Holding structure of circuit body

Abstract

To provide a holding structure of a circuit body, capable of holding a circuit body having a sheet material and a conductor by a case.SOLUTION: The holding structure of the circuit body includes: a circuit body 31 having a sheet material 32 and a conductor 33; and a case 70 for holding the circuit body 31. The sheet material 32 has a recessed part 34 notched so that an edge of the sheet material 32 does not interfere with the conductor 33. The case 70 has: a groove part 71 for storing the sheet material 32; a columnar protruding part 77 protruding from groove side walls 73, 74 of the groove part 71 toward the recessed part 34 of the circuit body 31 and extend in ta depth direction of the groove part 71; and a cover part 76 for covering an opening of the groove part 71.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a holding structure for a circuit body including a sheet material and a conductor, and a case for holding the circuit body.

Background Art

[0002] Conventionally, a holding structure for holding a sheet material in a case has been proposed. One of the conventional holding structures for a sheet material is to hold the sheet material at a predetermined position of the case by inserting a protrusion provided on the case into a through hole provided at the center in the width direction of the sheet material (see, for example, Patent Document 1).

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, when holding a circuit body having a sheet material and various conductors (for example, a circuit body having a structure in which an electric wire extends along the sheet surface of the sheet material, a flat cable having a circuit pattern and an electric wire built in the sheet material, etc.) in a case, in order to provide a through hole as in the above-described conventional sheet material, it is necessary to arrange the through hole avoiding the conductor. However, depending on the size of the sheet material and the arrangement of the conductor, it may be difficult to provide such a through hole. On the other hand, when a holding structure such as a through hole and a protrusion is not provided, there is a concern that the sheet material may be displaced from a predetermined position of the case. Thus, when holding a circuit body having a sheet material and a conductor in a case, it is difficult to directly use the above-described conventional holding structure for the sheet material.

[0005] One object of the present invention is to provide a holding structure for a circuit body that can hold a circuit body having a sheet material and a conductor in a case.

Means for Solving the Problem

[0006] In order to achieve the above-described object, the holding structure of the circuit body according to the present invention is characterized as follows.

[0007] A holding structure of a circuit body, comprising: a circuit body having a sheet material and a conductor; and a case in which the circuit body is held, wherein the sheet material has a recess that is cut out so that an edge of the sheet material does not interfere with the conductor, and the case has a groove portion in which the sheet material is accommodated, a columnar convex portion that protrudes from a groove side wall of the groove portion toward the recess of the circuit body and extends in a depth direction of the groove portion, and a cover portion that covers an opening of the groove portion, being a holding structure of a circuit body.

Advantages of the Invention

[0008] In the holding structure of the present invention, when the circuit body is accommodated in the groove portion of the case, a columnar convex portion that protrudes from the groove side wall of the groove portion toward the recess of the circuit body is fitted into the recess provided so that the edge of the sheet material does not interfere with the conductor, and then the cover portion covers the opening of the groove portion. As a result, in the depth direction of the groove portion, the position of the circuit body is regulated by being sandwiched between the groove bottom and the cover portion, and in the extending direction of the groove portion, the position of the circuit body is regulated by the engagement between the recess of the circuit body and the columnar convex portion of the groove portion. Therefore, the holding structure of this configuration can properly hold the circuit body having the sheet material and the conductor in the case.

[0009] The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through the embodiments for carrying out the invention described below with reference to the accompanying drawings.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

MODE FOR CARRYING OUT THE INVENTION

[0011] <Embodiment> Hereinafter, a battery module 1 including a bus bar module 4 having a holding structure for a circuit body 31 (see FIG. 2 etc.) according to an embodiment of the present invention will be described with reference to the drawings. Hereinafter, for convenience of explanation, as shown in FIGS. 1 to 9, “front”, “rear”, “left”, “right”, “up” and “down” are defined. The “front-rear direction”, “left-right direction” and “up-down direction” are orthogonal to each other.

