Electronic component unit

Abstract

To provide an electronic component unit that offers excellent productivity and proper insulation between terminals and contacts. [Solution] The electronic component unit 1 comprises a base member 2 having an electronic component 10, a housing 20 in which the electronic component 10 is embedded and housed, and a pair of terminals 30 connected to the electronic component 10 and exposed to the outside of the housing 20; a housing 3 assembled to the base member 2 and having a pair of housing chambers 81 that house the pair of terminals 30 while isolating them from each other; and a pair of electric wires 6 connected to each of the pair of terminals 30 inside each of the pair of housing chambers 81 and inserted inside and outside each of the pair of housing chambers 81.

Description

Technical Field

[0001] The present invention relates to an electronic component unit including a base member incorporating an electronic component, a housing having a pair of accommodation chambers for accommodating a pair of terminals exposed outside the base member while isolating them from each other, and a pair of electric wires connected to each of the pair of terminals and inserted through the inside and outside of each of the pair of accommodation chambers.

Background Art

[0002] Conventionally, an electronic component unit incorporating an electronic component, such as a temperature sensor incorporating a temperature measuring element such as a thermistor, has been proposed. For example, one of the conventional electronic component units embeds a thermistor, a terminal wire extending from the thermistor, and all of the contacts between the terminal wire and an external electric wire in a resin sealing material, thereby fixing the positions of these components, waterproofing these components, and insulating between the contacts (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in an electronic component unit used in an environment where the possibility of being wetted is sufficiently low, waterproofing treatment such as embedding each component and contact in a sealing body as in the above-described conventional electronic component unit is not required. However, even in such an electronic component unit, generally, fixing each component and insulating between contacts are required. Against this background, there is a demand for an electronic component unit that realizes fixing each component and insulating between contacts while reducing production costs by not using a sealing body.

[0005] One of the objectives of the present invention is to provide an electronic component unit that is cost-effective to produce and allows for the fixing of each component and insulation between contacts. [Means for solving the problem]

[0006] To achieve the aforementioned objectives, the electronic component unit according to the present invention has the following features:

[0007] A base member having an electronic component, a housing in which the electronic component is embedded and housed, and a pair of terminals connected to the electronic component and exposed to the outside of the housing, A housing, which is assembled to the base member and has a pair of housing chambers that house the pair of terminals while isolating them from each other, A pair of electric wires are provided, each connected to each of the pair of terminals inside each of the pair of housing chambers, and inserted into and out of each of the pair of housing chambers while being held by the housing. It must be an electronic component unit. [Effects of the Invention]

[0008] According to the electronic component unit of the present invention, each of a pair of terminals connected to an electronic component embedded in a housing of a base member and exposed from the housing is housed in each of a pair of housing chambers of the housing. The pair of housing chambers house the pair of terminals while isolating them from each other. Furthermore, a pair of electric wires are connected to the pair of terminals and are inserted into and out of the pair of housing chambers while being held by the housing. As a result, the electronic component and terminals are fixed to the housing, the electric wires are held by the housing, and each contact point between the terminals and electric wires is isolated and housed in each housing chamber, without the need for sealing material as in conventional electronic component units. Moreover, compared to cases where sealing material is used, the electronic component unit can be constructed by assembling the base member, housing, and electric wires, so there is no need for sealing material injection equipment or the like in production facilities.Therefore, the electronic component unit of the present invention is superior in terms of production cost and enables the fixing of each component and insulation between contacts.

[0009] The present invention has been briefly described above. Further details of the present invention will be clarified by referring to the accompanying drawings and reading through the embodiments for carrying out the invention described below. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is a perspective view showing an electronic component unit according to an embodiment of the present invention. [Figure 2] Figure 2 is an exploded perspective view of the electronic component unit shown in Figure 1. [Figure 3] Figure 3 is a side view of the base member shown in Figure 2. [Figure 4] Figure 4 is a cross-sectional view of AA in Figure 3. [Figure 5] Figure 5 is a side view showing the base member with the case assembled and the lead wires held in the case. [Figure 6] Figure 6 is a view from above of the base member, case, and lead wires shown in Figure 5. [Figure 7] Figure 7 is a perspective view of the cover shown in Figure 2, viewed from below. [Figure 8] Figure 8 is a side view of the electronic component unit shown in Figure 1. [Figure 9] Figure 9 is an enlarged view of section B in Figure 8. [Figure 10] Figure 10 is a cross-sectional view of the CC shown in Figure 8. [Figure 11] Figure 11 is an enlarged view of section E in Figure 10. [Figure 12] Figure 12 is a cross-sectional view of Figure 8. [Figure 13] Figure 13 is a cross-sectional view of the FF in Figure 12. [Figure 14] Figure 14 is a perspective view showing an electronic component unit according to a modified example. [Modes for carrying out the invention]

