CN204472696U - Safety door automatic stepping after rotary school bus - Google Patents
Safety door automatic stepping after rotary school bus Download PDFInfo
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- CN204472696U CN204472696U CN201520106239.7U CN201520106239U CN204472696U CN 204472696 U CN204472696 U CN 204472696U CN 201520106239 U CN201520106239 U CN 201520106239U CN 204472696 U CN204472696 U CN 204472696U
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- step plate
- safety door
- rotary
- school bus
- support
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Abstract
The utility model relates to safety door automatic stepping after a kind of rotary school bus, belongs to auto parts and components technical field of structures.Be characterized in that the mouth of cylinder is connected with rocking arm, rocking arm is connected with step plate, and cylinder promotes rocking arm and drives step plate to rotate around the axis 90 degree, realizes the rotary extension of step plate.Support is equipped with in the both sides of step plate, and support is for installing safety door automatic stepping after fixing rotary school bus.Step plate of the present utility model edge under rear bumper, can reduce along the diff-H with step plate under safety door, and step plate stretches out while rear safety door is opened, and ensures that in emergency circumstances driver and conductor escapes safety.During normal driving, safety door is in closed condition, and flexible retraction of marking time, ensure that traffic safety.
Description
Technical field
The utility model relates to safety door automatic stepping after a kind of school bus belonged in technical field of automobile parts.
Background technology
In recent years, China's specialty school bus development is very fast, and the safety of people to school bus is paid attention to further, for making in emergency circumstances driver and crew's energy safe escape, most school bus devises safety door on back wall, along the upper edge being exactly generally rear bumper under rear safety door, terrain clearance is all at more than 700mm, if automatic stepping under installing existing passenger door, height distance will strengthen, in case of emergency, pupil particularly child jumps off escape at this height, is easy to cause danger.
Existing passenger vehicle automatic stepping mainly contains two kinds of versions:
1, lower pendulum-type automatic telescopic is marked time: keystone configuration as shown in Figure 3, it adopts cylinder 11 to promote curved rocking arm 12, promote rocking arm 14 by adjust bar 13 again, drive the parallel four-bar linkage 16 be made up of rocking arm 14, step plate 15 and support 17 etc., realize the automatic telescopic of step plate 15.In Fig. 3 20 refers to step plate opening position, and 21 refer to that step plate is closed the door position, and 22 is connecting rod support.During enabling, after pressurized air enters cylinder 11 from tail end, promote piston and move ahead, driven marked time by curved rocking arm 12, adjust bar 13, rocking arm 14, making to mark time declines and stretches out, and passenger can get on and off; At closing time, after pressurized air enters cylinder 11 from front end, piston rod shrinks, and is driven marked time by curved rocking arm 12, adjust bar 13, rocking arm 14, makes to mark time to shrink and carry to stretch near support 17.When step plate stretches out, fall certain distance, the height of rear bumper is generally at about 300mm, interfere for preventing connecting rod 18 grade and rear bumper, mark time when installing and also need to move down certain distance, by the impact of these factors, the drop along distance step plate under safety door is still larger, can not meet in emergency circumstances so existing lower pendulum-type automatic telescopic is marked time, the safe escape requirement of pupil particularly child.
2, connecting rod flat push type safety of school bus door is flexible marks time: keystone configuration as shown in Figure 4, it is connected with one end of connecting rod mechanism by the mouth of cylinder, cylinder promotes connected connecting rod, drivening rod mechanism fore and aft motion, the step plate that connecting rod promotes to be connected with its other end again moves, and realizes the horizontal extension of step plate.Marking time of this kind of structure in use mainly finds that there are the following problems:
(1), connecting rod mechanism 16 is generally made up of six roots of sensation cross link, then is connected with cylinder, step plate by various bearing, axle etc., and structure is more complicated.The connecting rod mechanism 16 of horizontal positioned is subject to the impact of himself gravity, working accuracy etc.; middle part can be produced be bent downwardly; change the direction of transfer of cylinder thrust; connecting rod is made to produce flexural deformation; often there will be that step plate is flexible to have some setbacks; situation about even cannot stretch out, and lose due effect of marking time.
