CN112013209A - Adjustable fixing device for bionic micro-nano flexible touch sensor - Google Patents
Adjustable fixing device for bionic micro-nano flexible touch sensor Download PDFInfo
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- CN112013209A CN112013209A CN202010389724.5A CN202010389724A CN112013209A CN 112013209 A CN112013209 A CN 112013209A CN 202010389724 A CN202010389724 A CN 202010389724A CN 112013209 A CN112013209 A CN 112013209A
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- Prior art keywords
- bottom plate
- touch sensor
- flexible touch
- bionic micro
- fixing device
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- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 50
- 244000309464 bull Species 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims 1
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000002569 neuron Anatomy 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
The invention relates to the technical field of fixing devices, in particular to an adjustable fixing device for a bionic micro-nano flexible touch sensor, which comprises a bottom plate, wherein a groove is transversely formed in the middle of the top end of the bottom plate, a rotating rod is transversely and movably inserted in the groove, the right end of the rotating rod extends to the outside of the bottom plate through the bottom plate and is fixedly provided with a handle, the left side and the right side of the rotating rod are provided with threads in opposite directions, and threaded sliders are movably sleeved on the left side and the right side of the rotating rod respectively. Is worthy of popularization and application.
Description
Technical Field
The invention relates to the technical field of fixing devices, in particular to an adjustable fixing device for a bionic micro-nano flexible touch sensor.
Background
At present, with the improvement of science and technology and the improvement of living standard of people, a service robot is gradually merged into each field of life, is similar to a tactile neuron of a human finger, and a tactile sensor is used as a key part of the robot finger for sensing external physical information, can help the robot sense the physical characteristics of an external object in various complex environments, and can also assist a manipulator to complete expected actions. The conventional bionic micro-nano flexible touch sensor needs to be fixed when in use, cannot meet the fixation requirements of bionic micro-nano flexible touch sensors with different sizes, is poor in buffering performance, and cannot buffer force well when being impacted by external force, so that the protection capability of the bionic micro-nano flexible touch sensor is greatly reduced, and the bionic micro-nano flexible touch sensor cannot be cooled.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an adjustable fixing device for a bionic micro-nano flexible touch sensor.
In order to achieve the purpose, the invention adopts the following technical scheme:
an adjustable fixing device for a bionic micro-nano flexible touch sensor is designed, and comprises a bottom plate, wherein a groove is transversely formed in the middle of the top end of the bottom plate, a rotating rod is transversely and movably inserted in the groove, the right end of the rotating rod penetrates through the bottom plate and extends to the outside of the bottom plate to be fixedly provided with a handle, threads in opposite directions are arranged on the left side and the right side of the rotating rod, threaded sliding blocks are movably sleeved on the left side and the right side of the rotating rod respectively, a fixing frame is fixedly arranged at the top end of each threaded sliding block, threaded adjusting rods are connected to the middle parts of the front side and the rear side of the fixing frame respectively through threads, opposite ends of the two threaded adjusting rods respectively penetrate through the fixing frame and extend to the inside of the fixing frame to be fixedly provided with bearings, clamping plates are, the mounting groove is internally and fixedly provided with a first telescopic rod, and one end of the first telescopic rod, far away from the mounting groove, is fixedly connected with the clamping plate.
Preferably, the inner sides of the fixing frame and the clamping plate are both provided with anti-skidding rubber pads.
Preferably, the outer side of the threaded adjusting rod is provided with a scale bar along the axial direction of the threaded adjusting rod.
Preferably, the bottom middle part fixed mounting of bottom plate has the second telescopic link, the one end fixed mounting that the bottom plate was kept away from to the second telescopic link has the backup pad, the outside cover of second telescopic link is equipped with first spring, four spacing grooves have been seted up to the top ring array of backup pad, the spacing inslot transversely installs the gag lever post, the gag lever post is close to the one end movable sleeve of second telescopic link and is equipped with the movable block, the outside cover of gag lever post is equipped with the second spring, the both ends of second spring respectively with movable block and cell wall fixed connection, the top fixed mounting of movable block has first connecting seat, the bottom ring array fixed mounting of bottom plate has four second connecting seats, pass through connecting rod swing joint between second connecting seat and the first connecting seat that corresponds.
