JPH03286084A - Door checker - Google Patents

Abstract

PURPOSE:To permit the stable use by installing a tank case which is installed on a door or one of frame sides and whose inside is filled with liquid, a plate which reciprocatingly moves in a prescribed passage according to the opening/ closing of the door, and a turning-up/down part for varying the sectional surface in the case. CONSTITUTION:A door checker 1 is provided at the opposed part between the door 2 of an automobile and a pillar corresponding to the door frame of a car body 4, and the inside of the semicylindrical space which extends vertically inside a tank case 6 is charged with oil. Further, a plate 20 is fitted into the groove 14a extending in the axis line O direction, and shifted in a case 6 along a relative passage of a shaft 14 and a case 6, around the axis line O. An inner tube 22 is fitted into the inner peripheral part of the case 6, and turning-up/down part for partially varying the sectional surface in the case 6 along the shift passage of the plate 20 is formed. Accordingly, the desired check can be performed even after the repetitive use for a long period.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a door checker that is attached to, for example, an automobile door, and applies a check load at a predetermined timing to provide a sense of moderation when opening and closing the door. .

[Prior Art] This type of door checker, for example, is commonly used for automobile doors, and is provided at a portion facing the vehicle body and the door to which the door hinge is attached.

The main elements are an arm fixed to one side of these opposing parts and an elastic body fixed to the other side of these opposing parts. The former arm is sandwiched by the latter elastic body, and the position where the arm is sandwiched by the elastic body shifts depending on the opening/closing angle of the door, and the frictional resistance generated at that time generates a checking force. The arm has a thick part and a thin part, and when the thick part is pinched by the elastic body, the checking force increases,
The checking force decreases when a thin part is caught.

[Problems to be solved by the invention] However, with such conventional door checkers,
Friction between the arm and the elastic body causes their contact surfaces to wear. Therefore, there were contradictory design issues in that an attempt to reduce wear would reduce the checking force, and an attempt to increase the check force would increase wear.

In addition, a door checker having an arm that is displaced while being sandwiched between elastic bodies tends to vibrate due to the frictional force generated between the elastic body and the arm, and the vibrations have the problem of generating abnormal noise.

The present invention aims to solve these problems and to provide a door checker that can generate a desired checking force even after repeated use over a long period of time and does not generate any abnormal noise.

[Means for Solving the Problems] The door checker of the present invention is installed between a door and a door frame, and operates by opening and closing the door to generate a checking force. a tank case that is attached to the side of the tank and has a liquid sealed inside; a tank case that is located inside the tank case and is connected to the other side of the door or the door frame;
a plate that reciprocates along a predetermined movement path within the tank case in response to the opening and closing of the door; The invention is characterized in that it includes a raised portion that changes the shape.

[Function] In the door checker of the present invention, the plate moves along a predetermined movement path inside the tank case containing liquid in response to opening and closing of the door, and the size of the cross section inside the tank case along the movement path is changed. Liquid flow resistance occurs depending on the temperature. The flow resistance is then applied to the door as a check load.

As a result, even when used repeatedly for a long period of time,
A stable liquid flow resistance produces the desired checking force. Furthermore, by generating a checking force without depending on the frictional resistance of the mechanical contact portion, generation of abnormal noise due to vibration caused by the frictional force is also eliminated.

[Example] Embodiments of the present invention will be described below based on the drawings.

1 to 9 are diagrams for explaining a first embodiment of the present invention.

The door checker of this example is for the door of an automobile, and as indicated by the reference numeral 1 in FIG.
Similarly to the door hinges 3, 3, the door 2 and the vehicle body 4 (second
It is designed to be installed between the opposite part of the door frame (see figure) and the pillar, which corresponds to the door frame. In Fig. 2, the axis O is the center axis of the door checker l, which coincides with the rotational axis of the door hinges 3, 3, and the door 2 is closed as shown by the solid line in the figure, and is also shown by the dashed dotted line in the figure. It will be opened like this.

In the figure, 5 is a fender.

A tank case 6 is attached to the door 2, and has a structure in which a case 6a and a cover 6b are combined. The joint portion is sealed by a backing, and oil is sealed in a semi-cylindrical space extending vertically inside the tank case 6.

