JP2927235B2 - Electrode connection structure of piezoelectric transformer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a piezoelectric transformer as a voltage converter using a piezoelectric element, and more particularly to an electrode structure in an electrode connection structure of a piezoelectric transformer.

[0002]

2. Description of the Related Art In general, a piezoelectric transformer generates mechanical vibration in a longitudinal direction by applying an input voltage to a vibrating section, and converts the mechanical vibration into a voltage in a power generating section and outputs the voltage. And has the advantage of being thinner and smaller than a wound transformer. Examples of conventional piezoelectric transformers are disclosed in JP-A-5-21858 and JP-A-6-334.
234, JP-A-6-334235, and JP-A-6-342945.

[0003] Since a piezoelectric transformer involves mechanical vibration, it cannot be put to practical use by itself, and some kind of electrode connection structure is required. As a conventional piezoelectric transformer support structure, as shown in FIGS. 28A and 28B, a structure in which a piezoelectric transformer main body is fixed to a printed wiring board is employed.

That is, as shown in FIGS. 28A and 28B, a mounting opening 206 is formed in a rectangular substrate 200, and a piezoelectric transformer 201 is formed on an inner wall surface of the mounting opening 206 in the width direction X. Support projections 202, 203, 204, and 205 are provided so as to correspond to the vibration nodes P1 and P2. These support projections 202, 203, 204, 205
The piezoelectric transformer 201 is sandwiched and supported therebetween.

As described above, the support projections 202, 203, and 2
According to Patent Documents 04 and 205, it is possible to support the piezoelectric transformer 201 in a vibration mode by supporting the vibration nodes P1 and P2. Note that examples of a conventional piezoelectric transformer support structure include JP-A-7-202288 and JP-A-7-202289.

[0006]

However, the vibration frequency of the piezoelectric transformer 201 may change in accordance with changes in input conditions (drive voltage and the like), output conditions (load and the like), and environmental conditions such as temperature changes. . A change in the vibration frequency causes a change in the physical position of the vibration nodes P1 and P2,
Initially set support projections 202, 203, 204, 205
There is a possibility that the required performance may not be obtained by suppressing the vibration at the position of, because the vibration is suppressed.

When the drive voltage (input voltage) is increased to obtain a high output voltage, the piezoelectric transformer 201
Vibrates more than the allowable value to increase the vibration amplitude. In this case, the conventional method of firmly fixing and supporting the piezoelectric transformer 201 may damage the piezoelectric transformer 201.

On the other hand, in consideration of the structure of the piezoelectric transformer, the labor of assembling, the manufacturing cost, and the like, it is preferable to reduce the number of parts as much as possible. Conventionally, the wiring to the input electrode and the output electrode of the piezoelectric transformer 201 is fixed by soldering. However, it is possible to avoid the characteristics due to soldering or the thermal influence on peripheral components, or to save labor required for assembly. Had been requested.

SUMMARY OF THE INVENTION It is an object of the present invention to be able to support a vibrating node portion with an appropriate degree of freedom in response to a change in frequency and a change in drive voltage with a small number of parts, and to facilitate electric wiring. An object of the present invention is to provide an electrode connection structure of the obtained piezoelectric transformer.

[0010]

Means for Solving the Problems An electrode connection structure for a piezoelectric transformer according to the present invention has a size capable of accommodating the piezoelectric transformer with a gap around the width and the length of the plate-shaped piezoelectric transformer. A substrate having a mounting opening provided with a width-direction support protrusion abutting on a width-direction end surface of the piezoelectric transformer and a longitudinal direction support protrusion abutting on the longitudinal-direction end surface; and a thin plate having flexibility or elasticity. Formed in the body,
It has a joint support projection formed by projecting a part of the plate.
And, a support member to which the knuckles support projection abuts against the vibration node portions of the housed piezoelectric transformer before Symbol mounting opening,
The support protrusion is provided with a conductor that is in electrical contact with the electrode of the piezoelectric transformer. According to the present invention, the width direction and the length direction of the piezoelectric transformer are supported by the width direction support projection and the length direction support projection provided in the mounting opening of the substrate. butt a portion of the support member which is formed of a thin plate material having wrinkles or elasticity
Since the vibrating nodes of the piezoelectric transformer are supported by the node supporting projections formed by projecting, and the conductor provided on the node supporting projections is brought into contact with the electrodes of the piezoelectric transformer, it has elasticity. The vibrating nodes of the piezoelectric transformer are supported by the node supporting protrusions, and the vibration nodes are not fixedly restrained to suppress the vibration. Electrode can be connected. As a result, it is possible to adapt to an increase in vibration amplitude at the time of high output, and it is possible to prevent breakage of the piezoelectric transformer. Further, the piezoelectric element can be properly supported without suppressing vibration even when the vibration node position changes due to the fluctuation of the vibration wave number due to a change in environmental conditions or the like. In addition, since the conductors provided on the support protrusions can receive signals to the electrodes of the piezoelectric transformer, conventional wiring and soldering are not required, facilitating assembly and thermal effects of soldering. Can be avoided.

An electrode connection structure for a piezoelectric transformer according to the present invention includes a substrate having a mounting opening for accommodating the piezoelectric transformer with a gap around the width and the length of the plate-shaped piezoelectric transformer. A width-direction support projection that abuts the width-direction end face of the piezoelectric transformer housed in the mounting opening, a longitudinal-direction support projection that abuts the longitudinal end face, and a node that abuts a vibration node of the piezoelectric transformer. A supporting member made of a thin plate having flexibility or elasticity, and a supporting member electrically connected to the electrode of the piezoelectric transformer at the node supporting protrusion. You. According to the present invention, the piezoelectric transformer is provided in the mounting opening of the substrate, and is supported by the support member formed of a flexible or elastic thin plate material. That is, the mounting opening acts as a storage space, and the piezoelectric transformer is supported by the support member, and the support member is fixed to and integrated with the substrate. The piezoelectric transformer is elastically supported in a width direction and a longitudinal direction of the piezoelectric transformer by a width direction support projection and a length direction support projection provided on a support member, and the vibration node is a node support projection and this node. The electrode is contacted with the electrode of the piezoelectric transformer while being elastically supported by the conductor provided with the support protrusion. In this way, the piezoelectric transformer is elastically supported and contacted not only at the vibrating nodes but also as a whole, so that the vibrating nodes are fixedly constrained and connected to the electrodes of the piezoelectric transformer without suppressing vibration. The conductor can be connected to the electrode of the piezoelectric transformer with a high degree of stability. As a result, it is possible to adapt to an increase in vibration amplitude at the time of high output, and it is possible to prevent breakage of the piezoelectric transformer. Further, the piezoelectric element can be properly supported without suppressing vibration even when the vibration node position changes due to the fluctuation of the vibration wave number due to a change in environmental conditions or the like. In addition, the conductors provided on the joint supporting projections allow signals to be received from and to the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, facilitating assembly and reducing the heat of soldering. Influence can be avoided.

In the electrode connecting structure for a piezoelectric transformer according to the present invention, if necessary, the supporting member formed of the flexible or elastic thin plate may include the width direction supporting projection, the longitudinal direction supporting projection, and The knot supporting projection is formed by a protruding piece formed by cutting and raising each corresponding position in the thin plate material. According to the present invention, since each of the support projections can be formed by cutting and raising a part of the thin sheet material having elasticity, the width-direction support projection, the longitudinal-direction support projection, and the node-portion support projection can be formed. It is easy to adjust the amount of added support strength and elasticity, and it is possible to reduce the weight due to notches and cuts.Since the conductors provided on each of the support projections formed in this way can be simplified It can be connected to the electrodes of the piezoelectric transformer quickly and reliably.

The electrode connecting structure of the piezoelectric transformer according to the present invention is configured such that each end of the width-direction supporting projection, the longitudinal-direction supporting projection, and the node supporting projection is bent in the thickness direction as necessary. It is. According to the present invention, since each tip of each support protrusion is formed by bending in the thickness direction, the support strength and elasticity of the width-direction support protrusion, the longitudinal direction support protrusion, and the node support protrusion are added. The amount can be adjusted, and the conductor provided on each of the support protrusions formed in this way can more reliably connect to the electrodes of the piezoelectric transformer.

The electrode connecting structure of the piezoelectric transformer according to the present invention may have the above-mentioned flexible and elastic thin plate material if necessary.
The support member formed by the width direction support protrusion, the longitudinal direction
Support projections and node support projections correspond to each
This is a configuration in which a projection is formed at a position by pressing .
According to the present invention, since each support projection is formed by press working, it is easy to form the width direction support projection, the longitudinal direction support projection, and the node support projection, and the vibration node of the piezoelectric transformer is excessively formed. It is possible to adjust the supporting strength and the amount of elasticity for proper support without suppressing the contact, and the conductors provided on each of the supporting protrusions formed in this way can easily and reliably apply the electrodes of the piezoelectric transformer. Can connect.

An electrode connection structure for a piezoelectric transformer according to the present invention comprises a substrate having a mounting opening for accommodating the piezoelectric transformer with a gap around the width and the length of the plate-shaped piezoelectric transformer. A width-direction support projection that abuts the width-direction end face of the piezoelectric transformer housed in the mounting opening, a longitudinal-direction support projection that abuts the lengthwise end face, and a node that abuts a vibration node of the piezoelectric transformer. A supporting member formed of a flexible or elastic thin plate material, wherein the node supporting protrusion located on one of the vibrating nodes of the piezoelectric transformer has one of the vibrations. The node supporting projection, which abuts on the node and is located on the other of the vibrating nodes of the piezoelectric transformer, supports the vibrating node in a loose fit state with a gap between the node and the other vibrating node. And a node supporting protrusion that contacts the one vibration node. The conductor in electrical contact with the piezoelectric transformer of the electrodes is configured to be provided. According to the present invention, the conductor provided on the node supporting projection positioned at one of the vibration nodes of the piezoelectric transformer abuts and supports one of the opposing vibration nodes, and the node positioned at the other. Since the supporting projection has a gap between the opposing vibrating node and the vibrating node in a loose fit state, it supports the vibrating node in a free state without excessive suppression of the vibrating node. In this state, it can be connected to the electrode of the piezoelectric transformer by the conductor provided on the node supporting protrusion located on one side. In addition, the conductors provided on the joint supporting projections enable signals to be received to the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring, soldering, etc., facilitating assembly and reducing the heat of soldering. The effects can be avoided.

An electrode connection structure for a piezoelectric transformer according to the present invention includes a substrate having a mounting opening for accommodating the piezoelectric transformer with a gap around the width and the length of the plate-shaped piezoelectric transformer. A width supporting protrusion provided at a position facing the width end face of the piezoelectric transformer housed in the mounting opening, a longitudinal supporting protrusion provided at a position facing the longitudinal end face, and the piezoelectric transformer. It has a node support projection provided at a position corresponding to the vibration node of the transformer,
A supporting member formed of a flexible or elastic thin plate material, wherein the longitudinal support protrusion has a gap between the longitudinal end face of the piezoelectric transformer and the loosely fitted piezoelectric transformer. The node support protrusion is provided with a conductor that electrically contacts the electrode of the piezoelectric transformer. According to the present invention, the longitudinal support protrusion has a gap between the longitudinal transformer and the longitudinal end face of the piezoelectric transformer to support the piezoelectric transformer in a loosely fitted state, and a conductor is provided on the node support protrusion. As a result, the degree of freedom is given not only in the thickness direction of the piezoelectric transformer but also in the longitudinal direction, and the conductor can be formed without excessively suppressing the vibrating nodes. The electrode of the piezoelectric transformer can be brought into electrical contact, and the conductor can be connected to the electrode of the piezoelectric transformer while being properly supported. In addition, since the conductor provided on the node supporting projection can receive signals to the electrodes of the piezoelectric transformer, conventional wiring and soldering are not required, facilitating assembly and reducing heat of soldering. Influence can be avoided.

