JP7511969B2 - Lockable Knob Opener - Google Patents

Description

The present invention relates to a lock knob opener, which is a device for turning and unlocking a lock knob such as a thumb turn that is installed on the interior side of a door cylinder lock, etc.

Currently, cylinder locks are used as locks for doors in apartment buildings and other buildings to prevent lock-picking.
A thumb turn is provided on the indoor side of the cylinder lock so that the lock can be opened and closed from the indoor side.
This thumb turn can be held between the thumb and index finger and turned to unlock the door.

However, if a resident leaves the house after going out and forgets the key to unlock the cylinder lock somewhere, or if the key is lost, or even if the key is stolen, they may find themselves unable to open the lock on their own room when they return home.
In such cases, you will need to contact a professional locksmith to unlock the cylinder lock.
In the case of cylinder locks, it is very difficult to unlock them from the keyhole, so the current method is to insert a tool through the peephole in the door, called a door scope, and turn the thumb turn located on the inside of the door to unlock it.

The invention described in the following patent document is a "locking knob opener" invented by the present inventors, which unlocks the door by inserting a tool into the room through a peephole in the door and turning the thumb turn.
The challenge was to properly unlock the thumb turn, which is equipped with a push button that serves as the locking means.

This locking knob opener is composed of a roughly U-shaped frame portion, a wire material inserted through the inside of the frame portion, an operating portion provided on the base end side of the wire material, and a thumb turn clamping portion provided on the tip of the wire material and the frame portion.
The central portion of the frame is extendable in its longitudinal direction.
The thumb turn clamping portion is formed from two spring plates.
When the operating portion is rotated, the thumb turn clamping portion also rotates around the wire material.
The thumb turn clamping portion at the tip can be inserted into the inside of the door through a hole in the door scope, and the thumb turn clamping portion can clamp and press the push buttons provided on both sides of the thumb turn.
The thumb turn clamping portion is formed so as to be freely detachable, and a grip portion is detachably provided on the base end side of the base end frame portion.

JP 2010-236355 A

The tip of the conventional locking knob opener is inserted through a peephole provided in the door.
However, due to security concerns, doors in apartment buildings and other buildings nowadays do not have this peephole.
In the case of such a door that does not have a peephole, it is not possible to open the door using the above-mentioned conventional opener.

Therefore, the first objective of this invention is to focus on the door post installed on the door and to propose a type of opener that can be inserted into the inside of the door through this door post and rotate the thumb turn of the lock.

Naturally, the opening and closing lid of the post located on the inside of the door post is opened before inserting the opener, and since the tool for opening it already exists, there is no problem in using the opener of the present invention.

Furthermore, the present invention also addresses various other issues, such as the need to properly adapt to the size of a door post installed on a door, i.e., the need to be able to change the size of each part of the frame.
Other objectives of the present invention include adding various functions required for this type of opener and improving its ease of use.

In order to solve the above problems, the first invention of the present invention is a locking knob opener that is made up of a frame part with a curved corner and a generally U-shaped frame part, a flexible wire material that passes through the inside of the frame part, an operating part provided on the base end side of the wire material, and a thumb turn clamping part provided on the tip of the wire material and the frame part, and the frame part is made up of a base end frame part, a central frame part, and a tip end frame part, and the base end frame part is longer than the tip end frame part, and when the operating part is rotated around the wire material, the thumb turn clamping part at the tip also rotates around the wire material. In this locking knob opener, a U-shaped frame part that curves downward into a U-shape is provided between the base end frame part and the central frame part, and the thumb turn clamping part at the tip of the frame part can be inserted into the inside of the door from the entrance part of the door post of the door, and the thumb turn clamping part can clamp while pressing down the push buttons provided on both sides of the thumb turn of the lock part.

The second aspect of the present invention is a locking knob opener according to the first aspect of the present invention, characterized in that the longitudinal length of the central frame section is formed to be freely expandable and contractible, and that the structure is such that the longitudinal length of the central frame section does not rotate in the circumferential direction, and the base end of the base end frame section and the tip end of the tip end frame section are positioned in the same direction.

