JP3089880B2 - Damper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a damper applied to a relay, a switch and the like.

[0002]

2. Description of the Related Art In general, a movable member constituting a relay or the like generates noise and vibration at the time of a collision. When the movable member is incorporated in a household electric appliance or a car, the collision noise or vibration becomes a problem. Therefore, conventionally, a piston interlocking with the movable member is provided to move the fluid in the cylinder to cushion the collision.

However, this method has problems such as an increase in the size of the apparatus and the need for fitting accuracy between the piston and the cylinder. To solve these problems, the applicant of the present application has filed Japanese Patent Application No. Hei 4-103038. Discloses a damper having the configuration shown in FIGS.

[0004] The damper comprises a substrate A formed a circular through-hole A ₁ on both sides of the vertical direction, the through-hole A ₁ of the first chamber to cover the both end portions B ₁ and the second chamber C _1, respectively Substrate to form
A sheet air-tightly bonded around both sides of A by ultrasonic welding etc.
B, C, and a fluid D hermetically sealed so that when one of the first chamber B ₁ and the second chamber C ₁ is pressed, it can move to the other chamber through the through hole A ₁ of the substrate A. , Is provided.

[0005]

In the conventional dampers described above in which [0005] is, when the movable member (not shown) presses the chamber collide with one of the first chamber B ₁ and the second chamber C _1, through the fluid D through hole a ₁ moves to the other chamber, the moving velocity of the fluid D is reduced by the resistance generated when it slower moving speed of the movable member (hereinafter, referred to as damping characteristics which ) In addition to the effect of reducing the collision noise, compared with the one using the piston and the cylinder, there is an effect that the fitting accuracy is not required and the size can be reduced.

[0006] However, the substrate A of this damper is:
A circular through-hole A ₁ are formed on both sides of the vertical direction, resistance generated between the first chamber B ₁ and the second chamber C ₁ through the through hole A ₁ fluid D is when the reciprocating Are always the same and cannot be applied to more complicated devices having movable members whose damping characteristics need to be changed between reciprocations.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to reduce the reciprocating damping characteristics.
An object of the present invention is to provide a damper having a movable member that needs to be changed and applicable to more complicated equipment.

[0008]

According to a first aspect of the present invention, there is provided a damper including a substrate having a through hole formed therein and chambers formed on both sides of the substrate covering both ends of the through hole. A damper comprising: a sheet to be formed; and a fluid hermetically sealed so as to be able to move to the other chamber through the through hole of the substrate when one chamber is pressed, wherein the through hole moves the fluid. The sheet is formed so that the flow velocity is different depending on the direction, and the sheet is formed so that each of the two chambers is formed in a hemispherical dome shape.
It is configured so that the area is different at both ends . The damper according to claim 2, the substrate having a through hole, a sheet covering both ends of the through hole to form chambers on both sides of the substrate, and the through hole of the substrate when one of the chambers is pressed. A fluid hermetically sealed so as to be able to move through to the other chamber.
The sheet is formed so that the flow velocity is different depending on the moving direction of the fluid, the sheet is configured to form the two chambers in a hemispherical dome shape, and the through holes are formed on both sides of the substrate.
It is configured to be inclined with respect to.

[0009]

According to the damper of the first aspect , the movable member collides with one or the other of the chambers formed by the sheets on both surfaces of the substrate to press the chamber, and the air-tightly sealed fluid is applied to the substrate. when moving through the through hole, the through hole, its
Since the opening areas of the two are different at both ends , the flow rates are different depending on the moving direction of the fluid.
Even if the movable member needs to change the damping characteristics in the reciprocating motion, if the speed of the movable member is reduced by appropriately setting the damping characteristics in accordance with the reciprocating motion, the collision sound is similarly mitigated in the reciprocating motion. be able to. Further, since both chambers are formed in a hemispherical dome shape in a streamlined manner, friction between the fluid and the inner surface of the sheet is reduced, and variation in the moving speed due to the friction is reduced. According to the damper of the second aspect , the movable member collides with one or the other of the chambers formed by sheets on both surfaces of the substrate to press the chamber, and the air-sealed fluid is applied to the substrate. When moving through the through hole, the through hole is inclined with respect to both sides of the substrate
By doing so, the flow velocity is formed to be different depending on the moving direction of the fluid, so even if the movable member needs to change the damping characteristic in a reciprocating manner, it is appropriately set so as to have a damping characteristic suitable for each. If the speed of the movable member is reduced, the collision sound can be similarly mitigated in both reciprocations. Further, since both chambers are formed in a hemispherical dome shape in a streamlined manner, friction between the fluid and the inner surface of the sheet is reduced, and variation in the moving speed due to the friction is reduced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. This damper 10 is for the substrate 1, sheet
It consists of a few fluids.

