JP6609182B2 - Electronic device and manufacturing method thereof - Google Patents

Description

  The present invention relates to an electronic device and a method for manufacturing the same.

  Conventionally, an electronic device has been provided with a cylindrical electronic component. Patent Document 1 discloses a configuration in which a cylindrical capacitor connected to a terminal is mounted on an electronic circuit board.

JP 2010-35304 A

  Some electronic components have difficult adhesion properties such that the outer peripheral surface is difficult to be bonded by an adhesive. As a method of fixing such an electronic component to an electronic substrate or the like, for example, there is a method of fixing the electronic component by applying an adhesive to a connection terminal of the electronic component.

  However, in the method of fixing the connection terminal, the main body portion of the electronic component is not restrained. Therefore, when vibration or the like is input, the main body portion may vibrate using the fixed connection terminal as a fulcrum. Such vibration of the main body of the electronic component may cause the connection terminal to bend and reduce the durability of the connection terminal.

  The present invention has been made in view of the above-described problems, and more reliably fixes an electronic component provided in an electronic device.

A first invention is an electronic device provided with a cylindrical electronic component, and is locked over a base member in which a locking hole is formed, and the locking hole and the outer peripheral surface of the electronic component. The base member has a facing portion that is provided on the same surface as the mounting surface of the base member on which the electronic component is held and is opposed to the locking hole. It is a thermoplastic material that is locked over the locking hole, the outer peripheral surface of the electronic component, and the opposing portion to hold the electronic component, and has fluidity and hardens with time .

In the first invention, since the outer peripheral surface of the electronic component and the base member are locked by the locking portion, the electronic component can be fixed to the base member regardless of the adhesiveness of the outer peripheral surface of the electronic component. Further, since the facing portion serves as a stopper for the thermoplastic material injected through the locking hole to form the locking portion, the injected thermoplastic material is easily applied to the outer peripheral surface of the electronic component. Therefore, the locking portion can be easily formed. In addition, since the same thermoplastic material can be used for fixing other electronic components to the base member and forming the locking portion, the manufacturing cost of the electronic device is reduced.

  The second invention is characterized in that the locking portion is locked to the outer peripheral surface of the electronic component at a position away from the mounting surface of the base member in a direction perpendicular to the central axis of the electronic component.

  In the second invention, the movement of the electronic component in the vertical direction is restricted by the locking portion.

  According to a third aspect of the present invention, the engaging portion engages with a recessed portion formed on the outer peripheral surface of the electronic component.

  In the third invention, the movement of the electronic component in the central axis direction is restricted by the locking portion.

According to a fourth aspect of the present invention, the base member has a terminal to which the electronic component is electrically connected, and a covering portion formed by a resin material molded on the terminal, and the facing portion is covered by the resin material. It is characterized by being molded integrally with the part.

According to the fourth invention , since the number of manufacturing steps is reduced, the facing portion can be formed at low cost .

5th invention is a manufacturing method of the electronic device by which a cylindrical 1st electronic component and the 2nd electronic component different from the said 1st electronic component are provided, Comprising: A 1st electron is provided in the one surface of the front and back of a base member. A step of arranging the component, a step of arranging the second electronic component on the other side of the front and back of the base member, and applying a thermoplastic material that has fluidity and hardens over time to the first electronic component on the base member And the step of locking the second electronic component to the base member by applying a thermoplastic material, and in the step of locking the first electronic component, the locking formed on the base member In the step of applying the thermoplastic material from the other surface of the base member through the hole to lock the first electronic component to the base member, and locking the second electronic component, the thermoplastic material is applied from the other surface of the base member. The second electronic component is locked to the base member, and the first electronic component The step of locking the A step of locking the second electronic component, characterized in that it is carried out in separate steps, respectively.

In 5th invention , latching of the 1st electronic component to a base member and latching of a 2nd electronic component are performed by apply | coating a thermoplastic material from the other surface of a base member. Thus, since the thermoplastic material is applied from the same direction, the manufacturing time can be shortened and the manufacturing cost can be reduced .

