JP7495132B2 - Square core, handle unit, handle mounting structure - Google Patents

Description

The present invention relates to a square core used to attach a handle, a handle unit equipped with said square core, and a handle attachment structure using said square core.

When attaching a handle such as a lever handle to the door body, a square core is used. The square core is inserted into the square hole of the lock case built into the door body, and the handle is fixed to the part that protrudes outward from the square hole.

The square hole of the lock case is designed to have a slight gap (clearance) between the hole and the square core so that the square core can be inserted smoothly. However, the gap between the hole and the square core can cause the square core to wobble inside the hole, and proposals for a solution to this problem are being sought.

Conventionally, known square cores that prevent rattling within a square hole include one in which two leaf springs are arranged between a pair of square shafts (Patent Document 1) and one in which a plate-shaped body is rotatably supported within a bottomed groove provided in the square core body (Patent Document 2).

The square core of Patent Document 1 is equipped with a pair of square shafts and two leaf springs arranged between the two square shafts. With this square core, when the tip of the set screw that fixes the lever handle presses the two folded pieces together, the pressure contact between the two folded pieces is pressed against the inner circumference of the square hole, preventing the square core from rattling.

The square core of Patent Document 2 comprises a square core body having a bottomed groove and a plate-like body that fits into the bottomed groove. With this square core, when one end of the plate-like body protruding from the bottomed groove is pushed in with a screw to rotate the plate-like body, the other end of the plate-like body is pressed against the inner circumference of the square hole, preventing the square core from rattling.

Japanese Patent Application Laid-Open No. 6-33641 JP 2016-211278 A

The square core of Patent Document 1 requires alignment of the axial hole of the plate-shaped body with the axial hole of the square core, while the square core of Patent Document 2 requires a large number of parts, so there is still room for improvement in both cases.

The present invention was made in consideration of these circumstances, and the problem it aims to solve is to provide a square core that is less likely to rattle inside a square hole, a handle unit that includes the square core, and an attachment structure for a handle that uses the square core.

[Square core]
The square core of the present invention is inserted into a square hole of a lock case, and a handle is attached to a portion that protrudes outward from the square hole, and comprises a square core body, a movable body , and a stopper . The square core body has an accommodation groove in which the movable body is accommodated, and a first opening from which a part of the movable body accommodated in the accommodation groove protrudes, and the movable body has a first abutment portion and a second abutment portion that abuts against a restricting portion provided on the square core body, the inner surface of the square hole of the lock case, or the inner surface of the insertion hole for the handle when pressed by the stopper . The first opening is provided on the forward side in the pushing direction of the movable body, and is configured such that when the movable body in the accommodation groove is pressed in the opening direction of the first opening, the first abutment portion of the movable body protrudes from the first opening and is pressed against the inner surface of the square hole of the lock case.

[Handle unit]
The handle unit of the present invention comprises a square core that is inserted into a square hole in a lock case, and a handle that is attached to the square core, and comprises the square core of the present invention as the square core.

[Handle attachment structure]
The handle mounting structure of the present invention is a structure in which a lock case is built into the door body, a square core is inserted into the square hole of the lock case, and a handle is attached to the square core, and the square core used is the square core of the present invention.

The square core of the present invention is configured so that the first contact surface of the movable body is pressed against the inner surface of the square hole, making it less likely to rattle inside the square hole. The same effect can be achieved with handle units and handle attachment structures that include the square core of the present invention.

FIG. 4 is an explanatory diagram showing a part of the handle unit and the door main body of the present invention. FIG. 2A is an explanatory diagram showing an example of the square core of the present invention, and FIG. 1A is a plan view showing an example of a square core of the present invention, FIG. 1B is a front view of FIG. 1A, and FIG. 4A is a cross-sectional view of the square core shown in FIG. 2B, and FIG. 4B is an enlarged view of part IVb in FIG. 1A is a front view showing another example of the square core of the present invention, and FIG. 1B is a cross-sectional view illustrating the use of the square core of FIG. FIG. 4 is an exploded explanatory view showing an example of a handle unit of the present invention. 4A is an explanatory cross-sectional view before the fastener is screwed in, and FIG. 4B is an explanatory cross-sectional view after the fastener is screwed in. FIG. 7A is an enlarged view of a portion VIIIa in FIG. 7A, and FIG. 7B is an enlarged view of a portion VIIIb in FIG. 1A is a cross-sectional view showing the position of the movable body before the fastener is screwed in, and FIG. 1B is a cross-sectional view showing the position of the movable body after the fastener is screwed in. FIG.

