JPH0247174Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a balancer that biases the elevating window body of an elevating opening/closing window used in a vehicle or the like in the upward direction, that is, in the direction of closing the window.

(Prior art and its problems) As a balancer for a lift window as described above, there is a pantograph link system in which the lower side of the lift window body is supported by a pantograph link mechanism biased in the extension direction by a spring or the like. balancers are common. This pantograph link type balancer has the disadvantage that it requires a large number of parts, takes time to assemble, and is expensive. As a balancer that can eliminate these drawbacks, there is a so-called Schilleren balancer in which the lower side of the elevating window body is supported by the free end of a single vertically swinging link that is biased in the upward movement direction by a spring or the like. However, in this Schilleren type balancer, the supporting position of the window body of the vertical swing link moves in the width direction of the window body as the lift window body moves up and down, so that the lower side of the lift window body It is not possible to stably support the center part of the side (directly below the center of gravity). Therefore, a moment is applied to tilt the elevating window body,
There is a drawback that the elevating window main body cannot be raised and lowered smoothly.

(Means for solving the problems) The present invention proposes a balancer for elevating windows that can solve the conventional problems as described above.
The feature is that the single free end of the lower link of the double center-fold link is pivotally connected to the fixing frame directly below the center of the lower side of the elevating window body, and as the double center-fold link bends and stretches, the two A guide link that restricts the free end of the upper link of the link so that it moves up and down approximately vertically is interposed between the intermediate portion of the upper link of the center-folded double link and the fixed machine frame. The present invention is characterized in that a biasing means is provided for engaging the single free end of the upper link with the center portion of the lower side of the elevator window main body and biasing the center-fold double link in the direction of extension.

(Effect of the invention) In the balancer of the invention as described above,
The lifting window main body is urged in the upward direction by the center-fold double link which is urged in the extension direction by the urging means, and the magnitude of the urging force of the urging means is adjusted to By selecting it in accordance with the weight of the window main body, it can function as a balancer that reduces the required force when raising the elevating window main body.

Moreover, although it can be constructed from a total of three individual links, two upper and lower links forming the double center-fold link and one guide link, the support position of the elevating window main body by the double center-fold link is limited. can be made substantially constant at the center of the lower side of the elevating window body, and applies an upward biasing force directly below the center of gravity of the elevating window body, regardless of the vertical position of the elevating window body, and No tilting moment is required.

(Embodiment) An embodiment of the present invention will be described below based on the attached illustrative drawings. 1 is an elevating window main body, and the lower side of the window glass 3 guided by the left and right elevating guides 2 is A support frame 4 is attached. 5 is up and down 2
It is a center-fold double link in which single book links 6 and 7 are pivotally connected by a support shaft 8, and the lower link single piece 7
The free end (lower end) of the lift window main body 1 is pivotally connected to the fixed machine frame 9 by a support shaft 10 directly below the center of the lower side of the lift window main body 1, and the free end (upper end) of the upper link unit 6 is connected to a rotating body 11. is pivotally mounted by a support shaft 12. A horizontal groove member 1 having a C-shaped cross section is attached to the longitudinal center of the lower side support frame 4 of the elevating window main body 1.
3, the rotating body 11 is fitted in such a manner that it can move slightly in the horizontal direction.

Reference numeral 14 denotes a guide link, one end of which is attached to a support shaft 1 at the middle of the upper link of the double link 5.
5, and the other end is pivotally connected to the fixed machine frame 9 by a support shaft 16, so that the center bend 2
The locus of the bending and stretching movement of the double center-bent link 5 is regulated so that the free end of the single upper link 6, that is, the rotating body 11, moves up and down approximately vertically as the link 5 bends and stretches. . Of course in this case,
The free end of the upper link unit 6, that is, the rotating body 1
1 will be displaced slightly in the horizontal and lateral directions, but this displacement is allowed by the movement of the rotating body 11 within the horizontal channel 13.

