CN201427610Y

CN201427610Y - Engine compartment cover supporting rod mechanism

Info

Publication number: CN201427610Y
Application number: CN2009201324337U
Authority: CN
Inventors: 宋磊; 朱江磊; 王东
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2009-05-27
Filing date: 2009-05-27
Publication date: 2010-03-24
Anticipated expiration: 2019-05-27

Abstract

The utility model relates to an engine compartment cover supporting rod mechanism, which comprises a piston rod and a casing rod. The supporting rod mechanism is characterized in that a first end of the piston rod is positioned inside the casing rod; a locking mechanism is fixedly mounted close to the first end of the piston rod on the piston rod; a locking hole is arranged close to a first end ofthe casing rod on the casing rod; the piston rod can slide correspondingly to the casing rod inside the casing rod; when the position of the locking mechanism on the piston rod corresponds to that ofthe locking hole on the casing rod, the locking mechanism can automatically lock the corresponding movement between the piston rod and the casing rod; a second end of the piston rod is fixedly connected with an engine compartment cover; a second end of the casing rod can be rotatably connected into an engine compartment. By arranging the piston rod sliding inside the casing rod and mounting the locking mechanism on the piston rod, the engine compartment cover supporting rod mechanism achieves the purpose of automatically supporting the engine compartment cover when the engine compartment cover is opened and simplifying the opening process of the engine compartment cover.

Description

A kind of engine compartment cover strut mechanism

Technical field

The utility model relates to a kind of vehicle engine hatch cover strut mechanism, particularly a kind of telescopic vehicle engine hatch cover strut mechanism.

Background technology

Present vehicle engine hatch cover supporting mechanism generally uses the form of gas spring structure or single strut.The engine compartment covers that use one or two gas springs to support, light during switch, can alleviate the working strength of switch hatchcover, but gas spring cost height is unfavorable for auto cost control, the possibility that also has certain inefficacy to hurt sb.'s feelings.In general, the unlatching of engine compartment cover is not frequent, therefore economic class vehicle generally selects for use single strut to support engine compartment cover, single strut supporting construction is simple, with low cost, arrange easily, when but single strut supports, when opening engine compartment cover, must work simultaneously by both hands, promptly on the other hand engine compartment cover is upwards lifted, the another hand goes to take strut bar that engine compartment cover is supported, and strut must be fixed to certain fixing position, unfamiliar people also needs the long time to seek the riding position of strut, and this makes that opening engine compartment cover becomes pretty troublesome.

The utility model content

The technical problems to be solved in the utility model is, the complex process of opening engine compartment cover two Handball Association's biconditional operations of needs and causing, promptly a hand upwards starts engine compartment cover, an other hand goes the process of taking the engine compartment cover strut and then engine compartment cover being propped up, thereby provide a kind of can be along with engine compartment cover moves up and automatically elongation and finally support the strut mechanism of engine compartment cover, when killing engine hatchcover, this strut mechanism can shrink in the engine compartment of setting out automatically.

For solving the problems of the technologies described above, the technical scheme that the utility model adopted is, a kind of engine compartment cover strut mechanism, comprise piston rod, loop bar, it is characterized in that, first end of piston rod is positioned at loop bar inside, be fixed with lockable mechanism near near piston rod first end on the piston rod, be provided with locking hole near near loop bar first end on the loop bar, described piston rod can slide by relative loop bar in loop bar, when the position of the locking hole on the lockable mechanism on the described piston rod and the loop bar is corresponding, lockable mechanism is relatively moving of locking piston rod and loop bar automatically, second end and the engine compartment cover of piston rod are fixedly linked, and loop bar second end is rotationally connected with in the machinery space.

The utility model is realized Telescopic by the slide relative that adopts piston rod and loop bar, and fixes the relative motion of loop bar and piston rod, the feasible relative fixed that guarantees the position of piston rod and loop bar when needed by lock pin; Piston rod and engine compartment cover are fixedly linked, thereby the motion conditions of piston rod is consistent with the motion conditions of engine compartment cover, the loop bar lower end utilizes spherical hinge to link to each other with somewhere in the machinery space, thereby has realized the rotational motion function of loop bar, has guaranteed that engine compartment cover can open smoothly.When opening engine compartment cover, piston rod is along with engine compartment cover moves, and thereby piston rod and loop bar produce to relatively move and have realized the function of automatic elongation, behind lockable mechanism lockup piston bar and loop bar, the just relative loop bar of piston rod is fixed and can not be relatively moved in generation, can produce stable supporting role this moment to engine compartment cover, do not need in the whole process to remove to help strut with hand, and be to extend and finish automatically to the support of engine compartment cover by relatively moving of piston rod and loop bar; When killing engine hatchcover, the end that only with hand is pressed lock pin makes lock pin return certain displacement in loop bar, next just make lock pin return to loop bar inside by the mutual action between loop bar and the lock pin, piston rod and loop bar generation relatively move and shorten, and shrink fully in the engine compartment of setting out up to complete closure piston bar of driving engine and loop bar.So it is very simple that the operation of the open and close of engine compartment cover just becomes.

Description of drawings

Fig. 1 is the overall schematic of a kind of embodiment of the utility model engine compartment cover strut mechanism;

Fig. 2 is the cross-sectional schematic of a kind of lockable mechanism 4 that the utility model adopted;

Fig. 3 is subjected to the pressure effect scheme drawing of the hole wall of the locking hole 32 on the loop bar 3 for lock pin 41;

Fig. 4 is loop bar and the structural representation after having sulculus on the lock pin that has two locking holes;

Fig. 5 is the state after the unlatching of engine compartment cover 2.

The specific embodiment

As shown in Figure 1, overall schematic for a kind of embodiment of the utility model engine compartment cover strut mechanism, piston rod 1 second end 12 is fixed together with engine compartment cover 2, loop bar 3 second ends are connected in somewhere in the machinery space with rotating form, local according to the difference that concrete vehicle can be connected this end of cover 3 bars in the machinery space, select for use spherical hinge 5 to be rotationally connected with on the interior sheet metal component of machinery space in the utility model, spherical hinge 5 bonded assembly benefits are rotations that any direction can take place loop bar 3, help so very much the open and close of engine compartment cover 2, promptly when opening engine compartment cover 2, thereby loop bar 3 upwards rotates and props up engine compartment cover, when killing engine hatchcover 2, thereby loop bar 3 rotates and helps loop bar 3 and shrink in the limited machinery space in space; First end 11 of piston rod 1 protrudes into loop bar inside, and piston rod 1 can be in loop bar 3 relatively loop bar 3 make sliding motion, near near piston rod first end 11 lockable mechanism 4 is being housed on the piston rod 1.

As shown in Figure 3, lockable mechanism 4 is positioned on the piston rod 1, this lockable mechanism comprises lock pin 41, spring 411 and base 412, lock pin 41 is positioned at piston rod 1, and can stretch out from the locking hole on the loop bar 3 32 (this locking hole 32 will be described below), lock pin 41 lower ends connect an end of spring 411, and the spring other end is connected on the base 412 that is fixed on the piston rod 1.Spring has the effect of a thrust to lock pin 41, and under the thrust of spring, lock pin 41 just is able to stretch out from the locking hole 32 of loop bar 3 just; When with pressed by external force lock pin 41, thus lock pin 41 compression springs, final spring shrinks, thus lock pin 41 is return the locking effect that obtains contacting in the piston rod 1 to piston rod and loop bar slide relative.

Be illustrated in figure 2 as the cross-sectional schematic of the another kind of lockable mechanism 4 that the utility model adopts, this lockable mechanism 4 is similar to now the structure of telescopic ball-point pen automatically, this lockable mechanism 4 comprises lock pin 41, interior pipe 42, spring 43, base 44, first end of lock pin 41 has annular ratchet 45, second end of interior pipe 42 also has annular ratchet 46, and the second end small diameter portion of interior pipe 42 protrudes in the cavity of second end of lock pin 41, in spring 43 1 ends put in the cavity of pipe 42 first end, forming conflicts connects, its other end and base 44 are fixed together, base 44 is fixed on the piston rod 1, have several guide rails 47 on the inwall of base 44, this guide rail 47 plays a part to lock pin 41 motion guides.When using second end of pressed by external force lock pin 41, the annular ratchet 46 of pipe 42 second ends in annular ratchet 45 pushings of lock pin 41 first ends, interior pipe 42 pushing springs 43, spring 43 is compressed, so interior pipe 42 moves down, lock pin 41 also and then moves down, interior pipe 42 has the trend of a rotation when moving down, because the annular ratchet of the lock pin 41 internally application forces that produce of pipe 42 is not axial along interior pipe 42, but with interior pipe 42 certain angle axially arranged, but because the barrier effect of base 44 inwall upper rails 47 makes interior pipe 42 not rotate, when the annular ratchet 46 superconduction rails 47 of interior pipe 42 second ends terminal, interior pipe 42 rotates, thereby rotate a low-angle, in these rear rail 47 ends just in time are limited on pipe 42 the annular ratchet 46, this moment, lock pin 41 arrived the position of inner end, on annular ratchet 45 another inclined-plane facing to the annular ratchet 46 of interior pipe 42 of lock pin 41 first ends; When lock pin 41 is in the position of inner end, give downward external force of second end of lock pin 41 again, pipe 42 can move down under the pressure of lock pin 41 in same, when the vertexs in the middle of interior pipe 42 moves down into its annular ratchet 46 surpass guide rail 47 terminal, one low-angle can take place and rotate in interior pipe 42, remove external force effect this moment to lock pin 41 second ends, interior pipe 42 can move up by relative base 44 under the elastic force effect of spring 43, rotate simultaneously, manage in the groove 48 of 46 of 42 annular ratchets in final guide rail 47 sticks into, lock pin 41 is positioned at the position of outermost end this moment.Second end of the utility model decision design lock pin 41 is circular arc or inclined-plane, and its effect mainly is to help loop bar 3 it is exerted pressure, and detailed content will be narrated hereinafter.

Be provided with locking hole 32 near near loop bar first end on the loop bar 3, the size of locking hole 32 is corresponding with the diameter of lock pin 41, and it makes lock pin 41 to pass freely, and in a word, the diameter of locking hole 32 is bigger slightly than the diameter of lock pin 41.Above mention second end of lock pin 41 is made circular arc or bevelled shape, this mainly is to consider from the stressing conditions of lock pin 41, as shown in Figure 3, be subjected to the pressure effect scheme drawing of the hole wall of the locking hole 32 on the loop bar 3 for lock pin 41, when piston rod 1 relative loop bar has slide relative trend (when killing engine hatchcover 2) as need, 32 meetings and second end in contact of lock pin 41 and the effect that produces power of locking hole wall, the direction of this power F is perpendicular to the normal direction of contact surface, if contact surface is the inclined-plane, then behind decomposition of force, wherein a component F1 is just along the axis direction of lock pin, thereby this component produces the pressure effect to lock pin 41, and lock pin 41 is passed to inner end; If contact surface then can not produce along the component of lock pin 41 axis directions for the inclined-plane, thereby can not make lock pin 41 generations move to inner end.The hole wall of decision design locking hole 32 also has and lock pin 41 terminal inclined-planes or cooresponding inclined-plane of arc surface or arc surface.

Strut working process of mechanism and principle to engine compartment cover is described below, as shown in Figure 1, this moment, engine compartment cover 2 was in the scheme drawing of closed condition, under this state, open engine compartment cover, then captive joint with engine compartment cover 2 because of piston rod 1, so piston rod 1 is along with engine compartment cover 2 upward movements, 11 at first end of piston rod 1 in loop bar 3 relatively loop bar 3 slide, rotational motion upwards takes place around the spherical hinge 5 of its lower end in 3 of loop bars.When piston rod 1 slides into lock pin 41 in the lockable mechanism 4 on it and aligns with locking hole 32 on the loop bar 3 in loop bar 3, thereby again engine compartment cover 2 is upwards lifted certain distance and make piston rod 1 relative loop bar 3 certain distance that upwards slides again, make the hole wall of the locking hole 32 on the loop bar 3 apply a contact pressure to lock pin 41, thereby cause the motion of lockable mechanism 4 and move certain displacement, and then put down engine compartment cover 2 at leisure, piston rod 1 also and then moves down, when lock pin 41 is aimed at locking hole 32 once more, lock pin 41 will eject from locking hole 32, piston rod 1 was blocked and can not make sliding motion by relative again loop bar 3 by lock pin 41 this moment, so engine compartment cover 2 was just propped up and can not be moved up and down again by piston rod 1 and loop bar 3 this moment, had finished the unlatching of engine compartment cover 2.As shown in Figure 5, state for the unlatching of engine compartment cover 2, this moment, piston rod 1 and loop bar 3 supported engine compartment cover 2 together (for first kind of lockable mechanism mentioned above, when lockable mechanism just can stretch out from locking hole punctual lock pin with locking hole for the first time, thereby move again on not needing to continue and given 41 1 pressure of lock pin).

In the process of above unlatching engine compartment cover 2, only need engine compartment cover 2 upwards be raised to lock pin 41 and get final product, and not need to go in addition with hand steered support linkage from locking hole 32 ejections with hand, simplified the open operation of engine compartment cover 2.In whole opening process, the engine compartment cover strut mechanism that is made up of piston rod 1 and loop bar 3 has just realized the operation of propping up to engine compartment cover automatically.

