CN103359054A - Steering wheel locking device - Google Patents

Abstract

The invention provides a steering wheel locking device. The steering wheel locking device comprises a housing, a circuit board arranged in the housing, a motor and a lock rod which are fixed in the housing, and a controller, wherein the circuit board is electrically connected with the controller and the motor; the lock rod can move between a locking position and an unlocking position; when the lock rod is located in the locking position, the lock rod forbids a steering wheel to rotate; when the lock rod is located in the unlocking position, the lock rod allows the steering wheel to rotate; the motor provides a driving force required by movement of the lock rod; a first microswitch and a second microswitch are arranged on the circuit board; when the lock rod moves to the locking position, the first microswitch is pressed and triggered, so that the controller disconnects power supply of the motor, and the lock rod stops in the locking position; and when the lock rod moves to the unlocking position, the second microswitch is pressed and triggered, so that the controller disconnects the power supply of the motor, and the lock rod stops in the unlocking position.

Description

Steering wheel lock device

Technical field

The present invention relates to a kind of vehicle, relate in particular to a kind of steering wheel lock device of vehicle.

Background technology

By installation direction dish blocking device bearing circle is carried out locking/unlocking in the vehicle, preventing the 3rd people to the unauthorized operation of bearing circle, and prevent that vehicle is stolen.Steering wheel lock device generally includes the locking bar that can move and moves the motor that propulsive effort is provided for described locking bar between latched position and unlocked position.When locking bar was in latched position, its spline with the bearing circle column engaged, thereby prevents rotating of steering wheel.When locking bar was retracted into unlocked position, locking bar broke away from the column of bearing circle, allowed rotating of steering wheel.Existing a kind of steering wheel lock device adopts Hall element and detects the position of magnet induction locking bar, and with the stroke of control locking bar, this kind steering wheel lock device needs higher cost.

The present invention aims to provide a kind of lower-cost steering wheel lock device.

Summary of the invention

The invention provides a kind of steering wheel lock device, be installed in the vehicle, described steering wheel lock device comprises housing, be located at the circuit card in the housing, be fixed in motor and locking bar in the housing, an and controller, described circuit card is electrically connected with controller and motor, described locking bar can move between latched position and unlocked position, when locking bar is in described latched position, described locking bar disabled orientation dish rotates, when locking bar is in described unlocked position, described locking bar allows described rotating of steering wheel, and described motor provides locking bar to move required propulsive effort, and described circuit card is provided with the first microswitch and the second microswitch, when described locking bar moves to described latched position, described the first microswitch is pressed and triggers, and makes controller disconnect the power supply of described motor, thereby makes described locking bar be parked in described latched position; When described locking bar moved to described unlocked position, described the second microswitch was pressed and triggers, and made controller disconnect the power supply of described motor, thereby made described locking bar be parked in described unlocked position.

Preferably, described circuit card is flexible PCB, described the first microswitch and the second microswitch arrange in opposite directions, described circuit card is flexible PCB, be provided with some support portions of passing described circuit card in the described housing, the part that described circuit card arranges described the first microswitch and the second microswitch is resisted against respectively the mutually surface in opposite directions, two support portions of neck.

Preferably, described controller is connected with the safety system controller of vehicle, and when circuit card was destroyed, described controller sent a signal to the safety system controller of vehicle so that described safety system controller is forbidden vehicle normal starting or normal operation.

Preferably, described housing mainly is made of plastics, and when described housing was destroyed, described circuit card damaged thereupon.

Preferably, described steering wheel lock device also comprises an output shaft and a thrust piece, described thrust piece is connected with described locking bar, described output shaft is rotated by motor-driven, described output shaft forms by screw thread with thrust piece and cooperates, when the rotation of described output shaft, described thrust piece is along the output shaft movement that is in line.

Preferably, convex with a contact part on the described thrust piece, when described locking bar moved to latched position, described contact part was pressed described the first microswitch and is triggered the first microswitch; When described locking bar moved to unlocked position, described contact part was pressed described the second microswitch and is triggered the second microswitch.

Preferably, form snap device between described thrust piece and the described locking bar and interconnect with realization, described snap device comprises buckling groove and movably is contained in the interior lug of buckling groove.

