JP3858711B2 - Lever handle mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
Concerning a toilet having a water storage tank for storing cleaning water, the lever handle mechanism for controlling the flow of cleaning water into and out of the toilet bowl by opening and closing the drain valve provided in the tank by operating the lever handle It is.
[0002]
[Prior art]
11, 12 and 13 show a conventional lever handle mechanism. The mechanism is such that the mounting portion 51a of the spud main body 51 is inserted into the mounting square hole 50 of the tank A and is fixed from the inside of the tank by a fixing nut 52, and the arm 53 is inserted substantially at the center of the mounting portion 51a. The pin 54 has a rotation fulcrum, and its end 55 projects from the surface of the spud body 51. The lever handle 56 is a shaft 58 that is eccentric from the shaft 57 of the arm 53 by a fixed distance, passes through the spud body 51 by a fixing screw 59, is fixed to the female screw portion 60 of the lever handle 56, and the shaft 58 serves as a rotation axis. Has a degree of freedom in the direction of rotation.
Further, on the back side of the lever handle 56, there is a storage portion 61 for storing the end portion 55 of the arm 53, and the rotation operation of the arm 53 is operated by the rotation of the lever handle 56, that is, the rotation of the storage portion 61. It is regulated by the storage unit 61. That is, the rotation angle restricted by the storage portion 61 is smaller than the rotation angle restricted by the space in which the arm 53 of the spud body 51 is accommodated.
In the initial state, the arm 53 lifts the end 55 by its own balance, and the lever handle 56 is also lifted by the end 55. During the cleaning operation, the end portion 55 is also pushed down by pushing down the operation portion 56a of the lever handle 56 by a small angle, and the arm 53 rotates in a substantially vertical plane with the pin 54 as a fulcrum to lift the end portion 62. The drain valve 63 connected to 62 is pulled up, and the water stored in the tank A is discharged.
[0003]
[Problems to be solved by the invention]
In the case of the conventional lever handle mechanism, in the lever handle mechanism in which the arm is moved up and down in a substantially vertical plane by opening and closing the drain valve by opening and closing the drain valve, as shown in FIG. When the shape of the operation portion 56a of the handle 56 is located at the lowermost end of the lever handle 56, the operation rotation angle is small as it is as described above, and it is easily turned to the full when the lever handle 56 is operated, and during the cleaning operation. This is not preferable because the lever handle is overloaded. The operation angle may be small as long as the operation portion 56a is provided in a substantially horizontal direction and is pushed downward substantially vertically as in the conventional case.
Therefore, as shown in FIG. 15, the restriction of the rotation angle of the arm 53 by the storage portion 61 is stopped, the space of the storage portion 61 is increased, a rotation angle region where the lever handle 56 and the arm 53 are not interlocked is secured, and the lever at the time of operation When the rotation angle of the handle 56 is increased, the rotation shaft 58 of the lever handle 56 and the shaft 57 of the mounting square hole 50 of the tank A are decentered, so that the tank mounting square hole 50 cannot be seen in appearance during operation. The lever handle 56 must have a main body portion having a circular area with a radius that covers the mounting square hole 50 around the shaft 58 within a minimum operating angle 64 of the lever handle 56. There will be restrictions in designing the handle shape. In addition, when the lever handle operating portion is positioned at the lower end as described above, the operation rotation direction of the lever handle is usually set so that cleaning is performed when the lever handle is rotated toward the front. At this time, if the lever handle does not rotate in the opposite direction at all, the lever handle may be directly overloaded and cause damage due to an abnormal action such as kicking and pushing the lever handle with a foot.
[0004]
Therefore, the present invention has less restrictions on designing the shape of the lever handle in the lever handle mechanism that opens and closes the drain valve by operating the arm up and down in a substantially vertical plane by rotating the lever handle. To provide a lever handle mechanism that is capable of a compact design, can provide a wide range of operating angles to the lever handle, and has a mechanism that prevents an overload from being applied to the lever handle mechanism due to abnormal operation or the like. Objective.
