JPH0144872B2 - - Google Patents

Abstract

1. Locking device for a sliding window, door or the like having at least one control rod (4) provided, on the one hand, with a least one locking element (6) transversally adjustable in relation to the said control rod (4), by moving in a slot (7) in the said control rod (4), and on the other hand with a compression device (29, 38) of the said element, characterized by the fact that the compression device aforesaid (29, 38) includes a cross-piece (29) inserted within the slot (7) in the control rod (4) and resting upon the locking element (6), the said cross-piece (29) being adjustable by means of an adjusting device (38) perpendicularly to the direction of adjustment of the locking element (6) and being provided with guides (30, 31) interacting with the control rod (4) to prevent any transverse movement of the said cross-piece (29) in relation to the control rod (4).

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises at least one operating rod with at least one latching member that is horizontally adjustable by movement within its horizontal groove.
Related to a locking mechanism for sliding doors such as windows and doors.

When closing a sliding door such as a window or door, a metal fitting is used that has a locking member such as a bolt that cooperates with a receiver fixed to the frame. However, due to the dimensional tolerances and assembly of each part, it is necessary to adjust the length of the protruding portion of the bolt in order to properly close the sliding door.

A locking mechanism for sliding windows, doors, etc. with adjustable bolts is already known, as disclosed in British Patent No. 1,396,876. This locking mechanism consists of two parts, the flanged ends of which are inserted into openings in both sides of the vertical frame of the door.

The two parts are assembled by a screw passing through one part and held in a screwed state by a threaded projection on the other part. The head of this screw points toward the interior of the room. One of the two parts is provided with a guide path, and a sliding member having a protrusion on the rear surface vertically slides within this guide path. A horizontal groove is bored in the protrusion, and a row of teeth is provided at the lower end of this groove. These teeth mesh with teeth formed on the bottom of the bolt. After the bolt is set in place, it is held by a set screw that passes through the slit and is threaded into a threaded hole in the slide member. The tightening direction of the screws is opposite to the direction of the screws holding the two flanged end parts together.

However, this latching mechanism has a number of disadvantages. In fact, the position of the bolt must be determined prior to assembly of the locking mechanism. This assembly therefore cannot be carried out at the factory, but is only possible after positioning the door relative to the frame on site. After the mechanism is assembled, the length of the bolt protrusion can no longer be changed. The reason for this is, firstly, that the two toothed parts penetrate into each other, and another reason is that the screw fastening member sunk inside the door between the two parts with flanged ends is inaccessible. I can point out that it is possible. Therefore, when installing this mechanism, the bolts often have to be removed multiple times in order to position them with minimal accuracy. Thus, to adjust the bolt, the user must loosen the screws holding the two flange-ended parts together to allow one of the parts to retract, then loosen the bolt's fixing screw and slide the two parts together. It is necessary to withdraw the bolt from the groove of the moving member, reposition the bolt while newly engaging it in the groove of the sliding member, tighten the bolt fixing screw, and then assemble the two upper parts with flanged ends. It is.

Also, depending on the material used, the door deforms, making it impossible to secure a lock. This disadvantage cannot be overcome without reassembling the locking mechanism and then removing the mechanism to adjust the bolt.

Furthermore, bolts do wear out somewhat over time, so it is desirable to replace worn or even deteriorated bolts. Even in such cases, the mechanism must be removed, adjusted, and reassembled, which increases the number of defects.

Similarly, US Pat. No. 2,710,217 discloses a locking mechanism for a door of a refrigerator or the like. Such a mechanism includes a locking base plate, the front surface of which is provided with a number of lateral knurlings. In this knurled area,
The substrate has two vertical slits and an opening between the vertical slits. The transverse indentations interlock with also transverse indentations formed on the rear surface of the receiving member. The receiving member has a groove on its front side and a rear wall of the groove with a vertical slit in the substrate and a slit aligned with the opening.

