JPH09275232A - Electrode connection structure of piezoelectric transformer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a piezoelectric transformer support unit which supports the oscillation node at adequate deg. of freedom according to the change of the oscillation frequency or driving voltage and facilitates wiring input electrodes and output electrodes of the transformer. SOLUTION: A piezoelectric transformer 2 is housed in a mounting opening of a base board 1, node support protrusions 12, 13 made of an elastic material are disposed at positions corresponding the oscillation nodes of the transformer 2 so as to sandwich the oscillation nodes of the transformer therebetween and conductors 152-155 capable of electric contact with the input or output electrodes of the transformer 2 are disposed at the protrusions 12, 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piezoelectric transformer as a voltage converter using a piezoelectric element, and more particularly to an electrode structure in a piezoelectric transformer electrode connection structure.

[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. As examples of conventional piezoelectric transformers, JP-A-5-21858 and JP-A-6-334 are cited.
No. 234, JP-A-6-334235, and JP-A-6-342945.

Since the piezoelectric transformer accompanies mechanical vibration, it cannot be put to practical use by itself and requires some kind of electrode connection structure. As a conventional support structure for a piezoelectric transformer, as shown in FIGS. 28A and 28B, a structure for fixing the piezoelectric transformer main body to a printed wiring board is adopted.

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

In this way, the support protrusions 202, 203, 2
With 04 and 205, it is possible to support the piezoelectric transformer 201 in a vibration mode by supporting the vibration nodes P1 and P2. As examples of conventional support structures for piezoelectric transformers, there are JP-A-7-202288 and JP-A-7-202289.

[0006]

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

Further, when the drive voltage (input voltage) is increased to obtain a high output voltage, the piezoelectric transformer 201
Vibrates above the permissible value to increase the vibration amplitude, in which case the piezoelectric transformer 201 may be damaged by the conventional method of firmly fixing and supporting.

On the other hand, in consideration of the structure of the piezoelectric transformer, the labor for assembling, the manufacturing cost, etc., it is preferable to reduce the number of parts as much as possible. Further, conventionally, the wiring to the input electrode and the output electrode of the piezoelectric transformer 201 is fixed by soldering, but the characteristics due to soldering or the thermal influence on surrounding parts is avoided, or the labor required for assembly is saved. Was requested.

An object of the present invention is to support the vibrating node section with a moderate degree of freedom in response to changes in the frequency and changes in the driving voltage with a small number of parts and to simplify the electrical wiring. It is to provide an electrode connection structure of a piezoelectric transformer to be obtained.

[0010]

The electrode connection structure for a piezoelectric transformer according to the present invention has a size that can accommodate 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 supporting projection that abuts the width-direction end surface of the piezoelectric transformer and a longitudinal-direction supporting projection that abuts the longitudinal-direction end surface; and a substrate housed in the mounting opening. A supporting member formed of a thin plate material having flexibility or elasticity, the supporting member having a node supporting protrusion that abuts on a vibration node of the piezoelectric transformer, and the supporting protrusion is provided on the electrode of the piezoelectric transformer. It is configured by providing a conductor that makes electrical contact. According to the present invention, the width direction and the length direction of the piezoelectric transformer are supported by the width direction support projections and the length direction support projections provided in the mounting opening of the substrate. A vibrating node of the piezoelectric transformer is supported by a node supporting protrusion provided on a supporting member formed of a thin plate material having flexibility or elasticity, and a conductor provided on the node supporting protrusion is used as an electrode of the piezoelectric transformer. Therefore, the vibrating node portion of the piezoelectric transformer is supported by the elastic node supporting portion, and the vibrating node portion is not fixedly restrained to suppress the vibration. The conductor and the electrode of the piezoelectric transformer can be connected in a state having a degree of freedom. as a result,
It is possible to adapt to the increase of the vibration amplitude at the time of high output, and it is possible to prevent the destruction of the piezoelectric transformer. In addition, the piezoelectric element can be properly supported without suppressing the vibration even when the vibration node position changes due to the change of the vibration wave number due to the change of the environmental condition or the like. In addition, the conductors provided on the support protrusions can receive and send signals to the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, 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 plate-shaped piezoelectric transformer and a substrate provided with mounting openings for accommodating the piezoelectric transformer with a gap around the width direction and the longitudinal direction. A width direction supporting protrusion abutting on the width direction end face of the piezoelectric transformer housed in the mounting opening, a longitudinal direction supporting protrusion abutting on the longitudinal direction end face, and a node part abutting on the vibration node part of the piezoelectric transformer. A supporting member formed of a thin plate having flexibility or elasticity, and a holding member, and the node supporting protrusion is provided with a conductor that electrically contacts the electrode of the piezoelectric transformer. It According to the present invention, the piezoelectric transformer is formed in the mounting opening of the substrate, and is supported by the supporting member formed of a thin plate material having flexibility or elasticity. That is, the mounting opening acts as a storage space, the piezoelectric transformer is supported by the supporting member, and the supporting member is fixed and integrated with the substrate. In the piezoelectric transformer, the width direction and the longitudinal direction of the piezoelectric transformer are elastically supported by the width direction supporting projections and the longitudinal direction supporting projections provided on the supporting member, and the vibration nodes are the node supporting projections and the node supporting projections. The electrodes of the piezoelectric transformer are contacted while being elastically supported by the conductor provided with the supporting protrusions. In this way, the piezoelectric transformer is supported and contacted not only with the vibration node but also with elasticity as a whole, so that the vibration node can be connected to the electrode of the piezoelectric transformer without restraining the vibration and restraining the vibration. The conductor can be connected to the electrodes of the piezoelectric transformer with a certain degree of accuracy. As a result, it is possible to adapt to the increase of the vibration amplitude at the time of high output, and it is possible to prevent the piezoelectric transformer from being broken. In addition, the piezoelectric element can be properly supported without suppressing the vibration even when the vibration node position changes due to the change of the vibration wave number due to the change of the environmental condition or the like. In addition, since the conductors provided on the node supporting protrusions can receive and send signals to the electrodes of the piezoelectric transformer, the conventional wiring and soldering are not required, facilitating assembly and heat of soldering. It can avoid the physical influence.

In the electrode connection structure of the piezoelectric transformer according to the present invention, the support member formed of the flexible or elastic thin plate member may include the width direction support protrusion, the length direction support protrusion, and The node supporting protrusion is formed by a protrusion formed by cutting and raising each corresponding position in the thin plate material. According to the present invention, since each supporting protrusion can be formed by cutting and raising a part of an elastic thin plate material, the width direction supporting protrusion, the longitudinal direction supporting protrusion and the node supporting protrusion are formed. It is easy to adjust the support strength and the amount of elasticity added, and it is possible to reduce the weight due to notches and cutting, and it is easy to use the conductors provided on each support protrusion. In addition, the electrodes of the piezoelectric transformer can be reliably connected.

In the electrode connecting structure of the piezoelectric transformer according to the present invention, the tip ends of the width direction supporting projecting piece, the longitudinal direction supporting projecting piece and the node part supporting projecting piece are bent in the thickness direction as needed. 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 conductors provided on the respective support protrusions formed in this manner can more reliably connect to the electrodes of the piezoelectric transformer.

The electrode connection structure of the piezoelectric transformer according to the present invention is a projection formed by pressing at corresponding positions of a supporting member made of a thin plate material having flexibility and elasticity, if necessary, to support the width direction. The protrusion, the longitudinal support protrusion, and the node support protrusion are formed. 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 portion support protrusion, and the vibration node of the piezoelectric transformer is excessively formed. It is possible to adjust the support strength and the amount of elasticity added for proper support without restraining the pressure on the electrodes of the piezoelectric transformer easily and reliably by the conductors provided on the respective support protrusions formed in this way. Can be connected.

The electrode connection structure of the 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 supporting protrusion abutting on the width direction end face of the piezoelectric transformer housed in the mounting opening, a longitudinal direction supporting protrusion abutting on the longitudinal direction end face, and a node part abutting on the vibration node part of the piezoelectric transformer. A supporting member formed of a thin plate material having flexibility or elasticity, which has a supporting protrusion, and the node supporting protrusion located at one of the vibrating nodes of the piezoelectric transformer has a vibration of the one side. The node supporting projection, which is in contact with the node and is located on the other of the vibration nodes of the piezoelectric transformer, supports the vibration node in a loosely fitted state with a gap from the other vibration node. And a node supporting protrusion that abuts 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 protrusion located on one of the vibration nodes of the piezoelectric transformer abuts and supports one of the opposing vibration nodes, and the node located on the other side. The support protrusion has a gap between the other opposing vibration node and supports the vibration node in a loosely fitted state, so that the vibration node is properly supported in a more free state without being excessively suppressed. In this state, it is possible to connect to the electrode of the piezoelectric transformer by the conductor provided on the node supporting protrusion located on one side. In addition, since the conductors provided on the node supporting protrusions can receive and send signals to the electrodes of the piezoelectric transformer, the conventional wiring, soldering, etc. are not required, facilitating the assembly and the heat of the soldering. The influence can be avoided.

The electrode connection structure of the piezoelectric transformer according to the present invention includes a substrate having a mounting opening for accommodating the piezoelectric transformer, which is provided around the plate-shaped piezoelectric transformer with a gap in the width direction and the longitudinal direction. A width direction supporting projection provided at a position facing a width direction end surface of the piezoelectric transformer housed in the mounting opening, a longitudinal direction supporting projection provided at a position facing the longitudinal direction end surface, and the piezoelectric element. It has a node support protrusion provided at a position corresponding to the vibration node of the transformer,
A supporting member formed of a thin plate material having flexibility or elasticity, wherein the piezoelectric transformer is loosely fitted with the longitudinal supporting projection having a gap between the longitudinal supporting projection and the longitudinal end face of the piezoelectric transformer. A conductor is provided for supporting and electrically contacting the electrode of the piezoelectric transformer on the node supporting protrusion. According to the present invention, the longitudinal support protrusion has a gap between it and the longitudinal end face of the piezoelectric transformer, supports the piezoelectric transformer in a loosely fitted state, and provides the node support protrusion with a conductor. Since the electrodes are electrically contacted with the electrodes of the piezoelectric transformer, a degree of freedom is provided not only in the thickness direction of the piezoelectric transformer but also in the longitudinal direction, so that the conductor can be supported without excessively suppressing the vibration node. It is possible to make electrical contact with the electrodes of the piezoelectric transformer, and the conductor can be connected to the electrodes of the piezoelectric transformer while being properly supported. In addition, the conductors provided on the node supporting protrusions allow signals to be received by the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring, soldering, etc., facilitating assembly and heat of soldering. It can avoid the physical influence.

