CN115675352A - Safety belt pretension end piece and car - Google Patents
Safety belt pretension end piece and car Download PDFInfo
- Publication number
- CN115675352A CN115675352A CN202211454766.8A CN202211454766A CN115675352A CN 115675352 A CN115675352 A CN 115675352A CN 202211454766 A CN202211454766 A CN 202211454766A CN 115675352 A CN115675352 A CN 115675352A
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- spring
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 64
- 239000010959 steel Substances 0.000 claims abstract description 64
- 238000010521 absorption reaction Methods 0.000 claims abstract description 10
- 238000012423 maintenance Methods 0.000 description 4
- 239000012634 fragment Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000036544 posture Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Clamps And Clips (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
The invention relates to a safety belt pre-tightening end piece and an automobile, wherein the safety belt pre-tightening end piece comprises a shell, an end piece body and a steel plate elastic piece assembly, the steel plate elastic piece assembly is arranged in the shell, the end piece body part is arranged in the shell, an inserting piece hole is formed in the bottom of the shell, an unlocking hole is formed in the outer part of the shell, the inserting piece is inserted into the inserting piece hole and sequentially extrudes a lower spring clamping piece on the front side of a steel plate elastic piece body in the steel plate elastic piece assembly and an independent lock pin in the steel plate elastic piece assembly, an energy absorption elastic piece on the back side of the steel plate elastic piece body is contracted under stress until the inserting piece is completely matched with the independent lock pin, the energy absorption elastic piece drives the independent lock pin to reset, the inserting piece is matched with the safety belt pre-tightening end piece, only a small square object needs to be inserted into the unlocking hole to pull out the inserting piece during the disassembly, the safety belt pre-tightening end piece is quick to be assembled with a pre-tightened by the inserting piece, the safety belt pre-tightening end piece is quick and quick to be quickly disassembled.
Description
Technical Field
The invention relates to the technical field of automobile safety belt pre-tightening end pieces, in particular to a safety belt pre-tightening end piece and an automobile.
Background
In order to meet the increasing national and international finished automobile collision safety NCAP regulations, more and more automobile types select to bring safety belt end piece pretensioners into the whole automobile configuration, so that passengers can be effectively restrained on seats in correct sitting postures during collision, and the injury probability of the passengers is reduced to the maximum extent. The seat belt pre-tightening end plate is a component for connecting the end plate pre-tightening device and the seat belt webbing, and the webbing end plate and the pre-tightening device are fixed together by bolts or connected with the seat belt assembly into a whole by a webbing folding seam mode in the prior industry. Both of these forms have the disadvantages of difficult arrangement, complex assembly and poor maintenance convenience.
Disclosure of Invention
Therefore, the invention aims to overcome the defects of difficult arrangement, complex assembly and poor maintenance convenience of the two existing connection modes, and provides a safety belt pre-tightening end piece and an automobile.
A safety belt pre-tightening end piece comprises a shell, an end piece body and a steel plate elastic piece assembly;
the end piece body is provided with a braid seam folding hole and a connecting hole;
the steel plate elastic piece assembly comprises a steel plate elastic piece bracket, a steel plate elastic piece body and an independent lock pin;
the energy absorption type steel plate elastic piece comprises a steel plate elastic piece body and is characterized in that an unlocking pin is arranged at the top of the front side of the steel plate elastic piece body, an upper spring clamping piece, a middle spring clamping piece and a lower spring clamping piece are sequentially arranged below the unlocking pin, a steel plate elastic piece support is clamped with the upper spring clamping piece and the lower spring clamping piece, the middle spring clamping piece penetrates through the steel plate elastic piece support and is in matched connection with an independent locking pin, an unlocking pin placing hole is formed in the top of the steel plate elastic piece support, the unlocking pin penetrates through the steel plate elastic piece support and is placed in the unlocking pin placing hole, and an energy absorption elastic piece is arranged on the back of the steel plate elastic piece body;
the shell includes shell and lower shell, go up the shell and link firmly with lower shell, the bottom of shell is equipped with the inserted sheet hole, steel sheet shell fragment subassembly links firmly inside the shell, and lower part spring card one side is close to the inserted sheet hole, the energy-absorbing shell fragment at the steel sheet shell fragment body back contacts with the inner wall of last shell, be equipped with the unlocking hole down on the shell, the unblock round pin is placed the hole and is connected with the cooperation of unlocking hole, the end piece body links firmly in the inside of shell through the connecting hole part, the meshbelt is rolled over the seam hole and is connected with the meshbelt.
Furthermore, the two energy-absorbing elastic sheets are symmetrically distributed on the left side and the right side of the back of the steel plate elastic sheet body.