An electrode connection structure for a piezoelectric transformer according to the present invention includes a substrate having a mounting opening for accommodating the piezoelectric transformer with a gap around the width and the length of the plate-shaped piezoelectric transformer. A width supporting protrusion provided at a position facing the width end face of the piezoelectric transformer housed in the mounting opening, a longitudinal supporting protrusion provided at a position facing the longitudinal end face, and the piezoelectric transformer. A supporting member having a plurality of node support protrusions made of an elastic material provided at positions corresponding to the vibration nodes of the transformer, wherein the width-direction support protrusion contacts the width-direction end surface of the piezoelectric transformer, The longitudinal support protrusion supports the piezoelectric transformer in a loosely fitted state with a gap between the piezoelectric transformer and the longitudinal end face of the piezoelectric transformer,
The node supporting projection located on one of the vibration nodes of the piezoelectric transformer abuts on the one vibration node, and the node supporting projection located on the other of the vibration nodes of the piezoelectric transformer is connected to the other. The vibrating node portion is supported in a loosely fitted state with a gap between the vibrating node portion and a conductive member electrically contacting the electrode of the piezoelectric transformer at the node supporting protrusion. According to this invention, the longitudinal direction supporting projection supports the piezoelectric transformer in a loose fit state with a gap between the longitudinal direction end face of the piezoelectric transformer and the node portion located on the other vibrating node portion. The supporting protrusion has a gap between the other vibrating node and supports the vibrating node in a loosely fitted state, and contacts a conductor provided on the node supporting protrusion with an electrode of the piezoelectric transformer. Therefore, the degree of freedom is given also in the longitudinal direction, and the conductor provided on the node supporting protrusion is electrically connected to the electrode of the piezoelectric transformer in an appropriately supported state without excessively suppressing the vibration node. Can be connected to In addition, since the conductor provided on the node supporting projection can receive signals to the electrodes of the piezoelectric transformer, conventional wiring and soldering are not required, facilitating assembly and reducing heat of soldering. Influence can be avoided.

An electrode connection structure for a piezoelectric transformer according to the present invention comprises a first support member comprising a thin plate-like member having a storage recess capable of storing a plate-shaped piezoelectric transformer, and a storage recess of the first support member. A second member made of a thin plate member for closing the opening;
And the first support member or the second support member.
At least one of the support members is provided with a support projection having elasticity at a position corresponding to the vibration node of the piezoelectric transformer, and sandwiches the vibration node of the piezoelectric transformer with the support projection, and A conductor electrically contacting the electrode of the piezoelectric transformer is provided on the support projection. According to the invention, the piezoelectric transformer is supported by the first support member and the second support member, and the piezoelectric transformer is electrically connected to the support protrusion provided on at least one of the first support member and the second support member. Since the body is formed, the conventional substrate is not required, the number of component types can be reduced, and the conductor can be connected to the electrode of the piezoelectric transformer. Further, even in such a structure including only the support member, the vibration node of the piezoelectric transformer is supported by the node supporting protrusion having elasticity, so that the vibration node is not fixed to restrain the vibration. Can be supported with an appropriate degree of freedom. As a result, it is possible to adapt to an increase in vibration amplitude at the time of high output, and it is possible to prevent breakage of the piezoelectric transformer. Further, the piezoelectric transformer can be appropriately supported without suppressing the vibration even when the vibration node position changes due to the fluctuation of the vibration wave number due to the change of the environmental condition or the like. In addition, the conductors provided on the support projections allow signals to be received to the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, simplifying assembly and reducing the thermal effects of soldering. Can be avoided.

An electrode connection structure for a piezoelectric transformer according to the present invention has a size capable of accommodating the piezoelectric transformer with a gap around the width and the length of the plate-shaped piezoelectric transformer, A first support member having a width-direction support protrusion abutting on the width-direction end surface of the transformer and a longitudinal direction support protrusion abutting on the longitudinal direction end surface, and a first support member made of an elastic thin plate member;
A second support member made of a thin plate member that closes an opening of the storage recess of the first support member, wherein at least one of the first support member and the second support member includes the piezoelectric transformer. An elastic supporting protrusion is provided at a position corresponding to the vibrating node of the piezoelectric transformer, and the supporting protruding portion is configured to sandwich the vibrating node of the piezoelectric transformer, and electrically contacts the electrode of the piezoelectric transformer. In this configuration, a conductor is provided on the support protrusion. According to the present invention, in the piezoelectric transformer, the width direction and the longitudinal direction of the piezoelectric transformer are supported by the width direction protrusion and the length direction support protrusion provided on the first support member. And a conductive member which is supported by the second support member and which is in electrical contact with the electrode of the piezoelectric transformer is formed on a support protrusion provided on at least one of the first support member and the second support member. This eliminates the need for a substrate as in the related art, allows a reduction in the number of component types, and allows the conductor to be connected to the electrode of the piezoelectric transformer. Further, even in such a structure including only the support member, the vibration node of the piezoelectric transformer is supported by the node supporting protrusion having elasticity, so that the vibration node is not fixed to restrain the vibration. Can be supported with an appropriate degree of freedom. As a result, it can be adapted to an increase in vibration amplitude at the time of high output,
Destruction of the piezoelectric transformer can be prevented. Further, the piezoelectric transformer can be appropriately supported without suppressing the vibration even when the vibration node position changes due to the fluctuation of the vibration wave number due to the change of the environmental condition or the like. in addition,
Since the conductor provided on the support protrusion enables signal reception to the electrodes of the piezoelectric transformer, it can be supplied, so that conventional wiring, soldering, etc. become unnecessary, facilitating assembly and soldering. Thermal effects can be avoided.

The electrode connecting structure for a piezoelectric transformer according to the present invention has a size capable of accommodating the piezoelectric transformer with a gap around the width and the longitudinal direction of the plate-shaped piezoelectric transformer, A first support member made of an elastic thin plate-like member having a width direction support protrusion abutting on the width direction end surface of the transformer and a longitudinal direction support protrusion abutting on the longitudinal direction end surface;
The first support member is formed symmetrically so as to be attached in a pair with the first support member, and has a size capable of accommodating the piezoelectric transformer with a gap around the width direction and the longitudinal direction of the plate-shaped piezoelectric transformer. And a second support member made of an elastic thin plate-like member having a width-direction support protrusion abutting on a width-direction end surface of the piezoelectric transformer and a longitudinal direction support protrusion abutting on a longitudinal-direction end surface, The first and second supporting members have elastic supporting projections at positions corresponding to the vibration nodes of the piezoelectric transformer, and the supporting projections sandwich the vibration nodes of the piezoelectric transformer, and The projection is provided with a conductor that is in electrical contact with the electrode of the piezoelectric transformer. According to the present invention, the first support member and the second support member are formed in contrast to each other, and the piezoelectric transformers are stored in the storage recesses formed respectively, and are elastically supported by the respective support protrusions. This eliminates the need for a conventional board, and allows a reduction in the number of parts. Further, even in such a structure including only the support member, the vibration node of the piezoelectric transformer is supported by the node supporting protrusion having elasticity, so that the vibration node is not fixed to restrain the vibration. Can be supported with an appropriate degree of freedom. As a result, it is possible to adapt to an increase in vibration amplitude at the time of high output, and it is possible to prevent breakage of the piezoelectric transformer. Further, the piezoelectric transformer can be appropriately supported without suppressing the vibration even when the vibration node position changes due to the fluctuation of the vibration wave number due to the change of the environmental condition or the like. In addition, the conductors provided on the support projections allow signals to be received to the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, simplifying assembly and reducing the thermal effects of soldering. Can be avoided.

The electrode connecting structure of the piezoelectric transformer according to the present invention may be provided, if necessary, on one of the sticking portions near the end of the storage recess in the longitudinal direction of the first supporting member toward the second supporting member. A second positioning member that projects toward the first support member at the other sticking portion near the end of the storage recess in the longitudinal direction of the second support member. A positioning projection is provided, and the first
A first positioning hole into which the second positioning protrusion can be fitted is formed in the other sticking portion of the support member, and the first positioning protrusion is formed in one sticking portion of the second support member. A second positioning hole in which a portion can be fitted; the first positioning protrusion is fitted in the second positioning hole;
Are fitted into the first positioning holes to integrate the first support member and the second support member. According to the present invention, since the positioning protrusion and the positioning hole are formed symmetrically with each other by the first support member and the second support member, only one type of support member is required.
It is possible to reduce the number of component types and omit processing steps. Also,
Since the vibrating nodes of the piezoelectric transformer are supported by the elastic node supporting protrusions, the vibrating nodes can be supported with an appropriate degree of freedom without restraining the vibrating nodes in a fixed manner to suppress vibration. As a result, it is possible to adapt to an increase in vibration amplitude at the time of high output, and it is possible to prevent breakage of the piezoelectric transformer. Further, the piezoelectric transformer can be appropriately supported without suppressing the vibration even when the vibration node position changes due to the fluctuation of the vibration wave number due to the change of the environmental condition or the like.

The electrode connection structure for a piezoelectric transformer according to the present invention may have an arc-shaped or ring-shaped pressure-contact body having elasticity between the longitudinal end face of the piezoelectric transformer and the longitudinal inner wall of the housing recess as required. It is configured with intervening. According to the present invention, when the piezoelectric transformer vibrates, the longitudinal end of the piezoelectric transformer vibrates in an arc around the vibrating node, but the longitudinal end face of the piezoelectric transformer and the longitudinal inner wall of the storage recess are in contact with each other. Since the arc-shaped or ring-shaped pressure contact body having elasticity is interposed therebetween, the longitudinal end face of the piezoelectric transformer is always urged with a constant pressing force, and is favorably supported with an appropriate degree of freedom. In addition, since the vibrating nodes of the piezoelectric transformer are supported by the elastic node supporting projections, the vibrating nodes can be supported with an appropriate degree of freedom without restraining the vibrating nodes in a fixed manner and suppressing vibration. . As a result, it is possible to adapt to an increase in vibration amplitude at the time of high output, and it is possible to prevent breakage of the piezoelectric transformer. Further, the piezoelectric transformer can be appropriately supported without suppressing the vibration even when the vibration node position changes due to the fluctuation of the vibration wave number due to the change of the environmental condition or the like.

An electrode connection structure for a piezoelectric transformer according to the present invention includes a first support member made of a thin plate-like member having a storage recess capable of storing a plate-shaped piezoelectric transformer, and a storage recess of the first support member. A second member made of a thin plate member for closing the opening;
And a storage recess provided in at least one of the first support member and the second support member for storing a control circuit of the piezoelectric transformer, and the first support member or the second support member. At least one of the support members is provided with a support protrusion that is provided so as to protrude at a position corresponding to the vibration node of the piezoelectric transformer and has elasticity, and the piezoelectric protrusion is formed by the support protrusion. The vibrating node portion of the transformer is sandwiched, and a conductor that electrically contacts the electrode of the piezoelectric transformer is provided on the supporting protrusion. According to the present invention, since a circuit accommodating portion is provided, various circuits necessary for driving the piezoelectric transformer can be integrated with the piezoelectric transformer, and the device configuration can be made compact. In addition, since the vibrating nodes of the piezoelectric transformer are supported by the elastic node supporting projections, the vibrating nodes can be supported with an appropriate degree of freedom without restraining the vibrating nodes in a fixed manner and suppressing vibration. . As a result, it is possible to adapt to an increase in vibration amplitude at the time of high output, and it is possible to prevent breakage of the piezoelectric transformer. Further, the piezoelectric transformer can be appropriately supported without suppressing the vibration even when the vibration node position changes due to the fluctuation of the vibration wave number due to the change of the environmental condition or the like. In addition, the conductors provided on the support projections allow signals to be received from the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, simplifying assembly and reducing the thermal effects of soldering. Can be avoided.

[0024]

Next, preferred embodiments of the present invention will be described with reference to the drawings. (I) First Embodiment FIGS. 1A to 2B show a first embodiment of the present invention. This embodiment discloses an example of a structure in which an end face in the width direction and an end face in the longitudinal direction of the piezoelectric transformer 2 are supported on the substrate 1 side, and the vibrating nodes in the thickness direction are supported by the thin plates 3 and 4.

As shown in FIG. 1A, a mounting opening 11 is provided in a substrate 1 such as a printed wiring board. The mounting opening 11 is formed with a large dimension so as to provide an appropriate gap in the width direction and the longitudinal direction of the piezoelectric transformer 2. A pair of semi-cylindrical width-direction support projections 7 and 8 and 9 and 10 project from the inner wall surface of the attachment opening 11 in the width direction.
Similarly, a pair of semi-cylindrical longitudinal supporting projections 5 and 6 are provided on the inner wall surface in the longitudinal direction of the mounting opening 11.