The electrode connection structure for a piezoelectric transformer according to the present invention includes a substrate provided with mounting openings for accommodating the piezoelectric transformer with a gap around the width and the longitudinal direction of the plate-shaped piezoelectric transformer. A width direction supporting protrusion provided at a position facing a width direction end face of the piezoelectric transformer housed in the mounting opening, a longitudinal direction supporting protrusion provided at a position facing the longitudinal direction end face, and the piezoelectric element. A supporting member having a plurality of node supporting projections made of an elastic material provided at a position corresponding to the vibrating node of the transformer, wherein the width direction supporting projection abuts the width direction end surface of the piezoelectric transformer, The longitudinal support protrusion has a gap between it and the longitudinal end face of the piezoelectric transformer, and supports the piezoelectric transformer in a loosely fitted state,
The node supporting projection located on one of the vibrating nodes of the piezoelectric transformer is in contact with the one vibrating node, and the node supporting projection located on the other of the vibrating nodes of the piezoelectric transformer is the other node. The oscillating node portion is loosely fitted to support the oscillating node portion, and a conductor that electrically contacts the electrode of the piezoelectric transformer is provided on the node portion supporting protrusion. According to this aspect of the invention, the longitudinal support protrusion has a gap between it and the longitudinal end surface of the piezoelectric transformer, supports the piezoelectric transformer in a loosely fitted state, and is located at the other vibration node. The support projection has a gap between the other support and supports the vibration node in a loosely fitted state, and the conductor provided on the node support projection contacts the electrode of the piezoelectric transformer. Therefore, the degree of freedom is also provided 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, the conductors provided on the node supporting protrusions allow signals to be received by the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring, soldering, etc., facilitating assembly and heat of soldering. It can avoid the physical influence.

In the piezoelectric transformer electrode connection structure according to the present invention, there is provided a first supporting member made of a thin plate member having a storage recess capable of storing a plate-shaped piezoelectric transformer, and a storage recess of the first support member. A second plate-like member that closes the opening
And a support member for the first support member or the second support member.
At least one of the supporting members is provided with a supporting protrusion having elasticity at a position corresponding to the vibrating node of the piezoelectric transformer, and the vibrating node of the piezoelectric transformer is sandwiched by the supporting protrusion, and A conductor is provided on the support protrusion to make electrical contact with the electrodes of the piezoelectric transformer. According to the present invention, the piezoelectric transformer is supported by the first support member and the second support member, and conductive to the support protrusion provided on at least one of the first support member and the second support member. Since the body is formed, it is possible to reduce the number of component types and eliminate the need for a conventional substrate, and it is possible to connect the conductor to the electrodes of the piezoelectric transformer. Further, even in the structure having only such a supporting member, since the vibration node portion of the piezoelectric transformer is supported by the node portion supporting protrusion having elasticity, it is not necessary to fixedly restrain the vibration node portion and suppress the vibration. , Can be supported with an appropriate degree of freedom. As a result, it is possible to adapt to the increase of the vibration amplitude at the time of high output, and it is possible to prevent the piezoelectric transformer from being broken. In addition, the piezoelectric transformer can be properly supported without suppressing the vibration even when the vibration node position changes due to the change of the vibration wave number due to the change of the environmental conditions. In addition, the conductors provided on the support protrusions allow signals to be received by the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, facilitating assembly and reducing the thermal effects of soldering. Can be avoided.

The electrode connection structure of the piezoelectric transformer according to the present invention has a size capable of accommodating the piezoelectric transformer with a gap around the widthwise direction and the longitudinal direction of the plate-shaped piezoelectric transformer, and A first support member made of an elastic thin plate member, which has a width-direction support protrusion that contacts the width-direction end face of the transformer and a longitudinal-direction support protrusion that contacts the length-direction end face;
A second support member formed of a thin plate-like member that closes the opening of the storage recess of the first support member, and the piezoelectric transformer is provided on at least one of the first support member and the second support member. Elastic supporting protrusions are provided at positions corresponding to the vibrating nodes of the piezoelectric transformer, and the supporting protrusions are configured to sandwich the vibrating node of the piezoelectric transformer and electrically contact the electrodes of the piezoelectric transformer. The conductor is provided on the support protrusion. According to the present invention, in the piezoelectric transformer, the width direction and the length 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 further, the first support member. And a second supporting member, and a conductor is formed on a supporting protrusion provided on at least one of the first supporting member and the second supporting member to electrically contact the electrode of the piezoelectric transformer. Therefore, it is possible to reduce the number of parts and to connect the conductor to the electrodes of the piezoelectric transformer, since the conventional substrate is not needed. Further, even in the structure having only such a supporting member, since the vibration node portion of the piezoelectric transformer is supported by the node portion supporting protrusion having elasticity, it is not necessary to fixedly restrain the vibration node portion and suppress the vibration. , Can be supported with an appropriate degree of freedom. As a result, it is possible to adapt to the increase in vibration amplitude at high output,
The destruction of the piezoelectric transformer can be prevented. In addition, the piezoelectric transformer can be properly supported without suppressing the vibration even when the vibration node position changes due to the change of the vibration wave number due to the change of the environmental conditions. in addition,
Since it is possible to supply signals to the electrodes of the piezoelectric transformer by the conductor provided on the support protrusion, it is possible to supply conventional signals, soldering, etc. is not required, facilitating assembly and soldering. Thermal effects can be avoided.

The electrode connection structure of the piezoelectric transformer according to the present invention 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 first supporting member made of an elastic thin plate member having a width direction supporting protrusion abutting on the width direction end face of the transformer and a longitudinal direction supporting protrusion abutting on the longitudinal direction end face;
The first support member is formed symmetrically so that it can be attached to the first support member in a pair, and has a size capable of accommodating the plate-shaped piezoelectric transformer with a gap around the width direction and the longitudinal direction. And a second supporting member formed of an elastic thin plate-shaped member having a width direction supporting protrusion abutting on the width direction end face of the piezoelectric transformer and a longitudinal direction supporting protrusion abutting on the longitudinal direction end face, The first and second support members each have a supporting protrusion having elasticity at a position corresponding to the vibration node of the piezoelectric transformer, and the vibration protrusion of the piezoelectric transformer is sandwiched by the supporting protrusion to support the vibration. The protrusion is provided with a conductor that makes electrical contact with the electrodes 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, the piezoelectric transformers are housed in the housing recesses formed in each, and are elastically supported by the respective support protrusions. Therefore, the conventional board is not required, and the number of parts can be reduced. Further, even in the structure having only such a supporting member, since the vibration node portion of the piezoelectric transformer is supported by the node portion supporting protrusion having elasticity, it is not necessary to fixedly restrain the vibration node portion and suppress the vibration. , Can be supported with an appropriate degree of freedom. As a result, it is possible to adapt to the increase of the vibration amplitude at the time of high output, and it is possible to prevent the piezoelectric transformer from being broken. In addition, the piezoelectric transformer can be properly supported without suppressing the vibration even when the vibration node position changes due to the change of the vibration wave number due to the change of the environmental conditions. In addition, the conductors provided on the support protrusions allow signals to be received by the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, facilitating assembly and reducing the thermal effects of soldering. Can be avoided.

In the piezoelectric transformer electrode connection structure according to the present invention, one attachment portion near the end of the storage recess in the longitudinal direction of the first support member faces the second support member as necessary. And a second positioning member that protrudes toward the first support member at the other attachment portion near the end of the storage recess in the longitudinal direction of the second support member. The positioning protrusion is provided, and the first
A first positioning hole into which the second positioning protrusion can be fitted, is formed in the other attachment portion of the support member, and the first positioning protrusion is formed in one attachment portion of the second support member. A second positioning hole into which the portion can be fitted, the first positioning projection is fitted into the second positioning hole, and the second positioning hole is formed.
The positioning protrusion is fitted into the first positioning hole 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 respect to each other in the first supporting member and the second supporting member, only one type of supporting member is required.
It is possible to reduce the number of parts and to omit the machining process. Also,
Since the vibrating node portion of the piezoelectric transformer is supported by the elastic node supporting protrusion, the vibrating node portion can be supported with an appropriate degree of freedom without fixedly restraining the vibrating node portion. As a result, it is possible to adapt to the increase of the vibration amplitude at the time of high output, and it is possible to prevent the piezoelectric transformer from being broken. In addition, the piezoelectric transformer can be properly supported without suppressing the vibration even when the vibration node position changes due to the change of the vibration wave number due to the change of the environmental conditions.

In the piezoelectric transformer electrode connection structure according to the present invention, an elastic arc-shaped or ring-shaped pressure contact body is provided between the longitudinal end surface of the piezoelectric transformer and the longitudinal inner wall of the accommodating recess, if necessary. It is configured by being interposed. According to the present invention, when the piezoelectric transformer vibrates, the longitudinal end portion of the piezoelectric transformer vibrates in an arc shape around the vibrating node portion, but the longitudinal end surface of the piezoelectric transformer and the longitudinal inner wall of the storage recess are formed. Since the elastic arc-shaped or ring-shaped pressure contact body is interposed therebetween, the longitudinal end surface of the piezoelectric transformer is always urged by a constant pressing force, and is favorably supported with an appropriate degree of freedom. Further, since the vibrating node portion of the piezoelectric transformer is supported by the elastic node supporting protrusion, the vibrating node portion can be supported with an appropriate degree of freedom without fixedly restraining the vibrating node portion and suppressing the vibration. . As a result, it is possible to adapt to the increase of the vibration amplitude at the time of high output, and it is possible to prevent the piezoelectric transformer from being broken. In addition, the piezoelectric transformer can be properly supported without suppressing the vibration even when the vibration node position changes due to the change of the vibration wave number due to the change of the environmental conditions.

The electrode connection structure of the piezoelectric transformer according to the present invention comprises a first supporting member made of a thin plate member having a storage recess capable of storing a plate-shaped piezoelectric transformer, and a storage recess of the first support member. A second plate-like member that closes the opening
Of the first support member or the second support member, and a storage recess for storing the control circuit of the piezoelectric transformer, the first support member or the second support member. At least one of the supporting members is provided with a supporting protrusion that is disposed so as to protrude at a position corresponding to the vibrating node of the piezoelectric transformer and that is formed with elasticity. A configuration is provided in which a 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 the circuit housing portion is provided, various circuits required for driving the piezoelectric transformer can be integrated with the piezoelectric transformer, and the device configuration can be made compact. Further, since the vibrating node portion of the piezoelectric transformer is supported by the elastic node supporting protrusion, the vibrating node portion can be supported with an appropriate degree of freedom without fixedly restraining the vibrating node portion and suppressing the vibration. . As a result, it is possible to adapt to the increase of the vibration amplitude at the time of high output, and it is possible to prevent the piezoelectric transformer from being broken. In addition, the piezoelectric transformer can be properly supported without suppressing the vibration even when the vibration node position changes due to the change of the vibration wave number due to the change of the environmental conditions. In addition, the conductors provided on the support protrusions allow signals to be received by the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering. Can be avoided.

