Sensor device
The sensor device addresses the challenge of reliably covering the bent electric wire portion by using a bracket with a receiving surface to stabilize its position within the outer resin molded portion, enhancing water-stopping performance and productivity.
Patent Information
- Application Number
- JP2025046317
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2025-06-05
- Estimated Expiration
- 2042-01-21
AI Technical Summary
Existing sensor devices face challenges in reliably covering the bent lead-out portion of electric wires with the outer resin molded portion, leading to potential exposure and reduced water-stopping performance.
The sensor device incorporates a bracket with a receiving portion and a receiving surface that stabilizes the position of the bent pull-out portion of the electric wire within the electric wire covering portion, ensuring reliable coverage by the outer resin molded portion during molding.
This configuration effectively stabilizes the position of the bent electric wire portion, ensuring it is reliably covered by the outer resin molded portion, thereby enhancing water-stopping performance and productivity while reducing costs.
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Figure 2025085781000001_ABST
Abstract
Description
[Technical field]
[0001] The present disclosure relates to a sensor device. [Background technology]
[0002] Patent Document 1 discloses a composite molded part including an internal part, a primary molded part, and a secondary molded part. In this composite molded part, a screw fastening part is also integrally formed in the secondary molded part. An electric wire extending from the internal part passes through the primary molded part and the secondary molded part and is drawn out to the outside. [Prior art documents] [Patent documents]
[0003] [Patent Document 1] JP 2021-146663 A Summary of the Invention [Problem to be solved by the invention]
[0004] It is considered that the electric wire is kept in a bent state within the secondary molding part. In this case, it is desirable to be able to cover the bent portion more reliably with the secondary molding part.
[0005] Therefore, an object of the present disclosure is to make it possible to more reliably cover the bent lead-out portion of the electric wire with the outer resin molded portion. [Means for solving the problem]
[0006] The sensor device disclosed herein comprises an internal component including a sensor element, an outer resin molded portion having an electric wire extending from the internal component, a component covering portion covering at least a portion of the internal component, and an electric wire covering portion covering the portion of the electric wire extending from the internal component, and a bracket having an enclosing portion surrounding the electric wire covering portion and a fixing portion protruding outward from the enclosing portion, wherein the electric wire has a bent pull-out portion from a point where it bends within the electric wire covering portion to a point where it is pulled out from the electric wire covering portion, and the bracket comprises a receiving portion having a receiving surface that receives at least a portion of the outer periphery of the bent pull-out portion within the electric wire covering portion. Effect of the Invention
[0007] According to the present disclosure, the bent lead-out portion of the electric wire can be more reliably covered by the outer resin molded portion. [Brief description of the drawings]
[0008] [Figure 1] FIG. 1 is a perspective view showing a sensor device according to an embodiment. [Diagram 2] FIG. 2 is a perspective view showing a bracket of the sensor device. [Diagram 3] FIG. 3 is a cross-sectional view taken along line III-III in FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0009] [Description of the embodiments of the present disclosure] First, the embodiments of the present disclosure will be listed and described.
[0010] The sensor device of the present disclosure is as follows.
[0011] (1) A sensor device comprising: an internal component including a sensor element; an outer resin molded portion having an electric wire extending from the internal component, a component covering portion covering at least a portion of the internal component, and an electric wire covering portion covering a portion of the electric wire extending from the internal component; and a bracket having an enclosing portion surrounding the electric wire covering portion and a fixing portion protruding outward from the enclosing portion, wherein the electric wire has a bent pull-out portion from a point where it is bent within the electric wire covering portion to a point where it is pulled out from the electric wire covering portion, and the bracket comprises a receiving portion having a receiving surface that receives at least a portion of the outer periphery of the bent pull-out portion within the electric wire covering portion.
[0012] According to this sensor device, the wire covering portion can be molded with a die while at least a part of the outer periphery of the bent pull-out portion is received by the receiving surface, so that the position of the bent pull-out portion within the wire covering portion is stabilized and the bent pull-out portion is more reliably covered by the outer resin molding portion.
