CN103273901A - Connecting mechanism of safety air bag module and steering wheel - Google Patents
Connecting mechanism of safety air bag module and steering wheel Download PDFInfo
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- CN103273901A CN103273901A CN2013101854334A CN201310185433A CN103273901A CN 103273901 A CN103273901 A CN 103273901A CN 2013101854334 A CN2013101854334 A CN 2013101854334A CN 201310185433 A CN201310185433 A CN 201310185433A CN 103273901 A CN103273901 A CN 103273901A
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- torsion spring
- steering handwheel
- air bag
- lower plywood
- bag module
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Abstract
The invention provides a connecting mechanism of a safety air bag module and a steering wheel. The connecting mechanism of the safety air bag module and the steering wheel comprises a lower layer plate of a floating pressing and sounding mechanism and a steering wheel skeleton, wherein the lower layer plate of the floating pressing and sounding mechanism is provided with a torsion spring, a positioning hole and an elastic cushion, and the steering wheel skeleton is provided with an inverted hook, a positioning column and a boss. The torsion spring is connected with the inverted hook in a hooking mode, the positioning column is inserted in the positioning hole and is matched with the positioning hole, and the boss is attached to the elastic cushion. The connecting mechanism of the safety air bag module and the steering wheel has the advantages of being reliable in connection and convenient to install and disassemble and the like.
Description
Technical field
The present invention relates to automotive field, be specifically related to steering handwheel mechanism.
Background technology
At present, air bag module is housed all on the steering handwheel of most power actuated vehicles, this module functions is to provide to press function aloud when urgent, provides inflatable air bag during collision between chaufeur and steering handwheel, the protection driver safety.Adopt and floating typely press aloud comparatively commonly, float and to press mechanism aloud and be integrated in air bag module or be integrated on the steering handwheel.Press aloud and realize after function needs air bag module to be assembled to steering handwheel, the installation of air bag module and steering handwheel will design according to position and the structure of pressing mechanism aloud of floating.Press the form of mechanism between air bag module and steering handwheel aloud for floating.
Air bag module connects with often adopting bolt being connected of steering handwheel, adopts bolt fastening structure reliable, but has following shortcoming: binding bolt length consuming time during assembling, and efficiency of assembling is low; And to the technological requirement height of assembling, bolt is easily tightened uneven influence assembling, and the clearance plane difference that horn hood and steering handwheel occur problem such as change also can influence attractive in appearance; Parts are many, cause cost higher.
Summary of the invention
For addressing the above problem, the invention provides the bindiny mechanism of a kind of air bag module and steering handwheel skeleton, it is reliable that it has connection, characteristics such as installation, convenient disassembly.
The technical solution used in the present invention:
The bindiny mechanism of a kind of air bag module and steering handwheel, it comprises:
Float and press the lower plywood of mechanism aloud, it has torsion spring, knock hole, cushion;
The steering handwheel skeleton, it has barb, registration mast, boss;
Described torsion spring and described barb clasp joint, described registration mast inserts described knock hole and is mated, and described boss and described cushion are fitted.
Selectable, described torsion spring and described lower plywood are fixed, the structure of described torsion spring is: the middle part of described torsion spring has snap ring, and the via hole that described snap ring passes described lower plywood is along the driving surface that catches on described barb after the entering surface of described barb enters, pressurized when described snap ring contacts with entering surface.
Selectable, the fixed form of described torsion spring and described lower plywood is: the spring silk at described torsion spring two ends passes described lower plywood, and the local flange of described lower plywood is waled described spring silk, and described via hole has the flange of location snap ring.
Selectable, the entering surface of described barb and the angle of described driving surface are acute angle.
Selectable, described lower plywood has the depressed part for ccontaining torsion spring.
Selectable, have lining between described registration mast and the described knock hole, described lining has the flange for axial location.
Selectable, described steering handwheel skeleton is die cast.