(2), cylinder by support be fixed on mark time rear side, take the space of vehicle fore-and-aft direction.And the spare tyre 19 of part vehicle is placed on back axle rear portion, as used, this kind of pattern is flexible marks time, and the installing space of spare tyre 19 will be affected (as shown in Figure 5).
Summary of the invention
The purpose of this utility model is to solve that complex structure that above-mentioned prior art exists, pedal flexiblely have some setbacks, take up room the technological deficiency such as large, so provide a kind of be arranged on school bus after safety door bottom, can open and close with safety door and automatic rotation stretches out and retracts, have that simple structural design is reasonable, safety door automatic stepping after the safe and reliable rotary school bus that operates.
To achieve these goals, the utility model have employed following technical scheme:
Safety door automatic stepping after rotary school bus, level is installed on below the rear bumper of safety door after school bus, special character is to comprise support 4, and the cylinder 1 be installed on support 4 and step plate 2, described support 4 has train wheel bridge 4-1 and lower plate 4-2, described step plate 2 is positioned at the mezzanine space that described train wheel bridge 4-1 and lower plate 4-2 is formed, and by rotating shaft 6, a pivot angle end of described step plate 2 is movably hinged on described support 4, described cylinder 1 output shaft end is connected by Rocker arm 5 with between the angle end of described step plate 2, described Rocker arm 5 one end and described cylinder 1 output shaft end rotational pin are connected together, the other end is fixedly connected with the pivot angle end of described step plate 2, when described cylinder 1 piston moves ahead, cylinder 1 output shaft end promotes the Rocker arm 5 being connected to its end, and drives whole step plate 26 to rotate the outside flattened to described support 4 around the shaft by Rocker arm 5,
The pivot angle end of described step plate 2 is provided with the axle sleeve 9 for being socketed with described rotating shaft 6, one end of described Rocker arm 5 and axle sleeve 9 weld together of described step plate 2;
In order to increase the Joint strenght between described step plate 2 and described rotating shaft 6 and Rocker arm 5, step plate 2 edge at described axle sleeve 9 place is provided with strengthens gusset 10;
More have to make the rotary extension of whole step plate 2 intensity that rear step plate 2 is stretched out in stability and increase, the opposite side in opposite directions of the pivot angle end on described step plate 2 is provided with roller supporting arm 3;
In order to coordinate the rotation of described roller supporting arm 3, between the train wheel bridge 4-1 of described support 4 and lower plate 4-2, be provided with the upper and lower support plate 8 consistent with described roller supporting arm 3 sliding trace;
Described cylinder 1 is controlled by the electromagnetic valve 7 be communicated with it, by adopting the inductive switch synchronous with rear safety door switch, Controlling solenoid valve 7, realizes step plate safety door switch and stretch out or retract subsequently.
Safety door automatic stepping after the rotary school bus of the utility model, reasonable in design is simple and direct, operate safety and stability, be arranged on the rear safety door bottom of school bus, take up room rationally, and the height under effectively reducing safety door between edge and step plate, ensure that the fast-escape of in emergency circumstances occupant.
Accompanying drawing explanation
Fig. 1: safety door automatic stepping retracted mode structural representation after the rotary school bus of the utility model;
Fig. 2: after the rotary school bus of the utility model, safety door automatic stepping stretches out status architecture schematic diagram;
Fig. 3: existing lower pendulum-type automatic telescopic is marked time schematic diagram;
Fig. 4: existing school bus Special safety door is marked time schematic diagram;
Fig. 5: existing school bus Special safety door is marked time and affected spare tyre installing space schematic diagram;
Fig. 6: rocker structure schematic diagram;
Fig. 7: step plate structural representation;
Fig. 8: supporting structure schematic diagram;
The left view of Fig. 9: Fig. 7;
In the drawings, 1, cylinder, 2, step plate, 3, roller supporting arm, 4, support, 4-1, train wheel bridge, 4-2, lower plate, 5, rocking arm, 6, rotating shaft, 7, electromagnetic valve, 8, upper and lower support plate, 9, axle sleeve, 10, strengthen gusset.