[0013] (2) In the sensor device of (1), the receiving surface may be shaped to contact a part of the bent drawn-out portion in a circumferential direction, which makes it easier to bring the bent drawn-out portion into contact with the receiving surface.
[0014] (3) In a sensor device according to (1) or (2), the outer resin molding portion may have a gate mark through which molten resin is injected, and at least a portion of the bent pull-out portion may be located between the gate mark and the receiving surface.
[0015] In this case, the resin pressure generated when the molten resin is injected from the gate is effectively received by the receiving surface, thereby stabilizing the position of the bent drawn-out portion within the outer resin molding portion.
[0016] (4) In the sensor device according to any one of (1) to (3), the receiving surface may receive at least a portion of the bent drawn-out portion from an inner peripheral side of the bent drawn-out portion.
[0017] In this case, at least a part of the bent drawn-out portion is pressed against the receiving surface, so that the electric wire can be easily maintained in the bent state within the die.
[0018] (5) In the sensor device according to any one of (1) to (4), the receiving portion may have an exposed surface that is exposed from the outer resin molded portion.
[0019] This allows the exposed surface to be brought into contact with a die for molding the outer resin molded portion, and the receiving surface can receive the electric wires with the receiving portion in contact with the die.
[0020] (6) In the sensor device of (5), the receiving portion may have a plurality of the exposed surfaces, and the portions of the receiving portion between the plurality of exposed surfaces may be covered by the outer resin molded portion.
[0021] In this case, since the portions between the multiple exposed surfaces are covered by the outer resin molded portion, the receiving portion is difficult to separate from the outer resin molded portion.
[0022] (7) In the sensor device according to any one of (1) to (6), at least a part of the bent portion of the bent lead-out portion may be located within the enclosure portion.
[0023] This makes it possible to stabilize the position of the bent pull-out portion within the wire covering portion even when at least a portion of the bent portion of the bent pull-out portion is located within the enclosing portion.
[0024] [Details of the embodiment of the present disclosure] Specific examples of the sensor device of the present disclosure will be described below with reference to the drawings. Note that the present disclosure is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope of the claims.
[0025] [Embodiment] The sensor device according to the embodiment will be described below. Fig. 1 is a perspective view showing a sensor device 10. Fig. 2 is a perspective view showing a bracket 50 of the sensor device. Fig. 3 is a cross-sectional view taken along line III-III in Fig. 1. Fig. 4 is a cross-sectional view taken along line IV-IV in Fig. 1. In Figs. 3 and 4, the outer shapes of the internal part 20 and the electric wire 30 are shown in cross section. Fig. 3 shows the outer shape of a die 90 for die-molding the outer resin molded portion 40.
[0026] The sensor device 10 includes an internal component 20, an electric wire 30, an outer resin molded portion 40, and a bracket 50. The internal component 20 has a sensor element 12 (see FIG. 3). In the internal component 20, the sensor element 12 is connected to an end of the electric wire 30. The outer resin molded portion 40 covers the internal component 20 and a portion of the electric wire 30 extending from the internal component 20. The bracket 50 is integrated with the outer periphery of the outer resin molded portion 40. The bracket 50 protrudes outward from the outer resin molded portion 40. The sensor device 10 is fixed to a fixing target of the sensor device 10 via the bracket 50. The electric wire 30 is bent in the outer resin molded portion 40. The direction in which the electric wire 30 extends from the outer resin molded portion 40 is different from the direction in which the electric wire 30 is drawn out from the internal component 20. The direction in which the electric wire 30 is drawn out from the outer resin molding portion 40 is set according to the path of the electric wire 30 in the fixing object of the sensor device 10 and the position of the connection destination of the electric wire 30. The fixing object of the sensor device 10 may be, for example, a vehicle, more specifically, a part near the wheel.