  According to the present invention, an electronic component provided in an electronic device is more securely fixed.

It is a perspective view which shows the bus-bar unit in the electronic controller which concerns on embodiment of this invention. It is a perspective view which shows the back surface of the bus-bar unit which concerns on embodiment of this invention. It is a perspective view which shows the state by which the electrolytic capacitor was hold | maintained by the electronic control apparatus which concerns on embodiment of this invention. It is sectional drawing along the AA in FIG. It is sectional drawing along the BB line in FIG.

  Hereinafter, electronic devices according to embodiments of the present invention will be described with reference to the drawings. Below, the case where an electronic device is the electronic control apparatus 100 is demonstrated.

  As shown in FIG. 1, the electronic control device 100 is a power supply substrate 1 as an electronic substrate that controls power supplied to a control object (not shown), and an electronic device that transmits and receives control signals to control the control object. A control board (not shown) as a board and a pair of electronic boards are provided. The electronic control device 100 also includes a bus bar unit 2 as a base member attached to the power supply substrate 1 and a cylindrical electronic component mounted on the bus bar unit 2.

  The electronic control device 100 is, for example, an ECU (Engine Control Unit) that controls an engine of a vehicle as a control object, or an ECU (Electronic Control Unit) that controls an electric power steering device as a control object. Device).

  The power supply substrate 1 is a flat printed board formed of a metal with high heat dissipation such as aluminum. The power supply substrate 1 is formed in a substantially rectangular shape, and an electronic circuit is formed on its surface 1A. A bus bar unit 2 as a base member on which electronic components are mounted is attached to the power supply substrate 1. The bus bar unit 2 electrically connects the power supply substrate 1 and the control substrate.

  As shown in FIG. 1, the bus bar unit 2 includes a plurality of terminals (bus bars) 3 and a covering portion 4 that holds the terminals 3 together on the power supply substrate 1. The covering portion 4 is formed by molding a plurality of terminals 3 with a resin material. The resin material is an insulating material that insulates the plurality of terminals 3 from each other. For convenience of explanation, in FIG. 1, only the terminals 3 to which leads 8 of electrolytic capacitors 5, 6 and 7 described later are connected are indicated, and the other terminals 3 are omitted.

  The bus bar unit 2 is provided with electrolytic capacitors 5, 6, and 7 as first cylindrical electronic components that remove noise and adjust the voltage to be constant, and second electronic components 11 (see FIG. 2). . The electrolytic capacitors 5, 6, and 7 are provided on the front surface (mounting surface) 2 </ b> A as one surface of the bus bar unit 2, and the second electronic component 11 is provided on the back surface 2 </ b> B as the other surface of the bus bar unit 2. The second electronic component 11 is, for example, a coil, a relay, a capacitor, or the like. The electrolytic capacitors 5, 6, 7 and the second electronic component 11 are mounted on the bus bar unit 2, respectively. In FIG. 2, the second electronic component 11 is schematically represented.

  In the electronic control device 100, as shown in FIG. 3, three electrolytic capacitors 5, 6, and 7 are mounted on the bus bar unit 2 so that the central axes are arranged substantially parallel to each other. Electrolytic capacitors 5, 6, and 7 are provided such that the central axis thereof is substantially parallel to surface 2A of bus bar unit 2 (surface 1A of power supply substrate 1) without being inclined. In addition, the electrolytic capacitors 5, 6, and 7 are supported by a support portion 4 </ b> A that is a part of the covering portion 4 as shown in FIG. 4.

  As shown in FIG. 3, the electrolytic capacitors 5, 6, and 7 are provided with a pair of leads 8 protruding from one end surface. The pair of leads 8 includes a parallel portion 8A extending in the central axis direction from one end face of the electrolytic capacitors 5, 6, and 7, and a vertical portion 8B bent from the parallel portion 8A and extending in a direction perpendicular to the central axis. Each of the pair of leads 8 has a vertical portion 8B electrically connected to the terminal 3 of the bus bar unit 2. Further, in the outer peripheral surfaces 5A, 6A, and 7A of the electrolytic capacitors 5, 6, and 7, recessed portions 5B, 6B, and 7B that are formed in an annular shape are formed. In addition, hollow part 5B, 6B, 7B is not restricted to cyclic | annular form, You may form in the circumferential part of outer peripheral surface 5A, 6A, 7A.