The third aspect of the present invention is a lockable knob opener according to the first or second invention, characterized in that the horizontal spacing and vertical length of the U-shape of the U-shaped frame are changeable.

The fourth aspect of the present invention is a locking knob opener according to the third aspect of the present invention, characterized in that the lower curved portion of the U-shaped frame portion is formed from a flexible tubular body, a guide frame is provided to guide the U-shaped frame portion, and the guide frame is formed from a pair of symmetrical, approximately L-shaped frame members, the vertical frame of one of the frame members is slidable in the longitudinal direction with one upper vertical frame of the U-shaped frame portion, and the vertical frame of the other frame member is slidable in the longitudinal direction with the other upper vertical frame of the U-shaped frame portion, and the horizontal frames of the pair of approximately L-shaped frame members are slidable in the longitudinal direction with each other to change the longitudinal length, thereby changing the lateral spacing and vertical length of the U-shaped frame portion.

A fifth aspect of the present invention is the above-mentioned first to fourth aspects, wherein a base end of the tip side frame portion is rotatably connected to a tip end of the central frame portion,
In the vicinity of the connection portion between the tip side frame portion and the central frame portion, the wire material passing through the inside can emerge from the inside of the tip side frame portion and the central frame portion to the outside,
As a result, the tip side frame portion is bent at an approximately right angle, and the frame portion is formed into an approximately U-shape, resulting in a lock-equipped knob opener.

The sixth aspect of the present invention is a locking knob opener, characterized in that in each of the above inventions, the thumb turn clamping portion is made of two spring plates, and multiple elastic wire-like guide members are provided on both sides of the gap between these two spring plates.

The seventh aspect of the present invention is a locking knob opener, characterized in that the thumb turn clamping portion is detachably attached to the tip of the frame portion in each of the above inventions.

The eighth aspect of the present invention is a locking knob opener, characterized in that in each of the above inventions, a grip part for holding the frame part is detachably provided on the base end side of the base end frame part.

In the first embodiment of the present invention, the device comprises a frame portion having a generally U-shape with curved corners, a flexible wire member that passes through the inside of the frame portion, an operating portion provided on the base end side of the wire member, and a thumb turn clamping portion provided on the tip of the wire member and the frame portion, the frame portion comprises a base end side frame portion, a central frame portion, and a tip end side frame portion, the base end side frame portion is longer than the tip end side frame portion, and when the operating portion is rotated around the wire member, the thumb turn clamping portion at the tip In a locking knob opener that rotates around a wire material, a U-shaped frame portion that curves downward into a U-shape is provided between the base end frame portion and the central frame portion, so that the thumb turn clamping portion at the tip of the frame portion can be inserted into the inside of the door from the entrance portion of the door post and this thumb turn clamping portion can press and clamp the push buttons on both sides of the thumb turn of the lock portion, and the thumb turn can be rotated to unlock the door from the inside of the door.
In other words, the U-shaped frame portion of the frame can be properly inserted through the open portion of the opening and closing lid portion that has been opened from inside the door post, and the central frame portion that follows continues upward.The thumb turn clamping portion at the tip of the tip frame portion that is bent toward the tip can be clamped by the thumb turn of the lock and rotated to unlock the door.
In the present invention, it is possible to unlock even a knob that does not have a push button as a locking means on the thumb turn.

In the present invention having the above configuration, the unlocking procedure is as follows.
First, the opening and closing lid of the door post is opened in advance from the entrance portion of the door post of the door using a tool.
The opener according to the present invention is inserted into the room from its tip end into the entrance portion of the door post.
Since the opening and closing lid of the door post is open, the open portion of the opening and closing lid is inserted from inside the door post, that is, the thumb turn clamping portion at the tip, the tip frame portion, the central frame portion, and the U-shaped frame portion are inserted in that order.
At this time, due to the shape of the U-shaped frame portion, the opener according to the present invention is inserted from the entrance portion of the door post in a manner that properly matches the structure of the opening portion of the opening/closing lid portion.
Grasp the base end frame portion and the operating portion and align the thumb turn clamping portion located at the tip of the opener to the position of the thumb turn on the door.
The entire opener is pulled toward the front (front side) of the door, and the thumb turn is clamped by the thumb turn clamping portion at the tip.
At this time, even if the thumb turn is equipped with a push button as a locking means, the lock is released by pushing the push button inward.
Thereafter, by rotating the operating portion at the base end, the thumb turn clamping portion at the tip end is also rotated via the wire material connecting the two, and the thumb turn is rotated.
This unlocks the thumb turn.