[0011] <Embodiment> Hereinafter, the electronic component unit 1 according to an embodiment of the present invention will be described with reference to the drawings. The electronic component unit 1 shown in FIG. 1 is used as a temperature sensor, for example, in a state where a base member 2 described later is inserted into and fixed to a mounting hole (not shown) of the mounting target. The mounting target is, for example, the wall of a container that stores vehicle transmission oil, engine oil, or the like. In this case, the electronic component unit 1 attached to the mounting target functions to measure the temperature of the oil in the container. As shown in FIG. 2, the electronic component unit 1 includes a base member 2, a case 4 assembled to the base member 2, and a cover 5 assembled to the case 4. The case 4 and the cover 5 constitute a housing 3.

[0012] Hereinafter, for convenience of explanation, as shown in FIG. 1 and the like, "front", "rear", "left", "right", "upper", and "lower" are defined. The "front-rear direction", "left-right direction", and "upper-lower direction" are orthogonal to each other. The upper-lower direction corresponds to the "cylindrical axis direction" of the present invention. The front-rear direction, left-right direction, and upper-lower direction do not necessarily have to coincide with the front-rear direction, left-right direction, and upper-lower direction of a vehicle or the like on which the electronic component unit 1 is mounted. Hereinafter, each component constituting the electronic component unit 1 will be described in order.

[0013] First, the base member 2 will be described. As shown in FIGS. 2 to 4 and FIG. 10 and the like, the base member 2 has an electronic component 10 (see FIG. 4), a housing 20 in which the electronic component 10 is embedded and housed, and a pair of terminals 30 that are connected to the electronic component 10 and exposed outside the housing 20. Specifically, the electronic component 10 is a thermistor element. The electronic component 10 and the pair of terminals 30 are integrated with the resin housing 20 by transfer molding or the like so as to be stored (embedded) inside the housing 20.

[0014] As shown in FIGS. 2 and 3 etc., the container 20 which is a resin molded body integrally has a columnar main body portion 21 extending in the vertical direction, a protruding portion 22 protruding downward from the lower surface of the main body portion 21, and a protruding portion 23 protruding upward from the upper surface of the main body portion 21. An annular groove 24 is formed on the outer peripheral surface of the main body portion 21, and an O-ring 40 made of rubber is attached to the annular groove 24. The O-ring 40 attached to the annular groove 24 will closely contact the inner peripheral wall of the mounting hole of the above-mentioned mounting target and exert a sealing function. As can be understood from FIG. 4, the protruding portion 22 has a long hole shape that is long in the left-right direction and protrudes downward from the main body portion 21, and the entire electronic component 10 is embedded in the protruding portion 22. As shown in FIGS. 2 and 3 etc., the protruding portion 23 has a first portion 25 protruding upward from the upper surface of the main body portion 21 and extending in the left-right direction, and a pair of second portions 26 protruding from both sides in the front-rear direction from the entire left-right direction of the upper end portion of the first portion 25, and has a substantially T-shaped shape when viewed from the left-right direction. A groove portion 27 penetrating in the front-rear direction is formed at the center in the left-right direction on the upper surface of the protruding portion 23.

[0015] As can be understood from FIGS. 4 and 10 etc., each of the pair of terminals 30 has a shape extending substantially linearly in the vertical direction, and is arranged to be spaced apart in the left-right direction. The entire vertically extending portion located below the exposed portion 31 which is the upper region is embedded across the protruding portion 23, the main body portion 21 and the protruding portion 22 of the container 20. The lower end portions of the pair of terminals 30 located in the protruding portion 22 are connected to the electronic component 10 (see FIG. 4). The exposed portions 31 of the pair of terminals 30 protrude upward from the positions on both the left and right sides of the groove portion 27 on the upper end surface of the protruding portion 23, and are exposed outside the container 20. As shown in FIG. 2 etc., one end portion of the lead wire 6 is connected to each of the exposed portions 31 of the pair of terminals 30 by welding, and the pair of lead wires 6 each extend upward from the exposed portions 31 of the pair of terminals 30. Each of the pair of lead wires 6 has flexibility that can be arbitrarily bent.