  The electronic control device 100 includes three holders 10 that hold the three electrolytic capacitors 5, 6, and 7 mounted on the bus bar unit 2 and fix the electrolytic capacitors 5, 6, and 7 to the bus bar unit 2. Hereinafter, the configuration of the holder unit 10 will be described in detail with reference to FIGS. 1 to 5. In the following, for convenience of explanation, as shown in FIG. 1, the direction in which the central axes of the electrolytic capacitors 5, 6, 7 extend is “axial direction”, and the direction in which the electrolytic capacitors 5, 6, 7 are aligned is “horizontal direction”. The direction perpendicular to the surface 1A of the power supply substrate 1 will be described as “vertical direction”. The axial direction, the horizontal direction, and the vertical direction are directions along three orthogonal axes that are orthogonal to each other. Further, in the vertical direction, as shown in FIG. 1, the power supply substrate 1 side is defined as “downward” and the opposite side is defined as “upward”.

  As shown in FIG. 3, the holder unit 10 includes a first holder unit 101 that holds two adjacent electrolytic capacitors 5 and 6, a second holder unit 102 that holds two adjacent electrolytic capacitors 6 and 7, Have The first and second holder portions 101 and 102 have the same configuration. Therefore, the configuration of the first holder unit 101 will be mainly described below, and the description of the configuration of the second holder unit 102 will be omitted as appropriate. Hereinafter, the first holder part 101 is also simply referred to as “holder part 101”.

  As shown in FIGS. 4 and 5, the holder portion 101 includes a locking hole 20 formed in the covering portion 4 of the bus bar unit 2, a facing portion 21 provided facing the locking hole 20, and the electrolytic capacitor 5. , 6 recesses 5B, 6B and the locking hole 22 locked over the locking hole 20.

  The locking hole 20 is formed between the adjacent electrolytic capacitors 5 and 6 in the horizontal direction at a position where the axial position substantially coincides with the recessed portions 5B and 6B of the electrolytic capacitors 5 and 6. That is, the locking hole 20 is provided so as to face the recessed portions 5B and 6B of the adjacent electrolytic capacitors 5 and 6, respectively. The locking hole 20 does not need to be provided at a position where the axial positions of the recessed portions 5B and 6B of the electrolytic capacitors 5 and 6 substantially coincide with each other. Can be provided in position. The locking hole 20 is not limited to a round hole having a circular cross section, and may be a hole having a polygonal cross section or a slit.

  The facing portion 21 is integrally formed of a resin material together with the covering portion 4 of the bus bar unit 2. The facing portion 21 is the surface 2A of the bus bar unit 2 like the electrolytic capacitors 5 and 6, and is provided between the adjacent electrolytic capacitors 5 and 6. As shown in FIG. 5, the opposing portion 21 is formed in a substantially U shape whose both ends are connected to the covering portion 4 on both sides in the axial direction across the locking hole 20, and whose central portion faces the locking hole 20. The As shown in FIG. 4, the facing portion 21 is provided such that the center portion is vertically above the central axis of the electrolytic capacitors 5 and 6. By forming the facing portion 21 integrally with the covering portion 4, the manufacturing process can be shortened and can be manufactured at low cost. However, it is not limited to integral formation, but may be formed as a separate body and attached to the covering portion 4. In addition, in FIG. 5, illustration of the latching | locking part 22 is abbreviate | omitted.

  The locking portion 22 is formed of a thermoplastic material (eg, hot melt resin such as polyamide or polypropylene) that has fluidity and is cured by a temperature decrease with time. As shown in FIG. 4, the locking portion 22 is locked to the locking hole 20 and the opposed portion 21 and is filled in a part of the recessed portions 5 </ b> B and 6 </ b> B of the electrolytic capacitors 5 and 6. The locking portion 22 is filled in and engaged with the recess portions 5B and 6B, thereby holding the electrolytic capacitors 5 and 6 and restricting movement in the axial direction.

