JP3491772B2 - Opening adjuster - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to an opening / closing lid of a window or a casing to hold the window or the like at a predetermined open position, and in particular, a pair of rod-like rods in which a restraining rod is expandable and contractible. The present invention relates to an opening regulator configured by a body.

[0002]

2. Description of the Related Art An opening regulator of this type is disclosed, for example, in Japanese Patent Laid-Open No.
It is known from Japanese Patent Publication No. 33543. Here, a check rod is configured by a guide frame having a C-shaped cross section and a strip-shaped rod body inserted into the guide frame. A lock pin, which is pressed down and biased by a spring, is provided on the upper surface of one end of the guide frame, and lock holes into which the pins are fitted are provided at a plurality of positions of the rod body.

[0003]

As described above, in the opening amount adjuster in which the lock mechanism is provided on the upper surface of one end of the guide frame, the case for accommodating the lock pin and the spring and the operation knob are largely projected on the frame. Therefore, it is susceptible to mischief and the appearance is not good. Since the lock mechanism is provided on the projecting end side of the guide frame, it is necessary to lean out and perform the lock release operation when closing the window that was fully opened, especially if the extendable stroke of the adjuster is large. There is danger.

An object of the present invention is that the restraining rod is composed of a hollow body such as an inner and outer double pipe material or a frame body, and a lock mechanism is incorporated inside the hollow body so that it is difficult to be mischievous and the whole body is protected. An object of the present invention is to provide an aperture controller that has a simple appearance and can improve the appearance. Another object of the present invention is to provide an opening amount adjuster in which an operating knob for a lock mechanism is provided at an end portion of a restraint rod on the side of a window frame, and an unlocking operation can be performed on the window frame. is there. Another object of the present invention is to unlock the lock mechanism by rotating the operating knob around the central axis of the restraining rod,
Therefore, unless the user's explicit intention is made, the unlocking operation cannot be performed, and even if the operation knob is accidentally touched, the opening amount adjuster that can maintain the locked state and reliably prevent falling etc. To provide.

[0005]

The opening controller of the present invention has a stretchable restraining rod 6 composed of a first shaft 4 and a second shaft 5 each formed of a hollow body. A lock mechanism for preventing expansion and contraction of the restraint rod 6 is provided between the five. The lock mechanism is formed of a rod-shaped body, and has a lock bar 15 formed with a plurality of engaging portions 19 along the longitudinal direction, and a lock plug 1 that guides the lock bar 15 so as to be relatively movable in the longitudinal direction.
6, and a spring 17 for biasing one of the lock bar 15 and the lock plug 16 to rotate around the axis toward the lock posture.
Including and The lock plug 16 has a through hole 29 that allows relative movement of the lock bar 15 in the longitudinal direction, and a lock bar 15
, The lock plug 16 and the lock bar 15 are urged by the spring 17 in a state where the engaging portion 19 is located in the engaging hole 30. The lock plug 16 is configured so as to relatively rotate and engage in abutting engagement at two points in the axial direction. An operation knob 11 is provided at one of the ends of the first shaft 4 and the second shaft 5 so as to be rotated about the axis to switch the lock mechanism to the unlocked state against the biasing force of the spring 17. .

Specifically, the lock bar 15 is formed with a plurality of engaging portions 19 which are recessed. Correspondingly, the lock plug 16 is provided with a protrusion 33 that fits into the engaging portion 19 at the lock position. On the contrary, a plurality of engaging portions 19 are formed on the lock bar 15 so as to project. Correspondingly, the lock plug 16 is provided with a recess 44 that allows the engaging portion 19 to enter and engage at the lock position. The first shaft 4 is rotatably supported by the fixed bracket 9 via a support shaft 7. A strip plate-shaped lock bar 15 is arranged inside the first shaft 4. The lock plug 16 is fixed inside the insertion start end of the second shaft 5. At the end of the first shaft 4 on the bracket 9 side, an operation knob 11 for rotating the lock bar 15 is arranged. A screw coil type spring 17 for biasing the lock bar 15 to rotate toward the locked position is housed on the inner surface of the end portion of the first shaft 4 adjacent to the operation knob 11.
The first shaft 4 and the second shaft 5 are formed of a metal tube. The support shaft 7 is provided so as to penetrate the first shaft 4 in the radial direction. An escape groove 22 is provided in the lock bar 15 to avoid operation interference with the support shaft 7. One end of the spring 17 is hooked on the support shaft 7, and the other end is hooked on the lock bar 15.

