JP6398657B2 - Vehicle door check device - Google Patents

Description

  The present invention relates to a vehicle door check device when a vehicle door is opened.

Conventionally, for example, a vehicle door check device described in Patent Document 1 is known. In this type of door check device, a check bar having one end swingably arranged on the vehicle body side, a case fixed inside the vehicle door and inserted through the check bar, and provided at the other end of the check bar And a cushion member that is inserted into the check bar and fixed to the stopper member. The cushion member contacts the case when the vehicle door is opened to the fully open position, and absorbs the inertial load of the vehicle door transmitted through the case. Thus, the vehicle door is prevented from repelling and rebounding at the fully open position, and the load of inertial load is suppressed from being applied to other functional components inside the door.

  By the way, in the configuration as described above, the inertial load of the vehicle door is absorbed according to the elastic force of the cushion member, but the inertial load that cannot be absorbed is returned as a repulsive force in the direction opposite to the transmission direction. And the door rebounds. Accordingly, when it is desired to adjust the damping characteristic of the cushion member with an increase in the weight of the vehicle door or the like, it is necessary to set the thickness of the cushion member to be thicker in the direction in which the inertial load is received. Further, the inertial load received by the cushion member increases in proportion to the square of the operation speed of the vehicle door when there is no change in the weight of the vehicle door. That is, the inertial load differs greatly between when the vehicle door is opened relatively slowly and when it is opened quickly. Therefore, according to the said structure, it is necessary to set the thickness of a cushion member supposing the upper limit of the operating speed of a vehicle door.

JP 2005-307638 A

  However, providing a thicker cushion member is not preferable because it narrows the range in which the check bar swings and narrows the fully open angle of the vehicle door, which impairs convenience when getting on and off the vehicle. . Thus, it is conceivable to extend the length of the check bar by the thickness of the cushion member, but it cannot be easily extended because other functional parts and the like are also arranged inside the door. As another coping method, a method of increasing the area where the case and the cushion member abut is conceivable. However, this is also not preferable because the apparatus becomes large and interferes with other functional parts inside the door. Thus, it is difficult to improve the damping characteristics of the door check stopper disposed inside the door.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a vehicle door check device capable of generating a damping force corresponding to an inertial load of a vehicle door while suppressing an increase in size of a stopper member. is there.

In order to solve the above-described problems, in the invention according to claim 1, the vehicle is configured such that one end of the vehicle is swingably connected to the vehicle body and is pulled out from the vehicle door when the vehicle door is opened. A check arm that relatively moves in the door, a case that is fixed in the vehicle door, a case through which the check arm is inserted, and an opening operation of the vehicle door are provided to be restricted at a position where the vehicle door is fully opened. A stopper member having a first engagement portion fixed to the case and a second engagement portion fixed to the other end of the check arm and engaged with the first engagement portion at a fully open position of the vehicle door. And the first engagement portion and the second engagement portion constitute a closed space when engaged with each other and compress air in the closed space to cause an inertia associated with an opening operation of the vehicle door Concave that can attenuate the load And summarized in that with parts.

  According to the above configuration, when the vehicle door is fully opened, the closed space is formed by the uneven portions provided in the first engaging portion and the second engaging portion, and the air in the closed space is compressed, thereby the vehicle door. The inertia load accompanying the opening operation of is attenuated. In addition, since the air in the closed space is compressed as the engagement between the two engaging portions proceeds, the internal pressure in the closed space increases, so that a sufficient damping effect can be secured at the fully open position of the vehicle door. Therefore, the damping force according to the inertial load of the vehicle door can be generated while suppressing the increase in size of the stopper member.

  According to a second aspect of the present invention, the gist of the vehicle door check device according to the first aspect is that at least one of the first engaging portion and the second engaging portion is an elastic body.