[0027] More specifically, the internal component 20 is the component that contains the sensor element 12 .
[0028] The sensor element 12 is an element that detects physical quantities such as magnetism, light, temperature, etc., or changes therein. Here, the sensor element 12 includes an element body 13 and a lead portion 14. The element body 13 is formed, for example, in a rectangular shape. The lead portion 14 is a long and thin portion formed of metal or the like. The lead portion 14 extends outward from the element body 13. An output signal of the sensor element 12 is outputted to the outside via an electric wire 30. The sensor device 10 is used, for example, as a sensor that detects the rotation speed of a wheel in a vehicle. More specifically, the sensor device 10 may be used as a sensor for an ABS (antilock braking system).
[0029] The internal component 20 includes an internal holder portion 26. The internal holder portion 26 is a resin portion that covers the sensor element 12 and the connection portion with the electric wire 30. The internal holder portion 26 is, for example, a resin molded portion molded with a die using the sensor element 12 and the connection portion between the lead portion 14 and the electric wire 30 as insert portions.
[0030] It is not essential that the internal holder portion 26 is a molded part with the sensor element 12 and the like as an insert portion. For example, the internal holder portion 26 may be molded into a shape into which the sensor element 12 can be fitted, and the sensor element 12 may be fitted into it. It is also not essential that the sensor device 10 includes the internal holder portion 26. The outer resin molded portion 40 may directly cover the sensor element 12.
[0031] The electric wire 30 is connected to the sensor element 12 and extends from the internal component 20. The electric wire 30 includes a core wire 30a, which is a conductor, and an insulating coating 30b that covers the periphery of the core wire 30a. The sensor device 10 includes the electric wires 30 in a number corresponding to the number of the lead portions 14 of the sensor element 12. For example, the sensor element 12 includes two lead portions 14, and the sensor device 10 includes two electric wires 30. The electric wires 30 are bundled and covered by a sheath 34. The sheath 34 is a coating formed of resin or the like. The electric wires 30 extend from an end of the sheath 34. The core wires 30a are exposed at the end of the electric wires 30. The core wires 30a at the end of each of the electric wires 30 are connected to the lead portion 14. The connection between the core wires 30a and the lead portion 14 may be performed by, for example, soldering or crimping. The sensor device 10 may include one electric wire 30. The multiple electric wires 30 do not need to be covered with a sheath.
[0032] The internal holder portion 26 covers the sensor element 12 , the connection portion between the lead portion 14 and the electric wire 30 , and the end of the electric wire 30 on the sensor element 12 side, and the electric wire 30 extends from the internal component 20 .
[0033] The longitudinal direction of the internal component 20 coincides with the longitudinal direction of the lead portion 14 of the sensor element 12. In this embodiment, the direction in which the electric wire 30 extends from the internal component 20 coincides with the longitudinal direction of the internal component 20, but this is not essential.
[0034] The outer resin molded part 40 is a resin part molded by a die using the inner component 20 and the part of the electric wire 30 drawn out from the inner component 20 as an insert part. The outer resin molded part 40 covers the sensor element 12 via the inner holder part 26, thereby improving the watertightness of the sensor element 12.
[0035] The outer resin molded portion 40 has a component covering portion 42 and an electric wire covering portion 44. The component covering portion 42 covers at least a portion of the internal component 20. The electric wire covering portion 44 covers a portion of the electric wires 30 that extends from the internal component 20.
[0036] More specifically, the component covering portion 42 is formed in an elongated shape, here a rectangular parallelepiped shape, that covers the internal component 20. The component covering portion 42 preferably covers the entire outer periphery of the internal component 20. A part of the internal component 20 may not be covered by the component covering portion 42 and may be exposed to the outside.
