JPH0321587Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a door check device for automobiles.

[Prior art]

Conventionally, car doors are held open by door check devices, which prevent them from closing naturally on slopes due to the inclination of the slope and the door's own weight, and also prevent them from closing suddenly due to wind. This prevents injuries such as fingers being pinched.

The door check device that holds the door in the open state, for example, as shown in FIGS. 5 and 6, includes two lever plates 10, one end of which is pivotably attached to the vehicle body.
A holding member 105 fixed to the door side, which is slidably displaced on a lever 103 consisting of 1,101 in response to the opening/closing operation of the door, is positioned by raised portions 107, 107 provided on the lever 103. I'm trying to figure it out. A structure having such a structure is described, for example, in JP-A-52-126826.

[Problem that the invention attempts to solve]

In such a door check device, the holding member 1
05 is a slider 11 made of synthetic resin that is incorporated into the case 109 and acts on the upper surface of the lever 103.
1,111 and an elastic body 113, 113 that presses the slider 111 against the upper surface of the lever 103. When the slider 111 is on the upper surface of the lever 103 (solid line in FIG. The sliding resistance is relatively small.

Next, when closing the door from the fully open state, the raised portion 10
As the slider 111 climbs up the inclined surface 115 of FIG. The radiused portion 119 is larger than the inner radiused portion 121 of the lever plate 101 because the lever plate 101 is bent by a press. For this reason, the branching point 123 (the contact point between the rounded part 119 and the inclined surface 115) where the sliding resistance is maximized, that is, the pushing force that holds the door, is set far in front of the upper surface 117 of the raised part. It was inefficient.

Therefore, in order to secure a door holding force greater than this, for example, the inclined surface 11 of the raised portion 107 must be
This can be achieved by setting the inclination angle θ of 5 to a large value, but on the other hand, the wear of the slider 111 becomes significant, reducing its durability, and the closing operation of the door becomes difficult. Furthermore, it is conceivable to increase the size of the holding member 105, but this would result in higher costs;
Moreover, this is undesirable because it goes against the weight reduction goal.

Therefore, the object of this invention is to provide a door check device for an automobile that can perform the same door opening/closing operations as conventional ones without increasing the size of the holding member, and can also reliably hold the door in an open state.

[Means for solving problems]

In order to achieve the above object, this invention includes a lever that is formed of two lever plates connected together and has a raised portion on the upper surface of the lever, and a slider that is biased toward the upper surface of the lever. In the door check device, the raised portion is formed by bending the lever plate, and the raised portion is provided with a desired inclination angle from the upper surface of the lever. A control surface that rises up and continues to the upper surface of the raised portion is formed, and a radiused portion that continues from the control surface to the upper surface of the raised portion is set to be at least the same or smaller than the radiused portion on the inside of the lever plate.

[Effect]

In such a door check device for an automobile, when a load in the direction of closing the door is applied to the door in the open state, the sliding resistance increases sequentially due to the slider climbing up the control surface, and the sliding resistance increases at the rounded portion continuing from the control surface to the upper surface of the raised portion. Maximum. At this time, the sliding resistance, that is, the pushing force that holds the door, acts up to just before the top surface of the raised portion, and holds the door in the open state.

〔Example〕

Hereinafter, one embodiment of this invention will be described in detail with reference to the drawings of FIGS. 1 to 4.

In the figure, numeral 1 indicates an automobile door check device. The device 1 has a lever 3 and a holding member 5 that is slidably displaced on the lever 3. The holding member 5 is supported on the door 7 side, and the lever 3 is supported on the vehicle body 9 side.

The holding member 5 includes a case 13 that is fixed to the door panel of the door 7 and is provided with opposing openings 11, 11, a pair of elastic bodies 15, 15 housed in the case 13, and a sliding member made of synthetic resin. Child 17,
17, and the elastic body 15 is made of a material such as rubber, which changes the amount of deflection in response to a load (arrow) applied thereto.

