JP2604832Y2 - Toilet flush operation mechanism - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a toilet flushing system having a double inner and outer tank structure in order to prevent condensation water from adhering to the outer surface of the flushing tank due to a difference between the temperature in the toilet room and the flushing water temperature. The present invention relates to a cleaning operation mechanism in a tank.

[0002]

2. Description of the Related Art In a toilet flushing tank having a double inner / outer tank structure, an inner tank for storing flush water is usually mounted and fixed on the rear upper surface of a toilet body, and an outer tank is covered so as to cover the inner tank. The washing operation mechanism in this type of toilet washing tank generally has a lever handle for operation fixed to the inner tank as shown in, for example, Japanese Utility Model Laid-Open No. 63-163572. It is a target.

However, it is difficult to obtain dimensional accuracy of a relatively large molded product such as a toilet bowl washing tank. In particular, the tendency of ceramic products is remarkable due to thermal expansion and contraction during firing. Therefore, the distance between the inner tank and the outer tank varies considerably. Therefore, in the case where the operation lever handle is fixed to the inner tank as in the prior art, the position of the operation lever is controlled to be constant by the distance from the inner tank, so that the dimensional accuracy of the outer tank varies. Due to the attachment, the gap between the lever handle and the outer tank becomes too large, the phenomenon that the lever handle hits the outer tank, etc. occurs. In the latter case, the lever handle may become inoperable, and in severe cases, the lever handle may not even be attached.

On the other hand, to solve the above problem, an operating shaft for operating a drain valve is pivotally mounted on an inner tank, and an operating lever handle is attached to a toilet body to handle the operating shaft and the handle shaft of the lever handle. And Japanese Patent Application Laid-Open No. 5-13822, which connects the operation unit side and the operation unit side of the cleaning operation mechanism with a gear, a cable, and the like. Not only does the number of parts increase, the cost increases, but also, because the operating shaft is activated by winding the cable with the lever handle, the rotation angle of the handle increases when trying to rotate the handle with a small torque. As a result, the operability is deteriorated. If the operability is to be avoided, the torque increases and a large force is required for the operation. In addition, since the connection between the cable and the handle shaft of the lever handle must be performed within the gap between the inner tank and the outer tank, the connecting operation is very difficult and troublesome.
Even if a U-shaped hole or a round hole is formed in the outer tank and the cable is drawn out of the outer tank, the processing and the operation of pulling out the cable are not easy.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned various problems of the prior art, and the object thereof is not affected by the dimensional accuracy of the tank at all, and the operation lever is not required. To provide a flushing operation mechanism for a toilet flushing tank with a double inner / outer tank structure that can maintain a constant gap between the handle and the outer tank, has a simple structure, reduces the number of parts, and does not increase cost. is there.

[0006]

In order to achieve the above object, a flush operation mechanism for a toilet according to the present invention comprises a flush water tank for a flush toilet comprising an inner tank for storing flush water and an outer tank containing the inner tank. A washing operation mechanism, comprising: an operation lever handle attached to an outer wall surface of the outer tank; and an end connected to the operation lever handle and having one end protruding into a gap formed between the inner tank and the outer tank. A handle shaft, and an operating shaft rotatably supported by a rotation support portion provided on a side wall of the inner tank and having one end protruding into the gap portion, and rotatably operating to open and close a drain valve; In the above, the handle shaft and the operating shaft are in direct contact with each other at a position distant from the respective rotation axes, and the working shaft is operated by the rotation of the handle shaft. It is intended.

[0007]

The flushing operation mechanism for a toilet bowl constructed as described above has a double tank structure inside and outside, and is a tank for flushing a toilet bowl in which an outer tank is covered from above by an inner tank installed in a toilet body. Also, it is possible to attach and fix the operation lever handle to the outer tank. Therefore,
Even if the distance between the inner tank and the outer tank varies, the dimensional accuracy of the tank is not affected at all, and the gap between the lever handle and the outer tank is always constant.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 denotes an inner tank, 2 denotes an outer tank, and an operating shaft 3 for operating a drain valve (not shown) is attached to an upper portion of a side wall of the inner tank 1, and the outer tank 2 corresponds to the operating shaft 3. A lever handle 4 for operation is attached at the position.

The inner tank 1 stores washing water.
It is made of a synthetic resin molded product, and is placed and fixed on an installation section (not shown) formed at the rear of the toilet body, and communicates with the flush water passage of the toilet body through a drain valve provided at the bottom. ing. An operating lever 3 is provided on the upper side wall of the inner tank 1.
Is provided in the shape of a through hole. On the other hand, the outer tank 2 is for preventing the condensation water from adhering to the outer surface of the washing tank due to the difference between the temperature in the toilet room and the temperature of the washing water. It is installed in the installation section. The outer tank 2 is made of pottery, is formed in a box shape with an open lower surface, and has a structure that covers the inner tank 1 by covering the inner tank 1 installed in the toilet body from above. An appropriate gap a is provided between the inner tank 1 and the outer tank 2.