According to the above configuration, the inertial load of the vehicle door can also be attenuated by elastically deforming at least one of the first engaging portion and the second engaging portion. That is, this elastic deformation is exhibited together with the repulsive force of the air compressed in the closed space of the engagement surface. Therefore, since a damping force due to the compression of air in the closed space and a damping force due to the elastic deformation of the elastic body can be obtained, a higher damping force can be obtained.
According to a third aspect of the present invention, in the vehicle door check device according to the first or second aspect, the closed space and the outside air are connected to at least one of the first engagement portion and the second engagement portion. The gist of the present invention is to provide an adjustment unit for adjusting the internal pressure of the closed space.

  According to the above configuration, the release of the air compressed in the closed space to the outside air can be adjusted, so that the internal pressure in the closed space can be controlled. Thereby, it is possible to prevent the vehicle door from rebounding due to the abnormal increase in the internal pressure of the closed space.

  According to a fourth aspect of the present invention, in the vehicle door check device according to the third aspect, the adjustment portion is provided between at least one of the first engagement portion or the second engagement portion and the check arm. The gist of the present invention is a communication groove that is provided and communicates between the closed space and the outside air.

  According to the above configuration, the air compressed in the closed space passes through the communication groove and is released to the outside air. Therefore, since the internal pressure of the closed space can be adjusted by adjusting the opening of the communication groove, the damping characteristic of the stopper member can be easily adjusted.

  As described above in detail, according to the present invention, it is possible to provide a vehicle door check device capable of generating a damping force corresponding to the inertial load of the vehicle door without increasing the size of the stopper member.

The side view which shows the vehicle with which the door check apparatus of this invention is applied. (A), (b) is a top view which shows operation | movement of the door check apparatus of the embodiment. The perspective view of the door check apparatus of the embodiment. (A), (b), (c) is sectional drawing of the door check apparatus of the embodiment. Sectional drawing which shows another embodiment of the door check apparatus of this invention. Sectional drawing which shows another embodiment of the door check apparatus of this invention.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments embodying the present invention will be described in detail with reference to FIGS.