In the second aspect of the present invention, the frame portion is made more specific, that is, the longitudinal length of the central frame portion is formed to be freely expandable and contractible and is structured so as not to rotate circumferentially, and it is specified that the base end portion of the base end frame portion and the tip end portion of the tip end frame portion are positioned in the same direction.
This makes it easy to accommodate door types with different distances from the entrance part of the door post to the position of the lock part, and even if the length of the central frame part is changed, the ends of the base end frame part and the tip end frame part face in the same direction, and the orientation of the thumb turn clamping part located at the tip part matches the direction of the base end part of the base end frame part, making it convenient when clamping the thumb turn clamping part to the thumb turn.

In the third aspect of the present invention, the horizontal spacing and vertical length of the U-shaped frame are changeable, allowing it to be adapted appropriately to the size of the door post installed on the door.

In the fourth aspect of the present invention, the specific structure for making it possible to change the horizontal interval and vertical length of the U-shaped frame portions in the third aspect of the present invention is limited.
That is, the downward curved portion of the U-shaped frame portion is formed from a flexible tubular body, a guide frame is provided to guide this U-shaped frame portion, and this guide frame is formed from a pair of approximately L-shaped frame members that are symmetrical on the left and right, the vertical frame of one of the frame members is freely slidable in the longitudinal direction with one upper vertical frame of the U-shaped frame portion, and the vertical frame of the other frame member is freely slidable with the other upper vertical frame of the U-shaped frame portion, and the horizontal frames of the pair of approximately L-shaped frame members are freely slidable in the longitudinal direction so that the longitudinal length can be changed, thereby making it possible to change the lateral spacing and vertical length of the U-shaped frame portion.

In the fifth aspect of the present invention, the base end of the tip frame portion is rotatably connected to the tip portion of the central frame portion, and the tip frame portion is bent at approximately a right angle to form the frame portion into an approximately C-shape. After the tip frame portion is inserted inside the door, it can be bent at approximately a right angle, so that when it is inserted through the entrance portion of the door post, it can be easily inserted with the tip frame portion and the central frame portion in an approximately straight line.
In this case, the wire material inserted inside must be able to emerge from the inside to the outside at the connecting part between the tip frame part and the central frame part. To achieve this, the connecting part between the tip frame part and the central frame part does not need to be tubular, but rather needs to have long holes on both sides so that the wire material can emerge to the outside.

In the sixth aspect of the present invention, the thumb turn clamping portion provided at the tip of the opener is formed from two spring plates, so that the knob of the thumb turn can be clamped well by these two spring plates.
Furthermore, by providing a plurality of wire-like guide members on both sides of the gap between the two spring plates, these guide members fit properly on both sides of the thumb turn, allowing the two spring plates to be properly guided and clamped onto the flat surfaces on both sides of the thumb turn.

In the seventh aspect of the present invention, the thumb turn clamping portion at the tip of the opener is removable and replaceable, so when it wears out, it can be replaced with a thumb turn clamping portion made of spring plates with different spacing.

In the eighth aspect of the present invention, a grip portion for holding the frame portion is detachably provided on the base end side of the base end frame portion, so that the opener can be inserted into the entrance portion of the door post with the frame portion removed, and after insertion the grip portion can be attached in an appropriate position and operated, eliminating the need for the grip portion to get in the way.
Furthermore, by providing attachment portions at two or more locations, it is possible to change the attachment position of the grip portion.