[0037] The wire covering portion 44 is connected to the end of the component covering portion 42 from which the wires 30 extend, and covers the end of the wires 30. In this embodiment, the wire covering portion 44 includes a covering body 46 and a drawer covering portion 48. The covering body 46 extends in a straight line from the component covering portion 42. The drawer covering portion 48 is connected to the covering body 46 on the opposite side to the component covering portion 42. The drawer covering portion 48 extends in an arc-like curve relative to the component covering portion 42. The end of the drawer covering portion 48 faces in a direction that forms an obtuse angle with respect to the covering body 46.
[0038] The electric wire 30 extends linearly from the internal part 20 to the middle of the cover body 46, and bends in an arc in the middle of the cover body 46. For example, the bent portion 38a of the electric wire 30 is bent to form an angle of 90° or less, for example, 80° or less. A part of the bent portion 38a of the electric wire 30 is embedded in the cover body 46, and the remaining part is embedded in the draw-out cover part 48. The part of the electric wire 30 opposite the internal part 20 with respect to the bent portion 38a is a straight portion 38b that extends linearly and is embedded in the end of the draw-out cover part 48. The part of the electric wire 30 from the point where it starts to bend in the electric wire cover part 44 to the point where it is drawn out from the electric wire cover part 44 is the bent draw-out part 38. In this embodiment, the bent draw-out part 38 includes the bent portion 38a and the straight portion 38b.
[0039] The bracket 50 has an enclosing portion 52 and a fixing portion 58. The bracket 50 is, for example, a resin portion molded by die molding with the outer resin molded portion 40 as an insert portion.
[0040] The surrounding portion 52 surrounds the electric wire covering portion 44 of the outer resin molding portion 40. In this embodiment, the surrounding portion 52 has a through hole 52h in which a part of the electric wire covering portion 44 in the longitudinal direction can be disposed. More specifically, the surrounding portion 52 has a part 52a having a U-shaped outer shape and a protrusion 52b protruding outward from one side of the U-shaped part. The through hole 52h is formed in an elongated hole shape formed from the center of the part 52a of the surrounding portion 52 to the protrusion 52b. The through hole 52h is semicircular on the side of the part 52a of the surrounding portion 52 and rectangular on the side of the protrusion 52b. A part of the electric wire covering portion 44 in the longitudinal direction is disposed in the through hole 52h. That is, the surrounding portion 52 surrounds a part of the outer periphery of the electric wire covering portion 44 in the longitudinal direction. The surrounding portion 52 has a surrounding protrusion 52p formed on the opening edge of the through hole 52h so as to protrude from the surrounding area.
[0041] A portion of drawer cover part 48 opposite sensor element 12 protrudes from the surface of bracket 50 opposite sensor element 12. An end of drawer cover part 48 opposite sensor element 12 is formed into end cover part 49 which protrudes further outward from protrusion 52b.
[0042] An extension cylinder portion 53 extends from around the through hole 52h of the surrounding portion 52 toward the internal component 20. The extension cylinder portion 53 is integrally connected to the surrounding portion 52 and surrounds the electric wire covering portion .
[0043] The surrounding portion 52 is positioned so as to surround at least a portion of the bent portion 38a of the bent pull-out portion 38 via the wire covering portion 44. That is, in the longitudinal direction of the covering body 46, the range in which the surrounding portion 52 exists and the range in which the bent portion 38a exists overlap with each other.
[0044] The outer resin molded portion 40 is molded with a die using the bracket 50 as an insert portion. Therefore, the inner peripheral surface of the through hole 52h of the bracket 50 is integrally joined to the outer peripheral surface of the bracket 50, and the bracket 50 is integrated with the outer resin molded portion 40.
[0045] The fixing portion 58 is connected to a part of the outer periphery of the above-mentioned surrounding portion 52, and extends outward from the part of the outer periphery of the surrounding portion 52. In this embodiment, the surrounding portion 52 and the fixing portion 58 are connected to each other to form an oval plate shape. A through hole 58h for screw fixing is formed in the fixing portion 58. A screw is inserted into the through hole 58h and screwed into a screw hole of the fixing object, thereby fixing the sensor device 10 to the fixing object with the screw. The fixing structure of the fixing portion 58 to the fixing object is not limited to the above example. For example, the fixing portion 58 may be fitted and fixed to the fixing object.