The substrate 1 is formed of a resin material into a rectangular flat plate having through holes 1a having different opening areas at both ends 1b and 1c. That is, the through-hole 1a is formed in a so-called funnel shape in which one end 1b has a large diameter and the other end 1c has a small diameter.

The sheets 2 and 3 are made of, for example, a polyamide resin having a thickness of 25 μm, and cover the both ends 1b and 1c of the through-hole 1a. In order to form, a hermetically bonded to both surfaces of the substrate 1 by heat fusion, and an appropriate amount of viscous fluid 4 such as contact lubricating oil is formed in the space formed by the through hole 1a, the first chamber 2a and the second chamber 3a. It is hermetically sealed.

Next, the operation of the damper 10 will be described. As shown in FIG. 4A, a movable member (not shown)
Collides with and presses the first chamber 2a, the fluid 4 in the first chamber 2a flows into the through hole 1a from one end 1b having a large diameter, and then moves from the other end 1c having a small diameter to the second chamber 3a. As a result, the state shown in FIG. Conversely, FIG.
As shown by an arrow, when the movable member collides with the second chamber 3a and presses it, the fluid 4 in the second chamber 3a flows through the small-diameter other end 1c through the through hole.
After flowing into 1a, it moves from the large-diameter end portion 1b to the first chamber 2a, and returns to the state shown in FIG.

The movable member is the first chamber 2a or the second chamber 2a.
When colliding with 3a, as shown in FIG. 1, the fluid 4 is divided into a fluid 4a flowing directly into the through hole 1a from the opening and a fluid 4b flowing into the through hole 1a after colliding with the flat surface of the substrate 1. .
Depending on the ratio between the fluid 4a and the fluid 4b, the time required until the speed of the movable member becomes lower after collision and the damping characteristic occurs is changed. The ratio of fluid 4a is large and fluid 4b
It has been experimentally confirmed that the smaller the ratio, the longer the time required for the damping characteristic to occur.

Therefore, in such a damper 10, the opening area of the through hole 1a is equal to that of the one end 1b on the side of the first chamber 2a.
The ratio of the fluid 4a is larger when the movable member presses the first chamber 2a side than when the movable member presses the second chamber 3a side because the other end portion 1c of the chamber 3a is formed larger than the other end 1c. The ratio of the fluid 4b becomes smaller, and the time required for the damping characteristic to be generated becomes longer, and therefore, even if the movable member needs to change the damping characteristic in a reciprocating manner, the damping characteristic becomes suitable for each. Through hole 1a in substrate 1
If the speed of the movable member is reduced by appropriately setting the diameters of both end portions 1b and 1c, the collision sound can be similarly reduced in both reciprocations. In addition, both rooms 2a and 3a have a streamlined hemispherical dome shape.
The fluid 4 and the inner surfaces of the sheets 2 and 3
Friction is reduced, and variation in moving speed due to friction is reduced.
Until it has damping characteristics.
Of time required for the operation is reduced.

In order to process a resin substrate 1 having through holes 1a having different diameters at both ends 1b and 1c, a mold which can be opened in the thickness direction may be used. Substrate 1
The through hole 1a may be formed by post-processing, and can be easily processed by any method.

Next, a second embodiment will be described below with reference to FIGS. This damper 10 is the same as that of the first embodiment except that the shape of the through hole 1a of the substrate 1 is different, and the other configuration is the same, and the same members are denoted by the same reference numerals.

The through-hole 1a has the same opening area at both ends 1b and 1c, but has different positions. That is, the one end 1b is located substantially at the center on the first chamber 2a side, and the other end 1c
Are inclined with respect to both surfaces of the substrate 1 so as to be located closer to the peripheral edge of the second chamber 3a.