1 is an overall explanatory diagram of a first embodiment of a locking knob opener according to the present invention; FIG. 11 is an overall explanatory diagram of a second embodiment of a locking knob opener according to the present invention. FIG. 3 is an enlarged perspective explanatory view of a U-shaped frame portion of the opener according to the second embodiment, showing a state rotated approximately 90 degrees clockwise from the state shown in FIGS. 1 and 2. 13 is an explanatory diagram of a state in which a substantially L-shaped frame member is separated from a U-shaped frame portion in the second embodiment. FIG. 13 is an enlarged explanatory view of a base end side of the U-shaped frame portion according to the second embodiment. FIG. 13 is an enlarged explanatory view of a tip side of the U-shaped frame portion according to the second embodiment. FIG. 13 is an explanatory diagram illustrating a portion of a tip side frame portion of an opener according to a third embodiment of the present invention. FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is an overall explanatory view of a first embodiment of a locking knob opener according to the present invention.
The locking knob opener of the present invention is composed of a frame portion, a flexible wire material 15 that passes through the inside of the frame portion, an operating portion 16 provided on the base end side of the wire material 15, a thumb turn clamping portion 20 that is detachably attached to the tip end of the wire material 15, and a grip portion 25 that is detachably fixed to the base end side of the frame portion.

The frame section is made up of a base end frame section 11 that extends horizontally from the base end, a U-shaped frame section 12 that follows, a central frame section 13 that extends upward from the U-shaped frame section 12, and a distal frame section 14 that bends from the tip of the central frame section 13 towards the base end frame section 11.

The base end frame portion 11 and the tip end frame portion 14 are disposed approximately parallel to each other, and the central frame portion 12 is disposed approximately perpendicular to the base end frame portion 11 and the tip end frame portion 14 .
The connection parts between the base end frame part 11 and the U-shaped frame part 12, and the connection parts between the central frame part 13 and the tip end frame part 14 are curved so that the wire material 15 passing through the inside can be smoothly inserted in the longitudinal direction and can slide longitudinally inside.

In other words, the frame portion has a shape in which a U-shaped frame 12 is interposed between a base end frame portion 11 and a central frame portion 13 of a frame portion that is generally U-shaped when viewed from the side, and the corners of the frame portion are curved.

Of the above frame parts, the central frame part 13 uses a metallic square tube, and the other parts use metallic circular tubes.
The central frame portion 13 has a structure in which the upper tube body 13a of the two upper and lower square tubes can be fitted inside the lower tube body 13b so that its longitudinal length can be expanded or contracted at its midpoint.

The central frame 13 is made of a square tube so that the upper tube 13a and the lower tube 13b do not rotate when they expand and contract vertically. This ensures that the base end frame 11 and the tip end frame 14 face in the same direction.

The operating part 16 is fixed to the base end of the wire material 15 that passes through the entire interior of the frame part, and as shown in the figure, has a tapered cylindrical shape. When it is grasped and rotated, the thumb turn clamping part 20 attached to the tip of the wire material 15 also rotates.

At the same time, by pulling the operating part 16 toward the front in the longitudinal direction of the wire material 15, the central part of the central frame part 13 contracts, and conversely, by pushing it forward in the longitudinal direction, the central part of the central frame part 13 expands.

The thumb turn clamping portion 20 has two spring plates 21, 21 fixed to its tip, and on both sides of the gap between these spring plates 21, 21, there are multiple wire members (not shown) that can clamp the side portions on both sides where the thumb turn push button is not provided.

A grip portion 25 is detachably fixed to the upper portion of the base end side of the base end frame portion 11 .
The grip portion 25 has a generally screwdriver shape as a whole, and has a rod-shaped body 26 at the tip end of which a nut member 25n is provided.
By rotating the grip portion 25m of the grip portion 25 counterclockwise, it can be detached from the base end frame portion 11 and screwed into the lower mounting portion 42 for mounting.

When using the opener, the opener is opened in advance with a tool on the inside of the door post P, and the opener is inserted into the entrance Q of the door post P from its tip, i.e., from the side of the thumb turn clamping portion 20.

The opening and closing lid of the door post P is opened in advance, so the tip of the opener can be inserted through the open part W of the opening and closing lid and into the inside of the door.

Grasp the operating part 16 and extend or shorten the length of the intermediate frame part 13 as appropriate to match the thumb turn clamping part 20 located at the tip of the opener to the position of the thumb turn on the door.