(Embodiment of Square Core)
An example of an embodiment of the square core 10 of the present invention will be described with reference to the drawings. As shown in Fig. 1, the square core 10 of the present invention is used by being inserted into a square hole C1 of a lock case C built into a door main body D (more specifically, the square hole C1 of a hub C2 built into the lock case C), and is configured so that lever handles 21, 22 are attached to the parts protruding outward from the square hole C1 (the parts on both ends of the square core 10 in the longitudinal direction).

As shown in Figures 2(a) and 2(b), the square core 10 of this embodiment comprises a square core body 11 and a movable body 12. As shown in Figures 3(a) to 3(c), the square core body 11 is a rod-shaped member that comprises a first peripheral surface 11a, a second peripheral surface 11b, a third peripheral surface 11c, a fourth peripheral surface 11d, a first end surface 11e, and a second end surface 11f.

A first long side 11g is provided between the first peripheral surface 11a and the second peripheral surface 11b, a second long side 11h is provided between the second peripheral surface 11b and the third peripheral surface 11c, a third long side 11i is provided between the third peripheral surface 11c and the fourth peripheral surface 11d, and a fourth long side 11j is provided between the fourth peripheral surface 11d and the first peripheral surface 11a.

As shown in FIG. 4(a), the core body 11 of this embodiment has a storage groove 11k in which the movable body 12 is stored, and a first opening 11m that communicates with the storage groove 11k. The storage groove 11k is formed in a range from the first end face 11e side of the first long side 11g of the core body 11 to a position that is about three-quarters of the total length of the core body 11.

A flat ceiling portion 11n, a first inclined ceiling portion 11p, a first opening portion 11m, and a second inclined ceiling portion 11q are provided at the top of the interior of the accommodation groove 11k. Of the accommodation groove 11k, the flat ceiling portion 11n is the portion (shallow groove portion) in which the narrow portion 12a of the movable body 12 fits, and the first inclined ceiling portion 11p, the first opening portion 11m, and the second inclined ceiling portion 11q are the portions (deep groove portion) in which the wide portion 12b of the movable body 12 fits.

In this embodiment, a portion of the first peripheral surface 11a and a portion of the second peripheral surface 11b are crimped to form a restricting portion 11r (FIG. 4(b)) that prevents (restricts) the movable body 12 from coming out. The restricting portion 11r is formed on the loading/unloading side of the storage groove 11k, immediately below the boundary between the first opening 11m and the second inclined ceiling portion 11q. The restricting portion 11r may be formed at a position other than this.

If the first contact portion 12e does not strike the inner surface of the square hole C1 straight, the second contact portion 12h may slip out of the accommodation groove 11k, weakening the tension of the movable body 12. However, by providing the aforementioned restricting portion 11r, the second contact portion 12h is restricted from slipping out of the accommodation groove 11k, and the tension of the first contact portion 12e can be secured to a degree that does not cause rattling of the square core 10. Note that the restricting portion 11r is not an essential component, and can be omitted when it is not necessary or can be replaced by another component.

A recess 11s is provided in the portion of the first long side 11g on which the accommodation groove 11k is formed, which is located below the shallow groove portion. This recess 11s is a portion in which a stopper 13 (Figure 1) that pushes the movable body 12 toward the first opening 11m is accommodated.

