore it is key measure that mechanism cuts off collision energy conduction in the hinge of backrest assembly at once.
In vehicle when being knocked into the back, front step bolt 31 is influenced by backrest assembly 7 with the movement tendency along impact direction,
When impact force is when the power of the direction reaches certain value, do not occurred by the fracture 53 of the energy-absorbing piece 5 of 4 covering part of punching groove disconnected
It splits；Impact force will make front step bolt 31 continue to move to the other end along punching groove 4, the two sides of punching groove 4 and front step bolt
31 generate extruding force, hinder front step bolt 31 to move, sponge most impact energy.
The material impact toughness value ɑ of fracture 53 under normal temperature conditionsKSelection principle be, be equal to or slightly less than medicine close
In causing the ballistic work injured obviously or to a certain degree divided by the resulting value of fracture location cross-sectional area, unit neck
For N-m/mm2.The ballistic work passes through the energy value that vehicle body is transferred to backrest, specifically passes through the foreground
The impact energy values that rank bolt 31 transmits.
Mechanism is symmetrical arranged relative at left and right sides of seat.
The utility model for vehicle seat back setting fracture insurance institution, can when automobile is knocked into the back fast fracture
It is structurally reasonable, effect is good and at low cost to protect occupant's incidence to escape injury.The utility model has been shown and described above
The advantages of basic principles and main features and the utility model.It should be understood by those skilled in the art that the utility model not by
The limitation of above-described embodiment, the description of the embodiments and the specification only illustrate the principle of the present utility model, is not departing from
Under the premise of the spirit and scope of the utility model, the utility model also has various changes and improvements, these changes and improvements are all
It falls within the scope of the claimed invention.The utility model requires protection scope is by appended claims and its waits
Effect object defines.
Claims (6)
1. a kind of mechanism of backrest energy-absorbing, including cushion side plate and angle adjustor lower connecting plate, characterized in that have an energy absorption device and
One fixed device；Fixed device includes forward and backward nut and forward and backward shoulder bolt；Energy absorption device is included in angle adjustor lower connecting plate
It can will be held in the stroke of very little corresponding to a special-shaped punching groove and one is equipped with the bolted position of front step
The power being hit is increased to the energy-absorbing piece of 6000N or more, and energy-absorbing piece is made of first line of a couplet portion, supporting part and fracture, first line of a couplet portion
For the slab construction for being welded to connect angle adjustor lower connecting plate, supporting part is an annulus knot matched with front step bolt
Structure, fracture are made of symmetrical two sections of narrowbands and connect in first line of a couplet portion with supporting part, and the surface in the middle part of each narrowband is set for one week
There is breaking groove；Former and later two bolt connecting holes in cushion side plate are respectively welded in the forward and backward nut；Front step bolt is successively
Angle adjustor lower connecting plate, energy-absorbing piece and cushion side plate are compressed and connect completion with front nut and is fixed；Backward step bolt, which passes through, to be adjusted
Angle device lower connecting plate is fixedly connected with the back nut for being welded on cushion side plate.
2. a kind of mechanism of backrest energy-absorbing according to claim 1, characterized in that the change width section of the punching groove
For 12mm~13mm, the width of punching groove is less than the diameter of the straight bar section of front step bolt, and with impact stroke difference, gradually becomes
It is small or by waveform rule change.
3. a kind of mechanism of backrest energy-absorbing according to claim 1 or 2, characterized in that the cross-sectional area of fracture, i.e., it is narrow
Taking and being equipped with the cross-sectional area of fracture groove location is 9.5~12.5mm2。
4. a kind of mechanism of backrest energy-absorbing according to claim 3, characterized in that the section configuration of breaking groove is V-type, slot
There is arc transition at bottom.
5. a kind of mechanism of backrest energy-absorbing according to claim 4, characterized in that the impact of fracture under normal temperature conditions
Toughness value ɑKCause the ballistic work injured obviously or to a certain degree divided by fracture about to neck equal to or slightly less than medicine
The resulting value of position cross-sectional area, unit N-m/mm2, the ballistic work is to pass through the energy that vehicle body is transferred to backrest
Magnitude, the impact energy values specifically transmitted by the front step bolt.
6. a kind of mechanism of backrest energy-absorbing according to claim 5, characterized in that mechanism is relative at left and right sides of seat
It is symmetrical arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821678992.3U CN209063938U (en) | 2018-10-17 | 2018-10-17 | A kind of mechanism of backrest energy-absorbing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821678992.3U CN209063938U (en) | 2018-10-17 | 2018-10-17 | A kind of mechanism of backrest energy-absorbing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209063938U true CN209063938U (en) | 2019-07-05 |
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ID=67095052
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821678992.3U Active CN209063938U (en) | 2018-10-17 | 2018-10-17 | A kind of mechanism of backrest energy-absorbing |
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| Country | Link |
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| CN (1) | CN209063938U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023178831A1 (en) * | 2022-03-21 | 2023-09-28 | 延锋国际汽车技术有限公司 | Restoration and energy absorption mechanism for seat backrest and automobile seat |
-
2018
- 2018-10-17 CN CN201821678992.3U patent/CN209063938U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023178831A1 (en) * | 2022-03-21 | 2023-09-28 | 延锋国际汽车技术有限公司 | Restoration and energy absorption mechanism for seat backrest and automobile seat |
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