[0046] The bracket 50 includes a receiving portion 54 having a receiving surface 54f. The receiving surface 54f is a surface that receives at least a part of the outer periphery of the bent lead-out portion 38 within the electric wire covering portion 44.
[0047] That is, suppose that the electric wire passes straight through the outer resin molded part. In this case, when the outer resin molded part is molded with a die, the electric wire can be positioned so as to be pulled straight from the internal component. Therefore, the position of the electric wire is less likely to vary in the outer resin molded part, and the electric wire can be more reliably covered by the outer resin molded part. On the other hand, as described in this embodiment, if the electric wire 30 is bent in the outer resin molded part 40, it may be difficult to position the bent drawn-out portion 38 at a fixed position in the outer resin molded part 40 when the outer resin molded part 40 is molded with a die. In addition, the bent drawn-out portion 38 may move in the die due to resin pressure. In that case, the position of the bent drawn-out portion 38 in the outer resin molded part 40 may vary, and the bent drawn-out portion 38 may be exposed in the middle of the outer resin molded part 40. In this case, the electric wire 30 is exposed near the internal component 20.
[0048] Thus, the receiving surface 54f receives at least a part of the outer periphery of the bent drawn-out portion 38 when the outer resin molded portion 40 is molded using a die. The receiving surface 54f positions the bent drawn-out portion 38 at a fixed position within the outer resin molded portion 40. This allows the end of the electric wire 30 near the sensor element 12 to be covered by the outer resin molded portion 40 more reliably.
[0049] More specifically, the receiving portion 54 includes a partial cylindrical portion 55 and a partial protruding portion 56 .
[0050] The partial cylindrical portion 55 protrudes outward from a circumferential portion of the opening edge of the through hole 52h. In this embodiment, the base end of the partial cylindrical portion 55 is connected to a rectangular portion (projection portion 52b) of the opening edge of the through hole 52h. The partial cylindrical portion 55 protrudes from the projection 52b in a direction away from the center of the through hole 52h. In this embodiment, the direction in which the fixing portion 58 protrudes and the direction in which the receiving portion 54 protrudes are perpendicular to each other when viewed along the central axis of the through hole 52h.
[0051] Moreover, the partial cylindrical portion 55 extends in a direction oblique to the central axis of the through hole 52h. Here, the partial cylindrical portion 55 is inclined toward the side away from the sensor element 12 with respect to the direction perpendicular to the central axis of the through hole 52h. The extending direction of the central axis of the through hole 52h coincides with the longitudinal direction of the internal part 20 and also coincides with the longitudinal direction of the straight portion of the electric wire 30 from the internal part 20 to the bent lead-out portion 38.
[0052] The inner peripheral surface of the partial cylindrical portion 55, i.e., the surface opposite to the sensor element 12, is formed into a receiving surface 54f having an arc-shaped cross section. The cross section is a cross section in a plane perpendicular to the longitudinal direction of the partial cylindrical portion 55. The radius of curvature of the receiving surface 54f is set to a size that matches the outer shape of the electric wire 30 extending from the sensor element 12, for example. For example, the radius of curvature of the receiving surface 54f is set to the same as the radius of the sheath 34. The longitudinal direction of the receiving surface 54f, like the longitudinal direction of the partial cylindrical portion 55, is inclined away from the sensor element 12 with respect to the central axis of the through hole 52h.
[0053] As a result, the receiving surface 54f of the partial cylindrical portion 55 is formed into a shape that contacts a part of the circumferential direction of the bent drawn-out portion 38. Here, since the receiving surface 54f is formed into an arc-shaped cross section, it can come into surface contact with a part of the outer circumferential surface of the bent drawn-out portion 38. The receiving surface 54f preferably has an arc-shaped cross section that is smaller than a semicircle. This allows the electric wire 30 to easily come into contact with the receiving surface 54f. The receiving surface 54f may have an arc-shaped U-shaped cross section.