[0016] Next, Case 4 will be described. Case 4 is a component that is assembled to the base member 2. Case 4 is a resin molded body and, as shown in Figures 2, 5 and 13, integrally comprises a roughly rectangular box-shaped main body 51 with an open top, an elongated portion 52 that protrudes downward from the center of the bottom wall of the main body 51 in the front-to-back direction and extends in the left-to-right direction, and a cylindrical portion 53 that is continuous with the lower part of the elongated portion 52 and extends in the vertical direction. The outer diameter of the cylindrical portion 53 is approximately the same as the outer diameter of the main body 21 of the housing 20 (see Figures 1, 5 and 8, etc.).

[0017] In case 4, a slit portion 54 is formed that extends from the center in the front-to-back direction of the elongated portion 52 and the cylindrical portion 53, over the entire vertical area, and from the right end to the vicinity of the left end of the elongated portion 52 and the cylindrical portion 53 (see Figures 2, 5, 12, and 13). The slit portion 54 opens to the right at the right end of the elongated portion 52 and the cylindrical portion 53, opens upward at the top surface of the elongated portion 52 (i.e., the bottom surface of the main body portion 51), and opens downward at the bottom surface of the cylindrical portion 53. Furthermore, in case 4, a slit portion 55 is formed that extends from the main body portion 51 to the vertical direction of the elongated portion 52 at the center in the front-to-back direction of the roughly rectangular flat right side wall of the main body portion 51 and the right end of the elongated portion 52 (see Figures 2 and 5). The slit portion 55 is open on the upper surface of the right side wall of the main body portion 51, the lower surface of the elongated portion 52, and on the inner and outer surfaces (left and right end faces) of the right side wall of the main body portion 51. The lower end of the slit portion 55 overlaps with the right end of the slit portion 54. Because the slit portion 54 and the slit portion 55 are formed in the case 4, the case 4 has a shape that is easily deformed so that the slit portion 54 and the slit portion 55 expand. When the case 4 is assembled to the base member 2, the first portion 25 of the projection 23 of the base member 2 and the exposed portion 31 of the pair of terminals 30 are housed in the slit portion 54 (see Figure 13, etc.), and the exposed portion 31 of the pair of terminals 30 and the pair of lead wires 6 pass through the slit portion 55 (see Figure 13, etc.). When the cover 5 is assembled to the case 4, the extension portion 72 of the cover 5, which will be described later, is housed in the slit portion 55 (see Figure 8).

[0018] On the inner walls of the slit portion 54 located in the cylindrical portion 53, a pair of front and rear grooves 56 are formed, which are recessed outward in the front-rear direction and extend in the left-right direction, corresponding to the pair of front and rear second portions 26 of the projection 23 of the base member 2 (see Figures 2, 5, and 13). When the case 4 is assembled to the base member 2, the pair of front and rear grooves 56 accommodate the pair of front and rear second portions 26 of the projection 23 of the base member 2.

[0019] On the inner walls of the slit portion 54 located in the elongated portion 52, a pair of front and rear projections 57 are provided at the right end of the slit portion 54 (i.e., the lower end of the slit portion 55) that project inward into the slit portion 54. A pair of front and rear projections 58 are provided at the position where the exposed portion 31 of the right terminal 30 is positioned when the case 4 is assembled to the base member 2, and a pair of front and rear projections 59 are provided at the position where the exposed portion 31 of the left terminal 30 is positioned when the case 4 is assembled to the base member 2, that project inward into the slit portion 54 (see Figures 2, 5, and 6, etc.).

[0020] On the inner walls of the slit portion 55 formed on the right side wall of the main body portion 51, a pair of front and rear grooves 61 are formed, which are recessed outward in the front-rear direction and extend vertically from the upper end of the right side wall to an intermediate position in the vertical direction. When the cover 5 is assembled to the case 4, the pair of front and rear grooves 61 will accommodate the pair of front and rear protrusions 73 of the cover 5, which will be described later.