The operation of the damper 10 will be described with reference to FIG.
As shown by an arrow in (a), when the movable member collides with and presses the first chamber 2a, the fluid 4 in the first chamber 2a flows into the through hole 1a from one end 1b located at the substantially center, and By moving from the other end 1c located near the periphery to the second chamber 3a, FIG.
The state shown in FIG. Conversely, the same figure
As shown by the arrow in (c), when the movable member collides with and presses the second chamber 3a, the fluid 4 in the second chamber 3a flows into the through-hole 1a from the other end 1c located near the peripheral edge and then flows. By moving from one end 1b located at substantially the center to the first chamber 2a, FIG.
The state returns to the state shown in FIG.

Therefore, in such a damper 10, the through hole 1a is formed such that one end 1b of the first chamber 2a is connected to the other end 1c of the second chamber 3a.
Since it is formed so as to be located at the center with respect to both surfaces of the substrate 1, as in the case of the first embodiment, when the movable member presses the first chamber 2 a side, the second The proportion of the fluid 4a is larger and the proportion of the fluid 4b is smaller than when the chamber 3a is pressed, so that the time required for the damping characteristic to be generated is longer, so that the movable member needs to change the damping characteristic in a reciprocating manner. Through holes 1a that are inclined so as to have damping characteristics suitable for each
If the speed of the movable member is reduced by appropriately setting the positions of both end portions 1b and 1c, the collision sound can be similarly mitigated in both reciprocations. The two chambers 2a and 3a have a hemispherical dome shape.
Since it is formed linearly, fluid 4 and the inner surfaces of sheets 2 and 3
Friction decreases, and the movement speed varies due to friction.
The damping characteristic.
And the variation in the time required for the operation is reduced.

Next, a first reference example related to the present invention is shown in FIG.
This will be described below with reference to FIGS. This damper 10
The second embodiment is the same as the first embodiment except that the shape of the through-hole 1a of the substrate 1 is different, and the other components are the same, and the same members are denoted by the same reference numerals.

The substrate 1 has a first through hole 11 having a small diameter and a second through hole 12 having a large diameter as the through holes 1a. As shown in FIG. 13, a first valve cut out in a substantially U-shape so as to open and close the first through hole 11 is provided on one side of the substrate 1.
A flat sheet 13 made of, for example, a 50 μm polyamide resin having a hole 13b formed thereon so as not to cover the first through hole 13a and the second through hole 12 is mounted thereon, and covers the first through hole 11 and the second through hole 12 from above. The sheets 2 in which the first chambers 2a are formed are overlapped and hermetically joined by ultrasonic welding. On the other side of the substrate 1, a second valve 14a cut out in a substantially U-shape so as to open and close the second through hole 12 and a hole 14b so as not to cover the first through hole 11 are formed. A flat sheet 14 made of a polyamide resin is mounted, and a sheet 3 having a second chamber 3a formed thereon is stacked thereon so as to cover the first through hole 11 and the second through hole 12, and an appropriate amount of air or the like is provided. The fluid 4 composed of the above gas is disposed and hermetically joined by ultrasonic welding.

The operation of the damper 10 will be described with reference to FIG.
As shown by an arrow in (a), when the movable member collides with and presses the first chamber 2a, the fluid 4 in the first chamber 2a closes the opening of the first through hole 11 with the first valve 13a. Therefore, by flowing into only the second through hole 12 and pushing and opening the second valve 14a to move to the second chamber 3a, the state shown in FIG. Conversely, when the movable member collides with and presses the second chamber 3a as shown by an arrow in FIG. 3 (c), the fluid 4 in the second chamber 3a causes the opening of the second through hole 12 to pass through the second valve. Because it is closed at 14a,
It flows only into the first through hole 11 and pushes the first valve 13a open to open the first valve 13a.
By moving to the chamber 2a, the state returns to the state shown in FIG.

Therefore, in such a damper 10, the cross-sectional diameter of the flow path of the fluid 4 is larger when the movable member presses the first chamber 2a side than when the movable member presses the second chamber 3a side. Because it is large and the resistance generated during its movement is small, fluid
The degree of the damping characteristic in which the moving speed of 4a is reduced is also reduced, and therefore, even if the movable member needs to change the damping characteristic in a reciprocating manner, the first of the substrate 1 has a damping characteristic suitable for each. If the speed of the movable member is reduced by appropriately setting the diameters of the through-hole 11 and the second through-hole 12, the collision sound can be similarly mitigated in both reciprocation. The two chambers 2a and 3a have a hemispherical dome shape
The friction between fluid 4 and the inner surfaces of sheets 2 and 3
And fluctuation of moving speed due to friction is reduced.
Therefore, it is necessary for damping characteristics to occur.
The variation in the time to perform is reduced.

