JPH09280290A - Rotary damper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary damper capable of controlling the movement of two objectives by fitting one rotary damper even in a case of two objectives to be controlled such as a toilet seat and a toilet lid of a Western-style toilet, and capable of reducing the installation space compared with the conventional one. SOLUTION: A rotary damper 1 is provided with a body case 2 provided with a bulkhead part 21 whose inner part is divided into two in the axial direction, and two rotary shafts 3, 4 which are continuously arranged in the axial direction with the bulkhead pat 21 as a boundary and arranged in a concentric condition. A pair of two projected walls which are projected in the circumferential direction with the prescribed intervals and have a liquid passage in which the viscous liquid filled in two spaces which are divided into two by the body case 2, the rotary shafts 3, 4 and the bulkhead part 21 are provided on the outer surface of the rotary shaft. A movable valve 5 in which the outer surface is brought into slidable contact with the inner surface of the body case 2, the liquid passage of a pair of two projected walls provided on the rotary shafts 3, 4 is closed when the rotary shafts 3, 4 are turned in one direction, and the liquid passage is opened when the rotary shafts are turned otherwise, is arranged between a pair of two projected walls.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary damper suitable when there are two braking objects such as a toilet seat or a toilet lid of a Western-style toilet.

[0002]

2. Description of the Prior Art Toilet seats and toilet lids for western-style toilets are supported at their rotation bases via spindles with respect to the upper part of the toilet body.
The other end is a free end and is provided so as to be vertically rotatable within a rotation angle range of approximately 0 degrees to approximately 120 degrees. Therefore, when closing a toilet seat or toilet lid of a Western-style toilet, unless it is closed with a hand to the end, it may collide at the final point of the closing rotation, generate a loud impact noise, and cause damage. .

For this reason, recently, various rotary dampers that utilize the viscous resistance of liquid or frictional resistance are connected to the support shafts of the toilet seat and the toilet lid, and the toilet seat and the toilet lid are closed. Western-style toilets that delay motion are available on the market.

[0004]

However, in all of the above-mentioned ones, the rotary damper for the toilet seat and the rotary damper for the toilet lid are connected to their respective support shafts, that is, two rotary dampers are provided. Therefore, it was difficult to secure the installation space. Particularly, in recent years, high-performance western-style toilets are equipped with, for example, a hot water cleaning device, but there is a problem that the installation space for these accessories is limited by the installation space of the rotary damper. It was

The present invention has been made in order to solve the above problems, and even if there are two braking objects such as a toilet seat and a toilet lid of a Western-style toilet, if one is attached, the movement of both will occur. It is an object of the present invention to provide a rotary damper that can control the installation space and can make the installation space smaller than before.

[0006]

In order to achieve the above object, a rotary damper according to the present invention has a main body case provided with a partition wall portion which divides the inside into two in the axial direction, and an axial center direction with the partition wall portion as a boundary. 2 arranged side by side in a concentric state
Two rotating shafts are provided on the outer surface of each rotating shaft so as to project at predetermined intervals in the circumferential direction, and in two gaps formed by being divided into two by the main body case, the rotating shaft, and the partition wall portion. Two pairs of projecting walls each having a liquid passage for allowing the filled viscous liquid to pass through are provided between the pair of projecting walls, the outer surface of which is in sliding contact with the inner surface of the main body case, and each of the rotating shafts is A movable valve capable of closing the liquid passages of the pair of projecting walls provided on each of the rotating shafts when rotating to, and opening the liquid passages when rotating to the other. Characterize.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail based on embodiments shown in the drawings. In the figure, 1
Indicates a rotary damper according to the present embodiment, which is configured to have a main body case 2, a first rotary shaft 3, a second rotary shaft 4, and a movable valve 5.

The main body case 2 is formed in a substantially cylindrical shape, and a partition wall portion 21 that divides the inside thereof into two in the axial direction is provided in a substantially annular shape so as to project inward. Further, in the present embodiment, two partition walls 22 and 23, which partition the inside of the main body case 2 in the circumferential direction, are provided so as to project inward at a position facing each other and along the axial direction ( See FIG. 2).
The partition walls 22 and 23 are formed by an inner surface of the main body case 2 and an outer surface of each rotating shaft 3 by projecting walls 32, 33, 42 and 43 protruding from the rotating shafts 3 and 4, which will be described later. Two
The gap partitioned into two in the axial direction by 1 is further partitioned in the circumferential direction to form a liquid chamber.
The number of sets 33, 42, 43 and the number of movable valves 5 provided are the same as the number of partition walls 22, 23 provided. In this embodiment, the two partition walls 22 and 23 are provided as described above, but the number may be one.

Further, the partition wall 21 formed in the main body case 2 is provided with an injection hole 24 for the viscous liquid.
The injection hole 24 is formed by the main body case 2 and the rotary shaft 3 in which only one inlet 24a is opened on the outer surface of the main body case 2 and outlets 24b, 24c are axially divided into two by the partition wall portion 21. It is formed so as to face each gap. As a result, the viscous liquid can be spread to any of the gaps only by injecting the viscous liquid from one inlet 24a. However, the number of the injection holes 24 themselves having one inlet 24a and two outlets 24b and 24c is not limited. Reference numeral 25 is a screw that closes the injection hole 24 after the viscous liquid is injected.