Oil is injected from check valve V. The check valve V is constructed as shown in FIG. 8, and a seal vibrator lO having a conical tip is moved from the inside of the tank case 6 to the valve seat 11 by the force of a spring 9 compressed by a stopper 8. It's meant to be forced. Therefore, when oil is injected, the seal vibrator 1o moves away from the valve seat 11 against the spring force of the spring 9 due to the injection pressure, and after oil injection is completed, the seal vibrator 10 is pressed against the valve seat 11 and the oil is removed. Prevent leaks. In FIG. 8, reference numeral 12 denotes an inner cap, which seals the oil filler port by tightening an outer cap 13 that is screwed onto the outer periphery of the oil filler port.

A shaft 14 that rotates around an axis O is attached to the inside of the tank case 6.
The upper end of the lever 4 extends outward while keeping the tank case 6 sealed, and is connected to the base end of the lever 15. The tip of the lever 15 is connected to one end of a link 17 via a rivet 16, and the other end of the link 17 is connected to a bracket 19 by a pin 18. Further, the bracket 19 is fixed to a pillar of the vehicle body 4. Thereby, the shaft 14 is connected to the vehicle body 4 side.

The shaft 14 has a groove 14a extending in the direction of its axis O.
is formed, and a rectangular plate 20 is fitted into the groove 14a. An annular packing 21 for sealing is attached to the peripheral edge of the plate 20.

The plate 20 moves within the tank case 6 along an arcuate movement path centered on the axis O due to the relative rotation of the tank case 6 and the shaft 14 about the axis O. As shown in FIG. 6(a), the tip edge 20a of the plate 20 is inclined in a direction approaching the axis O from the negative side 20b to the other side 20c. The plate 20 is also provided with an oil escape hole 20d that becomes larger in diameter from the negative side surface 20b toward the other side surface 20c.

An inner tube 22 is fitted to the inner circumference of the tank case 6. This inner tube 22 constitutes a raised part that partially changes the size of the cross section inside the tank case 6 along the moving path of the plate 20, and is connected to the first and second protrusions 22a and 22b. , groove portion 22c are formed. Projections 22a i3 and 2
2b extends along the axis 1ilO direction, and the latter is wider than the former. The grooves 22c are formed at three positions adjacent to the projections 22a and 22b. Fourth, the effect will be explained.

As the door 2 is opened and closed, the tank case 6 rotates around the axis O together with the door 2. On the other hand, the shaft 14 inside the tank case 6 does not rotate because it is connected to the vehicle body 4. Therefore, as the door 2 is opened and closed, the tank case 6 and the plate 20 attached to the shaft 14 relatively rotate left and right about the axis O. When the axis O deviates from the axis of the hinge 3.degree. 3, the rivet 16 moves by the amount of the deviation.

When the door 2 is closed, the tank case 6 and the plate 20 are in the positional relationship shown in FIG. 1, and the plate 20 divides the inside of the tank case 6 into first and second oil chambers R1 and R3. .

Now, when the door 2 is opened, the tank case 6 rotates clockwise in FIG. 1, and the tank case 6 moves from the position shown in FIG. 5(a) to the position shown in FIG. Move to position.

During the movement period, when the groove 22c of the inner tube 22 faces the tip edge 20a of the plate 20, the oil in the second oil chamber R2 is transferred to the groove 22 of the inner tube.
c and flows into the first oil chamber R+ through the oil escape hole 20d of the plate 20. At this time, the oil passing through the oil escape hole 20d flows with low resistance from the large diameter side to the small diameter side of the oil escape hole 20d. Therefore, the door 2 opens with low resistance.

In addition, the protrusions 22a and 22 of the inner tube 22
When b faces the leading edge 20a of the plate 20, the flow of oil through the groove 22c is prevented.

Therefore, the oil flow resistance increases accordingly, and a checking force is applied to the door 2. At that time, the tip edge 2 of the plate 20
Due to the slope of Oa, the flow of oil through the groove 22c is gradually impeded. Therefore, the checking force when the door 2 is opened is relatively small, and is generated only for a period corresponding to the width of the projections 22a and 22b. In addition, the second protrusion 22
Since the width b is large, the checking force immediately before fully opening the door 2 becomes large.

On the other hand, when the door 2 is closed, oil flows from the first oil chamber R1 to the second oil chamber R2, and a checking force is generated in the same way as when the door 2 is opened. However, the oil passing through the oil escape hole 20d of the plate 20 is
It flows with high resistance from the small diameter side of 0d toward the large diameter side. Furthermore, the protrusions 22a and 22b of the inner tube 22
When facing the leading edge 20a of the plate 20, the corner between the leading edge 20a and one side 20b of the plate 20 rapidly blocks the flow of oil through the groove 22c.

