JP3086899B2 - 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 relay damper applied to a relay, a switch and the like.

[0002]

2. Description of the Related Art Conventionally, there is a damper of this type shown in FIG. This is a resin substrate A having a through-hole A1 formed thereon, and a substrate A covering both ends of the through-hole A1.
Rubber sheets B, forming chambers B1, C1 on both sides of
C, and when one of the chambers B1 or C1 is pressed, a through hole of the substrate A is formed.
A fluid D hermetically sealed so as to be able to move to the other chamber C1 or B1 through A1, and a clamping member E for clamping the peripheral portions B2, C2 of the sheets B, C between the substrate A. It is configured.

[0003]

In such a conventional damper, a pressing member F constituting a relay or the like is provided in one chamber.
When B1 and C1 are pressed, the fluid D moves through the through hole A1 of the substrate A to the other chamber C1 or B1, and the resistance at the time of movement can reduce the collision speed and impact force of the pressing member F, Since the fluid D is hermetically sealed by the sheets B and C, no sealing material is required, the structure is simple and the external dimensions are small, and the collision noise and vibration of household electric appliances and automobiles are minimized. This makes it suitable for use in things that need to be made smaller.

Further, since the peripheral portions B2, C2 of the sheets B, C are held between the substrate A by the holding member E, the chambers B1, C
1 Even if the fluid D to be sealed in is interposed between the sheets B and C and the substrate A and it is difficult to adhere between them,
E and the board A can be easily airtightly joined by ultrasonic welding or the like.

However, in such a conventional apparatus, when one chamber B1 or C1 is pressed and a pressure greater than the clamping force between the clamping member E and the substrate A is applied to the clamping member E, the clamping members E and Airtightness with substrate A is no longer maintained, and fluid D
Leaks from the chambers B1 and C1. The leaked fluid D fills the gap between the pressing member F such as a relay and the damper, causing malfunction of the pressing member F, or when the leaked fluid D scatters, the leaked fluid D There is also a case where a contact contact failure occurs around the contact portion.

[0006] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a damper having high hermetic reliability.

[0007]

In order to solve the above-mentioned problems, the present invention is directed to a resin substrate having a through-hole formed thereon, and a resin substrate covering both ends of the through-hole and provided on both surfaces of the substrate. In a damper comprising a rubber sheet forming each of the chambers, 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 has a configuration in which a bonding member formed of the same material as the substrate is provided in a hermetically bonded 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, there is provided a substrate having a through-hole, a rubber sheet covering both ends of the through-hole and forming chambers on both sides of the substrate, and pressing one of the chambers. And a fluid hermetically sealed so as to be able to move to the other chamber through the through-hole of the substrate, wherein a clamping portion for hermetically clamping a peripheral portion of the sheet is integrated with the substrate. It is a configuration provided in a typical manner.

[0010]

According to the first aspect of the present invention, the sheet is not provided with a peripheral portion held by a holding member which is a separate member as in the conventional example, but is provided at a hermetically bonded portion with the substrate. It is directly and tightly joined to the substrate by ultrasonic welding or the like of a joining member formed of the same kind of material.

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

According to the third aspect, the sheet is:
As in the conventional example, the peripheral portion is not clamped by a clamping member which is a separate member, but the peripheral portion is hermetically clamped and joined to a clamping portion provided integrally with 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 for the substrate 1, sheet
2, 3, fluid 4, and joining member 5.

The substrate 1 is formed of, for example, a resin material such as PBT or ABS and has a through hole 1a at the center and is formed in a rectangular flat plate shape.

As shown in FIG. 1, the sheets 2 and 3 are formed of an elastic material such as silicon rubber into a hemispherical dome shape having a two-step cross-sectional area toward the substrate 1, and have peripheral portions 2b and 2b. A joining member 5 is joined to 3b by bonding or the like. The sheets 2 and 3 cover both ends of the through hole 1a, and a suitable amount of a viscous fluid 4 such as contact lubricating oil is sealed on both surfaces of the substrate 1 to form the first chamber 2a and the second chamber 3a, respectively. The fluid 4 is sealed by forming and joining the joining member 5 and the substrate 1 hermetically by ultrasonic welding.

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

Next, the ultrasonic welding of the joining member 5 and the substrate 1 will be described. As shown in FIG.
When the protrusion 5c of the bonding member 5 is brought into contact with the substrate 1 and the projection 5c of the joining member 5 is ultrasonically welded to the contact portion 1b of the substrate 1 where the projection 5b contacts, the ultrasonic welding energy is applied to the projection 5c. Is concentrated and its tip melts, and the protruding portion 5c and the contact portion 1b of the substrate 1 are joined, so that welding can be performed in a short time even with relatively small energy. When the process advances to 5b, the energy of the ultrasonic welding is dispersed and the strength is not enough to melt, so that the melting is stopped and the size of the melt for welding can be controlled as shown in FIG.