[0024]

Next, preferred embodiments of the present invention will be described with reference to the drawings. (I) First Embodiment FIGS. 1 (A) to 2 (B) show a first embodiment of the present invention. This embodiment discloses a structural example in which the width-direction end face and the length-direction end face of the piezoelectric transformer 2 are supported on the substrate 1 side, and the vibration 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 size so as to leave an appropriate gap in the width direction and the longitudinal direction of the piezoelectric transformer 2. A pair of semi-cylindrical width-direction support protrusions 7 and 8 and 9 and 10 are provided on the inner wall surface of the mounting opening 11 in the width direction.
Similarly, a pair of semi-cylindrical longitudinal support projections 5 and 6 are provided on the inner wall surface of the mounting opening 11 in the longitudinal direction.

Each of the width-direction supporting protrusions 7, 8, 9, 10 is located at a position (or in the vicinity thereof) corresponding to the vibrating node of the piezoelectric transformer 2 (see FIG. 28A, reference symbols P1, P2). Piezoelectric transformer 2 is provided at the tip of them.
Line contact with each end face of. Alternatively, the width-direction supporting protrusions 7 to 10 may be formed in a protruding shape so that the tips thereof come into point contact. The piezoelectric transformer 2 is accommodated in the mounting opening 11 of the substrate 1 while being supported by the width-direction supporting protrusions 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 are in line contact with the longitudinal end faces of the piezoelectric transformer 2. Similarly, the longitudinal support protrusions 5 and 6 may be formed in a protruding shape so that the tips are in 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 flexible and elastic thin plates.

The thin plate 3 has such a size as to cover the mounting opening 11, and the thin plate 3 is provided on the piezoelectric transformer 2 side so as to come into contact with the vibration node position (or the vicinity thereof) on one surface of the piezoelectric transformer 2. Semi-cylindrical nodal support projections 12 and 1
3 are formed. Similarly, the thin plate 4 also has the mounting opening 11
And a semi-cylindrical node supporting protrusion projecting toward the piezoelectric transformer 2 so as to come into contact with the vibration node position (or the vicinity thereof) 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, etc. can be used, and basically, insulation is used. However, a composite material obtained by compounding an insulating material and another material can be used. This also applies to the thin plate described later. Each node support protrusion 12 to 15
Although the tip is in line contact with each end surface of the piezoelectric transformer 2, the node supporting projections 12 to 15 may be formed in a plurality of protrusions so that the tip makes point contact.

Further, as shown in FIGS. 2 (A) and 2 (B),
Of these node supporting protrusions 12 to 15, the node supporting protrusions 12 and 14 are provided with conductive films 152 and 153 that can electrically contact the positive and negative input electrodes of the piezoelectric transformer 2. . The conductive films 152 and 153 are, as shown in the figure,
It is led to the outside via a signal line formed by 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 make electrical contact with the output electrode of the piezoelectric transformer 2 is formed on the longitudinal support protrusion 6, and is provided on the mating surface side of the thin plate 3 or 4 and the substrate 1 as necessary. It is led out through the signal line by the wiring pattern. Positioning support protrusions 16, 17, 18, and 19 are formed at the longitudinal ends of the mounting openings 11, and are fitted into positioning holes 20 and 21 provided at corresponding positions of the substrate 1, respectively.

The above node supporting projections 12, 13, 14, 1
5, the positioning support projections 16, 17, 18, 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 with a mold can be used. At the time of assembly, the thin plates 3 and 4 are integrated by an adhesive or a double-sided tape.

In the above structure, the conductive films 152 and 153 are formed on the inner side surfaces of the elastic node supporting projections 12 and 14, and the conductive film 154 is formed on the side surfaces of the elastic longitudinal supporting projections 6. Therefore, the vibrating node is contacted and supported by a flexible structure (or a soft structure), and is flexibly supported even when the vibrating node position fluctuates or the vibration amplitude increases due to fluctuations in the vibration frequency. Each conductive film 1
52, 153, and 154 can be connected to the input electrode and the output electrode of the piezoelectric transformer 2, respectively, and the vibration node is constrained to suppress the vibration forcibly, or the piezoelectric transformer 2 is not destroyed. It is possible to reliably apply the DC voltage and output the transformed voltage 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 container and the piezoelectric transformer 2 is supported by the thin plates 3 and 4.

As shown in FIG. 3A, a mounting opening 11 having a larger size is formed in the substrate 1 so as to leave an appropriate gap in the width direction and the longitudinal direction of the piezoelectric transformer 2.
As shown in FIGS. 3B to 4B, the piezoelectric transformer 2
Is sandwiched between a pair of thin plates 3 and 4 which are flexible and elastic.

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

The thin plate 3 has a pair of width-direction supporting projections 24, 25, 26, 2 which come into contact with the width-direction end surface of the piezoelectric transformer 2 at the vibration node position (or in the vicinity thereof).
7 are provided, and their side end faces are piezoelectric transformers 2.
Abutting on the end face in the width direction of line contact (or point contact). Further, the thin plate 3 is provided with a pair of longitudinal support projections 22 and 23 that come into contact with the longitudinal end surface of the piezoelectric transformer 2, and the side end surfaces of these are in line contact (or dot contact) with the longitudinal end surface of the piezoelectric transformer 2. Contact). Similarly, the thin plate 4 is formed symmetrically with the thin plate 3, and has node supporting projections 14, 15, positioning supporting projections 18, 19, and longitudinal supporting projections 28, 29, 30, 31. .

As shown in FIGS. 4A and 4B,
Conductive films 152 and 15 that can electrically contact the positive and negative input electrodes of the piezoelectric transformer 2 are provided on the node supporting protrusions 12 and 14.
3 are formed. These conductive films 152 and 153
As shown in the figure, is guided to the outside through a signal line formed by a wiring pattern provided on the mating surface side of the thin plates 3 and 4 and the substrate 1. In addition, conductive films 154 and 155 that can electrically contact the output electrodes of the piezoelectric transformer 2 are formed on the longitudinal support protrusions 23 and 29, and if necessary, a mating surface between the thin plate 3 or 4 and the substrate 1 is formed. It is led to the outside through a signal line formed by a wiring pattern provided on the side.

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

In the above structure, the node supporting projections 12,
13, 14, 15, the longitudinal support projections 22, 23, the width support projections 24, 25, 26, 27, 30, 31, and the longitudinal support projections 28, 29 have elasticity, and the node support Conductive films 152 and 153 are formed on the projections 12 and 14, and conductive films 154 and 1 are formed on the longitudinal support projections 23 and 29.
Since 55 is formed, the vibrating node is supported by the conductive film 152 in the thickness direction and the width direction, and also in the longitudinal direction while being supported by the flexible structure (or the soft structure).
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 changes or the vibration amplitude increases at the nodal point position due to the vibration frequency fluctuation. It is possible to suppress the vibration by constraining the node portion, to reliably apply the input voltage to the piezoelectric transformer 2 without destroying the piezoelectric transformer 2, and to output the transformed voltage from the piezoelectric transformer 2.

(III) Third Embodiment FIGS. 5 (A) to 6 (B) show a third embodiment of the present invention. This embodiment discloses an example in which the substrate 1 is used as a 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. 3 (A) to 4 (B)), only different parts will be described below, and other parts will be described above. Incorporate. This embodiment is different from the second embodiment in that a gap 34 is formed between the tips of the node supporting projections 13A and 15A of the thin plate 3 supporting one of the vibrating nodes and the surface of the piezoelectric transformer 2. The node support protrusions 13A and 15A are formed so as to place the gap 35, and the longitudinal support protrusions 22, 28 and 23, 29 form the gaps 32 and 33 between the longitudinal end faces of the piezoelectric transformer 2. It is a structure formed in. The proper length of these gaps 32, 33 is
The fluctuation range of the vibration frequency and the fluctuation range of the vibration amplitude that can occur are experimentally and empirically determined and set.

In this way, one of the vibrating nodes and the longitudinal direction are supported by a more flexible structure via the spaces 32, 33, 34, 35, and the other of the vibrating nodes is formed with conductive films 152, 153. Since it is held by the part support protrusions 12 and 14,
The piezoelectric transformer 2 is flexible even when the vibration node position is changed or the vibration amplitude is increased due to the change of the vibration frequency.
The piezoelectric transformer 2 can be positively contacted with each other, and the vibration nodes can be restrained to suppress vibrations, or the input voltage can be applied to the piezoelectric transformer 2 without destroying the piezoelectric transformer 2. The voltage can be reliably applied and the voltage transformed by the piezoelectric transformer 2 can be output. That is, even if the vibrating node portion is set in advance as a position corresponding thereto, it may be different from the preset position depending on the ratio of the thickness, width, length, etc. of the piezoelectric transformer 2. Even in such a case, the piezoelectric transformer 2 can be freely supported with a predetermined vibration amplitude without suppressing the vibration, and in particular, the node supporting protrusions 13A and 15A and the longitudinal supporting protrusions 22 and 2 can be supported.
A gap 3 is provided between each of the piezoelectric transformers 2, 8 and 23 and 29.
2, 33, 34, and 35 are arranged so that the vibration of the piezoelectric transformer 2 causes the position of the true vibration node of the piezoelectric transformer 2 to be arranged without forming a gap. It naturally moves so as to come into contact with the portions 12 and 14, and is supported. The output voltage converted by the piezoelectric transformer 2 in the case of the present embodiment is output from the lead-out wiring by directly connecting the flexible lead-out wiring to the side end portion of the piezoelectric transformer 2 by soldering or the like. You can

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

As shown in FIG. 7 (A), the substrate 1 is provided with a mounting opening 11 of a larger size so that an appropriate gap is provided in the width direction and the longitudinal direction of the piezoelectric transformer 2.
As shown in FIGS. 7B to 8B, the piezoelectric transformer 2
Is sandwiched between a pair of thin plates 3 and 4 which are flexible and elastic.

The thin plate 3 has such a size as to cover the mounting opening 11, and the piezoelectric transformer 2 is attached to the thin plate 3 so that the tip of the thin plate 3 comes into contact with the vibration node position (or the vicinity thereof) on one surface of the piezoelectric transformer 2. Node supporting projections 42 and 43 projecting to the side are formed, and their tips are in line contact (or point contact) with the surface of the piezoelectric transformer 2.

The thin plate 3 has a pair of hook-shaped width-direction supporting projections 38, 39, 4 which come into contact with the width-direction end faces 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 line contact (or point contact) with the width direction end face of the piezoelectric transformer 2. Further, the thin plate 3 is provided with a pair of longitudinal support projections 36 and 37 that come into contact with the longitudinal end faces of the piezoelectric transformer 2, and their side end faces are in line contact (or dot contact) with the longitudinal end faces of the piezoelectric transformer 2. Contact).

On the other hand, the thin plate 4 has such a size as to cover the mounting opening 11, and the piezoelectric transformer is attached to the thin plate 4 so that the tip of the thin plate 4 comes into contact with the vibration node position (or the vicinity thereof) on the other surface of the piezoelectric transformer 2. Node supporting projections 44, 45 projecting to the 2 side
Are formed, and their tips are in line contact (or point contact) with the surface of the piezoelectric transformer 2.

Positioning support projections 16, 17, 18, 19 are formed at the longitudinal ends of the mounting opening 11, and the substrate 1
Are fitted into the positioning holes 20 and 21 provided at the corresponding positions. The longitudinal support projections 36, 37 and the width support projections 38, 39, 40, 4
1. The node supporting projections 42, 43, 44, 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.

Further, as shown in FIGS. 8A and 8B,
Conductive films 152 and 15 that can electrically contact the positive and negative input electrodes of the piezoelectric transformer 2 are provided on the node supporting projections 42 and 44.
3 are formed. As shown in the drawing, the conductive films 152 and 153 are led out to the outside through a signal line formed by a wiring pattern provided on the mating surface side of the thin plates 3 and 4 and the substrate 1. In addition, the piezoelectric transformer 2 is attached to the longitudinal support protrusion 37.
A conductive film 154 that can be electrically contacted with the output electrode is formed, and is led out to the outside via a signal line by a wiring pattern provided on the mating surface side of the thin plate 3 or 4 and the substrate 1 as necessary. It At the time of this assembly, the thin plates 3 and 4
Are integrated by an adhesive or a double-sided tape.

In the above structure, the longitudinal support projection 3
6, 37, the width direction supporting protrusions 38, 39, 40, 41 and the node supporting protrusions 42, 43, 44, 45 have elasticity, and the conductive films 152, 153 are attached to the node supporting protrusions 42, 44. In addition to being formed, the conductive film 154 is formed on the longitudinal support protrusions 37, so that the vibrating nodes are electrically conductive in a state of being supported by a flexible structure (or a soft structure) in the thickness direction, the width direction, and the longitudinal direction. The membranes 152, 153, and 154 are connected to the input electrode and the output electrode of the piezoelectric transformer 2, respectively, so that the membranes 152, 153, and 154 can be flexibly supported even when the vibration node position fluctuates or the vibration amplitude increases due to the fluctuation of the vibration frequency. Therefore, it is possible to restrain the vibration by restraining the vibration node portion or to prevent the piezoelectric transformer 2 from being broken.
The input voltage can be reliably applied to the piezoelectric transformer 2
It is possible to output a voltage transformed from the. In addition, the longitudinal support protrusions 36, 37, the width direction support protrusions 38, 3
9, 40, 41, joint support projections 42, 43, 44, 45
Since the punching process and the bending process can be adopted in the molding of, the production efficiency can be improved, the cost can be reduced, and the 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 protrusion is supported by a cutout protrusion in a structure in which the substrate 1 is used as a container and the piezoelectric transformer 2 is supported by the thin plates 3 and 4. .

Since the basic structure is similar to that of the fourth embodiment (FIGS. 7 (A) to 8 (B)), only different parts will be described below, and the other parts will be described above. Incorporate. This embodiment is different from the fourth embodiment in that each of the longitudinal support protrusions 36A, 37 is different.
A, width direction supporting protrusions 38A, 39A, 40A, 41A,
The tip ends of the node supporting protrusions 42A, 43A, 44A, and 45A are bent and raised at a predetermined angle with respect to their extending direction, and the longitudinal direction supporting protrusion 37A and the node supporting protrusion 42 are bent and raised.
A conductive film 152, 153, 154 is formed on each of A and 44A. In addition, the longitudinal support protrusions 36A, 3
The bending direction of 7A may be configured so as to project in the opposite direction to the mode shown in FIG.

As a result, the longitudinal support protrusions 36A, 37
A, the contact portions of the nodal portion supporting projections 42A, 43A, 44A, and 45A with the piezoelectric transformer 2 are curved, so that the contact is gentle, and even if the vibration node position changes, there is some displacement. On the other hand, the piezoelectric transformer 2 can be flexibly supported to reliably apply the input voltage to the piezoelectric transformer 2, and the transformed voltage can be output from the piezoelectric transformer 2. The other actions are similar to 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 supporting protrusion. As shown in FIG. 11, a wiring pattern 46 made of a conductive material such as a copper vapor deposition film or an aluminum vapor deposition film is provided on the inner surface of the thin plate 3 (the surface on the piezoelectric transformer 2 side), and corresponds to the input electrode of the piezoelectric transformer 2. It extends to the node support projection 12 at the position where Although not shown, the wiring pattern 46 is similarly formed on the thin plate 4 so as to make electrical contact with the other input electrode.
Are formed.

The support member for 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 inner surface of the thin plate 4 (the surface on the piezoelectric transformer 2 side)
Is provided with a wiring pattern 46 made of a conductive material such as a copper vapor deposition film or an aluminum vapor deposition film, and extends to the node supporting projection 14 at a position corresponding to the input electrode of the piezoelectric transformer 2.

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

FIG. 13 shows a modified example of FIG.
The wiring pattern 46 is provided on the planar thin plate 4 and the good conductor film 47 is further stacked. On the other hand, in the thin plate 4 of this example, the portion where the node supporting projections 14 are formed is recessed. This is an example in which the wiring pattern 46 and the good conductor film 47 are 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 parts are designated by the same reference numerals and the description thereof will be omitted.

(VIII) Eighth Embodiment FIG. 14 shows the 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 plates 3 or 4, and the circuit pattern is soldered between the circuit components or to the electrical wiring to the input / output electrodes of the piezoelectric transformer 2. Since the soldering temperature is high, it is necessary to use a resin material (for example, a polyimide resin) that does not melt by heat for the thin plates 3 and 4. However, such a heat resistant resin is expensive,
This leads to a rise in manufacturing costs.

Therefore, in the present embodiment, the thin plates 3 and 4 themselves are made of an inexpensive material having low heat resistance, and a heat resistant resin (for example, polyimide resin or the like) is superposed only on a necessary portion, so that the whole structure can be obtained. This is to reduce the cost. As shown in FIG. 14, the wiring pattern 46 of the thin plate 4 is formed.
A heat-resistant film 49 is attached between the thin plate 4 and the wiring pattern 46 so as to be interposed between the thin plate 4 and the wiring pattern 46. Since the heat of the 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 capable of accommodating the circuit board 51,
The thin plate 3 is formed with a protrusion 52 capable of accommodating 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 storage position of the piezoelectric transformer 2 in the substrate. In FIG. 15, a pair of support protrusions 55 and 56 are provided at one end of the substrate 54 along the extending direction of the substrate 54.
A mounting opening (storage space) 57 is formed between the portions 5 and 56.

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

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

At the time of assembly, the holder 59 is fitted by sliding while holding the piezoelectric transformer 2 in the mounting opening 57 so as to sandwich the supporting projections 55 and 56.
The support protrusions 55 and 56 and the holder 59 are bonded and fixed with an adhesive or the like. For the wiring of the electric circuit, the method disclosed in the above embodiment can be used. 16 (A) and 16 (B) disclose a modification in which the holder is not U-shaped in cross section but has two separate support members 62 and 63.

That is, A pair of node supporting projections 67 and 69 are projected on 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 projections 67 and 69. , And the width direction supporting protrusion 6
4, 65, 66, and 68 are provided, and the support member is formed in the mode shown in the third embodiment (see FIG. 5A). With this configuration, the degree of freedom in the circuit layout of the substrate 54, the simplification of assembly, and the easy processing of 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 for a piezoelectric transformer according to a tenth embodiment of the present invention. The electrode connection structure of the piezoelectric transformer according to this embodiment is one in which a piezoelectric transformer housing recess is formed in one of the pair of supporting members to hold the piezoelectric transformer in a substantially sandwich shape. Is.

This piezoelectric transformer device includes the first support member 7
0, and the second support member 7 forming a pair 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 body such as polyester resin, and the piezoelectric transformer 2 is formed in the central portion with appropriate gaps in the width direction and the longitudinal direction of the piezoelectric transformer 2. Storage recess 72 of a size capable of storing 2
Are formed. Semi-cylindrical node support projections 75, 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 in the vicinity thereof. , These node support protrusions 7
Reference numerals 5 and 76 have appropriate elasticity so that their tips come into line contact (or point contact) with the surface of the piezoelectric transformer 2.

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

A pair of longitudinal support protrusions 83, 84 facing each other are formed on the inner surface of the storage recess 72 in the longitudinal direction. Similarly, the longitudinal support protrusions 83, 84 also have appropriate elasticity. They have their tips abutting on the surface of the piezoelectric transformer 2 by line contact (or point contact). Storage recess 72 in the longitudinal direction of the first support member 70
Positioning holes 73B, at positions near both ends of the
74B is drilled. Further, a rib 111 for reinforcing the first support member 70 is formed on the peripheral portion of the first support member 70.

The second support member 71 is formed of a flexible or elastic thin plate member such as polyester resin, and can be brought into contact with the vibration node of the piezoelectric transformer 2 or a position in the vicinity thereof. Node supporting protrusions 77, 78 projecting toward the member 70 are formed, and these node supporting protrusions 7 are formed.
Reference numerals 7 and 78 have appropriate elasticity, and similarly, their tips abut on the surface of the piezoelectric transformer 2 in 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 projected.

Further, as shown in FIGS. 17B and 18A, the piezoelectric transformer 2 is attached to the node supporting projections 75 and 77.
Conductive film 152 that can electrically contact the positive and negative input electrodes of
And 153 are formed. These conductive films 152,
As shown in the drawing, 153 is led to the outside via a signal line formed by 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 electrically contacted with the output electrode is formed on the longitudinal support protrusions 83.
It is led out by a signal line by a wiring pattern provided on the mating surface of the support member 70 and the second support member 72 with an insulator interposed therebetween.

The first supporting member 70 and the second supporting member 71 described above are formed by, for example, pressing a film-shaped or sheet-shaped plate material. As another processing method, injection molding with a die can be used. At the time of assembly, the positioning protrusions 73A and 74A are fitted into the positioning holes 73B and 74B, respectively, and their mating surfaces are integrated with each other by bonding with an adhesive or a double-sided tape or heat welding.

