CN211223886U - Light variable load seat energy-absorbing device - Google Patents
Light variable load seat energy-absorbing device Download PDFInfo
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- CN211223886U CN211223886U CN201921983619.3U CN201921983619U CN211223886U CN 211223886 U CN211223886 U CN 211223886U CN 201921983619 U CN201921983619 U CN 201921983619U CN 211223886 U CN211223886 U CN 211223886U
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Abstract
The utility model discloses a light variable load seat energy absorption device, which comprises a steel wire, a wire bending component, a connecting component and a shearing component; the steel wire is a vertical energy absorption part; the wire bending assembly and the movable part of the seat are connected with a fixed steel wire, the fixed steel wire penetrates through a shell of the wire bending assembly, a bending section is arranged in the shell, a guide wheel and an adjusting mechanism are arranged on the shell of the wire bending assembly, the guide wheel is positioned at two ends of the bending section of the steel wire and clamped at two sides of the steel wire, the adjusting mechanism comprises a supporting wheel which is propped against a groove of the bending section of the steel wire, and the adjusting mechanism can adjust the propping distance of the supporting wheel so as to adjust the bending degree of the bending section of; the two connecting assemblies are fixedly connected with the fixed part of the seat and are respectively fixedly connected with the two ends of the steel wire; the shearing part is simultaneously connected and fixed with the connecting component and the wire bending component on the upper part, and the shearing part is broken when the impact acceleration exceeds a certain degree. The device has the advantages of reliable start, variable load function, light weight, low cost and wide application range.
Description
Technical Field
The utility model relates to an energy-absorbing device, concretely relates to light-duty becomes to carry seat energy-absorbing device.
Background
Seat energy absorption devices, especially helicopter seat energy absorption devices, are used as parts which are in direct contact with pilots and passengers, have higher and higher requirements on the seat energy absorption devices, not only have light weight, but also provide the same protection for the passengers in different percentiles, so that variable load energy absorption technology is developed at the same time, and the starting load of the energy absorption devices can be adjusted according to the weights of the passengers. The existing variable-load energy absorption device adopts a mode of matching a reverse pull pipe and a rolled pipe, realizes variable-load energy absorption, and has the defects of heavy weight, complex processing technology (complex manufacturing technology of the reverse pull pipe and the rolled pipe, high processing cost), unreliable work and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a light-duty becomes to carry seat energy-absorbing device, the device start-up is reliable, has to become to carry the function, light in weight, and is with low costs, and application scope is wide.
The utility model adopts the technical proposal that: a light variable load seat energy absorption device comprises a steel wire, a wire bending assembly, a connecting assembly and a shearing member; the steel wire is a vertical energy absorption part; the wire bending assembly is fixedly connected with the movable part of the seat, the steel wire penetrates through the shell of the wire bending assembly, the part in the shell is provided with a bending section, the shell of the wire bending assembly is provided with a guide wheel and an adjusting mechanism, the guide wheel is positioned at two ends of the bending section of the steel wire and clamped at two sides of the steel wire, the adjusting mechanism comprises a supporting wheel which is propped against the groove of the bending section of the steel wire, and the adjusting mechanism can adjust the propping distance of the supporting wheel so as to adjust the bending degree of the bending section of the steel wire; the two connecting assemblies are fixedly connected with the fixed part of the seat and are respectively fixedly connected with the two ends of the steel wire; the shearing part is simultaneously connected and fixed with the connecting component and the wire bending component on the upper part, and the shearing part is broken when the impact acceleration exceeds a certain degree.
Furthermore, the adjusting mechanism further comprises an adjusting nut fixedly connected with the shell of the wire bending assembly, an adjusting rod matched with the adjusting nut, a U-shaped piece for installing the supporting wheel through a U-shaped groove, and a guide structure on the shell of the wire bending assembly, wherein one end, far away from the supporting wheel, of the U-shaped piece is connected with the top end of the adjusting rod, and the adjusting rod can drive the U-shaped piece to advance along the guide structure so as to adjust the ejection distance of the supporting wheel.
Furthermore, positioning grooves are uniformly distributed in the circumferential direction of the adjusting rod, positioning beads are fixedly arranged on a shell of the wire bending assembly, and the top ends of the positioning beads are matched and propped in the positioning grooves.
Furthermore, an indication rod is arranged on the U-shaped part, a long hole is formed in the shell of the wire bending component, the indication rod penetrates out of the shell of the wire bending component through the long hole and can move along the long hole, scribed lines are arranged on the indication rod, a graduated scale is arranged along the long hole, and the distance of the scribed lines aligned to the graduated scale reflects the ejection degree of the supporting wheel.