The stopper 13 in this embodiment is also used to secure one of the lever handles (hereinafter referred to as the "first handle") 21 to the square core body 11, and the recessed portion 11s is provided at a position that communicates with the screw hole 21b (FIGS. 7(a) and (b)) formed in the first handle 21. The square core body 11 is provided with a square core side pin hole 11t for inserting a stop pin 14 for securing the other lever handle (hereinafter referred to as the "second handle") 22.

A fall-out prevention portion 11u for preventing the movable body 12 from falling out of the accommodation groove 11k is provided at a position closer to the first end face 11e than the recessed portion 11s of the square core body 11. The fall-out prevention portion 11u in this embodiment is formed by crimping the square core body 11 (specifically, the first peripheral surface 11a and the second peripheral surface 11b of the square core body 11). The fall-out prevention portion 11u can also be formed by a method other than crimping.

The movable body 12 is a member that is accommodated in the accommodation groove 11k of the square core body 11. As shown in Figures 2(a) and (b), the movable body 12 in this embodiment is a thin plate material that is long in the longitudinal direction of the square core body 11, and has a narrow portion 12a and a wide portion 12b. The narrow portion 12a is accommodated in the shallow groove portion of the accommodation groove 11k, and the wide portion 12b is accommodated in the deep groove portion of the accommodation groove 11k.

As shown in Figures 2(b) and 4(a), one side of the movable body 12 (hereinafter referred to as the "upper side of the movable body") has a flat upper side portion 12c, a first inclined upper side portion 12d, a first abutment portion 12e, and a second inclined upper side portion 12f.

The flat upper edge portion 12c abuts against the flat ceiling portion 11n in the storage groove 11k, the first inclined upper edge portion 12d is the portion facing the first inclined ceiling portion 11p in the storage groove 11k, the first abutment portion 12e protrudes from the first opening 11m and abuts against the inner surface of the rectangular hole C1 of the lock case C (more specifically, the inner surface of the hub C2), and the second inclined upper edge portion 12f is the portion facing the second inclined ceiling portion 11q in the storage groove 11k.

The lower edge of the movable body 12 (hereinafter referred to as the "lower edge of the movable body") has a pressed portion 12g and a second abutment portion 12h. A fitting groove 12i into which the restricting portion 11r fits is formed in the second abutment portion 12h. The pressed portion 12g is the portion that the tip of the stopper 13 abuts against, and the second abutment portion 12h is the portion that abuts against the restricting portion 11r.

In this embodiment, the pressed portion 12g is located on the side that is located on the entrance side of the accommodation groove 11k when the movable body 12 is accommodated in the accommodation groove 11k, and is located on one side of the longitudinal half of the movable body 12 (the left side of FIG. 4(a)). The second contact portion 12h is located on the side that is located on the entrance side of the accommodation groove 11k when the movable body 12 is accommodated in the accommodation groove 11k, and is located on the other side of the longitudinal half of the movable body 12 (the right side of FIG. 4(a)). The first contact portion 12e is located on the side that is located on the ceiling side of the accommodation groove 11k when the movable body 12 is accommodated in the accommodation groove 11k, and is located midway between the pressed portion 12g and the second contact portion 12h.

When the movable body 12 in the storage groove 11k is pushed in the direction of the first opening 11m by the stopper 13, the first abutment portion 12e of the movable body 12 protrudes from the first opening 11m and is pressed against the inner surface of the square hole C1 of the lock case C. As a result, the first peripheral surface 11a and second peripheral surface 11b of the square core body 11 and the first abutment portion 12e come into contact with the inner surface of the square hole C1, and the square core 10 is fixed at a predetermined position within the square hole C1.

When the pressed portion 12g is pushed up by tightening the stopper 13, the other end side of the movable body 12 (the second abutment portion 12h side) may tilt toward the insertion/removal opening of the storage groove 11k. However, even in this case, the tilt of the second abutment portion 12h side is regulated by the regulating portion 11r, and the force with which the first abutment portion 12e presses against the inner surface of the square hole C1 is secured, so that the square core 10 is fixed in a predetermined position within the square hole C1 without rattling.

