JPH07296664A - Damper - Google Patents

Abstract

PURPOSE:To provide a damper to have high airtight reliability by a method wherein a joining member formed of the same kind of a material as that of a base sheet is arranged at an airtight joint between a sheet made of rubber and a base plate made of resin, in a damper form a relay. CONSTITUTION:A square plate-form base plate 1 made of resin having a through-hole 1a formed in a central part is covered with spherical dome-form sheets 2 and 3 formed of a resilient material, such as silicone rubber, formed in a two-stage in cross section to form first and second chambers 2a and 3a. The chambers 2a and 3a are filled in an airtight manner with fluid 4, such as contact lubricating oil, having viscosity which is moved through a through- hole 1a to one chamber by pressing the other chamber. In this case, a joint member 5 formed of the same kind of a material as that of the base plate 1 is adhered to the peripheral edges 2b and 3b of the sheets 2 and 3 and the joining member 5 is joined in an airtight state with the base plate 1 by ultrasonic welding. This constitution provides a damper which prevents leakage of the fluid 4 and has high airtight reliability.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, as this type of damper, there is one shown in FIG. This is a resin substrate A having a through hole A1 and a substrate A that covers both ends of the through hole A1.
Rubber sheets B, which form chambers B1 and C1 on both sides of
C and one of chambers B1 or C1 is pressed through the through hole of substrate A
A fluid D hermetically sealed so that it can move to the other chamber C1 or B1 through A1, and a sandwiching member E that sandwiches the peripheral edges B2, C2 of the sheets B, C between the substrate A. Is configured.

[0003]

In such a conventional damper, the pressing member F constituting the relay or the like is provided in one chamber.
When B1 and C1 are pressed, the fluid D moves to the other chamber C1 or B1 through the through hole A1 of the substrate A, and the resistance at the time of the movement can reduce the collision speed and impact force of the pressing member F, and Since the fluid D is hermetically sealed by the sheets B and C, the structure is simple and the external dimensions are small without the need for a sealing material, and the collision noise and vibration of household electric appliances and automobiles are minimized. It is suitable for use in things that need to be made small.

Moreover, since the peripheral portions B2, C2 of the sheets B, C are sandwiched between the substrates A by the sandwiching member E, the chambers B1, C
Even if it is difficult for the fluid D enclosed in 1 to intervene between the sheets B, C and the substrate A to bond them,
E and the substrate A can be easily hermetically joined by ultrasonic welding or the like.

However, in such a conventional device, when one chamber B1 or C1 is pressed, if a pressure greater than the holding force between the holding member E and the substrate A is applied to the holding member E, the holding member E Airtightness with substrate A is no longer maintained and fluid D
Will leak out of rooms B1 and C1. The leaked fluid D fills the space between the pressure member F and the damper, such as a relay, causing malfunction of the pressure member F, or when the leaked fluid D is scattered, If it goes around to the contact part, contact failure may occur.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a damper having high airtightness and reliability.

[0007]

In order to solve the above-mentioned problems, according to a first aspect of the present invention, a resin substrate having a through hole is formed, and both ends of the through hole are covered to cover both surfaces of the substrate. In a damper provided with a rubber sheet forming each chamber, 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,
The sheet is configured such that a joining member made of the same kind of material as the substrate is provided in an airtight joining portion with the substrate.

According to a second aspect of the present invention, in the first aspect, the joining member is formed integrally with the sheet.

According to a third aspect of the present invention, a substrate having a through hole, a rubber sheet for covering both ends of the through hole to form chambers on both surfaces of the substrate, and one chamber are pressed. And a fluid that is hermetically sealed so as to be able to move to the other chamber through the through hole of the substrate, and a clamping portion that hermetically clamps the peripheral edge portion of the sheet is integrated with the substrate. It has a specially provided structure.

[0010]

According to the first aspect of the present invention, the sheet is not sandwiched by the sandwiching member, which is a separate member, as in the prior art, but the peripheral portion of the sheet is provided in the airtight joint portion with the substrate. The bonding member formed of the same kind of material is directly and airtightly and strongly bonded to the substrate by ultrasonic welding or the like.

According to the second aspect, since the joining member is integrally formed with the sheet, the number of members can be reduced.

According to the third aspect, the sheet is
Unlike the conventional example, the peripheral edge portion is not sandwiched by a sandwiching member which is a separate member, but the peripheral edge portion is hermetically sandwiched and joined to the sandwiching portion integrally provided on the substrate.

[0013]

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 a board 1, sheet
2, 3, fluid 4, and joining member 5.