[0021] On the upper edge of the roughly rectangular, flat rear side wall of the main body 51, which extends in the left-right direction, a pair of downwardly recessed recesses 62 are formed, corresponding to a pair of left and right lead wires 6 extending from the exposed portions 31 of a pair of left and right terminals 30. When the case 4 is assembled to the base member 2, the pair of left and right lead wires 6 are inserted through the pair of left and right recesses 62 (see Figures 1 and 6, etc.). The width (distance in the left-right direction) of each of the left and right recesses 62 is slightly smaller than the outer diameter of the lead wire 6. As a result, the lead wire 6 is press-fitted into the recesses 62.

[0022] The front and rear side walls of the main body 51, which are roughly rectangular and flat, each have upper edges extending in the left-right direction that are inclined surfaces (planes) 63 that are inclined outward in the front-rear direction (see Figures 2 and 5, etc.). When the cover 5 is assembled to the case 4, the front and rear pair of inclined surfaces 63 come into surface contact with the front and rear pair of inclined surfaces 77 of the cover 5, which will be described later (see Figures 5 and 9). A locking projection 64 is formed on the outer surface of the left side wall of the main body 51, which is roughly rectangular and flat (see Figures 6 and 10). When the cover 5 is assembled to the case 4, the edges of the locking holes of the locking frame portion 76 of the cover, which will be described later, engage with the locking projection 64 (see Figure 10).

[0023] Next, the cover 5 will be described. The cover 5 is a component that is assembled to the case 4, which is assembled to the base member 2. The cover 5 is a resin molded body and, as shown in Figures 2 and 7, etc., has a top plate portion 71 that has a rectangular flat shape corresponding to the shape of the upper end opening of the case 4 (main body portion 51). At the center of the front-to-back direction of the right edge of the top plate portion 71 that extends in the front-to-back direction, a substantially elongated flat extension portion 72 is provided that extends downward, corresponding to the slit portion 55 of the case 4. On the front and rear sides of the extension portion 72, a pair of front and rear projections 73 are provided that protrude outward in the front-to-back direction and extend in the vertical direction. At the center of the top plate portion 71 in the left-to-right direction and the center in the front-to-back direction, a substantially elongated flat extension portion 74 is provided that extends downward. When the cover 5 is assembled to the case 4, the tip (lower end) 74a of the extension 74 enters the groove 27 of the projection 23 of the base member 2 and comes into contact with the bottom wall of the groove 27 (see Figures 10 and 11).

[0024] On the rear edge of the top plate portion 71, which extends in the left-right direction, a pair of left and right projections 75 are formed to protrude downward, corresponding to a pair of left and right recesses 62 of the case 4 (see Figures 7 and 13). On the left edge of the top plate portion 71, a locking frame portion 76 with a locking hole is provided, extending downward, corresponding to a locking projection 64 of the case 4. On the front and rear edges of the lower surface of the top plate portion 71, which extend in the left-right direction, an inclined surface (plane) 77 is formed, which is inclined inward in the front-rear direction, corresponding to a pair of front and rear inclined surfaces 63 of the case 4 (see Figures 2 and 5, etc.). The components constituting the electronic component unit 1 have been described above.

[0025] Next, the assembly procedure for the electronic component unit 1 will be described. To assemble the electronic component unit 1, first, the case 4 is assembled to the base member 2 from the left side. Specifically, starting with the case 4 positioned on the left side of the base member 2 (see Figure 2), the case 4 is assembled to the base member 2 such that the exposed portions 31 of the pair of terminals 30 and the pair of lead wires 6 pass through the slit portion 55, the first portion 25 of the projection 23 and the exposed portions 31 of the pair of terminals 30 are housed in the slit portion 54, and the front and rear pair of second portions 26 of the projection 23 are housed in the front and rear pair of grooves 56 (see Figures 5 and 13, etc.).