Reference numeral 17 denotes a biasing means for biasing the center-fold double link 5 in the direction of extension, and the guide link 14
The arm 1 is connected downward from the end on the support shaft 16 side of the
8 and the fixation frame 9, the tension coil spring 19 is stretched between the fixation frame 9 and the fixation frame 9. Of course,
The tensioning locations of the tension coil spring 19 are not limited to the locations in this embodiment, and for example, the support shaft 16 of the guide link 14 or its vicinity, the center-folded portion of the double link 5, or the center-folded portion of the support shaft 8 or It is also possible to extend the space between the two and nearby locations. Although the tension coil spring 19 is used as the biasing means 17, a compression coil spring or a gas spring or the like may also be used depending on the mounting position.

20 is the free end of the arm 18 and the fixed machine frame 9;
Although the cylinder unit for opening and closing the elevating window is interposed between the elevating window and the elevating window, it can be omitted when the elevating window main body 1 is manually raised and lowered.

According to the above configuration, the tension coil spring 1
The guide link 14 is moved to the support shaft 16 by the tensile force of 9.
The upward biasing force of the guide link 14 causes the center-folded double link 5 to change from the bent position shown by the imaginary line to the extended position shown by the solid line, that is, the direction of extension. is energized by
The urging force in the extension direction of the double center-folded link 5 is transmitted upward through the rotary body 11 and the channel member 13 to the center of the lower side of the elevating window main body 1, and the elevating window main body 1
will be biased in the upward direction. Therefore, the strength of the tension coil spring 19 is selected so that the biasing force acting upwardly on the elevator window main body 1 from the center-fold double link 5 is slightly smaller than the downward gravitational force acting on the elevator window main body 1. By doing so, it can function as a balancer that reduces the required force when raising and closing the elevator window main body 1.

When the elevator window main body 1 is lowered from the closed movement limit position shown by the solid line in FIG. 1 to the open movement limit position shown by the imaginary line,
The double bent link 5 in the extended position is deformed to the bent position, and along with this, the guide link 14 is moved to the support shaft 16.
The tension coil spring 19 is stretched via the arm 18.

As described above, when the double link 5 bends and stretches as the lift window main body 1 moves up and down, the free end of the single upper link 6, that is, the rotating body 11 that supports the lift window main body 1 moves up and down. The guide link 14 is bent 2 in the middle so that it moves up and down in a substantially straight line along an imaginary vertical line passing through the center position of the lower side of the window body 1.
Since the bending/extension movement locus of the link 5 is restricted, the lift window main body 1 is always supported by the double link 5 bent at the center in the width direction, that is, approximately directly below the center of gravity. In other words, since the lift window main body 1 always receives an upward biasing force at the center of the lower side, there is almost no possibility that the lift window main body 1 will be tilted by the biasing force.

In the embodiment, the guide link 14 is driven up and down by the fluid pressure supplied to the cylinder unit 20,
The lifting window main body 1 can be lifted and opened/closed via the double center-fold link 5, but the driving force for lifting and closing the lifting window main body 1 against gravity is the urging force of the tension coil spring 19. It can be reduced by

(Effects of the invention) As shown in the above embodiment, the lift window balancer of the invention has an extremely simple structure, requires a very small number of parts, and is easy to assemble compared to the conventional pantograph link type balancer. It is easy to perform and can significantly reduce costs.

Moreover, like the pantograph link type balancer, an upward biasing force can always be applied to the widthwise central portion of the lift window body, so that the lift window body can always be smoothly raised and lowered.

[Brief explanation of the drawing]

FIG. 1 is a front view, and FIG. 2 is an enlarged side view of main parts. 1... Elevating window body, 5... Center-folded double link,
6... Single upper link, 7... Single lower link,
8, 10, 12, 15, 16... Support shaft, 9... Fixed machine frame, 11... Rotating body, 13... Channel member, 14
...Guide link, 17...Biasing means, 18...
Arm, 19...Tension coil spring, 20...
...Cylinder unit.

Claims (1)

[Scope of utility model registration request] The single free end of the lower link of the double center-fold link is pivoted to the fixing frame directly below the center of the lower side of the elevator window body, and as the double center-fold link bends and stretches, the upper part of the double link A guide link that restricts the free end of the single link to move up and down approximately vertically is interposed between the intermediate portion of the single upper link of the double center-folded link and the fixed machine frame, and the upper link of the double link is fixed. A balancer for an elevator window, comprising a biasing means for engaging the single free end with the central portion of the lower side of the elevator window main body and biasing the center-fold double link in the extension direction.