Each of the width-direction supporting projections 7, 8, 9, 10 is located at a position (or a position near the vibration node) of the piezoelectric transformer 2 (see FIG. 28A, reference symbols P1 and P2). The piezoelectric transformer 2
Are in line contact with the end faces of In addition, the width direction support projections 7 to 10 may be formed in a projection shape, and the tips may be brought into point contact. The piezoelectric transformer 2 is accommodated in the mounting opening 11 of the substrate 1 while being supported by these width-direction supporting projections 7 to 10.

The longitudinal support projections 5 and 6 are provided at or near the center of the piezoelectric transformer 2 in the width direction, and their tips abut the respective longitudinal end faces of the piezoelectric transformer 2 by line contact. Similarly, the longitudinal support projections 5 and 6 may be formed in a projecting shape, and the tips may be brought into point contact. FIG. 1 (B) ~
As shown in FIG. 2B, the piezoelectric transformer 2 is sandwiched between a pair of thin plates 3 and 4 made of a thin plate having flexibility and elasticity.

The thin plate 3 is large enough to cover the mounting opening 11, and the thin plate 3 is positioned on the piezoelectric transformer 2 side so as to abut on the vibration node position on one surface of the piezoelectric transformer 2 (or in the vicinity thereof). Projecting semi-cylindrical node supporting projections 12 and 1
3 are formed. Similarly, the thin plate 4 is attached to the mounting opening 11.
And a semi-cylindrical node supporting projection protruding toward the piezoelectric transformer 2 so as to contact the vibration node position (or a position near the vibration node) on the other surface of the piezoelectric transformer 2 on the thin plate 4. 14 and 15 are formed.

As the thin plates 3 and 4, specifically, a polyimide resin film, a polyester resin film, a polycarbonate resin film, a polyester film composite polyphenylene sulfide resin film, aramid paper, or the like can be used. Although it is preferable to have a property, a composite material in which an insulating material and another material are combined can be used. This applies to a thin plate described later. Each node support projection 12-15
Although the tips are in contact with the respective end faces of the piezoelectric transformer 2 by line contact, the node support projections 12 to 15 may be formed in a plurality of projections and the tips may be brought into point contact.

As shown in FIGS. 2A and 2B,
Of these node supporting protrusions 12 to 15, conductive films 152 and 153 that can electrically contact the positive and negative input electrodes of the piezoelectric transformer 2 are formed on the node supporting protrusions 12 and 14. . As shown, the conductive films 152 and 153
It is led out through a signal line of a wiring pattern provided on the mating surface side of the thin plates 3 and 4 and the substrate 1. On the other hand, a conductive film 154 that can be electrically contacted with the output electrode of the piezoelectric transformer 2 is formed on the longitudinal supporting protrusion 6, and provided on the mating surface side of the thin plate 3 or 4 and the substrate 1 as necessary. Via a signal line formed by the wiring pattern. Positioning support protrusions 16, 17, 18, and 19 are formed at longitudinal ends of the mounting opening 11, and are fitted into positioning holes 20 and 21 provided at corresponding positions on the substrate 1.

The above-mentioned joint supporting projections 12, 13, 14, 1
5. The positioning support protrusions 16, 17, 18, and 19 are thin plates 3.
And 4 are formed by, for example, pressing.
As another processing method, when a resin material is used for the thin plates 3 and 4, injection molding using a mold can be used. In assembling, the thin plates 3 and 4 are integrated with an adhesive or a double-sided tape.

In the above configuration, conductive films 152 and 153 are formed on the inner surfaces of the elastic node supporting protrusions 12 and 14, and conductive films 154 are formed on the side surfaces of the elastic longitudinal supporting protrusions 6. As a result, the vibrating nodes are supported by a flexible structure (or soft structure) in contact with the vibrating nodes. Each conductive film 1
52, 153 and 154 can be connected to the input electrode and output electrode of the piezoelectric transformer 2, respectively, and the vibration nodes are restrained to suppress the vibration forcibly or to the piezoelectric transformer 2 without breaking the piezoelectric transformer 2. The DC voltage can be reliably applied, and the transformed voltage can be output from the piezoelectric transformer 2.

(II) Second Embodiment FIGS. 3A to 4B show a second embodiment of the present invention. This embodiment discloses a structural example in which the substrate 1 is used as a storage container and the piezoelectric transformer 2 is supported by the thin plates 3 and 4.

As shown in FIG. 3A, a large-sized mounting opening 11 is formed in the substrate 1 so as to provide an appropriate gap in the width and longitudinal directions of the piezoelectric transformer 2.
As shown in FIGS. 3B to 4B, the piezoelectric transformer 2
Is sandwiched on a sandwich by a pair of thin plates 3 and 4 having a thin shape having flexibility and elasticity.

The thin plate 3 has a size enough to cover the mounting opening 11, and the piezoelectric transformer 2 is positioned so that the tip of the thin plate 3 comes into contact with a vibration node position (or a position in the vicinity thereof) on one surface of the piezoelectric transformer 2. Semi-cylindrical node support projection 12 projecting to the side
And 13 are formed, and their ends are in contact with the surface of the piezoelectric transformer 2 by line contact (or point contact).

The thin plate 3 has a pair of width-direction supporting projections 24, 25, 26, and 2 which are in contact with the width-direction end surfaces of the piezoelectric transformer 2 at (or near) the vibration node position.
7 are provided, and their side end faces are connected to the piezoelectric transformer 2.
Is in line contact (or point contact) with the end face in the width direction. Further, the thin plate 3 is provided with a pair of longitudinal support projections 22 and 23 that contact the longitudinal end surfaces of the piezoelectric transformer 2, and their side end surfaces are in line contact with the longitudinal end surfaces of the piezoelectric transformer 2 (or point-like). Contact). Similarly, the thin plate 4 is formed symmetrically with the thin plate 3, and has joint supporting protrusions 14, 15, positioning supporting protrusions 18, 19, and longitudinal supporting protrusions 28, 29, 30, 31. .

As shown in FIGS. 4A and 4B,
The node supporting protrusions 12 and 14 have conductive films 152 and 15 electrically contactable with the positive and negative input electrodes of the piezoelectric transformer 2, respectively.
3 are formed. These conductive films 152 and 153
Is led out through a signal line of a wiring pattern provided on the mating surface side of the thin plates 3 and 4 and the substrate 1 as shown in the figure. In addition, conductive films 154 and 155 are formed on the longitudinal support protrusions 23 and 29 so as to be in electrical contact with the output electrodes of the piezoelectric transformer 2. If necessary, the mating surface between the thin plate 3 or 4 and the substrate 1 is formed. It is led out through a signal line by a wiring pattern provided on the side.

Positioning support protrusions 16 and 17 and positioning support protrusions 18 and 19 are formed at the longitudinal ends of the mounting opening 11, and are respectively provided in positioning holes 20 and 21 provided at corresponding positions on the substrate 1. Mated. The above-described node support protrusions 12, 13, 14, 15, positioning support protrusion 1
6, 17, 18, 19, longitudinal support projections 22, 23,
28, 29 and the width direction support projections 30, 31 are formed by, for example, pressing the thin plates 3 and 4. As another processing method, when a resin material is used for the thin plates 3 and 4, injection molding using a mold can be used. In assembling, the thin plates 3 and 4 are integrated by bonding with an adhesive or a double-sided tape, or by welding such as heating.

In the above configuration, the joint supporting projections 12,
13, 14, 15, the longitudinal support protrusions 22, 23, the width support protrusions 24, 25, 26, 27, 30, 31, and the longitudinal support protrusions 28, 29 have elasticity. The conductive films 152 and 153 are formed on the protrusions 12 and 14, and the conductive films 154 and 1 are formed on the longitudinal support protrusions 23 and 29.
Since the vibrating nodes 55 are formed, the vibrating nodes are supported by the flexible structure (or the soft structure) in the thickness direction and the width direction, and also in the longitudinal direction.
153 and 154 are connected to the input electrode and the output electrode of the piezoelectric transformer 2, respectively, so that it can be flexibly supported even when the position of the articulation portion changes or the vibration amplitude increases due to the fluctuation of the vibration frequency. The input voltage can be reliably applied to the piezoelectric transformer 2 without restraining the node portion to suppress the vibration and the piezoelectric transformer 2 is not broken, and the transformed voltage can be output from the piezoelectric transformer 2.

(III) Third Embodiment FIGS. 5A to 6B show a third embodiment of the present invention. This embodiment discloses an example in which the substrate 1 is used as a storage container and the piezoelectric transformer 2 is supported by the thin plates 3 and 4, and one of the vibrating nodes and the longitudinal direction are supported by a more flexible structure. .

Since the basic structure is the same as that of the second embodiment (FIGS. 3A to 4B), only different parts will be described below, and other parts will be described above. Invite. This embodiment is different from the second embodiment in that a gap 34 is provided between the tip of the node supporting protrusions 13A and 15A of the thin plate 3 supporting one of the vibrating nodes and the surface of the piezoelectric transformer 2. Nodal support projections 13A and 15A are formed so as to place 35, and the longitudinal support projections 22, 28 and 23 and 29 place gaps 32 and 33 between the end faces of the piezoelectric transformer 2 in the longitudinal direction. It is a structure formed in. The appropriate length of these gaps 32, 33 is
The possible fluctuation of the vibration frequency and the fluctuation width of the vibration amplitude are obtained and set experimentally and empirically.

As described above, one of the vibrating nodes and the longitudinal direction are supported by the flexible structure via the spaces 32, 33, 34, and 35, and the other of the vibrating nodes is formed by the nodes on which the conductive films 152 and 153 are formed. Because it is sandwiched between the part support projections 12 and 14,
The piezoelectric transformer 2 can flexibly change the position of the vibration node due to the fluctuation of the vibration frequency or increase the vibration amplitude.
As well as reliably contacting each electrode of the piezoelectric transformer 2, forcing the vibration nodes to restrain the vibration and forcing the input voltage to the piezoelectric transformer 2 without breaking the piezoelectric transformer 2. The voltage can be reliably applied and the transformed voltage can be output from the piezoelectric transformer 2. That is, even if the vibrating node is set in advance as a position corresponding thereto, the position may be different from the previously set position depending on the ratio of the thickness, width, length, and the like of the piezoelectric transformer 2. Even in such a case, the piezoelectric transformer 2 can be freely supported at a predetermined vibration amplitude without suppressing the vibration of the piezoelectric transformer 2 itself. In particular, the node supporting protrusions 13A and 15A and the longitudinal supporting protrusions 22 and 2 are supported.
A gap 3 between each of the piezoelectric transformers 2, 8, 23, 29
2, 33, 34, 35, the vibration of the piezoelectric transformer 2 causes the position of the true vibration node of the piezoelectric transformer 2 to be disposed without forming a gap. The parts 12 and 14 are naturally moved and supported so as to contact the parts 12 and 14. Note that the output voltage converted by the piezoelectric transformer 2 in the case of the present embodiment is output from this lead-out wiring by connecting a flexible lead-out wiring directly to the side end of the piezoelectric transformer 2 by soldering or the like. Can be.

(IV) Fourth Embodiment FIGS. 7A to 8B show a fourth embodiment of the present invention. This embodiment discloses an example in which, in a structure in which a substrate 1 is used as a storage container and a piezoelectric transformer 2 is supported by thin plates 3 and 4, each support protrusion is supported by a notch protrusion.

As shown in FIG. 7A, a large-sized mounting opening 11 is formed in the substrate 1 so as to provide an appropriate gap in the width and longitudinal directions of the piezoelectric transformer 2.
As shown in FIGS. 7B to 8B, the piezoelectric transformer 2
Is sandwiched on a sandwich by a pair of thin plates 3 and 4 having a thin shape having flexibility and elasticity.

The thin plate 3 has a size enough to cover the mounting opening 11, and the piezoelectric transformer 2 is positioned so that the tip of the thin plate 3 comes into contact with the vibration node position (or a position near the vibrating node) on one surface of the piezoelectric transformer 2. Node supporting protrusions 42 and 43 projecting to the side are formed, and their ends abut on the surface of the piezoelectric transformer 2 by line contact (or point contact).