[0005]
[Means for solving the problems and actions / effects]
The lever handle mechanism according to claim 1, wherein the lever handle mechanism is attached to a toilet cleaning tank side wall and pivoted, a spud body attached to a through hole in the toilet cleaning tank side wall, and a penetrating through the spud body. An arm that opens and closes a drain valve connected to one end of the valve and operates vertically in a substantially vertical plane; a cover interposed between the spud body and the lever handle; and an interior of the cover. A pivotable shaft coupled to the lever handle, and the arm is pivotally supported by an arm pin disposed in a substantially horizontal direction in the spud body, and on the other end opposite to the one end. A penetrating pin hole is provided, the shaft is provided with a claw protruding to the spud body side, the long side of the L-shaped pin is inserted into the pin hole and the short side is locked to the spud body, and the The claws of the shaft by turning the over handle by pressing the long side of the L-shaped pin length side is rotated about said short side, said arm in conjunction therewith, characterized in that to operate. By adopting such a configuration, even if the lever handle is given a wide range of rotation angles, the lever handle body only needs to have a minimum area covering the through hole, and can be designed compactly.
[0006]
The lever handle mechanism according to claim 2 is characterized in that a rotation range region of the lever handle is configured by an interlocking region interlocking with the arm and a free non-interlocking region not interlocking with the arm.
By adopting such a structure, it is possible to give the free rotation area before reaching the area where the substantial arm is interlocked when operating the handle, and to ensure a large rotation angle necessary for the handle operation. it can.
[0007]
The lever handle mechanism according to claim 3 is characterized in that the non-interlocking area is provided in one rotation direction of the lever handle and the non-interlocking area is provided in the other rotation direction with reference to a standby state.
With such a structure, when the lever handle is vigorously turned in the wrong operation direction or kicked and pushed by a foot, the lever handle rotates directly to the non-interlocking area and thus is not directly subjected to the load. This will prevent damage to the lever handle.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings.
The structure consists of a lever handle 1, a fixing screw 2, a decorative cap 3, a cover 4, a shaft 5, an L-shaped pin 6, a spud body 7, an arm 8, an arm pin 9, and a fixing nut 10, which are disassembled into FIGS. The figure is shown.
[0009]
First, the assembly procedure will be described. The spline 5a for rotational positioning provided on the shaft 5 is inserted and protruded from the inside of the cover 4, and the lever handle 1 having the spline 1a fitted to the spline 5a portion is fitted at a predetermined angle. The fixing screw 2 is screwed into the female screw portion 5b provided at the center of the spline 5a through the lever handle 1, and the cosmetic cap 3 is press-fitted to the head of the fixing screw 2. At this time, the cover 4 is sandwiched between the lever handle 1 and the shaft 5, but is not fastened to both, so that the cover 4 has a degree of freedom in the rotation direction with respect to the integrated lever handle 1 and the shaft 5.
[0010]
Next, from the back of the spud body 7 (left side in FIG. 3), the side of the arm 8 with the pin holes 11 and 12 is inserted until the pin hole 11 protrudes from the surface of the spud body 7, and the arm pin 9 is inserted into the pin hole. The arm 8 is pulled back while holding the arm pin 9 (FIG. 4).
[0011]
Next, the long side 6a of the L-shaped pin 6 is passed through the pin hole 12, and the short side 6b of the L-shaped pin 6 is provided on the surface of the spud body 7 and at a position on the central horizontal axis at a certain distance from the center. The arm 8 is pulled back so as to fit in the pin hole 13 (FIG. 5), and the arm pin 9 is firmly snap-fitted into a predetermined position provided inside the spud body 7. The arm 8 is pivotally supported so as to be rotatable about the arm pin 9 (FIG. 6).