Further, the lead angle between the adjusting rod and the adjusting nut is not more than 2.5 degrees.
Further, coupling assembling main part is the connecting block, is equipped with the screw on the connecting block, erects the groove and respectively with the cushion hole and the briquetting hole of erecting the groove intercommunication, and the steel wire penetrates perpendicular groove, and cushion and briquetting have been put to downthehole interpolation respectively of cushion hole and briquetting, compress tightly the steel wire on the cushion through the briquetting when the screw top is tight, and the recess is all established to the steel wire both sides, cushion and briquetting respectively with the recess cooperation of steel wire both sides.
Further, the shearing part is provided with a shearing groove, and when the impact acceleration exceeds 6g, the shearing part breaks at the position of the shearing groove.
Further, the guide wheel and the support wheel both adopt cylindrical roller bearings.
The utility model has the advantages that: the device is reliable to start, the steel wire is provided with the bending section, so that the energy absorption device cannot be started due to the fact that loads of the shearing piece and the steel wire are overlapped when the energy absorption device is started, and the shearing piece can prevent the steel wire from being subjected to cold hardening in the vibration process, so that the energy absorption load is raised and cannot be started; the device adjusts the bending degree of the bent section of the steel wire through the adjusting mechanism, has a load changing function, can adjust starting load according to the weight of passengers, provides optimal protection for passengers in different percentiles, namely, provides optimal protection for passengers from 95 th percentile male passengers to 5 th percentile female passengers, enables the passengers to move downwards at a deceleration not more than 14.5G, and ensures that the overload borne by all the passengers does not exceed the tolerance limit of a human body; the device absorbs energy through the steel wire, has light weight, can be repeatedly used after replacing the steel wire, and has low cost; the device can be widely used for helicopter crash-resistant seats and vehicle lightning protection seats, and has wide application range.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the connection assembly in the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a wire bending assembly according to an embodiment of the present invention.
Fig. 4 is an exploded view of the structure of the wire bending assembly according to the embodiment of the present invention.
Fig. 5 is a schematic view of a support plate of the wire bending assembly according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of an adjusting mechanism of the wire bending assembly according to an embodiment of the present invention.
Fig. 7 is an exploded view of an adjusting mechanism of the wire bending assembly according to an embodiment of the present invention.
Fig. 8 is a schematic diagram of the positioning bead positioning of the wire bending assembly according to the embodiment of the present invention.
In the figure:
1-connecting component, 101-connecting block, 101 a-vertical groove, 101 b-pressing block hole, 101 c-cushion block hole, 104-screw, 105-pressing block and 106-cushion block;
2-wire bending component, 201-supporting plate, 201 a-graduated scale, 201 b-U-shaped boss, 201 c-strip-shaped boss, 201 d-large boss, 201 e-small boss, 201 f-threaded hole, 201 g-long hole, 201 h-through hole, 201 j-through hole, 2011-supporting plate, 202-backing plate, 203-clapboard, 205-clamp spring, 207-cylindrical pin, 208-screw, 209-self-locking nut, 211-guide wheel, 212-cylindrical cushion block, 213-spring cushion, 214 flat cushion, 260-adjusting mechanism, 261-adjusting rod, 261 a-inner hexagonal hole, 261 b-positioning groove, 261 c-screw, 261 d-boss, 261 e-annular groove, 262-adjusting nut, 263-U-shaped piece, 263 a-through hole, 263 b-blind hole, 263 c-through hole, 264-supporting wheel, 265-cylindrical pin, 266-indicating rod, 266 a-scribed line, 267-snap spring, 268-gasket and 270-positioning bead;
3-steel wire, 3 a-groove and 3 b-bending section;
4-a shearing piece, 4 a-a shearing groove, 4 b-a cylindrical boss and 4 c-a through hole;
5-screw.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in figure 1, the light variable load seat energy absorption device comprises a connecting assembly 1, a wire bending assembly 2, a steel wire 3 and a shearing member 4. The connecting assembly 1 is connected with a fixed part of the seat; the wire bending component 2 is connected with the movable part of the seat; the steel wire 3 is an energy absorption part; the cutting member 4 is connected between the upper connecting component 1 and the wire bending component 2, and the cutting member 4 and the upper connecting component 1 are fixed by using a screw 5.
As shown in fig. 2, the connecting assembly 1 includes a connecting block 101, a screw 104, a pressing block 105, and a spacer 106. A vertical groove 101a, a pressing block hole 101b and a cushion block hole 101c are formed in the connecting block 101; the steel wire 3 penetrates into the vertical groove 101 a; the cushion block 106 is arranged in the cushion block hole 101c and plays a role of supporting the steel wire 3; the pressing block 105 is installed inside the pressing block hole 101 b; the screw 104 acts as a jack for the press block 105, thereby fixing the wire 3.