Furthermore, the lower spring clamping piece is E-shaped with an upward opening, and smooth bulges are arranged on three edges of the lower spring clamping piece.
Further, the thickness of the end piece body is 2mm-3mm.
Further, the edges of the folded seam holes of the woven belt are subjected to smooth treatment.
Furthermore, the thickness of the steel plate elastic sheet body is less than 1mm.
Furthermore, the middle spring clamping piece is in interference fit with the independent lock pin.
Furthermore, two sides of the unlocking pin are provided with raised edges.
Furthermore, both sides of the steel plate elastic sheet support are provided with protrusions, and the inner surfaces of the upper shell and the lower shell are provided with grooves matched with the protrusions.
An automobile comprising a seatbelt pretensioning end tab according to any of the above.
The safety belt pre-tightening end piece and the pre-tightening device inserting piece related to the technical scheme of the invention can be quickly assembled and disassembled, and are time-saving and efficient; the arrangement is flexible, the application is wide, the maintenance convenience is high, the end piece is internally provided with the steel plate elastic piece, the outside is provided with the unlocking hole, the small square object can be used for unlocking, and the manual mistaken unlocking is effectively avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of the connection of a pretensioner to a seat belt pretensioner;
FIG. 2 is a schematic front view of a pretensioned end plate of a seat belt;
FIG. 3 is a schematic view of the back side of the pretensioned seat belt end tab;
FIG. 4 is a schematic bottom view of a pretensioned end plate of the seat belt;
FIG. 5 is a schematic front view of the steel plate spring assembly;
FIG. 6 is a schematic side view of the steel plate spring assembly;
FIG. 7 is a schematic view of the structure d of the end piece body;
fig. 8 is a schematic structural view of a steel plate spring body;
FIG. 9 is a schematic view of the construction of the independent locking pin;
description of reference numerals:
1-a housing; 1-1-upper shell; 1-2-lower shell;
1-2-1-unlocking a hole; 2-end piece body; 2-1-folding and sewing holes of the woven tape;
2-2-connecting hole; 3-a steel plate spring assembly; 3-1-a steel plate spring plate support;
3-1-1-unlocking pin placing holes; 3-2-a steel plate elastic sheet body; 3-2-1-unlocking pin;
3-2-2-upper spring clip; 3-2-3-middle spring card; 3-2-4-lower spring clip;
3-2-5-energy absorbing shrapnel; 3-3-independent locking pin.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1 to 9, a seat belt pre-tightening end plate includes a housing 1, an end plate body 2 and a steel plate spring assembly 3;
the end piece body 2 is provided with a braid crease hole 2-1 and a connecting hole 2-2;
the steel plate elastic piece assembly 3 comprises a steel plate elastic piece bracket 3-1, a steel plate elastic piece body 3-2 and an independent lock pin 3-3;
the top of the front side of the steel plate elastic piece body 3-2 is provided with an unlocking pin 3-2-1, an upper spring card 3-2-2, a middle spring card 3-2-3 and a lower spring card 3-2-4 are sequentially arranged below the unlocking pin 3-2-1, the steel plate elastic piece support 3-1 is clamped with the upper spring card 3-2-2 and the lower spring card 3-2-4, the middle spring card 3-2-3 penetrates through the steel plate elastic piece support 3-1 and is connected with the independent lock pin 3-3 in a matching mode, so that the steel plate elastic piece body 3-2 and the independent lock pin 3-3 form a linkage mechanism, the top of the steel plate elastic piece support 3-1 is provided with an unlocking pin placing hole 3-1-1, the unlocking pin 3-2-1 penetrates through the steel plate elastic piece support 3-1 and is placed in the unlocking pin placing hole 3-1-1, and the back of the steel plate elastic piece body 3-2 is provided with an energy absorption elastic piece 3-2-5;
the shell 1 comprises an upper shell 1-1 and a lower shell 1-2, the materials of the upper shell 1-1 and the lower shell 1-2 are both POM and are welded firmly through hot-melt welding, a plug sheet hole 1-3 is formed in the bottom of the shell 1, a steel plate elastic sheet assembly 3 is fixedly connected inside the shell 1, one side of a lower spring card 3-2-4 is close to the plug sheet hole 1-3, an energy-absorbing elastic sheet 3-2-5 on the back of the steel plate elastic sheet body 3-2 is contacted with the inner wall of the upper shell 1-1, an unlocking hole 1-2-1 is formed in the lower shell 1-2, the unlocking pin placing hole 3-1-1 is connected with the unlocking hole 1-2-1 in a matched mode, the end sheet body 2 is fixedly connected inside the shell 1 through a connecting hole 2-2 part, and the braid folding seam hole 2-1 is connected with a braid.