[0007]

The first shaft 4 and the second shaft 5 can be displaced by expansion and contraction, one side of which is provided with a lock plug 16 and the other side of which is provided with a lock bar 15. Therefore, when the first shaft 4 and the second shaft 5 expand and contract, the lock plug 16 and the lock bar 15 can move relative to each other, whereby the lock position can be changed. The lock plug 16 and the lock bar 15 relatively rotate around the axis to switch between a locked state and an unlocked state, and the urging force of the spring 17 continues to maintain the locked state. In the locked state, the engaging portions 19 provided on the lock bar 15 are in abutting engagement with the lock plug 16 at two axial positions, so that the lock bar 15 and the lock plug 16 cannot move relative to each other. When the operation knob 11 is rotated around the axis against the spring 17, the lock bar 15 and the lock plug 16 are relatively rotated to cancel the abutting engagement of the engaging portion 19, so that the lock bar 15 The lock plug 16 can move relatively. As described above, the through hole 29 and the engaging hole 30 are provided in the lock plug 16 in order to relatively rotate the lock bar 15 and the lock plug 16 to switch the state. When applied to the window 3, the shaft 4 of the first shaft 4 and the second shaft 5 on the side where the operation knob 11 is provided at the shaft end is attached to the window frame 1 and the operation knob 11 can be operated at hand. To do so.

When the engaging portion 19 of the lock bar 15 is formed as a recess, the inner wall of the recess is in abutting engagement with the lock plug 16 in the axial direction. Further, when the engaging portion 19 is formed so as to project, the projecting side wall is in abutting engagement with the lock plug 16 in the axial direction. The strip bar-shaped lock bar 15 can be formed by pressing. The operation knob 11 can be directly attached to the lock bar 15 by positioning one end thereof at the shaft end of the first shaft 4.

[0009]

According to the present invention, the lock bar 1 is relatively rotated around the axis to switch between the locked state and the unlocked state.
Since the lock mechanism is configured by using 5 and the lock plug 16 as the engaging elements, the lock mechanism can be assembled inside the first shaft 4 and the second shaft 5, and the operation knob 11 for releasing the lock is provided on either side. It can be arranged at the shaft end of the shaft 4. With this, unlike the conventional opening degree adjuster, it is possible to prevent a part of the lock mechanism and the operation knob from protruding on the upper surface of the restraining rod 6 and the like, and it is possible to prevent the object from being mischievous. The overall impression can be simplified and the appearance can be improved.

When the opening degree adjuster is applied to the window 3, the unlocking operation can be performed on the window frame 1 by installing the opening degree adjuster in a state where the operation knob 11 is located on the indoor side. When closing the opened window 3, it is not necessary to fold the body out of the window frame 1, and even if the expansion / contraction stroke of the restraining rod 6 is large, it is possible to safely operate the opening degree adjuster. Since the lock knob is unlocked by rotating the operation knob 11 about its axis, even if the operation knob 11 is accidentally contacted with the operation knob 11, the operation knob should be rotated by the force. It is possible to reliably prevent the lock mechanism from being inadvertently unlocked as compared with, for example, a push button type or pull button type operation knob.

[0011]

【Example】

(Embodiment 1) FIGS. 1 to 6 show an embodiment in which the present invention is applied to an opening controller for windows. In FIG. 2, reference numeral 1 is a window frame, 2 is a hinge, and 3 is a window that can be swung open / close around the hinge 2. An opening amount adjuster is provided between the window frame 1 and the window 3 to fix and hold the window 3 at a predetermined opening angle. The opening amount adjuster is a check rod 6 composed of a first shaft 4 and a second shaft 5 that are telescopically inserted, and both ends of the check rod 6 are attached to a window frame 1 and a window 3 via support shafts 7 and 8. It is composed of brackets 9 and 10 for mounting, a lock mechanism incorporated inside the restraining rod 6, an operation knob 11 for unlocking, and the like.

The first shaft 4 and the second shaft 5 are formed of steel pipes such as stainless pipes having different diameters. As shown in FIG. 3, the bracket 10 on the window 3 side is made of a U-shaped press-molded product, and the shaft ends of the second shaft 5 are seated by the upper and lower walls of the bracket 10.
The second shaft 5 is horizontally rotatably connected by the support shaft 8 which is supported by the support shaft 8 and is inserted through the upper and lower walls and fixed by caulking. The support shaft 8 also vertically penetrates a plug 14 that is internally fitted to the shaft end of the second shaft 5. In FIG. 4, a bracket 9 on the side of the window frame 1 is made of a hat-shaped press-molded product, and a support shaft 7 caulked and fixed to the upper wall of the bracket 9 vertically pierces the first shaft 4 and supports it horizontally rotatably. . Similar to the second shaft 5, the seats 13 are provided above and below the first shaft 4.
Intervene. As shown in FIG. 6, each seat 13 has a first shaft 4
(Or second shaft 5) made of a plastic molded product having a concave surface along the peripheral surface thereof.