[0012]
Next, the female screw 4a provided on the inner side of the side wall of the cover 4 and the male screw 7a provided on the outer periphery of the spud body portion 7 are screwed together and assembled together. At this time, the claw 14 provided on the outer peripheral portion of the shaft 5 is positioned above the long side 6a of the L-shaped pin 6 and between the stopper 16 provided in a convex shape on the spud body 7. Further, the direction of the screw connection between the spud body 7 and the cover 4 is such that the lever handle 1 is tightened with respect to the rotational direction in which the lever handle 1 is lifted to prevent loosening during the operation of the handle. Since the assembly so far is an operation not related to the tank to be actually attached, it can be completed in advance or at another place for convenience. Next, as for the attachment to the tank, the spud body 7 is passed through the mounting square hole 17 of the tank A together with the arm 8 from the outside to position in the rotational direction, and the fixing nut 10 is passed through the arm 8 from the inside to sandwich the tank. And screwed together (FIG. 7).
[0013]
Next, the mechanism during operation will be described. FIG. 8 shows the initial positional relationship before operation. In the initial state, the lever handle 1 is positioned at the lowest end due to its own weight, and the claw 14 of the shaft 5 integrated with the lever handle 1 is above the long side 6a of the L-shaped pin 6 and the spud body 7 as described above. It is in the position shown in the figure between the stopper 16 provided in a convex shape and is not in contact with the L-shaped pin 6. The arm 8 is pivotally supported around an arm pin 9 disposed in a substantially horizontal direction, and the pin hole 12 side is lifted by the balance of its own weight, and is held in the pin hole 12 and is a rotation shaft of the lever handle 1. And the L-shaped pin 6 having a rotation axis substantially parallel to the lifted state. Further, the normal line lowered from the rotation center of the arm 8 to the rotation plane of the lever handle 1 and the rotation axis of the lever handle 1 are substantially on the same straight line and are positioned at the approximate center of the mounting square hole 17 of the tank A. .
[0014]
FIG. 9 shows a state when the lever handle 1 is turned to the full position by the cleaning operation. When the lever handle 1 starts to rotate, the claw 14 hits the L-shaped pin 6 when it rotates by a certain angle (the non-interlocking area), and further turns the lever handle 1 (the interlocking area) to push the L-shaped pin 6 downward, The L-shaped pin 6 hits against a convex stopper 15 provided on the spud body 7 and stops. Although the stoppers 15 and 16 are connected in the drawing, it is not necessary to be so. At this time, the L-shaped pin 6 rotates downward with the pin hole 13 as a fulcrum and pushes down the arm 8. The arm 8 rotates in a substantially vertical plane with the arm pin 9 as a fulcrum, lifts the other end located in the tank and lifts and opens the drain valve connected to the other end. At this time, the arm pin 9 is firmly snap-fit at a predetermined position of the spud body 7 so that the fulcrum is not displaced when the arm 8 rotates, so that the position does not slide and move.
[0015]
When the lever handle 1 is fully pulled up and then removed, the lever handle descends by its own weight and returns to its initial position. On the other hand, the arm 8 rotates in the direction of lifting the pin hole 12 side by its own weight as the claw 14 moves away from the L-shaped pin 6, and returns to the initial position together with the L-shaped pin 6.
[0016]
FIG. 10 is an explanatory diagram related to claim 3. When the lever handle 1 is rotated in the direction opposite to the cleaning operation direction (the non-interlocking region), the claw 14 rotates from the initial position in FIG. 8 in a direction not in contact with the L-shaped pin 6 and stops at the convex stopper 16. . When the lever handle of this mechanism is mounted on the left side of the tank, turning the lever handle 1 forward toward the toilet will result in a normal draining operation, and turning the lever handle in the opposite direction, that is, the other side will turn the handle 1 Only free to turn a certain angle.
This means that when the lever handle 1 is intentionally kicked and pushed from the front, if the handle 1 does not turn at all in the kicking direction, the handle 1 is overloaded and may cause a failure. With the above structure, even if the handle is kicked, the handle 1 rotates freely at a fixed angle, so that the impact is not transmitted directly and damage can be prevented.
[0017]
In addition, the setting of the operation direction of the handle is preferably set to the front side toward the toilet as described above. If a normal handle operation is set in the direction of pushing toward the toilet, the washing operation can be performed even by kicking with a foot, which is not preferable.
