JP3697314B2 - Lever handle device for drain plug - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a lever handle device for a water drain plug, and more specifically, operates a valve piece that performs a function of switching between a water drain plug and a water stoppage / drainage. It is related with the lever handle apparatus for hold | maintaining in the position.
[0002]
[Prior art]
As a representative drainage tap, there is an antifreeze drainage tap used in cold districts, etc., and if necessary, operate this drainage tap to drain from the rising part of the pipe to prevent freezing. To do. As one of such drain plugs, for example, as shown in FIG. 9, a handle device 102 in which a valve piece (not shown) arranged in the drain plug 100 so as to be movable up and down is installed on the upper portion of the outer tube 101. Thus, there are some which are moved up and down via a spindle (not shown) or the like extending in the outer tube 101.
[0003]
By the way, such an antifreeze water drain plug is used many times a day in the cold season, so that it is required to be easy and stable in operation and durability of the apparatus. On the other hand, except in the cold season, the water passage is usually maintained for a long time. In addition, when installed in a villa or the like, it may be maintained in a drained state for a long period of time, such as during a period when no person is staying. In this way, when the same state is maintained for a long period of time, if dust or the like enters and accumulates in the handle device, it may cause trouble if an attempt is made to operate it at a later date.
[0004]
[Problems to be solved by the invention]
The present invention has been made in view of the above points, is easy to operate, can be stably switched, has excellent durability, and the operation function is impaired by external dust or the like. An object of the present invention is to provide a lever handle device for a drain plug without any problems.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, in the lever handle device for a drain plug according to the present invention, a case attached to the upper part of the outer tube of the drain plug, and a rotation shaft implanted in the case, A lever handle that is mounted rotatably in a surface extending in the axial direction of the outer tube, and is mounted to be movable in the axial direction of the outer tube in the case, and a valve piece of a drain plug is connected to the lower end portion And a connecting member. The connecting member has a bottomed recess having a depth in a direction perpendicular to the axial direction of the outer tube. The apparatus further includes a slide pin housed in the recess so as to be movable in a depth direction of the recess, a compression spring disposed between the bottom of the recess and the slide pin in the recess, and a lever handle. And a roller that is rotatably mounted about an axis parallel to the rotation axis at a position eccentric from the rotation axis, and that abuts against the outer end of the slide pin.
[0006]
Embodiment
Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, the scope of the present invention is not limited to the embodiments described below.
[0007]
FIG. 1 is a central longitudinal sectional view of a drain tap lever handle device 1 according to an embodiment of the present invention, in which a valve piece of a drain tap (not shown) is in a lower limit position, that is, in a first position. FIG. 3 shows a state in which the valve piece is also in its upper limit position, ie the second position, and FIG. 2 shows a state in which it is at an intermediate switching point between the first and second positions. It is.
[0008]
The lever handle device 1 includes a case 3 attached to the upper part of the outer tube of the drain plug. The case 3 includes a ring 7 attached to a circumferential groove 5 formed near the lower end thereof, and the ring 7. It is fixed to the upper end of the outer tube by a cap nut 9 that is prevented from coming off.
[0009]
4 is a front view of the case 3, and FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. The case 3 has a substantially cylindrical shape, the lower end is opened, the upper end is closed, and a space 11 for accommodating a joint 51 as a connecting member described later is formed inside. A rectangular opening 15 having a long side in the axial direction of the case 3 is opened in the substantially cylindrical side wall 13. Opening walls 17 and 19 are provided that extend in the vertical direction along the long side of the opening 15 and extend outward from the side wall 13 so as to face each other. The inner side surfaces 18 and 20 of the opening walls 17 and 19 extend into the void 11 as they are and intersect the inner peripheral surface 14 of the side wall 13. The opening walls 17 and 19 are formed with shaft holes 21 and 23 into which a rotation shaft of a lever handle 31 described later is inserted, respectively.
[0010]
Reference numeral 31 denotes a lever handle. A shaft 29 supported by the shaft holes 21 and 23 formed in the opening walls 17 and 19 of the case 3 is inserted into the shaft hole 33 formed in the main body portion 32. As a result, it faces the opening 15 of the case 3 and is rotatably attached to the case 3. The thickness of the main body portion 32 of the lever handle 31 is slightly smaller than the width of the opening 15 of the case 3, and there is almost no gap between the two when attached, but the grip portion provided at one end portion 35 is slightly thicker than the main body 32.