Preferably, described steering wheel lock device also comprises a spring, described spring is compressed between described locking bar and the described output shaft, described spring provides one to support power to described locking bar all the time, when described locking bar when described latched position moves to described unlocked position, described spring is further compressed.

Preferably, described steering wheel lock device also comprises a fixed mount, and described fixed mount is provided with guide channel, and described locking bar is mobile between latched position and unlocked position along described guide channel.

Preferably, described steering wheel lock device also comprises a locating part that is fixed in the output shaft end, prevents that thrust piece from coming off from described output shaft thereby described locating part limits the displacement of described thrust piece.

Preferably, described locating part is sheathed on described output the tip of the axis, and described output the tip of the axis is connected with a screw, and described screw is limited in described locating part on the output shaft.

Preferably, described steering wheel lock device also comprises a planet gear cluster, and described motor comprises a rotating shaft, and described rotating shaft and described output shaft are realized being in transmission connection by described compound planet gear.

Preferably, described compound planet gear is the multi-stage planetary gear group.

Above-mentioned steering wheel lock device adopts the feed circuit of microswitch control motor, compares traditional steering wheel lock device, and steering wheel lock device of the present invention has lower cost.

In order further to understand feature of the present invention and technology contents, see also following about detailed description of the present invention and accompanying drawing, yet institute's accompanying drawing only provide with reference to and the explanation usefulness, the present invention is limited.

Description of drawings

Fig. 1 is the three-dimensional combination figure of the steering wheel lock device of one embodiment of the invention.

Fig. 2 is the exploded drawings of steering wheel lock device shown in Figure 1.

Fig. 3 is the expansion drawing of the circuit card of steering wheel lock device shown in Figure 2.

Fig. 4 is the module link road of steering wheel lock device shown in Figure 1.

Fig. 5 is the assembly drawing that is installed on another angle of parts of enclosure interior in the steering wheel lock device shown in Figure 2.

Fig. 6 is the exploded drawings of component combination shown in Figure 5.

Fig. 7 is the exploded drawings of gear assembly shown in Figure 5.

Fig. 8 is the assembly drawing of gear assembly shown in Figure 7.

Fig. 9 is the part sectional view of steering wheel lock device shown in Figure 1.

Figure 10 is the three-dimensional exploded view of the steering wheel lock device of another embodiment of the present invention.

The specific embodiment

Below in conjunction with accompanying drawing, by the specific embodiment of the present invention is described in detail, will make technical scheme of the present invention and other beneficial effects apparent.

See also Fig. 1 and Fig. 2, the steering wheel lock device 10 of one embodiment of the invention comprises housing 20, is attached at the circuit card 30 of housing 20 inwalls, is fixed in motor 40, gear assembly 50, fixed mount 70, thrust piece 80 and locking bar 85 in the housing 20.Described motor 40 is electrically connected with described circuit card 30.

Described housing 20 roughly is the rectangular-shaped of hollow, and it comprises a body 21 and a lid 22.Described body 21 comprises that a base plate that is rectangle 23 reaches from the vertically extending sidewall 24 of the periphery of base plate 23.One end of described sidewall 24 is provided with a fluting 25.Described fluting 25 roughly is the U-shaped of an end opening, and its open end is towards described lid 22.Described lid 22 is covered on the end of described sidewall 24,25 the open end of namely slotting, thus form one receiving space 26 in the inside of housing 20, be used for accommodating described circuit card 30, motor 40, gear assembly 50, fixed mount 70, thrust piece 80 and locking bar 85.The inside face of described body 21 and lid 22 is provided with some being parallel to each other and the support portion 27 at interval, is used for fixing described motor 40, gear assembly 50 etc.Described circuit card 30 is located at described housing 20 inwalls.Described circuit card 30 is provided with two microswitch 33a, 33b.Described two microswitch 33a, 33b interval and be oppositely arranged.

Preferably, described housing 20 is made of plastics, and described circuit card 30 is a flexible PCB (FPC).Described circuit card 30 is made take polyimide or mylar as base material.Therefore have lightweight, thin thickness, the soft characteristics of quality.Described circuit card 30 is attached at the whole inside face of housing 20.That is to say, circuit card 30 is attached at each internal face of housing 20.Finish at steering wheel lock device under the state of assembling, described circuit card 30 roughly is the rectangular-shaped of hollow.For ease of the installation process of direction dish blocking device 10, the end face 31 of the circuit card 30 shown in Fig. 2 is opened, and end face 31 is the state that does not cover in other words.Described circuit card 30 is provided with some grooves 32 and is used for passing for the support portion 27 of housing 20.The fluting 25 of described circuit card 30 corresponding described housings 20 is provided with an opening 35.The part that described circuit card 30 arranges described microswitch 33a, 33b is resisted against respectively on the two adjacent support portions 27 of body 21.