As shown in FIG. 1, an opening 2 for getting on and off is formed in a side portion of a body 1 of the vehicle, and an edge 2 a in front of the opening 2 is arranged in parallel in the height direction of the vehicle. A door 4 is rotatably connected by a pair of door hinges 3. The door 4 opens and closes by rotating around the door hinge 3. In addition, one end of a check arm 11 that is formed in a substantially long shape constituting the door check device 10 is connected to the edge 2 a so as to be rotatable in accordance with the opening / closing direction of the door 4.
As shown in FIGS. 2 (a) and 2 (b), the edge 2a is formed with a substantially planar mounting surface 5 that is recessed toward the vehicle interior, and the mounting surface 5 is a bracket made of, for example, a metal plate. 12 is fastened. On the other hand, the door 4 includes a door outer panel 6 that extends so as to face the outside of the vehicle and a box-shaped door inner panel 7 that is disposed on the inside of the vehicle, and an edge of the door outer panel 6 and an opening of the door inner panel 7. A substantially sealed internal space is formed by joining the ends. Note that the door 4 is opened and closed by rotating about the shaft 3 a of each door hinge 3.
As shown in FIGS. 1 to 3, the door check device 10 includes a check arm 11, a stopper member 15, and a case 16. As shown in FIG. 2A, the check arm 11 has one end rotatably connected to the bracket 12. On the other hand, the other end of the check arm 11 enters the door 4 through the wall portion 8 of the door inner panel 7 facing the mounting surface 5 behind the mounting surface 5. When the door 4 is fully closed, the check arm 11 is housed in the door 4 through the case 16 and the first engaging portion 15a, and the door 4 is opened as shown in FIG. When the operation starts, the check arm 11 is gradually pulled out from the door 4. When the door 4 reaches the fully open position, the first engaging portion 15a and the second engaging portion 15b shown in FIG. 3 are engaged to restrict the opening operation of the door 4. Thus, the relative position of the check arm 11 with respect to the case 16 uniquely corresponds to the opening / closing position (opening degree) of the door 4. Specifically, the smaller the length L of the check arm 11 pulled out from the door 4, the smaller the opening degree. Conversely, the longer the length L, the larger the opening degree.
As shown in FIGS. 2A and 2B, the case 16 is fastened to the wall portion 8 of the door 4. The case 16 has an insertion hole 17 that is inserted into the check arm 11 and is inserted from the other end side of the check arm 11. In this case 16, a pair of sliding members (not shown) are attached in a pair so as to abut on the upper and lower surfaces of the check arm 11 with a predetermined load. This sliding member (not shown) slightly restricts the case 16 from moving in the longitudinal direction of the check arm 11 and slightly restricts the opening / closing position of the door 4.
As shown in FIG. 3, the stopper member 15 includes a first engaging portion 15a and a second engaging portion 15b. The first engagement portion 15a is a cylindrical elastic body formed of a resin such as rubber, for example, and has a contact surface 21a and a first engagement surface 22a which are flat surfaces. The contact surface 21a contacts the case 16, and the first engagement surface 22a is fixed to the case 16 so as to face the second engagement portion 15b. A concave portion 20a having an inner peripheral surface 23a and a bottom surface 23b is formed in the center of the first engagement surface 22a. As shown in FIG. 4, a communication groove 24a communicating with the contact surface 21a is provided in the center of the recess 20a (bottom surface 23b). The communication groove 24a is provided in such a shape that the check arm 11 is inserted in a manner having a predetermined gap. On the other hand, as shown in FIG. 3, the second engaging portion 15b is a cylindrical elastic body formed of a resin such as rubber, for example, like the first engaging portion 15a. It is formed in a convex shape so as to engage with the concave portion 20a. Specifically, the second engagement portion 15 b has a second engagement surface 21 b and a fixed surface 22 b that are flat surfaces, and an outer peripheral surface 24. The second engagement surface 21 b is disposed to face the recess 20 a of the first engagement surface 22 a, and the fixing surface 22 b is fixed to the other end 11 a of the check arm 11. The second engagement surface 21b and the outer peripheral surface 24 are formed so as to coincide with the bottom surface 23b and the inner peripheral surface 23a of the recess 20a, and the second engagement portion 15b engages with the first engagement portion 15a, thereby The door is restricted in the fully open position. For this reason, as shown to Fig.4 (a), (b), while the 2nd engagement surface 21b engages with the recessed part 20a, the closed space S is formed. In the present embodiment, the diameter of the second engagement portion 15b is configured to be slightly smaller than the diameter of the recess 20a. By the way, if the 1st engaging part 15a and the 2nd engaging part 15b are the aspects which can form the closed space S, they will not be limited to a column shape, For example, an ellipse or a square may be sufficient.