Detailed description of the invention
Referring to accompanying drawing, provide detailed description of the invention of the present utility model, be used for being further described structure of the present utility model.
Embodiment 1
After the rotary school bus of the present embodiment, safety door automatic stepping is (with reference to Fig. 1-2, Fig. 6-9), level is arranged on below the rear bumper at safety door place after school bus, comprise support 4, and the cylinder 1 be installed on support 4 and step plate 2, described support 4 has train wheel bridge 4-1 and lower plate 4-2, described step plate 2 is positioned at the mezzanine space that described train wheel bridge 4-1 and lower plate 4-2 is formed, and by rotating shaft 6, a pivot angle end of described step plate 2 is movably hinged on described support 4, described cylinder 1 output shaft end is connected by Rocker arm 5 with between the angle end of described step plate 2, described Rocker arm 5 one end and described cylinder 1 output shaft end rotational pin are connected together, the other end is fixedly connected with the pivot angle end of described step plate 2, when described cylinder 1 piston moves ahead, cylinder 1 output shaft end promotes the Rocker arm 5 being connected to its end, and drives whole step plate 26 to rotate the outside flattened to described support 4 around the shaft by Rocker arm 5, the pivot angle end of described step plate 2 is provided with the axle sleeve 9 for being socketed with described rotating shaft 6, one end of described Rocker arm 5 and axle sleeve 9 weld together of described step plate 2, in order to increase the Joint strenght between described step plate 2 and described rotating shaft 6 and Rocker arm 5, step plate 2 edge at described axle sleeve 9 place is provided with strengthens gusset 10, more have to make the rotary extension of whole step plate 2 intensity that rear step plate 2 is stretched out in stability and increase, the opposite side in opposite directions of the pivot angle end on described step plate 2 is provided with roller supporting arm 3, in order to coordinate the rotation of described roller supporting arm 3, between the train wheel bridge 4-1 of described support 4 and lower plate 4-2, be provided with the upper and lower support plate 8 consistent with described roller supporting arm 3 sliding trace, described cylinder 1 is controlled by the electromagnetic valve 7 be communicated with it, by adopting the inductive switch synchronous with rear safety door switch, Controlling solenoid valve 7, realizes step plate safety door switch and stretch out or retract subsequently.
The feature of the present embodiment is that the mouth of cylinder 1 is connected with Rocker arm 5, and rocking arm is connected with step plate 2, and cylinder 1 promotes Rocker arm 5 and drives step plate 26 to rotate 90 degree around the shaft, realizes the rotary extension of step plate.
Attachedly Figure 2 shows that step plate stretches out status architecture schematic diagram, cylinder 1 promotes Rocker arm 5, step plate 2 is driven 6 to rotate 90 degree around the shaft, the automatic rotation realizing step plate stretches, for stability of rotation and increase stretch out after intensity, devise roller supporting arm 3 especially, effectively ensure that the rotation of step plate 2 safety and steady is stretched out (or retraction) and the support strength after stretching out.
Cylinder 1 and electromagnetic valve 7 UNICOM, by adopting the inductive switch synchronous with rear safety door switch, control two-bit triplet electromagnetic valve, realizes step plate safety door switch and stretch out or retract subsequently.
Cylinder 1 and step plate 2 are level and install.
After the rotary school bus of the utility model, the concrete mode of safety door automatic stepping is as follows:
When rear safety door opens the door, inductive switch is connected, and electromagnetic valve 7 is powered, realize pressurized air commutation, after pressurized air enters cylinder 1 from induction opening, move after promoting piston, drive step plate 2 rotary motion, step plate 2 is horizontally rotated and stretches out, namely passenger gets off by step plate.