[0011]
Reference numeral 37 denotes a roller mounting portion 37 formed in a substantially circular shape at an end opposite to the grip portion 35, and is thinner than the main body portion 32 as shown in the figure. A shaft hole 39 is formed at the center of the roller mounting portion 37, and a roller support pin 41 is inserted into the bearing hole 39 so as to protrude on both sides, and rollers 43 and 45 are mounted on the protruding portions. The That is, as shown in FIG. 6, the rollers 43 and 45 are disposed on both sides of the roller mounting portion 37, and are disposed between the opening walls 17 and 19 of the case 3 in this state. The total thickness of the two rollers 43 and 45 and the roller attachment portion 35 is slightly smaller than the width of the opening 15, and when these are attached to the case 3, there is almost no gap between the opening 15 of the case 3. . The rollers 43 and 45 have the same dimensions, and the outer diameter thereof is slightly larger than the diameter of the roller mounting portion 37. However, the difference is exaggerated in the figure.
[0012]
Reference numeral 51 denotes a joint as a connecting member connected to the valve piece of the drain plug, and FIGS. 7 and 8 show a front view and a partial cross-sectional side view thereof. The joint 51 is formed with a substantially cylindrical main body portion 53 and a joint portion 55 provided below the main portion 53 to which a spindle connected to the valve piece is coupled. A groove 57 having a height slightly larger than the diameter of the rollers 43 and 45 attached to the lever handle 31 is formed slightly above the center of the main body 53 so as to extend in a direction perpendicular to the axial direction of the joint 51. Yes. Further, a bottomed hole 59 for receiving a spring 71 described later is formed at the center of the bottom of the groove. Further, on the front portion of the main body 53 of the joint 51, projecting portions 61 and 63 projecting in the radial direction above and below the groove are formed, and the widths thereof are the inner side surfaces 18 and 20 of the opening walls 17 and 19 of the case 3. Corresponds to the dimension between. The portions adjacent to the grooves 57 of the protrusions 61 and 63 are chamfered as shown in the figure, so that the rollers 43 and 45 can be smoothly moved in and out.
[0013]
A compression spring 71 is received in the hole 59 of the joint 51, and a slide pin 73 having a collar 75 at the rear end is received. Since the spring 71 is disposed between the hole 59 and the flange 75 of the slide pin 73, a force in the direction of pushing out from the hole 59 is always applied to the slide pin 73.
[0014]
FIG. 1 shows a state where the valve piece is in the first position which is the lower limit position. In this state, the lever handle 31 receives a counterclockwise force with respect to the shaft 29 from the spring 71 via the slide pin 73. The rear surface of the main body 32 of the lever handle 31 is positioned in contact with the outer surface of the upper wall 24 of the opening 15 of the case 3. At this time, as shown in FIG. 1, the rollers 43 and 45 are positioned close to the lower edge of the opening 15, while the width of the main body 32 of the lever handle 31, the rollers 43 and 45 and the roller mounting portion. Since the total thickness of 37 is substantially equal to the width of the opening 15 as described above, in this state, the opening 15 is closed by these members. In the subsequent operation, the rollers 43 and 45, the joint 51, the slide pin 73 and the like are not hindered.
[0015]
When the valve piece is moved to the upper limit position, that is, the second position, the lever handle 31 is rotated in the clockwise direction against the force of the spring 71 in FIG. Accordingly, the rollers 43 and 45 enter the inside of the groove 57 of the joint 51 and compress the spring 71 via the slide pin 73. At the same time, the rollers 43 and 45 abut against the upper side surface of the groove 57 and lift the joint 51 upward.
[0016]
FIG. 2 shows a state in which the roller 43 and 45 have just reached the middle position, the rollers 43 and 45 have reached the innermost position, and the spring 71 is in the maximum compressed state. When passing through this position, the force of the spring 71 acts to rotate the lever handle 31 clockwise in the figure, and reaches the state of FIG. In FIG. 3, the upper surface of the joint 51 comes into contact with the inner surface of the top wall of the case 3 and is positioned. In this state, the rollers 43 and 45 are positioned adjacent to the lower edge of the upper wall 24 of the opening 15, and the main body 32 of the lever handle 31 extends obliquely downward, and most of the lower part of the opening Therefore, even if it is kept in this state for a long time, the entry of dust and the like is small. In particular, entry of dust into the groove 57 or the hole 59 of the joint 51 is prevented, and the movement of the slide pin 73 by the rollers 43 and 45 or the contact between the rollers 43 and 45 and the groove 57 is not adversely affected. .