Then, operation | movement of a vehicle door check apparatus is demonstrated based on Fig.4 (a), (b), (c). As shown in FIG. 4A, the first engagement portion 15a and the second engagement portion 15b are engaged by the recess 20a and the second engagement portion 15b before the vehicle door reaches the fully open position. The When the engagement is started, a closed space S is formed by the inner peripheral surface 23a and the bottom surface 23b of the recess 20a and the second engagement surface 21b. With this closed space S, outside air is confined.
As shown in FIG. 4B, the closed space S gradually increases in volume because the engagement of the recess 20a and the second engagement portion 15b (projection) is advanced with the opening operation of the vehicle door. Decrease. When the volume decreases, the air in the closed space S is compressed and the internal pressure increases, and a repulsive force is generated to return the volume of the closed space S to its original state. The repulsive force of the air attenuates the inertial load of the vehicle door against the opening operation of the vehicle door. The internal pressure of the closed space S is adjusted by the communication groove 24a, which is an adjustment unit, and the air in the closed space S passes through the communication groove 24a and is discharged to the outside until the internal pressure becomes a predetermined internal pressure or higher. . For this reason, the inertial load of a vehicle door can be attenuate | damped moderately and it can suppress that a vehicle door bounces back. Specifically, the communication groove 24a is a narrow passage that connects the closed space S and the outside air, and when the air in the closed space S is pushed out and passes through the communication groove 24a, the flow rate of the air has a predetermined speed. If it exceeds, a certain resistance will be given to the flow velocity of air, and it will discharge to the outside air. Therefore, when the inertia load of the vehicle door is small (when the opening operation is slow), the internal pressure in the closed space S is not increased so much and is released to the outside air. On the other hand, when the inertia load of the vehicle door is large (when the opening operation is fast), the internal pressure in the closed space S increases, and the inertia load is moderately attenuated. As described above, the communication groove 24a prevents the internal pressure in the closed space S from rising abnormally. The internal pressure in the closed space S can be adjusted according to the mode of the communication groove 24a. That is, when it is desired to increase the damping force by increasing the internal pressure in the closed space S, the gap between the communication groove 24a and the check arm 11 may be set small. Should be set larger.
As shown in FIG. 4C, when the engagement between the first engagement portion 15a and the second engagement portion 15b is completed, the release of air in the closed space S is completed. At this time, if the inertial load of the vehicle door is not sufficiently attenuated, the inertial load continues to be attenuated by the elastic deformation of the engaged first engaging portion 15a and second engaging portion 15b, and the door completely Regulate opening operation.
As described above, the vehicle door check device of the present invention attenuates the inertial load of the vehicle door through a two-stage process. That is, in the first stage, the inertial load of the vehicle door is attenuated by the repulsive force of the air in the closed space S formed on the engagement surface between the first engagement portion 15a and the second engagement portion 15b. In the stage, the inertial load of the vehicle door is further damped by the elastic deformation of the first engaging portion 15a and the second engaging portion 15b that have completed the engagement.

  Therefore, according to the present invention, the following effects can be obtained.

  (1) The closed space S is constituted by the concave portion 20a and the second engaging portion 15b (convex portion) provided in the first engaging portion 15a, and the air in the closed space S is compressed to open the vehicle door. The inertia load accompanying operation is attenuated. In addition, since the air in the closed space S is compressed as the engagement between the two engaging portions proceeds, the internal pressure in the closed space increases, so that a sufficient damping effect can be secured at the fully open position of the vehicle door. Therefore, the damping force according to the inertial load of the vehicle door can be generated while suppressing the increase in size of the stopper member.

  (2) The inertia load of the vehicle door can also be attenuated by elastically deforming at least one of the first engaging portion 15a and the second engaging portion 15b. That is, this elastic deformation is exhibited together with the repulsive force of the air compressed in the closed space S of the engagement surface. Therefore, since a damping force due to the compression of the air in the closed space S and a damping force due to the elastic deformation of the elastic body can be obtained, a higher damping force can be obtained.

  (3) Since the release of the air compressed in the closed space S to the outside air can be adjusted, the internal pressure of the closed space S can be controlled. Thereby, it is possible to prevent the vehicle door from rebounding due to the abnormal increase in the internal pressure of the closed space S.

  (4) The air compressed in the closed space S is discharged to the outside air through the communication groove 24a. Therefore, since the internal pressure of the closed space S can be adjusted by adjusting the opening of the communication groove 24a, the damping characteristic of the stopper member can be easily adjusted.

  In addition, you may change embodiment of this invention as follows.

  -In the said embodiment, although the 1st engaging part 15a engages as a recessed part and the convex part which the 2nd engaging part 15b engages, it is not limited to this, For example, to Fig.5 (a), (b) As shown, a plurality of concave portions and convex portions are provided on the bottom surface 23b side of the first engaging portion 15a, and a plurality of convex portions and concave portions are correspondingly provided on the second engaging surface 21b of the second engaging portion 15b. It may be provided. That is, the concave and convex portions of the first engaging portion 15a and the second engaging portion 15b may be in any form as long as they are engaged when the vehicle door is fully opened.