3 to 6, the lock mechanism includes a lock bar 15 made of a rod-shaped body, a lock plug 16 made of a plastic molded product, and a spring 17 for urging the lock bar 15 to rotate toward a locked position. Become.

The lock bar 15 is formed by stripping a metal plate material such as a stainless steel plate or a steel plate into a strip plate shape, and a plurality of engaging portions 19 are formed in the front and rear edges of the lock bar 15 so as to have a narrow width at both ends in the longitudinal direction. The mounting parts 20 and 21 are provided. The lock bar 15 is housed in the first shaft 4 and intersects the support shaft 7. for that reason,
A portion that intersects with the support shaft 7 is formed wider than others, and an escape groove 22 for inserting the support shaft 7 is provided in the plate surface thereof. Since the escape groove 22 is formed in an oval shape, the lock bar 15 can be tilted about the axis within the range.

In this embodiment, the engaging portions 19 are formed at four positions in the longitudinal direction of the lock bar 15, and when the opening angle of the window 3 becomes 30 °, 45 °, 60 °, 90 °, the locked state is obtained. It can be switched to. As shown in FIG. 3, a slide ring 23 and a backup metal ring 24 are fitted into the mounting portion 21 of the lock bar 15 on the second shaft 5 side, and these are fixed by screws 25. The slide ring 23 is formed of a plastic material having excellent lubricity, and is always in sliding contact with the inner surface wall of the second shaft 5 so that the lock bar 15
The center position of the end of the is aligned with the axis. The slide ring 23 also functions as a stopper that defines the extension limit of the restraining rod 6. In FIG. 3, an end cap 26 for slidingly guiding the second shaft 5 is fixed to the end portion of the first shaft 4, and the end cap 26 is also made of the same material as the slide ring 23.

4 to 6, the lock plug 16 is made of a metal such as a stainless steel plate as a raw material and is a machined product in which the shaft portion 16a and the flange 16b are integrally formed. Through the second shaft 5
The shaft portion 16a is fastened and fixed by a screw 28 (see FIG. 5) screwed from the outer surface of the second shaft 5 into the insertion start end of the second shaft 5. The slide ring 32 is formed of the same material as that of the slide ring 23 described above, and the peripheral surface thereof is supported by the inner surface of the first shaft 4 so that the axis of the second shaft 5 is the center of the first shaft 4. It matches with and prevents rattling. In the lock plug 16,
Through hole 29 and engaging hole 30 are provided along the axis,
The escape portion 31 is formed in the inner end side half of the shaft portion 16 a adjacent to the engagement hole 30. The through hole 29 is formed in a rectangular cross section that is slightly larger than the cross sectional outline of the lock bar 15, and the lock bar 15 is positioned inside the through hole 29 as shown by imaginary lines in FIGS. In this state, the lock plug 16 can move freely along with the second shaft 5. The engaging hole 30 is formed in a fan-shaped cross section, and the lock bar 15 can be rotated by a certain angle only when the engaging portion 19 is located inside the engaging hole 30. As shown in FIG. 4, the engagement hole 30 is formed between the flange 16b and the middle of the shaft portion 16a. Therefore, when the lock bar 15 rotates as described above, it is necessary to avoid the front and rear edges of the lock bar 15 from abutting and interfering with the lock plug 16. For this reason, the escape portion 31 having a fan-shaped cross section is formed in the shaft portion 16a. There is.

In the locked state, the engagement hole 19 of the lock bar 15 rotates in the engagement hole 30, and the inner wall 1 of the recess is formed.
9a is in a state of being received and brought into contact with the end wall on the side of the flange 16b and the step portion on the side of the escape portion 31 (see FIG. 4). Further, the protrusion 33 between the end wall and the step portion is fitted in the engaging portion 19 (see FIG. 1). Therefore, the lock bar 15
Can abut against the lock plug 16 at two axial positions to prevent the lock plug 16 from moving in the axial direction.