Beneficial effect of the present invention:
Adopt the torsion spring of lower plywood to cooperate to realize being fastenedly connected with the barb of steering handwheel skeleton; The spring chair that adopts lower plywood and the boss of steering handwheel skeleton cooperate to limit the axial motion of the relative steering handwheel skeleton of lower plywood; The knock hole that adopts lower plywood and the registration mast of steering handwheel skeleton cooperate to limit the radial motion of the relative steering handwheel skeleton of lower plywood, and this connection structure connects reliable, installation, convenient disassembly.
Further, torsion spring is to cooperate with the driving surface of barb by the snap ring in the middle part of the torsion spring with cooperating of barb, and is simple in structure, stable.
Further, the spring silk at torsion spring two ends passes lower plywood, is waled by the flange of lower plywood, axially and is radially obtaining well securedly, prevents the torsion spring movement of tumbling, and the flange of via hole has the effect of location snap ring.
Further, the entering surface of barb and the angle of driving surface are acute angle, whole pressurized when snap ring is contacted with entering surface, and torsion spring is out of shape gradually, can not produce unexpected deformation, avoids losing efficacy.
Further, the depressed part of lower plywood can hold the placement torsion spring, makes the torsion spring stability of structure good, and difficult generation is rocked.
Further, the lining between registration mast and the knock hole has the effect of guide-localization.
Further, the steering handwheel skeleton is die cast, and overall construction intensity is good, and is convenient to processing.
Description of drawings
Fig. 1 is the three-dimensional exploded view of pressing mechanism and steering handwheel skeleton aloud;
Fig. 2 is the block diagram of pressing mechanism's lower plywood aloud;
Fig. 3 is the birds-eye view of pressing mechanism's lower plywood aloud;
Fig. 4 is the scheme drawing that barb and torsion spring cooperate;
Fig. 5 is the scheme drawing that boss and cushion cooperate;
Fig. 6 is the scheme drawing that registration mast and knock hole cooperate;
Fig. 7 is the assembly drowing of pressing mechanism and steering handwheel skeleton aloud.
Description of reference numerals: 1-floats and presses mechanism aloud, 2-top plate, 3-lower plywood, 31-torsion spring, the 311-snap ring, 312-spring silk, 32-cushion, 33-knock hole, the 34-flange, the local flange of 35-, 36-via hole, 37-depressed part, 4-steering handwheel skeleton, 41-barb, 411-driving surface, 412-entering surface, the 413-bill, 42-boss, 43-registration mast, the 44-lining, 441-lining flange, 45-hole.
The specific embodiment
Describe the present invention below in conjunction with drawings and the specific embodiments.
As shown in Figure 1, press mechanism aloud and be integrated on the safety airbag casing, press the floating type mechanism 1 that presses aloud that mechanism presses aloud for the two-ply realization of adopting relative motion aloud, realize pressing aloud by the contact of the contact on the two-ply.Top plate 2 is connected with safety air bag, and lower plywood 3 is captiveed joint with steering handwheel 4.Steering handwheel 4 is die cast, and overall construction intensity is good, and is convenient to processing.Captiveing joint between lower plywood 3 and the steering handwheel 4 realizes in the following way:
See that in conjunction with Fig. 2～Fig. 4 the bindiny mechanism of air bag module and steering handwheel comprises: lower plywood 3, steering handwheel skeleton 4.It is 3 that lower plywood 3 has among a plurality of torsion spring 31(figure), a plurality of knock hole 33, a plurality of cushion 32, steering handwheel skeleton 4 has a plurality of barbs 41, a plurality of registration mast 43, a plurality of boss 42, torsion spring 34, cushion 32 are captiveed joint with lower plywood 3, registration mast 43, barb 41, boss 42 are captiveed joint with steering handwheel skeleton 4, torsion spring 31 and barb 41 clasp joints, registration mast 43 inserts knock hole 33 and is mated, and boss 42 is fitted with cushion 32.Number and the position of torsion spring 31, cushion 32, knock hole 33 can change as required, as long as make the integral structure stress equalization.
