JPH0446047Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The invention is a ventilation window installed in industrial vehicles such as forklifts, shovel loaders, and crane trucks.
This relates to locking devices such as windows for connection with the outside.

(Conventional technology) The sides of the driver's cab of industrial vehicles generally have a width of 300 mm.
A relatively small window of about mm is provided. The glass of this window is generally movable up and down and is locked at the top. The role of this window is primarily to connect the building with the outside during rainy weather.

However, with conventional locking devices, when the lock is released, the window glass will fall under its own weight, and the only options available are fully open or sealed. For this reason, when it rains and a driver smokes a cigarette, he or she may want to open the window slightly to ventilate the vehicle, but it has not been possible to fix the window in that position.

On the other hand, for example, Japanese Utility Model Publication No. 8-14425 discloses that locking claws that can be moved in and out in both left and right directions are provided on both the left and right sides of the window glass, and that the window frames on both the left and right sides have a plurality of engaging holes that are spaced apart vertically. An elevator window support device is disclosed. According to this device, the opening degree of the window can be adjusted in stages.

(Problem to be solved by the invention) However, in the device described in Japanese Utility Model Publication No. 8-14425, the locking pawl is held in a state of protruding to both the left and right sides in order to maintain the state of engagement with the engagement hole. It is necessary to Therefore, in order to open or close the window, it is necessary to simultaneously operate the left and right locking claws to release the engagement with the engagement hole at the same time, which requires operation with both hands. Not suitable. In addition, since the direction of gravity of the window glass intersects with the direction in which the locking pawl extends and the direction in which the locking pawl moves, complex stresses act on the locking pawl that supports gravity, making the design difficult and complicated. It becomes a composition.

The present invention has been developed in view of the above circumstances, and aims to provide a locking device with a simple structure that allows the degree of opening of a window to be freely adjusted in stages with one-handed operation.

[Structure of the idea]

(Means for Solving the Problems) The locking device of the present invention protrudes downward from either the right end or the left end of the upper part of the window frame provided on the interior wall of the vehicle, and is arranged at intervals in the vertical direction. A lock receiving part having a plurality of engagement holes provided therein and opening in a substantially horizontal direction, and a pedestal fixed at a position facing the lock receiving part at the upper end of the window glass that moves vertically along the window frame. , an engagement member that extends upward from the base and is swingably held on the base; and the engagement member protrudes approximately horizontally from the upper end of the engagement member, and its lower end surface engages with the inner circumferential surface of the engagement hole. It is characterized by consisting of a locking pawl that supports the weight and restricts the downward movement of the window glass, an operation section that is connected to the engagement member and allows the engagement member to be manually swung, and a lock section. .

Note that it is also preferable that the upper end surface of the locking pawl be tapered so that it can be engaged with the engagement hole simply by pushing up the window glass. It is also preferable that the lower end surface, which supports the weight of the window by contacting the lock receiving portion of the locking pawl, has an arcuate shape. As a result, even if the engagement of the locking pawl with the engagement hole is slightly deviated due to manufacturing errors in the locking pawl or vibrations during operation, the reaction force of the weight of the window will be absorbed by the arc-shaped lower end of the locking pawl. Because it is applied in the normal direction of
The locking pawl is prevented from coming off the engagement hole.

(Function) In the lock device of the present invention, in a window that slides in the vertical direction, the direction in which the lock receiving portion and the engaging member extend and the direction in which the engaging member moves are in the same vertical direction as the direction of gravity of the window glass. Therefore, no extra force is applied to the lock receiving portion and the engaging member, and the configuration for adjusting the opening degree becomes simple.

Furthermore, a locking claw engages with the engagement hole on either the right end or the left end of the upper portion of the window to support the window glass from falling. On the other hand, at the other end, the window glass and the window frame are in sliding contact so as to be movable only in the vertical direction. Therefore, the window glass does not tilt, and a small window glass for an industrial vehicle can be sufficiently supported by locking only one end, making it possible to open and close it with one hand.

When the window is opened, the lock receiver protrudes downward from the top of the window frame, but since it is located at one end of the left and right sides, it does not obstruct your view or get in the way when you take your body out. .

(Example) The present invention will be described below based on specific examples.
FIGS. 1 and 2 show an overall view of a communication window for an industrial vehicle to which the locking device of the present invention is applied. This window is comprised of a window frame 1 provided on the side of the vehicle interior, a fixed glass 2 fixed to the lower part of the window frame 1, and sliding glasses 3 that move vertically within the left and right window frames 1.

The fixed glass 2 is fixed to the window frame 1 at the left, right, and lower ends via weather strips 4, and a matching sash 5 is fixed to the upper end.

The slide glass 3 is vertically movable, and when the window is closed, its upper end is sandwiched between the launch channel 6 fixed to the upper end of the window frame 1, and its lower end abuts against the mohair 7 fixed to the mating sash 5. This prevents water and dirt from entering the vehicle interior. A catch 8, which is a lock receiver, extends downward and is fixed to the upper right end of the window frame 1. This catch 8 has two engagement holes 81 and 82 in the vertical direction.
It has a constricted shape with an edge bent toward the outside of the passenger compartment.

