JPH0365286B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a balancer for mitigating the impact of closing a sunroof glass of an automobile, which is provided so as to be freely openable and closable.

(Prior art and its problems) As shown in FIG. 5, in an automobile 2 in which a sunroof glass 1 is pivotally connected to open and close the sunroof glass 1, conventional techniques have been used to reduce the impact when the sunroof glass 1 is closed. A balancer 3 having the structure shown in FIG. 6 is used. In this balancer 3, roof panel 4
The lower end of the arm 6 is pivotally attached to the middle body of the base 5 which is fixed to the base 5 with a pivot 7, so that the arm 6 can be raised and lowered freely, and there is a gap between the upper side of the arm 6 and the base 5. A tension coil spring 8 is connected to the tension coil spring 8, and this tension coil spring 8 biases the arm 6 in the rising direction.The tension coil spring 8 acts on the arm 6 supporting the sunroof glass 1, in other words, the arm 6 The rotational moment of the sunroof glass 1 is configured to reduce the impact when the sunroof glass 1 is closed.

However, in the conventional structure described above, when the sunroof glass 1 is closed and the arm 6 of the balancer 3 is in the horizontal position, as shown in FIG.
When the line segment connecting the connection point A on the base 5 side of the tension coil spring 8 and the connection point B on the arm 6 side, that is, the axis C of the tension coil spring 8, comes to a position passing through the center of the pivot shaft 7 or a position below it. Therefore, there was a fear that the biasing force of the tension coil spring 8 would no longer work in the direction in which the arm 6 would rise when the sunroof glass 1 was next opened.

(Object of the Invention) This invention was made to solve the above problem, and is a sunroof glass balancer that can be set so that the tension coil spring reliably biases the arm in the rising direction even when the arm falls sideways. The purpose is to provide

(Means for Achieving the Object) The present invention includes an arm pivotally connected to a base so as to be able to freely rise and fall, and a tension coil spring that is connected between the arm and the base and biases the arm in the rising direction. A sunroof glass balancer is provided with a sunroof glass balancer which uses the rotational moment of the arm to reduce the impact when closing the sunroof glass which is pivotally connected so as to be openable and closable. When the tension coil spring falls sideways, the intermediate portion of the tension coil spring is caught, and the axis of the tension coil spring near the pivot joint of the arm is regulated to a position higher than the center of the arm pivot joint, so that the biasing force of the tension coil spring is always maintained. It is configured to work in the direction of raising the arm.

(Embodiment) FIGS. 1 and 2 show front views of a balancer according to an embodiment of the present invention when the sunroof glass is opened and when the sunroof glass is closed, respectively.

In this balancer 9, a base 12 is fixed to a portion of a roof panel 11 of a car near a pivot point to which a sunroof glass 10 is pivotably attached so as to be openable and closable, and an arm 13 is raised from the middle of the base 12. Its lower end is pivotally connected by a pivot 14 so that it can be folded down. The base 12 has a U-shaped cross section, and cutouts 15 for bearings are formed in the middle of both side walls 12a in the longitudinal direction of the base 12. On the other hand, the arm 13
The roller 16 moves between the upper ends of the pair of plate members 13a.
The pair of plate members 13a are connected by a support shaft 17, and the portions of the pair of plate members 13a that are slightly closer to the middle than the support shaft 17 are connected by a pin 18, and are integrated. By engaging the pivot shaft 14 protruding from the side surface with the corresponding left and right notches 15 of the base 12, the arm 13
is pivotally connected to the base 12. Also, the two side walls 12a of the notch 15 of the base 12 on the end side in the cutting direction are connected by a pin 19, and the pin 19 and the pin 18 of the arm 13 are connected by a tension coil spring 20. While urging the arm 13 in the rising direction, this tension coil spring 2
The pivot 14 of the arm 13 moves to the base 12 with a biasing force of 0.
It is configured to prevent it from coming off from the notch 15 of. Furthermore, a spring receiving member 21 set slightly higher than the center of the pivot shaft 14 is fixed to a predetermined location on the bottom surface of the base 12 near the notch 15 with which the pivot shaft 14 of the arm 13 engages.

Next, the operation of this balancer 9 will be explained.