[0054] It is not essential that the receiving surface 54f is formed in the above-mentioned shape. The receiving surface may be formed as a flat surface. A plurality of protrusions may be formed at intervals along the circumferential direction of the bent drawn-out portion 38, and a receiving surface may be formed at the tip of each of the plurality of protrusions.
[0055] The bent drawn-out portion 38 is bent toward the receiving portion 54 at the through hole 52h and at the portion where the bent drawn-out portion 38 exits the through hole 52h. Therefore, the receiving surface 54f can receive at least a part of the bent drawn-out portion 38 from the inner periphery side of the bent drawn-out portion 38. For example, in a state where the electric wire 30 is passed through the through hole 52h of the bracket 50, the portion of the electric wire 30 opposite the sensor element 12 is pushed toward the sensor element 12 or is pulled while being bent. Then, the portion of the bent drawn-out portion 38 exiting the through hole 52h is pushed toward the receiving surface 54f. As a result, the inner periphery side portion of the bent drawn-out portion 38 is pressed against the receiving surface 54f, and the bent drawn-out portion 38 is positioned at a stable position.
[0056] The contact point between the receiving surface 54f and the bent drawn-out portion 38 is located within the end cover portion 49. In this embodiment, among the contact surfaces between the receiving surface 54f and the bent drawn-out portion 38, both circumferential edges and the base end side edge of the bent drawn-out portion 38 are located within the end cover portion 49. That is, the receiving surface 54f of the receiving portion 54 contacts a part of the outer periphery of the bent drawn-out portion 38 within the end cover portion 49. As a result, the part of the bent drawn-out portion 38 positioned by the receiving portion 54 is embedded in the end cover portion 49 of the draw-out portion 48 together with the receiving portion 54. Near the receiving portion 54, a part of the outer periphery of the bent drawn-out portion 38 is covered by the receiving portion 54, and the remaining part of the outer periphery of the bent drawn-out portion 38 is covered by the end cover portion 49.
[0057] The partial protrusion 56 partially protrudes from the outer peripheral surface of the partial cylindrical portion 55. The outer peripheral surface of the partial cylindrical portion 55 except for the partial protrusion 56 is covered by the inside of the end cover portion 49. The tip surface of the partial cylindrical portion 55 is an exposed surface 56f that is exposed from the end cover portion 49 of the outer resin molding portion 40.
[0058] In this embodiment, a plurality of (here, three) partial protrusions 56 are formed along the circumferential direction on the outer circumferential surface of the partial cylindrical portion 55. Gaps are formed between the plurality of partial protrusions 56. The portions of the partial cylindrical portion 55 between the plurality of partial protrusions 56 are covered by the end cover portion 49 of the outer resin molded portion 40. The tip surface of each of the plurality of partial protrusions 56 is exposed and continues continuously with the outer circumferential surface of the end cover portion 49.
[0059] An example of the operation of molding the outer resin molded portion 40 will be described. As shown in FIG. 3, a mold 90 having a mold surface 92 corresponding to the outer surface shape of the outer resin molded portion 40 is prepared. The mold 90 is formed with a positioning surface 93 for positioning the bracket 50 and an electric wire positioning surface 94 for positioning the electric wire 30 while drawing it out. The mold 90 may also be formed with a positioning pin for positioning the internal part 20. The mold 90 is formed with a gate 95 for injecting molten resin into the mold 90. The gate 95 is formed, for example, so as to open at a position on the mold surface 92 that faces the receiving portion 54 with respect to the bent drawn-out portion 38.