The thin plate 3 has a pair of hook-shaped width-direction supporting projections 38, 39, 4 which are in contact with the width-direction end surfaces of the piezoelectric transformer 2 at the vibration node position (or in the vicinity thereof).
0 and 41 are provided, and their side end faces are in contact with the width direction end faces of the piezoelectric transformer 2 by line contact (or point contact). Further, the thin plate 3 is provided with a pair of longitudinal supporting projections 36 and 37 which are in contact with the longitudinal end surfaces of the piezoelectric transformer 2, and their side end surfaces are in line contact with the longitudinal end surfaces of the piezoelectric transformer 2 (or point contact). Contact).

On the other hand, the thin plate 4 has a size to cover the mounting opening 11, and the piezoelectric transformer is so arranged that the tip of the thin plate 4 abuts on the vibrating node position (or a position near the vibrating node) on the other surface of the piezoelectric transformer 2. Knot supporting projections 44, 45 projecting to the two sides
Are formed, and their ends are in contact with the surface of the piezoelectric transformer 2 by line contact (or point contact).

Positioning support projections 16, 17, 18, 19 are formed at the longitudinal end of the mounting opening 11, and
Are respectively fitted into positioning holes 20 and 21 provided at corresponding positions. The longitudinal supporting projections 36 and 37 and the width supporting projections 38, 39, 40 and 4
1. The knot supporting projections 42, 43, 44 and 45 are formed by punching and bending the thin plates 3 and 4. As another molding method, when a resin material is used for the thin plates 3 and 4, injection molding using a mold can be used.

As shown in FIGS. 8A and 8B,
The node supporting protrusions 42 and 44 have conductive films 152 and 15 electrically contactable with the positive and negative input electrodes of the piezoelectric transformer 2, respectively.
3 are formed. As shown in the figure, the conductive films 152 and 153 are led out through signal lines formed by wiring patterns provided on the mating surface side of the thin plates 3 and 4 and the substrate 1. Further, the piezoelectric transformer 2 is
A conductive film 154 that can be electrically contacted with the output electrode is formed. If necessary, the conductive film 154 is led out through a signal line of a wiring pattern provided on the mating surface side of the thin plate 3 or 4 and the substrate 1. You. In this assembly, the thin plates 3 and 4
Are integrated with an adhesive or a double-sided tape.

In the above configuration, the longitudinal support projection 3
6, 37, the width direction support projections 38, 39, 40, 41, and the node support projections 42, 43, 44, 45 have elasticity, and the conductive films 152, 153 are attached to the node support projections 42, 44. Since the conductive member 154 is formed and the conductive film 154 is formed on the longitudinal direction support protrusion 37, each conductive node is supported in a flexible structure (or soft structure) in the thickness direction, the width direction, and the longitudinal direction. The membranes 152, 153, and 154 are connected to the input and output electrodes of the piezoelectric transformer 2, respectively, so that they can be flexibly supported even when the vibration node position is changed or the vibration amplitude is increased due to the change in the vibration frequency. It is possible to restrain the vibration by forcibly restraining the vibrating nodes and to prevent the piezoelectric transformer 2 from being broken without breaking the piezoelectric transformer 2.
Input voltage to the piezoelectric transformer 2
Can output a transformed voltage. Further, the longitudinal direction supporting projections 36 and 37, the width direction supporting projections 38 and 3
9, 40, 41, joint supporting projections 42, 43, 44, 45
In the molding of, punching and bending can be employed, so that production efficiency can be improved, costs can be reduced, and weight can be reduced.

(V) Fifth Embodiment FIGS. 9A to 10B show a fifth embodiment of the present invention. This embodiment discloses a modification in which each supporting projection is supported by a notch in a structure in which the substrate 1 is used as a storage container and the piezoelectric transformer 2 is supported by the thin plates 3 and 4. .

Since the basic structure is the same as that of the fourth embodiment (FIGS. 7A to 8B), only different parts will be described below, and other parts will be described above. Invite. The difference between this embodiment and the fourth embodiment is that each of the longitudinal supporting protrusions 36A, 37A
A, width direction supporting projections 38A, 39A, 40A, 41A,
Each tip of the node supporting projections 42A, 43A, 44A, 45A is bent and raised at a predetermined angle with respect to the extending direction thereof, and the longitudinal supporting projections 37A and the node supporting projections 42 are provided.
A and 44A are formed with conductive films 152, 153 and 154, respectively. In addition, the longitudinal direction support projections 36A, 3
The bending direction of 7A may be configured to protrude in the opposite direction to the mode shown in FIG. 10A or to protrude in a loop shape.

As a result, the longitudinal supporting projections 36A, 37
A, the contact portions of the node supporting protrusions 42A, 43A, 44A, and 45A with the piezoelectric transformer 2 are curved, so that the contact is gentle, and even if the position of the vibrating node changes, a slight displacement occurs. On the other hand, it is possible to apply the input voltage to the piezoelectric transformer 2 reliably by supporting it flexibly, and to output the transformed voltage from the piezoelectric transformer 2. Other operations are the same as those of the fourth embodiment.

(VI) Sixth Embodiment FIG. 11 shows a sixth embodiment of the present invention. This embodiment discloses an example in which a wiring pattern is formed on a support protrusion. As shown in FIG. 11, a wiring pattern 46 made of a conductive material such as a copper vapor-deposited film or an aluminum vapor-deposited film is provided on the inner surface of the thin plate 3 (the surface on the side of the piezoelectric transformer 2). And extends to the nodal support projection 12 at the position where it is located. Although not shown, a wiring pattern 46 is similarly provided on the thin plate 4 so as to be in electrical contact with the other input electrode.
Are formed.

The support member forming the wiring pattern 46 is not limited to the example shown in this embodiment, but can be applied to any of the first to fifth embodiments described above. .

(VII) Seventh Embodiment FIGS. 12 and 13 show a seventh embodiment of the present invention. This embodiment discloses an example in which the contact resistance between the wiring pattern and the input electrode of the piezoelectric transformer 2 is reduced in the case where the wiring pattern is formed on the support protrusion. FIG.
As shown in the figure, the inner surface of the thin plate 4 (the surface on the side of the piezoelectric transformer 2)
Is provided with a wiring pattern 46 made of a conductive material such as a copper vapor-deposited film and an aluminum vapor-deposited film, and extends to the node supporting protrusion 14 at a position corresponding to the input electrode of the piezoelectric transformer 2.

The wiring pattern 46 on the node supporting protrusion 14 is covered with a good conductor film 47 of gold, silver, carbon or the like by plating or vapor deposition. A good conductive material to be coated may be appropriately selected from those which are compatible with the substance used for the input electrode of the piezoelectric transformer 2.
Reference numeral 48 indicates a control circuit chip, and reference numeral 54 indicates solder plating.

FIG. 13 shows a modification of FIG.
The wiring pattern 46 is provided on the flat thin plate 4 and the good conductor film 47 is further provided thereon. On the other hand, in the thin plate 4 of this example, the formation portion of the node supporting projection 14 is depressed in a concave shape. This is an example in which a wiring pattern 46 and a good conductor film 47 are further provided. The other structures relating to the thin plates 3 and 4 are the same as those shown in the second embodiment (FIGS. 3 and 4), and the same portions are denoted by the same reference numerals and description thereof will be omitted.

(VIII) Eighth Embodiment FIG. 14 shows an eighth embodiment of the present invention. This embodiment discloses an example in which thin plates 3 and 4 having low heat resistance can be used. When assembling the piezoelectric transformer, various circuit components are mounted on the substrate or the thin plate 3 or 4, and the circuit pattern is soldered between the circuit components or the electric wiring to the input / output electrodes of the piezoelectric transformer 2. Since the soldering temperature is high, the thin plates 3 and 4 need to use a resin material (for example, a polyimide resin) that does not melt by heat. However, such heat-resistant resin is expensive,
This leads to a rise in manufacturing costs.

Therefore, in this embodiment, the thin plates 3 and 4 are made of inexpensive and low heat-resistant materials, and a heat-resistant resin (for example, a polyimide resin) is overlapped only on necessary portions, so that the overall structure is improved. The cost is reduced. As shown in FIG. 14, the wiring pattern 46 of the thin plate 4
A heat-resistant film 49 is attached between the thin plate 4 and the wiring pattern 46 at and near the portion. Since the heat of soldering is blocked by the heat-resistant film 49, it is not necessary to use a heat-resistant resin for the entire thin plate 4. The thin plate 4 is formed with a convex portion 50 that can accommodate the circuit board 51,
The thin plate 3 is formed with a projection 52 that can accommodate the connection terminal 53.

(IX) Ninth Embodiment FIGS. 15 and 16 show a ninth embodiment of the present invention. This embodiment discloses an improved example regarding the position where the piezoelectric transformer 2 is housed in the substrate. In FIG. 15, a pair of support protrusions 55 and 56 is provided at one end of the substrate 54 along the direction in which the substrate 54 extends, and these support protrusions 5 are provided.
An attachment opening (storage space) 57 is formed between 5 and 56.

On the inner wall surface of the mounting opening 57 (end surface of the substrate 54), a pair of width direction supporting projections 58 corresponding to the vibrating nodes are provided.
Is protruding. On the other hand, a holder (supporting member) 59 having a U-shaped cross section that can be fitted over the supporting protrusions 55 and 56 in a state where the piezoelectric transformer 2 is housed in the mounting opening 57 is provided.

On the side of the holder 59, a width direction supporting projection 58 is provided.
A pair of width direction support protrusions 60 are formed corresponding to the above, and a node support protrusion 61 is formed on the upper surface (and / or the lower surface) corresponding to the vibration node. The holder 59 can be formed by pressing using a sheet-shaped member, or can be formed by injection molding.

At the time of assembling, the holder 59 is fitted so as to hold the supporting protrusions 55 and 56 by sliding with the piezoelectric transformer 2 housed in the mounting opening 57.
The support protrusions 55 and 56 and the holder 59 are bonded and fixed with an adhesive or the like. Note that wiring of an electric circuit can use the method disclosed in the above embodiment. FIGS. 16A and 16B disclose a modification in which the shape of the holder is not a U-shaped cross section but the support members 62 and 63 are configured as two separate members.

That is, A pair of node supporting protrusions 67 and 69 project from the supporting members 62 and 63 corresponding to the vibration nodes of the piezoelectric transformer 2, and conductive films 152 and 153 are formed on the node supporting protrusions 67 and 69. , And the width direction support projection 6
4, 65, 66, and 68 are provided, and a support member is formed in the mode shown in the third embodiment (see FIG. 5A). With this configuration, the degree of freedom in circuit layout of the substrate 54, simplification of assembly, and ease of processing of the substrate 54 are achieved, and the circuit formed on the substrate 54 and the conductive film 15 are formed.
2, 153 can be easily connected.

(X) Tenth Embodiment FIGS. 17 and 18 show an electrode connection structure of a piezoelectric transformer according to a tenth embodiment of the present invention. The electrode connecting structure of the piezoelectric transformer according to the present embodiment is configured such that a concave portion for accommodating the piezoelectric transformer is formed in one of the pair of supporting members so as to sandwich the piezoelectric transformer in a substantially sandwich shape. It is.

This piezoelectric transformer device has the first support member 7
0 and the second support member 7 which is paired with the first support member 70.
1 and a piezoelectric transformer 2 formed in a plate shape. The first support member 70 is formed of a flexible or elastic thin plate made of polyester resin or the like, and is provided with a suitable gap in the center in the width and longitudinal directions of the piezoelectric transformer 2. Storage recess 72 large enough to store 2
Are formed. Semi-cylindrical node support protrusions 75 and 76 projecting toward the second support member 71 are formed on the bottom of the storage recess 72 so as to be able to contact the vibration node of the piezoelectric transformer 2 or a position near the vibration node. , These joint support projections 7
Reference numerals 5 and 76 have appropriate elasticity, and their ends come into contact with the surface of the piezoelectric transformer 2 by line contact (or point contact).

A pair of widthwise supporting projections 79 and 80 opposed to each other are provided on the inner surface in the width direction of the storage recess 72 so as to be able to abut on the vibrating node of the piezoelectric transformer 2 or a position in the vicinity thereof.
And 81, 82 are formed respectively, and the width direction support projection 7 is formed.
9, 80 and 81, 82 have appropriate elasticity, and their ends are in line contact (or point contact) with the surface of the piezoelectric transformer 2.
It comes in contact with.