In the first embodiment and the second embodiment, one through hole is provided in both the moving direction when the movable member presses the first chamber 2a side and the case when the movable member presses the second chamber 3a side. Since the shape of 1a is formed to be funnel-shaped and inclined, the damping characteristics in both moving directions are different from each other with a relative relationship. However, in this reference example , the first through hole 1a is formed as the through hole 1a. Since the two holes 11 and the second through holes 12 are provided, the damping characteristics in both moving directions can be independently set by changing the diameters of the two, without being influenced by each other.

In the present embodiment , two through holes 1a are provided. However, the number of through holes 1a is not limited to two, and more complicated damping characteristics can be set by increasing the number.

Next, a second reference example related to the present invention will be described with reference to FIG.
This will be described below with reference to FIGS. This damper 10
The second embodiment is the same as the first embodiment except that the shape of the through-hole 1a of the substrate 1 is different, and the other components are the same, and the same members are denoted by the same reference numerals.

The substrate 1 has a circular through hole 1a formed on both sides in a vertical direction. As shown in FIG. 18, on one side of the substrate 1, a valve 15a cut out in a substantially U-shape so as to open and close the through hole 1a, and a flow passage smaller than the diameter of the through hole 1a through the valve 15a. For example, 50 μm in which the path hole 15b is formed
A flat sheet 15 made of fluoro rubber is mounted, and a sheet 2 made of, for example, 25 μm fluoro rubber having a first chamber 2a formed thereon so as to cover the through hole 1a is overlaid,
It is hermetically joined by adhesive. A second chamber 3a is formed on the other surface of the substrate 1 so as to cover the through hole 1a.
A sheet 3 made of fluoro rubber of 5 μm is overlaid, and an appropriate amount of a fluid 4 made of, for example, silicon oil is disposed, and air-tightly bonded by adhesion .

The operation of the damper 10 will be described with reference to FIG.
As shown by an arrow in (a), when the movable member collides with and presses the first chamber 2a, the fluid 4 in the first chamber 2a passes through the opening of the through hole 1a.
15a, which is closed by a through hole 1 provided in the valve 15a.
By flowing into the through-hole 1a through the flow path hole 15b smaller than the diameter of a and moving to the second chamber 3a, the state shown in FIG. Conversely, FIG.
As shown by an arrow, when the movable member collides with and presses the second chamber 3a, the fluid 4 in the second chamber 3a pushes and opens the valve 15a through the through-hole 1a to move to the first chamber 2a. The state returns to the state shown in FIG.

Therefore, in such a damper 10, the cross-sectional diameter of the flow path of the fluid 4 is larger when the movable member presses the first chamber 2a side than when the movable member presses the second chamber 3a side. Because it is small and the resistance generated during its movement is large, fluid
4a, the degree of the damping characteristic in which the moving speed is reduced also increases, and therefore, even if the movable member needs to change the damping characteristic in a reciprocating manner, the through-hole of the substrate 1 has a damping characteristic suitable for each. 1a and distribution channel hole
If the speed of the movable member is reduced by appropriately setting the hole diameter of the hole 15b, the collision sound can be similarly mitigated in both reciprocation.
The two chambers 2a and 3a are formed in a streamlined shape with a hemispherical dome shape.
Friction between fluid 4 and the inner surfaces of sheets 2 and 3
Disappears, and the variation in moving speed due to friction is reduced
Therefore, it is necessary for damping characteristics to occur.
Time variations are reduced.

In the first reference example described above, two first
Although it is necessary to provide the first valve 13a and the second valve 14a in each of the through hole 11 and the second through hole 12, there is also an effect that the assembly can be performed by providing only one valve 15a in the through hole 1a. .

Next, a relay using the damper 10 of the second embodiment will be described with reference to FIG. This one is based
A yoke 71 is fixed to 59, and a card 81 is supported by a coil frame 74 on a fixed iron core 73.

First, the base 59 has a partition wall 61 erected on one side of a central iron core mounting portion 94, and a main contact block outside the partition wall 61.
62 is arranged. That is, the fixed contact plate with terminal 52 is fixed in the terminal hole 64b, and the terminal 55 to which the base end of the movable contact plate 51 is fixed is fixed in the terminal hole 64a. 53 is a movable contact, 54 and 58 are magnetic materials, 56 is a braided conductor, and 57 is a fixed contact. An auxiliary contact block 63 is provided on the other side of the iron core mounting portion 94.
Has been arranged. That is, the terminal 69 in which the base end portions of the fixed contact plate 65 with auxiliary terminals and the movable contact plate 68 are fixed to the step portion 95.
Are respectively penetrated into the terminal holes 64c and 64d. 66 is a fixed contact, 67 is a movable contact.