At closing time, inductive switch disconnects rear safety door, electromagnetic valve 7 power-off, realizes pressurized air commutation, after pressurized air enters cylinder 1 from another pore, promotes piston and moves ahead, drive step plate 2 rotary motion, make step plate horizontally rotate retraction.
The utility model advantage:
1, use cylinder to promote rocking arm, drive step plate to rotate around the axis 90 degree, the automatic rotation realizing step plate stretches, and structure is simple, easy to install.
2, step plate installs that to take vehicle fore-and-aft direction space less.
3, step plate level is arranged on below the rear bumper at safety door place after school bus, and step plate is edge under rear bumper, to reduce under safety door along the diff-H with step plate, effectively can ensure that in emergency circumstances driver and conductor escapes safety.
4, rear safety door open while step plate stretch out, for safe escape wins the quality time.
5, the rotation of step plate is stretched out or is retracted and automatically to be controlled by the state of inductive switch according to rear safety door, avoids the potential safety hazard that manual operation may cause.
When 6, normally driving a vehicle, safety door is in closed condition, and flexible retraction of marking time, actv. ensure that traffic safety.
Claims (6)
1. safety door automatic stepping after rotary school bus, be characterised in that and comprise support (4), and the cylinder (1) be installed on support (4) and step plate (2), described support (4) has train wheel bridge (4-1) and lower plate (4-2), described step plate (2) is positioned at the mezzanine space that described train wheel bridge (4-1) and lower plate (4-2) are formed, and by rotating shaft (6), a pivot angle end of described step plate (2) is movably hinged on described support (4), be connected by rocking arm (5) between described cylinder (1) output shaft end and the angle end of described step plate (2), described rocking arm (5) one end and described cylinder (1) output shaft end rotational pin are connected together, the other end is fixedly connected with the pivot angle end of described step plate (2).
2. safety door automatic stepping after rotary school bus as claimed in claim 1, it is characterized in that, the opposite side in opposite directions of the pivot angle end on described step plate (2) is provided with roller supporting arm (3).
3. safety door automatic stepping after rotary school bus as claimed in claim 2, it is characterized in that, between the train wheel bridge (4-1) of described support (4) and lower plate (4-2), be provided with the upper and lower support plate (8) consistent with described roller supporting arm (3) sliding trace.
4. safety door automatic stepping after rotary school bus as claimed in claim 3, it is characterized in that, the pivot angle end of described step plate (2) is provided with axle sleeve (9), one end of described rocking arm (5) and axle sleeve (9) weld together of described step plate (2) for being socketed with described rotating shaft (6).
5. safety door automatic stepping after rotary school bus as claimed in claim 4, it is characterized in that, step plate (2) edge at described axle sleeve place is provided with strengthens gusset (10).
6. safety door automatic stepping after rotary school bus as claimed in claim 1, it is characterized in that, described cylinder (1) is controlled by the electromagnetic valve be communicated with it (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520106239.7U CN204472696U (en) | 2015-02-14 | 2015-02-14 | Safety door automatic stepping after rotary school bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520106239.7U CN204472696U (en) | 2015-02-14 | 2015-02-14 | Safety door automatic stepping after rotary school bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204472696U true CN204472696U (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520106239.7U Active CN204472696U (en) | 2015-02-14 | 2015-02-14 | Safety door automatic stepping after rotary school bus |
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| CN (1) | CN204472696U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106004680A (en) * | 2016-05-16 | 2016-10-12 | 厦门金龙联合汽车工业有限公司 | Rotation type active step |
-
2015
- 2015-02-14 CN CN201520106239.7U patent/CN204472696U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106004680A (en) * | 2016-05-16 | 2016-10-12 | 厦门金龙联合汽车工业有限公司 | Rotation type active step |
| CN106004680B (en) * | 2016-05-16 | 2019-01-04 | 厦门金龙联合汽车工业有限公司 | A kind of rotary activity is marked time |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |