Patent Application
20160325718
This application is based upon and claims the benefit of priority of the prior Japanese Patent Application No. 2014-0017766, filed on Jan. 31, 2014, the entire contents of which are incorporated herein by reference.
The present application relates to a backdown preventing device for vehicular pedal device, which prevents a tread section of an operation pedal from moving backwards to a driver's seat side when the dash panel is displaced backwards to the driver's seat side.
There is known of a backdown preventing device that is related to a vehicular pedal device including (a) a pedal bracket arranged to a dash panel, (b) an operation pedal arranged to the pedal bracket pivotally about an axis of a first support shaft, whose tread section provided in a lower-end portion thereof is trod towards a front side of the vehicle, and (c) an intermediate lever arranged to the pedal bracket pivotally about an axis of a second support shaft parallel to the first support shaft, the intermediate lever being coupled to the operation pedal via a coupling link and being made to pivot mechanically in an outputting direction in connection with a tread operation of the operation pedal to make a predetermined output member operate, wherein (d) the tread section of the operation pedal is prevented from being moved backwards to the driver's seat side when the dash panel is displaced backwards to the driver's seat side (refer to Patent Documents 1, 2).
Furthermore, a backdown preventing member 124 is provided on a vehicle body member 122; when a protrusion 126 of the intermediate lever 118 is made into contact with the backdown preventing member 124 based on a difference between backward displacement amounts L1 and L2 of the respective dash panel 102 and vehicle body member 122 at a time of collision (L1>L2), the intermediate lever 118 is pivoted relatively in an outputting direction (vehicle front side), which presses the output member 116 as illustrated by the arrow A in
Patent Document 1: Japanese Laid-open Patent Publication No. H10-324228
Patent Document 2 : Japanese Laid-open Patent Publication No. H11-222156
Patent Document 3: Japanese Laid-open Patent Publication No. 2012-128659
However, such a conventional backdown preventing device for vehicular pedal device is on the assumption that the intermediate lever 118 pivots in the outputting direction while relatively pressing the output member 116, as a result of the intermediate lever 118 coming into contact with the backdown preventing member 124. Therefore, if the output member 116 cannot be pushed inside the brake booster 120 due to distortion of sections at a time of collision, the intermediate lever 118 cannot be pivoted in the outputting direction, thus causing a possibility that the backdown preventing effect cannot be achieved appropriately, which effect prevents the backdown of the tread section 108 by pivoting the operation pedal 110 in the direction of the tread operation.
Patent Document 3 discloses a backdown preventing device that is capable of pivoting the operation pedal in the direction of the tread operation even in a case in which the output member cannot be pushed into the brake booster, however the assumption differs from the above vehicular pedal device that carries out output via the intermediate lever.
The present application was accomplished in view of the above situation, and an object thereof is to appropriately achieve a backdown preventing effect that prevents the backdown of the tread section by making the operation pedal pivot in a direction of the tread operation, even in a case in which the intermediate lever cannot be pivoted in an outputting direction by for example the output member not being able to be pushed in.
In order to attain such object, a first aspect of the embodiment is characterized in that, in a backdown preventing device for vehicular pedal device that includes (a) a pedal bracket arranged to a dash panel; (b) an operation pedal arranged to the pedal bracket pivotally about an axis of a first support shaft, whose tread section provided in a lower-end portion of the operation pedal is trod towards a front side of a vehicle as a tread operation of the operation pedal; and (c) an intermediate lever arranged to the pedal bracket pivotally about an axis of a second support shaft parallel to the first support shaft, the intermediate lever being coupled to the operation pedal via a coupling link and adapted to operate a predetermined output member by being pivoted in an outputting direction mechanically in connection with the tread operation of the operation pedal, (d) the backdown preventing device is adapted to prevent the tread section of the operation pedal from moving backwards toward a driver's seat side when the dash panel is displaced backwards toward the driver's seat side, charactering in that: (e) either one of a first coupling section on a side of the operation pedal of the coupling link or a second coupling section on a side of the intermediate lever of the coupling link is a separable coupling section coupled in a separable manner via a cutout, and (f) a backdown preventing member supported to a vehicle body member provided in a side closer to the driver's seat from the dash panel is provided with a stopper section being adapted to be engaged with the operation pedal at a time of backward displacement of the dash panel to make the operation pedal pivot relatively in the direction of the tread operation, and making the separable coupling section separate to release a connection between the operation pedal and the intermediate lever by the coupling link.
The vehicle body member disposed closer to the driver's seat than the dash panel is for example an instrument panel reinforcement (reinforcement member of an instrument panel) or a cowl bracket; generally, the possibility of the displacement to the driver's seat side, that is to say, towards the back side of the vehicle, or a deformation amount thereto, when a large load is applied from the front of the vehicle such as a time of collision, is smaller compared to the dash panel, and the present application is a technology that prevents the backdown of the tread section of the operation pedal on the assumption that these backward displacement amounts are different.
The object and advantages of the invention will be realized and attained by means of the elements and combinations particularly pointed out in the claims.
It is to be understood that both the forgoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention.
The present application is suitably applicable to a vehicular pedal device in which an output member is arranged projecting out from a dash panel and pivotally connected to an intermediate lever, for example a brake pedal device for a service brake in which an operation rod of a brake booster of a hydraulic brake is coupled to an intermediate lever as an output member. The pedal bracket may just have a single pedal bracket fixedly installed to the dash panel, however it is preferable to attach the pedal bracket across the dash panel and a vehicle body member on the driver's seat side of the dash panel. Two pedal brackets fixedly installed to the respective dash panel and vehicle body member may be connected integrally by being overlapped by each other at a part in which a first support shaft and/or a second support shaft is/are arranged and tightened together.
The second aspect to fourth aspect of the embodiment have the second coupling section fixed detachably to a cutout provided in the intermediate lever, and the second coupling section is equivalent to the separable coupling section of the first aspect of the embodiment. However, in implementing the first aspect of the embodiment, the first coupling section may be fixed detachably to the cutout provided in the operation pedal. Moreover, it is also possible to provide a cutout in the coupling link, which cutout fixes detachably with a connecting pin or the like arranged to the intermediate lever or operation pedal.
In the backdown preventing member of the first aspect of the embodiment, a guide section similar to that of the third aspect of the embodiment is provided as necessary. That is to say, a guide section is provided, which guides the coupling link so that the separable coupling section does not separate and thus the intermediate lever is pivoted in an outputting direction in connection with the operation pedal in a case in which the operation pedal is trod from an initial position, and at a time of backwards displacement of the dash panel, allows for the separable coupling section to escape from a guide region and separate via the cutout. This guide section is configured to be engaged to the coupling link or separable coupling section for example throughout a treading stroke of the operation pedal to prevent the separation, however may be configured to be engaged to the coupling link or the like in just one region where the separation may occur. Depending on a positional relationship of the pair of the coupling sections of the coupling link, it is possible to make the separation impossible when the operation pedal is trod from an initial position, and be separable when pivoted by a predetermined amount in the opposite direction; in this case, the guide section is not necessarily required. The same applies with the guide section of the third aspect of the embodiment.
The intermediate lever is arranged for example in an up-down direction, and is arranged pivotally to the pedal bracket in an intermediate section or a lower-end portion in the up-down direction in such a manner that an output member is connected to an upper portion thereof and is pressed toward the front side of the vehicle. The intermediate lever is for example arranged on a side more front of the vehicle than the operation pedal, however various aspects are possible, such as providing the intermediate lever on an upper portion of the operation pedal. This intermediate lever is made for example to move substantially parallel towards the back side of the vehicle together with the bracket such that the separable coupling section escapes from a guide region of the guide section, when for example the dash panel is made to be displaced backwards; however, this may also be a case in which the intermediate lever is pivoted about the second support shaft in a direction opposite to the outputting direction, via the output member. That is to say, when the backward displacement amount of the second support shaft of the intermediate lever is smaller than a displacement amount of the output member, for example in a case in which the pedal bracket is attached not just to the dash panel but also across the vehicle body member on the driver's seat side, the intermediate lever is pivoted into the opposite direction.
Although suitably used as the backdown preventing member is for example a pedal bracket fixedly installed integrally to the vehicle body member, which pedal bracket supports a second support shaft, or a backdown preventing lever arranged pivotally about the second support shaft and whose tip part is made into contact with the vehicle body member to hinder the pivoting to the back side of the vehicle, various aspects are possible, such as one which is merely integrally fixedly installed to the vehicle body member. The contact section functioning as the stopper section in the fourth aspect of the embodiment is made into contact with the first coupling section of the coupling link, however when implementing the second aspect of the embodiment, this may be made into contact with any part of the operation pedal. An engagement section extending towards the backdown preventing member may be provided in the operation pedal and may be made to engage with the stopper section of the backdown preventing member. In the fifth aspect of the embodiment, a backdown preventing link is arranged across the operation pedal and the backdown preventing member and are connected via a long hole; this long hole, however, may be provided in any of the operation pedal, the backdown preventing member, and the backdown preventing link. In a case in which the long hole is provided in the backdown preventing member, one end portion of the long hole is equivalent to the stopper section, and in a case in which the long hole is provided to the operation pedal, one of the coupling sections to which the long hole is engaged is equivalent to the stopper section. In short, the stopper section is either one on the backdown preventing member side, of the one of the coupling sections and the one end portion of the long hole that are engaged to each other.
The following describes in details of an Example of the present application, with reference to the drawings.
The first pedal bracket 14 also has an intermediate lever 26 arranged pivotally about a second support shaft 24 parallel to the first support shaft 20, on a side more front of the vehicle than the operation pedal 18. The intermediate lever 26 is supported pivotally about an axis of the second support shaft 24 in a lower-end portion thereof and extends upwards, and is coupled to the operation pedal 18 via a coupling link 28 at a middle position in the up-down direction. The upper-end portion of the intermediate lever 26 is connected to an operation rod 32 of the brake booster 30, and by being mechanically pivoted about the second support shaft 24 in an anticlockwise direction (outputting direction) via the coupling link 28 in connection with the tread operation of the operation pedal 18, the operation rod 32 is pressed forwards to generate a brake force. The brake booster 30 is fixedly installed integrally on the engine compartment side of the dash panel 12, and the operation rod 32 is disposed projecting from the dash panel 12 into the vehicle interior. The operation rod 32 is equivalent to the output member.
An instrument panel reinforcement 34 positioned on the driver's seat side of the dash panel 12 has a second pedal bracket 36 fixedly installed integrally thereto. The second pedal bracket 36 is overlapped with the first pedal bracket 14 on both sides of the second support shaft 24, and the two are tightened together with a bolt or like member, to integrally couple each other in a supporting manner. This thus enables to attain a predetermined strength and rigidity required of the pedal bracket. The instrument panel reinforcement 34 is equivalent to the vehicle body member, and generally has a lower possibility of displacement to the driver's seat side, that is to say the back side of the vehicle, or has a lower deformation amount, at a time of receiving a large load from the front of the vehicle at a time of collision or the like, than that of the dash panel 12.
The coupling link 28 is connected relatively pivotally to the operation pedal 18 and the intermediate lever 26 on respective sides, via a respective first connecting pin 40 and second connecting pin 42 that are each parallel to the first support shaft 20. As clearly seen in
On the other hand, the second pedal bracket 36 also functions as a backdown preventing member, and has an opening 50 capable of containing the coupling link 28 therein and is provided with a guide section 52 and a contact section 54 in the vicinity of the opening 50. The guide section 52, when the operation pedal 18 is trod from its initial position, guides the second connecting pin 42 or the coupling link 28 so that the second connecting pin 42 does not detach from the cutout 46 of the intermediate lever 26, and makes the intermediate lever 26 pivot mechanically in the outputting direction in connection with the operation pedal 18, and the guide section 52 is provided linearly based on a circumferential direction whose center is the second support shaft 24. The guide section may be provided in an arc shape towards a circumferential direction whose center is the second support shaft 24.
The guide section 52 is also determined in its length dimension (guide region), to allow for the second connecting pin 42 to escape from the guide section 52 together with the cutout 46 and the second connecting pin 42 to detach from the cutout 46, when the intermediate lever 26 is pivoted in a direction opposite of the outputting direction from the initial position illustrated in
The contact section 54 functions as a stopper section. At the time of the backward displacement of the dash panel 12, the intermediate lever 26 is pivoted in the opposite direction as illustrated in
According to such a brake pedal device 10 of the present Example, the second connecting pin 42 on the intermediate lever 26 side of the coupling link 28 that couples the operation pedal 18 with the intermediate lever 26 is fixed in the cutout 46 provided in the intermediate lever 26; when the dash panel 12 is displaced backwards for example by collision, the operation pedal 18 is made to be engaged to the contact section 54 and is pivoted relatively in the direction of the tread operation, and the second connecting pin 42 is detached from the cutout 46 thus releasing the connection between the operation pedal 18 and the intermediate lever 26 by the coupling link 28. Accordingly, the operation pedal 18 is pivoted in the direction of the tread operation relatively regardless of the behavior of the intermediate lever 26, and the backdown of the tread section 22 is prevented.
That is to say, in the present Example, the backdown preventing device 56 is constructed of for example the second pedal bracket 36 functioning as the backdown preventing member, the first connecting pin 40, the second connecting pin 42, and the cutout 46. Furthermore, this backdown preventing device 56 does not make the intermediate lever 26 pivot relatively in the outputting direction at the time when the dash panel 12 is displaced backwards, but makes the second connecting pin 42 of the coupling link 28 detach from the cutout 46 of the intermediate lever 26 by the contact section 54 provided in the second pedal bracket 36 engaging with the operation pedal 18, to release the connection of the intermediate lever 26 with the operation pedal 18, and makes the operation pedal 18 pivot relatively in the direction of the tread operation. Therefore, regardless of whether or not the pivoting in the outputting direction of the intermediate lever 26 is possible due to the operation rod 32 not being able to be pushed in, the backdown of the tread section 22 of the operation pedal 18 is prevented as appropriate, and the backdown preventing effect is stably attainable thereafter.
Moreover, in the present Example, the second pedal bracket 36 includes the guide section 52; when the operation pedal 18 is trod from the initial position, the guide section 52 guides so that the second connecting pin 42 does not detach from the cutout 46 of the intermediate lever 26 and that the intermediate lever 26 is pivoted in the outputting direction in connection with the operation pedal 18, whereas at the time of backward displacement of the dash panel 12, the guide section 52 allows for the second connecting pin 42 to escape from the guide region and detach from the cutout 46. Therefore, at the time of tread operation of the operation pedal 18, the intermediate lever 26 is securely pivoted in the outputting direction in connection with the operation pedal 18 without the second connecting pin 42 being detached from the cutout 46, to press the operation rod 32, whereas when the dash panel 12 is displaced backwards at the time of collision or the like, the second connecting pin 42 escapes from the guide region by the guide section 52. This allows for the second connecting pin 42 to detach from the cutout 46, and by the operation pedal 18 becoming engaged with the contact section 54 and be pivoted relatively in the direction of the tread operation, the second connecting pin 42 is detached from the cutout 46, and the connection between the operation pedal 18 and the intermediate lever 26 by the coupling link 28 is securely released. In other words, it is possible to detach the second connecting pin 42 from the cutout 46 and securely release the connection between the operation pedal 18 and the intermediate lever 26, while ensuring freedom in settings of connection position of the first connecting pin 40 and the second connecting pin 42, that is to say, the freedom in settings of the load transfer behavior by the coupling link 28.
Moreover, in the present Example, the contact section 54 made into contact with the first connecting pin 40 arranged to the operation pedal 18 at the time of backwards displacement of the dash panel 12 is provided integrally to the second pedal bracket 36 as a stopper section, and thus the number of members is small and the configuration is made easily and at low costs.
Next described is another Example of the present application. Parts that are substantially common to the above Example are designated with identical reference signs, and their detailed descriptions have been omitted.
The guide section 70 is also determined in its disposed position in such a manner that, when the intermediate lever 26 is pivoted in the opposite direction from the initial position as illustrated in
An end portion of the backdown preventing link 74 on the operation pedal 18 side is connected relatively pivotally to the first connecting pin 40 arranged to the operation pedal 18, and the other end portion is connected relatively pivotally to the long hole 72 provided in the backdown preventing lever 64 via a third connecting pin 76. The long hole 72 is provided having a predetermined length linearly towards a circumferential direction whose center is the second support shaft 24, so that the intermediate lever 26 does not hinder the pivoting in the outputting direction in connection with the tread operation of the operation pedal 18, in other words, to not hinder the tread operation of the operation pedal 18, at the time when the operation pedal 18 is trod from the initial position.
On the other hand, when the intermediate lever 26 is pivoted in the opposite direction as illustrated in
As such, even in the brake pedal device 60 of the present Example, the second connecting pin 42 escapes from the guide region by the guide section 70 and the second connecting pin 42 is allowed to detach from the cutout 46 when the dash panel 12 is displaced backwards for example at the time of collision, and by the third connecting pin 76 of the backdown preventing link 74 be in contact with the one end portion 72a of the long hole 72, the operation pedal 18 is relatively pivoted in the direction of the tread operation. Accordingly, the second connecting pin 42 is detached from the cutout 46 and the connection between the operation pedal 18 and the intermediate lever 26 by the coupling link 28 is released; this thus allows for the operation pedal 18 to pivot relatively in the direction of the tread operation regardless of the behavior of the intermediate lever 26, and prevent the backdown of the tread section 22.
That is to say, in the present Example, the backdown preventing device 78 is constructed of for example the backdown preventing lever 64 that functions as the backdown preventing member, the backdown preventing link 74, the first connecting pin 40, the second connecting pin 42, the third connecting pin 76, and the cutout 46. Furthermore, the backdown preventing device 78 does not make the intermediate lever 26 relatively pivot in the outputting direction when the dash panel 12 is displaced backwards, but makes the third connecting pin 76 of the backdown preventing link 74 be in contact with the one end portion 72a of the long hole 72 to detach the second connecting pin 42 of the coupling link 28 from the cutout 46 of the intermediate lever 26 to release the connection between the intermediate lever 26 and the operation pedal 18, and makes the operation pedal 18 pivot relatively in the direction of the tread operation. Therefore, regardless of whether or not the pivoting in the outputting direction of the intermediate lever 26 is possible or not due to the operation rod 32 not being able to be pushed in, the backdown of the tread section 22 of the operation pedal 18 is prevented as appropriate, and the backdown preventing effect is obtained stably thereafter.
Moreover, the backdown preventing lever 64 includes the guide section 70; in a case in which the operation pedal 18 is trod from the initial position, the second connecting pin 42 is guided to be not detached from the cutout 46 of the intermediate lever 26 and is made so that the intermediate lever 26 is pivoted in the output direction in connection with the operation pedal 18, whereas at the time of backward displacement of the dash panel 12, the guide section 70 allows for the second connecting pin 42 to escape from the guide region and detach from the cutout 46. Therefore, while at the time of tread operation of the operation pedal 18, the intermediate lever 26 is pivoted securely in the outputting direction in connection with the operation pedal 18 without the second connecting pin 42 detaching from the cutout 46 and thereby the operation rod 32 is pressed, when the dash panel 12 is displaced backwards at the time of collision or the like, the second connecting pin 42 escapes from the guide region by the guide section 70 to allow the second connecting pin 42 to detach from the cutout 46. And by the third connecting pin 76 of the backdown preventing link 74 being in contact with the one end portion 72a of the long hole 72, the operation pedal 18 is pivoted relatively in the direction of the tread operation. Therefore, the second connecting pin 42 is detached from the cutout 46, and the connection between the operation pedal 18 and the intermediate lever 26 by the coupling link 28 is securely released. That is to say, it is possible to detach the second connecting pin 42 from the cutout 46 and securely release the connection between the operation pedal 18 and the intermediate lever 26, while ensuring freedom in the settings of the connection position of the first connecting pin 40 and the second connecting pin 42, that is to say, the freedom in settings of load transfer behavior by the coupling link 28.
Moreover, the backdown preventing link 74 is disposed across the operation pedal 18 and the backdown preventing lever 64, and the third connecting pin 76 is connected to the backdown preventing lever 64 via the long hole 72; by the third connecting pin 76 be made into contact with the one end portion 72a of the long hole 72 at the time of backwards displacement of the dash panel 12, the operation pedal 18 is pivoted relatively in the direction of the tread operation. Accordingly, the freedom in design of the backdown preventing lever 64 related to the long hole 72 functioning as the stopper section is high, and the device can be configured in a compact manner.
Although the above describes in details of the Examples of the present application based on the drawings, these are merely one embodiment of the present application, and the present application may be implemented in aspects to which various changes and modifications are made, based on the knowledge of a person skilled in the art.
All examples and conditional language provided herein are intended for the pedagogical purposes of aiding the reader in understanding the invention and the concepts contributed by the inventor to further the art, and are not to be construed as limitations to such specifically recited examples and conditions, nor does the organization of such examples in the specification relate to a showing of the superiority and inferiority of the invention. Although one or more embodiments of the present invention have been described in detail, it should be understood that the various changes, substitutions, and alterations could be made hereto without departing from the spirit and scope of the invention.
In order to attain such object, a first aspect of the embodiment is characterized in that, in a backdown preventing device for vehicular pedal device that includes (a) a pedal bracket arranged to a dash panel; (b) an operation pedal arranged to the pedal bracket pivotally about an axis of a first support shaft, whose tread section provided in a lower-end portion of the operation pedal is trod towards a front side of a vehicle as a tread operation of the operation pedal; and (c) an intermediate lever arranged to the pedal bracket pivotally about an axis of a second support shaft parallel to the first support shaft, the intermediate lever being coupled to the operation pedal via a coupling link and adapted to operate a predetermined output member by being pivoted in an outputting direction mechanically in connection with the tread operation of the operation pedal, (d) the backdown preventing device is adapted to prevent the tread section of the operation pedal from moving backwards toward a driver's seat side when the dash panel is displaced backwards toward the driver's seat side, charactering in that: (e) either one of a first coupling section on a side of the operation pedal of the coupling link or a second coupling section on a side of the intermediate lever of the coupling link is a separable coupling section coupled in a separable manner via a cutout, and (f) a backdown preventing member supported to a vehicle body member provided in a side closer to the driver's seat from the dash panel is provided with a stopper section being adapted to be engaged with the operation pedal at a time of backward displacement of the dash panel to make the operation pedal pivot relatively in the direction of the tread operation, and making the separable coupling section separate to release a connection between the operation pedal and the intermediate lever by the coupling link.
The vehicle body member disposed closer to the driver's seat than the dash panel is for example an instrument panel reinforcement (reinforcement member of an instrument panel) or a cowl bracket; generally, the possibility of the displacement to the driver's seat side, that is to say, towards the back side of the vehicle, or a deformation amount thereto, when a large load is applied from the front of the vehicle such as a time of collision, is smaller compared to the dash panel, and the present application is a technology that prevents the backdown of the tread section of the operation pedal on the assumption that these backward displacement amounts are different.