  The locking portion 22 is provided so as to cover the outer peripheral surfaces 5A and 6A of the electrolytic capacitors 5 and 6 so as to straddle the central axis of the electrolytic capacitors 5 and 6 in the vertical direction. In other words, the outer peripheral surfaces 5A and 6A of the electrolytic capacitors 5 and 6 are formed so as to cover from the bus bar unit 2 to a position away from the central axis of the electrolytic capacitors 5 and 6 in the vertical direction. Therefore, the locking portion 22 includes the narrow portion L where the horizontal interval between the adjacent electrolytic capacitors 5 and 6 is the smallest, and is provided over the vertical direction of the narrow portion L. Thereby, the latching | locking part 22 controls the movement of the vertical direction of the electrolytic capacitors 5 and 6 and a horizontal direction. Therefore, the electrolytic capacitors 5 and 6 are held by the locking portion 22 and fixed to the bus bar unit 2.

  Next, a method for manufacturing the electronic control device 100 will be described. In the following description, the description of the second holder portion 102 that holds the electrolytic capacitors 6 and 7 will be omitted as appropriate.

  First, the electrolytic capacitors 5 and 6 are disposed on the support portion 4A from the surface 2A of the covering portion 4 in the bus bar unit 2.

  Next, a thermoplastic material is applied toward the electrolytic capacitors 5 and 6 through the locking holes 20 to form the locking portions 22. Specifically, first, the bus bar unit 2 is inverted so that the vertical direction is reversed, and the facing portion 21 is positioned below the locking hole 20 in the vertical direction. That is, the back surface 2B of the bus bar unit 2 is in a state in which it is directed upward in the vertical direction (the state shown in FIG. 2), and the thermoplastic material is injected from the locking hole 20 in this state. In this way, the thermoplastic material is injected from the back surface 2 </ b> B of the bus bar unit 2 through the locking hole 20.

  The thermoplastic material injected through the locking hole 20 is prevented from falling downward by the facing portion 21 and flows into the recessed portions 5B and 6B of the electrolytic capacitors 5 and 6. Since the facing portion 21 serves as a stopper for the thermoplastic material injected through the locking hole 20, the injected thermoplastic material is easily applied to the outer peripheral surfaces 5A, 6A, and 7A of the electrolytic capacitors 5, 6, and 7. Therefore, the depressions 5B and 6B are filled with the thermoplastic material. In addition to this, the thermoplastic material is filled to fill the locking holes 20. The thermoplastic material applied to the electrolytic capacitor 5 is hardened with a decrease in fluidity as the temperature decreases with time. As a result, as shown in FIG. 4, a locking portion 22 that is locked across the recess portions 5 </ b> B and 6 </ b> B of the electrolytic capacitors 5 and 6 and the locking hole 20 is formed.

  Next, the second electronic component 11 such as a coil is disposed on the back surface 2 </ b> B of the bus bar unit 2. Further, the same thermoplastic material as the thermoplastic material on which the locking portion 22 is formed is applied from the back surface 2 </ b> B of the bus bar unit 2, and the second electronic component 11 is locked to the bus bar unit 2. In the manufacture of the electronic control unit 100, the same thermoplastic material is applied to the bus bar unit 2 from the back surface 2B, that is, from the same surface (in the same direction) as indicated by an arrow in FIG. Formation and fixing of the second electronic component 11 are performed. Therefore, in the manufacture of the electronic control unit 100, the number of times the bus bar unit 2 is turned upside down is reduced, so that the working time can be shortened and the manufacturing cost can be reduced. Note that the step of forming the locking portion 22 to lock the electrolytic capacitor 5 to the bus bar unit 2 and the step of locking the second electronic component 11 to the bus bar unit 2 are performed in any order. You may go first.

  Next, the bus bar unit 2 is inverted again and attached to the power supply substrate 1. Further, the control board is lowered from above with respect to the assembly of the power supply board 1 and the bus bar unit 2, and the control board is assembled.