The two ends of torsion spring 31 and lower plywood 3 are fixing, the middle part of torsion spring 31 has snap ring 311, the via hole 36 that snap ring 311 passes lower plywood 3 cooperates with the driving surface 411 of barb 41, the via hole 36 that snap ring 311 passes lower plywood 3 is along the driving surface 411 that catches on barb 41 after the entering surface 412 of barb 41 enters, pressurized when snap ring 311 contacts with entering surface 412.The spring silk 312 at torsion spring 31 two ends can pass through mode such as welding, riveted joint and lower plywood 3 is fixing, preferably, two ends spring silk 312 bendings of torsion spring 31 are by the hole of lower plywood 3, simultaneously the top local flange 35 of the lower plywood 3 two ends spring silk 312 of withholding torsion spring prevents that torsion spring from tumbling and move, via hole 36 has the flange 34 of location snap ring 311, and flange 34 is bent to form at via hole 36 places for lower plywood 3.
The middle part of torsion spring 31 is bent into snap ring 311, and snap ring 311 passes lower plywood 3, and via hole 36 sizes of lower plywood 3 will satisfy torsion spring 31 with barb 41 clampings and break away from needed stroke requirement.The fixed position of torsion spring 31 on lower plywood 3 is corresponding with barb 41, and the spiral part of torsion spring 31 is placed in the depressed part 37 of lower plywood 3, and depressed part 37 can hold places torsion spring 31, makes the structural stability of torsion spring 31 good, and difficult generation is rocked.
Preferably, barb 41 is distributed in 3,6,9 o'clock of steering handwheel skeleton 4 base plates on the direction, is convenient to drive torsion spring 31 from steering handwheel back side serviceable tool in barb place perforate 45 on the steering handwheel base plate and breaks away from barbs 41.Barb 41 stretches to steering handwheel inside from the steering handwheel base plate, driving surface 411 tangles snap ring 311 for the plane, the entering surface 412 of its back is the inclined-plane, entering surface 412 is acute angle with the angle of driving surface 411, pressurized when snap ring 311 contacts with entering surface 412, direction of tilt will mate with the rotation direction of torsion spring 31, and when guaranteeing air bag module is installed, entering surface 412 screws torsion spring.Barb 3 length, shape need design with snap ring 311 couplings, and barb 41 can hook snap ring 311 easily when guaranteeing assembling, and snap ring 311 is dismantled easily simultaneously.
As shown in Figure 5, lower plywood 3 surfaces are evenly distributed with at least four cushions 32, have the boss 42 that matches with cushion 32 on the steering handwheel skeleton 4, when snap ring 311 cooperates with driving surface 411, and cushion 32 compressed distortion.Boss 42 is distributed in around steering handwheel 4 base plates, and boss 42 stretches to steering handwheel inside from steering handwheel skeleton 4 base plates, and boss 42 is hollow structure, and boss 42 height need cooperate with barb 41, torsion spring 31, cushion 32 to be determined.The position of the cushion 32 on the lower plywood 3 is corresponding with boss, and when barb 41 cooperated with torsion spring 31, boss 42 contacted with cushion 32, cushion 32 pressurizeds.Boss 42 limits lower plywoods 3 along 4 axial the moving of steering handwheel skeleton with barb 41, and when dismantling simultaneously, the elastic force that snap ring 311 breaks away from barbs 41 back cushions 32 can make lower plywood 3 and steering handwheel skeleton 4 flick air bag module for convenience detach.
As shown in Figure 6, be evenly distributed with at least two knock holees 33 on the lower plywood 3, registration mast 43 stretches to inside from the steering handwheel base plate, cooperates with knock hole 33 on the lower plywood 3.Registration mast 43 is conical surface hollow structure, and is preferred, has lining 44 between registration mast 43 and the knock hole 33, and lining 44 has the lining flange 441 for axial location.Mounting bush 44 in the knock hole 33 plays the buffer-oriented effect.By cooperating of registration mast 43 and knock hole 33, define lower plywood 3 relative steering handwheel skeleton 4 motions radially, guaranteed the location accurately and be connected reliably.