The spring 17 is a torsion coil type spring, and has hooking arms 34 and 35 at the ends of each spring as shown in FIG. The entire spring 17 is housed in an end cap 36 fixed to the first shaft portion 4 in a state where its coil portion is fitted onto the mounting portion 20 of the lock bar 15, and the hook-shaped one hooking arm 34 is attached. It is hooked on the support shaft 7 and the other inverted U-shaped hooking arm 35 is hooked on the mounting portion 20 of the lock bar 15. As a result, the lock bar 15 is urged to rotate counterclockwise in the cross-sectional state of FIG. 5, and receives a turning force in a direction that always maintains the locked state. The mounting portion 20 further projects from the end cap 36, and the operating knob 11 is externally fitted to this protruding portion, and the operating knob 11 is screwed with the screw shaft 37 shown in FIG.
And the mounting portion 20 are fastened and fixed. The operation knob 11 is a plastic molded product, and forms a slip stopper on the peripheral surface having the same diameter as the first shaft 4.

When using the opening controller, the operation knob 11 is positioned on the side of the window frame 1 as shown in FIG. 2 so that the unlocking operation can be performed on the window frame 1. In Figure 2,
Although the window 3 is fixed at an opening angle of 45 °, the engaging portion 19 of the lock bar 15 also engages with the lock plug 16 as shown in FIG. 5, and the second shaft 5 moves to the first position. It is prevented from expanding and contracting with respect to the shaft 4. From this state, if the operation knob 11 is rotated around the axis against the spring 17,
The entire lock bar 15 rotates about its axis, and
Since the state is switched to the unlocked state as shown by imaginary lines in (a) and (b), the lock plug 16 can be expanded and contracted along the lock bar 15. That is, the window 3 can be operated on either side of opening and closing.

After the lock bar 15 is switched to the unlocked state, when the restraining rod 6 is expanded and contracted, a portion wider than the engaging portion 19 enters the engaging hole 30 and cannot be rotated to the locked state. Therefore, after that, the hand can be released from the operation knob 11, and when the lock stopper 16 moves to the next position of the engaging portion 19, the lock bar 15 and the lock stopper 16 automatically engage in lock.

(Embodiment 2) FIG. 7 shows an embodiment in which the arrangement of the first shaft 4 and the second shaft 5 is changed. There, the large-diameter first shaft 4 is connected to the window 3 side, and the small-diameter second shaft 5 is connected to the window frame 1 side. In addition, the plug 14 inserted into the shaft end of the first shaft 4
One end of the lock bar 15 is inserted into and engaged with the lock bar 15, and both of them 14 and 15 are fixed by penetrating with the support shaft 8. The operation knob 11 is inserted into the end of the second shaft 5 and fixed by the pin 39.
The shaft end of and the shaft portion of the operation knob 11 are rotatably supported by a bearing 40 formed integrally with the support shaft 7. More specifically, the operating knob 11 is formed with the orbiting groove 41, and the screw 42 screwed from the outer surface of the bearing 40 is engaged with the orbiting groove 41 to form the operating knob 1.
1 is rotatably supported. Further, the spring 17 is incorporated in the bearing 40, one end of which is hooked on the operating knob 11, and the other end of which is hooked on the groove 43 provided at the bottom of the bearing 40. As a result, the lock plug 16 fixed to the shaft end of the second shaft 5 is rotationally biased toward the lock posture. Other configurations are the same as those of the first embodiment.
Configure the same as. In this case, the lock bar 15 expands and contracts with respect to the lock plug 16.

(Embodiment 3) FIG. 8 shows an embodiment in which the engagement structure between the lock plug 16 and the lock bar 15 is changed. There, a plurality of engaging portions 19 are formed on the front and rear edges of the lock bar 15 so as to project. Correspondingly, an engagement hole 30 having a fan-shaped cross section is provided inside the lock plug 16 with a recess 44 that allows the engaging portion 19 to enter and engage. In the locked state, the engaging portion 19
The protruding side walls 19b, 19b contact the inner side wall of the engagement hole 30 and prevent relative movement of the lock bar 15 and the lock plug 16. The other structure is similar to that of the first embodiment. Example 2
Similarly, the lock bar 15 may be configured to move with respect to the lock plug 16.

In addition to the above, the lock bar 15 does not have to be in the shape of a strip plate and can be formed in the shape of a rod having an arbitrary cross section. For example, as shown in FIGS. 9A and 9B, the lock bar 15 can be formed by a rod having a semicircular cross section, or the lock bar 15 can be formed by a rod having a keyhole cross section. As the spring 17, a leaf spring, a compression coil spring, or the like can be applied instead of using a torsion coil spring. As shown by reference numeral 45 in FIG. 6, a spring receiving frame which is inserted by the support shaft 7 is provided, and one end of the spring 17 can be hooked on the spring receiving frame. First shaft 4 and second shaft 5
Can be formed by a metal tube having a polygonal cross section or a non-circular cross section, or may be formed by a shape member having a C-shaped cross section or a 5-shaped cross section.

