Electric connection box

Abstract

To suppress vibration of a bus bar.SOLUTION: An electric connection box includes a bus bar 10 having a flat bus bar base 11 and a male tab-shaped bus bar terminal connection portion 12A erected from the bus bar base, a relay component 20 provided with a relay terminal connection portion 22, an intermediate terminal fitting 30 that physically and electrically connects the bus bar terminal connection portion and also physically and electrically connects the relay terminal connection portion, and a housing 40 that accommodates the bus bar, the relay component and the intermediate terminal fitting. The housing includes a case member 50 in which a bus bar accommodating chamber 51 that accommodates the bus bar is formed, and a cover member 60 that covers the case member together with the bus bar, the bus bar is provided with at least one vibration damping portion 13 that damps vibrations associated with operation of the relay component that are propagated to the bus bar base via the bus bar terminal connection portion, and the bus bar base is sandwiched between the case member and the cover member via the vibration damping portion.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an electrical junction box. [Background technology]

[0002] The bus bar is housed in the housing of an electrical connection box such as a junction box, and electrically connects at least two components to be electrically connected. The bus bar is, for example, a plate-shaped conductive member press-formed using a metal plate as a base material, and has a terminal connection portion formed in the shape of a male tab to which the components to be electrically connected are directly or indirectly connected. An electrical connection box equipped with this type of bus bar is disclosed in Patent Document 1 listed below. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-259228 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the case of a bus bar, when the electrically connected component is a relay component that can be a vibration source, the vibration caused by the actuation of the relay component is transmitted to the terminal connection part, and the vibration propagates from the terminal connection part. In addition, since the bus bar is accommodated in the housing of the electrical connection box with some play (backlash), there is a risk of abnormal noise caused by the vibration of the bus bar. In addition, the bus bar may be electrically connected to the relay component via an intermediate terminal fitting, and in this case, the intermediate terminal fitting indirectly connects the male tab-shaped terminal connection part of the bus bar to the male tab-shaped terminal connection part of the relay component. In the case of a bus bar, when the intermediate terminal fitting physically and electrically connects the terminal connection part by using a spring force, it is sufficient that the intermediate terminal fitting absorbs and attenuates the vibration caused by the actuation of the relay component. However, there is a possibility that the vibration is amplified by the intermediate terminal fitting and transmitted to the terminal connection part.

[0005] SUMMARY OF THE PRESENT EMBODIMENTS In view of the above, an object of the present invention is to provide an electrical junction box capable of suppressing vibration of a bus bar. [Means for solving the problem]

[0006] The present invention comprises a bus bar having a flat bus bar base and a male tab-shaped bus bar terminal connection portion erected from the bus bar base, a relay component provided with a relay terminal connection portion, an intermediate terminal fitting that physically and electrically connects the bus bar terminal connection portion and also physically and electrically connects the relay terminal connection portion, and a housing that accommodates the bus bar, the relay component, and the intermediate terminal fitting, wherein the housing comprises a case member in which a bus bar accommodating chamber that accommodates the bus bar is formed, and a cover member that covers the case member together with the bus bar, and at least one of the bus bar and the housing is provided with at least one vibration damping portion that damps vibrations associated with driving of the relay component that are propagated to the bus bar base via the bus bar terminal connection portion, and the bus bar base is sandwiched between the case member and the cover member via the vibration damping portion. Effect of the Invention

