Sensor-equipped cable

Abstract

To provide a cable with sensor with which it is possible to connect a connecting terminal and the cable without having to use an expensive facility.SOLUTION: The cable with sensor comprises a sensor having a connecting terminal, a cable, and a crimp-type terminal that is provided at an end of the cable and is connected to the connecting terminal. The crimp-type terminal includes a cylindrical fitting part that accommodates the connecting terminal and is fitted to the connecting terminal. The fitting part includes a leaf spring in the inside that is in contact with the connecting terminal. The cable with sensor further includes, for example, a holder that holds the sensor, and a cover that is attached to the holder. The cover at least partly covers a section where the connecting terminal and the crimp-type terminal are connected.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a cable with a sensor. [Background technology]

[0002] Patent Document 1 discloses a rotation detection device for a vehicle. The rotation detection device detects the rotation speed of a rotating member that rotates together with a wheel. The rotation detection device includes a sensor-equipped cable. The sensor-equipped cable includes a sensor having a connection terminal and a cable. The center conductor of the cable is connected to the connection terminal. One method for connecting the center conductor and the connection terminal is welding. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-179450 Summary of the Invention [Problem to be solved by the invention]

[0004] Welding the central conductor and the connection terminal requires expensive equipment. In one aspect of the present disclosure, it is preferable to provide a sensor-equipped cable that can connect the connection terminal and the cable without necessarily using expensive equipment. [Means for solving the problem]

[0005] One aspect of the present disclosure is a sensor-equipped cable including a sensor having a connection terminal, a cable, and a crimp terminal provided at an end of the cable and connected to the connection terminal. The crimp terminal includes a tubular fitting portion that accommodates the connection terminal and fits with the connection terminal. The fitting portion includes a leaf spring therein that contacts the connection terminal. In a sensor-equipped cable according to one aspect of the present disclosure, the connection terminal and the cable can be connected by a crimp terminal, which makes it possible to connect the connection terminal and the cable without necessarily using expensive equipment. [Brief explanation of the drawings]

[0006] [Figure 1] FIG. 2 is a plan view illustrating the configuration of a cable with a sensor. [Figure 2] FIG. 2 is a side view illustrating the configuration of a cable with a sensor. [Figure 3] FIG. 2 is a plan view showing the configuration of the sensor-equipped cable excluding the cover. [Figure 4] FIG. 2 is a side view showing the configuration of the sensor-equipped cable excluding the holder and the cover. [Figure 5] FIG. 2 is a plan view illustrating the configuration of the crimp terminal and the cable. [Figure 6] FIG. 2 is a side view illustrating the configuration of the crimp terminal and the cable. [Figure 7] FIG. 2 is a plan view illustrating the configuration of a sensor. [Figure 8] FIG. 2 is a side view illustrating the configuration of the sensor. [Figure 9] FIG. 2 is a plan view illustrating the configuration of a holder. [Figure 10] FIG. 2 is a side view illustrating the configuration of the holder. [Figure 11] FIG. 2 is a plan view illustrating the configuration of the cover. [Figure 12] FIG. 4 is a side view illustrating the configuration of the cover. DETAILED DESCRIPTION OF THE INVENTION

[0007] Exemplary embodiments of the present disclosure will now be described with reference to the drawings. 1. Configuration of sensor-equipped cable 1 The configuration of the sensor-equipped cable 1 will be described with reference to Figures 1 to 12. For the sake of convenience, the X, Y, and Z directions are defined in each figure.

[0008] As shown in FIGS. 1 and 2, the sensor-equipped cable 1 includes a sensor 3, a cable 5, crimp terminals 7A and 7B, a holder 9, and a cover 11. 7 and 8, the sensor 3 includes a sensing element 21, lead wires 23A and 23B, and a capacitor 25. The lead wires 23A and 23B correspond to connection terminals. The sensing element 21 detects, for example, magnetism. The sensing element 21 has a rectangular plate shape.

[0009] The lead wires 23A and 23B extend straight in the X direction from the sensing element 21. The longitudinal direction of the lead wire 23A and the longitudinal direction of the lead wire 23B are parallel to each other. The lead wires 23A and 23B are arranged side by side at an interval in the Y direction. The lead wires 23A and 23B each have a plate-like shape. The thickness direction of the lead wires 23A and 23B is the Z direction.

[0010] Capacitor 25 is attached to lead wires 23A and 23B. In the X direction, capacitor 25 is located near the center of lead wires 23A and 23B. As shown in Fig. 8, capacitor 25 protrudes in the Z direction beyond lead wires 23A and 23B.

