JPH06251683A - Damper - Google Patents

Abstract

PURPOSE:To facilitate assembling work. CONSTITUTION:A device comprises a substrate 1 divided in a plate thickness direction into two of the respective first/second substrates 11, 12 to connect through holes 11a, 12a air-tightly connected, sheets 2, 3 formed respectively with the first/second chambers 2a, 3a in both surfaces of the substrate 1 by covering both end parts of the through holes 11a, 12a and fluid 4 air-tightly sealed so that it can be moved to the other chamber through the through hole of the substrate 1 when the one chamber is pressed. Accordingly in the substrate 1, since the first/second substrates, 11, 12 are separately prepared as that already air-tightly connecting the sheets 2, 3 in a condition that the fluid 11 is infected to the first/second chambers 2a, 3a in the respective one surface, the other fellow surfaces of the substrate are required to be only connected by connecting the through holes 11a, 12a, and further the sheets 2, 3 are finished to be connected to the substrate with no hazardousness of damage to facilitate assembly work.

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 relays and switches.

[0002]

2. Description of the Related Art Generally, a movable member constituting a relay or the like generates sound or vibration at the time of collision, and when the movable member is incorporated into household electric appliances or automobiles, the collision sound or vibration becomes a problem. Therefore, conventionally, a piston interlocking with a movable member is provided to move the fluid in the cylinder to buffer the collision.

However, this device has problems that the device becomes large and that the piston and the cylinder must be fitted with high precision, and in order to solve this problem, the applicant of the present application filed Japanese Patent Application No. 4-103038. In this issue, a damper having the structure shown in FIGS. 6 and 7 is proposed.

[0004] The damper, through the hole substrate A ₁ was formed in the center A, through the holes A ₁ opposite ends overlying the first chamber B ₁ and the second chamber substrate to C ₁ to form each A Sheets B and C that are airtightly joined to each other by ultrasonic welding on both sides, and the first chamber B ₁
And one of the second chamber C ₁ is pressed, the through hole of the substrate A
Fluid D, which is hermetically sealed so that it can be transferred to the other chamber through A ₁ .

[0005]

In the above-mentioned conventional damper, the collision noise can be reduced, and the fitting precision is not required and the size can be reduced as compared with the one using the piston and the cylinder. It will be effective.

However, this damper is used in the first chamber B ₁
And one of the second chamber C ₁ is pressed, the through hole of the substrate A
It is necessary to enclose a suitable amount of fluid D and hermetically bond the sheets B and C to both sides of the substrate A so that they can be moved to the other chamber through A _1. The assembly is performed as shown in FIG. 8, for example. Be seen.

That is, first, an appropriate amount of fluid D having a viscosity such as contact lubricating oil is poured into a sheet C formed by forming a second chamber C ₁ having a hemispherical dome shape in FIG. Then the same figure (b)
As shown in FIG. 5, the sheet C is airtightly joined to one surface of the substrate A by ultrasonic welding or the like so as to cover one end of the through hole A ₁ to form the second chamber C _1, and the hemispherical dome-shaped first One chamber B ₁ is prepared by pouring an appropriate amount of fluid D into a molded sheet B. Then, the airtight around the as shown in FIG. (C), the sheet B is the other side to also ultrasonic welding or the like of the substrate A to form a first chamber B ₁ over the other end of the through hole A ₁ To be joined. At this time, the seat B has a hemispherical dome-shaped opening facing downward,
The fluid D is viscous and will not drip. In addition, as described above, the fluid D flows into the first chamber B ₁ and the second chamber C ₁ so as to be able to move to the other chamber through the through hole A ₁ when pressed in one chamber. Sheet B, which is poured less than the total volume, makes it difficult to handle due to its thin wall while pushing out the excess air that exists in the remaining volume.
Since it is necessary to hermetically bond the other side of A, it is troublesome, and there is also a risk of damaging the bonded sheet C. The damper shown in Fig. 3 (d) is assembled through such troublesome work.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a damper that is easy to assemble.

[0009]

In order to solve the above problems, the damper of the present invention has a substrate having a through hole and chambers formed on both sides of the substrate to cover both ends of the through hole. In a damper comprising a sheet and a fluid that is hermetically sealed so as to be able to move to the other chamber through a through hole of the substrate when pressed in one chamber, the substrate is divided in the plate thickness direction. Each of the plurality of sheets is configured to be airtightly joined through the through holes.