(Other embodiments of the square core)
5(a) and 5(b) , the shape of the movable body 12 can be changed so that the second abutment portion 12h abuts against the inner surface of an insertion hole (hereinafter referred to as the "second insertion hole") 22a of the second handle 22. In this case, the first abutment portion 12e abuts against the upper inner surface of the square hole C1, and the second abutment portion 12h abuts against the inner surface of the second insertion hole 22a of the second handle 22, and the rattling of the square core 10 is prevented by the tension.

The square core 10 of the above embodiment is an example, and the configuration of the square core 10 of the present invention is not limited to the configuration of the above embodiment. The square core 10 of the present invention can be modified by adding, omitting, replacing, or otherwise modifying the configuration to the extent that the intended purpose can be achieved.

(Embodiment of Handle Unit)
Next, an example of an embodiment of the handle unit of the present invention will be described with reference to the drawings. The handle unit of the present invention includes a square core 10 that is inserted into a square hole C1 of a hub C2 (FIGS. 8(a) and (b)) built into a lock case C, and lever handles 21 and 22 that are attached to the square core 10.

In this embodiment, the square core 10 of the present invention is used as the square core 10. The square core 10 has already been described in the above-mentioned embodiment of the square core, so its description will be omitted.

The lever handle (first handle 21) attached to one longitudinal end of the square core 10 has an insertion hole (hereinafter referred to as the "first insertion hole") 21a for inserting the square core 10 and a screw hole 21b for a fastener 13 for fixing the first handle 21 to the square core 10. The screw hole 21b is provided at a position communicating with a recess 11s formed in the square core body 11.

The stopper 13 in this embodiment also serves as a screw for pushing in the movable body 12 of the square core 10, and the stopper 13 screwed into the screw hole 21b pushes the movable body 12 toward the first opening 11m.

Like the first handle 21, the other lever handle (second handle 22) also has a second insertion hole 22a for inserting the square core 10 and a handle-side pin hole (not shown) for a stop pin 14 for fixing the second handle 22 to the square core 10. With the second handle 22 placed over the square core 10, the second handle 22 is fixed to the square core 10 by inserting the stop pin 14 into the handle-side pin hole and the square core-side pin hole 11t.

In this embodiment, the first handle 21 and the second handle 22 are attached to the door body D via mounting bases 21c and 22c located at the base of each handle.

(Other embodiments of the handle unit)
In the above embodiment, the handle is a lever handle as an example, but the handle may be something other than a lever handle.

In the above embodiment, a case where the handles are attached to both longitudinal ends of the square core 10 is shown as an example, but the handles can also be attached to only one longitudinal end of the square core 10.

In the above embodiment, an example is shown in which the second handle 22 is fixed to the square core 10 by inserting a stop pin 14 into the square core side pin hole 11t and the handle side pin hole, but the second handle 22 can also be fixed to the square core 10 by means other than a stop pin.

The handle unit of the above embodiment is an example, and the configuration of the handle unit of the present invention is not limited to the configuration of the above embodiment. The handle unit of the present invention can be modified by adding, omitting, replacing, or otherwise modifying the configuration to the extent that the intended purpose can be achieved.

(Handle unit installation procedure)
Next, a procedure for attaching the handle unit of this embodiment will be described.
(1) After inserting the second end face 11f side of the square core 10 into the second insertion hole 22a of the second handle 22, the locking pin 14 is inserted into the handle side pin hole and the square core side pin hole 11t to fix the second handle 22 to the square core 10.
(2) The square core 10 integrated with the second handle 22 is inserted from one end side of the square hole C1 of the lock case C and protrudes to the other end side.
(3) The first handle 21 is placed on the first end surface 11e of the square core C1 protruding from the other end, and in this state, the stopper 13 is screwed into the screw hole 21b. At this time, the stopper 13 is screwed all the way in to push in the pressed portion 12g of the movable body 12, and the first abutment portion 12e of the movable body 12 is caused to protrude from the first opening 11m and abut against the inner surface of the square hole C1.
(4) Through the above steps, the square core 10 is fixed within the square hole C1 of the lock case C, and the first handle 21 and the second handle 22 are fixed to both longitudinal ends of the square core 10.