[0011] As shown in FIGS. 5 and 6 , the cable 5 includes electric wires 31A, 31B and a wire insulator 33. The electric wires 31A, 31B are covered with the wire insulator 33. The electric wire 31A includes an electric wire conductor 35A and a wire insulator 37A. The electric wire conductor 35A is covered with the wire insulator 37A. The electric wire 31B includes an electric wire conductor 35B and a wire insulator 37B. The electric wire conductor 35B is covered with the wire insulator 37B.

[0012] On the side of cable 5 opposite the X-direction, wire insulator 33 is removed, exposing wires 31A and 31B. On end 39A of exposed wire 31A opposite the X-direction, wire insulator 37A is removed, exposing wire conductor 35A. On end 39B of exposed wire 31B opposite the X-direction, wire insulator 37B is removed, exposing wire conductor 35B.

[0013] Two crimp terminals 7A, 7B are provided at the end of the cable 5. The crimp terminal 7A is made of a conductive material. The crimp terminal 7A is made of, for example, metal. The crimp terminal 7A is attached to the electric wire 31A. The crimp terminal 7A includes a fitting portion 41A, a first crimping portion 43A, and a second crimping portion 45A. The fitting portion 41A has the same configuration as the fitting portion 41B described below. The first crimping portion 43A is crimped to the end portion 39A. The second crimping portion 45A is crimped to a portion of the electric wire 31A adjacent to the end portion 39A, where the electric wire insulator 37A is present.

[0014] The crimp terminal 7B is attached to the electric wire 31B. The crimp terminal 7B includes a fitting portion 41B, a first crimping portion 43B, and a second crimping portion 45B. As shown in FIG. 6, the fitting portion 41B has a basic rectangular tubular shape. The rectangular tubular shape corresponds to a cylindrical shape. The axial direction of the fitting portion 41B is parallel to the X direction. The fitting portion 41B includes an opening 46 on the side opposite to the X direction.

[0015] The fitting portion 41B has therein a leaf spring 47. The first crimping portion 43B is crimped to the end portion 39B. The second crimping portion 45B is crimped to a portion of the electric wire 31B adjacent to the end portion 39B, where the electric wire insulator 37B is present.

[0016] As shown in Figures 3 and 4, lead wire 23A is inserted into fitting portion 41A from the side of opening 46. Fitting portion 41A accommodates lead wire 23A. That is, fitting portion 41A and lead wire 23A are fitted together. By fitting fitting portion 41A and lead wire 23A together, crimp terminal 7A is connected to lead wire 23A. The lead wire 23A comes into contact with the leaf spring 47 in the fitting portion 41A, elastically deforming the leaf spring 47. The elastically deformed leaf spring 47 is pressed against the lead wire 23A by its restoring force. The action of the leaf spring 47 further ensures a reliable electrical connection between the fitting portion 41A and the lead wire 23A.

[0017] As shown in Figures 3 and 4, lead wire 23B is inserted into fitting portion 41B from the side of opening 46. Fitting portion 41B accommodates lead wire 23B. That is, fitting portion 41B and lead wire 23B are fitted together. By fitting fitting portion 41B and lead wire 23B, crimp terminal 7B is connected to lead wire 23B. Lead wire 23B comes into contact with leaf spring 47 in fitting portion 41B, elastically deforming leaf spring 47. The elastically deformed leaf spring 47 is pressed against lead wire 23B by its restoring force. The action of leaf spring 47 further ensures a reliable electrical connection between fitting portion 41B and lead wire 23B.

[0018] 9 and 10, the holder 9 has a basic plate-like shape. The longitudinal direction of the holder 9 is the X direction. The thickness direction of the holder 9 is the Z direction. The material of the holder 9 is preferably an insulating material. The holder 9 is made of, for example, resin.

[0019] The holder 9 includes a partition plate 51, holes 53 and 55, and a guide plate 57. The partition plate 51 is provided on a surface 59, which is one of the main surfaces of the holder 9. The surface 59 is the surface on the Z direction side. The partition plate 51 protrudes in the Z direction from the surface 59. The partition plate 51 also extends along the X direction. The partition plate 51 is located at the center of the surface 59 in both the X direction and the Y direction.

[0020] The holes 53 and 55 are open at a surface 59. The depth direction of the holes 53 and 55 is parallel to the Z direction. As shown in FIG. 9, the holes 53 and 55 are aligned at intervals along the Y direction. In the Y direction, a partition plate 51 is present between the holes 53 and 55. When viewed from the Z direction, the longitudinal direction of the holes 53 and 55 is parallel to the X direction.

[0021] Guide plate 57 is provided at the end of surface 59 on the X-direction side. Guide plate 57 protrudes in the Z-direction from surface 59. As shown in FIGS. 1 and 3, guide plate 57 has U-shaped wire guide grooves 61A and 61B.