In the above structure, the piezoelectric transformer 2 is
It is accommodated in the accommodating concave portion 72, and is longitudinally supported in the state of being clamped in the widthwise direction by the widthwise supporting protrusions 79, 80 and 81, 82 and in the longitudinal direction by the longitudinal direction supporting protrusions 83, 84. The output electrode is connected to the conductive film 154 formed on the protrusion 83, and is further elastically (soft structure or soft structure) sandwiched by the node support protrusions 75, 76, 77, 78 in the thickness direction. Part support protrusion 75,
Since the input electrodes are connected to the conductive films 152 and 153 formed in 76, even when the vibration node position is changed or the vibration amplitude is increased due to the change of the vibration frequency, the conventional substrate is not required. Each of the conductive films 152, 153, and 154 is supported by the piezoelectric transformer 2 while being flexibly supported.
Can be connected to the input electrode and the output electrode respectively, and the vibration node can be restrained to forcibly suppress the vibration, or the input voltage can be reliably applied to the piezoelectric transformer 2 without destroying the piezoelectric transformer 2. The transformed voltage can be output from the piezoelectric transformer 2.

(XI) Eleventh Embodiment FIGS. 19 and 20 show a piezoelectric transformer electrode connection structure 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 configured symmetrically, and a piezoelectric transformer housing recess is formed in each of the support members to sandwich the piezoelectric transformer in a substantially sandwich shape. Is what you are trying to do.

The electrode connection structure of this piezoelectric transformer is the first
The supporting member 86 and the second supporting member 86 paired with the first supporting member 86.
The support member 87 and the piezoelectric transformer 2 are included. The first supporting member 86 is formed of a flexible or elastic thin plate body such as polyester resin, and the piezoelectric transformer 2 is provided in the central portion with appropriate gaps in the width direction and the longitudinal direction of the piezoelectric transformer 2. A storage recess 88 having a size capable of storing 2 is formed.

At the bottom of the storage recess 88, the piezoelectric transformer 2 is provided.
Of the semi-cylindrical node portion protruding toward the second support member 87 so as to be able to come into contact with the vibration node portion or its vicinity.
2, 94 are formed, and these node supporting protrusions 92, 94 are formed.
Have appropriate elasticity, and their tips come into contact with the surface of the piezoelectric transformer 2 in line contact (or point contact).

A pair of width-direction supporting projections 96, 97 facing each other on the inner surface of the storage recess 88 in the width direction so as to be able to contact the vibrating nodes of the piezoelectric transformer 2 or positions in the vicinity thereof.
And 98 and 99, respectively. The width-direction support protrusions 96, 97 and 98, 99 have appropriate elasticity so that they come into line contact (or point contact) with the width-direction end surface of the piezoelectric transformer 2.

A pair of longitudinal support protrusions 100 and 101 facing each other are formed on the inner surface of the storage recess 88 in the longitudinal direction. Similarly, these longitudinal support protrusions 100 and 101 are formed.
101 also has an appropriate elasticity, and the tips thereof come into contact with the longitudinal end face of the piezoelectric transformer 2 in line contact (or point contact).

A positioning projection 90A projecting toward the second support member 87 is provided at a position (pasted portion) near one end of the storage recess 88 in the longitudinal direction of the first support member 86. The positioning protrusion 90A is provided at a position to be fitted into the positioning hole 90B of the second support member 87 described later. Further, a positioning hole 91B is formed at a position (pasting portion) near the other end of the storage recess 88, and the positioning hole 91B is provided in a second support member 87 described later.
It is provided at a position that fits into the positioning protrusion 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 supporting member 86 from bending at the peripheral edge of the. The second support member 87 has a symmetrical structure with the first support member 86, that is, the second support member 87 becomes the second support member 87 by reversing the direction of the first support member 86. For the sake of convenience, each component is assigned a different symbol, but the configuration itself is the same as the first support member 86. As described above, the symmetrical structure is advantageous in terms of reduction of component types, manufacturing labor, and manufacturing cost because only one mold is required for press working or injection molding.

In the second support member 87, a storage recess 89 having a size capable of storing the piezoelectric transformer 2 is formed in the central portion with an appropriate gap in the width direction and the longitudinal direction of the piezoelectric transformer 2. Semi-cylindrical node support projections 93, 95 projecting toward the first support member 86 are formed on 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 in the vicinity thereof. , These node supporting projections 93, 9
5 has an appropriate elasticity, and their tips are piezoelectric transformers 2
It is designed to come into line contact (or point contact) with the surface of.

A pair of width-direction supporting projections (see FIG. 3) facing each other on the inner surface of the storage recess 89 in the width direction so as to be able to contact the vibrating nodes of the piezoelectric transformer 2 or a position in the vicinity thereof (see FIG. 3).
(See (A) width direction support protrusions 96, 97 and 98, 99). A pair of longitudinal support protrusions 102, 103 facing each other are formed on the inner surface of the storage recess 89 in the longitudinal direction. Similarly, the longitudinal support protrusions 102, 103 also have appropriate elasticity. The tips thereof are in line contact (or point contact) with the longitudinal end surface of the piezoelectric transformer 2.

A positioning projection 91A projecting toward the first support member 86 is provided at a position (pasted portion) in the vicinity of the other end of the storage recess 89 in the longitudinal direction of the second support member 87. The positioning protrusion 91A is provided at a position to be fitted into the positioning hole 91B of the first support member 86. In addition, a positioning hole 90B is formed at a position (pasted portion) in the vicinity of one side end of the storage recess 89, and the positioning hole 90B is provided in the positioning protrusion 9 of the first support member 86.
It is provided at a position that fits into 0A. Although not shown, a reinforcing rib (FIG. 17) for preventing the second support member 87 from bending is also provided on the peripheral edge of the second support member 87.
(See reference numeral 111 in (A)) is preferably formed.

Further, as shown in FIG. 19B, conductive films 152 and 153 capable of electrically contacting the positive and negative input electrodes of the piezoelectric transformer 2 are formed on the node supporting projections 92 and 93. ing. As shown in the drawing, the conductive films 152 and 153 are led out to the outside via 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 on the longitudinal support protrusion 100.
A conductive film 154 that can be electrically contacted with the output electrodes of the first support member 86 and the second support member 8 is formed if necessary.
7 is guided to the outside by a signal line formed by a wiring pattern provided on the mating surface with 7 via an insulator.

As the first supporting member 86 and the second supporting member 87, a film-shaped or sheet-shaped plate material can be used, for example, by press working or injection molding. At the time of assembly, the positioning protrusions 90A and 91A and the positioning holes 90B and 91B are fitted together, and the mating surfaces of them are integrated by adhesion with an adhesive or double-sided tape or the like or heat welding.

In the above structure, the piezoelectric transformer 2 is
It is housed in the housing recess 88, and is sandwiched by the width-direction supporting projections 96 to 99 in the width direction inside the housing recess 88, and is sandwiched by the longitudinal-direction supporting projections 100 and 101 in the longitudinal direction. Conductive film 15 formed
4 is connected to the output electrode, and is elastic by the node supporting projections 92 to 95 in the thickness direction (flexible structure or soft structure).
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 by the electrodes. Even when the node position fluctuates or the vibration amplitude increases, each conductive film 15 is flexibly supported.
2, 153, and 154 can be connected to the input electrode and the output electrode of the piezoelectric transformer 2, respectively, and the vibration node is constrained to forcibly suppress the vibration, or the piezoelectric transformer 2 is not damaged. It is possible to reliably apply the input voltage and output the transformed voltage from the piezoelectric transformer 2.

(XII) Twelfth Embodiment FIGS. 21 and 22 show an electrode connection structure for a piezoelectric transformer according to a twelfth embodiment of the present invention. The electrode connection structure of the piezoelectric transformer according to this embodiment considers the displacement of the longitudinal end portion of the piezoelectric transformer 2 during vibration, and always applies tension to the longitudinal end portion of the piezoelectric transformer 2 in a good state. , Which discloses a supportable example.

Since the basic structure is the same as that of the eleventh embodiment (FIGS. 19 and 20), only different parts will be described below, the same parts will be denoted by the same reference numerals, and the description will be omitted. The description of the embodiment is incorporated. This embodiment is different from the eleventh embodiment in that one end face of the piezoelectric transformer 2 in the longitudinal direction and the first support member 8 are arranged.
6 and the second support member 87, the ring portion 107 of the press contact body 106 is interposed, and similarly, between the other end face of the piezoelectric transformer 2 in the longitudinal direction and the first support member 86 and the second support member 87. The ring portion 109 of the press contact body 108 is interposed between the two. In addition, the conductive films 152, 1 are provided on the node supporting projections 92, 93 which project into the storage recesses 88, 89, respectively.
53 is provided, and the conductive film 152 serves as the width-direction support protrusion 9.
7 and 103 are drawn out to the outside, and the conductive film 153 is drawn out to the outside via the width direction supporting projections 96 and 102.

As can be seen from the shape of the ring portions 107 and 109, the ring portions 107 and 109 are pressed against the longitudinal end surface of the piezoelectric transformer 2 and therefore provide appropriate tension to the longitudinal end surface of the piezoelectric transformer 2. The displacement of the longitudinal end portion of the piezoelectric transformer 2 during vibration draws an arc-shaped locus (vibration in the vertical direction in FIG. 21B) about each vibrating node portion. Since the ring portions 107 and 109 having appropriate elasticity come into contact with the longitudinal end surface of the piezoelectric transformer 2, it is possible to support the piezoelectric transformer 2 with an appropriate degree of freedom without restraining the movement of the longitudinal end portion of the piezoelectric transformer 2. In addition, since it is possible to always maintain a good pressure contact state, in particular, 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 maintain good electrical contact. The ring portions 107 and 109 may be formed in a hook shape or a hook shape. Other functions are similar to those of the 11th embodiment.

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

The electrode connection structure of the piezoelectric transformer according to this embodiment is similar to the embodiment shown in FIGS. 17 and 18, and is formed by a thin plate-like plate body having flexibility or elasticity. The piezoelectric transformer 2 is supported in a sandwich shape by the first supporting member 70 and the second supporting member 71, and the node supporting projections 75A, 76A, 77A formed on the first supporting member 70 and the second supporting member 71, respectively. , 78A (Fig. 1
7 and FIG. 18, corresponding to 75 to 78), width direction supporting protrusions 79A, 80A, 81A and 82A (corresponding to 89 to 82 in FIGS. 17 and 18) and longitudinal direction supporting protrusions 83A and 84A (FIG. 83 in FIGS. 17 and 18,
(Corresponding to 84) is formed in a state of being cut and raised at each corresponding position in the vicinity of the vibration node of the piezoelectric transformer 2, and the conductive films 152, 153 are respectively formed on the longitudinal direction supporting projection 37A and the node supporting projections 42A, 44A. 1 and 154 are formed differently.

