JP3503079B2 - 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 housing, a window, and the like, and an opening amount adjuster for holding the window or the like at an arbitrary open position, and in particular, a pair of rod-like rods in which a restraining rod is extendable 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. The applicant of the present application has previously proposed an opening amount adjuster in which a lock mechanism is constituted by a screw shaft and a half nut meshing with the screw shaft, and the expansion / contraction of a check rod is locked and fixed at an arbitrary open position (Japanese Patent Laid-Open No. 5-20).
2666).

[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. Another object of the present invention is to provide an opening amount adjuster capable of locking the restraining rod so that it cannot be expanded and contracted at an arbitrary open position and capable of performing the opening amount adjustment steplessly.

[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 includes a lock bar 15 having a non-circular cross section in which male threads 19 having a thread shape are formed along a side edge, and a female tooth 30 which is inserted into the lock bar 15 and engages with the male tooth 19 on the inner surface. A cylindrical lock ring 16 formed with the lock bar 16 and a spring 17 for biasing one of the lock bar 15 and the lock ring 16 to rotate around the axis toward the lock posture. A through groove 29 that allows relative movement of the lock bar 15 in the longitudinal direction and the female tooth 30 are provided adjacent to each other in the circumferential direction on the inner surface of the lock ring 16. The lock bar 15 is attached to either one of the first shaft 4 and the second shaft 5, and the lock ring 16 is attached to the other, so that the lock bar 15 and the lock ring 16 are relatively rotatable. 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 male teeth 19 are continuously formed along the side edge of the lock bar 15. A strip plate-shaped lock bar 15 is arranged inside the first shaft 4, and a lock ring 16 is fixed inside the insertion start end of the second shaft 5. One end of the first shaft 4 is rotatably supported by the fixed bracket 9 via a support shaft 7. A torsion coil type spring 17 and an operating knob 11 are incorporated in the shaft end of the first shaft 4.

[0007]

The lock ring 16 has a through groove 29 and a female tooth 30.
And the lock bar 15 is in the through groove 29, the lock ring 16 and the lock bar 15 can freely move relative to each other. However, when either the lock ring 16 or the lock bar 15 is rotationally operated by the spring 17, the male teeth 19 and the female teeth 30 are engaged with each other, so that both 15 and 16 cannot move relative to each other. That is, the first shaft 4 and the second shaft 5 are locked and fixed so that they cannot be expanded and contracted. The lock bar 15 and the lock ring 16 are respectively composed of the first shaft 4 and the second shaft 4 which are hollow bodies.
Since the operation knob 11 is incorporated inside the shaft 5 and the operation knob 11 is provided at the shaft end of the restraining rod 6, it is possible to prevent the lock mechanism from largely protruding to the outer surface of the restraining rod 6. The lock mechanism is the operation knob 1
The lock cannot be unlocked unless 1 is rotated around the axis against the spring 17 by a predetermined angle. In other words, it is not possible to switch to the unlocked state by simply bringing another object into contact with the operation knob 11, and the locked state can be maintained. According to the lock bar 15 in which the male teeth 19 are continuously formed, the opening amount can be adjusted substantially steplessly with the number of steps corresponding to the number of formed male teeth 19. When applied to the window 3, the operation knob 1 is attached to the shaft end of the first shaft 4 and the second shaft 5.
The shaft 4 on which 1 is provided is attached to the window frame 1 so that the operation knob 11 can be operated at hand.

[0008]

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 ring 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 unlocking the lock control knob 11 of the restraining rod 6. Can be placed at the shaft end. 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 open 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, the opening degree adjuster can be safely operated. Since the lock knob is unlocked by rotating the operation knob 11 about the axis, even if the operation knob 11 is accidentally contacted with the operation knob 11, the operation knob 11 is rotated by the force. This can prevent the lock mechanism from being inadvertently unlocked as compared with the push-button or pull-button operation knob. In the lock mechanism in which the threaded male teeth 19 are continuously formed along the side edge of the lock bar 15, the lock position can be changed in multiple steps with small steps, so that the window or the like can be held and fixed at any open position, and substantially. The opening amount can be adjusted steplessly. For example, when performing ventilation with the window 3 almost closed under strong wind, the opening amount is finely adjusted according to the strength of the wind within a small window opening amount to optimize the amount of air blown into the room. it can.