Please consult simultaneously Fig. 3, described circuit card 30 is laminar lamellar body 30 ' folding forming by one.Described lamellar body 30 ' along the turnover of dotted line shown in Fig. 3, just can be formed described circuit card 30.Also be provided with some connection terminals 34 on the described circuit card 30.Adaptor union 25 is electrically connected with housing 20 outside formation described connection terminal 34 on the lid 22 by being installed in.During installation, first described circuit card 30 is attached at body 21 inwalls; Then the parts such as motor 40, gear assembly 50 are installed in the receiving space 23; At last when lid 22 and body 21 closing lid, the end face 31 of circuit card 30 is attached at the inwall of lid 22, thereby finishes the assembling of steering wheel lock device 10.

Please consult simultaneously Fig. 4, described steering wheel lock device 10 also comprises a controller 90.Described controller 90 is installed in the vehicle (not shown) and is positioned at the outside of housing 20.Thereby described controller 90 is electrically connected 40 work of control motor with described circuit card 30.Described controller 90 is electrically connected with Vehicle security system microcontroller (ECU) 92.When circuit card 30 was destroyed, the controller 90 that is electrically connected with circuit card 30 made motor 40 cisco unity malfunctions no longer to the power supply of motor 40; Send a signal to Vehicle security system ECU92 with Time Controller 90, Vehicle security system ECU92 stops the normal operation of other devices immediately, such as making the engine can not normal starting, prevents that vehicle is stolen.Because described circuit card 30 is flexible PCB, and be attached at each inwall of housing 20, therefore when housing 20 is destroyed, circuit card 30 also can be destroyed, that is to say, even the 3rd people's malicious sabotage housing 20 is untied handle lock by force, because Vehicle security system ECU92 receives signal and stops the normal operation of other devices, prevents that effectively vehicle is stolen.

Please consult simultaneously Fig. 5 and Fig. 6, described motor 40 is fixed in the housing 20 by support portion 24 carryings of housing 20.Described motor 40 comprises a rotating shaft 42.

Please consult simultaneously Fig. 7 and Fig. 8, described gear assembly 50 is preferably a planet gear cluster, and it comprises a sun wheel 51, a plurality of satellite gear 52, an inner gear 53, is used for supporting the pivoted frame 54 of described satellite gear 52, and a pad 55.Described inner gear 53 comprises that an end plate 56 reaches from the vertically extending engaging piece 57 of the periphery of end plate 56.The inside face of described engaging piece 57 forms some internal tooths.The central authorities of described end plate 56 are provided with a through hole 58.The free end of the rotating shaft 42 of described motor 40 passes the through hole 58 of end plate 56 from the outside of end plate 56, and in the described sun wheel 51 of the installed inside of end plate 56.Described sun wheel 51 is fixed on the free end of described rotating shaft 42 relatively still, and sun wheel 51 is rotated with identical cireular frequency with rotating shaft 42.Better, described inner gear 53 is made by the compound of plastic and glass fiber.

In the present embodiment, the quantity of described satellite gear 52 is three.Each satellite gear 52 rotatably is installed on the described pivoted frame 54 by a planet wheel spindle 59.The combination of pivoted frame 54 and satellite gear 52 is installed in the inner gear 53.The inboard of each satellite gear 52 and 51 engagements of described sun wheel, the internal tooth engagement of the outside and described inner gear 53.Described sun wheel 51 drives described satellite gear 52 rotations during with rotating shaft 42 rotation, in the time of described satellite gear 52 rotation along the internal tooth revolution of inner gear 53, thereby drive pivoted frame 54 along the hand of rotation rotation identical with sun wheel 51.In the present embodiment, the tooth of sun wheel 51, satellite gear 52 and inner gear 53 is helical teeth, to reduce noise.Be appreciated that ground, in other embodiments, sun wheel, satellite gear and inner gear also can adopt the straight-tooth design.Described pad 55 is between end plate 56 inwalls and satellite gear 52 of inner gear 53.The surface of described pad 55 is very smooth, thereby prevents the inwall of the end plate 56 of planet wheel spindle 59 direct friction inner geares 53.