  Next, the assembly of the power supply substrate 1, the bus bar unit 2, and the control substrate is attached to the inside of the housing (not shown), and the assembly of the electronic control device 100 is completed.

  Here, generally, when the outer peripheral surfaces 5A, 6A, and 7A of the electrolytic capacitors 5, 6, and 7 have poor adhesion, the main body portions of the electrolytic capacitors 5, 6, and 7 are fixed to the bus bar unit 2 with an adhesive. It is difficult. In this case, in order to fix the electrolytic capacitors 5, 6 and 7, it is conceivable to fix the pair of leads 8 to the bus bar unit 2 with an adhesive.

  However, in the method of fixing the lead 8 with an adhesive, if vibration or the like acts, the electrolytic capacitors 5, 6, and 7 may vibrate using the fixed lead 8 as a fulcrum. In particular, when the electronic control device 100 is mounted on a vehicle that is susceptible to vibration, such as when the control target is an engine or an electric power steering device, there is a risk of vibration of the electrolytic capacitors 5, 6, and 7. Becomes larger. Such vibration of the electrolytic capacitors 5, 6, and 7 may cause the lead 8 to bend and reduce the durability of the lead 8.

  In contrast, in the present embodiment, the outer peripheral surfaces 5A, 6A, and 7A of the electrolytic capacitors 5, 6, and 7 are mechanically fixed to the bus bar unit 2 by the locking portion 22. For this reason, even if the outer peripheral surfaces 5A, 6A, and 7A of the electrolytic capacitors 5, 6, and 7 have poor adhesiveness and are difficult to fix with an adhesive, the electrolytic capacitor 5 is more reliably fixed. be able to.

  Next, a modification of this embodiment will be described.

  In the above embodiment, the locking portion 22 is filled in the recessed portions 5B and 6B of the electrolytic capacitors 5 and 6, and is formed over the vertical direction so as to straddle the central axis in the vertical direction. On the other hand, the latching | locking part 22 is provided in the position spaced apart from the hollow parts 5B and 6B in the axial direction, and does not need to be filled with the hollow parts 5B and 6B. Even in this case, the electrolytic capacitors 5 and 6 can be held in the horizontal direction and the vertical direction by forming the locking portion 22 across the central axis in the vertical direction.

  Moreover, the latching | locking part 22 may be formed only in the perpendicular | vertical downward direction from the center axis | shaft while it fills the hollow parts 5B and 6B. Even in this case, the movement of the electrolytic capacitors 5 and 6 in the axial direction can be restricted. In such a case, for example, another locking portion 22 that holds the electrolytic capacitors 5 and 6 in the horizontal direction and the vertical direction may be formed, or the electrolytic capacitors 5 and 6 may be horizontally held by other holding means. And may be held vertically.

  Moreover, in the said embodiment, the electronic control apparatus 100 has the 1st, 2nd holder part 101,102 provided respectively between the horizontal directions of the adjacent electrolytic capacitor 5,6,7. On the other hand, the electronic control unit 100 may provide the locking holes 20 between the electrolytic capacitors 5 and 7 at both ends in the horizontal direction and the wall portion of the covering portion 4 adjacent thereto. In particular, in addition to the first and second holder portions 101 and 102, by providing a holder portion between each of the electrolytic capacitors 5 and 7 and the wall portion of the covering portion 4, the electrolytic capacitors 5, 6, and 7 can be horizontally disposed. It can be reliably held depending on the direction.

  According to the above embodiment, there exist the following effects.

  Since the outer peripheral surfaces 5A, 6A, 7A of the electrolytic capacitors 5, 6, 7 and the bus bar unit 2 are locked by the locking portion 22, the adhesion of the outer peripheral surfaces 5A, 6A, 7A of the electrolytic capacitors 5, 6, 7 Regardless of the case, the electrolytic capacitors 5, 6, 7 can be fixed to the bus bar unit 2.

  Moreover, since the latching | locking part 22 is filled in the hollow parts 5B, 6B, and 7B of the electrolytic capacitors 5, 6, and 7 and is formed over the vertical direction of the narrow part L between the electrolytic capacitors 5, 6, and 7, The electrolytic capacitors 5, 6, and 7 can be held in the axial direction and also in the vertical and horizontal directions.