[0026] When case 4 is assembled to base member 2, the pair of front and rear second portions 26 of the projection 23 of base member 2 and the pair of front and rear grooves 56 of case 4 engage, preventing case 4 from falling upward from base member 2. The slit portion 54 of case 4 is closed by the first portion 25 of the projection 23 housed in the slit portion 54. The exposed portions 31 of the pair of terminals 30 of base member 2 are surrounded by the side walls of the main body portion 51 of case 4 (see Figure 13, etc.). The right exposed portion 31 is located between the pair of front and rear projections 58, and the left exposed portion 31 is located between the pair of front and rear projections 59 (see Figure 6). The pair of lead wires 6 extending upward from the exposed portions 31 of the pair of terminals 30 are bent backward at their bases. One end of each of the pair of lead wires 6, which extend in the front-rear direction from the bent point toward the rear, is press-fitted into a pair of recesses 62 in the case 4 (see Figures 6 and 13, etc.).

[0027] Next, the cover 5 is assembled onto the case 4 from above. Specifically, starting with the cover 5 positioned on top of the case 4 (see Figure 2), the top plate portion 71 closes the upper end opening of the main body portion 51, the extension portion 72 is housed in the slit portion 55 (see Figure 8), both front-to-back ends of the tip portion (lower end) of the extension portion 72 are held in the left-to-right direction by a pair of front-to-back projections 57 and a pair of front-to-back projections 58, the pair of front-to-back projections 73 are housed in a pair of front-to-back grooves 61, and the extension portion 74 is positioned between the exposed portions 31 of the left-to-right pair of terminals 30. The cover 5 is assembled to the case 4 so that it enters and isolates the pair of exposed portions 31 on the left and right sides in the left-right direction (see Figure 10), so that both front-rear ends of the tip (lower end) of the extension 74 are sandwiched in the left-right direction by the pair of front-rear projections 58 and the pair of front-rear projections 59, so that the tip (lower end) 74a of the extension 74 enters into the groove 27 of the projection 23 of the base member 2 and contacts the bottom wall of the groove 27 (see Figure 11), and so that the edge of the locking hole of the locking frame 76 engages with the locking projection 64. The assembly of the electronic component unit 1 is completed when the cover 5 is assembled to the case 4.

[0028] When the cover 5 is assembled to the case 4, the top plate portion 71 closes the upper end opening of the main body portion 51. The edge of the locking hole of the locking frame portion 76 engages with the locking projection 64 (see Figure 10), preventing the cover 5 from falling upward from the case 4. The tip of the extension portion 72 contacts (engages) with the right end surface 23a of the projection 23 of the base member 2 (see Figures 2 and 6) (see Figure 10). Furthermore, a pair of front and rear projections 73 are housed in a pair of front and rear grooves 61. These prevent the cover 5 from falling to the left from the case 4. The slit portion 55 of the case 4 is closed by the extension portion 72 housed in the slit portion 55. A pair of front and rear projections 57 of the case 4 overlap the extension portion 72 (see Figures 8 and 12), restricting the extension portion 72 from deforming away from the slit portion 55. The extension portion 74 divides the hollow portion of the main body portion 51 into two sections in the left-right direction, thereby defining a pair of left and right housing chambers 81 inside the main body portion 51 (see Figures 10 and 12). Each of the exposed portions 31 of the pair of terminals 30 is housed in each of the pair of housing chambers 81. As a result, the exposed portions 31 of the pair of terminals 30 are housed in isolation from each other. The tip (lower end) 74a of the extension portion 74 is pressed against and crushed against the bottom wall of the groove 27 of the projection 23 of the base member 2 (see Figure 11). As a result, the degree of insulation of the exposed portions 31 of the pair of terminals 30 is further improved. Each of the pair of lead wires 6 extending from the exposed portions 31 of the pair of terminals 30 extends outwards from each of the pair of housing chambers 81 toward the rear via the recess 62 to the outside of the electronic component unit 1. A pair of left and right protrusions 75 on the cover 5 press down from above on the lead wires 6 which are press-fitted into a pair of left and right recesses 62 on the case 4 (see Figure 13). As a result, even if an external force is applied to the lead wires 6 extending outward from the electronic component unit 1, that external force is prevented from reaching the contact point between the lead wires 6 and the terminals 30 (exposed portion 31). A pair of front and rear inclined surfaces 77 on the cover 5 are in surface contact with a pair of front and rear inclined surfaces 63 on the case 4. As a result, the engagement between the inclined surfaces 77 and 63 prevents the case 4 from deforming in such a way that the slit portions 54 and 55 widen.