As shown in fig. 2, the shear member 4 is provided with a shear groove 4a, when the impact acceleration exceeds 6g, the shear member 4 is broken at the position of the shear groove 4a, which acts as a fixing function for the movable part of the seat in the normal use process of the seat, and prevents the steel wire 3 (energy-absorbing structural member) from generating cold hardening in the vibration process, so that the energy-absorbing load is raised and cannot be started.
As shown in fig. 3, both sides of the steel wire 3 are provided with grooves, which are matched with the pressing block 105 and the cushion block 106 of the connecting assembly 1, so that the locking force of the steel wire is increased, and the steel wire is prevented from slipping out of the connecting assembly 1. As shown in figure 4, the steel wire 3 is provided with a bending section, so that the load superposition of the shearing part 4 and the steel wire 3 when the energy absorber is started is prevented, and the energy absorber cannot be started.
As shown in fig. 3 and 4, the wire bending assembly 2 includes a support plate 201, a support plate 2011, a backing plate 202, a partition plate 203, a clamp spring 205, a cylindrical pin 207, a screw 208, a self-locking nut 209, a guide wheel 211, a cylindrical cushion block 212, a spring washer 213, a flat washer 214, an adjusting mechanism 260, and a positioning ball 270. The backing plate 202 has 2 pieces in total and is positioned between the supporting plate 201 and the supporting plate 2011; the spacers 203 are located between 2 backing plates 202; the adjustment mechanism 260 is located between the support plate 201 and the support plate 2011; the cylindrical pin 207 and the screw 208 penetrate through the support plate 201, the backing plate 202, the partition plate 203 and the support plate 2011 to be matched with the snap spring 205, the self-locking nut 209, the spring gasket 213 and the flat gasket 214 to play a connecting role; the cylindrical cushion block 212 penetrates through the partition plate 203 and is positioned between the 2 backing plates 202 to play a role of supporting the backing plates 202; the positioning beads 270 are mounted on the support plate 201; the guide wheels 211 are 4 in total.
As shown in fig. 4 and 5, the support plate 201 is provided with a scale 201a, a U-shaped boss 201b, a bar-shaped boss 201c, a large boss 201d, a small boss 201e, a screw hole 201f, a long hole 201g, a through hole 201h, and a through hole 201 j. The graduated scale 201a plays a role in adjusting and indicating the starting load of the energy absorption device; the U-shaped boss 201b plays a role of guiding and supporting the backing plate 202 for the adjusting mechanism 260; the strip-shaped boss 201c plays a role of supporting the backing plate 202; the large boss 201d and the small boss 201e play a role of fixing the adjusting mechanism 260; the threaded hole 201f functions as a fixing positioning ball; elongated hole 201g for indicating rod 266 to pass through; the through hole 201h is used for the screw 208 to pass through; the through hole 201j is for the cylindrical pin 207 to pass through.
As shown in fig. 6 and 7, the adjusting mechanism 260 includes an adjusting rod 261, an adjusting nut 262, a U-shaped member 263, a supporting wheel 264, a cylindrical pin 265, an indicating rod 266, a snap spring 267 and a spacer 268. The adjusting nut 262 is arranged on the adjusting rod 261 to form a thread pair; the U-shaped part 263 is sleeved on the boss 261d of the adjusting rod 261 and is fixed by a clamp spring 267; pads 268 are positioned on both sides of the support wheel 264, mounted in the U-shaped member 263 and fixed by a cylindrical pin 265; indicator rod 266 is mounted in blind hole 263b in the side of U-shaped member 263; the indicating rod 266 is provided with a scribed line 266a to facilitate the adjustment of the starting load of the energy absorbing device. The adjustment rod 261 is provided with an internal hexagonal hole 261a, a positioning groove 261b, a thread 261c, a boss 261d, and a ring groove 261 e. By rotating the adjusting rod 261, the position of the supporting wheel 264 can be adjusted, thereby achieving the effect of adjusting the starting load of the energy absorption device.
In this embodiment, the lead angle of the thread 261c should be no greater than 2.5 °; the guide wheel 211 and the support wheel 264 adopt cylindrical roller bearings, and have the characteristics of strong bearing capacity and low friction coefficient.
As shown in fig. 8, the positioning ball 270 includes a steel ball, a spring, and a housing. The positioning beads can prevent the adjusting rod from loosening in a vibration environment.