The longitudinal support projections 83A, 84A, the width support projections 79A, 80A, 81A, 82A, the node support projections 75A, 76A, 77A, 78A are the first support member 70 and the second support member. It is formed by punching and bending 71. As another molding method,
When a resin material is used for the first support member 70 and the second support member 71, injection molding with a mold can be used. In addition, in this embodiment, the longitudinal support protrusions 83A, 84A and the width direction support protrusions 79A, 80A, 8 are provided.
1A, 82A, node support projections 75A, 76A, 77A,
Each tip of 78A is bent and bent at a predetermined angle with respect to these extending directions. In addition, the longitudinal support protrusion 83
The bending direction of A and 84A may be configured to project in the opposite direction to the mode shown in FIG. 24 (A) or to project in a loop shape. Alternatively, each tip may be configured to extend only in these extending directions.

As a result, the longitudinal support projections 83A, 84
A, the contact portions of the node supporting projections 75A, 76A, 77A, and 78A with the piezoelectric transformer 2 are curved, so that the contact is gentle, and even if the vibration node position changes, some displacement occurs. It becomes possible to support it flexibly.

With the above-mentioned structure, the longitudinal supporting projection 8
3A, 84A, width direction supporting protrusions 79A, 80A, 81
A, 82A, node support projections 75A, 76A, 77A, 7
8A has elasticity, and the conductive films 152 and 153 are formed on the node supporting protrusions 75A and 77A, and the conductive film 154 is formed on the longitudinal direction supporting protrusions 83A. Each conductive film 152 in a state of being supported by a flexible structure (or a soft structure) in the direction, the width direction and the longitudinal direction,
153 and 154 are connected to the input electrode and the output electrode of the piezoelectric transformer 2, respectively, and can be flexibly supported even when the vibration node position fluctuates or the vibration amplitude increases due to the fluctuation of the vibration frequency. It is possible to suppress the vibration by constraining the node portion, to reliably apply the input voltage to the piezoelectric transformer 2 without destroying the piezoelectric transformer 2, and to reliably output the transformed voltage from the piezoelectric transformer 2. it can. In addition, the longitudinal support protrusions 83
A, 84A, width direction supporting protrusions 79A, 80A, 81A,
82A, node support projections 75A, 76A, 77A, 78A
Since the punching process and the bending process can be adopted in the molding of, 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 for 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 the first supporting member 7 supporting one of the vibrating nodes.
0 node supporting protrusions 76B and second supporting member 71 node supporting protrusions 76C and the node supporting protrusions 76 such that gaps 76D and 76E are provided between the tips of the node supporting protrusions 76C and the surface of the piezoelectric transformer 2.
B and 76C are formed, and the longitudinal support protrusion 84 is formed.
B, 84C, and 83B, 83C are formed so as to leave gaps 84D, 83D between them and the longitudinal end face of the piezoelectric transformer 2. The appropriate lengths of the gaps 84D and 83D are set by experimentally and empirically finding the possible variation of the vibration frequency and the variation width of the vibration amplitude. In addition, the node support protrusion 75B of the first support member 70 and the second support member 71.
Conductive films 152 and 153 are formed on the node supporting projection 75C, and the conductive films 152 and 153 are connected to the input electrodes of the piezoelectric transformer 2.

Thus, one of the vibrating nodes of the piezoelectric transformer 2 and the longitudinal direction are spaced by 76D, 76E, 83D, 84D.
Node supporting protrusion 75 having a more flexible structure through the conductive film and conductive films 152 and 153 formed on the other side of the vibrating node.
Since it is held between B and 75C, the piezoelectric transformer 2 is flexibly supported and reliably contacts the electrodes of the piezoelectric transformer 2 even when the vibration node position fluctuates or the vibration amplitude increases due to the fluctuation of the vibration frequency. It is possible to restrain the vibration by restraining the vibrating nodes, and to reliably apply the input voltage to the piezoelectric transformer 2 without destroying the piezoelectric transformer 2 and to output the voltage transformed from the piezoelectric transformer 2. can do. That is, even if the vibrating node portion is set in advance as a position corresponding thereto, it may be different from the preset position depending on the ratio of the thickness, width, length, etc. of the piezoelectric transformer 2. Even in such a case, the piezoelectric transformer 2 can be freely supported with a predetermined vibration amplitude without suppressing the vibration, and in particular, the node supporting projection 76 can be supported.
B, 76C and longitudinal support protrusions 84B, 84C, 83
A gap 76C is provided between each of B and 83C and the piezoelectric transformer 2,
Since 76E, 84D, and 83D are formed so as to be placed, the node supporting protrusion 75B is arranged so that the vibration of the piezoelectric transformer 2 does not form a gap between the true vibrating nodes of the piezoelectric transformer 2. , 75C, so that they are naturally moved and supported. The transformed output voltage of the piezoelectric transformer 2 in the case of the present embodiment is output from the lead wiring by directly connecting the flexible lead wiring to the side end portion of the piezoelectric transformer 2 by soldering or the like. You can

(XV) Fifteenth Embodiment FIG. 26 shows a piezoelectric transformer electrode connection structure according to a fifteenth embodiment of the present invention. The electrode connection structure of the piezoelectric transformer according to this embodiment provides an appropriate tension for supporting the longitudinal end portion of the piezoelectric transformer 2 as in the twelfth embodiment. It discloses an example in which electrodes are provided side by side.

In the electrode connection structure of the piezoelectric transformer according to this embodiment, the supporting member 113, 115 is used as the supporting member in addition to the housing recess 88 and the housing recess 89, but the supporting device itself. Can be applied to, for example, the one disclosed in the twelfth embodiment, and is not limited to this embodiment. As shown in FIG. 26, the pair of first support member 86 and second support member 87.
Receiving recesses 88, 89 are formed in each of them, and node supporting projections 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
The support substrate 115 is interposed between the second support member 87a and the second support member 87a. Wiring patterns 116 and 129 are formed on the opposing surfaces of the support substrate 115 in an electrically insulated state from each other.

The wiring pattern 116 has a node supporting projection 92.
An electrode supporting protrusion 117 made of an insulating sheet (or film) is extended so as to be interposed between the piezoelectric transformer 2 and one (positive side +) input electrode of the piezoelectric transformer 2 and formed on the electrode supporting 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 against the node supporting projections 92 to input the piezoelectric transformer 2. It is in electrical contact with the electrode 119.

Similarly, in the wiring pattern 129, an electrode supporting protrusion made of an insulating sheet (or film) is interposed between the node supporting protrusion 93 and the other (negative side) input electrode of the piezoelectric transformer 2. 123 is extended, and one of the wiring patterns 124 formed on the electrode supporting projection 123 is electrically connected to the wiring pattern 129 at the connection portion 128 by soldering or the like.
The other one is electrically contacted with the other (negative side) input electrode 125 of the piezoelectric transformer 2 in a form of being pressed into contact with the node supporting projection 93.

The base end portion of the support protrusion 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 end portion of the support protrusion 120 is bent into an arc shape. It is in electrical contact with the output electrode 122 of the piezoelectric transformer 2. Support protrusion 120 and output electrode 122
The contact portion 121 may be left in the pressed contact state or may be fixed by soldering or the like. The piezoelectric transformer 2
Between the other end in the longitudinal direction of the support and the support base 115.
26 may be attached and urged. In addition, the pointing protrusion 120
21B may have a ring shape as shown by a broken line and may have a mode 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 side by side, necessary wiring can be performed at the same time as 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 an inexpensive polyester resin having good workability, and heat resistance is not particularly required. On the other hand, the electrode support protrusions 117 and 123 are also formed of a resin film (or sheet), but since soldering is performed, heat resistance is required rather than workability, so it is somewhat expensive,
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 for 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 for accommodating the drive circuit or the control circuit of the piezoelectric transformer 2 so as to integrate the piezoelectric transformer 2 with the drive circuit or the control circuit. The above example is disclosed.

The basic structure is the electrode connection structure of the piezoelectric transformer according to the tenth embodiment (see FIGS. 17 and 18).
Since it is similar to, only the different parts will be explained below,
The same parts are designated by the same reference numerals, and detailed description thereof will be omitted. In this embodiment, a circuit housing part 141 for housing the 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 part 141. The board 147 is housed, and the space inside the circuit housing 141 is filled with resin 151 as necessary. Reference numeral 149 indicates a wiring connecting between the circuit composed of the circuit element 148 and the output electrode of the piezoelectric transformer 2, and reference numeral 150 indicates 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 the piezoelectric transformer 2 can be supported by the first supporting member 70 and the second supporting member 71. The circuit board 147 can also be supported, and the piezoelectric transformer device can be made compact.

(XVII) Application Examples The scope of the present invention is not limited to the above embodiments, and various modifications or applications are possible as described below.
That is, in each of the above embodiments, the piezoelectric transformer of the type in which two vibrating nodes are generated has been described as an example, but the present invention is a piezoelectric transformer of a type having another vibration pattern, for example, a third rosen (vibration). It is also applicable to piezoelectric transformers of the type in which three nodes are generated).