[0022] 1 to 3, the sensor 3, the crimp terminals 7A and 7B, and portions of the cable 5 on the side opposite to the X-direction are held on the surface 59. The crimp terminals 7A and 7B are located closer to the X-direction than the sensor 3. The electric wire 31A is connected to the crimp terminal 7A at an end 39A, and is inserted into and held in the electric wire guide groove 61A. The electric wire 31B is connected to the crimp terminal 7B at an end 39B, and is inserted into and held in the electric wire guide groove 61B.

[0023] The orientation of the sensor 3 is such that the lead wires 23A and 23B are closer to the X-direction than the sensing element 21. The orientation of the crimp terminal 7A is such that the first crimping portion 43A is closer to the X-direction than the fitting portion 41A. The orientation of the crimp terminal 7B is such that the first crimping portion 43B is closer to the X-direction than the fitting portion 41B.

[0024] 1 and 3, the fitting portion 41A and the fitting portion 41B are separated by a partition plate 51. That is, the partition plate 51 is provided between the two fitting portions 41A and 41B. Therefore, the partition plate 51 prevents the fitting portion 41A and the fitting portion 41B from contacting each other. In addition, the partition plate 51 prevents the fitting portion 41A and the fitting portion 41B from moving in the Y direction or the opposite direction.

[0025] As shown in Figures 11 and 12, the cover 11 has a basic plate-like shape. The thickness direction of the cover 11 is the Z direction. The cover 11 has a slit 71, legs 73 and 75, and a protrusion 77. The slit 71 penetrates the cover 11 in the Z direction. The slit 71 extends along the X direction. The slit 71 is located at the center of the cover 11 in the Y direction.

[0026] The legs 73 and 75 are formed on a surface 79, which is one of the main surfaces of the cover 11. The surface 79 is a surface that is located in the opposite direction to the Z direction. As shown in FIG. 12, the legs 73 and 75 are plate-shaped members that protrude from the surface 79 in the opposite direction to the Z direction. As shown in FIG. 11, the legs 73 and 75 are arranged at intervals in the Y direction. As shown in FIG. 12, the protrusion 77 is a portion that protrudes from the surface 79 in the opposite direction to the Z direction. As shown in FIGS. 11 and 12, the protrusion 77 is located at the end of the cover 11 on the X direction side.

[0027] As shown in FIGS. 1 and 2, the cover 11 is attached to the holder 9 from the Z direction side. At this time, the leg portion 73 is inserted into the hole 53. The leg portion 75 is inserted into the hole 55. The partition plate 51 passes through the slit 71 and protrudes further in the Z direction than the cover 11. The partition plate 51 is inserted into the slit 71.

[0028] Cover 11 covers the portion where lead wire 23A is fitted with fitting portion 41A from the Z direction. Cover 11 also covers the portion where lead wire 23B is fitted with fitting portion 41B from the Z direction. When viewed from the Z direction, openings 46 of fitting portions 41A and 41B are covered by cover 11. Openings 46 of fitting portions 41A and 41B are sandwiched from both sides in the Z direction by holder 9 and cover 11. The portion where lead wire 23A is fitted with fitting portion 41A corresponds to the portion where lead wire 23A is connected with crimp terminal 7A. The portion where lead wire 23B is fitted with fitting portion 41B corresponds to the portion where lead wire 23B is connected with crimp terminal 7B.

[0029] 2, the protrusion 77 is located closer to the X direction than the mating portions 41A and 41B. The protrusion 77 faces the X direction end portions of the mating portions 41A and 41B. Therefore, even if a force is applied to the mating portions 41A and 41B in the X direction, the mating portions 41A and 41B are unlikely to move in the X direction.

[0030] 1 and 2, the cover 11 and the capacitor 25 are adjacent to each other in the X direction. In addition, the cover 11 is higher than the capacitor 25 in the Z direction. 1 and 2, leg portion 73 is in the Y direction when viewed from opening 46 of fitting portion 41A. Furthermore, leg portion 75 is in the opposite direction from the Y direction when viewed from opening 46 of fitting portion 41B. Openings 46 of fitting portions 41A and 41B are sandwiched on both sides in the Y direction by leg portion 73 and leg portion 75.

[0031] 2. How to use the sensor cable 1 The sensor-equipped cable 1 is used, for example, as part of a rotation detection device for a vehicle. For example, the portion of the sensor-equipped cable 1 including the sensor 3 and the crimp terminals 7A and 7B is covered with a resin mold.