The first rotating shaft 3 has a substantially cylindrical rotating shaft main body 31 and a projecting wall 3 protruding from the outer surface of the rotating shaft main body 31.
2 and 33, and a joint pipe 34 loaded in the substantially cylindrical rotating shaft main body 31. More specifically, 2
As shown in FIG. 2, the pair of projecting walls 32 and 33 are radially projected at predetermined intervals in the circumferential direction, and
Liquid passages 32a and 33a are formed in each case (see FIGS. 4 and 6). The shapes and positions of the liquid passages 32a and 33a are not limited, but are determined by the shape and position of the liquid passage formed in the movable valve 5 described later, the direction in which the braking force is exerted, and the like. In the present embodiment, FIGS.
Since the braking force works when rotated in the upper X direction, first, the one protruding wall 32 and the other protruding wall 33 are
The liquid passages 32a and 33a are formed by partially cutting out from the outer surface side at positions not facing each other, and
The movable valve 5, which will be described later, communicates with the liquid passage 33a of the other protruding wall 33 when it comes into contact with the protruding wall 32 or 33, but does not communicate with the liquid passage 32a of the one protruding wall 32. A liquid passage 51 is formed from the inner surface side (see FIGS. 4 to 6).

On the surface of the rotary shaft main body 31,
In the present embodiment, two pairs of two protruding walls 3 are provided.
A choke groove 31a, which functions as an orifice, is formed between 2 and 33 so as to straddle the partition walls 22 and 23 of the main body case 2 located therebetween (FIG. 2).
(A)). The choke groove 31a is formed so as to gradually become shallower in the direction of the arrow Y in FIG. 2 so that the braking force gradually increases.

The joint pipe 34 is provided such that one end 34a thereof is projected outward and is connected to a support shaft of a toilet seat or a valve lid, and is provided so as to rotate together with the rotary shaft main body 31. . Rotating shaft body 31 and joint pipe 34
The method of rotating and together is not limited at all, and both may be fixed by screws or the like, and the hollow portion of the rotary shaft main body 31 is formed into a flat shape as in the present embodiment, and
The joint pipe 34 may also be formed in a flat shape so as to be fitted therein, so as not to rotate idly. Further, the rotary shaft main body 31 and the joint pipe 34 can be integrally formed.

The second rotary shaft 4 is similar to the first rotary shaft 3 in that the rotary shaft main body 41 having a flat hollow portion and 2
A flat plate portion 44 having a pair of projecting walls 42, 43 and fitted at one end into a flat hollow portion of the rotary shaft main body portion 41.
a and has a joint pipe 34 of the first rotary shaft 3
Joint shaft 44 formed with a diameter smaller than the inner diameter of
Is configured. A choke groove 41a that functions as an orifice is provided on the peripheral surface of the rotary shaft main body 41, similarly to the rotary shaft main body 31 of the first rotary shaft 3 described above (see FIG. 2B). .

The first rotary shaft 3 and the second rotary shaft 4 face the rotary shaft main bodies 31, 41 of the rotary shafts 3, 4 with the partition wall 21 of the main body case 2 as a boundary. Put the end walls adjacent to each other so that the axes match in the body case 2.
That is, they are arranged side by side in a concentric state. Further, the joint shaft 44 of the second rotating shaft 4 passes through the hollow portion of the joint pipe 34 of the first rotating shaft 3 so that the other end 44 b projects outward more than the one end 34 a of the joint pipe 34. It is provided (see FIGS. 1 and 3).

The movable valve 5 includes two rotary shafts 3 and 4 described above.
It is loaded between the pair of protruding walls 32 and 33 and between the protruding walls 42 and 43, respectively. Projection wall 32, 33 or 42, 43
Are provided so as to radially protrude at predetermined intervals, the movable valve 5 is formed in a substantially fan-shaped cross section as shown in FIG. 5, and the inner surface thereof slides on the outer surfaces of the rotary shaft main bodies 31, 41. The outer surface is in contact with the inner surface of the main body case 2 so as to be in sliding contact therewith. Further, the length in the circumferential direction is slightly smaller than the distance between the pair of protruding walls 32, 33 or 42, 43 so that they can be loaded with play. As described above, the groove serving as the liquid passage 51 is formed on the inner surface side.

When the rotary damper 1 of the present embodiment having such a structure is applied to, for example, a Western-style toilet, the joint pipe 34 of the first rotary shaft 3 is used as a spindle of a toilet lid, for example, and the second rotary shaft is used. The John Into shaft 44 of No. 4 is used, for example, by connecting it to the support shaft of the toilet seat.