[0029] A pair of lead wires 6 extending from the assembled electronic component unit 1 (see Figure 1) are electrically connected to a wire extending from a temperature detection device (not shown). As a result, the electrical signal output from the electronic component 10 (thermistor element) (a signal indicating the temperature around the thermistor element) is input to the temperature detection device, enabling the detection of the temperature around the thermistor element.

[0030] <Effects and Actions> As described above, according to the electronic component unit 1 of this embodiment, each of the pair of terminals 30 that are connected to the electronic component 10 embedded in the housing 20 of the base member 2 and exposed from the housing 20 is housed in each of the pair of housing chambers 81 of the housing 3. The pair of housing chambers 81 isolate the pair of terminals 30 from each other. Furthermore, a pair of electric wires (lead wires 6) are connected to the pair of terminals 30 and inserted into and out of each of the pair of housing chambers 81. As a result, one terminal 30 and the contact point between that terminal 30 and the electric wire 6, and the other terminal 30 and the contact point between that terminal 30 and the electric wire 6 are properly insulated without using a sealing material as in conventional electronic component units. Furthermore, since the above-mentioned insulation can be achieved by assembling the housing 3 to the base member 2, the productivity of the electronic component unit 1 can be improved compared to using a sealing material as in conventional electronic component units.Therefore, the electronic component unit 1 of this embodiment is highly productive and enables proper insulation between terminals and contact points.

[0031] Furthermore, according to the electronic component unit 1 of this embodiment, after pre-connecting the electric wire 6 to the terminal 30 exposed from the housing 20 of the base member 2, the first housing 4 can be assembled to the base member 2 while passing the terminal 30 and electric wire 6 through the slit portion 55 of the first housing (case 4). Furthermore, after assembling the first housing 4 to the base member 2 in this manner, the second housing 5 can be assembled to the first housing 4, closing the open end of the first housing 4 with the second housing 5 and closing the slit portion 55 of the first housing 4 with the extension portion 72 of the second housing 5. In addition, the engagement of the extension portion 72 with the base member 2 prevents the first housing 4 and the second housing 5 from unintentionally separating from the base member 2. As a result, the first housing 4 and the second housing 5 can be firmly assembled to the base member 2 without requiring complex assembly work.

[0032] Furthermore, according to the electronic component unit 1 of this embodiment, the first restricting portion (projection 57) of the first housing 4 overlaps with the extension portion 72, preventing the extension portion 72 from deforming so that it separates from the slit portion 55. This further strongly suppresses the unintentional separation of the first housing 4 and the second housing 5 from the base member 2.

[0033] Furthermore, according to the electronic component unit 1 of this embodiment, the second restricting portion (inclined surface 77) of the second housing 5 engages with the open end of the first housing 4, preventing the first housing 4 from deforming so that the slit portion 55 widens. As a result, the state in which the slit portion 55 of the first housing 4 is closed by the extension portion 72 of the second housing 5 is maintained. This firmly maintains the state in which the housing chamber 81 inside the first housing 4 is isolated from the outside.

[0034] Furthermore, according to the electronic component unit 1 of this embodiment, the electric wire 6 is press-fitted into the opening (recess 62) of the housing 3. As a result, even if an external force is applied to the electric wire 6 extending from the electronic component unit 1, the external force is prevented from being applied to the contact point between the electric wire 6 and the terminal 30. This improves the reliability of the electrical connection between the electric wire 6 and the terminal 30.

[0035] Furthermore, according to the electronic component unit 1 of this embodiment, the electric wire 6 and the terminal 30 are welded together. Compared to the case where the electric wire and terminal are connected by crimping a crimping piece provided on the terminal, even if the thickness of the electric wire 6 used in the electronic component unit 1 is different, there is no need to change the specifications such as changing the size of the crimping piece, so the electric wire 6 and the terminal 30 can be connected with a common welding operation. This further improves the productivity of the electronic component unit 1.

[0036] <Other embodiments> It should be noted that the present invention is not limited to the embodiments described above, and various modifications can be adopted within the scope of the present invention. For example, the present invention is not limited to the embodiments described above, and can be modified, improved, etc. as appropriate. Furthermore, the material, shape, dimensions, number, placement, etc. of each component in the embodiments described above are arbitrary and not limited as long as they can achieve the present invention.