The substrate 1 is formed of a resin material such as PBT or ABS into a square flat plate having a through hole 1a in the center.

As shown in FIG. 1, the sheets 2 and 3 are made of an elastic material such as silicon rubber and are formed into a hemispherical dome shape having a two-stage cross-section toward the substrate 1. The joining member 5 is joined to 3b by adhesion or the like. In addition, the sheets 2 and 3 cover the both ends of the through hole 1a and enclose an appropriate amount of a viscous fluid 4 such as contact lubricating oil on both surfaces of the substrate 1 to form a first chamber 2a and a second chamber 3a, respectively. The fluid 4 is sealed by forming and joining the joining member 5 and the substrate 1 in an airtight manner by ultrasonic welding.

The joining member 5 is made of the same resin material as the substrate 1 and is formed into a disk shape. Also, the joining member 5 is
A through hole 5a having a diameter equal to the inner diameter of the first chamber 2a and the second chamber 3a is provided in the center thereof, and circulates along the outer peripheral edge of the one surface 5b and at a predetermined height from the one surface 5b. A projecting portion 5c that is projected is provided. And the joining member 5
As described above, the inner peripheral edge of the other surface 5d is joined to the peripheral edge portions 2b and 3b of the sheets 2 and 3 by adhesion or the like.

Next, ultrasonic welding of the joining member 5 and the substrate 1 will be described. As shown in FIG. 2A, the joining member
When the protruding portion 5c of 5 and the substrate 1 are brought into contact with each other and the protruding portion 5c of the joining member 5 and the contact portion 1b of the substrate 1 with which the protruding portion 5b abut are ultrasonically welded, the energy of ultrasonic welding is applied to the protruding portion 5c. Are concentrated and the tip is melted, and the protruding portion 5c and the abutting portion 1b of the substrate 1 are joined to each other so that welding can be performed in a short time even with relatively small energy. When the process proceeds to 5b, the energy of ultrasonic welding is dispersed and is no longer strong enough to be melted. Therefore, as shown in FIG. 6B, the melting is stopped and the melt size for welding can be controlled.

Next, a relay 20 using the damper 10 will be briefly described with reference to FIG. This relay 20
Includes a damper 10, an electromagnet device 11, pressing portions 12a and 12b, and a contact portion 13. Specifically, the electromagnet device 11
Includes a coil bobbin 11a, a coil 11b, a fixed iron core (not shown), a yoke 11c, an armature (not shown), a permanent magnet (not shown), and a movable frame 11d. Has been done. The coil bobbin 11a has a coil 11b
Is wound, the fixed iron core penetrates the winding body of the coil bobbin 11a, and one end of the protruding iron serves as a magnetic pole surface. The yoke 11c has one end serving as a magnetic pole surface facing the magnetic pole surface of the fixed iron core, and the other end coupled to the other end of the fixed iron core. The armature is located between the fixed iron core and the magnetic pole surface of the yoke 11c, and is attracted and separated from the magnetic pole surface by controlling the excitation of the coil 11b. Since the movable frame 11d is rotatably disposed on the yoke 11c while holding the armature and the permanent magnet, it responds to the operation of the armature, and the pressing portions 12a and 12b provided on the movable frame 11d are contact points. A pressing operation is performed so as to bring the parts 13 into and out of contact with each other.

Next, the operation of the damper 10 will be described with reference to the example shown in FIG. FIG. 5A shows a state in which one pressing portion 12a is in contact with one first chamber 2a of the damper. When the coil 11b is energized here, the other pressing portion 12a is pressed as shown in FIG. 5B. The portion 12b collides against the other second chamber 3a of the damper 10 and presses it, and as shown in FIG. 2C, the fluid 4 in the second chamber 3a passes through the through hole 1a and reaches one of the first chambers 2a. Moving. Then, the moving speeds of the pressing portions 12a and 12b are reduced by the resistance generated when the viscous fluid 4 moves, and the impact when the armature collides with the fixed iron core or the magnetic pole surface of the yoke 11c is mitigated. Also, when the coil 11b is energized in the opposite direction, it operates in reverse to the above,
After returning to the state of (a) in the figure, the armature is also fixed by the damper 10 at this time.
The impact at the time of colliding with the magnetic pole surface of is reduced.

In this damper 10, the seats 2 and 3 are
Unlike the conventional example, the peripheral members 2b and 3b are not sandwiched by the sandwiching member which is a separate member, but are provided at the airtightly joined portion with the substrate 1 and formed by the same kind of material as the substrate 1. Since the ultrasonic welding of 5 directly and tightly joins the substrate 1 tightly, the reliability of the airtightness can be improved.