A pair of opposing longitudinal support projections 83 and 84 are formed on the longitudinal inner surface of the storage recess 72, and similarly, the longitudinal support projections 83 and 84 also have appropriate elasticity. The tips of these have a line contact (or point contact) with the surface of the piezoelectric transformer 2. Storage recess 72 in the longitudinal direction of first support member 70
Positioning holes 73B,
74B is drilled. Further, a rib 111 for reinforcing the first support member 70 is formed on a peripheral portion of the first support member 70.

The second support member 71 is formed of a flexible or elastic thin plate made of polyester resin or the like, and is capable of abutting on the vibration node of the piezoelectric transformer 2 or a position in the vicinity thereof. The node supporting projections 77 and 78 projecting toward the member 70 are formed, and these node supporting projections 7 and 78 are formed.
Reference numerals 7 and 78 have appropriate elasticity, and similarly, their tips come into contact with the surface of the piezoelectric transformer 2 by line contact (or point contact). The second support member 71 has positioning protrusions 73A that can be fitted into the positioning holes 73B and 74B,
74A is protruded.

As shown in FIGS. 17 (B) and 18 (A), the piezoelectric transformer 2
Conductive film 152 electrically contactable with each of the positive and negative input electrodes of
And 153 are formed. These conductive films 152,
As shown, 153 is led out through a signal line of a wiring pattern provided on the mating surface of the first support member 70 and the second support member 72 via an insulator.
In addition, a conductive film 154 that can be in electrical contact with the output electrode is formed on the longitudinal direction support projection 83.
It is led out by a signal line of a wiring pattern provided on the mating surface of the support member 70 and the second support member 72 via an insulator.

The first support member 70 and the second support member 71 are formed by, for example, pressing a film-like or sheet-like plate material. As another processing method, injection molding using a mold can be used. When assembling, the positioning projections 73A and 74A are fitted into the positioning holes 73B and 74B, respectively, and their mating surfaces are integrated by bonding with an adhesive or a double-sided tape, or by heat welding.

In the above configuration, the piezoelectric transformer 2 is
It is accommodated in the accommodating recess 72, and is sandwiched in the width direction by the width direction support projections 79, 80, 81, and 82, and is longitudinally supported in the longitudinal direction by being sandwiched by the longitudinal direction support projections 83, 84. An output electrode is connected to the conductive film 154 formed on the protrusion 83, and furthermore, the node is held elastically (soft structure or soft structure) by the nodal support protrusions 75, 76, 77, 78 in the thickness direction. Part support projection 75,
The input electrodes are connected to the conductive films 152 and 153 formed on the substrate 76, so that a conventional substrate is not required, and even when the vibration node position changes or the vibration amplitude increases due to the fluctuation of the vibration frequency. Each of the conductive films 152, 153, and 154 is connected to the piezoelectric transformer 2 while being flexibly supported.
Can be connected to the input electrode and the output electrode, respectively. The vibration node can be restrained to suppress the vibration, and the input voltage can be reliably applied to the piezoelectric transformer 2 without breaking the piezoelectric transformer 2. The transformed voltage can be output from the piezoelectric transformer 2.

(XI) Eleventh Embodiment FIGS. 19 and 20 show an electrode connection structure of a piezoelectric transformer according to an eleventh embodiment of the present invention. In the electrode connection structure of the piezoelectric transformer according to this embodiment, a pair of support members are formed in contrast, and a storage recess for the piezoelectric transformer is formed in each of the two support members to sandwich the piezoelectric transformer in a substantially sandwich shape. What you want to do.

The electrode connection structure of this piezoelectric transformer has the first
A support member 86 and a second paired with the first support member 86
It comprises a support member 87 and a piezoelectric transformer 2. The first support member 86 is formed of a flexible or elastic thin plate made of a polyester resin or the like. A storage recess 88 having a size capable of storing the second storage portion 2 is formed.

The piezoelectric transformer 2 is provided at the bottom of the storage recess 88.
Semi-cylindrical node support protrusion 9 protruding toward second support member 87 so as to be able to contact the vibration node or a position near the vibration node.
2 and 94 are formed, and these node supporting projections 92 and 94 are formed.
Have appropriate elasticity, and their ends come into contact with the surface of the piezoelectric transformer 2 by line contact (or point contact).

A pair of widthwise supporting projections 96 and 97 opposed to each other are provided on the widthwise inner surface of the storage recess 88 so as to be able to abut on the vibrating node of the piezoelectric transformer 2 or a position in the vicinity thereof.
And 98, 99 respectively. The width direction support projections 96, 97 and 98, 99 have appropriate elasticity so that they come into contact with the surface of the width direction end face of the piezoelectric transformer 2 by line contact (or point contact).

A pair of longitudinal support projections 100 and 101 facing each other are formed on the inner surface in the longitudinal direction of the storage recess 88.
101 also has an appropriate elasticity, and their ends are brought into contact with the longitudinal end face of the piezoelectric transformer 2 by line contact (or point contact).

At a position near the one end of the storage recess 88 in the longitudinal direction of the first support member 86 (attached portion), a positioning projection 90A projecting toward the second support member 87 is provided. The positioning projection 90A is provided at a position where it is fitted into a positioning hole 90B of the second support member 87 described later. Further, a positioning hole 91B is formed in a position (attached portion) near the other end of the storage recess 88, and the positioning hole 91B is used for a second support member 87 described later.
Is provided at a position to be fitted to the positioning projection 91A.

Although not shown, the first support member 86
It is preferable to form a reinforcing rib (see reference numeral 111 in FIG. 17A) for preventing the first support member 86 from bending at the peripheral edge of the first support member 86. The second support member 87 has a symmetrical structure with the first support member 86, that is, the second support member 87 is formed by turning the first support member 86 in the opposite direction. For convenience, each component is denoted by a different reference numeral, but the configuration itself is the same as that of the first support member 86. In this way, by using a symmetrical structure, only one type of die is required for press working or injection molding, which is advantageous in terms of the number of component types, manufacturing labor, and manufacturing cost.

In the second support member 87, a storage recess 89 large enough to store the piezoelectric transformer 2 is formed in the center of the second support member 87 with an appropriate gap in the width and longitudinal directions of the piezoelectric transformer 2. Semi-cylindrical node support protrusions 93 and 95 projecting toward the first support member 86 are formed at the bottom of the storage recess 89 so as to be able to contact the vibration node of the piezoelectric transformer 2 or a position near the vibration node. , These joint supporting projections 93, 9
5 have appropriate elasticity, and their tips are
Is brought into contact with the surface by line contact (or point contact).

On the inner surface in the width direction of the storage recess 89, a pair of width-direction supporting projections (FIG.
(See (A) the width-direction support projections 96 and 97 and 98 and 99). A pair of opposed longitudinal support protrusions 102, 103 are formed on the longitudinal inner surface of the storage recess 89, and similarly, the longitudinal support protrusions 102, 103 also have appropriate elasticity, The tips of the tips abut on the end faces in the longitudinal direction of the piezoelectric transformer 2 by line contact (or point contact).

At a position near the other end of the storage recess 89 in the longitudinal direction of the second support member 87 (adhering portion), a positioning protrusion 91A protruding toward the first support member 86 is provided. The positioning projection 91A is provided at a position where the positioning projection 91A fits into the positioning hole 91B of the first support member 86. A positioning hole 90 </ b> B is formed near one side end of the storage recess 89 (attached portion), and the positioning hole 90 </ b> B is formed in the positioning protrusion 9 of the first support member 86.
It is provided at a position where it fits with 0A. Although not shown, a reinforcing rib (FIG. 17) for preventing bending of the second support member 87 is also provided on a peripheral portion of the second support member 87.
(See reference numeral 111 in (A)).

As shown in FIG. 19 (B), conductive films 152 and 153 which can electrically contact the positive and negative input electrodes of the piezoelectric transformer 2 are formed on the node supporting protrusions 92 and 93, respectively. ing. As shown, these conductive films 152 and 153 are led out through signal lines formed by wiring patterns provided on the first support member 86 and the second support member 87. The piezoelectric transformer 2 is provided in the longitudinal support projection 100.
A conductive film 154 capable of electrically contacting the output electrodes of the first and second support members 86 and 8 is formed as necessary.
7 is led out to the outside by a signal line of a wiring pattern provided on the mating surface with an insulator via an insulator.

The first support member 86 and the second support member 87 can be formed by press working or injection molding of a film or sheet plate. In assembling, the positioning projections 90A and 91A and the positioning holes 90B and 91B are fitted respectively, and the mating surfaces are integrated by bonding with an adhesive or a double-sided tape or by heat welding.

In the above configuration, the piezoelectric transformer 2 is
It is housed in the housing recess 88, is sandwiched in the width direction by the width direction support projections 96 to 99, and is held in the longitudinal direction by the longitudinal direction support projection 83 while being sandwiched by the longitudinal direction support projections 100 and 101. The formed conductive film 15
4 is connected to an output electrode, and further elastically (soft structure or soft structure) by the node supporting protrusions 92 to 95 in the thickness direction.
The input electrodes are connected to the conductive films 152 and 153 formed on the node supporting protrusions 75 and 76 in a state of being sandwiched between them, and the vibration accompanying the fluctuation of the vibration frequency can be achieved without using a conventional substrate. Each conductive film 15 is kept flexibly supported even when the position of the node is changed or the vibration amplitude is increased.
2, 153 and 154 can be connected to the input electrode and the output electrode of the piezoelectric transformer 2, respectively, and the vibration nodes are restrained to suppress the vibration forcibly or to the piezoelectric transformer 2 without breaking the piezoelectric transformer 2. The input voltage can be reliably applied, and the transformed voltage can be output from the piezoelectric transformer 2.

(XII) Twelfth Embodiment FIGS. 21 and 22 show an electrode connection structure of a piezoelectric transformer according to a twelfth embodiment of the present invention. The electrode connection structure of the piezoelectric transformer according to the present embodiment always applies tension to the longitudinal end of the piezoelectric transformer 2 in a favorable state in consideration of the displacement of the longitudinal end of the piezoelectric transformer 2 during vibration. , Which are examples that can be supported.

Since the basic structure is the same as that of the eleventh embodiment (FIGS. 19 and 20), only the different parts will be described below, and the same parts will be denoted by the same reference numerals. The description of the embodiment is cited. This embodiment differs from the eleventh embodiment in that one end face of the piezoelectric transformer 2 in the longitudinal direction and the first support member 8
6 and the second support member 87, the ring portion 107 of the pressure contact body 106 is interposed, and similarly, between the other end face in the longitudinal direction of the piezoelectric transformer 2 and the first support member 86 and the second support member 87. The ring portion 109 of the pressure contact body 108 is interposed. In addition, the conductive film 152, the conductive layer 152, the node supporting protrusions 92, 93 projecting into the storage recesses 88, 89, respectively.
53, and this conductive film 152 is
In this configuration, the conductive film 153 is drawn out to the outside through the space between the width direction support protrusions 96 and 102.

As can be seen from the shape, the ring portions 107 and 109 are pressed against the longitudinal end face of the piezoelectric transformer 2 and thus give an appropriate tension to the longitudinal end face of the piezoelectric transformer 2. The displacement of the longitudinal end of the piezoelectric transformer 2 at the time of vibration describes an arc-shaped trajectory (vibration in the vertical direction in FIG. 21B) with each vibrating node as a center. Since the ring portions 107 and 109 having appropriate elasticity are in contact with the longitudinal end surfaces of the piezoelectric transformer 2, the piezoelectric transformer 2 can be supported with an appropriate degree of freedom without restricting the movement of the longitudinal end portions. In addition, since a good pressure contact state can always be maintained, particularly, for example, the ring portion 107 is connected to the piezoelectric transformer 2.
When the electrode is in contact with the output electrode formed on the end face in the longitudinal direction, it is possible to always keep good electrical contact. The ring portions 107 and 109 may be formed in a hook shape or a hook shape. Other operations are the same as those of the first embodiment.

(XIII) Thirteenth Embodiment FIGS. 23 and 24 show an electrode connection structure of a piezoelectric transformer according to a thirteenth embodiment of the present invention.

The electrode connecting structure of the piezoelectric transformer according to this embodiment is formed of a flexible or elastic thin plate like the embodiment shown in FIGS. 17 and 18. The piezoelectric transformer 2 is supported in a sandwich manner by the first support member 70 and the second support member 71, and the node support protrusions 75A, 76A, 77A formed on the first support member 70 and the second support member 71, respectively. , 78A (FIG. 1)
7 and FIG. 18), width-direction support projections 79A, 80A, 81A, 82A (equivalent to 89-82 in FIGS. 17 and 18) and longitudinal direction support projections 83A, 84A (FIG. 17). 17 and FIG.
84 corresponding to the vibrating nodes of the piezoelectric transformer 2 are protruded and formed at the corresponding positions in the vicinity of the vibrating nodes. , 154 are formed.