Preferably, the front and rear lower parts of the supporting plate are fixedly provided with fixing plates, and the middle part of the top end of each fixing plate is transversely provided with an installation long hole.
Preferably, a ratchet wheel is sleeved on the left side of the handle, and a pawl meshed with the ratchet wheel is movably mounted on the upper portion of the right side of the bottom plate through a fixing rod.
Preferably, the front side and the rear side of the top end of the bottom plate are both provided with mounting holes, and cooling fins are fixedly mounted in the mounting holes.
The adjustable fixing device for the bionic micro-nano flexible touch sensor has the beneficial effects that: when the bionic micro-nano flexible touch sensor is used, the bionic micro-nano flexible touch sensor is placed on the upper surface of the bottom plate, the clockwise hand-operated handle drives the rotating rod to rotate clockwise, at the moment, the two threaded sliding blocks move along the rotating rod in a mutually approaching mode so as to drive the two fixing frames to move in a mutually approaching mode, the left side and the right side of the bionic micro-nano flexible touch sensor are clamped and fixed, the anticlockwise hand-operated handle drives the rotating rod to rotate anticlockwise so as to enable the two threaded sliding blocks to move along the rotating rod in a mutually departing mode so as to drive the two fixing frames to move in a mutually departing mode, the distance between the two fixing frames can be adjusted according to the size of the bionic micro-nano flexible touch sensor to be fixed so as to clamp the bionic micro-nano flexible touch sensors with different sizes, and after the left side and the right, the opposite ends of the two thread adjusting rods move close to each other, so as to drive the bearings connected with each other to be close to each other and further drive the connected clamping plates to be close to each other to clamp and fix the front side and the rear side of the bionic micro-nano flexible touch sensor, when the clamping plates are close to each other, the first telescopic rod can extend and limit the clamping plates to prevent the clamping plates from rotating, and the two clamping plates on the other fixing frame are adjusted in the same way, so that the whole bionic micro-nano flexible touch sensor is clamped and fixed, the distance between the two clamping plates can be adjusted by rotating the two thread adjusting rods anticlockwise so that the two clamping plates are mutually far away to adapt to the clamping and fixing of the bionic micro-nano flexible touch sensor with different sizes, the bionic micro-nano flexible touch sensor is clamped and fixed in the front, the back, the left and the right, so that the fixation is more stable; when the bottom plate receives external force striking, compress first spring when compressing the second telescopic link, the second telescopic link prevents that the slope condition from appearing guaranteeing the level of bottom plate and can prevent that first spring from taking place the bending, first spring receives the compression and appears deformation production and the external force opposite direction's power and come to cushion, meanwhile the bottom plate passes through the second connecting seat, the connecting rod, first connecting seat is supporting the movable block and is compressing the second spring along the direction motion of gag lever post to keeping away from the second telescopic link, the second spring receives the compression and appears deformation and produce the power that the restriction movable block continues to move and hinder the motion of movable block, thereby cushion external force, make the cushioning of device promote greatly. The bionic micro-nano flexible touch sensor fixing device is simple in structure and easy and convenient to operate, can meet the requirements of fixing the bionic micro-nano flexible touch sensors with different sizes, is firmer in fixing due to clamping and fixing of the four sides of the bionic micro-nano flexible touch sensor, is good in buffering performance, can well protect the bionic micro-nano flexible touch sensor, can dissipate heat of the bionic micro-nano flexible touch sensor through the arrangement of the radiating fins, avoids overheating and burnout, protects the bionic micro-nano flexible touch sensor, and is worthy of popularization and use.
Drawings
FIG. 1 is a schematic structural view of an adjustable fixing device for a bionic micro-nano flexible touch sensor, which is provided by the invention;
FIG. 2 is a schematic view of a top view structure of an adjustable fixing device for a bionic micro-nano flexible touch sensor, which is provided by the invention;
FIG. 3 is a left-side view structural schematic diagram of a fixing device for an adjustable bionic micro-nano flexible touch sensor, which is provided by the invention;
FIG. 4 is an enlarged schematic view of FIG. 2A according to the present invention;
FIG. 5 is an enlarged schematic view of FIG. 3B according to the present invention;
FIG. 6 is an enlarged schematic view of FIG. 1C according to the present invention;
FIG. 7 is an enlarged schematic view of FIG. 2D according to the present invention;
fig. 8 is a front view of an adjustable fixing device for a bionic micro-nano flexible touch sensor provided by the invention.