Next, a relay 20 using the damper 10 will be briefly described with reference to FIG. This relay 20
Is provided with a damper 10, an electromagnet device 11, pressing portions 12a and 12b, and a contact portion 13. For details, see Electromagnetic device 11
Comprises 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. Have been. The coil bobbin 11a has a coil 11b
The fixed iron core penetrates through the bobbin of the coil bobbin 11a, and one protruding end is 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 connected to the other end of the fixed iron core. The armature is located between the fixed iron core and the magnetic pole face of the yoke 11c, and attracts and separates from the magnetic pole face 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, the movable frame 11d responds to the operation of the armature, and the pressing portions 12a, 12b provided on the movable frame 11d contact the movable frame 11d. The pressing operation is performed so as to bring the part 13 into and out of contact.

Next, the operation of the damper 10 will be described with reference to 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, the other pressing portion 12a is pressed as shown in FIG. The portion 12b collides with and presses the other second chamber 3a of the damper 10, and as shown in FIG. 3C, the fluid 4 in the second chamber 3a passes through the through-hole 1a to the first chamber 2a. Moving. Then, the moving speed of the pressing portions 12a and 12b is reduced by the resistance generated when the viscous fluid 4 moves, and the shock when the armature collides with the fixed iron core or the magnetic pole surface of the yoke 11c is reduced. When the coil 11b is energized in the opposite direction, the coil 11b operates in the opposite manner as described above, and
After returning to the state shown in FIG. 3A, the armature is again fixed by the damper 10 to the fixed iron core or the yoke 11c.
Impact when colliding with the magnetic pole surface is reduced.

In such a damper 10, the sheets 2, 3
Is a bonding member formed of the same kind of material as that of the substrate 1 and provided in a hermetically bonded portion with the substrate 1 instead of the peripheral portions 2b and 3b being held by a separate holding member as in the conventional example. Since the ultrasonic welding of No. 5 is directly and tightly joined to the substrate 1 in an airtight manner, the reliability of airtightness can be improved.

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

In the first embodiment, the sheets 2, 3 and the joining members
5 is bonded by bonding or the like, whereas in this embodiment,
It is configured to be integrally formed.

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 formed, the number of members can be reduced, so that the assembling work can be reduced and the cost can be reduced.

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

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

More specifically, the peripheral portion 2 of the sheets 2 and 3
Annular holding portions 1c, 1c are provided to surround b and 3b.

Next, the holding portions 1c, 1c between the sheets 2, 3 and the substrate 1
Will be described. As shown in FIG.
The sandwiching portions 1c, 1c of the substrate 1 are positioned so as to sandwich the peripheral portions 2b, 3b of the sheets 2, 3, and the sandwiching portions 1c, 1c of the substrate 1 are bent by an ultrasonic swaging method or the like, and the sheets 2, 3 are bent. Rim
When joined with 2b and 3b, as shown in FIG.
2 and 3 are directly bonded to the substrate 1.

In such a damper 10, the sheets 2, 3
As in the conventional example, the peripheral portions 2b, 3b are not sandwiched by a sandwiching member which is a separate member, but are joined by being sandwiched airtightly by sandwiching portions 1c, 1c provided integrally with the substrate 1. Therefore, the reliability of airtightness can be improved.

Further, similarly to the second embodiment, the number of members can be reduced and the cost can be reduced.

Further, since the sheets 2 and 3 are positioned so that the peripheral portions 2b and 3b are held between the holding portions 1c and 1c of the substrate 1, the positioning is facilitated and the assembling work is reduced. Can be.

[0031]

According to the first aspect of the present invention, the sheet is not provided with a peripheral portion held by a holding member which is a separate member as in the conventional example, but is provided at a hermetically bonded portion with the substrate. Since it is directly and tightly joined to the substrate by ultrasonic welding etc. of joining members formed of the same material,
Airtight reliability can be increased.

[0032] In addition, in addition to the effect of the first aspect, the connecting member is formed integrally with the sheet, so that the number of members can be reduced, and assembly is possible. Labor is reduced and costs are reduced.

According to a third aspect of the present invention, the sheet comprises:
As in the conventional example, the peripheral portion is not sandwiched by a sandwiching member which is a separate member, but is joined and joined in an airtight manner to a sandwiching portion provided integrally with the substrate, so that airtight reliability is improved. can do.

[Brief description of the 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 where ultrasonic welding is performed in the same.

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

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

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

FIG. 6 is a cross-sectional view showing a state where the same is joined.

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

[Explanation of symbols]

 1 Board 1a Through-hole 1c, 1c Nipping part 2 Sheet 2a First chamber 2b Peripheral edge 3 Sheet 3a Second chamber 3b Peripheral edge 4 Fluid 5 Joint member 10 Damper

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01H 3/60 H01H 50/30

Claims (3)

(57) [Claims] 1. A resin substrate having a through hole formed therein, a rubber sheet covering both ends of the through hole to form chambers on both sides of the substrate, and a substrate formed by pressing one of the chambers. A fluid hermetically sealed so as to be able to move to the other chamber through the through-hole, wherein the sheet is formed in a hermetically bonded portion with the substrate by the same material as the substrate. A damper comprising 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 covering both ends of the through-hole to form chambers on both sides of the substrate, and a through-hole of the substrate when one of the chambers is pressed. A hermetically sealed fluid that can be moved through to the other chamber;
A damper, characterized in that a clamping portion for clamping a peripheral portion of the sheet in an airtight manner is provided integrally with the substrate.