At the upper right end of the slide glass 3, there is a lock part 9.
is formed. This lock portion 9 includes a pedestal 91 fixed to the slide glass 3 with screws, and extends upwardly while being pivoted by the pedestal 91.
an engaging member 93 having a substantially L-shaped cross section that is swingable in a direction toward and away from the engaging member 9;
3, and a locking claw 92 protruding toward the slide glass 3 from the upper end of the slide glass 3.

The other end of the engaging member 93 constitutes a lever 94 that protrudes toward the interior of the vehicle, and a spring 95 is provided at the bottom of the lever 94. This spring 95 constantly urges one end portion having the locking claw 92 toward the slide glass 3 side. Then, by pinching the lever 94 protruding toward the interior of the vehicle at the other end against the biasing force of the spring 95 so as to bring it closer to the support plate 96 extending from the base 91, the one end with the locking pawl 92 is fixed to the slide glass. 3
It is configured to move in a direction away from. Further, the lower end surface 97 of the locking pawl 92 that engages with the engaging holes 81 and 82 and supports the weight of the slide glass 3 by contacting the catch 8 extends from the lower end surface 97 to the engaging member 9.
3 and the pivot point of the pedestal 91 as the radius of curvature.

The locking device of this embodiment constructed as described above is locked in the state shown in FIG. That is, the slide glass 3 is in contact with the launch channel 6 on the upper part of the window frame 1 with the locking pawl 92 engaged with the engagement hole 81 above the catch 8.
The arcuate lower end surface 97 of the locking pawl 92 and the peripheral wall surface of the engagement hole 81 abut, and the weight of the slide glass 3 is supported by the abutting surface. That is, the vector of the reaction force of the weight of the slide glass 3 points in the normal direction of the arc at the point of contact between the arcuate lower end surface 97 and the catch 8. Also, the locking claw 92 is a spring 95.
is urged in a direction toward the slide glass 3. Furthermore, the catch 8 has a converged shape to ensure sufficient rigidity. Therefore, problems such as the locking pawl 92 coming off from the engagement hole 81 due to vibrations during work are prevented.

When opening the window, by pinching the lever 94 with the fingers of one hand so as to bring it closer to the support plate 96, the engaging member 93 swings and the locking pawl 92 disengages from the engaging hole 81. Then, the slide glass 3 is guided by the window frame 1 and slid downward, and if you want to open the window slightly, a locking claw 92 is inserted into the lower engagement hole 82.
engage. At this time, at the left end where there is no locking device, the entire left end surface of the slide glass 3 is covered with the window frame 1.
It is in sliding contact with. Furthermore, the width of the slide glass 3 is also small. Therefore, there is no problem such as tilting of the slide glass 3. When the window is fully opened, the locking claws 92 are not engaged with the engaging holes 81 and 82,
Slide glass 3 is held by window frame 1 at the lower end and lowered to a stop position. Through the above operations, the slide glass 3 can be in three states: fully open, slightly opened, and closed.

There is also a catch 8, which is a lock receiving part, and a pedestal 9.
1. The locking part consisting of the locking pawl 92 and the engaging member 93 is formed on the right end of the window frame 1 and the slide glass 3, so it does not obstruct the view and does not interfere with driving when the window is fully opened. It is highly safe as it does not get in the way even if your hands go outside of your body.

[Effect of idea]

In the lock device of the present invention, the degree of opening of the window can be freely adjusted in stages according to the number of engagement holes in the lock receiver. This allows the windows to be left slightly open during times of rain, allowing ventilation while preventing rain from seeping in. Further, the opening/closing of the window and the stepwise adjustment of the degree of opening can be easily performed with one hand.

Since the structure can be extremely simple, the number of parts is small and the cost is low. Moreover, the weight of the window glass hardly increases, and operation with one hand is not hindered.

Furthermore, since the lock receiving part and the lock part are provided on either the left or right end of the window frame or the window glass, there is no problem in terms of safety and visibility. If one end surface of the locking pawl is made into an arc shape or the lock receiving part is made into a highly rigid constricted shape, it is possible to more reliably prevent the lock from coming off due to vibrations during work.

[Brief explanation of the drawing]

1, 2, and 3 relate to a locking device according to an embodiment of the present invention, FIG. 1 is an overall front view of a window to which the locking device is applied, and FIG. 2 is an A of FIG. 1.
-A sectional view, and FIG. 3 is an enlarged perspective view of the main part of the locking device. 1...Window frame, 2...Fixed glass, 3...Sliding glass, 8...Catch, 9...Lock part, 8
1, 82...Engagement hole, 92...Latching claw, 94...
Lever, 95...spring.

Claims (1)

[Scope of claim for utility model registration] (1) Projecting downward from either the right or left end of the upper part of the window frame provided on the inner wall of the garage, provided at intervals in the vertical direction, and opening approximately horizontally. a lock receiver having a plurality of engagement holes, a pedestal fixed at a position facing the lock receiver at the upper end of the window glass that moves up and down along the window frame; An engaging member extends substantially horizontally from the upper end of the engaging member and is held on the pedestal in a swingable manner so that the lower end surface of the engaging member engages with the inner circumferential surface of the engaging hole. The window glass is comprised of a locking pawl that supports the weight and restricts the downward movement of the window glass, an operating section that is connected to the engagement member and allows the engagement member to be manually swung, and a lock section. Features: Window locking device for industrial vehicles. (2) The locking device for a window for an industrial vehicle according to claim 1, wherein the locking pawl has an arcuate cross section with the lower end surface curving in the direction in which the locking pawl extends.