The entire opener is pulled toward the front (front side) of the door, and the thumb turn is clamped by the spring plates 21, 21 of the thumb turn clamping portion 20 at the tip.

At this time, even if the thumb turn is equipped with a push button as a locking means, the two spring plates 21, 21 push the push button inward to release the lock.

Then, by rotating the operating part 16, the thumb turn clamping part 20 at the tip is also rotated via the wire material 15 that connects the two, causing the thumb turn to rotate approximately 90 degrees and unlocking.

When using the opener of the present invention to open a lock, it is also possible to attach a small camera to the tip of the frame and operate the lock while viewing the image in front of you.

FIG. 2 is an overall explanatory view of a second embodiment of a locking knob opener according to the present invention.
The opener according to the second embodiment differs from the opener according to the first embodiment in the configuration of the U-shaped frame portion 12 thereof, but is otherwise the same as the first embodiment.

In other words, the width and length of the U-shaped frame portion 12 of the opener according to the second embodiment can be freely changed as shown by the arrows Y and T, respectively.

The U-shaped frame portion 12 will be described in detail later with reference to FIG. 3 and thereafter, but a flexible tubular body is used so that the lower curved portion 12u of the U-shaped frame portion 12 can be freely deformed.
For example, a coil spring wound in a spiral shape with no gaps or other flexible tubes can be used.

The curved portion 12s that connects to the base end frame portion 11 of the U-shaped frame portion 12 is made of a metal circular tube, and a metal square tube 12v is connected to the tip of this metal circular tube, and a metal square tube that can be inserted into the metal square tube 12v is connected to the flexible curved portion 12u.

Therefore, by inserting the metal square tube connected to this curved portion 12u into the square tube 12v of the U-shaped frame portion 12, the length of the curved portion 12u can be adjusted.

On the other hand, the other end of the curved portion 12u is connected to a metal square tube 12w, and the tip of this square tube 12w is connected to the metal square tube of the central frame portion 13.

Furthermore, since the curved portion 12u uses a flexible tubular body, a frame member is required to maintain the U-shaped frame portion in a U-shape.
The frame members 22, 23 are made of a pair of generally L-shaped metal frames that are symmetrical on the left and right.

These frame members 22 and 23 will be described in detail using later figures, but in the figure, the frame member 22 on the left side has a roughly L-shape, and the frame member 23 on the right side has an inverted L-shape that is symmetrical to the frame member 22.

The vertical frames 22 t , 23 t of these frame members 22 , 23 can slide up and down along the vertical frames of the U-shaped frame portion 12 .
On the other hand, the horizontal frames 22y, 23y of the frame members 22, 23 are configured so that one horizontal frame 22y fits inside the other horizontal frame 23y, and the horizontal length can be adjusted.

FIG. 3 is an enlarged perspective explanatory view of a U-shaped frame portion of the opener according to the second embodiment, rotated approximately 90 degrees clockwise from the state shown in FIGS.
FIG. 4 is an explanatory diagram of a state in which the substantially L-shaped frame member is separated from the U-shaped frame portion of the second embodiment.
FIG. 5 is an enlarged explanatory view of the base end side of the U-shaped frame portion according to the second embodiment.
FIG. 6 is an enlarged explanatory view of the tip side of the U-shaped frame part according to the second embodiment.

These four figures provide a good view of the details of the U-shaped frame portion 12 of the opener according to the second embodiment.
First, the U-shaped frame portion 12 is connected at its base end to the base end side frame portion 11 via a curved portion 12s (FIGS. 3 and 4).

A square tube 12v is continuous with the tip side of this curved portion 12s.
An insertion portion 25 is provided at the upper end of the square pipe 12v. The vertical frame 22t of the substantially L-shaped frame member 22 is inserted into the insertion portion 25.

A square pipe 12t is connected to the base end of the curved portion 12u of the U-shaped frame portion 12, and this square pipe 12t is fitted inside the square pipe 12v and can freely protrude and retract.
The former square tube 12t is fitted into the latter square tube 12v, and the length in the longitudinal direction is adjusted and then the setscrew 32 is tightened to fix the tube in place.