First, it is assumed that both the toilet lid and the toilet seat are in the closed state. In this state, for example, the positions of the projecting walls 32 and 33 of the first rotary shaft 3 are such that the other projecting wall 33 is in contact with the partition walls 22 and 23 of FIG. 2, and the toilet lid is lifted to open. And the first rotating shaft 3 including the joint pipe 34 rotates in the Y direction, and the viscous liquid is formed into a pair of two protruding walls 32,
After passing through the liquid passage 32 of the one protruding wall 32 in an attempt to flow from the one liquid chamber 36 formed at the boundary 33 into the other liquid chamber 37, the movable valve 5 is moved to the inner surface of the other protruding wall 33. Press down. Since the formation positions of the liquid passage 51 of the movable valve 5 and the liquid passage 33a of the other protruding wall 33 are in the above-described relationship, even if the movable valve 5 is pressed against the other protruding wall 33, these two liquid passages 33a and 51 are in communication. Moreover, as a result of the movable valve 5 being pressed against the inner surface of the other protruding wall 33, a gap is created between the inner surface of the one protruding wall 32 and the movable valve 5 (see FIG. 6). Therefore, the viscous liquid smoothly moves from one liquid chamber 36 formed with the pair of projecting walls 32 and 33 as a boundary to the other liquid chamber 37 as shown by an arrow in FIG. Therefore, the opening operation of the toilet lid is smoothly performed.

On the other hand, when the toilet seat is biased downward to close the toilet lid from the open state, the first rotating shaft 3 including the joint pipe 34 rotates in the X direction in FIG. The liquid tries to flow from the other liquid chamber 37 into the one liquid chamber 36. As a result, the viscous liquid passes through the liquid passage 33a of the other protruding wall 33 and then moves the movable valve 5 to the one protruding wall 3a.
Press on the inner surface of 2. As described above, the position where the liquid passage 51 of the movable valve 5 is formed is set to the liquid passage 3 of the one protruding wall 32.
Since it is different from the formation position of 2a, one liquid passage 32a is closed. For this reason, the viscous liquid cannot move through the liquid passage 32a of the one protruding wall 32, flows mainly in the direction of the arrow X through the choke groove 31a that functions as an orifice, and separates the other liquid chamber 37 from the partition walls 22, 2
It flows into one of the liquid chambers 36 that are adjacent to each other with 3 in between. A slight amount of viscous liquid also flows in the direction of the arrow Y through an extremely small gap between the outer surface of the movable valve 5 and the outer surfaces of the protruding walls 32 and 33 and the main body case 2, and the viscous liquid is adjacent to the protruding walls 32 and 33. It also flows into one of the liquid chambers 36 that meet. Therefore, since the viscous liquid mainly moves only through the orifice, the resistance increases, the first rotating shaft 3 rotates slowly, and at the same time, the closing operation of the toilet lid becomes slow.

When the toilet seat is opened or closed, the second rotary shaft 4 operates in the same manner as the first rotary shaft 3 via the joint shaft 44 connected to the support shaft of the toilet seat. As a result, the closing motion of the toilet seat can be delayed.

[0021]

Since the rotary damper of the present invention has two rotating shafts that operate independently in one main body case, the object to be braked is two such as a toilet seat or a toilet lid of a Western-style toilet. Even if there is one, it is possible to control the movement of both by installing one, and it is possible to make the installation space of the rotary damper smaller than before.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a rotary damper according to the present invention.

FIG. 2A is a view taken along the line AA of FIG. 1, and FIG.
FIG. 2 is a view taken along the line BB of FIG.

FIG. 3 is a diagram for explaining an arrangement state of a joint pipe and a joint shaft.

FIG. 4 is a diagram showing an arrangement relationship between a protruding wall and a movable valve.

FIG. 5 is a perspective view showing the shape of a movable valve.

FIG. 6 is a diagram schematically showing how a viscous liquid flows when rotated in a direction in which a braking force is not exerted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 rotary damper 2 main body case 21 partition wall part 3 first rotary shaft 4 second rotary shaft 5 movable valve

Claims (3)

[Claims] 1. A main body case provided with a partition wall section that divides the inside into two in the axial direction, and two rotary shafts arranged side by side in the axial direction with the partition wall section as a boundary and arranged concentrically. And two gaps that are formed on the outer surface of each rotary shaft at a predetermined interval in the circumferential direction and are divided into two by the main body case, the rotary shaft, and the partition wall. 2 with liquid passage for passing viscous liquid
A pair of projecting walls and a pair of projecting walls, each of which is provided between each pair of projecting walls, has an outer surface in sliding contact with the inner surface of the main body case, and is provided on each rotating shaft when each rotating shaft rotates in one direction. A rotary damper, comprising: a movable valve that closes the liquid passages of the pair of projecting walls and can open the liquid passages when rotating to the other. 2. An injection hole for the viscous liquid is formed so as to face one inlet, which is opened to the outer surface of the partition wall, and two openings which are separated from the middle, and which respectively face the two gaps partitioned by the partition wall. The rotary damper according to claim 1, further comprising an outlet. 3. The main body case has a plurality of partition walls for partitioning the inside in the circumferential direction, and each rotating shaft has a pair of two protruding walls and a movable valve, one set for each partition wall. The rotary damper according to claim 1, wherein the rotary damper is provided.