The longitudinal supporting projections 83A and 84A, the width supporting projections 79A, 80A, 81A and 82A, and the node supporting projections 75A, 76A, 77A and 78A are composed of a first supporting member 70 and a second supporting member. 71 is formed by punching and bending. As other molding methods,
When a resin material is used for the first support member 70 and the second support member 71, injection molding using a mold can be used. In this embodiment, each of the longitudinal supporting projections 83A and 84A, and the width supporting projections 79A, 80A and 8A.
1A, 82A, joint supporting projections 75A, 76A, 77A,
Each tip of 78A is bent and raised at a predetermined angle to these extending directions. In addition, the longitudinal direction support projection 83
The bending direction of A and 84A may be configured to protrude in the opposite direction to the mode shown in FIG. In addition, each of the tip portions may be configured to extend only in these extending directions.

As a result, the longitudinal supporting projections 83A, 84
A, the contact portions of the node supporting protrusions 75A, 76A, 77A, and 78A with the piezoelectric transformer 2 are curved, so that the contact is gentle, and even if the position of the vibrating node changes, a slight displacement occurs. This allows flexible support.

In the above configuration, the longitudinal support projection 8
3A, 84A, width direction supporting projections 79A, 80A, 81
A, 82A, knot supporting projections 75A, 76A, 77A, 7
8A has elasticity, and conductive films 152 and 153 are formed on the node supporting protrusions 75A and 77A, and a conductive film 154 is formed on the longitudinal supporting protrusion 83A. Each conductive film 152 is supported in a soft structure (or soft structure) in the direction, width direction and longitudinal direction.
153 and 154 are connected to the input electrode and the output electrode of the piezoelectric transformer 2, respectively, so that they can be flexibly supported even when the vibration node position is changed or the vibration amplitude is increased due to the fluctuation of the vibration frequency. It is possible to reliably apply the input voltage to the piezoelectric transformer 2 without restraining the vibration by forcing the node and to break the piezoelectric transformer 2 and to reliably output the voltage transformed from the piezoelectric transformer 2. it can. In addition, the longitudinal direction support projection 83
A, 84A, width direction support projections 79A, 80A, 81A,
82A, knot supporting projections 75A, 76A, 77A, 78A
In the molding of, punching and bending can be employed, so that the production rate can be improved, the cost can be reduced, and the weight can be reduced.

(XIV) Fourteenth Embodiment FIG. 25 shows an electrode connection structure of a piezoelectric transformer according to a fifth embodiment of the present invention.

The electrode connecting structure of the piezoelectric transformer according to this embodiment has a structure in which the first support member 7 supporting one of the vibrating nodes is provided.
The joint support projections 76B and 76E of the second support member 71 and the respective ends of the joint support projections 76C and the surface of the piezoelectric transformer 2 have respective gaps 76D and 76E.
B, 76C are formed, and the longitudinal support projection 84 is formed.
B, 84C and 83B, 83C are formed so as to leave gaps 84D, 83D between the piezoelectric transformer 2 and the longitudinal end surfaces thereof. The appropriate lengths of the gaps 84D and 83D are set by experimentally and empirically obtaining a possible change in vibration frequency and a fluctuation width of vibration amplitude. In addition, the node support protrusion 75B of the first support member 70 and the second support member 71
The conductive films 152 and 153 are formed on the nodal portion supporting projection 75C, and the conductive films 152 and 153 are connected to the input electrodes of the piezoelectric transformer 2.

As described above, one of the vibrating nodes of the piezoelectric transformer 2 and the longitudinal direction are spaced by the intervals 76D, 76E, 83D, 84D.
And the other of the vibrating nodes is connected to the node supporting protrusions 75 on which the conductive films 152 and 153 are formed.
B and 75C, the piezoelectric transformer 2 is flexibly supported even when the vibration node position fluctuates or the vibration amplitude increases due to the fluctuation of the vibration frequency, and the electrodes of the piezoelectric transformer 2 reliably contact the electrodes. The piezoelectric transformer 2 can reliably apply an input voltage to the piezoelectric transformer 2 without damaging the piezoelectric transformer 2 without restraining the vibration nodes, and can output a voltage transformed from the piezoelectric transformer 2. can do. That is, even if the vibrating node is set in advance as a position corresponding thereto, the position may be different from the previously set position depending on the ratio of the thickness, width, length, and the like of the piezoelectric transformer 2. Even in such a case, the piezoelectric transformer 2 can be freely supported at a predetermined vibration amplitude without suppressing the vibration of the piezoelectric transformer 2 itself.
B, 76C and longitudinal support projections 84B, 84C, 83
B, 83C and the gap 76C between the piezoelectric transformer 2 and
76E, 84D and 83D are placed so that the position of the true vibrating node of the piezoelectric transformer 2 due to the vibration of the piezoelectric transformer 2 is formed without forming a gap. , 75C to be naturally moved and supported. Note that the transformed output voltage of the piezoelectric transformer 2 in the case of the present embodiment is output from this lead-out wiring by directly connecting a flexible lead-out wiring to the side end of the piezoelectric transformer 2 by soldering or the like. Can be.

(XV) Fifteenth Embodiment FIG. 26 shows an electrode connection structure of a piezoelectric transformer according to a fifteenth embodiment of the present invention. The electrode connecting structure of the piezoelectric transformer according to the present embodiment provides an appropriate tension to support the longitudinal end of the piezoelectric transformer 2 as in the twelfth embodiment. An example in which electrodes are provided is disclosed.

In the electrode connection structure of the piezoelectric transformer according to this embodiment, an example is shown in which support substrates 113 and 115 are used as support members in addition to the storage recess 88 and the storage recess 89, but the support device itself is used. Can be applied, for example, to the one disclosed in the twelfth embodiment, and is not limited to this embodiment. As shown in FIG. 26, a pair of a first support member 86 and a second support member 87
Are formed with accommodating recesses 88, 89, respectively, and node supporting protrusions 92, 93, 94, 95 are formed corresponding to the vibrating nodes of the piezoelectric transformer 2 or positions in the vicinity thereof.

A support substrate 113 is interposed between the first support member 86 and the second support member 87, and the first support member 86a
A support substrate 115 is interposed between the first support member 87a and the second support member 87a. On opposing surfaces of the support substrate 115, wiring patterns 116 and 129 are formed in a state of being electrically insulated from each other.

The wiring pattern 116 has the node supporting protrusion 92
An electrode support protrusion 117 made of an insulating sheet (or film) extends so as to be interposed between the electrode support and one (positive side +) input electrode of the piezoelectric transformer 2. The electrode support protrusion 117 is formed on the electrode support protrusion 117. One of the wiring patterns 118 is electrically connected to the wiring pattern 116 at the connection portion 127 by soldering or the like, and the other of the wiring patterns 118 is pressed into contact with the node supporting protrusions 92 so that the input of the piezoelectric transformer 2 is It is in electrical contact with the electrode 119.

Similarly, an electrode support projection made of an insulating sheet (or film) is provided on the wiring pattern 129 so as to be interposed between the node support projection 93 and the other (negative side) input electrode of the piezoelectric transformer 2. One of the wiring patterns 124 formed on the electrode support protrusion 123 is electrically connected to the wiring pattern 129 at the connection portion 128 by soldering or the like.
Of the piezoelectric transformer 2 is electrically in contact with the other (negative side) input electrode 125 of the piezoelectric transformer 2 in a form in which the other is pressed against the node supporting protrusion 93.

The base end of the support projection 120 is electrically connected to the wiring pattern 114 formed on the surface of the instruction board 113 by soldering or the like, and the tip of the support projection 120 is bent in an arc shape. It is in electrical contact with the output electrode 122 of the piezoelectric transformer 2. Support projection 120 and output electrode 122
The contact portion 121 may be kept pressed or may be fixed by soldering or the like. Note that the piezoelectric transformer 2
Between the other end in the longitudinal direction and the support base 115
26 may be attached and energized. In addition, the pointing protrusion 120
May have a ring shape as shown by a broken line, and may have a form as shown in FIG.

As described above, by providing the electric wiring patterns for the positive and negative input force electrodes and the output electrodes in parallel, necessary wiring is performed simultaneously with the assembling, so that the assembling process can be simplified. It should be noted that the first support member 86 and the second support member 87 are made of inexpensive and highly processable polyester resin, and are not particularly required to have heat resistance. On the other hand, the electrode supporting projections 117 and 123 are also formed of a resin film (or sheet). However, since soldering is performed, heat resistance is required rather than workability.
For example, it is preferable to use a heat-resistant resin such as a polyimide resin.

(XVI) Sixteenth Embodiment FIG. 27 shows an electrode connection structure of a piezoelectric transformer according to a sixteenth embodiment of the present invention. The electrode connection structure of the piezoelectric transformer according to this embodiment is provided with a storage recess capable of storing a drive circuit or a control circuit of the piezoelectric transformer 2 so as to integrate the piezoelectric transformer 2 with the drive circuit or the control circuit. An example is disclosed.

The basic structure is the electrode connection structure of the piezoelectric transformer according to the tenth embodiment (FIGS. 17 and 18).
Since only the different parts are explained below,
The same portions are denoted by the same reference numerals, and a detailed description thereof will be omitted. In this embodiment, a circuit housing 141 for housing a circuit board 147 is formed in the first support member 70, and a circuit element 148 constituting a drive circuit or a control circuit is mounted inside the circuit housing 141. The substrate 147 is housed, and the space inside the circuit housing 141 is filled with a resin 151 as necessary. Reference numeral 149 denotes a wiring connecting the circuit including the circuit element 148 and the output electrode of the piezoelectric transformer 2, and reference numeral 150 denotes a wiring for connecting to an external circuit.

As described above, according to the present embodiment, the required strength can be secured without using the conventional substrate, and not only can the piezoelectric transformer 2 be supported by the first support member 70 and the second support member 71, but also The circuit board 147 can also be supported, and downsizing as the piezoelectric transformer device is achieved.

(XVII) Application Examples The scope of the present invention is not limited to the above embodiments, and various modifications and applications are possible as described below.
That is, in each of the embodiments described above, the piezoelectric transformer having two vibration nodes is described as an example. However, the present invention is directed to a piezoelectric transformer having another vibration pattern, for example, a tertiary rosen (vibration). The present invention can also be applied to a type of piezoelectric transformer having three nodes).