[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 length direction supporting protrusion provided in the mounting opening of the substrate. The vibrating nodes of the piezoelectric transformer are supported by the elastic node supporting protrusions provided on the separate support member. Since the vibrating node portion of the piezoelectric transformer is thus supported by the elastic node supporting protrusion, it is possible to support the vibrating node portion with a proper degree of freedom without restraining the vibrating node portion in a fixed manner. it can. As a result, it is possible to adapt to the increase of the vibration amplitude at the time of high output, and it is possible to prevent the piezoelectric transformer from being broken. In addition, the piezoelectric element can be properly supported without suppressing the vibration even when the vibration node position changes due to the change of the vibration wave number due to the change of the environmental condition or the like. In addition, the conductors provided on the supporting protrusions can supply signals to the input electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, 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 projections and the length direction support projections provided in the mounting opening of the substrate, and the support member is a separate member from the support. The vibrating nodes of the piezoelectric transformer are supported by the elastic node supporting protrusions, and the conductors provided on the node supporting protrusions are brought into contact with the electrodes of the piezoelectric transformer. The vibrating node of the piezoelectric transformer is supported by the knot supporting protrusion, which can be adapted to the increase of the vibration amplitude at high output, the piezoelectric transformer can be prevented from being broken, and the vibrating node can be fixed. It has an effect that the conductor and the electrode of the piezoelectric transformer can be connected in a state having an appropriate degree of freedom without restraining the vibration to suppress the vibration. In addition, the piezoelectric element can be properly supported without suppressing the vibration even when the vibration node position changes due to the change of the vibration wave number due to the change of the environmental condition or the like. In addition, the conductors provided on the support protrusions can receive and send signals to the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, facilitating assembly and thermal effects of soldering. Can be avoided. Further, according to the present invention, since each supporting protrusion can be formed by cutting and raising,
The width direction support protrusion, the length direction support protrusion, and the node support protrusion can be easily formed, the amount of support strength and elasticity can be adjusted, and the weight reduction due to notches and cutting is possible. The conductor provided on each of the support protrusions thus formed has the effect of easily and reliably connecting to the electrodes of the piezoelectric transformer. In addition, the conductors provided on the supporting protrusions can supply signals to the input electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, 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 obtained. It is possible to adjust the additional amount of the electric field, and the conductor provided on each of the supporting projections formed in this way has the effect of more reliably connecting to the electrode of the piezoelectric transformer. In addition, the conductors provided on the support protrusions allow signals to be received by the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, facilitating 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, the width direction support protrusion, the longitudinal direction support protrusion and the node portion support protrusion can be easily formed, and the vibration node portion of the piezoelectric transformer can be formed. It is possible to adjust the support strength and the amount of elasticity added for proper support without excessively restraining the piezoelectric transformer, and the conductors provided on the respective support projections formed in this manner make it easy and reliable It has the effect of being connectable to the electrodes. In addition, the conductors provided on the support protrusions allow signals to be received by the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, facilitating assembly and reducing the thermal effects of soldering. Can be avoided. Further, according to the present invention, the conductor provided on the node supporting projection located on one of the vibrating nodes of the piezoelectric transformer abuts and supports one of the opposing vibrating nodes,
Since the vibration supporting portion located on the other side supports the vibration connecting portion in a loosely fitted state with a gap between the vibration supporting portion and the other opposing vibration connecting portion, it is more free without excessively suppressing the vibration connecting portion. In such a state, the conductor provided on the node supporting projection located on one side while being properly supported has the effect of connecting to the electrode of the piezoelectric transformer. In addition, since the conductors provided on the node supporting protrusions can receive and send signals to the electrodes of the piezoelectric transformer, the conventional wiring, soldering, etc. are not required, facilitating the assembly and the heat of the soldering. According to the present invention, the longitudinal direction supporting protrusion has a gap between the longitudinal direction end face of the piezoelectric transformer and the longitudinal direction supporting face to support the piezoelectric transformer in a loosely fitted state, and A conductor provided on the node supporting protrusion, the node supporting projection located on the vibration node supporting the vibration node in a loosely fitted state with a gap between the node supporting protrusion and the other vibration node. To the electrode of the piezoelectric transformer, a degree of freedom is also provided in the longitudinal direction, and the conductor provided on the node supporting protrusion in a properly supported state without excessively suppressing the vibration node. Has the effect that it can be electrically connected to the electrodes of the piezoelectric transformer. I do. In addition, since it is possible to receive a signal to the electrode of the piezoelectric transformer by the conductor provided on the node supporting protrusion, the conventional wiring,
Since soldering and the like are not necessary, the assembling can be facilitated and the thermal influence of the soldering can be avoided. According to the present invention,
The piezoelectric transformer is supported by the first support member and the second support member, and the conductor is formed on the support protrusion provided on at least one of the first support member and the second support member. In addition to the need for a conventional substrate, it is possible to reduce the number of component types, and it is possible to connect a conductor to the electrodes of the piezoelectric transformer. Further, even in the structure having only such a supporting member, since the vibration node portion of the piezoelectric transformer is supported by the node portion supporting protrusion having elasticity,
It is possible to support the vibrating node portion with an appropriate degree of freedom without fixedly constraining the vibration and suppressing the vibration. As a result, it is possible to adapt to the increase of the vibration amplitude at the time of high output, and it is possible to prevent the piezoelectric transformer from being broken. In addition, the piezoelectric transformer can be properly supported without suppressing the vibration even when the vibration node position changes due to the change of the vibration wave number due to the change of the environmental conditions. In addition, the conductors provided on the support protrusions allow signals to be sent to the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, facilitating assembly and reducing the thermal effects of soldering. This can be avoided. Further, according to the present invention, it is possible to eliminate the conventional substrate, reduce the number of parts, and connect the conductor to the electrode of the piezoelectric transformer. Further, even with such a structure of only the supporting member, it is possible to adapt to the increase of the vibration amplitude at the time of high output, and it is possible to prevent the destruction of the piezoelectric transformer. Further, it is possible to properly support the piezoelectric transformer without suppressing the vibration even with respect to the fluctuation of the vibration node position caused by the fluctuation of the vibration wave number due to the change of the environmental condition and the like. In addition, the conductors provided on the support protrusions allow signals to be received by the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, facilitating 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 conventional case, and it is possible to reduce the number of component types, and at the same time, it is possible to connect a conductor to an electrode of the piezoelectric transformer. Further, even with such a structure of only the supporting member, it is possible to adapt to the increase of the vibration amplitude at the time of high output, and it is possible to prevent the destruction of the piezoelectric transformer. In addition, the piezoelectric transformer can be properly supported without suppressing the vibration even with respect to the fluctuation of the vibration node position caused by 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 protrusions allow signals to be received by the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, facilitating assembly and reducing the thermal effects of soldering. Can be avoided. Further, according to the present invention, there is an effect that a conventional substrate is not required, the number of parts can be reduced, and a conductor can be connected to an electrode of a piezoelectric transformer. Further, even with such a structure of only the supporting member, it is possible to adapt to the increase of the vibration amplitude at the time of high output, and it is possible to prevent the destruction of the piezoelectric transformer. In addition, the piezoelectric transformer can be properly supported without suppressing the vibration even with respect to the fluctuation of the vibration node position caused by 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 protrusions allow signals to be received by the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, facilitating 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, the number of component types can be reduced, the processing steps can be omitted, and the conductor can be connected to the electrodes of the piezoelectric transformer. Further, it is possible to adapt to the increase of the vibration amplitude at the time of high output, and it has an effect of preventing the destruction of the piezoelectric transformer. Further, it has an effect of properly supporting the piezoelectric transformer without suppressing the vibration even with respect to the fluctuation of the vibration node position caused by 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 protrusions allow signals to be received by the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, facilitating assembly and reducing the thermal effects of soldering. Can be avoided. Further, according to the present invention, the longitudinal end face of the piezoelectric transformer is always urged by the pressing body with a constant pressing force, and the conductor can be connected to the electrode of the piezoelectric transformer in a state of being favorably supported with an appropriate degree of freedom. Have an effect.
Further, it is possible to adapt to the increase of the vibration amplitude at the time of high output, and it has an effect of preventing the destruction of the piezoelectric transformer. In addition, the piezoelectric transformer can be properly supported without suppressing the vibration even with respect to the fluctuation of the vibration node position caused by 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 protrusions allow signals to be received by the electrodes of the piezoelectric transformer, eliminating the need for conventional wiring and soldering, facilitating assembly and reducing the thermal effects of soldering. Can be avoided. Further, according to the present invention, a circuit required for driving the piezoelectric transformer can be integrated with the piezoelectric transformer by the circuit housing portion, the device configuration can be made compact, and the conductor can be connected to the piezoelectric transformer. It has the effect of being connectable to the electrodes. Further, it is possible to adapt to the increase of the vibration amplitude at the time of high output, and it has an effect of preventing the destruction of the piezoelectric transformer. In addition, even if the vibration node position changes due to changes in the vibration wave number due to changes in environmental conditions,
This has the effect of properly supporting the piezoelectric transformer without suppressing vibration. In addition, since it is possible to receive signals to the electrodes of the piezoelectric transformer by the conductor provided on the support protrusion, conventional wiring, soldering, etc. are not required,
Ease of assembly and avoiding thermal influence of soldering.

[Brief description of drawings]

FIG. 1A is a plan view showing the inside of an electrode connection structure for a piezoelectric transformer according to a first embodiment of the present invention.
FIG. 3B is a plan view showing the electrode connection structure of the piezoelectric transformer according to the first embodiment of the present invention.

FIG. 2 (A) 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 the electrode connection structure of the piezoelectric transformer according to the second embodiment of the invention. FIG. 6B is a plan view showing the electrode connection structure of the piezoelectric transformer according to the second embodiment of the present invention.

FIG. 4 (A) is a diagram of FIG. 3 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 for 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. 6 (A) is a diagram showing a third embodiment of the present invention.
It is EE sectional drawing of. FIG. 6B is a sectional view taken along line FF of FIG. 5 according to the third embodiment of the present invention.

FIG. 7A is a plan view showing the inside of the electrode connection structure of the piezoelectric transformer according to the fourth embodiment of the invention. (B) It is a top view which shows the electrode connection structure of the piezoelectric transformer which concerns on the 4th Embodiment of this invention.

FIG. 8A is a diagram showing a fourth embodiment of the present invention.
GG sectional view of FIG. 7B is a sectional view taken along line HH 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 for 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 the line I-I of FIG. 9 according to the fifth embodiment of the present invention. FIG. 9B is a sectional view taken along the line JJ of FIG. 9 according to the fifth embodiment of the present 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 an example of another support member according to the ninth embodiment of the invention.

FIG. 16A is a perspective view showing an example of another supporting member according to the ninth embodiment of the present invention. FIG. 15B is a sectional view taken along line KK of FIG. 15B according to the ninth embodiment of the present invention.

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

FIG. 18 (A) is a sectional view taken along line MM in FIG. 17 (A). (B) is a front view of the electrode connection structure of the piezoelectric transformer which concerns on 10th Embodiment. (C) is a side view of the electrode connection structure of the piezoelectric transformer which concerns on 10th Embodiment.

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

20A is a cross-sectional view taken along line OO in FIG. FIG. 16B 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 which concerns on 11th Embodiment.

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

22A is a cross-sectional view taken along the line QQ in FIG. (B) is a front view of an 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 which concerns on 12th Embodiment.

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

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

FIG. 25A is a sectional view of an electrode connection structure for a piezoelectric transformer according to a fourteenth embodiment of the present invention. (B) is sectional drawing of the electrode connection structure of the piezoelectric transformer which concerns on the 14th Embodiment of this invention.

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

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

FIG. 28 (A) is a plan view showing a main part of a conventional piezoelectric transformer electrode connection structure. FIG. 1B is a perspective view showing a main part of a conventional piezoelectric transformer electrode connection structure.