As shown in Figure 7, during installation, torsion spring 31 is tangled by barb 41, and cushion 32 withstood by boss 42, defines the axial motion of lower plywood 3 relative steering handwheel skeletons 4; The cooperation of knock hole 33 and registration mast 43 defines lower plywood 3 relative steering handwheel skeletons 4 in radially motion.During dismounting, drive torsion spring 31 from steering handwheel bottom serviceable tool torsion spring 31 and barb 41 are broken away from, utilize cushion 32 elasticity that safety airbag casing and steering handwheel are broken away from simultaneously.
Though the present invention is described in conjunction with above embodiment, but the present invention is not limited to above-described embodiment, and only being subjected to the restriction of claims, those of ordinary skills can easily make amendment to it and change, but do not leave essence design of the present invention and scope.
Claims (7)
1. the bindiny mechanism of an air bag module and steering handwheel is characterized in that, comprising:
Float and press the lower plywood of mechanism aloud, it has torsion spring, knock hole, cushion;
The steering handwheel skeleton, it has barb, registration mast, boss;
Described torsion spring and described barb clasp joint, described registration mast inserts described knock hole and is mated, and described boss and described cushion are fitted.
2. the bindiny mechanism of air bag module according to claim 1 and steering handwheel, it is characterized in that, described torsion spring and described lower plywood are fixed, the structure of described torsion spring is: the middle part of described torsion spring has snap ring, the via hole that described snap ring passes described lower plywood is along the driving surface that catches on described barb after the entering surface of described barb enters, pressurized when described snap ring contacts with entering surface.
3. the bindiny mechanism of air bag module according to claim 2 and steering handwheel, it is characterized in that, the fixed form of described torsion spring and described lower plywood is: the spring silk at described torsion spring two ends passes described lower plywood, the local flange of described lower plywood is waled described spring silk, and described via hole has the flange of location snap ring.
4. the bindiny mechanism of air bag module according to claim 2 and steering handwheel is characterized in that, the entering surface of described barb and the angle of described driving surface are acute angle.
5. according to the bindiny mechanism of claim 1 or 2 or 3 described air bag modules and steering handwheel, it is characterized in that described lower plywood has the depressed part for ccontaining torsion spring.
6. the bindiny mechanism of air bag module according to claim 1 and steering handwheel is characterized in that, has lining between described registration mast and the described knock hole, and described lining has the flange for axial location.
7. the bindiny mechanism of air bag module according to claim 1 and steering handwheel is characterized in that, described steering handwheel skeleton is die cast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101854334A CN103273901A (en) | 2013-05-17 | 2013-05-17 | Connecting mechanism of safety air bag module and steering wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101854334A CN103273901A (en) | 2013-05-17 | 2013-05-17 | Connecting mechanism of safety air bag module and steering wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103273901A true CN103273901A (en) | 2013-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101854334A Pending CN103273901A (en) | 2013-05-17 | 2013-05-17 | Connecting mechanism of safety air bag module and steering wheel |
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| CN (1) | CN103273901A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201105706Y (en) * | 2007-10-22 | 2008-08-27 | 延锋百利得（上海）汽车安全系统有限公司 | Connection structure for safety airbag module and steering-wheel of automobiles |
| CN101391595A (en) * | 2007-09-20 | 2009-03-25 | 丰田合成株式会社 | Air bag module mounted steering wheel |
-
2013
- 2013-05-17 CN CN2013101854334A patent/CN103273901A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101391595A (en) * | 2007-09-20 | 2009-03-25 | 丰田合成株式会社 | Air bag module mounted steering wheel |
| CN201105706Y (en) * | 2007-10-22 | 2008-08-27 | 延锋百利得（上海）汽车安全系统有限公司 | Connection structure for safety airbag module and steering-wheel of automobiles |
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Application publication date: 20130904 |