[0109]

As described above, according to the present invention, the width direction and the length direction of the piezoelectric transformer are supported by the width direction protrusion and the lengthwise support protrusion provided in the mounting opening of the substrate. The vibrating nodes of the piezoelectric transformer are supported by elastic node supporting projections provided on a separate supporting member. Since the vibrating nodes of the piezoelectric transformer are supported by the elastic node supporting protrusions as described above, the vibrating nodes can be supported with an appropriate degree of freedom without restraining the vibrating nodes in a fixed manner to suppress vibration. it can. As a result, it is possible to adapt to an increase in vibration amplitude at the time of high output, and it is possible to prevent breakage of the piezoelectric transformer. Further, the piezoelectric element can be properly supported without suppressing vibration even when the vibration node position changes due to the fluctuation of the vibration wave number due to a change in environmental conditions or the like. In addition, since the signal provided to the input electrode of the piezoelectric transformer can be supplied by the conductor provided on the support projection, the conventional wiring and soldering are not required, facilitating assembly, and thermal effects of soldering. Can be avoided. Further, according to the present invention, the width direction and the length direction of the piezoelectric transformer are supported by the width direction support projection and the length direction support projection provided in the mounting opening of the board, and the piezoelectric transformer is supported by a separate support member. The vibrating nodes of the piezoelectric transformer are supported by the provided elastic node supporting projections, and the conductor provided on the node supporting projections is brought into contact with the electrodes of the piezoelectric transformer. The vibrating nodes of the piezoelectric transformer are supported by the node supporting protrusions, so that it can be adapted to the increase in the vibration amplitude at the time of high output, preventing breakage of the piezoelectric transformer and securing the vibrating nodes. There is an effect that the conductor and the electrode of the piezoelectric transformer can be connected with a suitable degree of freedom without restraining vibration. Further, the piezoelectric element can be properly supported without suppressing vibration even when the vibration node position changes due to the fluctuation of the vibration wave number due to a change in environmental conditions or the like. In addition, since the conductors provided on the support protrusions can receive signals to the electrodes of the piezoelectric transformer, conventional wiring and soldering are not required, facilitating assembly and thermal effects of soldering. Can be avoided. Further, according to the present invention, since each support protrusion can be formed by cutting and raising,
The width direction support projection, the longitudinal direction support projection, and the knot support projection can be easily formed, the support strength and the amount of elasticity can be adjusted, and the weight can be reduced due to the notch and cutting. In addition, the conductor provided on each of the support protrusions formed as described above has an effect that the conductor can be easily and reliably connected to the electrode of the piezoelectric transformer. In addition, since the signal provided to the input electrode of the piezoelectric transformer can be supplied by the conductor provided on the support projection, the conventional wiring and soldering are not required, facilitating assembly, and thermal effects of soldering. Can be avoided. Further, according to the present invention, since each tip of each support projection is formed by bending in the thickness direction, the support strength and elasticity of the width direction support projection, the longitudinal direction support projection, and the node support projection are provided. Can be adjusted, and the conductor provided on each of the support protrusions formed as described above has an effect that the conductor can be more reliably connected to the electrode of the piezoelectric transformer. In addition, the conductors provided on the support projections allow signals to be received to the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, simplifying assembly and reducing the thermal effects of soldering. Can be avoided. Further, according to the present invention, since each support protrusion is formed by press working, it is easy to form the width direction support protrusion, the longitudinal direction support protrusion, and the node support protrusion, and the vibration node of the piezoelectric transformer is formed. It is possible to adjust the supporting strength and the amount of elasticity for properly supporting the piezoelectric transformer without excessively suppressing the piezoelectric transformer. It has the effect of being able to connect to the electrodes. In addition, the conductors provided on the support projections allow signals to be received to the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, simplifying assembly and reducing the thermal effects of soldering. Can be avoided. Further, according to the present invention, the conductor provided on the node supporting protrusion located at one of the vibration nodes of the piezoelectric transformer abuts and supports one of the opposing vibration nodes,
Since the node supporting protrusion located on the other side has a gap between the opposing vibrating node and supports the vibrating node in a loosely fitted state, it is more free without excessively suppressing the vibrating node. The conductor provided on the node supporting protrusion located on one side in a state where it is properly supported in an appropriate state has an effect of connecting to the electrode of the piezoelectric transformer. In addition, the conductors provided on the joint supporting projections enable signals to be received to the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring, soldering, etc., facilitating assembly and reducing the heat of soldering. In addition, according to the present invention, the longitudinal support projection has a gap between itself and the longitudinal end face of the piezoelectric transformer to support the piezoelectric transformer in a loose fit state, and A node supporting projection located at the vibration node supports the vibration node in a loosely fitted state with a gap between the other node and the conductor provided on the node supporting projection; Is brought into contact with the electrode of the piezoelectric transformer, so that a degree of freedom is given also in the longitudinal direction, and the conductor provided on the node supporting protrusion in a state of being properly supported without excessively suppressing the vibration node. Can be electrically connected to the electrodes of the piezoelectric transformer. I do. In addition, since the conductor provided on the node supporting protrusion enables signal reception to the electrode of the piezoelectric transformer, the conventional wiring,
This eliminates the need for soldering or the like, facilitating assembly and avoiding the thermal effects of soldering. According to the present invention,
The piezoelectric transformer is supported by a first support member and a second support member, and a conductor is formed on a support protrusion provided on at least one of the first support member and the second support member. In addition, there is an effect that a substrate as in the related art is not required, the number of component types can be reduced, and the conductor can be connected to the electrode of the piezoelectric transformer. In addition, even in such a structure including only the support member, the vibration node portion of the piezoelectric transformer is supported by the node support protrusion having elasticity.
The vibrating node can be supported with an appropriate degree of freedom without restraining the vibration node portion from restraining vibration. As a result, it is possible to adapt to an increase in vibration amplitude at the time of high output, and it is possible to prevent breakage of the piezoelectric transformer. Further, the piezoelectric transformer can be appropriately supported without suppressing the vibration even when the vibration node position changes due to the fluctuation of the vibration wave number due to the change of the environmental condition or the like. In addition, the conductors provided on the support projections allow signals to be received from the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, simplifying assembly and reducing the thermal effects of soldering. In addition, according to the present invention, the conventional substrate is not required, the number of component types can be reduced, and the conductor can be connected to the electrode of the piezoelectric transformer. Further, even with such a structure including only the support member, it is possible to adapt to an increase in the vibration amplitude at the time of high output, and it is possible to prevent the piezoelectric transformer from being broken. In addition, even when the vibration node position changes due to a change in the vibration wave number due to a change in environmental conditions, the piezoelectric transformer can be properly supported without suppressing the vibration. In addition, the conductors provided on the support projections allow signals to be received to the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, simplifying assembly and reducing the thermal effects of soldering. Can be avoided. Further, according to the present invention, the piezoelectric transformer does not require a substrate as in the related art, so that it is possible to reduce the number of parts and to connect the conductor to the electrode of the piezoelectric transformer. In addition, even with such a structure including only the support member, it can be adapted to an increase in the vibration amplitude at the time of high output, and has an effect of preventing the piezoelectric transformer from being broken. In addition, the present invention has the effect of properly supporting the piezoelectric transformer without suppressing vibration even when the vibration node position fluctuates due to fluctuations in the vibration wave number due to changes in environmental conditions and the like. In addition, the conductors provided on the support projections allow signals to be received to the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, simplifying assembly and reducing the thermal effects of soldering. Can be avoided. Further, according to the present invention, the conventional substrate is not required, the number of component types can be reduced, and there is an effect that the conductor can be connected to the electrode of the piezoelectric transformer. In addition, even with such a structure including only the support member, it can be adapted to an increase in the vibration amplitude at the time of high output, and has an effect of preventing the piezoelectric transformer from being broken. In addition, the present invention has the effect of properly supporting the piezoelectric transformer without suppressing vibration even when the vibration node position fluctuates due to fluctuations in the vibration wave number due to changes in environmental conditions and the like. In addition, the conductors provided on the support projections allow signals to be received to the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, simplifying assembly and reducing the thermal effects of soldering. Can be avoided. Further, according to the present invention, only one type of support member is required, so that it is possible to reduce the number of types of parts and to omit the processing steps, and it is possible to connect the conductor to the electrode of the piezoelectric transformer. In addition, it can be adapted to an increase in vibration amplitude at the time of high output, and has an effect of preventing breakage of the piezoelectric transformer. In addition, the present invention has an effect of appropriately supporting the piezoelectric transformer without suppressing vibration even with respect to a change in the position of the vibration node caused by a change in the vibration wave number due to a change in environmental conditions and the like. In addition, the conductors provided on the support projections allow signals to be received to the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, simplifying assembly and reducing the thermal effects of soldering. Can be avoided. Further, according to the present invention, it is possible to connect the conductor to the electrode of the piezoelectric transformer in a state in which the longitudinal end face of the piezoelectric transformer is always urged with a constant pressing force by the pressure contact body and is well supported with an appropriate degree of freedom. Has an effect.
Further, it can be adapted to an increase in the vibration amplitude at the time of high output, and has an effect of preventing breakage of the piezoelectric transformer. In addition, the present invention has the effect of properly supporting the piezoelectric transformer without suppressing vibration even when the vibration node position fluctuates due to fluctuations in the vibration wave number due to changes in environmental conditions and the like. In addition, the conductors provided on the support projections allow signals to be received to the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, simplifying assembly and reducing the thermal effects of soldering. Can be avoided. Further, according to the present invention, the circuit necessary for driving the piezoelectric transformer can be integrated with the piezoelectric transformer by the circuit housing portion, so that the device configuration can be made compact and the conductor can be used as the piezoelectric transformer. It has the effect of being able to connect to the electrodes. Further, it can be adapted to an increase in the vibration amplitude at the time of high output, and has an effect of preventing breakage of the piezoelectric transformer. Also, with respect to the fluctuation of the vibration node position caused by the fluctuation of the vibration wave number due to the change of environmental conditions etc.,
This has the effect of properly supporting the piezoelectric transformer without suppressing vibration. In addition, since the conductor provided on the support protrusion enables signal reception to the electrodes of the piezoelectric transformer, conventional wiring and soldering are not required,
This facilitates assembly and avoids the thermal effects of soldering.

[Brief description of the drawings]

FIG. 1A is a plan view showing the inside of an electrode connection structure of a piezoelectric transformer according to a first embodiment of the present invention.
FIG. 2B is a plan view showing an electrode connection structure of the piezoelectric transformer according to the first embodiment of the present invention.

FIG. 2A is a diagram showing a first embodiment of the present invention;
It is AA sectional drawing of. (B) is a BB sectional view of FIG. 1 according to the first embodiment of the present invention.

FIG. 3A is a plan view showing the inside of an electrode connection structure of a piezoelectric transformer according to a second embodiment of the present invention. (B) It is a top view showing the electrode connection structure of the piezoelectric transformer concerning a 2nd embodiment of the present invention.

FIG. 4 (A) is a diagram according to a second embodiment of the present invention;
It is CC sectional drawing of. (B) is a DD sectional view of FIG. 3 according to the second embodiment of the present invention.

FIG. 5A is a plan view showing the inside of an electrode connection structure of a piezoelectric transformer according to a third embodiment of the present invention.
(B) is a plan view showing an electrode connection structure of a piezoelectric transformer according to a third embodiment of the present invention.

FIG. 6A is a diagram according to a third embodiment of the present invention;
It is EE sectional drawing of. (B) is FF sectional drawing of FIG. 5 which concerns on 3rd Embodiment of this invention.

FIG. 7A is a plan view showing the inside of an electrode connection structure of a piezoelectric transformer according to a fourth embodiment of the present invention. (B) It is a top view showing the electrode connection structure of the piezoelectric transformer concerning a 4th embodiment of the present invention.

FIG. 8A is a diagram showing a fourth embodiment of the present invention;
GG sectional view of FIG. (B) is an HH sectional view of FIG. 7 according to the fourth embodiment of the present invention.

FIG. 9A is a plan view showing the inside of an electrode connection structure of a piezoelectric transformer according to a fifth embodiment of the present invention.
(B) is a plan view showing an electrode connection structure of a piezoelectric transformer according to a fifth embodiment of the present invention.

FIG. 10A is a sectional view taken along line II of FIG. 9 according to a fifth embodiment of the present invention. (B) is JJ sectional drawing of FIG. 9 which concerns on 5th Embodiment of this invention.

FIG. 11 is a partially cutaway perspective view showing a sixth embodiment of the present invention.

FIG. 12 is an exploded perspective view according to a seventh embodiment of the present invention.

FIG. 13 is a partially enlarged perspective view according to a seventh embodiment of the present invention.

FIG. 14 is an exploded perspective view according to a ninth embodiment of the present invention.

FIG. 15 is a perspective view showing another example of the support member according to the ninth embodiment of the present invention.

FIG. 16A is a perspective view showing an example of another support member according to the ninth embodiment of the present invention. (B) is KK sectional drawing of FIG.15 (B) which concerns on 9th Embodiment of this invention.

FIG. 17A is a plan view of an electrode connection structure of a piezoelectric transformer according to a tenth embodiment of the present invention. FIG. 17B is a sectional view taken along line LL in FIG.

18A is a sectional view taken along line MM in FIG. 17A. (B) is a front view of the electrode connection structure of the piezoelectric transformer according to the tenth embodiment. (C) is a side view of the electrode connection structure of the piezoelectric transformer according to the tenth embodiment.

FIG. 19A is a plan view of an electrode connection structure of a piezoelectric transformer according to an eleventh embodiment of the present invention. FIG. 20B is a sectional view taken along line NN in FIG.

20A is a cross-sectional view taken along the line OO in FIG. 19A. (B) is a front view of the electrode connection structure of the piezoelectric transformer according to the electrode connection structure of the piezoelectric transformer according to the eleventh embodiment. (C) is a side view of the electrode connection structure of the piezoelectric transformer according to the eleventh embodiment.