[0010]

According to the damper of the present invention, the substrate is formed with a chamber into which an appropriate amount of fluid is poured, on one surface of each of two of the plurality of substrates divided in the plate thickness direction. The sheets can be prepared separately as already airtightly joined, and thus two substrates that have rigidity and are easy to handle unlike the conventional example are held in, for example, vacuum and the through holes are communicated while degassing. Since it is only necessary to hermetically bond the other surfaces of the substrates to each other, the assembling work becomes easy.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. This damper 10 consists of board 1, seat 2,
It consists of 3 and fluid 4.

The substrate 1 is composed of a first substrate 11 and a second substrate 12, and is made of a resin material and has a through hole 11 in the center thereof.
The first substrate 11 and the second substrate 12 are formed in a square flat plate shape having a and 12a, that is, divided into two in the plate thickness direction.
And the through holes 11a and 12a are communicated with each other to be airtightly joined.

The sheets 2 and 3 are made of, for example, a polyamide resin having a thickness of 25 μm, and each has a hemispherical dome-shaped first chamber 2a.
And the second chamber 3a. And through hole
The first chamber 2a is provided on both sides of the substrate 1 so as to cover both ends of 11a and 12a.
And the second chamber 3a are respectively formed and airtightly joined.

The fluid 4 has a viscosity such as contact lubricating oil, and when one of the first chamber 2a and the second chamber 3a is pressed, it moves through the through holes 11a and 12a to the other chamber. Enclosed to get.

The damper 10 is assembled as follows. First, as shown in FIG. 3 (a), an appropriate amount of fluid 4 is poured into the first chamber 2a and the second chamber 3a of the sheets 2 and 3. At this time, the fluid 4 is moved to the other chamber through the through hole when being pressed in the one chamber.
Pouring less than the total volume of the chamber 2a and the second chamber 3a. Then, as shown in FIG. 3 (b), one surface of the first substrate 11 and the second substrate 12 is formed so that the first chamber 2a and the second chamber 3a are formed so as to cover one ends of the through holes 11a and 12a, respectively. It is airtightly joined by ultrasonic welding.

Next, the above-mentioned first substrate 11 and second substrate 12
Since it has rigidity, it is handled and held in the vacuum chamber 13 so that the other surfaces face each other as shown in FIG. 3 (c). Then, since the fluid 4 is poured in less than the total volume of the first chamber 2a and the second chamber 3a, excess air existing in the remaining volume is deaerated, and in that state, the through holes 11a and 12a.
So that they communicate with each other, the other surfaces are joined together and airtightly joined by ultrasonic welding or the like to assemble the damper 10 of FIG. 3 (d).

A relay using the damper 10 will be described with reference to FIG. In this device, a yoke 71 is fixed to a base 59, and a card 81 is supported by a coil frame 74 on a fixed iron core 73.

First, in the base 59, a partition wall 61 is erected on one side of the center iron core mounting portion 94, and the main contact block is provided outside the partition wall 61.
62 is placed. That is, the fixed contact plate with terminal 52 is fixed to the terminal hole 64b, and the terminal 55 to which the base end of the movable contact plate 51 is fixed is fixed to 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. Further, the auxiliary contact block 63 is provided on the other side of the iron core mounting portion 94.
Are arranged. That is, the terminal 69 in which the base end portions of the auxiliary fixed contact plate 65 with terminals and the movable contact plate 68 are fixed to the step 95
To the terminal holes 64c and 64d, respectively. 66 is a fixed contact and 67 is a movable contact.

The yoke 71 includes a flat plate portion 71b mounted on the iron core mounting portion 94, a connecting piece 71a vertically bent from one end of the flat plate portion 71b, and a flat plate portion 71b from both ends of the other end of the flat plate portion 71b. A pair of yoke pieces 72 bent in the direction and the base end in the central hole of the connecting piece 71a.
73a are connected to each other, and the tip end 75 is composed of a fixed iron core 73 positioned between a pair of yoke pieces 72.

Then, the above-mentioned damper 10 is fixed to the tip 75 of the fixed iron core 73 as shown in FIG. 5, and at this time, the first chamber 2a and the second chamber 3a are both sides of the fixed iron core 73 in the plate thickness direction. It is designed to be able to project from the above by a predetermined size.

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

The shaft 84 at one end of the card 81 of the card block 80
Is rotatably fitted in the shaft hole 79 of the coil frame 74 to support the card 81, and the other end of the card 81 is provided with a pair of contact points located between the tip 75 of the fixed iron core 73 and the yoke piece 72. The pole 82 is provided, and the permanent magnet 83 is interposed between the armatures 82. Also,
Protrusions 89 that press the engaging portion 85 of the movable contact plate 51 and the auxiliary movable contact plate 68 are provided on both sides of the card 81. 90 is a cover. The damper 10 is located between the pair of armatures 82.