An insertion portion 26 is also provided at the upper portion of the square pipe 12t.
As a result, after the square pipe 12t is inserted and fixed inside the square pipe 12v, the vertical frame 22t of the L-shaped frame member 22 can be inserted into the insertion portions 26 and 25 and fixed with the set screws 33. This fixed state is shown in FIG.

On the tip side of the U-shaped frame portion 12, i.e., on the side of the central frame portion 13, a square tube 12w is connected to the tip side of the curved portion 12u, and this square tube 12w is continuous with the central frame portion 13, and an insertion portion 27 is provided at the upper part of this square tube 12w.
The vertical frame 23t of the other L-shaped frame member 23 is fitted into this insertion portion 27 and is slidable.
That is, the vertical frame 23 t of the frame member 23 can be inserted into the insertion portion 27 and fixed with the set screw 34 .

The pair of approximately L-shaped frame members 22, 23 are symmetrical, with one horizontal frame 22y being able to be fitted into the other horizontal frame 23y, and the longitudinal length of the frame being able to be freely changed.
This allows the horizontal frames 22y, 23y to be appropriately extended or shortened and fixed with the set screws 35 to adjust and fix the desired length.

FIG. 5 shows an enlarged view of the upper portion of the U-shaped frame portion 12, from which the base end portion of the curved portion 12u can be clearly seen.
That is, a square tube 12t is provided continuously with the upper end of the curved portion 12u, and this square tube 12t is formed so as to be able to fit inside the square tube 12v at the top of the U-shaped frame portion 12 and move in and out freely, so that its longitudinal length can be changed, and after the longitudinal length has been changed, it can be fixed with a locking screw located on the back side of the drawing.

To adjust the length of the vertical frame 22t of the L-shaped frame member 22 so that it matches the vertical length (horizontal length in Figure 4) of the U-shaped frame portion 12, the vertical frame 22t can be slid inside the insertion portions 26, 25 and then fixed with a set screw 32.

Similarly, as shown in FIG. 6, on the side of the central frame portion 13 of the curved portion 12u of the U-shaped frame portion 12, the vertical frame 23t of the other L-shaped frame member 23 can be inserted into the insertion portion 27 provided on the upper square tube 12w of the U-shaped frame portion 12 and fixed with a set screw 34.

As a result, the U-shaped frame portion 12 is able to maintain its shape properly by the symmetrical L-shaped frame members 22 and 23, and is able to maintain the shape shown in Figure 3.

FIG. 7 is an explanatory diagram illustrating a portion of a tip side frame of an opener according to a third embodiment of the present invention.
As can be seen from this figure, the opener according to the third embodiment has a tip side frame portion 14 formed at the tip of a central frame portion 13 so as to be freely rotatable.
The other configurations are the same as those of the second embodiment.

In the third embodiment, the base end of the tip side frame portion 14 is axially attached to the tip portion 13f of the central frame portion 13 so as to be rotatable within a range of approximately right angles.
Since wire material 15 is inserted inside these tip side frame portion 14 and central frame portion 13, in order to enable the tip side frame portion 14 and the central frame portion 13 to be bent at approximately right angles, the structure must be designed so that the wire material 15 can be exposed to the outside at the connection portion between them.

For this purpose, the cross section of the tip side frame portion 14 is made substantially U-shaped, and the central frame portion 13 has long holes on both sides thereof.
That is, in FIG. 7, an elongated hole portion is provided on the right side of the base end portion of the distal frame portion 14, while the distal portion of the central frame portion 13 must have openings on both the top and bottom faces in FIG.

This allows the wire material 15 passing through the interior to appear outside the central frame portion 13 and the tip side frame portion 14.
In Figure 7, the filament 15 is shown as a solid line emerging above the central frame portion 13, but there are also cases where it emerges inside the corner between the tip frame portion 14 and the central frame portion 13, as shown by the dotted line.

To rotate the tip frame section 14 at a substantially right angle, the tip of a thin wire 40 is connected to the middle section of the tip frame section 14, and the wire 40 is passed through several guide eyelets provided on the central frame section 13 and the U-shaped frame section 12 as appropriate, and is arranged close to the operating section of the base frame section 11 at the hand.