  -In the above-mentioned embodiment, although the 1st engaging part 15a and the 2nd engaging part 15b are comprised from an elastic body, if it can attenuate the inertia load of the assumed vehicle door, it will not be limited to these, for example, the 1st engagement Only one of the part 15a and the second engaging part 15b may be made of an elastic body. Moreover, you may comprise with the material from which an elastic coefficient differs. Further, both engaging portions may be made of a highly rigid material. A desired attenuation characteristic can be obtained by a combination of these materials.

  -In the said embodiment, although the process which attenuates a vehicle door is implemented in two steps, it does not necessarily need to be implemented in two steps. For example, when the inertial load of the vehicle door is sufficiently small, the attenuation of the inertial load can be sufficiently restricted in the first stage. Further, by forming the first engaging portion 15a and the second engaging portion 15b with a material having a low elastic coefficient, it is possible to simultaneously exhibit the first-stage attenuation and the second-stage attenuation. Furthermore, the second-stage attenuation and the first-stage attenuation can be interchanged, and the attenuation characteristics can be easily adjusted.

  In the above embodiment, the stopper plate 40 made of a metal plate may be fixed to the other end 11a of the check arm 11 and may be provided side by side with the second engagement portion 15b (see FIG. 5C). According to such a configuration, the contact surface 21a, the first engagement portion 22a, and the fixed surface 22b are sandwiched between the case 16 and the stopper plate 40 having high rigidity when the vehicle door is fully opened. The area of the stopper member 15 that receives the inertial load of the vehicle door is increased. Therefore, the inertial load of the vehicle door is smoothly transmitted by the first engagement portion 15a and the second engagement portion 15b, so that the damping characteristic of the vehicle door can be further enhanced.

  -In the said embodiment, although the adjustment part is formed of the communication groove 24a provided between the check arm 11 and the 1st engaging part, it is not limited to this, For example, a 1st engagement A through hole may be provided to connect the inner peripheral surface 23a of the part and the outside air (see FIG. 6A). Further, a fastening portion 30 such as a bolt or a screw may be fastened to the opening of the through hole so that opening / closing of the opening can be adjusted as appropriate (see FIG. 6B). Moreover, the diameter of the recessed part 20a of the 1st engaging part 15a is formed larger than the diameter of the 2nd engaging part 15b, and the clearance gap between the inner peripheral surface 23a of the recessed part 20a and the outer peripheral surface 24 of the 2nd engaging part 15b is formed. You may make it function as an adjustment part.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle body, 4 ... Door, 11 ... Check arm, 15 ... Stopper member, 15a ... 1st engaging part, 15b ... 2nd engaging part (convex part), 16 ... Case, 17 ... Insertion hole, 20 ... Engagement Joint part, 20a ... concave part, 21a ... contact surface, 21b ... second engagement surface, 22a ... first engagement surface, 22b ... fixed surface, 23a ... inner peripheral surface, 23b ... bottom surface, 24 ... outer peripheral surface, 24a ... Communication groove, 30 ... Fastening part, 40 ... Stopper plate

Claims (4)

A check arm that is pivotally connected to the vehicle body at one end and relatively moves in the vehicle door so that the vehicle door is pulled out when the vehicle door is opened.
A case in which the check arm is inserted while being fixed in the vehicle door;
A first engagement portion fixed to the case and fixed to the other end of the check arm, provided to restrict the opening operation of the vehicle door at a position where the vehicle door is fully opened; And a stopper member having a second engagement portion that engages with the first engagement portion.
The first engaging portion and the second engaging portion constitute a closed space when engaged with each other, and can compress the air in the closed space to attenuate an inertia load accompanying the opening operation of the vehicle door. A vehicle door check device having an uneven portion.   The vehicle door check device according to claim 1, wherein at least one of the first engaging portion and the second engaging portion is an elastic body. 3. The vehicle according to claim 1, wherein at least one of the first engagement portion and the second engagement portion includes an adjustment portion that connects the closed space and outside air to adjust an internal pressure of the closed space. Door check device. The said adjustment part is a communicating groove which is provided between at least one of the said 1st engaging part or the said 2nd engaging part, and the said check arm, and connects the said closed space and external air. Vehicle door check device.

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