The device is generally used for helicopter crash-resistant seats, and can also be used for vehicle lightning protection seats or other seats, and the application range is wide.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (8)
1. The utility model provides a light-duty becomes to carry seat energy-absorbing device which characterized in that: comprises a steel wire (3), a wire bending component (2), a connecting component (1) and a shearing component (4); the steel wire (3) is a vertical energy absorption part; the wire bending assembly (2) is fixedly connected with a movable part of the seat, the steel wire (3) penetrates through a shell of the wire bending assembly (2), a bending section (3b) is arranged in the shell, a guide wheel and an adjusting mechanism are arranged on the shell of the wire bending assembly (2), the guide wheel is positioned at two ends of the bending section of the steel wire and clamped at two sides of the steel wire, the adjusting mechanism comprises a supporting wheel which is propped against a groove of the bending section of the steel wire, and the adjusting mechanism can adjust the propping distance of the supporting wheel so as to adjust the bending degree of the bending section of the steel wire; the two connecting assemblies are fixedly connected with the fixed part of the seat and are respectively fixedly connected with the two ends of the steel wire; the shearing part is simultaneously connected and fixed with the connecting component and the wire bending component on the upper part, and the shearing part is broken when the impact acceleration exceeds a certain degree.
2. A light weight variable load seat energy absorber as claimed in claim 1 wherein: the adjusting mechanism further comprises an adjusting nut fixedly connected with the shell of the wire bending assembly, an adjusting rod matched with the adjusting nut, a U-shaped piece for installing the supporting wheel through a U-shaped groove, and a guide structure on the shell of the wire bending assembly, wherein one end, far away from the supporting wheel, of the U-shaped piece is connected with the top end of the adjusting rod, and the adjusting rod can drive the U-shaped piece to move forward along the guide structure so as to adjust the ejection distance of the supporting wheel.
3. A light weight variable load seat energy absorber as claimed in claim 2 wherein: the adjusting rod is circumferentially and uniformly provided with positioning grooves, positioning beads are fixedly arranged on a shell of the bent wire assembly, and the top ends of the positioning beads are matched and propped in the positioning grooves.
4. A light weight variable load seat energy absorber as claimed in claim 2 wherein: the U-shaped part is provided with an indicating rod, the shell of the wire bending component is provided with a long hole, the indicating rod penetrates out of the shell of the wire bending component through the long hole and can move along the long hole, the indicating rod is provided with a scribed line, the long hole is provided with a graduated scale along the line, and the distance of the scribed line aligning to the graduated scale reflects the ejection degree of the supporting wheel.
5. A light weight variable load seat energy absorber as claimed in claim 2 wherein: the lead angle of the thread between the adjusting rod and the adjusting nut is not more than 2.5 degrees.
6. A light weight variable load seat energy absorber as claimed in claim 1 wherein: the coupling assembling main part is the connecting block, is equipped with screw, perpendicular groove on the connecting block and respectively with the cushion hole and the briquetting hole of perpendicular groove intercommunication, and the steel wire penetrates perpendicular groove, and cushion and briquetting have been inserted respectively in cushion hole and the briquetting hole, compress tightly the steel wire on the cushion through the briquetting when the screw top is tight, and the recess is all established to the steel wire both sides, cushion and briquetting respectively with the recess cooperation of steel wire both sides.
7. A light weight variable load seat energy absorber as claimed in claim 1 wherein: the shearing piece is provided with a shearing groove, and when the impact acceleration exceeds 6g, the shearing piece is broken at the position of the shearing groove.
8. A light weight variable load seat energy absorber as claimed in claim 1 wherein: the guide wheel and the supporting wheel are both cylindrical roller bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921983619.3U CN211223886U (en) | 2019-11-15 | 2019-11-15 | Light variable load seat energy-absorbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921983619.3U CN211223886U (en) | 2019-11-15 | 2019-11-15 | Light variable load seat energy-absorbing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211223886U true CN211223886U (en) | 2020-08-11 |
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ID=71936787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921983619.3U Active CN211223886U (en) | 2019-11-15 | 2019-11-15 | Light variable load seat energy-absorbing device |
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| Country | Link |
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| CN (1) | CN211223886U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562179A (en) * | 2021-08-30 | 2021-10-29 | 航宇救生装备有限公司 | Crash-resistant seat employing extruded tube energy absorber |
-
2019
- 2019-11-15 CN CN201921983619.3U patent/CN211223886U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562179A (en) * | 2021-08-30 | 2021-10-29 | 航宇救生装备有限公司 | Crash-resistant seat employing extruded tube energy absorber |
| CN113562179B (en) * | 2021-08-30 | 2023-10-27 | 航宇救生装备有限公司 | Crash-resistant seat using extruded tube energy absorber |
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