The central authorities that one output shaft 60 is fixed in described pivoted frame 54.Described output shaft 60 extends out to inner gear 53 outsides from pivoted frame 54.Described output shaft 60 is coaxial with the rotating shaft 42 of described motor 40.In the present embodiment, described output shaft 60 removably is installed on the described pivoted frame 54, central authorities' formation one of described pivoted frame 54 roughly is the assembly opening 59a of D shape, the end periphery profile of described output shaft 60 and described assembly opening 59a are complementary, thereby the end of output shaft 60 can be arranged among the assembly opening 59a, and so that the rotation of pivoted frame 54 can be transferred to output shaft 60.Optionally, the assembly opening 59a of described pivoted frame 54 can also be rectangular, other are non-circular, corresponding for polygon etc., and the end of output shaft 60 also forms corresponding peripheral profile, equally also the torque of pivoted frame 54 can be exported to output shaft 60.In addition, described output shaft 60 also can extend from pivoted frame 54 one.The middle part of described output shaft 60 is provided with outside thread 61.Steering wheel lock device 10 in the present embodiment adopts planetary gear speed-reduction, and output shaft 60 is coaxial with the rotating shaft 42 of motor 40, can save the radially superolateral space of motor 40, makes the structure of steering wheel lock device 10 more compact.

Please consult simultaneously Fig. 6, described fixed mount 70 comprises a supporting mass 71 and two guide rails 72 that extend from the relative both sides of supporting mass 71.Described supporting mass 71 is roughly rounded, and it arranges near described gear assembly 50.Described two guide rails 72 are arranged in parallel, and its surface in opposite directions is respectively equipped with a guide channel 73.Described guide channel 73 is along being parallel to extending axially of described output shaft 60.The central authorities of described supporting mass 71 are provided with a perforation 74, and bore a hole and be fixed with a bearing 75 in 74.Described output shaft 60 extends out from gear assembly 50, passes described bearing 75 afterwards between described two guide rails 72.

Described thrust piece 80 is provided with the tapped bore 81 that the outside thread 61 with described output shaft 60 is complementary.Described output shaft 60 is arranged in the tapped bore 81 of described thrust piece 80.Described thrust piece 80 is outstanding two lugs 82 that form outwards.82 one-tenth 180 ° of described two lugs are symmetrical arranged.The further convex of described thrust piece is provided with a contact part 83.

Described locking bar 85 is protruding to housing 20 outsides from the fluting 25 of housing 20, and described locking bar 85 comprises two guide arms 87 that the both sides shoulder of a locking part 86 and self-locking bonding part 86 1 ends extends.Described two guide arms 87 are contained in respectively in the guide channel 73 of described two guide rails 72.Described guide arm 87 can be parallel in described guide channel 73 interior edges the axial direction of output shaft 60 and slide.Each guide arm 87 is provided with a buckling groove 88.Described buckling groove 88 is along being parallel to extending axially of output shaft 60.Two lugs 82 of described thrust piece 80 are fastened on respectively in the buckling groove 88 of guide arm 87.One spring 89 is resisted against between the end of locking part 86 inboards and output shaft 60.Better, the inboard of described locking part 86 forms a depression 86a, is used for accommodating the end of described spring 89, thereby spring 89 is kept in place.Described spring 89 is in confined state all the time, thereby there is an outside thrust in spring 89 to locking bar 85 all the time, thereby the lug 82 of thrust piece 80 is affiliated to all the time on the right-hand member cell wall of buckling groove 88.

Please consult simultaneously Fig. 9, when output shaft 60 rotates along a first direction, described thrust piece 80 along output shaft 60 axially to left movement, spring 89 release portion elastic force, and promote described locking bar 85 to left movement are until the contact part 83 of thrust piece 80 is when touching microswitch 33a, locking bar 85 moves to a latched position of setting left, locking bar 85 is sticked in the spline of bearing circle column, and the locking direction dish prevents rotating of steering wheel.When output shaft 60 rotates along the second direction opposite with described first direction, the lug 82 of described thrust piece 80 promotes described locking bar 85 and moves right, the while Compress Spring, until the contact part 83 of thrust piece 80 is when touching microswitch 33b, locking bar 85 moves right the unlocked position of setting to, this hour locking lever 85 breaks away from the bearing circle column, and the unlocking direction dish allows rotating of steering wheel.

