JPH038771Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a door checker for the back door of a van-type vehicle.

(Prior Art) Conventionally, the door checker for the back door of a van-type vehicle is a modified version of a residential door checker. As shown in Fig. 1, when the back door S needs to be opened more than 90 degrees, this door checker pulls out the pin 1 attached to the door frame W side at the rear end of the door B to allow the door check 3 to rotate freely.
was opened more than 90°. When using the door check 3 as a stopper when the door is opened 90 degrees or when the back door S is fully closed, set the door check 3 on the bracket 2 attached to the door frame W and press the pin 1.
It was necessary to insert the . Therefore, this modified door checker has the following drawbacks.

(b) Open the door more than 90 degrees, or open the door more than 90 degrees.
Every time you open or fully close the vehicle by 90 degrees, remove and install pin 1 on the cargo floor of the vehicle, and check door check 3.
Work must be carried out to free or fix the

(b) When the door is opened more than 90 degrees, since the door check 3 is rotatable, it may protrude from the door frame W and may come into contact with other objects and break it.

(c) In the conventional door check 3, the steel ball is sandwiched between two plates, and the friction force between the steel ball and the plate provides moderation, so the holding force to keep the back door S in the 90° open position is It was unstable, and there was a strong tendency for the holding force to deteriorate due to wear of the steel balls.

(Purpose of the invention) This invention opens the back door more than 90 degrees, moves the back door opened more than 90 degrees to the 90 degree open position,
The object of the present invention is to provide a door checker that is extremely easy to fully close, has no risk of damaging other objects when opening or closing the back door, and furthermore, maintains the back door at an open position of 90° even after many years of use. do.

(Structure of the invention) In order to achieve the above object, the door checker of this invention consists of an arm assembly that is horizontally rotatably pivoted to the back door frame of a van type vehicle, and a rail assembly that is provided on the back door. an arm pivoted at one end so as to be rotatable in the horizontal direction; a roller support member attached to the other end of the arm so as to be movable in the vertical direction; and a roller attached to the upper end of the roller support member so as to be rotatable in a horizontal plane. , an arm stopper that restricts the rotation angle of the arm to a predetermined angle of 90° or more, and a spring that rotates the arm and biases the other end toward the back door, and the rail assembly consists of a strip part and a channel part. a guide rail having a roller rolling portion, which guides the roller from the fully closed position of the back door to the 90° open position, and has a contact surface at the end of the channel portion that comes into contact with the roller at the 90° open position of the back door; Working together with the front door to create a backdoor
An elastic member is attached to the channel portion of the guide rail to hold the back door at the 90° open position, and when the back door is closed from an opening of 90° or more, the elastic member is attached to the channel portion of the guide rail to hold the back door from a desired opening of 90° or more to a desired opening of 90° or less. The guide plate has a roller rolling surface that is inclined with respect to the channel portion of the guide rail and a roller rolling surface that is parallel to the channel portion of the guide rail.

(Description of Examples) This invention will be explained below based on FIGS. 2 to 5 showing examples. As shown in FIG. 2, arm assemblies 5, 5, which will be described in detail later, are attached to both sides of the door frame W at the rear end of the van-type body B, and the back door S is attached to the door frame W as shown in FIG. It is supported by a door mounting bracket 27 attached to the rear surface of W via a door support plate 26 and a door pin 28 so as to be rotatable in the horizontal direction. Rail assemblies 4, 4, which will be described in detail later, are attached to this back door S.

As shown in FIG. 2, the arm assembly 5 includes a bracket 12 consisting of a mounting board 12a attached to the door frame W with bolts 29 and two parallel support plates 12b attached to this, and both support plates 12b, 1.
A rotating tube 9a is rotatably inserted between the shaft 10, a washer 30, and a bolt pin 31 between the rotating tubes 2b, and a horizontal arm portion 9 is fixed at one end to the rotating tube 9a.
b, and both support plates 12b, 1 that regulate the rotation angle of the arm 9 to a predetermined value (this angle corresponds to the opening angle of 90° or more of the back door S).
A rod-shaped arm stopper 13 provided between 2b, a coil spring 11 that urges the arm 9 to rotate counterclockwise in FIG. 2, a vertical roller support member 22 attached to the other end of the arm 9, and It consists of a roller 14 attached to the upper end.

The roller support member 22 includes a vertical cylinder 16 fixed to the other end of the arm 9, a roller shaft 15 having a collar 17 that slides inside the cylinder 16, and a cap 19 and a collar 1 at the lower end of the cylinder.
A compression coil spring 18 inserted between 7 and
An E-ring 20 that prevents the roller shaft 15 from rising excessively, and a string 2 that pulls the roller shaft 15 downward.
It consists of 1. The roller 14 is attached to a stepped portion 15a at the upper end of the roller shaft 15.

On the other hand, the rail assembly 4 is attached to the inner surface of the back door S by three bolts 32, and has a band-shaped portion 6a.
A guide rail 6 has a roller rolling section consisting of a channel section 6b connected thereto, a contact surface 6c provided at the end of the channel section 6b, and a guide rail 6 that is parallel to the roller rolling surface 8a that is inclined with respect to the channel section 6b. The channel portion 6 has a roller rolling surface 8b that
a plate spring having a guide plate 8 welded to b, and a bulging portion 7a that is attached to the guide plate 8 with screws 33 and projects from a notch 6d provided in the channel portion 6b of the guide rail 6 into the channel portion 6b. It consists of 7.