The yoke 71 has a flat plate portion 71b mounted on the iron core mounting portion 94, a connecting piece 71a bent perpendicularly from one end of the flat plate portion 71b, and the same from both sides of the other end of the flat plate portion 71b. A pair of yoke pieces 72 bent in the direction and base ends of the center holes of the connecting pieces 71a.
The fixed iron core 73 is connected to a pair of yoke pieces 72 and has a tip 75.

As shown in FIG. 20, the above-described damper 10 is fixed to the tip end 75 of the fixed iron core 73. At this time, the first chamber 2a and the second chamber 3a are From a predetermined dimension.

The coil frame 74 of the coil block 60 is set on the flat plate portion 71b of the yoke 71, and the fixed iron core 73 is fixed to the coil frame.
The base end 73a is connected to the center hole of the connecting piece 71a. The coil frame 74 has a coil 76 wound around the outer periphery, and has a common and a pair of coil terminals 78 on one flange 77 of the coil frame 74 and a convex portion of the flange 77.
A shaft hole 79 is formed in 77a.

A shaft 84 at one end of the card 81 of the card block 80
Is rotatably fitted into a shaft hole 79 of the coil frame 74 to support the card 81, and a pair of contacts located at the other end of the card 81 between the tip 75 of the fixed iron core 73 and the yoke piece 72. A pole 82 is provided, and a permanent magnet 83 is interposed between the armatures 82. Also,
On both sides of the card 81, there are provided projections 89 for pressing the engaging portions 85 of the movable contact plate 51 and the auxiliary movable contact plate 68. 90 is a cover. Note that the damper 10 is located between the pair of armatures 82.

In this relay, when a coil 76 is energized through a coil terminal 78, a magnetic flux flows through the fixed iron core 73 to the yoke 71, and the tip 75 of the fixed iron core 73 and the yoke piece 72 have different magnetic poles. The magnetic poles of the poles 82 by the permanent magnets 83 and the attraction force act, whereby the pair of armatures 82 are alternately attracted to the tip 75 of the fixed iron core 73 by the direction of current supply to the coil 76, and collide via the damper 10. . With this operation, the card 81 is
It rotates about 84 and drives the movable contact plates 51 and 68 to open and close the contacts.

In the operation of opening and closing the contacts as described above, in the direction in which the contacts are turned on (SET direction), it is necessary to operate the damper after the contacts are turned on in order to secure the electrical life of the contacts. Also, since a resistance force is generated on the movable member (the armature 82) by the spring load of the contact block, the degree of the damping characteristic may be small. In the direction in which the contacts are separated (RESET direction), there is no restriction for ensuring the electrical life of the contacts, but the degree of damping characteristics is increased because no resistance is applied to the movable member due to the spring load. There is a need.

The damper 10 of the second embodiment can be used to set the damping characteristics under such conditions. FIG. 20 shows the operation state, and FIG. 21 (SET direction) and FIG.
ESET direction). FIG. 20 (a) shows a state in which the movable member (one of a pair of armatures 82) is attracted and held by the distal end 75 of the fixed iron core 73. When the coil 76 is energized in the SET direction, FIG. b) As shown in Fig.
The fluid 4 in the second chamber 3a passes through the through hole 1a, pushes and opens the valve 15a, and moves to the first chamber 2a of the damper. The waiting time until it starts to take effect is long, and the contacts are turned on during that time. After that, the damper works until the state of FIG. 20 (c) where the displacement of the movable member ends, but the displacement during that time is small.

Conversely, when the coil 76 is energized in the RESET direction in the state shown in FIG.
As shown in FIG. 3 (d), the first
Although the fluid 4 in the chamber 2a closes the opening of the through hole 1a with the valve 15a, the fluid 4 moves to the second chamber 3a through the flow path hole 15b smaller than the diameter of the through hole 1a, and collides with the damper. After waiting, the waiting time until the damper starts to work is small,
The displacement amount is large while the damper is effective up to the state of FIG. 20 (a) where the displacement of the movable member ends.