Therefore, the closing movement resistance of the door 2 is greater than the opening movement resistance, and the checking force during the closing movement is also greater than during the opening movement. In particular, the checking force when starting to close the fully open door 2 is large, and this force sufficiently maintains the fully open state of the door 2 to prevent the door 2 from being closed inadvertently.

FIG. 10 is a diagram for explaining another embodiment of the present invention. In this embodiment, a straight oil escape hole 20e is formed in the plate 20, and an oil escape hole 20e is formed in the side surface 20b.
It has a structure in which a valve body 23 having a small hole 23a is attached to the opening of Oe.

When the door 2 is closed, that is, when oil flows from the first oil chamber R3 to the second oil chamber R2, the valve body 23 closes the oil escape hole 20e as shown by the solid line in the figure. , through the small hole 23a of the valve body 23, oil flows in the oil escape hole 20e with high resistance. On the other hand, when the door 2 is opened, that is, the second oil chamber R
When oil flows from inside valve body 2 into first oil chamber R1,
3 opens the oil escape hole 20e as shown by the two-dot chain line in the figure, and the oil flows through the oil escape hole 20e with low resistance without being prevented by the valve body 23. As a result, the closing resistance of the door 2 is made greater than the opening resistance, similar to the first embodiment described above.

Note that when the door 2 is small, the required checking force is also small, so it is not necessary to attach the seal 21 to the plate 20.

Further, the movement path of the plate 20 within the tank case 6 is not limited to an arcuate shape, but may be arbitrary, for example, a straight line.In short, the plate 20 can reciprocate in accordance with the opening and closing of the door 2. Any predetermined movement route may be used.

Further, by setting various sizes of the cross sections inside the tank case 6 along the movement route, it is possible to generate a check force of an arbitrary size with arbitrary tanning.

Furthermore, it goes without saying that the door checker of the present invention is not limited to use on automobile doors.

[Effects of the Invention] As explained above, the door checker of the present invention moves a plate along a predetermined movement path in a tank case containing liquid in response to opening and closing of the door, and moves the plate along the movement path. The structure creates liquid flow resistance according to the cross-sectional size inside the tank case, and applies that flow resistance to the door as a check load, so even after repeated use over a long period of time, the liquid remains stable. The desired checking force can be generated by the flow resistance of . Furthermore, since the checking force is generated without relying on the frictional resistance of mechanical contact parts, there is no generation of abnormal noise due to vibrations caused by the frictional force.

[Brief explanation of the drawing]

1 to 9 are diagrams for explaining one embodiment of the present invention. FIG. 1 is a plan view showing the inside of the tank case with the cover removed, and FIG. 2 is a door. FIG. 3 is a plan view showing the entire door checker in the direction of arrow m in FIG. 2, FIG. 4 is a vertical sectional view of the tank case taken along line IV-IV in FIG. Figures (a) and (b) are plan views showing different states of the inside of the tank case with the cover removed, and Figure 6 (a) shows the opposing portion of the plate and the first protrusion. 6(b) is an enlarged sectional view showing the facing portion of the plate and the second protrusion; FIG. 7 is a view taken in the direction of the ■ arrow in FIG. 2 showing the connecting portion of the link; The figure is a longitudinal sectional view of a check valve provided in a tank case, and FIG. 9 is a front view of the door showing the mounting position of the door checker on the door of an automobile. FIG. 1O is an enlarged sectional view showing a portion where a plate and a first protrusion face each other in another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Door checker, 2...Door, 3.3...Door hinge, 4...Vehicle body, 6...Tank case, 6a...Case, 6b...Cover 14...Shaft , 20... Plate, 22... Inner tube 22a... First protrusion, 22b... Second protrusion, 22c... Groove, ■... Check valve. (Grain part) Fig. 3 Fig. Fig. 7 Fig. 8 Fig. 9g! I 2c Figure 10

Claims (1)

[Scope of Claims] 1) A door checker that is installed between a door and a door frame and operates to generate a checking force when the door is opened or closed, the door checker being installed on either side of the door or the door frame,
and a tank case in which a liquid is sealed; and the tank case is located inside the tank case and is connected to either the door or the door frame on the other side, and moves the inside of the tank case to a predetermined position in response to opening and closing of the door. a plate that reciprocates along a movement path; and a protrusion that is formed on an inner wall of the tank case and partially changes the size of a cross section inside the tank case along the movement path. door checker.