[0010]

【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 an arbitrary open position.
The opening amount adjuster is composed of a check rod 6 composed of a first shaft 4 and a second shaft 5 which are telescopically inserted, and a support shaft 7 at both ends of the check rod 6.
Brackets 9 and 10 for attaching to the window frame 1 and the window 3 via 8, a lock mechanism incorporated inside the check rod 6, an operation knob 11 for unlocking, and the like.

The first shaft 4 and the second shaft 5 are made 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 comprises a lock bar 15 made of a rod-shaped body and a cylindrical lock ring 1.
6 and a spring 17 for urging the lock bar 15 to rotate toward the locked posture.

The lock bar 15 is formed by punching out a metal plate material such as a stainless steel plate or a steel plate into a band plate shape, and continuously forming threaded male teeth 19 along the front and rear edges thereof, and at both ends in the longitudinal direction. The mounting parts 20 and 21 are provided. Rock bar 15
Is accommodated in the first shaft 4 and intersects the support shaft 7. Therefore, a portion intersecting with the support shaft 7 is formed wider than the other, 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. As shown in FIG. 3, the mounting portion 21 of the lock bar 15 on the second shaft 5 side
A slide ring 23 and a backup metal ring 24 are inserted into and fitted to the above, and these are fixed by screws 25.
The slide ring 23 is made 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 center position of the end of the lock bar 15 coincides with the shaft center. The slide ring 23 also functions as a stopper that defines the extension limit of the restraining rod 6. An end cap 26 that slides and guides the second shaft 5 is fixed to the end of the first shaft 4. This end cap 26 is also a slide ring 23
It is made of the same material as.

4 to 6, the lock ring 1 is shown.
6 is a shaft portion 16a made of a metal such as stainless steel
And a flange 16b are integrally formed to be a machined product, and the shaft portion 16a is connected to the second shaft 5 via the slide ring 31.
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 31 is made 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. On the inner surface of the lock ring 16, a through groove 29 and a thread-shaped female tooth 30 are provided so as to be adjacent to each other in the circumferential direction. The through groove 29 is formed in a fan-shaped cross section, and as shown by an imaginary line in FIG. 5, in a state where the lock bar 15 is located in the through groove 29, the lock ring 16 accompanies the second shaft 5 to freely move. You can move to. The female teeth 30 are formed at two locations on the inner surface of the lock ring 16 so as to be opposed to each other so as to project radially inward from the through groove 29. In the locked state, the male teeth 19 of the lock bar 15 mesh and engage with the female teeth 30 of the lock ring 16 to prevent the lock ring 16 from moving in the axial direction.

The spring 17 is a torsion coil type spring, and has hooking arms 32 and 33 at the ends of each spring as shown in FIG. The entire spring 17 is housed in the end cap 34 fixed to the first shaft portion 4 with the coil portion of the spring 17 fitted onto the mounting portion 20 of the lock bar 15, and the hook-shaped one latch arm 32 is attached. It is hooked on the support shaft 7 and the other inverted U-shaped hooking arm 33 is hooked on the mounting portion 20 of the lock bar 15. As a result, the lock bar 15 is urged to rotate in the counterclockwise direction in the sectional state of FIG. 5, and always receives a force in a direction for maintaining the locked state. The mounting portion 20 has an end cap 34.
Further protruding from the operation knob 11
Is externally fitted, and the operation knob 11 and the mounting portion 20 are fastened and fixed by the screw shaft 35 shown in FIG. 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 the opening controller is used, the operating 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,
The window 3 is fixed at an opening angle of about 45 °. In this state, when the operation knob 11 is rotated around the axis against the spring 17, the entire lock bar 15 is rotated around the axis, and the lock bar 15 is unlocked as shown by an imaginary line in FIG. The check rod 6 can be expanded and contracted, and the window 3 can be opened or closed. After opening and closing the window 3,
When the hand is released from the operation knob 11, the lock bar 15 is biased by the spring 17 and tilts, and the male teeth 19 thereof come into contact with the end face on which the female teeth 30 are formed. Then, at the same time when the crests and the troughs coincide, the male teeth 19 and the female teeth 30 engage with each other and automatically engage in lock.