With the above configuration, after the frame part is inserted inside the door from the entrance part of the door post, the base end part of the wire 40 is pulled towards the front, so that the tip side frame part 14 is bent about 90 degrees from the central frame part 13, and the tip thumb turn clamping part 20 is clamped by the thumb turn of the door lock and can be rotated.

The above three embodiments have been described, but in any of these forms, the wire material 15 that passes through the inside of the frame portion is formed from a flexible tubular body made of a thin steel wire wound in a spiral shape, and is flexible. When the operating portion 16 fixed to the base end side is rotated, a threaded rod fixed to the tip end of the wire material 15 is rotated, although this is not shown in the figure.
The wire material 15 may be a simple steel wire having flexibility.

In addition, because the threaded rod at the tip of the wire material 15 is screwed into a nut member provided at the tip of the tip side frame part 14, when the operating part 16 is moved forward in the longitudinal direction of the wire material 15, the middle part of the central frame part 13 is stretched.

A nut is provided at the base end of the thumb turn clamping part 20, and this nut is screwed into the threaded rod at the tip of the wire material 15 to connect and fix it. When replacing the thumb turn clamping part with a different type, this screw connection can be released and it can be easily separated and replaced.

The attachment position of the grip portion 25 can be changed.
The mounting parts 30, 40 are provided with male threads 31, 41, and in this embodiment, two are provided, one facing upward and one facing downward (FIGS. 1 and 2), and one of these can be selected to screw the nut member 25n at the tip of the grip part 25 into the male threads. In the drawings, the male threads 31 are screwed into the upward male threads, and are therefore hidden.
In the present invention, the extension direction of the rod-shaped body 26 on the tip side of the grip portion 25 coincides with the extension direction of the central frame portion 13. This allows the position of the tip of the tip side frame portion 14 to be indicated.

The thumb turn clamping portion 20 attached to the tip of the opener in each of the above embodiments is, as already mentioned, removably attached to the tip of the wire material, and has two spring plates 21, 21 at the tip and a nut portion on the base end side.

Although not shown in the figure, the guide members provided on both sides of the gap between the spring plates 21, 21 are made of flexible, tough steel wire and are provided to guide the spring plates 21, 21 so that they can properly clamp both sides on which the thumb turn push button is provided.

Although the embodiment of the present invention has been described above, the present invention can be embodied in various modified forms as described below.
The size, material, etc. of the frame portion according to the present invention can be freely set as appropriate.
The size, material, etc. of the frame member for maintaining the shape of the U-shaped frame portion can also be changed as appropriate.

The longitudinal length of the insertion portion for inserting the vertical frames of the pair of frame members can also be freely set.
The longitudinal length of the two insertion portions provided in the upper part on the base end side of the U-shaped frame portion is set to be short, and the longitudinal length of the insertion portion provided in the upper part on the tip side of the other portion is set to be long, but the latter insertion portion is set to be longer because there is only one of it.

The shape of the spring plate that clamps the thumb turn can also be freely chosen; in short, any shape is acceptable as long as it can clamp the flat surfaces on both sides of the thumb turn, and the material can also be freely selected as long as it is elastic.
In short, what is required is for the thumb turn to be clamped between two clamping bodies.

The telescopic structure of the central frame is also completely free. In the above embodiment, one tube end is configured to fit into the other tube end, but this central frame can also be made up of three frames, the two end frames and the central frame, so that they can fit into and slide on each other.

The wire material is not limited to that used in the above embodiment, and it is also possible to use a flexible thin steel wire.

The shape of the operating part can also be freely designed; in short, any shape is acceptable as long as it can rotate the operating part and simultaneously rotate the wire material.

The structure of the threaded rod at the tip of the wire material and the nut part of the thumb turn clamping part that screws into it is not limited to this, and any structure is acceptable as long as the ends of both can be connected and disconnected and can transmit rotational motion between them.

In the above embodiment, the grip portion is in the form of a screwdriver, but this form can also be freely changed in design, and in short, any form that can be held by hand will do.
It is also preferable that the rod-shaped portion of the grip is formed as long as possible.
This is because the thumb turn clamping portion is located on the extension line of this rod-shaped body, and this serves as a guide.
Furthermore, the grip portion can be attached to the lower or upper portion of the base end frame portion, or at any position in the lateral direction.
This is because a plurality of mounting portions for the grip portion may be provided in advance on the base end frame portion.