Inserting sheet and safety belt pretension end piece assembling process: an inserting piece on the pretensioner is inserted into an inserting piece hole 1-3 in the bottom of a safety belt pre-tightening end piece, a lower spring clamping piece 3-2-4 and an independent lock pin 3-3 are sequentially extruded, the independent lock pin 3-3 moves towards the direction of the back of a steel plate elastic piece body 3-2 to drive an energy absorption elastic piece 3-2-5 to be compressed and deformed, pressure F is applied to an upper shell 1-1, the inserting piece continues to slide until the inserting piece does not extrude the independent lock pin 3-3, at the moment, the energy absorption elastic piece 3-2-5 rebounds under the action of elastic force to drive the independent lock pin 3-3 to reset, the independent lock pin 3-3 is matched and connected with an opening in the inserting piece, and the inserting piece is locked in the safety belt pre-tightening end piece;
the process of detaching the inserting sheet from the safety belt pre-tightening end sheet is as follows: an object with a square cross section, such as a screwdriver or a key, is inserted into the unlocking hole 1-2-1, the unlocking pin 3-2-1 is pushed by force to enable the unlocking pin 3-2-1 to move towards the upper shell 1-1, then the independent locking pin 3-3 moves towards the upper shell 1-1, the energy-absorbing elastic sheet 3-2-5 deforms and compresses under the obstruction of the upper shell 1-1, at the moment, the inserting sheet is taken down, the object with the square cross section is pulled out of the insertion unlocking hole 1-2-1, and the independent locking pin 3-3 resets under the action of the elastic force of the energy-absorbing elastic sheet 3-2-5.
The two energy-absorbing elastic sheets 3-2-5 are arranged in total, and the two energy-absorbing elastic sheets 3-2-5 are symmetrically distributed on the left side and the right side of the back of the steel plate elastic sheet body 3-2.
The lower spring clamping piece 3-2-4 is E-shaped with an upward opening, and smooth bulges are arranged on three edges.
The end piece body 2 is made of high-strength metal and is 2mm-3mm thick.
The edges of the woven belt crease holes 2-1 are subjected to smooth treatment, so that the friction between the woven belt crease holes 2-1 and the woven belt is reduced.
The thickness of the steel plate elastic sheet body 3-2 is less than 1mm.
The middle spring clamping piece 3-2-3 and the independent lock pin 3-3 are in interference fit, so that a linkage mechanism formed by the middle spring clamping piece 3-2-3 and the independent lock pin 3-3 is more compact in structure.
The two sides of the unlocking pin 3-2-1 are provided with raised edges, so that the contact area of the unlocking pin 3-2-1 and objects with square sections, such as a screwdriver or a key, is increased, and the unlocking is more convenient.
The two sides of the steel plate elastic sheet support 3-1 are both provided with protrusions, the inner surfaces of the upper shell 1-1 and the lower shell 1-2 are provided with grooves matched with the protrusions, and the steel plate elastic sheet support 3-1 is more stable in the shell 1 through the matching of the protrusions and the grooves.
The invention also comprises an automobile which comprises the safety belt pre-tightening end piece, wherein the safety belt pre-tightening end piece in the automobile is quickly and reliably connected with the insertion piece of the pre-tightening device, the efficiency is high, the time is saved, the arrangement is flexible, the assembly is simple and reliable, the maintenance convenience is high, and the manual mistaken unlocking can be effectively avoided.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A safety belt pre-tightening end piece is characterized by comprising a shell (1), an end piece body (2) and a steel plate elastic piece assembly (3);
the end piece body (2) is provided with a braid crease hole (2-1) and a connecting hole (2-2);
the steel plate elastic piece assembly (3) comprises a steel plate elastic piece bracket (3-1), a steel plate elastic piece body (3-2) and an independent lock pin (3-3);
the energy absorption steel plate spring piece is characterized in that an unlocking pin (3-2-1) is arranged at the top of the front face of the steel plate spring piece body (3-2-2), an upper spring clamping piece (3-2-2), a middle spring clamping piece (3-2-3) and a lower spring clamping piece (3-2-4) are sequentially arranged below the unlocking pin (3-2-1), the steel plate spring piece support (3-1) is clamped with the upper spring clamping piece (3-2-2) and the lower spring clamping piece (3-2-4), the middle spring clamping piece (3-2-3) penetrates through the steel plate spring piece support (3-1) and is in matched connection with an independent locking pin (3-3), an unlocking pin placing hole (3-1-1) is formed in the top of the steel plate spring piece support (3-1), the unlocking pin (3-2-1) penetrates through the steel plate spring piece support (3-1) and is placed in the unlocking pin placing hole (3-1-1), and an energy absorption spring piece (3-2-5) is arranged on the back face of the steel plate spring piece body (3-2);
the shell (1) comprises an upper shell (1-1) and a lower shell (1-2), the upper shell (1-1) is fixedly connected with the lower shell (1-2), an inserting piece hole (1-3) is formed in the bottom of the shell (1), the steel plate elastic piece assembly (3) is fixedly connected inside the shell (1), one side of a lower spring clamping piece (3-2-4) is close to the inserting piece hole (1-3), an energy absorption elastic piece (3-2-5) on the back of the steel plate elastic piece body (3-2) is in contact with the inner wall of the upper shell (1-1), an unlocking hole (1-2-1) is formed in the lower shell (1-2), the unlocking pin placing hole (3-1-1) is matched and connected with the unlocking hole (1-2-1), the end piece body (2) is partially fixedly connected inside the shell (1) through a connecting hole (2-2), and the braid folding hole (2-1) is connected with a braid.