Two horizontal parallel protrusions are provided on the upper wall of the groove, and two protrusions with inclined surfaces are provided on the lower wall of this groove. The upper part of the slope is located on the rear wall side. A conical retaining member with an inclined lower surface and two horizontal shoulders is accommodated within the groove. The upper portions of the shoulders are provided with transverse serrations whose free ends engage transverse serrations drilled into the lower ends of the arms carrying the locking member.

A screw passing through the retaining member, the receiving member and the opening in the base plate in that order is screwed into a nut secured to the rear face of the base plate.

However, this mechanism has the following disadvantages. That is, tightening the screw not only brings the receiving member into tight abutment against the board, but also causes the bolt to retreat toward the board. As mentioned above, because of the slope of the retaining member towards the lower surface and the slope of the groove of the receiving member towards the lower protrusion, the conical retaining member tends to slide towards and above the substrate. The shoulder of the conical retaining member thus exerts a vertical pressure on the two arms, so that they are pressed strongly against the horizontal projection of the groove of the receiving member. Thus, bolt adjustments are made only after trial and error. This is because when tightening the screw, the bolt retreats toward the substrate, and its retreat corresponds to the tightening applied to the screw.

SUMMARY OF THE INVENTION An object of the present invention is to provide a latch mechanism for a sliding door that allows easy adjustment of the bolt relative to the door surface from the outside. Because the mechanism of the present invention is factory installable, the cost of installing the mechanism is significantly lower.

To this end, the locking mechanism for sliding panels of windows, doors and the like according to the invention has at least one elongated operating rod with a horizontal groove extending transversely to the longitudinal axis thereof, At least one latching member is fitted into the horizontal groove of the rod so that its position can be adjusted in a direction transverse to the longitudinal axis of the operating rod, and the latching member can be freely engaged and detached between the latching member and the operating rod. A strut member is interposed therebetween, the strut member being connected to an externally actuatable adjustment member for controlling the engagement of the strut member with the latching member, and the strut member being engaged with the operating rod. The present invention is characterized in that a stopper means is provided to prevent the latching member from moving laterally with respect to the operating stick.

Next, the present invention will be explained in more detail with reference to the accompanying drawings.

The metal half 1 consists of a fixing plate 2 whose inner surface 3 engages one of the outer surfaces of a hollow frame of a door (not shown). An elongated operating rod 4 slides inside the hollow frame along the fixed plate 2, and a locking member 6 such as a bolt is provided at the upper end 5 of this operating rod.

This bolt 6 slides in a horizontal groove 7 provided in the upper end 5 of the operating rod 4. In order to securely hold the bolt 6, the horizontal groove 7 is provided with a barb 9 at its upper end 8, the inner surface 10 of which partially covers the outer surface 11 of the bolt 6.

This bolt 6 is provided perpendicularly to the operating rod 4 and is composed of a portion 12 recessed into the hollow frame and a portion 13 protruding from the hollow frame on the surface of the door. There is. The end of this protruding portion 13 forms a latch head 15 having a substantially isosceles trapezoidal shape. The two wings 16, 17 of its latch head have working surfaces 18, 1 which cooperate with a retaining surface 20 provided on the end 21 of the catch 22 which is fixed to the frame or fixed frame 23.
9 each.

The retracting portion 12 of the bolt 6 has teeth 26, 27 on its opposite longitudinal sides 24, 25. By providing the same teeth 26 and 27 on opposite surfaces of the bolt 6, the bolt 6 can be installed reversibly, that is, the bolt 6 can be installed in any direction. In the illustrated embodiment, therefore, the teeth 27 are located in the horizontal groove 7 of the operating rod 4.
Teeth 2 of strut member 29 sliding vertically within
However, if the bolt 6 is installed upside down, the teeth 26 will mesh with the teeth 28. The strut member 29 is connected to the operating rod 4.
To prevent it from moving laterally to the
Two flanges 30, 3 constituting part of a stopper means as an example covering side parts 32, 33 of
1. The sliding strut member 29 has a setback portion 35 in its lower portion 34, which portion is connected to said lower portion 34 by a ramp 36. This bevel 36 cooperates with a conical end 37 of a headless, grooved or hexagon socket head screw 38. This screw 38 moves in a screw hole 39 formed in the end 40 of the horizontal groove 7 of the operating rod 4. This screw hole 39 has a horizontal slit 41 opening at the lower end 40 of the horizontal groove 7. The width of this slit 41 corresponds to the thickness of the lower part 34 of the strut member 29. Therefore, the lower portion 34 can enter the screw hole 39 vertically.