From the balanced state shown in FIG. 1 in which the arm 13 is maintained in a raised position by the biasing force of the tension coil spring 20 and the sunroof glass 10 is supported in an open position by this arm 13, the lock handle H is
(See Figure 5) to open the sunroof glass 10.
When the arm 13 is pulled down and closed, the arm 13
is pushed by the sunroof glass 10 and rotates clockwise against the biasing force of the tension coil spring 20, and with the sunroof glass 10 completely closed, the arm 13 assumes the sideways position shown in FIG. Regulated.
In this sideways posture, the middle part of the tension coil spring 20 is received by the spring receiving member 21, so the axis C of the tension coil spring 20 is at a higher position than the center O of the pivot 14 near the pivot 14 of the arm 13. Regulated. Therefore, even if the position of the pin 18 is lower than the center O of the pivot shaft 14 in the sideways posture of the arm 13, the biasing force of the tension coil spring 20 is always applied to raise the arm 13. It will work in the direction of movement.

Therefore, from this state, the sunroof glass 10
When the sunroof glass 10 is opened, the arm 13 is reliably raised by the biasing force of the tension coil spring 20, and the sunroof glass 10 is supported by the arm 13 in the open position shown in FIG.

In the above embodiment, a separate member is fixed to the bottom surface of the base 12 as the spring receiving member 21, but the present invention is not limited to this, and for example, the arm 1
The pivot shaft 14 of No. 3 may pass through the plate member 13a and protrude from the inner side thereof, and may also be formed to have a sufficiently large outer diameter so that it can also be used as a spring receiving member.

FIGS. 3 and 4 show front views of another embodiment of the balancer of the present invention when the sunroof glass is opened and when the sunroof glass is closed, respectively.

In this balancer 9, the pivot 14 of the arm 13
is formed so as to connect the pair of plate members 13a of the arm 13, and the plate member 1 of this pivot 14
3a is also used as a spring receiving member, and the middle part of the tension coil spring 20 is used as a non-coil part 20a consisting only of a straight wire passing through the axis C of this tension coil spring 20.
When the arm 13 is laid down, the non-coiled portion 20a is
It is configured to be received by a pivot 14 of.
The other configurations are the same as those in the previous embodiment.

In this embodiment as well, the arm 13 shown in FIG.
In the state shown in FIG. 4 in which the sunroof glass 10 is closed and the arm 13 is restricted from the upright position to the horizontal position, the non-coiled portion 20a of the tension coil spring 20, which is received by the pivot shaft 14, releases the tension coil spring. The axis C of the arm 13 is regulated at a higher position than the center of the pivot 14, and the biasing force of the tension coil spring 20 always acts in the rotational direction to raise the arm 13. Particularly in this embodiment, since the non-coiled portion 20a of the tension coil spring 20 is received by the pivot shaft 14, a part of the tension coil spring 20 does not protrude above the base 12 as in the previous embodiment. sunroof glass 1
This is extremely effective when it is not possible to secure a very large gap between the roof panel 11 and the roof panel 11. Other operations are the same as in the previous embodiment.

(Effects of the Invention) As described above, according to the sunroof glass balancer of the present invention, the tension coil spring can be set to reliably bias the arm in the rising direction even when the arm falls sideways, so it can be used as a balancer. The effect is that it can fully perform its functions.

[Brief explanation of drawings]

1 and 2 are front views of a balancer according to an embodiment of the present invention when the sunroof glass is opened and closed, respectively, and FIGS. 3 and 4 are front views of a balancer according to another embodiment of the invention, respectively. Front view with the sunroof glass open and closed, No. 5
This figure is an external perspective view of an automobile with a sunroof glass to which a conventional balancer is applied, and FIGS. 6 and 7 are front views of the conventional example when the sunroof glass is opened and closed, respectively. DESCRIPTION OF SYMBOLS 12... Base, 13... Arm, 14... Pivot (receiving member), 20... Tension coil spring, 21... Spring receiving member, C... Axis center, O... Center of pivot.

Claims (1)

[Scope of Claims] 1. An arm that is pivotally connected to a base so that it can be raised and lowered, and a tension coil spring that biases the arm in the rising direction, which is connected between this arm and the base, and can be opened and closed. In the sunroof glass balancer, the impact when the sunroof glass is closed is reduced by the rotational moment of the arm, which receives the middle part of the tension coil spring when the arm falls sideways, and the arm A balancer for a sunroof glass, characterized in that a receiving member is provided for regulating the axis of the tension coil spring near the pivot portion of the arm to a position higher than the center of the pivot portion of the arm. 2. The sunroof glass balancer according to claim 1, wherein the receiving member also serves as a pivot for pivotally connecting the arm to the base. 3. The sunroof glass balancer according to claim 2, wherein the tension coil spring has a middle portion received by the pivot shaft that is a non-coil portion passing through the axis of the tension coil spring.