A second aspect of the embodiment is characterized in that, in a backdown preventing device for vehicular pedal device that includes (a) a pedal bracket arranged to a dash panel; (b) an operation pedal arranged to the pedal bracket pivotally about an axis of a first support shaft, whose tread section provided in a lower-end portion of the operation pedal is trod towards a front side of a vehicle as a tread operation of the operation pedal; and (c) an intermediate lever arranged to the pedal bracket pivotally about an axis of a second support shaft parallel to the first support shaft, the intermediate lever being coupled to the operation pedal via a coupling link and adapted to operate a predetermined output member by being pivoted in an outputting direction mechanically in connection with the tread operation of the operation pedal, (d) the backdown preventing device is adapted to prevent the tread section of the operation pedal from moving backwards toward a driver's seat side when the dash panel is displaced backwards toward the driver's seat side, charactering in that: (e) a first coupling section on a side of the operation pedal of the coupling link is connected relatively pivotally about a link coupling point of the operation pedal, and a second coupling section on a side of the intermediate lever of the coupling link is fixed detachably to a cutout provided in the intermediate lever, and (f) a backdown preventing member supported to a vehicle body member provided in a side closer to the driver's seat from the dash panel is provided with a stopper section being adapted to be engaged with the operation pedal at a time of backward displacement of the dash panel to make the operation pedal pivot relatively in the direction of the tread operation, and making the second coupling section detach from the cutout to release a connection between the operation pedal and the intermediate lever by the coupling link.
A third aspect of the embodiment is characterized in that, in a backdown preventing device for vehicular pedal device of the second aspect of the embodiment, the backdown preventing member includes a guide section, adapted to guide so that the second coupling section does not detach from the cutout of the intermediate lever and to pivot the intermediate lever in an outputting direction in connection with the operation pedal in a case in which the operation pedal is trod from the initial position, whereas in a case of backwards displacement of the dash panel, allow for the second coupling section to escape from a guide region and detach from the cutout.
A fourth aspect of the embodiment is characterized in that, in the backdown preventing device for vehicular pedal device of the second aspect or third aspect of the embodiment, the backdown preventing member is provided with a contact section provided as the stopper section, the contact section being made into contact with the first coupling section coupled to the operation pedal at a time of backwards displacement of the dash panel.
A fifth aspect of the embodiment is characterized in that, the backdown preventing device for vehicular pedal device of the first aspect to third aspect of the embodiment, comprising (a) a backdown preventing link connected relatively pivotally across the operation pedal and the backdown preventing member, to which at least one of the coupling sections is connected via a long hole to allow for a tread operation of the operation pedal, wherein (b) the one of the coupling sections of the backdown preventing link contacts a one end portion of the long hole at a time of backwards displacement of the dash panel to make the operation pedal to pivot relatively in the direction of the tread operation, and among the one of the coupling sections and the one end portion of the long hole, the one on arranged a side closer to the backdown preventing member is the stopper section.
In the backdown preventing device for vehicular pedal device of the first aspect, either one of the pair of the first coupling section and the second coupling section of the coupling link that couples the operation pedal and the intermediate lever serves as a separable coupling section connected in a separable manner via a cutout; when the dash panel is displaced backwards for example at a time of collision, the operation pedal is made to engage with a stopper section to be relatively pivoted in the direction of the tread operation, and the separable coupling section is separated to release the connection of the operation pedal and the intermediate lever by the coupling link. As a result, the operation pedal is relatively pivoted in the direction of the tread operation regardless of a behavior of the intermediate lever, thus preventing the backdown of the tread section. That is to say, the intermediate lever is not relatively pivoted in the outputting direction when the dash panel is displaced backwards, but an engagement of the stopper section provided in the backdown preventing member with the operation pedal makes the separable coupling section of the coupling link separate and release the connection between the intermediate lever and the operation pedal, and makes the operation pedal relatively pivot in the direction of the tread operation. This thus prevents the backdown of the tread section of the operation pedal regardless of whether or not the pivoting in the outputting direction of the intermediate lever is possible due to the output member not being able to be pushed in, and the backdown preventing effect becomes stably achievable.