[0060] With the internal part 20, the electric wire 30, and the bracket 50 positioned within the mold surface 92, molten resin is injected into the mold 90 through the gate 95. The molten resin flows into the space within the mold surface 92 while hitting the bent drawn-out portion 38 of the electric wire 30 from the side opposite to the receiving portion 54. As a result, the bent drawn-out portion 38 is pressed toward the receiving portion 54, and the force is received by the receiving surface 54f. Therefore, the bent drawn-out portion 38 is maintained in a position where it is pressed against the receiving surface 54f. In other words, it is difficult for the bent drawn-out portion 38 to move within the mold surface 92 and come into contact with the mold surface 92, and a state in which a gap exists between the bent drawn-out portion 38 and the mold surface 92 is more reliably maintained. Therefore, the bent drawn-out portion 38 is more reliably covered by the outer resin molding portion 40.
[0061] After the molten resin in the mold surface 92 hardens, the sensor device 10 is demolded from the mold 90. It is assumed that a gate mark 59 is formed in a portion of the outer resin molded part 40 of the demolded sensor device 10 that corresponds to the gate 95. The gate mark 59 is a separation mark from the hardened resin in the gate 95, and is assumed to present unevenness as a cut mark or a cutting mark. It is considered that the gate mark 59 is formed, for example, at a position facing the receiving surface 54f on the outer surface of the outer resin molded part 40. In this case, at least a part of the bent drawn-out portion 38 is located between the gate mark 59 and the receiving surface 54f.
[0062] According to the sensor device 10 configured as above, the electric wire 30 has the bent drawn-out portion 38, and the bracket 50 has a receiving portion 54 having a receiving surface 54f that receives at least a part of the outer periphery of the bent drawn-out portion 38 in the electric wire covering portion 44. Therefore, the electric wire covering portion 44 can be molded with at least a part of the outer periphery of the bent drawn-out portion 38 being received by the receiving surface 54f. Therefore, the position of the bent drawn-out portion 38 in the electric wire covering portion 44 is determined, and the bent drawn-out portion 38 is more reliably covered by the outer resin molding portion 40. As a result, the electric wire 30 can be covered by the outer resin molding portion 40 at a length suitable for water stopping, and the desired water stopping performance can be ensured. Since it is not necessary to mold the outer resin molding portion in multiple steps in order to reliably cover the electric wire with resin, productivity is improved and costs can be reduced.
[0063] Furthermore, the receiving surface 54f comes into contact with a portion of the circumferential direction of the bent drawn-out portion 38. In the case where the bent drawn-out portion is positioned by the annular receiving surface, the electric wire is passed through the annular receiving surface. Compared to such a case, the receiving surface 54f can be brought into contact with the bent drawn-out portion 38 more easily.
[0064] Also, at least a part of the bent drawn portion 38 is located between the gate mark 59 and the receiving surface 54f. Therefore, when the resin pressure generated when injecting molten resin during molding of the outer resin molding portion 40 pushes the bent drawn portion 38, the pushing force is effectively received by the receiving surface 54f. This makes the position of the bent drawn portion 38 in the outer resin molding portion 40 more stable. This allows the bent drawn portion 38 to be covered by the outer resin molding portion 40 more reliably.
[0065] Further, the receiving surface 54f receives at least a part of the bent drawn-out portion 38 from the inner periphery side of the bent drawn-out portion 38. Therefore, it is easy to keep the electric wire 30 in a bent state in the die 90 by pressing at least a part of the bent drawn-out portion 38 against the receiving surface 54f. For example, by positioning the electric wire 30 at an outer position of the die surface 92 by pulling it or pressing it toward the inner periphery side, the electric wire 30 can be kept in a state pressed against the receiving surface 54f.
[0066] Furthermore, by injecting molten resin through a gate 95 formed on the outer periphery side of the bent drawn portion 38 in the mold 90, the bent drawn portion 38 can be pressed against the receiving surface 54f.