In the figure: the clamping device comprises a bottom plate 1, a groove 2, a rotating rod 3, a handle 4, a threaded sliding block 5, a fixing frame 6, a threaded adjusting rod 7, a bearing 8, a clamping plate 9, a mounting groove 10, a first telescopic rod 11, an anti-skidding rubber pad 12, a scale bar 13, a second telescopic rod 14, a supporting plate 15, a first spring 16, a limiting groove 17, a limiting rod 18, a moving block 19, a second spring 20, a first connecting seat 21, a second connecting seat 22, a connecting rod 23, a fixing plate 24, a mounting long hole 25, a ratchet 26, a fixing rod 27, a pawl 28, a mounting hole 29 and cooling fins 30.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-8, an adjustable fixing device for a bionic micro-nano flexible touch sensor comprises a base plate 1, mounting holes 29 are formed in the front side and the rear side of the top end of the base plate 1, cooling fins 30 are fixedly mounted in the mounting holes 29, and the cooling fins 30 can absorb heat generated by the bionic micro-nano flexible touch sensor in work, protect the bionic micro-nano flexible touch sensor and prevent the bionic micro-nano flexible touch sensor from being burnt by overheating.
A first spring 16 is sleeved outside the second telescopic rod 14, four limiting grooves 17 are formed in the top end annular array of the supporting plate 15, a limiting rod 18 is transversely installed in each limiting groove 17, a moving block 19 is movably sleeved at one end, close to the second telescopic rod 14, of each limiting rod 18, a second spring 20 is sleeved outside each limiting rod 18, two ends of each second spring 20 are fixedly connected with the corresponding moving block 19 and the corresponding groove wall respectively, a first connecting seat 21 is fixedly installed at the top end of each moving block 19, four second connecting seats 22 are fixedly installed at the bottom end annular array of the bottom plate 1, each second connecting seat 22 is movably connected with the corresponding first connecting seat 21 through a connecting rod 23, when the bottom plate 1 is impacted by external force, the first springs 16 are compressed while the second telescopic rods 14 are compressed, the second telescopic rods 14 prevent the bottom plate 1 from being inclined, ensure that the bottom plate 1 is horizontal and prevent the first springs 16 from being, first spring 16 receives the compression and appears deformation and produce and come to cushion external force with the opposite direction's of external force power, meanwhile bottom plate 1 compresses second spring 20 along the direction motion of gag lever post 18 to keeping away from second telescopic link 14 along movable block 19 through second connecting seat 22, connecting rod 23, first connecting seat 21, second spring 20 receives the compression and appears deformation and produce the power that restriction movable block 19 continues to move and hinder the motion of movable block 19, thereby cushion external force, make the cushioning nature of device promote greatly.
The rotating rod 3 is transversely movably inserted in the groove 2, the right end of the rotating rod 3 penetrates through the bottom plate 1 and extends to the outside of the bottom plate 1, the handle 4 is fixedly installed on the handle, the ratchet wheel 26 is sleeved on the left side of the handle 4, the pawl 28 meshed with the ratchet wheel 26 is movably installed on the upper portion of the right side of the bottom plate 1 through the fixing rod 27, the rotating direction of the rotating rod 3 can be limited through the matching of the ratchet wheel 26 and the pawl 28, the rotating rod can only rotate towards the fixed direction in a natural state, and the stability of the device after the bionic micro-nano flexible touch sensor is fixed is improved.
The left and right sides of bull stick 3 is equipped with opposite direction's screw thread, the equal movable sleeve in left and right sides of bull stick 3 is equipped with screw slider 5, because the screw thread opposite direction of the position that two screw slider 5 located when rotating bull stick 3, consequently, two screw slider 5 can be along bull stick 3 and do the motion of being close to each other or keeping away from each other, screw slider 5's top fixed mounting has mount 6, the equal threaded connection in middle part of both sides has screw thread adjusting rod 7 around mount 6, screw thread adjusting rod 7's the outside is equipped with scale bar 13 along its axial, can guarantee through observing scale bar 13 that the progress that every screw thread adjusting rod 7 was adjusted is unanimous.