Although not explained in (1) to (4) above, the first handle 21 and the second handle 22 are fixed to the door body D via mounting seats 21c and 22c located at the base side of each handle.

The above installation procedures (1) to (4) are examples, and the handle unit of this embodiment can be installed using procedures other than these. In any case, by pushing the movable body 12 in with the stopper 13 and causing the first abutment portion 12e to protrude from the first opening 11m and abut against the inner surface of the square hole C1, it is possible to prevent the square core 10 from rattling within the square hole C1.

(Embodiments of handle attachment structure)
Finally, an example of an embodiment of the handle mounting structure of the present invention will be described with reference to the drawings. In the handle mounting structure shown in Figures 7(a)(b) and 8(a)(b), a lock case C is built into a door main body D, a square core 10 is inserted into a square hole C1 of the lock case C (more specifically, the square hole C1 of a hub C2 built into the lock case C), and lever handles 21 and 22 are attached to both longitudinal ends of the square core 10.

In this embodiment, the door body D is made of wood. In addition to wood, the door body D can also be made of various materials such as aluminum, stainless steel, resin, steel, and polypropylene plywood. There are no particular limitations on the size or shape of the door body D.

As shown in Figures 7(a)(b) and 8(a)(b), a lock case C is built into the door body D. The lock case C is a thin box member with a built-in lock mechanism. A hub C2 with a square hole C1 is built into the lock case C of this embodiment. The square hole C1 formed in the hub C2 is a diamond-shaped hole large enough to fit the square core body 11, with the corners positioned at the top, bottom, left and right. An existing lock case C can be used for the lock case C.

The square core 10 of the present invention is inserted into the square hole C1 of the lock case C. The square core 10 has already been described in the embodiment of the square core, so a description of the square core 10 is omitted.

As shown in Figure 9 (a) and (b), the square core 10 is inserted in such a way that the receiving groove 11k is located on the lower side. The square core 10 inserted in the square hole C1 has both longitudinal ends protruding from the front and rear of the door body D, and the lever handles 21 and 22 are attached to the protruding parts.

In this embodiment, the first handle 21 is fixed to the part of the square core 10 that protrudes on one side of the door body D, and the second handle 22 is fixed to the part that protrudes on the other side. In this embodiment, L-shaped lever handles are fixed as the first handle 21 and the second handle 22. The first handle 21 and the second handle 22 are fixed to the door body D via mounting seats 21c, 22c located on the base side. The configurations of the first handle 21 and the second handle 22 have already been explained in the embodiment of the handle unit, so explanations will be omitted.

The first handle 21 is fixed to the square core 10 by screwing the stopper 13 into the screw hole 21b, and the second handle 22 is fixed to the square core 10 by inserting a stop pin 14 into both the handle side pin hole of the second handle 22 and the square core side pin hole 11t of the square core body 11.

As shown in Figures 9(a) and (b), in this embodiment, the first contact portion 12e protrudes from the first opening 11m and abuts against the inner surface of the square hole C1, and the first peripheral surface 11a and the second peripheral surface 11b of the square core body 11 abut against the lower inner surface of the square hole C1, so that the square core body 11 and the movable body 12 are pressed against the inner surface of the square hole C1, eliminating rattling.

Even if the movable body 12 is not pushed straight in and the first contact portion 12e does not come straight into contact with the inner surface of the square hole C1, a part of the first contact portion 12e comes into contact with the inner surface of the square hole C1 and the second contact portion 12h comes into contact with the restricting portion 11r, so that the square core 10 is pressed against the inner surface of the square hole C1 and there is no wobbling. In this case, the pushed portion 12g is the force point, the contact portion between the second contact portion 12h and the restricting portion 11r is the fulcrum, and the contact portion between the first contact portion 12e and the inner surface of the square hole C1 is the action point.