The second aspect corresponds substantially to one embodiment of the first aspect; the second coupling section fixed detachable to the cutout provided in the intermediate lever is equivalent to the separable coupling section, and the same effect is achievable as that of the first aspect of the embodiment. More specifically, the second coupling section on the intermediate lever side of the coupling link that couples the operation pedal with the intermediate lever is fixed in a detachable manner to the cutout provided in the intermediate lever, and when the dash panel is displaced backwards for example at the time of collision, the operation pedal is made to engage with the stopper section and to pivot relatively in the direction of the tread operation, and the second coupling section is detached from the cutout, by which the connection of the operation pedal with the intermediate lever by the coupling link is released. Accordingly, the backdown of the tread section is prevented, by the operation pedal being pivoted relatively in the direction of the tread operation regardless of the behavior of the intermediate lever. That is to say, the intermediate lever is not relatively pivoted in the outputting direction when the dash panel is displaced backwards, but an engagement of the stopper section provided in the backdown preventing member with the operation pedal makes the second coupling section of the coupling link be detached from the cutout of the intermediate lever to release the connection between the intermediate lever and the operation pedal, and causes the operation pedal to relatively pivot in the direction of the tread operation. This thus prevents the backdown of the tread section of the operation pedal regardless of whether or not the pivoting in the outputting direction of the intermediate lever is possible due to the output member not being able to be pushed in, and the backdown preventing effect becomes stably achievable.
In the third aspect, the backdown preventing member includes a guide section; in a case in which the operation pedal is trod from an initial position thereof, the guide section guides so that the second coupling section does not detach from the cutout of the intermediate lever and makes the intermediate lever pivot in the outputting direction in connection with the operation pedal, whereas at a time of backward displacement of the dash panel, the guide section allows for the second coupling section to escape from a guide region and detach from the cutout. Therefore, while the intermediate lever is securely pivoted in the outputting direction in connection with the operation pedal without the second coupling section detaching from the cutout to operate the output member at a time of tread operation of the operation pedal, when the dash panel is displaced backwards for example at a time of collision, the second coupling section escapes from the guide region by the guide section, which thus allows for the second coupling section to detach from the cutout and the operation pedal to become engaged with the stopper section and be pivoted relatively in the direction of the tread operation; this thus makes the second coupling section detached from the cutout and the connection between the operation pedal and the intermediate by the lever coupling link released securely. In other words, it is possible to detach the second coupling section from the cutout and securely release the connection between the operation pedal and the intermediate lever, while ensuring freedom in settings of a coupled position of the first coupling section and second coupling section, that is to say, freedom in settings of load transfer behavior by the coupling link.
In the fourth aspect, a contact section made to be in contact with the first coupling section coupled to the operation pedal at a time of backward displacement of the dash panel is provided in the backdown preventing member as the stopper section; this thus makes the number of members small, and thus allows for easy and low cost configuration.
In the fifth aspect, the backdown preventing link is arranged across the operation pedal and the backdown preventing member, and at least one of the coupling sections is connected via a long hole; by having one of the coupling sections of the backdown preventing link be in contact with one end portion of the long hole at the time of backward displacement of the dash panel, the operation pedal is relatively pivoted in the direction of the tread operation. Accordingly, the freedom in design of the backdown preventing member related to the stopper section is high, and the device can be configured in a compact manner.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2014-017766 | Jan 2014 | JP | national |
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/JP2014/063755 | May 2014 | US |
| Child | 15217732 | US |