[0012] As shown in Fig. 1, the battery module 1 is configured by attaching a pair of left and right bus bar modules 4 extending in the front-rear direction to both left and right side surfaces of the assembled battery 2 in the shape of a rectangular parallelepiped that is long in the front-rear direction. The assembled battery 2 is configured by stacking a plurality of battery cells 3 in the shape of a rectangular parallelepiped that is short in the front-rear direction in the front-rear direction. If necessary, for each of the pair of left and right bus bar modules 4, as shown in Fig. 2, a resin cover 90 in the shape of a substantially rectangular flat plate extending in the front-rear direction may be attached to the bus bar module 4 so as to cover the outer surface (the surface on the outer side in the left-right direction) of the bus bar module 4. The battery module 1 is used, for example, in an electric vehicle that runs using an electric motor, a hybrid vehicle that runs using both an engine and an electric motor, etc., and is used for applications such as supplying power to the electric motor.

[0013] At the lower end portions of both left and right side surfaces of the battery cell 3, a pair of electrodes 3a are provided so as to protrude outward in the left-right direction (see Fig. 1). One of the pair of electrodes 3a is the positive electrode and the other is the negative electrode. In the assembled battery 2, a plurality of battery cells 3 are stacked in the front-rear direction such that the left-right positions of the positive and negative electrodes of the battery cells 3 adjacent in the front-rear direction are opposite to each other. Therefore, at each of the lower end portions of both left and right side surfaces of the assembled battery 2, a plurality of electrodes 3a are arranged in a row such that the positive and negative electrodes are alternately arranged in the front-rear direction. The electrode 3a (one of the positive and negative electrodes) on the right side of the battery cell 3 located at the rear end of the assembled battery 2, and the electrode 3a (the other of the positive and negative electrodes) on the left side of the battery cell 3 located at the front end of the assembled battery 2 function as the main electrodes (that is, the main positive electrode and the main negative electrode) 3aa for power input / output from the assembled battery 2 to an external load (see Figs. 1 and 2).

[0014] The pair of left and right bus bar modules 4 have the same configuration except that their arrangements in the front-rear direction and the left-right direction are opposite to each other. Hereinafter, only the right bus bar module 4 will be described in detail, and the detailed description of the left bus bar module 4 will be omitted.

[0015] As shown in FIGS. 1 and 2, the right bus bar module 4 includes a plurality of intermediate bus bars 10 (see FIG. 2), a single end bus bar 20, a single thermistor 25, a plurality of voltage detection lines 30 respectively connected to the plurality of intermediate bus bars 10 and the single end bus bar 20, a circuit body 31 including an electric wire extending from the thermistor 25, and a resin case 40. The resin case 40 has an intermediate holding portion 50 that holds the plurality of intermediate bus bars 10 and a circuit body holding portion 70 that holds the circuit body 31. The resin case 40 is a resin molded body having a structure in which the intermediate holding portion 50 and the circuit body holding portion 70 are integrally molded.

[0016] As shown in FIGS. 1 and 2, the intermediate holding portion 50 is provided so as to extend in the front-rear direction along the right side surface of the assembled battery 2. It integrally includes a main body portion 51 that linearly extends in the front-rear direction and a plurality of bus bar holding portions 52 (see FIG. 2) arranged in a row in the front-rear direction below the main body portion 51. A main line accommodating groove 53 that is recessed leftward (inside in the left-right direction) and extends in the front-rear direction is formed on the right side surface (outside in the left-right direction) of the main body portion 51. The main line accommodating groove 53 accommodates and routes a plurality of voltage detection lines 30 that are individually connected to the plurality of intermediate bus bars 10 and the single end bus bar 20. Each bus bar holding portion 52 accommodates and fixes a corresponding intermediate bus bar 10 so as to be conductively connected to a corresponding pair of electrodes 3a adjacent in the front-rear direction.

[0017] As shown in FIGS. 1 and 2, at the rear end portion of the right side surface of the assembled battery 2, the end bus bar 20 is conductively connected to the total electrode 3aa of the battery cell 3 located at the rear end of the assembled battery 2.