[Brief description of drawings]

FIG. 1 is a perspective view in which a main part of an opening degree adjuster is cut away.

FIG. 2 is a plan view showing a usage state of the opening degree adjuster.

3 is a cross-sectional view taken along the line AA in FIG.

FIG. 4 is a vertical sectional view showing a lock mechanism.

5 (a) and (b) are B in FIG. 4, respectively.
It is sectional drawing which follows the -B line and the CC line.

FIG. 6 is an exploded perspective view mainly showing a lock mechanism.

FIG. 7 is a cross-sectional view of an opening amount adjuster according to a second embodiment.

FIG. 8 is a cross-sectional view of the lock mechanism of the opening amount adjuster according to the third embodiment.

9 (a) and 9 (b) are sectional views showing modified examples of the lock bar.

[Explanation of sign]

4 1st axis 5 Second axis 6 check rod 7 spindle 11 Operation knob 15 Rock bar 16 Lock stopper 17 spring 19 Engagement part 29 through hole 30 engagement holes

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-202666 (JP, A) Actual opening Sho 63-42771 (JP, U) Actual opening Sho 62-102782 (JP, U) Actual opening Sho 55- 179210 (JP, U) Actual opening 55-93793 (JP, U) Actual opening 52-103929 (JP, U) Actual opening Sho 53-64026 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) E05C 17/30

Claims (4)

(57) [Claims] 1. The first shaft 4 and the shaft 4 each made of a hollow pipe material.
Comprises a second shaft 5 preliminary, freely second shaft 5 is stretchable to the first axis 4
Having the restraining rod 6 inserted , the bracket 9 is rotatably supported on the first shaft 4 via the support shaft 7.
The bracket 10 is held by the second shaft 5 via the support shaft 8 so as to be rotatable.
And supported, and the lock mechanism is provided to prevent the expansion and contraction of the check rod 6 between both shafts 4 and 5, the locking mechanism, a plurality of engaging portions 19 along the long-side direction
The rod-shaped lock bar 15 is formed in a recess and is arranged inside the first shaft 4, and is fixed inside the insertion start end of the second shaft 5.
Is and a locking plug 16 for guiding the locking bar 15 in the longitudinal direction move freely in the end portion inner surface of the first shaft 4, the lock bar 15 to the lock position
A spring 17 for urging the shaft to rotate about the axis is arranged.
Cage, the locking plug 16 includes a through hole 29 to allow moving in the longitudinal direction of the lock bar 15 is provided with engaging hole 30 to allow rotation of the lock bar 15 is continuously, the lock bar 15 Is located in the through hole 29,
The lock plug 16 can move freely along with the second shaft 5.
Therefore, the lock lever 15 is rotatable by a fixed angle only when the engaging portion 19 of the lock bar 15 is located in the engaging hole 30.
I, the lock bar 1 5 is rotated by the biasing force of the spring 17 b
Tsu lock lever 15 to lock the plug 16 in the click state in abutment engagement axially two positions, the locking plug 16 is axially
Is prevented from moving to the bracket 9 , and the end of the first shaft 4 on the side of the bracket 9 is pivotally operated around the axis to bring the lock bar 15 into an unlocked state against the biasing force of the spring 17. An opening amount adjuster provided with an operation knob 11 for switching. 2. A first shaft 4 is provided between a window frame 1 and a window 3, and a bracket 9 on the side of the window frame 1 is provided with a first shaft 4 via a support shaft 7.
The second shaft 5 is movably supported by the bracket 10 on the side of the window 3 and is rotated by the support shaft 8.
The opening controller according to claim 1, which is movably supported . 3. In the locked state, the fitting portion is fitted in the engaging portion.
The locking projection 16 is provided on the lock plug 16 as set forth in claim 1.
Alternatively, the opening controller according to item 2 . 4. The support shaft 7 penetrates the first shaft 4 in the radial direction thereof.
The relief groove 22 for avoiding the operation interference with the support shaft 7 is formed by the lock bar.
15, one end of a torsion coil type spring 17 is hooked on the support shaft 7,
Opening amount regulator請<br/> Motomeko 1 or 2 or 3, wherein the other end of the spring 17 is hooked to the lock bar 15.