In this relay, when the coil 76 is energized through the 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, and the contact between them. A magnetic pole and a suction force of the permanent magnet 83 of the pole 82 act, and the pair of armatures 82 are alternately attracted to the tip 75 of the fixed iron core 73 by the direction of the current flowing to the coil 76 and collide with each other via the damper 10. . This action causes the card 81 to
The movable contact plates 51 and 68 open and close by rotating around 84.

The operating state of the damper 10 will be described with reference to FIG. In the figure (a), one of the pair of armatures 82 has a fixed iron core.
When the coil 76 is energized as described above, the other end of the pair of armatures 82 is the second end of the damper 10 as shown in FIG. Chamber 3a
The fluid 4 in the second chamber 3a moves to the first chamber 2a through the through holes 12a and 11a communicating with the first chamber 2a. Then, the moving speed of the pair of armatures 82 is reduced by the resistance generated when the viscous fluid 4 moves, and when the other piece collides with the tip 75 of the fixed iron core 73, as shown in FIG. The impact of is mitigated. Also, when the coil 76 is energized in the opposite direction, it operates in the opposite manner and returns to the state of FIG.
Also at this time, the damper 10 also reduces the moving speed to reduce the impact.

In the damper 10, as described above, the impact when the armature 82 collides with the tip 75 of the fixed iron core 73 is alleviated, and the collision noise generated at that time can be reduced, and at the same time, the board Since 1 is composed of a first substrate 11 and a second substrate 12 which are divided into two in the plate thickness direction, a first chamber 2a and a second chamber 3a into which an appropriate amount of fluid 4 has been poured are formed on one surface of each. The sheets 2 and 3 can be separately prepared as already air-tightly joined, and thus the two first and second substrates 11 and 12 which have rigidity and are easy to handle unlike the conventional example are placed in the vacuum chamber 13. While holding and deaerating, it is sufficient to communicate the through holes 11a and 12a to hermetically bond the other surfaces of the substrates together,
Moreover, the sheets 2 and 3 are already bonded to the substrate and there is no risk of damage, and the assembly work is facilitated.

In the present embodiment, the substrate 1 is divided into two parts in the plate thickness direction and is composed of the first substrate 11 and the second substrate 12. Third
If a substrate is added and the diameter of the through hole is made smaller than the through holes 11a and 12a of the first substrate 11 and the second substrate 12, the flow rate of the fluid 4 can be controlled by the third substrate.
Since the diameters of the through holes 11a and 12a of the second substrate 12 can be further increased, after the sheets 2 and 3 are airtightly bonded to the first substrate 11 and the second substrate 12, the increased through holes 11a and 12a are formed. From this, the fluid 4 can be poured into the first chamber 2a and the second chamber 3a, and deaeration in the vacuum chamber 13 can be performed more efficiently from the wide opening hole, and the assembling work becomes easier.

[0027]

According to the damper of the present invention, two of the plurality of substrates divided in the plate thickness direction are used,
Sheets having a chamber in which an appropriate amount of fluid has been poured on one side thereof can be separately prepared as already airtightly joined, and thus two substrates having rigidity and easy to handle unlike the conventional example All that is required is to keep the vacuum state and deaeration, and communicate the through holes so that the other surfaces of the substrates are airtightly joined together, which facilitates the assembly work.

[Brief description of drawings]

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

FIG. 2 is a plan view of the above.

FIG. 3 is a partial front sectional view showing the assembling procedure of the above.

FIG. 4 is an exploded perspective view showing a state in which the above damper is used for a relay.

5 is a partial front sectional view showing an operating state of the damper in FIG.

FIG. 6 is a front sectional view showing a conventional example.

FIG. 7 is a plan view of the above.

FIG. 8 is a partial front sectional view showing the assembling procedure of the above.

[Explanation of symbols]

 1 substrate 2 sheet 2a first chamber 3 sheet 3a second chamber 10 damper 11 first substrate 11a through hole 12 second substrate 12a through hole 4 fluid

Claims (1)

[Claims] 1. A substrate having a through hole, a sheet having both ends of the through hole formed with chambers on both sides of the substrate, and when one of the chambers is pressed through the through hole of the substrate to the other. And a fluid that is hermetically sealed so that it can be moved to the chamber of the substrate, wherein the substrate is formed by air-tightly joining each of a plurality of sheets divided in the plate thickness direction through the through holes. The characteristic damper.