In this embodiment , the damper 10 is applied to a relay. However, the present invention is not limited to this. The same effect can be obtained by using this for a problematic one.

[0043]

The damper of claim 1, wherein according to the present invention is the chamber to press the movable member collides with the one or the other chambers formed respectively with a sheet on both sides of the substrate, hermetically sealed fluid is a substrate when moving through the through hole, the through hole, its
Since the opening areas of the two are different at both ends , the flow rates are different depending on the moving direction of the fluid.
Even if the movable member needs to change the damping characteristics in the reciprocating motion, if the speed of the movable member is reduced by appropriately setting the damping characteristics in accordance with the reciprocating motion, the collision sound is similarly mitigated in the reciprocating motion. be able to. Further, since both chambers are formed in a streamlined shape with a hemispherical dome shape, friction between the fluid and the inner surface of the sheet is reduced, and variation in the moving speed due to the friction is reduced, so that it is necessary until damping characteristics are generated. Time variations are reduced. In the damper according to the second aspect , the movable member collides with one or the other of the chambers formed by sheets on both surfaces of the substrate to press the chamber, and the air-tightly sealed fluid passes through the through hole of the substrate. when moving, the through hole,
By being inclined with respect to both sides of the substrate, it is formed so that the flow velocity is different depending on the moving direction of the fluid. If the speed of the movable member is reduced by appropriately setting it to have the damping characteristic,
The collision sound can be similarly mitigated in both round trips. Also,
Since both chambers are formed in a streamlined shape having a hemispherical dome shape, friction between the fluid and the inner surface of the sheet is reduced, and variation in the moving speed due to the friction is reduced.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing a first embodiment of the present invention.

FIG. 2 is a top view of the same.

FIG. 3 is a bottom view of the above.

FIG. 4 is a front sectional view showing an operation state of the above.

FIG. 5 is a front sectional view showing a second embodiment of the present invention.

FIG. 6 is a top view of the above.

FIG. 7 is a bottom view of the above.

FIG. 8 is a front sectional view showing an operation state of the above.

FIG. 9 is a front sectional view showing a first reference example related to the present invention .

FIG. 10 is a top view of the above.

FIG. 11 is a bottom view of the above.

FIG. 12 is a front sectional view showing the operation state of the above.

FIG. 13 is an exploded perspective view of the same.

FIG. 14 is a front sectional view showing a second reference example related to the present invention .

FIG. 15 is a top view of the above.

FIG. 16 is a bottom view of the above.

FIG. 17 is a front sectional view showing the operation state of the above.

FIG. 18 is an exploded perspective view of the above.

FIG. 19 is an exploded perspective view showing an example in which the above damper is used for a relay.

20 is a front sectional view showing an operation state of a main part in FIG. 19;

FIG. 21 is a diagram illustrating damping characteristics at the time of SET operation in FIG. 20;

FIG. 22 is a diagram illustrating damping characteristics during the RESET operation in FIG. 20;

FIG. 23 is a front sectional view showing a conventional example.

FIG. 24 is a top view of the above.

[Explanation of symbols]

 1 Board 1a Through hole 1b One end 1c Other end 2 Sheet 2a First chamber 3 Sheet 3a Second chamber 4 Fluid 10 Damper 13a Valve 14a Valve 15a Valve 15b Flow path

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01H 3/60 H01H 50/30

Claims (2)

(57) [Claims] 1. A substrate having a through-hole formed therein, a sheet covering both ends of the through-hole to form chambers on both sides of the substrate, and one of the chambers is pressed through the through-hole of the substrate when the other is pressed. And a fluid hermetically sealed so as to be able to move to the chamber, wherein the through hole is formed so that the flow velocity is different depending on the moving direction of the fluid, and the sheet is provided for each of the two chambers. A damper characterized by being formed in a hemispherical dome shape, wherein the through holes are formed so that the opening areas thereof are different at both ends. 2. A substrate having a through-hole formed therein, a sheet covering both ends of the through-hole to form chambers on both sides of the substrate, and one of the chambers is pushed through the through-hole of the substrate when the other chamber is pressed. And a fluid hermetically sealed so as to be able to move to the chamber, wherein the through hole is formed so that the flow velocity is different depending on the moving direction of the fluid, and the sheet is provided for each of the two chambers. A damper characterized by being formed in a hemispherical dome shape, wherein the through hole is formed to be inclined with respect to both surfaces of the substrate.