When changing the position of the bolt 6, the screw 38 is replaced by inserting a suitable tool into the insertion hole drilled in the door surface so that the conical end 37 no longer contacts the slope 36 of the strut member 29. Then, the bottom 3
4 enters the screw hole 39, and the strut member 29 descends. The tooth 28 disengages from the tooth 27 of the bolt 6, creating a clearance between the tooth 26 and the upper end 8 of the horizontal groove 7 of the operating rod 4. In this way, the bolt 6 can be moved freely in the horizontal direction.

After the bolt 6 has been newly positioned, or after a new bolt 6 has been installed in a predetermined position, turn the screw 38 constituting the adjustment member in the opposite direction to adjust the conical end 37.
is brought into contact with the slope 36 of the strut member 29.
The teeth 28 of the strut member 29 are similar to the teeth 27 of the bolt 6.
and presses up the bolt 6 via its strut member 29 until the teeth 26 come into contact with the upper end 8 of the horizontal groove 7 of the operating rod 4. When tightened, the bolt 6 will not move at all due to the cooperation of teeth 28 and teeth 27. Of course, the screw 38 is merely a means for latching and removing the bolt 6 in a predetermined position. In short, instead of this screw 38, an eccentric body or the like that acts directly or indirectly on the bolt 6 through an intermediate member may be used.

[Brief explanation of drawings]

FIG. 1 is a front sectional view of the latching mechanism of the present invention in a tripped state, and FIG.
3 is a front sectional view, FIG. 3 is a view of the locking mechanism shown in FIG. 1 seen from the left, FIG. 4 is an exploded perspective view of the main parts of the locking mechanism according to the present invention, and FIG. Perspective view. 4... Operating rod, 6... Latching member (bolt), 7... Horizontal groove, 29... Strut member, 30, 31... Flange, 38... Adjusting member (screw).

Claims (1)

Claims: 1. At least one elongated control rod with a horizontal groove extending transversely to the longitudinal axis thereof, the control rod having a position adjustable in the horizontal groove of the control rod in a direction transverse to the longitudinal axis of the control rod. At least one latching member is freely fitted into the strut member, and a strut member is interposed between the latching member and the operating rod, and the strut member is removably engaged with the latching member. A stop means is connected to an externally actuatable adjustment member for controlling the engagement of the member and the latching member, and the strut member includes a stop means for engaging the operating rod to prevent lateral movement of the latching member relative to the operating rod. A locking mechanism for a sliding panel of fittings, characterized in that it is provided with a locking mechanism. 2. The locking mechanism according to claim 1, wherein the stopper means is constituted by a pair of flanges provided on a strut member that locks on opposite sides of the operating rod. 3. The latching mechanism according to claim 1, wherein the strut member and the latching member are provided with teeth that can be engaged with each other on opposing sides thereof. 4. The latching mechanism according to claim 3, wherein the latching member is also provided with teeth that can engage with the teeth of the strut member on the side opposite to the strut member. 5. The adjustment member has a conical engagement surface that engages with the strut member and moves it in the longitudinal direction of the operating rod, and the strut member is formed with a corresponding slope that engages with the engagement surface. The locking mechanism according to claim 3, characterized in that: 6. The locking mechanism according to claim 1, wherein the adjusting member is an adjusting screw screwed into a screw hole formed at the lower end of the horizontal groove of the operating rod. 7. A patent claim characterized in that the upper end of the horizontal groove of the operating rod is formed with a fold that partially covers the outer surface of the locking member, and the lower end is formed with a slit that communicates with the screw hole. The latching mechanism according to item 6 of the scope.