  Further, in the step of forming the locking portion 22, the locking portion 22 is formed by applying a thermoplastic material through the locking hole 20 from the back surface 2B where the second electronic component 11 is provided. The electrolytic capacitors 5, 6, 7 can be locked and the second electronic component 11 can be locked without reversing. Therefore, the manufacturing time of the electronic control apparatus 100 can be shortened and the manufacturing cost can be reduced.

  Hereinafter, the configuration, operation, and effect of the embodiment of the present invention will be described together.

  The electronic control device 100 provided with the cylindrical electrolytic capacitors 5, 6 and 7 includes the bus bar unit 2 in which the locking holes 20 are formed, and the outer peripheral surfaces 5A and 6A of the locking holes 20 and the electrolytic capacitors 5, 6 and 7. , 7A, and a latching portion 22 that holds the electrolytic capacitors 5, 6, 7 on the bus bar unit 2.

  In this configuration, since the outer peripheral surfaces 5A, 6A, 7A of the electrolytic capacitors 5, 6, 7 and the bus bar unit 2 are locked by the locking portion 22, the outer peripheral surfaces 5A, 6A, The electrolytic capacitors 5, 6, and 7 can be fixed to the bus bar unit 2 regardless of the adhesiveness of 7A. Therefore, the electrolytic capacitors 5, 6, and 7 mounted on the bus bar unit 2 are more reliably fixed.

  Further, in the electronic control device 100, the electrolytic capacitor 5, 6, 6 is located at a position where the locking portion 22 is perpendicular to the surface 1 </ b> A, which is the mounting surface of the bus bar unit 2, from the central axis of the electrolytic capacitor 5, 6, 7. 7 is locked to the outer peripheral surfaces 5A, 6A, and 7A.

  In this configuration, the movement of the electrolytic capacitors 5, 6, 7 in the vertical direction is restricted by the locking portion 22.

  Further, in the electronic control device 100, the locking portion 22 engages with the recessed portions 5B, 6B, and 7B formed on the outer peripheral surfaces 5A, 6A, and 7A of the electrolytic capacitors 5, 6, and 7.

  In this configuration, the movement of the electrolytic capacitors 5, 6, 7 in the central axis direction is restricted by the locking portion 22.

  The electronic control device 100 further includes a facing portion 21 provided on the same surface as the surface 2A on which the electrolytic capacitors 5, 6 and 7 of the bus bar unit 2 are mounted, and facing the locking hole 20, and the locking portion 22 includes The electrolytic capacitor 5, 6 and 7 are retained by being engaged with the locking hole 20, the outer peripheral surfaces 5A, 6A and 7A of the electrolytic capacitors 5, 6 and 7 and the opposing portions.

  In this configuration, since the facing portion 21 serves as a stopper for the thermoplastic material injected through the locking hole 20, the injected thermoplastic material is applied to the outer peripheral surfaces 5A, 6A, and 7A of the electrolytic capacitors 5, 6, and 7. It becomes easy to be done. Therefore, the latching | locking part 22 can be formed easily.

  In the electronic control device 100, the bus bar unit 2 includes a terminal 3 to which the electrolytic capacitors 5, 6 and 7 are electrically connected, and a covering portion 4 formed by a resin material molded on the terminal 3. The facing portion 21 is integrally formed with the covering portion 4 by a resin material.

  According to this configuration, since the manufacturing process is reduced, the facing portion 21 can be formed at a low cost.

  Moreover, in the electronic control apparatus 100, the latching | locking part 22 is a thermoplastic material which has fluidity | liquidity and hardens | cures with the temperature fall with time passage.

  In this configuration, since the same thermoplastic material can be used for fixing the second electronic component 11 to the bus bar unit 2 and forming the locking portion 22, the manufacturing cost of the electronic control device 100 is reduced.