On the other hand, the lever 3 is made up of two lever plates 1 in the form of a strip.
9 and 19, and one end passes through the opening 11 of the case 13 between the sliders 17 and is rotatably connected 21 to a bracket 9a provided on the vehicle body 9. There is. Further, at the other free end, a stopper 23 is provided which comes into contact with the end surface of the case 13 of the holding member 5 that is displaced on the lever 3 when the door is fully opened, and restricts the fully opened door position. The buffer member 25 of the stopper 23 is integrally assembled within a stopper plate 27 formed of an elastic material such as rubber and fixedly supported by the lever 3.

Further, raised portions 29, 29 are formed on the upper surface of the lever 3.

The raised portion 29 is formed by bending the lever plate 19 using a mold die 31 having a protrusion 31a at a bent portion and a punch 33, and is a control surface that rises from the lever upper surface 35 at a desired inclination angle θ. 37
have. The control surface 37 continues to the upper surface 39 of the raised portion via a radiused portion 41, and the radiused portion 41 is set smaller than the inner radiused portion 43 of the lever plate 19.

As a result, the branch point P (contact point between the rounded part 41 and the control surface 37) where the slider 17 switches from the control surface 37 to the raised part upper surface 39 is α compared to the conventional branch point, as shown in FIG. It is desirable that the radiused portion 41 be as small as possible because it will be closer to the upper surface 39 of the raised portion.

Note that a second control surface 45 following the raised portion upper surface 39
is for holding the door in a half-open state, and is formed along the longitudinal direction at the center of the upper surface 35 of the lever.

In the door check device 1 configured in this manner, the slider 17 of the holding member 5 acts on the control surface 37 or the second control surface 45, so that the door 7 is held in the fully open state or the half open state. .

Next, when a force in the closing direction is applied to the fully open door 7, the slider 17 slides and displaces while acting on the control surface 37. During this displacement, the amount of deflection of the elastic body 15 increases sequentially due to the slider 17 climbing the control surface 37, and the sliding resistance also increases in proportion to this. Thereby, the door 7 is maintained in the desired open state. In this case, the slider 17 is
As shown in FIG. 4, the amount of deflection of the H-portion elastic body 15 is increased compared to the conventional one, and the sliding resistance is increased. As a result, the force for holding the door 7 open increases, so that the door will not close even with the force that would conventionally cause it to close.

Further, when the door 7 is closed, the slider climbs the control surface 37 having the same inclination angle θ as in the conventional case, so that the door closing operation force is not impaired.

[Effect of idea]

As explained above, according to the door check device of this invention, the ability to hold the door when it is opened is improved without impairing the force with which the door can be closed. Therefore, it is possible to stand up to the wind force that would normally be closed, which is preferable from a safety standpoint.

[Brief explanation of the drawing]

Fig. 1 is a cutaway front view of the door check device of this invention, Fig. 2 is an explanatory diagram showing the processing state of the raised part, Fig. 3 is a general plan view of the entire device showing the installation state, and Fig. 4 is an explanation of the operation. 5 is a cutaway front view similar to FIG. 1 showing the conventional example, and FIG. 6 is an explanatory diagram of the raised portion of the conventional example. Explanation of main drawing symbols, 3...Lever, 5...
Holding member, 17... slider, 19... lever plate,
29...Protuberance, 35...Lever top surface, 37...
Control surface, 39...Top surface of raised portion, 41...Round portion, 43...Inner radius portion.

Claims (1)

[Scope of utility model registration request] The lever is formed by two joined lever plates and has a raised part on the upper surface of the lever, and has a slider that is biased toward the upper surface of the lever and slides on the lever in response to the opening/closing operation of the door. In the door check device equipped with a displaceable holding member, the raised portion is formed by bending a lever plate, and a control surface is formed on the raised portion at a desired inclination angle from the upper surface of the lever and continues to the upper surface of the raised portion, and the control surface is controlled. A door check device for an automobile, characterized in that a radiused portion extending from the surface to the upper surface of the raised portion is at least equal to or smaller than the radiused portion on the inside of the lever plate.