[0018] The other ends of the plurality of voltage detection lines 30 connected to the plurality of intermediate bus bars 10 and the end bus bar 20 are connected to a voltage detection device (not shown). Thereby, the voltage detection device can detect the potentials of the corresponding pair of electrodes 3a or the corresponding total electrode 3aa that are conductively connected to the respective voltage detection lines 30.

[0019] As shown in FIGS. 1 and 2, the circuit body holding portion 70 is provided at the front end portion of the right side surface of the assembled battery 2 and holds a circuit body 31 including an electric wire 33 and a sheet material 32. The electric wire 33 is connected to the thermistor 25, and the thermistor 25 is attached to the end portion of the sheet material 32 by adhesion or the like. The electric wire 33 may be fixed to the sheet surface of the sheet material 32 (that is, the surface facing the battery cell 3) with an adhesive or the like, or may be integrated with the sheet material 32 via the thermistor 25 without being fixed to the sheet surface of the sheet material 32. In the present application, the structure in which the electric wire 33 extends "along" the sheet surface of the sheet material 32 includes both the former structure (the structure when the electric wire 33 is fixed to the sheet surface) and the latter structure (the structure when the electric wire 33 is not fixed to the sheet surface). Details of the holding structure of the circuit body 31 by the circuit body holding portion 70 will be described later. As shown in FIG. 3, the thermistor 25 is fixed to the right side surface of the battery cell 3 located at the front end of the assembled battery 2 in a manner capable of detecting the temperature of the side surface. For example, since the sheet material 32 can be flexibly bent in the thickness direction, manufacturing tolerances of each component can be absorbed by the bending of the sheet material 32, and the thermistor 25 can be easily brought into close contact with the right side surface of the battery cell 3. Further, even when the battery cell 3 expands or contracts due to a temperature change, the thermistor 25 can maintain a state of being in close contact with the battery cell 3. The other ends of a pair of electric wires 33 connected to the thermistor 25 and extending along the circuit body 31 are connected to a temperature detection device (not shown). Thereby, the temperature detection device can detect the temperature of the battery cell 3 located at the front end of the assembled battery 2.

[0020] The holding structure of the circuit body 31 by the circuit body holding part 70 will be described below. First, the configuration of the circuit body 31 will be described. As shown in FIGS. 4, 5, 7, and 8, the circuit body 31 is an elongated rectangular flat plate shape extending vertically as a whole, and has a narrow portion in the front-rear direction between the location where the thermistor 25 is disposed and the location where it is housed in the circuit body holding part 70. Along the sheet surface of the sheet material 32, a pair of electric wires 33 extending from the thermistor 25 are configured to extend. For example, when attaching the pair of electric wires 33 to the sheet material 32, a part of the pair of electric wires 33 in the extending direction can be attached by adhesion or the like along the longitudinal direction of the sheet material 32. The sheet material 32 is made of a resin such as PET (polyethylene terephthalate), for example. The thermistor 25 is attached to one end in the longitudinal direction of the sheet material 32. A pair of electric wires 33 extend from the other end in the longitudinal direction of the sheet material 32. Recessed portions 34 notched so as not to interfere with the electric wires 33 are formed at each of a pair of edges in the width direction (front-rear direction in FIG. 4) of the sheet material 32. The pair of recessed portions 34 are arranged at different positions in the longitudinal direction of the sheet material 32.

[0021] Next, the configuration of the circuit body holding part 70 will be described. As shown in FIG. 5 and the like, the circuit body holding part 70 has a groove part 71 extending vertically upward along the right side surface of the battery cell 3 located at the front end of the assembled battery 2 from the front end part of the main body part 51. The groove part 71 is defined by a bottom wall 72 extending vertically, a front side wall 73 protruding rightward (outward in the left-right direction) from the front edge of the bottom wall 72 and extending vertically, and a rear side wall 74 protruding rightward (outward in the left-right direction) from the rear edge of the bottom wall 72 and extending vertically, and is open to the right (outward in the left-right direction).