[0017]

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 as long as it has a non-circular cross section. For example, ten-shaped or rod cross-section shown in FIG. 7 (a), 7
It can be formed by a rod having a cross section of a keyhole shown in (b) or a rod having a triangular cross section shown in FIG. 7 (c). As shown in FIG. 8 , if the male teeth 19 are formed at regular intervals, the restraining rod 6 can be locked so that it cannot expand and contract only at the position where the male teeth 19 are formed. The male teeth 19 can be formed only on one side of the lock bar 15. The male teeth 19 and the female teeth 30 can be formed in a round screw shape, a trapezoidal screw shape, or a rack tooth shape in addition to the triangular screw shape. Any shape that is continuous may be used. As the spring 17, a leaf spring, a compression coil spring, or the like can be applied instead of using a torsion coil spring. The first shaft 4 and the second shaft 5 can be formed of a metal tube having a polygonal cross section or a non-circular cross section, and may be formed of a cross-section C-shaped or U-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 is a sectional view taken along line BB in FIG.

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

FIG. 7 is a cross-sectional view showing a modified example of the lock bar .

FIG. 8 is a plan view showing another modification of the lock bar .

[Explanation of symbols]

4 1st axis 5 Second axis 6 check rod 7 spindle 11 Operation knob 15 Rock bar 16 lock ring 17 spring 19 male teeth 29 through groove 30 female teeth

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E05C 17/30

Claims (3)

(57) [Claims] 1. A first shaft formed of a hollow pipe material, respectively.
4 and a second shaft 5, and has a check rod 6 in which the second shaft 5 is telescopically inserted in the first shaft 4, and a lock for preventing the check rod 6 from expanding and contracting between both shafts 4 and 5. A mechanism is provided , and brackets 9.1 are attached to both ends of the restraining rod 6 via support shafts 7.8.
0 is rotatably supported, and the lock mechanism has a male tooth 19 in the shape of a screw thread formed along the side edge.
And is arranged inside the first shaft 4 so as to be tiltable around the axis.
The lock bar 15 having a non-circular cross section placed and the insertion of the second shaft 5
Fitted is fixed to the inside of the starting end and a cylindrical locking ring 16 Mesuha 30 that engages the Oha 19 on the inner surface is formed
Wherein the inner surface of the lock ring 16, a through groove 29 to allow moving in the longitudinal direction of the lock bar 15 is provided with the Mesuha 30 adjacent in the circumferential direction, an end portion of the first shaft 4 On the inner surface of the lock lever 15, the male tooth 19
Rotate around the axis toward the locked position that engages the female teeth 30.
When the spring 17 for urging the movement is arranged and the lock bar 15 is located in the through hole 29,
The lock ring 16 can move freely along with the second shaft 5.
And the male tooth 19 of the lock bar 15 is the female tooth 3 of the lock ring 16.
In the locked state where it is meshed with 0,
The cling 16 is prevented from moving in the axial direction, and is rotated around the axial center at the end of the first shaft 4 on the side of the bracket 9 so that the lock bar 15 resists the biasing force of the spring 17. The opening amount adjuster provided with the operation knob 11 for switching to the unlocked state. 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. A strip-shaped lock bar (1) inside the first shaft (4).
5, the lock ring 16 is fixed inside the insertion start end of the second shaft 5, and one end of the first shaft 4 is rotatably supported by the bracket 9 on the fixed side via the support shaft 7. 3. The opening amount adjusting device according to claim 1, wherein a torsion coil type spring 17 and an operating knob 11 are incorporated in the shaft end of the first shaft 4.