[0032] 3. Benefits of Sensor-Equipped Cable 1 (3-1) In the sensor-equipped cable 1, the lead wires 23A, 23B and the cable 5 can be connected by the crimp terminals 7A, 7B. Therefore, the lead wires 23A, 23B and the cable 5 can be connected without necessarily using expensive equipment. (3-2) The crimp terminal 7A has a cylindrical fitting portion 41A. The fitting portion 41A accommodates the lead wire 23A and fits with the lead wire 23A. The fitting portion 41A has a leaf spring 47 therein that comes into contact with the lead wire 23A. This further ensures a reliable electrical connection between the crimp terminal 7A and the lead wire 23A. The crimp terminal 7B also has the same effects as the crimp terminal 7A.

[0033] (3-3) The sensor-equipped cable 1 includes a holder 9 and a cover 11. The cover 11 covers the portion where the lead wire 23A is fitted to the fitting portion 41A and the portion where the lead wire 23B is fitted to the fitting portion 41B. Therefore, when resin molding is performed, it is possible to prevent resin from entering the fitting portions 41A and 41B.

[0034] Cover 11 is adjacent to capacitor 25 in the X direction. Cover 11 is also higher than capacitor 25 in the Z direction. Therefore, when resin molding is performed, pressure from the resin is unlikely to be applied to capacitor 25. As a result, even when resin molding is performed, lead wires 23A, 23B can be prevented from coming off fitting portions 41A, 41B.

[0035] Leg portion 73 is in the Y direction when viewed from opening 46 of fitting portion 41A. Furthermore, leg portion 75 is in the opposite direction to the Y direction when viewed from opening 46 of fitting portion 41B. Therefore, when resin molding is performed, leg portions 73 and 75 can prevent resin from entering fitting portions 41A and 41B from opening 46. (3-4) The holder 9 includes a partition plate 51. The partition plate 51 is provided between the two fitting portions 41A and 41B. The partition plate 51 can prevent the two fitting portions 41A and 41B from coming into contact with each other. A slit 71 is formed in the cover 11. The partition plate 51 is inserted through the slit 71. Therefore, even if the partition plate 51 is present, the cover 11 can be brought close to the holder 9.

[0036] 4. Other Embodiments Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments and can be implemented in various modifications.

[0037] (4-1) The sensor-equipped cable 1 may be used in devices other than rotation detection devices. The sensor 3 may be a sensor that detects physical properties other than magnetism. (4-2) The crimp terminals 7A and 7B can be appropriately selected from known crimp terminals.

[0038] (4-3) The sensor-equipped cable 1 does not have to include the holder 9. Even in this case, the effect of (3-1) above can be achieved. The sensor-equipped cable 1 does not have to include the cover 11. Even in this case, the effect of (3-1) above can be achieved.

[0039] (4-4) The function of one component in each of the above embodiments may be shared among multiple components, or the functions of multiple components may be performed by one component. Also, part of the configuration of each of the above embodiments may be omitted. Furthermore, at least part of the configuration of each of the above embodiments may be added to or substituted for the configuration of another of the above embodiments.

[0040] (4-5) In addition to the sensor-equipped cable 1 described above, the present disclosure can also be realized in various forms, such as a system including the sensor-equipped cable as a component, a method for manufacturing the sensor-equipped cable, and the like. [Explanation of symbols]

[0041] 1...sensor-equipped cable, 3...sensor, 5...cable, 7A, 7B...crimp terminal, 9...holder, 11...cover, 21...sensing element, 23A, 23B...lead wire, 25...capacitor, 31A, 31B...wire, 33...wire insulator, 35A, 35B...wire conductor, 37A, 37B...wire insulator, 39A, 39B...end, 41A, 41B...mating portion, 43A, 43B...first crimping portion, 45A, 45B...second crimping portion, 46...opening, 47...leaf spring, 51...partition plate, 53, 55...hole, 57...guide plate, 59...surface, 61A, 61B...wire guide groove, 71...slit, 73, 75...leg portion, 77...protrusion, 79...surface

Claims

1. A sensor having two connection terminals and a capacitor attached to the two connection terminals; Cable and two crimp terminals provided at the end of the cable and connected to the two connection terminals; a holder for holding the sensor; Equipped with The two crimp terminals each include a cylindrical fitting portion that accommodates the connection terminal and fits with the connection terminal, the fitting portion includes a leaf spring therein that comes into contact with the connection terminal; the holder includes a partition plate provided between the two fitting portions and configured to prevent the two fitting portions from coming into contact with each other; The capacitor is in contact with the partition plate. Cable with sensor.

2. The sensor-equipped cable according to claim 1, a cover attached to the holder; The cover covers at least a part of a portion where the connection terminal and the crimp terminal are connected. Cable with sensor.

3. The sensor-equipped cable according to claim 2, The cover has a slit through which the partition plate is inserted. Cable with sensor.

Images