[0022] A cover part 76 in a substantially rectangular flat plate shape is connected to the outer surface of the rear side wall 74 via a hinge part 75. The cover part 76 is rotatable between a closed state (see FIG. 3) covering the opening of the groove part 71 and an open state (see FIGS. 4 to 6) not covering the opening of the groove part 71.

[0023] As shown in FIGS. 6 and 8, in the groove portion 71, corresponding to the pair of concave portions 34 of the circuit body 31, a pair of columnar convex portions 77 are provided so as to project from the front side wall 73 and the rear side wall 74 into the inside of the groove portion 71 (in the front-rear direction inside) and extend in the depth direction (left-right direction) of the groove portion 71. The pair of columnar convex portions 77 are arranged at different positions from each other in the direction in which the groove portion 71 extends (up-down direction) corresponding to the pair of concave portions 34.

[0024] As shown in FIGS. 6 and 7, in the groove portion 71, a pair of trapezoidal portions 78 are provided so as to project from the bottom wall 72 toward the opening of the groove portion 71 (outward in the left-right direction) and leave a gap S in the width direction (front-rear direction) of the groove portion 71. The protruding height of the pair of trapezoidal portions 78 from the bottom wall 72 is lower than the protruding height of the columnar convex portions 77 from the bottom wall 72.

[0025] As shown in FIGS. 4 to 6, an engaged portion 79 is provided on the outer surface of the front side wall 73. In the closed state of the cover portion 76, the engaged portion 79 will engage with an engaging portion 83 (see FIGS. 4 to 6) of the cover portion 76 described later.

[0026] As shown in FIGS. 4 to 6, corresponding to the pair of columnar convex portions 77, the cover portion 76 is formed with a pair of through holes 81 into which the pair of columnar convex portions 77 are inserted in the closed state of the cover portion 76. On the inner surface of the cover portion 76, a plurality of protruding portions 82 are provided so as to face the pair of trapezoidal portions 78 and the depth direction (left-right direction) of the groove portion 71 in the closed state of the cover portion 76. An engaging portion 83 is provided at the side edge of the cover portion 76 opposite to the hinge portion 75. The configurations of the circuit body 31 and the circuit body holding portion 70 have been described above.

[0027] Next, the operation of holding the circuit body 31 in the circuit body holding portion 70 will be described. First, the cover portion 76 of the circuit body holding portion 70 is in an open state (see FIG. 6), and the circuit body 31 is accommodated in the groove portion 71 through the opening of the groove portion 71 (see FIGS. 4 and 5). Specifically, the circuit body 31 is accommodated in the groove portion 71 such that the pair of columnar convex portions 77 of the front and rear are respectively fitted into the pair of concave portions 34, the pair of electric wires 33 are passed through the gap S, and the sheet material 32 is placed on the pair of trapezoidal portions 78 of the front and rear (see FIGS. 4, 5, and 7). Here, the pair of concave portions 34 are arranged at different positions in the extending direction (vertical direction) of the groove portion 71. Thus, by performing the operation of accommodating the circuit body 31 in the groove portion 71 so that each columnar convex portion 77 is fitted into each concave portion 34, it is possible to naturally avoid the circuit body 31 being accommodated with the front and back of the sheet material 32 reversed. It is also possible to accommodate the circuit body 31 while guiding the circuit body 31 with the pair of columnar convex portions 77. By passing the pair of electric wires 33 through the gap S, it is possible to suppress problems such as the operation of placing the sheet material 32 on the pair of trapezoidal portions 78 of the front and rear being obstructed by the electric wires 33.

[0028] Next, the cover portion 76 is closed, and the engaging portion 83 of the cover portion 76 is locked to the engaged portion 79 of the groove portion 71. Thereby, a state in which the circuit body 31 is held by the circuit body holding portion 70 is obtained (see FIGS. 3, 7, and 8).