Next, a second embodiment of the present invention will be described below. The components having substantially the same functions as those in the first embodiment are designated by the same reference numerals, and only different portions will be described.

In the first embodiment, the sheets 2 and 3 and the joining member are
Whereas 5 is bonded by adhesion, etc., in this embodiment,
It is configured integrally.

The damper 10 has the effects of the first embodiment and, as described above, the seats 2, 3
Since the joining member 5 and the joining member 5 are integrally molded, the number of members can be reduced, so that the labor for assembling can be reduced and the cost can be reduced.

Next, a third embodiment of the present invention will be described with reference to FIGS.
It will be described below based on. The components having substantially the same functions as those in the first embodiment are designated by the same reference numerals, and only different portions will be described.

In the first embodiment, the joining member 5 is provided,
While the substrate 1 is flat, in this embodiment, the joining member is
5 is not provided, and the substrate 1 is provided with the sandwiching portions 1c, 1c.

More specifically, the peripheral portion 2 of the sheets 2 and 3 on the substrate 1
Circular holding parts 1c, 1c are provided so as to hold b, 3b.

Next, the sandwiching portions 1c, 1c between the sheets 2, 3 and the substrate 1
The joining with and will be described. As shown in FIG. 6 (a),
Positioning is performed so that the peripheral portions 2b and 3b of the sheets 2 and 3 are sandwiched by the sandwiching portions 1c and 1c of the substrate 1, and the sandwiching portions 1c and 1c of the substrate 1 are bent by an ultrasonic swaging method or the like to form the sheets 2 and 3b. Edge of
When joined with 2b and 3b, the sheet is
2,3 are directly bonded to the substrate 1.

In this damper 10, the seats 2 and 3 are
Unlike the conventional example, the peripheral edges 2b and 3b are not sandwiched by the sandwiching member which is a separate member but joined by being sandwiched airtightly to the sandwiching portions 1c and 1c integrally provided on the substrate 1. Therefore, the airtightness and reliability can be improved.

Further, as in the second embodiment, the number of members is reduced and the cost can be reduced.

Further, since the sheets 2 and 3 are positioned so that the peripheral edge portions 2b and 3b thereof are clamped by the clamping portions 1c and 1c of the substrate 1, the positioning is facilitated and the labor for assembling is reduced. You can

[0031]

According to the first aspect of the present invention, the sheet is not sandwiched by the sandwiching member, which is a separate member, as in the conventional example, but is provided at the airtight joint portion with the substrate. Since it is directly and airtightly and strongly bonded to the substrate by ultrasonic welding or the like of the bonding member formed of the same kind of material,
Airtight reliability can be increased.

In addition to the effect of the first aspect, the joining member is integrally formed with the sheet, so that the number of members can be reduced and the assembly can be performed. This reduces the labor and cost.

According to the third aspect, the sheet is
As in the conventional example, the peripheral portion is not sandwiched by the sandwiching member which is a separate member, but is joined by being sandwiched in an airtight manner in the sandwiching portion integrally provided on the substrate, so that the airtight reliability is high. can do.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view showing a state of ultrasonic welding of the above.

FIG. 3 is a cutaway perspective view of a relay using the same as above.

FIG. 4 is a cross-sectional view showing an operating state of the above.

FIG. 5 is a sectional perspective view of the third embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a joined state of the above.

FIG. 7 is a sectional view of a conventional example.

[Explanation of symbols]

 1 substrate 1a through-holes 1c, 1c clamping part 2 seat 2a first chamber 2b peripheral part 3 sheet 3a second chamber 3b peripheral part 4 fluid 5 joining member 10 damper

Claims (3)

[Claims] 1. A resin substrate having a through hole, a rubber sheet for covering both ends of the through hole to form chambers on both sides of the substrate, and when one chamber is pressed, the substrate A damper provided with a fluid that is hermetically sealed so as to be able to move to the other chamber through the through-hole, wherein the sheet is formed of a material similar to that of the substrate at a hermetically joined portion with the substrate. A damper provided with a member. 2. The damper according to claim 1, wherein the joining member is formed integrally with the sheet. 3. A substrate having a through hole, a rubber sheet for covering both ends of the through hole to form chambers on both surfaces of the substrate, and when one chamber is pressed, the through hole of the substrate is opened. A fluid that is hermetically sealed so that it can be moved therethrough to the other chamber,
A damper comprising: a damper, wherein a sandwiching portion that sandwiches a peripheral portion of the sheet in an airtight manner is integrally provided on the substrate.