2. The safety belt pre-tightening end piece according to claim 1, characterized in that the number of the energy-absorbing shrapnels (3-2-5) is two, and the two energy-absorbing shrapnels (3-2-5) are symmetrically distributed on the left side and the right side of the back surface of the steel plate shrapnel body (3-2).
3. The pre-tensioned belt end piece according to claim 1, wherein the lower spring clip (3-2-4) is in the shape of an "E" with an upward opening, and smooth protrusions are provided on all three sides.
4. The belt pretensioner end plate according to claim 1, wherein the end plate body (2) has a thickness of 2mm to 3mm.
5. The belt pretensioner end plate according to claim 1, wherein the edge of the webbing crease hole (2-1) is smoothed.
6. The belt pretensioner end plate of claim 1, wherein the thickness of the steel plate spring body (3-2) is < 1mm.
7. The pre-tightening end piece according to claim 1, characterized in that the central spring clip (3-2-3) is in interference fit with the separate locking pin (3-3).
8. The pre-tensioning end piece according to claim 1, characterized in that the two sides of the unlocking pin (3-2-1) are provided with raised edges.
9. The pretension end plate according to claim 1, wherein protrusions are arranged on both sides of the steel plate spring plate support (3-1), and grooves matched with the protrusions are arranged on the inner surfaces of the upper shell (1-1) and the lower shell (1-2).
10. A motor vehicle comprising a seatbelt-pretensioned end piece according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211454766.8A CN115675352B (en) | 2022-11-21 | 2022-11-21 | Safety belt pretension end piece and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211454766.8A CN115675352B (en) | 2022-11-21 | 2022-11-21 | Safety belt pretension end piece and car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115675352A true CN115675352A (en) | 2023-02-03 |
| CN115675352B CN115675352B (en) | 2024-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211454766.8A Active CN115675352B (en) | 2022-11-21 | 2022-11-21 | Safety belt pretension end piece and car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115675352B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1418440A (en) * | 1961-10-04 | 1975-12-17 | Sigmatex Ag | Belt buckle |
| US4228567A (en) * | 1977-09-20 | 1980-10-21 | Nsk-Warner K.K. | Buckle assembly for seat belt |
| CN1714695A (en) * | 2004-06-30 | 2006-01-04 | 株式会社东海理化电机制作所 | Buckle device |
| CN2789083Y (en) * | 2004-12-14 | 2006-06-21 | 上海冠驰汽车安全技术有限公司 | Pretightening buckle for safety belt |
| CN203358527U (en) * | 2013-06-04 | 2013-12-25 | 一嵩工业股份有限公司 | Caution switch assembling structure of safety belt buckle |
| JP3224331U (en) * | 2019-09-27 | 2019-12-12 | ポリマーギヤ株式会社 | Safety belt buckle for work at height |
-
2022
- 2022-11-21 CN CN202211454766.8A patent/CN115675352B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1418440A (en) * | 1961-10-04 | 1975-12-17 | Sigmatex Ag | Belt buckle |
| US4228567A (en) * | 1977-09-20 | 1980-10-21 | Nsk-Warner K.K. | Buckle assembly for seat belt |
| CN1714695A (en) * | 2004-06-30 | 2006-01-04 | 株式会社东海理化电机制作所 | Buckle device |
| CN2789083Y (en) * | 2004-12-14 | 2006-06-21 | 上海冠驰汽车安全技术有限公司 | Pretightening buckle for safety belt |
| CN203358527U (en) * | 2013-06-04 | 2013-12-25 | 一嵩工业股份有限公司 | Caution switch assembling structure of safety belt buckle |
| JP3224331U (en) * | 2019-09-27 | 2019-12-12 | ポリマーギヤ株式会社 | Safety belt buckle for work at height |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115675352B (en) | 2024-05-03 |
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