[0029] In the held state by the circuit body holding portion 70 of the circuit body 31, the engagement between the engaging portion 83 and the engaged portion 79 prevents the cover portion 76 from accidentally opening. Further, a plurality of protruding portions 82 are arranged to face each other in the depth direction (left - right direction) of the pair of stepped portions 78 and the groove portion 71 in the front - rear direction (see Fig. 7). Thereby, the plurality of protruding portions 82 regulate the position of the circuit body 31 within the groove portion 71 such that the circuit body 31 is positioned closer to the bottom wall 72 than the end portions on the opening side (outer side in the left - right direction) of the groove portion 71 of the columnar convex portion 77. For this reason, it is possible to suppress the circuit body 31 from moving to the opening side (outer side in the left - right direction) of the groove portion 71 and the engagement between the concave portion 34 of the circuit body 31 and the columnar convex portion 77 from being accidentally released. Further, the pair of columnar convex portions 77 of the groove portion 71 are inserted into the pair of through - holes 81 of the cover portion 76 (see Figs. 3 and 8). Thereby, it is possible to identify whether the cover portion 76 properly covers the opening of the groove portion 71 based on whether the columnar convex portion 77 is inserted into the through - hole 81.

[0030] In the held state by the circuit body holding portion 70 of the circuit body 31, in the depth direction (left - right direction) of the groove portion 71, the position of the circuit body 31 is regulated by the stepped portion 78 of the groove portion 71 and the protruding portion 82 of the cover portion 76, and in the extending direction (up - down direction) of the groove portion 71, the position of the circuit body 31 is regulated by the engagement between the concave portion 34 of the circuit body 31 and the columnar convex portion 77 of the groove portion 71.

[0031] <Function and Effect> As described above, according to the holding structure of the circuit body 31 according to this embodiment, when the circuit body 31 is accommodated in the groove portion 71 of the resin case 40 (circuit body holding portion 70), the concave portion 34 provided at the edge of the sheet material 32 so as not to interfere with the electric wire 33 is used. After fitting the columnar convex portion 77 protruding from the groove side walls (front side wall 73 and rear side wall 74) of the groove portion 71 into the concave portion 34 of the circuit body 31, the opening of the groove portion 71 can be covered with the cover portion 76. Thereby, in the depth direction (left - right direction) of the groove portion 71, the position of the circuit body 31 is regulated by the bottom wall 72 (stepped portion 78) and the cover portion 76 (protrusion portion 82), and in the extending direction (up - down direction) of the groove portion 71, the position of the circuit body 31 is regulated by the engagement between the concave portion 34 of the circuit body 31 and the columnar convex portion 77 of the groove portion 71. Therefore, the holding structure according to this embodiment can properly hold the circuit body 31 having the sheet material 32 and the electric wire 33 in the resin case 40 (circuit body holding portion 70).

[0032] Furthermore, the circuit body 31 has a pair of concave portions 34 at a pair of edges in the width direction of the sheet material 32, and the resin case 40 has a pair of columnar convex portions 77. Further, the pair of concave portions 34 are arranged at different positions in the extending direction (up - down direction) of the groove portion 71. By performing the operation of accommodating the circuit body 31 in the groove portion 71 so that each columnar convex portion 77 is fitted into each concave portion 34, it is possible to naturally avoid the circuit body 31 being accommodated with the front and back of the sheet material 32 reversed. Also, it is possible to accommodate the circuit body 31 while guiding the circuit body 31 with the pair of columnar convex portions 77. In addition, compared with the case where the engagement portion between the concave portion 34 and the columnar convex portion 77 is one place, it is also possible to suppress the displacement of the position of the circuit body 31 around the column axis of the columnar convex portion 77 centered on the engagement portion. Therefore, the workability of the operation of holding the circuit body 31 in the resin case 40 (circuit body holding portion 70) can be improved.