[0037] For example, in the above embodiment, the contact point between the terminal 30 extending from the base member 2 and the lead wire 6, and the lead wire 6 extending from the terminal 30, are not embedded in a sealing material such as potting material inside the case 4 (main body 51) (see Figure 13). In contrast, in the modified example shown in Figure 14, a hole (through hole) 78 is formed in the top plate portion 71 of the cover 5. In this modified example, potting material can be poured into the inside of the case 4 (main body 51) through the hole 78 and solidified. As a result, the contact point between the terminal 30 extending from the base member 2 and the lead wire 6, and the lead wire 6 extending from the terminal 30, are embedded in a sealing material such as potting material inside the case 4 (main body 51), thereby providing even greater insulation between the terminals and the contact point.

[0038] Herein, the features of the embodiments of the electronic component unit 1 according to the present invention described above are briefly summarized and listed below in [1] to [7].

[0039] [1] A base member (2) having an electronic component (10), a housing (20) in which the electronic component (10) is embedded and housed, and a pair of terminals (30) connected to the electronic component (10) and exposed to the outside of the housing (20), A housing (3) is assembled to the base member (2) and has a pair of housing chambers (81) that house the pair of terminals (30) while isolating them from each other, The system comprises a pair of electric wires (6) connected to each of the pair of terminals (30) inside each of the pair of housing chambers (81), and held by the housing (3) while being inserted inside and outside each of the pair of housing chambers (81), Electronic component unit (1).

[0040] According to the electronic component unit described in [1] above, each of a pair of terminals connected to an electronic component embedded in the housing of the base member and exposed from the housing is housed in each of a pair of housing chambers of the housing. The pair of housing chambers house the pair of terminals while isolating them from each other. Furthermore, a pair of electric wires are connected to the pair of terminals and are inserted into and out of the pair of housing chambers while being held by the housing. As a result, the electronic component and terminals are fixed to the housing, the electric wires are held by the housing, and each contact point between the terminals and electric wires is isolated and housed in each housing chamber, without the need for sealing material as in conventional electronic component units. Moreover, compared to cases where sealing material is used, the electronic component unit can be constructed by assembling the base member, housing, and electric wires, so there is no need for sealing material injection equipment or the like in the production equipment.Therefore, the electronic component unit with this configuration is superior in terms of production cost and allows for the fixing of each component and insulation between contacts.

[0041] [2] In the electronic component unit (1) described in [1] above, The housing (3) is The first housing (4) has a cylindrical peripheral wall portion (51) surrounding the pair of terminals (30) extending from the base member (2), and a slit portion (55) in which a part of the peripheral wall portion (51) is cut out in the direction of the cylindrical axis, and one open end (53) of the peripheral wall portion (51) is assembled to the base member (2), The first housing (4) has a second housing (5) which is assembled to the first housing (4) so ​​as to close the other open end of the first housing (4), The aforementioned second housing (5) is It has an extension (72) that extends toward the base member (2), closes the slit portion (55), and engages with the base member (2), Electronic component unit (1).

[0042] According to the electronic component unit described in [2] above, after pre-connecting the wires to the terminals exposed from the housing of the base member, the first housing can be assembled to the base member while passing the terminals and wires through the slit portion of the first housing. Furthermore, after assembling the first housing to the base member in this manner, the second housing can be assembled to the first housing, closing the open end of the first housing with the second housing and closing the slit portion of the first housing with the extension portion of the second housing. In addition, the engagement of the extension portion with the base portion prevents the first and second housings from unintentionally separating from the base member. As a result, the first and second housings can be firmly assembled to the base member without requiring complex assembly work.

[0043] [3] In the electronic component unit (1) described in [2] above, The first housing (4) is, The device has a first restricting portion (57) that extends from the edge of the slit portion (55) so as to overlap with the extension portion (72) and restricts the deformation of the extension portion (72) so as to separate from the slit portion (55), Electronic component unit (1).

[0044] According to the electronic component unit described in [3] above, the first restricting portion of the first housing overlaps with the extension portion, preventing the extension portion from deforming so that it separates from the slit portion. This further strongly suppresses the unintentional separation of the first and second housings from the base member.

[0045] [4] In the electronic component unit (1) described in [2] above, The aforementioned second housing (5) is The first housing (4) has a second restricting portion (77) that engages with the other open end portion (63) of the first housing (4) and restricts the deformation of the first housing (4) so ​​that the slit portion (55) expands. Electronic component unit (1).