Above-mentioned microswitch 33a, 33b are used for the stroke of control thrust piece 80, thus the displacement of control locking bar 85.When thrust piece 80 moves to its contact part 83 left and touches microswitch 33a, microswitch 33a disconnects the feed circuit of motor 40, make motor 40 instantaneous quitting work, thereby make locking bar 85 rest on the latched position of setting, obtain the signal that locking bar 85 is in latched position with Time Controller 90.When thrust piece 80 moves right to its contact microswitch 33b, microswitch 33b disconnects the feed circuit of motor 40,40 moments of motor are quit work, thereby make locking bar 85 rest on the unlocked position of setting, obtain the signal that locking bar 85 is in the unlocked position with Time Controller 90.

Because described circuit card 30 is flexible PCB, and is attached at each inwall of housing 20, therefore when housing 20 is destroyed, circuit card 30 also can be destroyed, at this moment, the controller 90 that is electrically connected with circuit card 30 makes motor 40 cisco unity malfunctions no longer to the power supply of motor 40; Send a signal to Vehicle security system ECU92 with Time Controller 90, Vehicle security system ECU92 stops the normal operation of other devices immediately, make the vehicle can not normal starting or normal operation, such as forbidding the engine starting, pin wheel etc., thereby prevent that vehicle is stolen.

Figure 10 shows that the steering wheel lock device of second embodiment of the invention.The steering wheel lock device of the present embodiment is similar to the aforementioned embodiment, and difference is: the gear assembly 50 ' in the present embodiment comprises the secondary planetary gear group and exports the tip of the axis and fix a locating part for preventing that thrust piece from coming off from output shaft.

Compare with above-described embodiment, the gear assembly 50 ' of the present embodiment also comprises one second sun wheel 51 ' that is contained in the inner gear 53, some the second satellite gears 52 ' and the second pivoted frame 54 ' that is used for supporting the second satellite gear 52 '.The end of described the second sun wheel 51 ' cooperates with the pivoted frame 54 of first order compound planet gear.Described the second satellite gear 52 ' rotatably is fixed to the second pivoted frame 54 ' by the second planet wheel spindle 59 '.Because the combination of described the second satellite gear 52 ' and the second pivoted frame 54 ' also is contained in the inner gear 53.Therefore, it is longer that the inner gear 53 of the present embodiment is compared the axial length of inner gear 53 of the first embodiment.The inboard of described the second satellite gear 52 ' and the 51 ' engagement of the second sun wheel, the outside and inner gear 53 engagements.Thereby when exporting the 52 ' rotation of the second sun wheel the 51 ', the second sun wheel 51 ' driving the second satellite gear to by pivoted frame 54, the torque of first order planetary gear set along the internal tooth revolution of inner gear 53, rotates thereby drive the second pivoted frame 54 '.Because the setting of second stage compound planet gear, the gear assembly 50 ' of the present embodiment has larger output torque.Be appreciated that ground, the quantity of the compound planet gear that gear assembly is contained can be adjusted as required, can comprise the compound planet gear of three grades even more multistage number such as gear assembly.

The central authorities of described locating part 77 are provided with through hole, be used for passing described locating part 77 for the end of output shaft 60, thereby locating part 77 is sheathed on output shaft 60 ends.The terminal central authorities of described output shaft 60 are provided with a tapped bore vertically.One screw 78 is fixed in the tapped bore of this output shaft.Described screw 78 comprises the screw rod that matches with the tapped bore of described output shaft 60, and is positioned at screw rod end and external diameter greater than the spiral shell head of screw rod, and described screw rod is screwed together in the tapped bore of output shaft 60.And the spiral shell head is resisted against the end of output shaft 60, thereby the spiral shell head is limited in locating part 77 end of output shaft 60.The external diameter of locating part 77 comes off from output shaft 60 thereby locating part 78 prevents thrust piece 80 greater than the internal diameter of thrust piece 80.