[0033] Furthermore, the circuit body 31 has a structure in which an electric wire 33 as a conductor extends along the sheet surface of the sheet material 32. Further, the resin case 40 has a pair of trapezoidal portions 78 protruding from the bottom wall 72 of the groove portion 71 toward the opening, with a gap S therebetween in the width direction (front-rear direction) of the groove portion 71. Then, with the electric wire 33 passed through this gap S, the sheet material 32 is placed on the trapezoidal portions 78. In this way, by placing the sheet material 32 on the trapezoidal portions 78 while passing the electric wire 33 through the gap S between the trapezoidal portions 78, the wiring path of the electric wire 33 is regulated, and it is possible to suppress problems such as the electric wire 33 interfering with the operation of attaching the cover portion 76.

[0034] Furthermore, the cover portion 76 has a through hole 81 into which the columnar convex portion 77 is inserted when the cover portion 76 covers the opening. Thereby, it is possible to identify whether the cover portion 76 properly covers the opening of the groove portion 71 based on whether the columnar convex portion 77 is inserted into the through hole 81.

[0035] Furthermore, the protrusion 82 of the cover portion 76 regulates the position of the circuit body 31 within the groove portion 71 such that the circuit body 31 is located closer to the bottom wall 72 than the end portion on the opening side of the columnar convex portion 77. Thereby, it is possible to suppress the circuit body 31 from moving to the opening side of the groove portion 71 and the engagement between the concave portion 34 of the circuit body 31 and the columnar convex portion 77 being unintentionally released.

[0036] <Other aspects> Note that the present invention is not limited to the above-described embodiments, and various modifications can be adopted within the scope of the present invention. For example, the present invention is not limited to the above-described embodiments, and can be appropriately modified, improved, etc. In addition, the material, shape, dimensions, number, arrangement location, etc. of each component in the above-described embodiments are arbitrary as long as the present invention can be achieved, and are not limited.

[0037] For example, in the above-described embodiment, as the circuit body 31 held by the circuit body holding portion 70, one having a structure in which a pair of electric wires 33 separate from the sheet material 32 extend along the sheet surface of the sheet material 32 is adopted. On the other hand, as shown in FIG. 9, as the circuit body 31 held by the circuit body holding portion 70, a flexible printed circuit (FPC) having a structure in which a pair of conductor lines 35 extending from the thermistor 25 are incorporated in an elongated rectangular flat plate-shaped sheet material 32 along the longitudinal direction of the sheet material 32 may be adopted. In the example shown in FIG. 9, at one end portion in the longitudinal direction of the sheet material 32, the thermistor 25 is attached by adhesion or the like, or the thermistor 25 is provided inside the flexible printed circuit. At the other end portion in the longitudinal direction of the sheet material 32, a connector 36 connected to the other end portions of a pair of conductor lines 35 extending from the thermistor 25 is provided. By fitting this connector 36 with a connector 37 connected to one end portion of a pair of electric wires 33 whose other end is connected to a temperature detection device (not shown), the pair of conductor lines 35 and the pair of electric wires 33 are electrically connected.

[0038] In the battery cell 3 constituting the battery module 1, the positive electrode 3a is disposed on one side of both the left and right side surfaces, and the negative electrode 3a is disposed on the other side of both the left and right side surfaces. On the other hand, in the battery cell 3 constituting the battery module 1, the positive electrode 3a may be disposed on one side in the left-right direction of the upper surface, and the negative electrode 3a may be disposed on the other side in the left-right direction of the upper surface. In addition, instead of the protruding electrode 3a as described above, the battery cell 3 may be configured to sandwich the battery component with a conductive plate material constituting the electrode 3a.

[0039] Furthermore, in the above-described embodiment, the intermediate bus bar 10 is configured to be connected to one positive electrode and one negative electrode of the battery cell 3. On the other hand, the intermediate bus bar 10 may be configured to be connected to a plurality of positive electrodes and a plurality of negative electrodes of the battery cell 3.

[0040] Furthermore, in the above-described embodiment, the holding structure for holding the intermediate bus bar 10 and the end bus bar 20 in the resin case 40 is applied to the bus bar module 4. In contrast, this holding structure can be applied when holding the terminals such as the intermediate bus bar 10 in a case such as the resin case 40 when electrically connecting the terminals to a connection target different from the electrode 3a of the battery cell 3 (for example, input / output terminals of various electrical components, power supply bus bars, exterior housings of various electrical components, frames of vehicles on which various electrical components are mounted, etc.).