[0018]
Further, the rotational movement of the lever handle can be transmitted to the arm via a flexible member such as a wire or a chain.
[0019]
【The invention's effect】
As described above, according to the present invention, in the lever handle mechanism in which the arm is operated in the vertical direction in a substantially vertical plane by the rotation operation of the lever handle, and the drain valve is opened and closed, the restriction on designing the shape of the lever handle is more than conventional. A smaller and more compact design is possible, a wide range of operating angles can be given to the lever handle, and an overload can be prevented from being applied to the lever handle mechanism due to an abnormal operation or the like.
[Brief description of the drawings]
FIG. 1 is an exploded view (bird's eye view) of a lever handle mechanism according to the present invention.
FIG. 2 is an exploded view (right side) of the lever handle mechanism according to the present invention.
FIG. 3 is a view showing an assembly procedure of the lever handle mechanism according to the present invention.
FIG. 4 is a diagram showing an assembly procedure of the lever handle mechanism according to the present invention.
FIG. 5 is a diagram showing an assembly procedure of the lever handle mechanism according to the present invention.
FIG. 6 is a diagram showing an assembly procedure of the lever handle mechanism according to the present invention.
FIG. 7 is a view showing attachment of a lever handle mechanism according to the present invention to a tank.
FIG. 8 is a cross-sectional view showing a lever handle mechanism according to the present invention.
FIG. 9 is a cross-sectional view showing a lever handle mechanism according to the present invention.
FIG. 10 is a cross-sectional view showing a lever handle mechanism according to the present invention.
FIG. 11 is a view showing a structure of a toilet having a conventional lever handle mechanism.
FIG. 12 is a view showing a structure of a conventional lever handle mechanism.
FIG. 13 is a view showing a structure of a conventional lever handle.
FIG. 14 is a view showing a structure of a conventional lever handle.
FIG. 15 is a view showing a structure of a conventional lever handle.
[Explanation of symbols]
A ... tank 1 ... lever handle 1a ... positioning spline 2 ... fixing screw 3 ... decorative cap 4 ... cover 4a ... female screw 5 ... shaft 5a ... positioning spline 5b ... female screw portion 6 ... L-shaped pin 6a ... long side 6b ... Short side 7 ... Spud body 7a ... Male screw 8, 53 ... Arm 9 ... Arm pin 10 ... Fixing nut 11 ... Pin hole 12 ... Pin hole 13 ... Pin hole 14 ... Nail 15, 16 ... Stopper 17 ... Mounting square hole 50 ... Mounting square hole 51 ... Spud body 52 ... Fixing nut 53 ... Arm 54 ... Pins 55, 62 ... End 56 ... Lever handle 56a ... Operating part 57, 58 ... Shaft 59 ... Fixing screw 60 ... Female screw part 61 ... Storage part

Claims (3)

A lever handle that is attached to the side wall of the toilet flushing tank and pivoted, a spud body that is attached to a through hole in the side wall of the toilet flushing tank, a penetrating through the inside of the spud body, and operating vertically in a substantially vertical plane An arm that opens and closes a drain valve connected to one end, a cover interposed between the spud body and the lever handle, and a pivotable switch disposed inside the cover and connected to the lever handle. A shaft,
The arm is provided with a pin hole that is pivotally supported by an arm pin disposed in a substantially horizontal direction in the spud body and penetrated to the other end opposite to the one end.
The shaft is provided with a claw protruding to the spud body side,
  Insert the long side of the L-shaped pin into the pin hole and lock the short side to the spud body,
  By turning the lever handle, the claw of the shaft pushes the long side of the L-shaped pin, the long side turns around the short side, and the arm operates in conjunction with the lever. Handle mechanism.   2. The lever handle mechanism according to claim 1, wherein a rotation range area of the lever handle is constituted by an interlocking area interlocking with the arm and a free non-interlocking area not interlocking with the arm. .   3. The lever handle mechanism according to claim 2, wherein the interlocking region is provided in one rotation direction of the lever handle and the non-interlocking region is provided in the other rotation direction with reference to a standby state. .

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