The operating shaft 3 penetrates a through-hole-shaped rotary support portion 5 provided in the upper part of the side wall of the inner tank 1 and is rotatably supported by the portion and extends into the inner tank 1. A rear end portion extending into the gap a between the first tank 1 and the outer tank 2 is formed in a shape bent in the same direction, and usually, the tip of the bent portion at both ends faces downward.

The lever handle 4 connects a handle shaft 7 formed in a crank shape, and the handle shaft 7 connects the inner tank 1 and the outer tank 2 via a bearing 8 attached to a side wall of the outer tank 2. It is attached to the outer tank 2 so as to extend into the gap a.

The bearing member 8 is composed of a flanged cylinder 8a threaded on the outer peripheral surface and a nut 8b screwed to the cylinder 8a. Fitted from the outside of the tank 2, tightened from the inside with a nut 8 b, and attached to the outside tank 2 with the flange and the nut 8 b sandwiching the side wall of the outside tank 2. The bearing 8 is inserted from the inside of the tank 2, and the lever handle 4 is fixed to the outer end thereof with a screw 10. A collar-shaped stopper 11 is formed in the middle of the handle shaft 7, and the stopper 11 contacts the bearing 8, so that the position of the rear end of the handle shaft 7 is maintained constant.

The handle shaft 7 has a bent front end located below the bearing 8 in a normal state, and its side surface is in direct contact with the side surface of the bent rear end of the operating shaft 3.

Thus, the distal end of the handle shaft 7 is
By rotating the lever handle 4 so as to rotate upward in the direction in contact with the rear end of the operating shaft 3, the rear end of the operating shaft 3 is flipped up by the handle shaft 7, and the operating shaft 3 is moved. By rotating the front end portion so as to swing upward, the upward movement of the distal end portion of the operating shaft 3 allows the drain valve to be pulled up and opened via the ball chain 6.

According to such a structure of the present invention, even if the outer tank 2 covers the inner tank 1 by covering the inner tank 1 installed on the toilet body from above, the lever handle 4 can be moved outward. The outer tank 2 and the lever handle 4 can be attached and fixed to the tank 2.
Can be managed at a constant interval.

[0016]

[Effect] Since the present invention is configured as described above, the following effects can be obtained. (1). Even if it is a toilet bowl washing tank that has a double tank structure inside and outside and covers the outside tank from above on the inside tank installed in the toilet body, the operation lever handle can be attached to the outside tank and fixed, The gap between the lever handle for operation and the outer tank can be maintained at a constant level without being affected by the dimensional accuracy of the tank at all. There is no backlash, no lever handle hitting the outer tank, the lever handle cannot be operated, and the lever handle cannot be attached. (2). Since the operating shaft attached to the inner tank and the lever handle attached to the outer tank are in contact with each other, the number of parts is small, the structure is simple, and the manufacturing cost is low. (3). Since the operating shaft attached to the inner tank and the lever handle attached to the outer tank are separated, the outer tank can be removed without disconnecting the operating shaft from the lever handle during maintenance, etc. Good maintainability.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a flushing operation mechanism of a toilet according to an embodiment of the present invention, showing a non-operating state.

FIG. 2 is a sectional view showing an operation state.

[Explanation of symbols]

1: Inside tank 2: Outside tank 3: Operating axis 4: Lever handle 5: Rotation support section 7: Handle axis

Continuation of the front page (56) References Japanese Utility Model 1983-111271 (JP, U) Japanese Utility Model 1987-163572 (JP, U) Japanese Utility Model 6-57977 (JP, U) Japanese Utility Model Utility Model 3-115178 (JP, U) , U) Japanese Patent Publication No. 2-62654 (JP, B2) Japanese Utility Model Publication No. 5-13822 (JP, Y2) Japanese Utility Model Publication 56-9026 (JP, Y2) Japanese Utility Model Publication 47-16944 (JP, Y1) (58) Field surveyed (Int.Cl. ⁷ , DB name) E03D 5/09

Claims (1)

(57) [Scope of request for utility model registration] 1. A cleaning operation mechanism for a flush water tank for a toilet bowl comprising an inner tank 1 for storing flush water and an outer tank 2 containing the inner tank 1, the flush operation mechanism being attached to an outer wall surface of the outer tank 2. An operating lever handle 4, a handle shaft 7 connected to the operating lever handle 4 and having one end protruding into a gap a formed between the inner tank 1 and the outer tank 2, a side wall of the inner tank 1. An operating shaft 3 rotatably supported by a rotation support portion 5 provided at the front end, protruding one end into the gap portion a, and rotating to perform an opening / closing operation of a drain valve. And the operating shaft 3
A direct operation at positions distant from the respective rotation axes, and the operation shaft 3 is operated by the rotation of the handle shaft 7.