[0041] Here, the features of the embodiments of the holding structure of the circuit body 31 according to the present invention described above are briefly summarized and listed in [1] to [5] below, respectively.

[0042] [1] A holding structure of a circuit body (31) including a circuit body (31) having a sheet material (32) and a conductor (33), and a case (70) in which the circuit body (31) is held, wherein the sheet material (32) has, a recess (34) in which an edge of the sheet material (32) is cut out so as not to interfere with the conductor (33), and the case (70) has, a groove portion (71) for accommodating the sheet material (32), a columnar convex portion (77) that protrudes from the groove side walls (73, 74) of the groove portion (71) toward the recess (34) of the circuit body (31) and extends in the depth direction of the groove portion (71), and a cover portion (76) that covers an opening of the groove portion (71). A holding structure of a circuit body.

[0043] The holding structure of the above [1] is such that when accommodating the circuit body in the groove portion of the case, a columnar convex portion protruding from the groove side wall of the groove portion toward the concave portion of the circuit body is fitted into a concave portion provided at the edge of the sheet material so as not to interfere with the conductor. Then, the cover portion covers the opening of the groove portion. As a result, in the depth direction of the groove portion, the position of the circuit body is restricted by being sandwiched between the groove bottom and the cover portion, and in the extending direction of the groove portion, the position of the circuit body is restricted by the engagement of the concave portion of the circuit body and the columnar convex portion of the groove portion. Therefore, the holding structure of this configuration can properly hold the circuit body having the sheet material and the conductor in the case.

[0044] [2] In the holding structure described in the above [1], the sheet material (32) has a pair of the concave portions (34) at one edge of the sheet material (32) and the other edge on the opposite side of the one edge, the pair of the concave portions (34) are arranged at different positions in the extending direction of the groove portion (71), the case (70) has a pair of the columnar convex portions (77) protruding toward the pair of the concave portions (34) on a pair of the groove side walls (73, 74) facing each other of the groove portion (71), A holding structure for a circuit body.

[0045] According to the holding structure of the configuration of the above [2], the circuit body has a pair of concave portions at a pair of edges of the sheet material, and the case has a pair of columnar convex portions on a pair of groove side walls. Further, the pair of concave portions are arranged at different positions in the extending direction of the groove portion. Thereby, by accommodating the circuit body in the groove portion so that each columnar convex portion is fitted into each concave portion, it is possible to naturally avoid the circuit body being accommodated in the groove portion with the front and back reversed. Further, it is also possible to accommodate the circuit body in the groove portion while guiding the circuit body with the pair of columnar convex portions. In addition, compared with the case where the engagement portion between the concave portion and the columnar convex portion is one location, it is also possible to suppress the displacement of the circuit body around the column axis of the columnar convex portion centered on the engagement portion.

[0046] [3] In the holding structure described in the above [1], the case (70) has a pair of trapezoidal portions (78) that protrude from the groove bottom (72) of the groove portion (71) toward the opening and have a protruding height from the groove bottom (72) lower than the protruding height of the columnar convex portion (77) from the groove bottom (72), with a gap (S) therebetween in the width direction of the groove portion (71), the circuit body (31) has a structure in which an electric wire (33) as the conductor extends along the sheet surface of the sheet material (32), the sheet material (32) is placed on the pair of trapezoidal portions (78), and the electric wire (33) is passed through the gap (S) between the pair of trapezoidal portions (78), and is accommodated in the groove portion Holding structure of a circuit body.