[0017]
Since the rollers 43 and 45 that are rotatably attached to the lever handle 31 are in direct contact with the slide pin 73, when the lever handle is operated, the rollers 43 and 45 and the slide pin 73 are in between. There is no relative movement such as sliding. Further, although slight slippage occurs in the contact between the rollers 43 and 45 and the joint 51, the contact between them becomes a line contact and is extremely smooth. The rollers 43 and 45 always apply an axial force, which is the moving direction, to the joint 51, and the joint 51 moves up and down very smoothly. In addition, since the rollers 43 and 45 are in the groove 57 formed in the joint 51, a force can be applied to the joint at a position close to the center of the joint, which is advantageous for the movement of the joint.
[0018]
【The invention's effect】
As described above, in the present invention, the drain plug can be operated by a simple operation of rotating the lever handle clockwise or counterclockwise. When the neutral point is exceeded, the biasing force by the spring acts, and one position Is held stably. Further, since the roller is used, the operation is smooth and stable when switching. Also, since the roller does not rotate during operation, wear and the like are minimized. Furthermore, since unnecessary force does not act on the joint, it is excellent in durability and the joint is smoothly moved. Furthermore, entry of dust or the like into the case is prevented, and the function is not hindered.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a first state of an apparatus according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view showing a state between first and second intermediate positions.
FIG. 3 is a longitudinal sectional view showing a second state.
FIG. 4 is a front view of the case.
FIG. 5 is a longitudinal sectional view of a case.
FIG. 6 is a side view showing a positional relationship between a lever handle and a roller.
FIG. 7 is a front view of the joint.
FIG. 8 is a partial cross-sectional side view of a joint.
FIG. 9 is a side view showing the drain plug with the handle device attached.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lever handle apparatus 3 Case 11 Space 13 Side wall 15 Opening 17, 19 Open wall 24 Upper wall 31 Lever handle 32 Main body part 37 Roller attaching part 43, 45 Roller 51 Joint 53 Main body part 57 Groove 59 Hole 71 Spring 73 Slide pin

Claims (5)

In the lever handle device for a drain plug that is attached to the upper portion of the outer tube of the drain plug and moves the valve piece of the drain plug up and down, the case is attached to the upper portion of the outer tube and has an opening in the peripheral wall And a lever handle mounted to face the opening of the case so as to be rotatable in a plane extending in the axial direction of the outer tube around a rotation shaft implanted in the case; A connecting member which is mounted so as to be movable in the axial direction of the outer tube and to which the valve piece is connected to a lower end portion thereof, and the connecting member has a bottomed axial direction of the outer tube. A recess having a depth in a direction perpendicular to the slide, a slide pin housed in the recess so as to be movable in the depth direction of the recess, a bottom portion of the recess and the slide in the recess A compression spring disposed between the pin and The rotatably mounted about an axis parallel to the rotating shaft at a position offset from the rotational axis to the lever handle, comprising a contacting roller at the outer end of the slide pin, lever handle device. The lever handle device according to claim 1, wherein the roller is capable of entering the recess of the coupling member. 3. The lever handle device according to claim 2, wherein the recess includes a groove formed to extend in a direction orthogonal to the depth direction and the axial direction of the outer tube, and the roller can enter the groove. The lever handle device. 2. The lever handle device according to claim 1, wherein when the valve piece is moved to a lower limit position, a rear surface of the lever handle abuts against an outer wall surface of the upper portion of the opening, and the roller has a lower edge of the opening. A lever handle device, located close to the part, wherein the opening is substantially closed by the lever handle and the roller. The lever handle device according to claim 1, wherein when the valve piece is moved to an upper limit position, the roller is positioned close to an upper edge of the opening, and the lever handle extends obliquely downward, A lever handle device in which at least a range of the opening corresponding to the recess of the connecting member is substantially closed by the lever handle and the roller.

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