The relative one end of two screw thread adjusting rods 7 all passes mount 6 and extends to its inside fixed mounting have a bearing 8, and the one end fixed mounting that screw thread adjusting rod 7 was kept away from to bearing 8 has splint 9, and mount 6 all is equipped with anti-skidding rubber pad 12 with the inboard of splint 9, increases on the one hand and the bionical flexible touch sensor contact surface that receives a little that receives fixed frictional force for the centre gripping is fixed more stable, and on the other hand reduces and bionical flexible touch sensor that receives a little between the wearing and tearing protection of receiving a little flexible touch sensor.
The working principle is as follows: when the bionic micro-nano flexible touch sensor is used, the bionic micro-nano flexible touch sensor is placed on the upper surface of the bottom plate 1, the rotating rod 3 is driven to rotate clockwise by the clockwise hand-cranking handle 4, the two threaded sliders 5 move close to each other along the rotating rod 3 at the moment, so that the two fixing frames 6 move close to each other, the left side and the right side of the bionic micro-nano flexible touch sensor are clamped and fixed, the rotating rod 3 is driven to rotate anticlockwise by the anticlockwise hand-cranking handle 4, so that the two threaded sliders 5 move away from each other along the rotating rod 3, so that the two fixing frames 6 move away from each other, the distance between the two fixing frames 6 can be adjusted according to the size of the bionic micro-nano flexible touch sensor to be fixed to clamp the bionic micro-nano flexible touch sensors with different sizes, after the left side and the right side are fixed, the two thread adjusting rods 7 positioned on, the opposite ends of the two thread adjusting rods 7 move close to each other, so as to drive the bearings 8 connected with each other to close to each other and further drive the clamping plates 9 connected with each other to close to each other to clamp and fix the front side and the rear side of the bionic micro-nano flexible touch sensor, when the clamping plates 9 approach each other, the first telescopic rod 11 can extend and limit the clamping plates 9 to prevent the clamping plates 9 from rotating, and similarly, the two clamping plates 9 on the other fixing frame 6 are adjusted to complete the clamping and fixing of the whole bionic micro-nano flexible touch sensor, the distance between the two clamping plates 9 can be adjusted by rotating the two thread adjusting rods 7 anticlockwise so that the two clamping plates 9 are far away from each other to adapt to the clamping and fixing of the bionic micro-nano flexible touch sensors with different sizes, the bionic micro-nano flexible touch sensor is clamped and fixed in the front, the back, the left and the right, so that the fixation is more stable; when the bottom plate 1 receives external force striking, compress first spring 16 when compressing second telescopic link 14, second telescopic link 14 prevents that the slope condition from appearing in bottom plate 1 and guaranteeing the level of bottom plate 1 and can prevent that first spring 16 from taking place the bending, first spring 16 receives the compression and appears deformation and produce and cushion external force with the power of external force opposite direction, meanwhile bottom plate 1 is through second connecting seat 22, connecting rod 23, first connecting seat 21 supports movable block 19 along gag lever post 18 to the direction motion of keeping away from second telescopic link 14 and compresses second spring 20, second spring 20 receives the compression and appears deformation and produce the power that restriction movable block 19 continues to move and hinder the motion of movable block 19, thereby cushion external force, make the cushioning nature of device promote greatly.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The utility model provides a fixing device for flexible tactile sensor is received to bionical declining with adjustable, includes bottom plate (1), its characterized in that, the top middle part of bottom plate (1) transversely sets up recess (2), horizontal activity interlude has bull stick (3) in recess (2), the right-hand member of bull stick (3) passes bottom plate (1) and extends to its outside fixed mounting and has handle (4), the left and right sides of bull stick (3) is equipped with opposite direction's screw thread, the equal movable sleeve in left and right sides of bull stick (3) is equipped with screw slider (5), the top fixed mounting of screw slider (5) has mount (6), the equal threaded connection in middle part of both sides has screw thread adjusting rod (7) around mount (6), two the relative one end of screw thread adjusting rod (7) all passes mount (6) and extends to its inside fixed mounting have bearing (8), bearing (8) keep away from the one end fixed mounting of screw thread regulation pole (7) has splint (9), mounting groove (10) have all been seted up to the left and right sides that both sides inner wall just is located screw thread regulation pole (7) around mount (6), fixed mounting has first telescopic link (11) in mounting groove (10), the one end and splint (9) fixed connection of mounting groove (10) are kept away from in first telescopic link (11).