[0046] According to the electronic component unit described in [4] above, the second restricting portion of the second housing engages with the open end of the first housing, preventing the first housing from deforming so that the slit portion widens. This maintains the state in which the slit portion of the first housing is closed by the extension of the second housing. This firmly maintains the state in which the housing chamber inside the first housing is isolated from the outside.

[0047] [5] In the electronic component unit (1) described in [2] above, The aforementioned second housing (5) is The pair of accommodation chambers (81) are separated by an isolation wall (74), The aforementioned isolation wall (74) Pressing contact with the base member (2), Electronic component unit (1).

[0048] According to the electronic component unit described in [5] above, the isolation wall of the second housing is pressed against the base member, thereby more reliably isolating the pair of housing chambers.

[0049] [6] In the electronic component unit (1) described in [1] above, The housing (3) is Each of the pair of electric wires (6) has an opening (62) through which it is inserted into and out of the pair of housing chambers (81) while being pressed in and held. Electronic component unit (1).

[0050] According to the electronic component unit described in [6] above, the wire is press-fitted into the opening of the housing. This prevents external forces from being applied to the wire extending from the electronic component unit, thereby improving the reliability of the electrical connection between the wire and the terminal.

[0051] [7] In the electronic component unit (1) described in [1] above, Each of the pair of electric wires (6) is Each of the pair of terminals (30) is welded, Electronic component unit (1).

[0052] According to the electronic component unit described in [7] above, the wire and terminal are welded together. Compared to the case where a crimping piece provided on the terminal is used to connect the wire and terminal, this eliminates the need to change specifications such as changing the size of the crimping piece, even if the wire thickness used in the electronic component unit is different. As a result, the wire and terminal can be connected using a common welding process. This further reduces the production cost of the electronic component unit. [Explanation of Symbols]

[0053] 1 Electronic component unit 2 Base member 3 Housing 4 cases (first housing) 5. Cover (Second Housing) 6. Lead wires (electrical wires) 10 Electronic Components 20 containment units 30 terminals 51 Main body (peripheral wall) 53. Cylindrical section (one open end) 55 Slit section 57 Projection (1st regulation part) 62 Recess (opening) 72 Extension part 74 Extension (isolation wall) 77 Inclined surface (second regulation part) 81 Confinement Rooms

Claims

1. A base member having an electronic component, a housing in which the electronic component is embedded and housed, and a pair of terminals connected to the electronic component and exposed to the outside of the housing, A housing, which is assembled to the base member and has a pair of housing chambers that house the pair of terminals while isolating them from each other, A pair of electric wires are provided, each connected to each of the pair of terminals inside each of the pair of housing chambers, and inserted into and out of each of the pair of housing chambers while being held by the housing. Electronic component unit.

2. In the electronic component unit according to claim 1, The aforementioned housing is A first housing having a cylindrical peripheral wall portion surrounding the pair of terminals extending from the base member, and a slit portion in which a part of the peripheral wall portion is cut out in the direction of the cylindrical axis, with one open end of the peripheral wall portion being assembled to the base member, The present invention comprises a second housing which is assembled to the first housing so as to close the other open end of the first housing, The preceding 2 housing is, It has an extension that extends toward the base member, closes the slit portion, and engages with the base member, Electronic component unit.

3. In the electronic component unit according to claim 2, The first housing is, It has a first restricting portion that extends from the edge of the slit portion so as to overlap with the extension portion and restricts the extension portion from deforming so as to move away from the slit portion. Electronic component unit.

4. In the electronic component unit according to claim 2, The preceding 2 housing is, The first housing has a second restricting portion that engages with the other open end of the first housing and restricts the deformation of the first housing so that the slit portion widens. Electronic component unit.

5. In the electronic component unit according to claim 2, The preceding 2 housing is, Having an isolation wall that separates the pair of accommodation chambers, The aforementioned isolation wall is Pressing contact with the base member, Electronic component unit.

6. In the electronic component unit according to claim 1, The aforementioned housing is Each of the pair of electric wires has an opening through which it is inserted to the inside and outside of the pair of housing chambers while being pressed in and held in place. Electronic component unit.

7. In the electronic component unit according to claim 1, Each of the pair of electric wires is Each of the pair of terminals is welded, Electronic component unit.

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