When killing engine hatchcover 2, need engine compartment cover 2 be buttressed with a hand, the another hand removes second end of pressing lock shotpin 41, making lock pin 41 move downward its second end end face part contacts with the hole wall of the locking hole 32 of loop bar 3, come up this moment and buttress that hand of engine compartment cover 2, engine compartment cover 2 moves downward under the action of gravity of self, piston rod 1 also and then moves downward, this moment the locking hole 32 on the loop bar 3 the hole wall effect that just lock pin 41 ends produced a pressure, lock pin 41 continues to move downward under the effect of this pressure, return to the inside of loop bar 3 fully up to the end of lock pin 41, this moment, lock pin 41 substantially arrived the inner end of the lock pin 41 of lockable mechanism 4 self decision.Engine compartment cover 2 continues to move downward, and first end of piston rod 1 just slides in loop bar 3 again, and loop bar 3 around the spherical hinge 5 of its lower end downward rotation takes place, and till engine compartment cover 2 was closed fully, loop bar 3 and piston rod 1 just shrank in the engine compartment of setting out.

As preferably, can be provided with two locking holes near near loop bar first end on the loop bar 3, as shown in Figure 4, these two locking hole size unanimities, loop bar 3 axially at intervals.Like this can be according to individual demand, which locking hole lock pin 41 is arranged in when selecting to open engine compartment cover, thereby selects the difference degree of opening into of engine compartment cover 2.

As preferably, can have sulculus 6 near near the lock pin end on the lock pin 41, the width of described sulculus 6 is bigger slightly than the wall thickness of loop bar 3.As shown in Figure 4, in such cases, after opening engine compartment cover 2, the sulculus 6 on the lock pin 41 and the hole wall of the locking hole 32 on the loop bar 3 are fastened togather mutually, can prevent lock pin 41 like this because when being subjected to accident collision and return the engine compartment cover 2 that causes opening to loop bar 3 inside and fall automatically, cause unnecessary damages.Kill engine and should stir lock pin 41 with hand to locking hole 32 centers earlier before the hatchcover 2, and then push downwards lock pin 41 is return to loop bar 3 inside, piston 1 bar just slides in loop bar then, and engine compartment cover 2 moves down, till closing fully.

Claims

1, a kind of engine compartment cover strut mechanism, comprise piston rod (1), loop bar (3), it is characterized in that, the first end position (11) of piston rod (1) is in loop bar (3) inside, near going up close piston rod first end (11), piston rod (1) is fixed with lockable mechanism (4), near going up close loop bar first end (31), loop bar (3) is provided with locking hole (32), described piston rod (1) can slide by relative loop bar (3) in loop bar (3), when the position of the locking hole (32) on the lockable mechanism (4) on the described piston rod (1) and the loop bar (3) is corresponding, lockable mechanism (4) is relatively moving of locking piston rod (1) and loop bar (3) automatically, second end (12) of piston rod (1) is fixedly linked with engine compartment cover, and loop bar (3) second ends (33) are rotationally connected with in the machinery space.

2, engine compartment cover strut according to claim 1 mechanism, it is characterized in that, described lockable mechanism (4) comprises lock pin (41), spring (43) and base (44), spring (43) one ends and base (44) fixed-link, spring (43) other end are connected with lock pin (41) and are supporting lock pin (41).

3, engine compartment cover strut according to claim 3 mechanism is characterized in that the end of described lock pin (41) is circular shape or inclined-plane.

4, according to claim 2 or 3 described engine compartment cover strut mechanisms, it is characterized in that described lock pin (41) is gone up near near the lock pin end and had sulculus (6), the width of described sulculus (6) is bigger slightly than the wall thickness of loop bar (3).

5, engine compartment cover strut according to claim 1 mechanism, it is characterized in that, described lockable mechanism (4) comprises lock pin (41), base (44), spring (43), interior pipe (42), described base (44) and piston rod (1) fixed-link, spring (43) one ends and base (44) are connected, its other end forms to conflict with interior pipe (42) and contacts, pipe (42) rear end has annular ratchet (46) in described, the front end of lock pin (41) has annular ratchet (46) with interior pipe (42) rear end to the annular ratchet (45) that cooperates, and has the guide rail (47) to lock pin (41) guiding on the inwall of base (44).

6, engine compartment cover strut according to claim 1 mechanism is characterized in that, described loop bar (3) is gone up near near loop bar first end and is provided with two locking holes, these two locking holes along loop bar axially at intervals.