In addition, the fixed mount 70 ' of the present embodiment is also different from the fixed mount 70 of above-described embodiment.In the present embodiment, the bottom side of two guide rails 72 ' of this fixed mount 70 ' (from direction shown in Figure 10) interconnects and makes two guide rails 72 form integral structure.

The above only is preferred embodiment of the present invention; not in order to limit the present invention; all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc.; such as; described housing is made by other materials; described circuit card is that tabular inflexibility circuit card or the described gear cluster commonly used are worm type of reduction gearing etc., all should be included within protection scope of the present invention.

Claims (13)

1. steering wheel lock device, be installed in the vehicle, described steering wheel lock device comprises housing, be located at the circuit card in the housing, be fixed in motor and locking bar in the housing, an and controller, described circuit card is electrically connected with controller and motor, described locking bar can move between latched position and unlocked position, when locking bar is in described latched position, described locking bar disabled orientation dish rotates, when locking bar was in described unlocked position, described locking bar allowed described rotating of steering wheel, and described motor provides locking bar to move required propulsive effort, it is characterized in that, described circuit card is provided with the first microswitch and the second microswitch, and when described locking bar moved to described latched position, described the first microswitch was pressed and triggers, make controller disconnect the power supply of described motor, thereby make described locking bar be parked in described latched position; When described locking bar moved to described unlocked position, described the second microswitch was pressed and triggers, and made controller disconnect the power supply of described motor, thereby made described locking bar be parked in described unlocked position.

2. steering wheel lock device according to claim 1, it is characterized in that, described the first microswitch and the second microswitch arrange in opposite directions, described circuit card is flexible PCB, be provided with some support portions of passing described circuit card in the described housing, the part that described circuit card arranges described the first microswitch and the second microswitch is resisted against respectively adjacent surface in opposite directions, two support portions.

3. steering wheel lock device according to claim 2, it is characterized in that, described controller is connected with the safety system controller of vehicle, when circuit card was destroyed, described controller sent a signal to the safety system controller of vehicle so that described safety system controller is forbidden vehicle normal starting or normal operation.

4. steering wheel lock device according to claim 3 is characterized in that, described housing mainly is made of plastics, and when described housing was destroyed, described circuit card damaged thereupon.

5. steering wheel lock device according to claim 1, it is characterized in that, also comprise an output shaft and a thrust piece, described thrust piece is connected with described locking bar, described output shaft is rotated by motor-driven, described output shaft and thrust piece form by screw thread and cooperate, and when described output shaft rotated, described thrust piece was along the output shaft movement that is in line.

6. steering wheel lock device according to claim 5 is characterized in that, convexes with a contact part on the described thrust piece, and when described locking bar moved to latched position, described contact part was pressed described the first microswitch and triggered the first microswitch; When described locking bar moved to unlocked position, described contact part was pressed described the second microswitch and is triggered the second microswitch.

7. steering wheel lock device according to claim 5 is characterized in that, forms snap device between described thrust piece and the described locking bar and interconnects with realization, and described snap device comprises buckling groove and movably is contained in the interior lug of buckling groove.

8. steering wheel lock device according to claim 7, it is characterized in that, also comprise a spring, described spring is compressed between described locking bar and the described output shaft, described spring provides one to support power to described locking bar all the time, when described locking bar when described latched position moves to described unlocked position, described spring is further compressed.

9. steering wheel lock device according to claim 8 is characterized in that, also comprises a fixed mount, and described fixed mount is provided with guide channel, and described locking bar is mobile between latched position and unlocked position along described guide channel.

10. steering wheel lock device according to claim 5 is characterized in that: also comprise a locating part that is fixed in the output shaft end, prevent that thrust piece from coming off from described output shaft thereby described locating part limits the displacement of described thrust piece.

11. steering wheel lock device according to claim 10 is characterized in that: described locating part is sheathed on described output the tip of the axis, and described output the tip of the axis is connected with a screw, and described screw is limited in described locating part on the output shaft.

12. steering wheel lock device according to claim 5 is characterized in that, also comprises a planet gear cluster, described motor comprises a rotating shaft, and described rotating shaft and described output shaft are realized being in transmission connection by described compound planet gear.

13. steering wheel lock device according to claim 12 is characterized in that: described compound planet gear is the multi-stage planetary gear group.

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