2. The adjustable fixing device for the bionic micro-nano flexible touch sensor according to claim 1, wherein anti-skid rubber pads (12) are arranged on the inner sides of the fixing frame (6) and the clamping plate (9).
3. The adjustable fixing device for the bionic micro-nano flexible touch sensor according to claim 1, wherein scale strips (13) are arranged on the outer side of the threaded adjusting rod (7) along the axial direction of the threaded adjusting rod.
4. The adjustable fixing device for the bionic micro-nano flexible tactile sensor, according to claim 1, characterized in that a second telescopic rod (14) is fixedly installed in the middle of the bottom end of the bottom plate (1), a support plate (15) is fixedly installed at one end, far away from the bottom plate (1), of the second telescopic rod (14), a first spring (16) is sleeved outside the second telescopic rod (14), four limit grooves (17) are formed in the top end of the support plate (15) in an annular array manner, a limit rod (18) is transversely installed in each limit groove (17), a moving block (19) is movably sleeved at one end, close to the second telescopic rod (14), of each limit rod (18), a second spring (20) is sleeved outside each limit rod (18), two ends of each second spring (20) are respectively fixedly connected with the moving block (19) and a groove wall, and a first connecting seat (21) is fixedly installed at the top end of each moving block (19), four second connecting seats (22) are fixedly arranged at the bottom end of the bottom plate (1) in an annular array mode, and the second connecting seats (22) are movably connected with the corresponding first connecting seats (21) through connecting rods (23).
5. The adjustable fixing device for the bionic micro-nano flexible touch sensor is characterized in that fixing plates (24) are fixedly mounted at the lower parts of the front side and the rear side of the supporting plate (15), and a mounting long hole (25) is transversely formed in the middle of the top end of each fixing plate (24).
6. The adjustable fixing device for the bionic micro-nano flexible touch sensor according to claim 1, wherein a ratchet wheel (26) is sleeved on the left side of the handle (4), and a pawl (28) meshed with the ratchet wheel (26) is movably mounted on the upper portion of the right side of the bottom plate (1) through a fixing rod (27).
7. The adjustable fixing device for the bionic micro-nano flexible touch sensor according to claim 1, wherein mounting holes (29) are formed in the front side and the rear side of the top end of the bottom plate (1), and cooling fins (30) are fixedly mounted in the mounting holes (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010389724.5A CN112013209A (en) | 2020-04-29 | 2020-04-29 | Adjustable fixing device for bionic micro-nano flexible touch sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010389724.5A CN112013209A (en) | 2020-04-29 | 2020-04-29 | Adjustable fixing device for bionic micro-nano flexible touch sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112013209A true CN112013209A (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010389724.5A Pending CN112013209A (en) | 2020-04-29 | 2020-04-29 | Adjustable fixing device for bionic micro-nano flexible touch sensor |
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| CN (1) | CN112013209A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728315A (en) * | 2020-12-24 | 2021-04-30 | 河南泉舜工程有限公司 | Electromechanical mounting bracket with shock-absorbing structure |
| CN113074299A (en) * | 2021-03-24 | 2021-07-06 | 无锡工艺职业技术学院 | Ceramic machine base with shock attenuation buffer function |
-
2020
- 2020-04-29 CN CN202010389724.5A patent/CN112013209A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728315A (en) * | 2020-12-24 | 2021-04-30 | 河南泉舜工程有限公司 | Electromechanical mounting bracket with shock-absorbing structure |
| CN113074299A (en) * | 2021-03-24 | 2021-07-06 | 无锡工艺职业技术学院 | Ceramic machine base with shock attenuation buffer function |
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