[0067] Furthermore, the receiving portion 54 has an exposed surface 56f that is exposed from the outer resin molded portion 40. This allows the exposed surface 56f to be pressed against a mold surface 92 when the outer resin molded portion 40 is molded using a mold. Therefore, when the receiving portion 54 is in contact with the mold surface 92, the receiving surface 54f can receive the bent drawn portion 38, making the position of the bent drawn portion 38 more stable.
[0068] Furthermore, the receiving portion 54 has a plurality of exposed surfaces 56f, and the portions of the receiving portion 54 between the plurality of exposed surfaces 56f are covered by the outer resin molded portion 40. For this reason, the receiving portion 54 is difficult to separate from the outer resin molded portion 40.
[0069] In addition, at least a part of the bent portion 38a of the bent pull-out portion 38 is located inside the enclosing portion 52. This makes it easier to increase the length of the bent portion 38a and to increase the minimum bending radius. Even in this case, the position of the bent pull-out portion 38 inside the wire covering portion 44 is stable.
[0070] In the above embodiment, the position of the receiving portion 54 is arbitrary. The receiving portion may contact the bent drawn-out portion 38 on the outer periphery side of the bent drawn-out portion 38, or may contact the bent drawn-out portion 38 from a direction perpendicular to the plane through which the bent drawn-out portion 38 passes.
[0071] Furthermore, one part of the receiving portion 54 does not have to be exposed from the outer resin molded portion 40, and the receiving portion may be entirely embedded within the outer resin molded portion.
[0072] The configurations described in the above embodiment and modifications can be combined as appropriate as long as they are not mutually inconsistent. [Explanation of symbols]
[0073] 10 Sensor device 12 Sensor element 13 Element body 14 Lead section 20 Internal parts 26 Internal holder part 30 Electric wire 30a core wire 30b Insulation coating 34 Sheath 38 Bent pull-out section 38a Bending part 38b Straight section 40 Outer resin molding part 42 Parts cover 44 Wire cover 46 Cover body 48 Drawer cover 49 End cover 50 Bracket 52 Enclosure 52h through hole 52p Enclosure protrusion 53 Extension cylinder part 54 Receptacle 54f receiving surface 55 Partial cylinder part 56f Exposed surface 56 Partial protrusion 58 Fixed part 58h through hole 59 Gate Remains 90 Mold 92 Mold surface 93 Locating Surface 94 Wire positioning surface Gate 95
Claims
1. an internal component including a sensor element; An electric wire extending from the internal component; an outer resin molding portion including a component covering portion that covers at least a portion of the internal component and an electric wire covering portion that covers a portion of the electric wire extending from the internal component; a bracket having an enclosure portion that surrounds the electric wire covering portion and a fixing portion that protrudes outward from the enclosure portion; Equipped with The electric wire has a bent pull-out portion from a portion where the electric wire is bent in the electric wire covering portion to a portion where the electric wire is pulled out from the electric wire covering portion, The sensor device, wherein the bracket is provided with a receiving portion having a receiving surface that receives at least a portion of an outer periphery of the bent pull-out portion within the wire covering portion.
2. The sensor device according to claim 1 , The receiving surface is shaped to contact a circumferential portion of the bent drawn-out portion.
3. The sensor device according to claim 1 or 2, the outer resin molding portion has a gate mark through which molten resin is injected, A sensor device, wherein at least a portion of the bent drawn-out portion is located between the gate mark and the receiving surface.
4. The sensor device according to any one of claims 1 to 3, The receiving surface receives at least a portion of the bent drawn-out portion from an inner circumferential side of the bent drawn-out portion.
5. The sensor device according to any one of claims 1 to 4, The receiving portion has an exposed surface exposed from the outer resin molding portion.
6. The sensor device according to claim 5, The receiving portion has a plurality of the exposed surfaces, A sensor device, wherein a portion of the receiving portion between the plurality of exposed surfaces is covered by the outer resin molding portion.
7. The sensor device according to any one of claims 1 to 6, At least a portion of the bent portion of the bent pull-out portion is located within the enclosure portion.
Citation Information
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