The above describes an embodiment of the present invention, but the present invention provides an opener that can be inserted through the entrance of a door post and can securely clamp the knob of a thumb turn equipped with a push button locking mechanism or a thumb turn without a push button, thereby reliably unlocking the thumb turn.

DESCRIPTION OF SYMBOLS 11 Base end frame portion 12 U-shaped frame portion 12s Curved portion 12u Curved portion 12v, 12w Square tube 13 Central frame portion 13a Upper tube body 13b Lower tube body 13f Tip portion 14 Tip side frame portion 15 Wire member 16 Operation portion 20 Thumb turn clamping portion 21 Spring plate 22, 23 Frame member 22t, 23t Vertical frame 22y, 23y Horizontal frame 25 Grip portion 25n Nut member 25m Grip portion 26 Rod-shaped body 30, 40 Mounting portion 41 Male thread portion P Door post Q Entrance portion W Opening portion

Claims (8)

A locking knob opener comprising a generally U-shaped frame portion with curved corners, a flexible wire material passing through the inside of the frame portion, an operating portion provided on the base end side of the wire material, and a thumb turn clamping portion provided on the tip of the wire material and the frame portion, said frame portion comprising a base end side frame portion, a central frame portion and a tip end side frame portion, said base end side frame portion being longer than said tip end side frame portion, and when said operating portion is rotated around the wire material, the thumb turn clamping portion at the tip also rotates around the wire material,
a U-shaped frame portion bent downward into a U-shape is provided between the base end frame portion and the central frame portion,
This allows the thumb turn clamping portion at the tip of the frame portion to be inserted into the inside of the door from the entrance portion of the door post, and the thumb turn clamping portion can be used to clamp while pressing down the push buttons on both sides of the thumb turn of the lock portion. This is a lock-equipped knob opener. The lock-equipped knob opener according to claim 1, characterized in that the longitudinal length of the central frame portion is formed to be freely expandable and contractible, and the structure is such that it does not rotate in the circumferential direction, and the base end of the base end frame portion and the tip end of the tip end frame portion are in the same directional positional relationship. The lockable knob opener according to claim 1 or 2, characterized in that the horizontal spacing and vertical length of the U-shaped frame are changeable. a downward curved portion of the U-shaped frame portion is formed from a flexible tubular body, a guide frame for guiding the U-shaped frame portion is provided, and the guide frame is formed from a pair of substantially L-shaped frame members that are symmetrical on the left and right;
The vertical frame of one of the frame members is slidable in the longitudinal direction relative to one upper vertical frame of the U-shaped frame portion, and the vertical frame of the other frame member is slidable in the longitudinal direction relative to the other upper vertical frame of the U-shaped frame portion, and the horizontal frames of the pair of approximately L-shaped frame members are slidable in the longitudinal direction relative to each other, so that the longitudinal lengths of the pair of approximately L-shaped frame members can be changed;
4. The lock-equipped knob opener according to claim 3, wherein the horizontal spacing and vertical length of the U-shaped frame portions can be changed. a base end portion of the distal end side frame portion is rotatably connected to a distal end portion of the central frame portion,
In the vicinity of the connection portion between the tip side frame portion and the central frame portion, the wire material passing through the inside can emerge from the inside of the tip side frame portion and the central frame portion to the outside,
5. The lock-equipped knob opener according to claim 1, wherein the tip frame portion is bent at a substantially right angle, so that the frame portion is formed into a substantially U-shape. The lock-equipped knob opener according to any one of claims 1 to 5, characterized in that the thumb turn clamping portion is made of two spring plates, and multiple elastic wire-like guide members are provided on both sides of the gap between these two spring plates. The locking knob opener according to any one of claims 1 to 6, characterized in that the thumb turn clamping portion is detachably provided at the tip of the frame portion. The locking knob opener according to any one of claims 1 to 7, characterized in that a grip part for holding the frame part is detachably provided on the base end side of the base end frame part.