(Other embodiments of the handle attachment structure)
In the above embodiment, an example is given of the case where the square core 10 shown in Figures 2(a) and 2(b) and Figures 3(a) to (c) is used. However, when the square core 10 having the movable body 12 shown in Figure 5(a) is used, as shown in Figure 5(b), the first abutment portion 12e abuts against the upper surface side of the square hole C1, and the second abutment portion 12h abuts against the inner surface of the second insertion hole 22a of the second handle 22, so that the square core 10 is pressed against the inner surface of the square hole C1 and no rattling occurs.

In this case, the pressed portion 12g is the force point, the contact portion between the second contact portion 12h and the second insertion hole 22a is the fulcrum, and the contact portion between the first contact portion 12e and the inner surface of the rectangular hole C1 is the action point.

The handle attachment structure of the above embodiment is an example, and the configuration of the handle attachment structure of the present invention is not limited to the configuration of the above embodiment. The handle attachment structure of the present invention can be modified by adding, omitting, replacing, etc., components to the extent that the intended purpose can be achieved.

10 Square core 11 Square core body 11a First peripheral surface 11b Second peripheral surface 11c Third peripheral surface 11d Fourth peripheral surface 11e First end surface 11f Second end surface 11g First long side 11h Second long side 11i Third long side 11j Fourth long side 11k Storage groove 11m First opening 11n Flat ceiling portion 11p First inclined ceiling portion 11q Second inclined ceiling portion 11r Regulating portion 11s Recessed portion 11t Square core side pin hole 11u Fall-out prevention portion 12 Movable body 12a Narrow portion 12b Wide portion 12c Flat upper edge portion 12d First inclined upper edge portion 12e First contact portion 12f Second inclined upper edge portion 12g Pressed portion 12h Second contact portion 12i Fitting groove 13 Stopper 14 Stopper pin 21 Lever handle (first handle)
21a Insertion hole (first insertion hole)
21b Screw hole 21c Mounting seat 22 Lever handle (second handle)
22a Insertion hole (second insertion hole)
22c Mounting base C Lock case C1 Square hole C2 Hub D Door body

Claims (5)

In a square core that is inserted into a square hole in a lock case and has a handle attached to the part that protrudes outside the square hole,
Equipped with a square core body, a movable body, and a stopper ,
The square core body has an accommodation groove in which the movable body is accommodated and a first opening,
The movable body includes a first contact portion and a second contact portion that contacts a regulating portion provided on the square core body, an inner surface of the square hole of the lock case, or an inner surface of the insertion hole of the handle when the movable body is pressed by the stopper ,
The first opening is provided on a front side of the movable body in a pushing direction,
When the movable body in the accommodation groove is pushed in the direction of the first opening, the first contact portion of the movable body protrudes from the first opening and is pressed against the inner surface of the rectangular hole of the lock case.
A square core characterized by: In the square core according to claim 1 ,
The movable body has a pressing portion,
The movable body is accommodated in the accommodation groove so that the pressed portion is located on one side of the longitudinal half of the square core body, and the second abutment portion is located on the other side of the longitudinal half of the square core body.
A square core characterized by: In the square core according to claim 2 ,
The movable body is a thin plate that is long in the longitudinal direction of the square core body,
the pressing portion is provided on a side that is located on an entrance side of the accommodation groove when the movable body is accommodated in the accommodation groove, and is provided at a position on one side of a longitudinal half of the thin plate-like movable body,
the second contact portion is a side located on an inlet side of the accommodation groove when the movable body is accommodated in the accommodation groove, and is provided on the other side of the longitudinal half of the movable body,
The first contact portion is a side that is located on the ceiling side of the accommodation groove when the movable body is accommodated in the accommodation groove, and is provided midway between the pressed portion and the second contact portion.
A square core characterized by: A handle unit including a square core to be inserted into a square hole in a lock case and a handle attached to the square core,
The square core is the square core according to any one of claims 1 to 3 .
A handle unit characterized by: In a handle mounting structure in which a lock case is built into a door body, a square core is inserted into a square hole in the lock case, and a handle is attached to the square core,
The square core is the square core according to any one of claims 1 to 3 .
A handle attachment structure.

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