[0047] According to the holding structure of the configuration of the above [3], the circuit body has a structure in which an electric wire as the conductor extends along the sheet surface of the sheet material. Further, the case has a pair of trapezoidal portions that protrude from the groove bottom of the groove portion toward the opening, with a gap therebetween in the width direction of the groove portion. And the circuit body is placed on the pair of trapezoidal portions with the electric wire passed through this gap. Thereby, for example, by placing the sheet material on the trapezoidal portions while passing the electric wire through the gap between the pair of trapezoidal portions, the wiring path of the electric wire is regulated, and it is possible to suppress problems such as the electric wire interfering with the operation of attaching the cover portion.

[0048] [4] In the holding structure described in the above [1], the cover portion (76) has a through hole (81) into which the columnar convex portion (77) is inserted when the cover portion (76) is arranged to cover the opening, Holding structure of a circuit body.

[0049] According to the holding structure of the configuration of [4] above, the cover part has a through hole into which the columnar convex part is inserted when the cover part covers the opening. Thereby, it is possible to identify whether or not the cover part properly covers the opening of the groove part according to whether or not the columnar convex part is inserted into the through hole.

[0050] [5] In the holding structure described in [3] above, the cover part (76) has a protrusion part (82) on the cover surface of the cover part (76), the protrusion part (82) faces the circuit body (31) when the cover part (76) is arranged to cover the opening, and regulates the position of the circuit body (31) so that the circuit body (31) is located at a position closer to the groove bottom (72) than the end part on the opening side of the columnar convex part (77). Holding structure of the circuit body.

[0051] According to the holding structure of the configuration of [5] above, the protrusion part of the cover part regulates the position of the circuit body in the groove part so that the circuit body is located at a position closer to the groove bottom than the end part on the opening side of the columnar convex part. Thereby, it is possible to suppress the engagement between the concave part of the circuit body and the columnar convex part from being unintentionally released when the circuit body moves to the opening side of the groove part.

Explanation of reference numerals

[0052] 31 Circuit body 32 Sheet material 33 Electric wire (conductor) 34 Concave part 70 Circuit body holding part (case) 71 Groove part 72 Bottom wall (groove bottom) 73 Front side wall (groove side wall) 74 Rear side wall (groove side wall) 76 Cover part 77 Columnar convex part 78 Step part 81 Through hole 82 Protrusion part S Gap

Claims

1. A holding structure for a circuit body, comprising: a circuit body having a sheet material and a conductor; and a case for holding the circuit body, wherein the sheet material has a recess formed by cutting out so that an edge of the sheet material does not interfere with the conductor, the case has a groove portion for accommodating the sheet material, a columnar convex portion protruding from a groove side wall of the groove portion toward the recess of the circuit body and extending in a depth direction of the groove portion, and a cover portion for covering an opening of the groove portion, A holding structure for a circuit body.

2. In the holding structure according to Claim 1, the sheet material has a pair of the recesses at one edge of the sheet material and the other edge on the opposite side of the one edge, the pair of the recesses are arranged at different positions in a direction in which the groove portion extends, the case has a pair of the columnar convex portions protruding toward the pair of the recesses on a pair of the groove side walls facing each other of the groove portion, A holding structure for a circuit body.

3. In the holding structure according to Claim 1, the case has a pair of trapezoidal portions protruding from a groove bottom of the groove portion toward the opening and having a protruding height from the groove bottom lower than a protruding height of the columnar convex portion from the groove bottom, with a gap therebetween in a width direction of the groove portion, the circuit body has a structure in which an electric wire as the conductor extends along a sheet surface of the sheet material, the sheet material is placed on the pair of the trapezoidal portions, and the electric wire is passed through the gap between the pair of the trapezoidal portions, and is accommodated in the groove portion, A holding structure for a circuit body.

4. In the holding structure according to Claim 1, the cover portion has a through hole into which the columnar convex portion is inserted when the cover portion is arranged to cover the opening, A holding structure for a circuit body.

5. In the holding structure according to Claim 3, the cover portion has a protrusion on a cover surface of the cover portion, the protrusion faces the circuit body when the cover portion is arranged to cover the opening, and regulates a position of the circuit body so that the circuit body is positioned at a position closer to the groove bottom than an end portion of the columnar convex portion on the opening side, A holding structure for a circuit body.

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