[Explanation of symbols]

1 Substrate 2 Piezoelectric Transformer 3 Thin Plate 4 Thin Plate 5, 6 Longitudinal Support Protrusions 7, 8, 9, 10 Width Support Protrusion 11 Mounting Openings 12, 13, 14, 15 Node Support Protrusions 16, 17, 18 , 19 Positioning projections 20, 21 Positioning holes 22, 23 Longitudinal support projections 24, 25, 26, 27, 28 Width support projections 28, 29 Longitudinal support projections 30, 31 Support projections 32 Longitudinal gap 33 Longitudinal gap 34 Node gap 35 Node gap 36, 37 Longitudinal support projecting piece 38, 39, 40, 41 Width supporting projecting piece 42, 43, 44, 45 Node supporting projecting piece 46 Wiring pattern 47 Good conductor layer 48 Control circuit chip 49 Heat-resistant film 50 Recessed portion 51 Rectification circuit board 52 Storage convex portion 53 Terminal 54 Substrate 55 Support protrusion 56 Support protrusion 57 Mounting opening 58 Width direction support protrusion 59 D (support member) 60 width direction supporting protrusion 61 node joint supporting protrusion 62 thin plate 63 thin plate 64 width direction supporting protrusion 65 width direction supporting protrusion 66 width direction supporting protrusion 67 node supporting protrusion 68 width direction supporting protrusion Part 69 Node support projection 70 First support member 71 Second support member 72 Storage recess 73, 74 Positioning projection 75, 76, 77, 78 Node support projection 79, 80, 81, 82 Width direction support projection 83, 84 Longitudinal direction support protrusion 86, 86a 1st support member 87, 87a 2nd support member 88, 89 Storage recess 90 91 Positioning protrusion 92, Node support protrusion 93, 94, 95 96 97, 98, 99 Width-direction supporting protrusions 100, 101, 102, 103, 104, 105 Longitudinal-direction supporting protrusions 106, 108 Pressure contact member 107, 109 Ring portion 110 Drive circuit 111 Ribs 113, 115 Substrates 114, 116, 118, 119, 124, 125, 1
29 wiring patterns 117, 123 electrode support protrusions 120 support protrusions 121 abutment portions 126 support protrusions 127, 128 connection portions 141 circuit housing recesses 147 circuit boards 148 circuit elements 149, 150 wirings 151 filling resins 152, 153, 154, 155 conductive film

Claims (16)

[Claims] 1. A support in the width direction of a plate-shaped piezoelectric transformer having 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 abutting on the end face in the width direction of the piezoelectric transformer. A substrate having a mounting opening provided with a protrusion and a longitudinal support protrusion abutting the longitudinal end face; and a node supporting protrusion abutting a vibration node of a piezoelectric transformer housed in the mounting opening. And a supporting member formed of a thin plate material having flexibility or elasticity, wherein the supporting protrusion is provided with a conductor that electrically contacts the electrode of the piezoelectric transformer. Piezoelectric transformer electrode connection structure. 2. A plate-shaped piezoelectric transformer, a substrate provided with a mounting opening for accommodating the piezoelectric transformer with a gap around the width direction and the longitudinal direction, and a piezoelectric housed in the mounting opening. A width direction supporting protrusion abutting on the widthwise end face of the transformer, a longitudinal direction supporting protrusion abutting on the longitudinal end face, and a node supporting protrusion abutting on the vibration node of the piezoelectric transformer. A piezoelectric transformer, comprising: a supporting member formed of a thin plate material having flexibility or elasticity, and a conductor electrically contacting an electrode of the piezoelectric transformer is provided on the node supporting protrusion. Electrode connection structure. 3. The electrode connection structure for a piezoelectric transformer according to claim 3, wherein the supporting member formed of the flexible or elastic thin plate member includes the width-direction supporting protrusions, the longitudinal-direction supporting protrusions, and An electrode connection structure for a piezoelectric transformer, wherein the node supporting protrusion is formed by a protruding piece formed by cutting and raising each corresponding position in the thin material. 4. The electrode connecting structure for a piezoelectric transformer according to claim 4, wherein the tip ends of the width-direction supporting protrusion, the longitudinal-direction supporting protrusion, and the node-portion supporting protrusion are bent in the thickness direction. Electrode connection structure of the piezoelectric transformer characterized by being. 5. The electrode connection structure for a piezoelectric transformer according to claim 3, wherein the width direction support is formed by a protrusion formed by press working at each corresponding position of a support member made of a thin plate material having flexibility and elasticity. An electrode connection structure for a piezoelectric transformer, wherein the projection, the longitudinal support projection and the node support projection are formed on the thin plate. 6. A substrate provided with a mounting opening for accommodating the piezoelectric transformer with a space around the width and the longitudinal direction of a plate-shaped piezoelectric transformer, and a piezoelectric housed in the mounting opening. A width direction supporting protrusion abutting on the widthwise end face of the transformer, a longitudinal direction supporting protrusion abutting on the longitudinal end face, and a node supporting protrusion abutting on the vibration node of the piezoelectric transformer. A supporting member formed of a thin plate material having flexibility or elasticity, wherein in the supporting member, a node supporting protrusion located on one of the vibrating nodes of the piezoelectric transformer abuts on the one vibrating node. The node supporting protrusion located on the other side of the vibration node of the piezoelectric transformer has a gap between the other vibration node and supports the vibration node in a loosely fitted state, and the one vibration The piezo-electric transformer has Piezoelectric transformer electrode connection structure characterized in that conductor in electrical contact with the electrode is provided. 7. A substrate having a mounting opening for accommodating the piezoelectric transformer with a gap around the width and the longitudinal direction of the plate-shaped piezoelectric transformer, and a piezoelectric accommodated in the mounting opening. At the position corresponding to the width direction supporting protrusion provided at the position facing the widthwise end face of the transformer, the longitudinal direction supporting protrusion provided at the position facing the longitudinal direction end face, and the position corresponding to the vibration node of the piezoelectric transformer. A supporting member formed of a thin plate material having flexibility or elasticity, the supporting member having a node supporting protrusion provided therein, wherein the longitudinal supporting protrusion is a long side of the piezoelectric transformer. The piezoelectric transformer is supported in a loosely fitted state with a gap between it and the end face in the direction, and a conductor that is in electrical contact with the electrode of the piezoelectric transformer is provided on the node supporting protrusion. Characteristic piezoelectric transformer electrode connection Construction. 8. An electrode connection structure for a piezoelectric transformer, characterized in that the support member according to claim 7 and the support member according to claim 8 are combined. 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 thin plate member closing an opening of the storage recess of the first support member. Two supporting members, and the vibration node portion of the piezoelectric transformer is sandwiched by at least one of the first support member and the second support member at a position corresponding to the vibration node portion of the piezoelectric transformer. An electrode connecting structure for a piezoelectric transformer, wherein a supporting protrusion having elasticity is provided, and a conductor electrically contacting an electrode of the piezoelectric transformer is provided on the supporting protrusion. 10. A width direction of a plate-shaped piezoelectric transformer having a size capable of accommodating the piezoelectric transformer with a gap around the width direction and the longitudinal direction thereof, and abutting against the width direction end face of the piezoelectric transformer. From a first supporting member having a supporting protrusion and a longitudinal supporting protrusion that abuts the end face in the longitudinal direction and made of an elastic thin plate member, and a thin plate member closing an opening of a storage recess of the first supporting member. And a second supporting member that is formed between the first supporting member and the second supporting member. The vibrating node portion can be sandwiched by at least one of the first supporting member and the second supporting member at a position corresponding to the vibrating node portion of the piezoelectric transformer. An electrode connection structure for a piezoelectric transformer, characterized in that a supporting protrusion having different elasticity is provided, and a conductor electrically contacting the electrode of the piezoelectric transformer is provided on the supporting protrusion. 11. A width direction of a plate-shaped piezoelectric transformer having a size capable of accommodating the piezoelectric transformer with a gap around the width direction and the longitudinal direction and contacting the width direction end face of the piezoelectric transformer. A first supporting member made of an elastic thin plate member having a supporting protrusion and a longitudinal supporting protrusion abutting the longitudinal end face, and a pair of the first supporting member are formed symmetrically so that they can be attached. And a width-direction supporting protrusion that has a size capable of accommodating the piezoelectric transformer with a gap around the width direction and the length direction of the plate-shaped piezoelectric transformer and is in contact with the width-direction end face of the piezoelectric transformer. And a second supporting member made of an elastic thin plate member having a longitudinal supporting projection abutting on the longitudinal end face, wherein the first and second supporting members correspond to the vibrating nodes of the piezoelectric transformer. Vibration of the piezoelectric transformer in position An electrode connection for a piezoelectric transformer, comprising an elastic supporting protrusion capable of holding a node, and a conductor electrically contacting the electrode of the piezoelectric transformer is provided on the supporting protrusion. Construction. 12. The electrode connection structure for a piezoelectric transformer according to claim 10, wherein the first and second support members are provided at corresponding positions of a thin plate material having flexibility and elasticity. An electrode connection structure for a piezoelectric transformer, wherein each of the support portions is formed by a cut and raised piece. 13. The electrode connection structure for a piezoelectric transformer according to claim 10, wherein a support protrusion located on one of the vibration nodes of the piezoelectric transformer abuts on the one vibration node. The electrode connecting structure of the piezoelectric transformer, wherein the supporting protrusion located on the other side of the vibrating node is configured to support the other vibrating node in a loosely fitted state. 14. The electrode connection structure for a piezoelectric transformer according to claim 10, wherein the first support member is provided with one of the attachment portions near an end of the storage recess in the longitudinal direction of the first support member. A first positioning protrusion that protrudes toward the second support member is provided, and the first positioning member faces the first support member at the other attachment portion near the end of the storage recess in the longitudinal direction of the second support member. Second protruding
Positioning protrusion is provided, and a first positioning hole into which the second positioning protrusion can be fitted is formed in the other attachment portion of the first supporting member, and one of the second supporting members is formed. A second positioning hole into which the first positioning protrusion can be fitted, and the first positioning protrusion is formed into the second positioning hole.
And the second positioning protrusion is fitted in the first positioning hole to integrate the first support member and the second support member. Piezoelectric transformer electrode connection structure. 15. The electrode connection structure for a piezoelectric transformer according to claim 10, wherein an elastic arc or ring is provided between the longitudinal end surface of the piezoelectric transformer and the longitudinal inner wall of the housing recess. An electrode connection structure for a piezoelectric transformer, characterized in that a pressure-contacting body is interposed. 16. A first supporting member comprising a thin plate-shaped member having a storage recess capable of storing a plate-shaped piezoelectric transformer, and a thin plate-like member closing an opening of the storage recess of the first support member. No. 2 support member and a storage recess that is provided in at least one of the first support member and the second support member and stores the circuit of the piezoelectric transformer, and the first support member or the second support member. At least one of the supporting members is provided with a supporting protrusion that is disposed so as to project at a position corresponding to the vibrating node of the piezoelectric transformer and that is formed with elasticity. An electrode connection structure for a piezoelectric transformer, wherein a vibrating node portion of the transformer is sandwiched, and a conductor that is in electrical contact with an electrode of the piezoelectric transformer is provided on the support protrusion.