In the above configuration, the roller 14 is moved between the arm 9 and the roller support member 22 by the action of the coil spring 11.
The belt-shaped portion 6a of the guide rail 6, the channel portion 6b or the roller rolling surface 8 of the guide plate 8
It is pressed against a and 8b. That is, when the backdoor S is in the fully closed position (the position shown in FIG. 5A), the roller 14 is pressed against the band-shaped portion 6a of the guide rail 6. From this state, when the back door S is opened through opening degrees B and C to position D, which is an opening degree of 90°, the roller 14 enters the channel portion 6b from the strip portion 6a and is rotatably engaged with the channel portion 6b. When the back door S is at the 90° open position, it climbs over the bulge 7a of the leaf spring 7 and connects the bulge 7a and the channel portion 6.
It fits into the locking part 6e between the end of b and the contact surface 6c. Therefore, the back door S is completely locked at the 90° open position.

To open the back door S by more than 90 degrees, pull the string 21 of the roller support member 22 downwards and open the roller shaft 1.
5 against the elasticity of the compression coil spring 18, and the roller 14 is moved to the locking portion 6e of the guide rail 6.
Let it escape downwards. Backdoor S in this state
The connection with the arm assembly 5 breaks and rotates, but when the back door S is opened more than 90 degrees, the string 21
When the tension on the roller 14 is stopped, the roller 14 rises due to the elasticity of the compression coil spring 18 and comes into pressure contact with the guide plate 8b. Therefore, when the back door S is further opened, the roller 14 rolls on the rolling surface of the guide plate 8 toward the inclined rolling surface 8a.
At the opening degree E, the arm 9 comes into contact with the arm stopper 13 and cannot rotate any further. However, the back door S opens away from the roller 14 from a position F to a fully open position G (for example, 270 degrees open).

To fully close the back door S from the fully open position G, move the back door S through the F position and back to the E position.
contact a. When the backdoor S is returned to the H position, the roller 14 falls from the parallel rolling surface 8b of the guide plate 8 onto the strip 6a of the guide rail 6 due to the elasticity of the coil spring 11. When the back door S is returned further, the roller 14 rolls on the strip portion 6a, and the back door S reaches the fully closed position A via the B position.

To return the back door S from the fully open position G to the 90° open position D and hold it at the same position, return the back door S from the fully open position G to the opening degrees F, E, and H and guide the roller 14 as shown in FIG. The belt-shaped portion 6a of the rail 6 is brought into pressure contact with the elastic force of the coil spring 11, and then the backdoor S is opened from the opening degree J to the opening degree C to the 90° open position D.

(Effect of the invention) Since this invention has the above-mentioned configuration, it is extremely difficult to open the back door from the 90° open position to a fully open position of 90° or more, or to return it from the 90° or more open position to the fully closed or 90° open position. This is easy, and since there is no member protruding from the door frame W during this work, no person or object will be injured by the protruding member. Furthermore, the back door is held open at 90 degrees by three members: the contact surface of the roller, the guide rail, and the leaf spring, and there is almost no wear between these three members over many years of use, so the back door is
It is securely held at the 90° open position without wobbling when opened at 90°.

[Brief explanation of drawings]

FIG. 1 shows a perspective view of a conventional door checker for a back door. FIG. 2 shows an exploded perspective view of an embodiment of this invention. FIG. 3 shows an exploded perspective view of one element of one embodiment. FIG. 4 shows a front view of essential parts of one embodiment. FIG. 5 is a plan view showing the operating state of one embodiment. 4... Rail assembly, 5... Arm assembly, 6... Guide rail, 7... Leaf spring (elastic member), 8... Guide plate, 9... Arm, 1
1...Coil spring (spring), 13...
...Arm stop, 14... Laura, {15...
roller shaft, 16... cylinder, 18... compression coil spring}, 22... roller support member,
S...back door, W...door frame.

Claims (1)

[Scope of utility model registration request] A back door that is attached to a door frame at the rear end of a vehicle so that it can be opened and closed horizontally consists of an arm assembly that is pivotally connected to the door frame so that it can rotate horizontally, and a rail assembly that is installed on the back door. An arm is pivotably connected at one end so as to be rotatable; a roller support member is attached to the other end of the arm so as to be movable in the vertical direction; a roller is attached to the upper end of the roller support member so as to be rotatable in a horizontal plane; It is composed of an arm stopper that restricts the rotation angle to a predetermined angle of 90° or more, and a spring that rotates the arm and biases the other end toward the back door. has
A guide rail that guides the roller from the fully closed position of the back door to the 90° open position and has a contact surface at the end of the channel portion that comes into contact with the roller at the 90° open position of the back door; An elastic member is attached to the channel portion of the guide rail to hold the back door at the 90° open position, and when the back door is closed from an opening of 90° or more, the elastic member A door checker comprising: a guide plate having a roller rolling surface that is inclined with respect to the channel portion of the guide rail and a roller rolling surface that is parallel to the channel portion of the guide rail, the guide plate guiding the roller to an opening degree.