FIG. 21A is a plan view of an electrode connection structure of a piezoelectric transformer according to a twelfth embodiment of the present invention. (B) is a sectional view taken along the line PP in FIG. 21 (A).

FIG. 22A is a sectional view taken along line QQ in FIG. (B) is a front view of the electrode connection structure of the piezoelectric transformer according to the twelfth embodiment. (C) is a side view of the electrode connection structure of the piezoelectric transformer according to the twelfth embodiment.

FIG. 23A is a plan view of an electrode connection structure of a piezoelectric transformer according to a thirteenth embodiment of the present invention. (B) is a bottom view of FIG. 23.

FIG. 24A is a sectional view taken along line RR in FIG. 23; (B) is a sectional view taken along the line SS in FIG. 23.

FIG. 25A is a sectional view of an electrode connection structure of a piezoelectric transformer according to a fourteenth embodiment of the present invention. (B) is a sectional view of an electrode connection structure of a piezoelectric transformer according to a fourteenth embodiment of the present invention.

FIG. 26 is a sectional view of an electrode connection structure of a piezoelectric transformer according to a fifteenth embodiment of the present invention.

FIG. 27 is a sectional view of an electrode connection structure of a piezoelectric transformer according to a sixteenth embodiment of the present invention.

FIG. 28A is a plan view showing a main part of a conventional electrode connection structure of a piezoelectric transformer. (B) is a perspective view showing a main part of a conventional electrode connection structure of a piezoelectric transformer.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Substrate 2 Piezoelectric transformer 3 Thin plate 4 Thin plate 5, 6 Longitudinal support protrusion 7, 8, 9, 10 Width support protrusion 11 Mounting opening 12, 13, 14, 15 Node support protrusion 16, 17, 18 , 19 positioning projections 20, 21 positioning holes 22, 23 longitudinal supporting projections 24, 25, 26, 27, 28 width supporting projections 28, 29 longitudinal supporting projections 30, 31 supporting projections 32 longitudinal gap 33 Longitudinal gap 34 Node gap 35 Node gap 36, 37 Longitudinal support protrusion 38, 39, 40, 41 Width direction support protrusion 42, 43, 44, 45 Knot support protrusion 46 Wiring pattern 47 Good conductor layer 48 Control circuit chip 49 Heat-resistant film 50 Depression 51 Rectification circuit board 52 Storage projection 53 Terminal 54 Board 55 Support projection 56 Support projection 57 Mounting opening 58 Width support projection 59 E Da (support member) 60 width direction support projection 61 node support projection 62 thin plate 63 thin plate 64 width direction support projection 65 width direction support projection 66 width direction support projection 67 node support projection 68 width direction support projection Part 69 Knot support protrusion 70 First support member 71 Second support member 72 Storage recess 73, 74 Positioning protrusion 75, 76, 77, 78 Knot support protrusion 79, 80, 81, 82 Width direction support protrusion 83, 84 Longitudinal support protrusions 86, 86a First support members 87, 87a Second support members 88, 89 Storage recesses 90 91 Positioning protrusions 92, node support protrusions 93, 94, 95 96 97, 98, 99 Width direction support protrusions 100, 101, 102, 103, 104, 105 Longitudinal direction support protrusions 106, 108 Press-contact body 107, 109 Ring unit 110 Drive circuit 111 Rib 113, 115 Substrate 114, 116, 118, 119, 124, 125, 1
29 Wiring pattern 117, 123 Electrode support protrusion 120 Support protrusion 121 Contact portion 126 Support protrusion 127, 128 Connection 141 Circuit storage recess 147 Circuit board 148 Circuit element 149, 150 Wiring 151 Filling resin 152, 153, 154, 155 conductive film

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01L 41/107 H01L 41/22

Claims (16)

(57) [Claims] 1. A widthwise support that has a size capable of accommodating the piezoelectric transformer with a gap around the plate-shaped piezoelectric transformer in the width direction and the longitudinal direction, and abuts on the widthwise end surface of the piezoelectric transformer. A substrate having an attachment opening provided with a projection and a longitudinal support projection abutting on a longitudinal end surface, and a thin plate having flexibility or elasticity;
Has a joint support projection formed by projecting a part of the
And a support member nodal unit support protrusion abuts against the vibration node portions of the housed piezoelectric transformer before Symbol mounting opening, a conductor in electrical contact with the piezoelectric transformer of the electrode to the support projections An electrode connection structure for a piezoelectric transformer, wherein the electrode connection structure is provided. 2. A substrate provided with a mounting opening capable of accommodating a piezoelectric transformer with a gap around a width and a longitudinal direction of the plate-shaped piezoelectric transformer, and a piezoelectric accommodating in the mounting opening. A width-direction support projection that contacts the width-direction end surface of the transformer, a longitudinal direction support projection that contacts the longitudinal direction end surface, and a node support projection that contacts the vibration node of the piezoelectric transformer. A supporting member formed of a thin plate material having flexibility or elasticity, wherein the node supporting protrusion is provided with a conductor electrically contacting an electrode of the piezoelectric transformer. Electrode connection structure. 3. The electrode connection structure for a piezoelectric transformer according to claim 2 , wherein the support member formed of the flexible or elastic thin plate material includes the width-direction support protrusion, the longitudinal-direction support protrusion, and An electrode connection structure for a piezoelectric transformer, wherein the node supporting projection is formed by a projection formed by cutting and raising each corresponding position in the thin material. 4. The electrode connecting structure for a piezoelectric transformer according to claim 3 , wherein each end of the width-direction supporting projection, the longitudinal-direction supporting projection, and the node supporting projection is bent in a thickness direction. An electrode connection structure for a piezoelectric transformer. 5. The electrode connecting structure for a piezoelectric transformer according to claim 2, wherein the supporting portion is formed of a thin plate having flexibility and elasticity.
The material includes the width-direction support protrusion, the longitudinal-direction support protrusion, and the node.
The support projections are pressed at each corresponding position on the thin plate.
An electrode connection structure for a piezoelectric transformer, wherein the electrode connection structure is formed by protrusions . 6. A substrate provided with a mounting opening capable of housing the piezoelectric transformer with a gap around the width and the length of the plate-shaped piezoelectric transformer, and a piezoelectric housed in the mounting opening. A width-direction support projection that contacts the width-direction end surface of the transformer, a longitudinal direction support projection that contacts the longitudinal direction end surface, and a node support projection that contacts the vibration node of the piezoelectric transformer. And a supporting member formed of a thin plate material having flexibility or elasticity.In the supporting member, the node supporting protrusion located at one of the vibration nodes of the piezoelectric transformer abuts on the one vibration node, The node supporting protrusion located on the other of the vibration nodes of the piezoelectric transformer supports the vibration node in a loosely fitted state with a gap between the other vibration node and the one vibration. The joint supporting projections that contact the joints have the piezoelectric transformer Piezoelectric transformer electrode connection structure characterized in that conductor in electrical contact with the electrode is provided. 7. A board provided with a mounting opening for accommodating the piezoelectric transformer with a gap around the width and the length of the plate-shaped piezoelectric transformer, and a piezoelectric accommodating in the mounting opening. A width direction supporting projection provided at a position facing the width direction end face of the transformer, a longitudinal direction supporting projection provided at a position facing the longitudinal direction end face, and a position corresponding to a vibration node of the piezoelectric transformer. A support member formed of a flexible or elastic thin plate material, wherein the longitudinal support protrusion is a longitudinal member of the piezoelectric transformer. That the piezoelectric transformer is supported in a loosely fitted state with a gap between the end and the direction end surface, and that the node supporting protrusion is provided with a conductor that is in electrical contact with an electrode of the piezoelectric transformer. Characteristic electrode connection of piezoelectric transformer Construction. 8. An electrode connection structure for a piezoelectric transformer, comprising a combination of the support member according to claim 7 and the support member according to claim 8. 9. A first support member formed of a thin plate member having a storage recess capable of storing a plate-shaped piezoelectric transformer, and a first support member formed of a thin plate member closing an opening of the storage recess of the first support member. And at least one of the first support member and the second support member sandwiches the vibration node of the piezoelectric transformer at a position corresponding to the vibration node of the piezoelectric transformer. An electrode connection structure for a piezoelectric transformer, wherein a support protrusion having elasticity is provided, and a conductor that electrically contacts the electrode of the piezoelectric transformer is provided on the support protrusion. 10. A width direction which has a size capable of accommodating the piezoelectric transformer with a gap around the plate-shaped piezoelectric transformer in the width direction and the longitudinal direction, and which comes into contact with an end face in the width direction of the piezoelectric transformer. A first support member having a support protrusion and a longitudinal support protrusion abutting on a longitudinal end surface, the first support member being an elastic thin plate member, and a thin plate member closing an opening of a storage recess of the first support member; And a second support member, the first support member and / or the second support member being capable of holding the vibration node at a position corresponding to the vibration node of the piezoelectric transformer. An electrode connection structure for a piezoelectric transformer, comprising: a support projection having a high elasticity; and a conductor that electrically contacts the electrode of the piezoelectric transformer. 11. A width direction which has a size capable of accommodating the piezoelectric transformer with a gap around the width and the length of the plate-shaped piezoelectric transformer, and which comes into contact with an end face in the width direction of the piezoelectric transformer. A first support member made of an elastic thin plate-like member having a support protrusion and a longitudinal support protrusion abutting on a longitudinal end surface; and a pair symmetrically formed with the first support member so as to be attached to the first support member. A width-direction support protrusion having a size capable of accommodating the piezoelectric transformer with a gap around the width and the length of the plate-shaped piezoelectric transformer, and abutting on a width-direction end face of the piezoelectric transformer. And a second support member made of an elastic thin plate member having a longitudinal support protrusion abutting on a longitudinal end surface, wherein the first and second support members correspond to vibrating nodes of the piezoelectric transformer. Position, the vibration of the piezoelectric transformer An electrode connection for a piezoelectric transformer, comprising: a support protrusion having elasticity capable of sandwiching a node portion, wherein the support protrusion is provided with a conductor electrically contacting an electrode of the piezoelectric transformer. Construction. 12. The electrode connecting structure for a piezoelectric transformer according to claim 10, wherein each of the first and second support members corresponds to a corresponding position of a flexible and elastic thin plate material. An electrode connection structure for a piezoelectric transformer, wherein each of the support portions is formed by a cut and raised protruding piece. 13. The electrode connecting structure for a piezoelectric transformer according to claim 10, wherein the supporting projection located at one of the vibration nodes of the piezoelectric transformer abuts on the one vibration node. An electrode connection structure for a piezoelectric transformer, wherein a supporting projection positioned on the other of the vibrating nodes is configured to support the other vibrating nodes in a loosely fitted state. 14. The electrode connection structure for a piezoelectric transformer according to claim 10, wherein the first support member is attached to one of the attachment portions near an end of the storage recess in a longitudinal direction of the first support member. A first positioning protrusion protruding toward the second support member is provided, and the other sticking portion near the end of the storage recess in the longitudinal direction of the second support member faces the first support member. Protruding second
And a first positioning hole in which the second positioning projection can be fitted is formed in the other attachment portion of the first support member, and one of the second support members A second positioning hole in which the first positioning protrusion can be fitted is formed in the sticking portion of the first positioning protrusion.
And the second positioning protrusion is fitted into the first positioning hole to integrate the first support member and the second support member. Electrode connection structure for piezoelectric transformer. 15. The electrode connection structure for a piezoelectric transformer according to claim 10, wherein an elastic arc or ring is provided between a longitudinal end surface of the piezoelectric transformer and a longitudinal inner wall of the housing recess. An electrode connection structure for a piezoelectric transformer, wherein a pressure contact body having a shape of a circle is interposed. 16. A first support member comprising a thin plate member having a storage recess capable of storing a plate-shaped piezoelectric transformer, and a first support member comprising a thin plate member closing an opening of the storage recess of the first support member. A support member, a storage recess disposed in at least one of the first support member and the second support member, and storing the circuit of the piezoelectric transformer, and the first support member or the second support member. At least one of the support members is provided with a support protrusion that is disposed so as to protrude at a position corresponding to the vibration node of the piezoelectric transformer and has elasticity, and the piezoelectric protrusion is formed by the support protrusion. An electrode connection structure for a piezoelectric transformer, characterized in that a conductor that sandwiches a vibration node of the transformer and that is electrically connected to an electrode of the piezoelectric transformer is provided on the support protrusion.