  The manufacturing method of the electronic control device 100 in which the cylindrical electrolytic capacitors 5, 6, 7 and the second electronic component 11 different from the electrolytic capacitors 5, 6, 7 are provided is the electrolytic capacitor 5 on the surface 2 A of the bus bar unit 2. , 6, 7, the step of disposing the second electronic component 11 on the back surface 2 B of the bus bar unit 2, and applying a thermoplastic material that has fluidity and hardens over time to the bus bar unit 2. A step of locking the electrolytic capacitors 5, 6 and 7 and a step of locking the second electronic component 11 to the bus bar unit 2 by applying a thermoplastic material, and locking the electrolytic capacitors 5, 6 and 7 In this process, a thermoplastic material is applied from the back surface 2B of the bus bar unit 2 through the locking holes 20 formed in the bus bar unit 2, and the electrolytic capacitors 5, 6, 7 are engaged with the bus bar unit 2. And, in the step of locking the second electronic component 11, locking the second electronic component 11 by applying the thermoplastic material from the back surface 2B of the bus bar unit 2 to the bus bar unit 2.

  In this configuration, the electrolytic capacitors 5, 6, and 7 are locked to the bus bar unit 2 and the second electronic component 11 is locked by applying a thermoplastic material from the back surface 2 </ b> B of the bus bar unit 2. Thus, since the thermoplastic material is applied from the same direction, the manufacturing time of the electronic control device 100 can be shortened and the manufacturing cost can be reduced.

  The embodiment of the present invention has been described above. However, the above embodiment only shows a part of application examples of the present invention, and the technical scope of the present invention is limited to the specific configuration of the above embodiment. Absent.

  DESCRIPTION OF SYMBOLS 1 ... Power supply board (electronic substrate), 1A ... Mounting surface, 2 ... Busbar unit (base member), 2A ... Front surface (mounting surface), 2B ... Back surface, 3 ... Terminal, 4 ... Covering part, 5, 6, 7 ... Electrolytic capacitor (first electronic component), 5A, 6A, 7A ... outer peripheral surface, 5B, 6B, 7B ... hollow portion, 10 ... holder portion, 11 ... second electronic component, 20 ... locking hole, 21 ... facing portion , 22 ... locking part, 100 ... electronic control device (electronic equipment)

Claims (5)

An electronic device provided with a cylindrical electronic component,
A base member in which a locking hole is formed;
A locking portion that is locked across the locking hole and the outer peripheral surface of the electronic component and holds the electronic component on the base member ,
The base member has a facing portion that is provided on the same surface as the mounting surface of the base member that holds the electronic component and faces the locking hole,
The locking portion is a thermoplastic material that is locked over the locking hole, the outer peripheral surface of the electronic component, and the opposing portion to hold the electronic component and has fluidity and is cured with time. electronic apparatus, characterized in that.   The said latching | locking part is latched by the outer peripheral surface of the said electronic component in the position away from the mounting surface of the said base member in the orthogonal | vertical direction rather than the center axis | shaft of the said electronic component. Electronics.   The electronic device according to claim 1, wherein the locking portion engages with a recess formed on an outer peripheral surface of the electronic component. The base member has a terminal to which the electronic component is electrically connected, and a covering portion formed by a resin material molded on the terminal,
The electronic device according to claim 1 , wherein the facing portion is integrally formed with the covering portion by the resin material .   A method of manufacturing an electronic device in which a cylindrical first electronic component and a second electronic component different from the first electronic component are provided,
  Placing the first electronic component on one side of the front and back of the base member;
  Placing the second electronic component on the other side of the front and back of the base member;
  Applying a thermoplastic material that has fluidity and hardens over time and locks the first electronic component to the base member;
  Applying the thermoplastic material and locking the second electronic component to the base member,
  In the step of locking the first electronic component, the thermoplastic material is applied from the other surface of the base member through a locking hole formed in the base member, and the first electronic component is engaged with the base member. Stop,
  In the step of locking the second electronic component, the thermoplastic material is applied from the other surface of the base member to lock the second electronic component to the base member,
  The step of locking the first electronic component and the step of locking the second electronic component are performed in separate steps, respectively.