[0007] The electrical junction box according to the present invention can attenuate vibrations caused by driving of the relay components and transmitted to the bus bar base via the bus bar terminal connection portion by the vibration attenuation portion provided on either the bus bar base or the cover member, thereby suppressing vibrations of the bus bar and the generation of abnormal noise caused by the vibrations. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is an exploded perspective view illustrating an electrical junction box according to an embodiment. [Diagram 2] FIG. 2 is a perspective view illustrating the electrical junction box according to the embodiment. [Diagram 3] FIG. 3 is a plan view showing the bus bar and the intermediate terminal metal fitting housed in the bus bar housing. [Figure 4]4 is a cross-sectional view of the periphery of the intermediate terminal metal fitting taken along the line X1-X1 in FIG. [Diagram 5] FIG. 5 is a diagram showing an example of a simulation analysis result of an equivalent radiation power level regarding a bus bar provided with a vibration damping portion. [Figure 6] FIG. 6 is a diagram showing another example of the simulation analysis result of the equivalent radiation power level regarding the bus bar when a vibration damping portion is provided on the cover member. [Figure 7] FIG. 7 is a diagram showing another example of the simulation analysis result of the equivalent radiation power level regarding the bus bar when a vibration damping portion of another type is provided on the cover member. [Figure 8] FIG. 8 is a plan view showing an example of a bus bar provided with a vibration damping portion. [Figure 9] FIG. 9 is a cross-sectional view taken along line X2-X2 of FIG. 8, showing a state in which the bus bar is sandwiched between the case member and the cover member. [Figure 10] FIG. 10 is a plan view showing a part of an example of a cover member provided with a vibration damping portion. [Figure 11] FIG. 11 is a cross-sectional view taken along line X3-X3 in FIG. 10, illustrating a state in which the bus bar is sandwiched between the case member and the cover member. [Figure 12] FIG. 12 is a plan view showing a part of an example of a cover member provided with a vibration damping portion of another embodiment. [Figure 13] FIG. 13 is a cross-sectional view taken along line YY in FIG. 12 rotated 90 degrees, and shows the state in which the bus bar is sandwiched between the case member and the cover member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an electrical junction box according to the present invention will be described in detail below with reference to the drawings. However, the present invention is not limited to the embodiment.

[0010] [Embodiment] One embodiment of an electrical junction box according to the present invention will be described with reference to FIGS.

[0011] Reference numeral 1 in Fig. 1 indicates an electrical connection box of this embodiment. This electrical connection box 1 is also called a junction box or the like, and electrically connects at least two electrical connection target components. This electrical connection box 1 includes a bus bar 10, a relay component 20 as an electrical connection target component, an intermediate terminal fitting 30 interposed between this bus bar 10 and the relay component 20, and a housing 40 that houses these (Figs. 1 and 2). In this electrical connection box 1, the relay component 20 is electrically connected to another electrical connection target component via the bus bar 10 and the intermediate terminal fitting 30 (Fig. 1).

[0012] The bus bar 10 is a conductive member formed into a plate shape from a conductive material such as a metal material. For example, the bus bar 10 is press-formed using a metal plate as a base material. The bus bar 10 has a flat base portion (hereinafter referred to as a "bus bar base portion") 11 and a male tab-shaped terminal connection portion (hereinafter referred to as a "bus bar terminal connection portion") 12 standing upright from the bus bar base 11 (FIGS. 1 and 3). The bus bar 10 shown here has a plurality of bus bar terminal connection portions 12, and a relay component 20 is electrically connected to one of the plurality of bus bar terminal connection portions 12 (hereinafter referred to as a "bus bar terminal connection portion 12A") via a relay terminal fitting 30 (FIGS. 1, 3, and 4).

[0013] Here, the relay component 20 includes a relay body 21 and a terminal connection portion (hereinafter referred to as a "relay terminal connection portion") 22 protruding from the relay body 21 (FIG. 1). The relay component 20 shown here is provided with the relay terminal connection portion 22 formed in the shape of a male tab.

[0014] The intermediate terminal fitting 30 physically and electrically connects the bus bar terminal connection portion 12A and has an electrical connection portion 31 inside a cylindrical terminal body 32 that physically and electrically connects the bus bar terminal connection portion 12A and the relay terminal connection portion 22 (FIG. 4). Therefore, the bus bar terminal connection portion 12A is electrically connected to the relay terminal connection portion 22 via the intermediate terminal fitting 30. The intermediate terminal fitting 30 shown here is press-formed using a metal plate as a base material.

[0015] The electrical connection portion 31 is flexed and deformed as the bus bar terminal connection portion 12A is inserted, and the reaction force (spring force) acts on the plane of the bus bar terminal connection portion 12A to sandwich the bus bar terminal connection portion 12A between the electrical connection portion 31 and the inner wall surface of the terminal body 32 (FIG. 4). Therefore, the bus bar terminal connection portion 12A is physically and electrically connected to the relay terminal fitting 30 by the spring force applied by the relay terminal fitting 30 to the plane of the bus bar terminal connection portion 12A. Furthermore, the electrical connection portion 31 is flexed and deformed as the relay terminal connection portion 22 is inserted, and the reaction force (spring force) acts on the plane of the relay terminal connection portion 22 to sandwich the relay terminal connection portion 22 between the electrical connection portion 31 and the inner wall surface of the terminal body 32 (FIG. 4). Therefore, the relay terminal connection portion 22 is physically and electrically connected to the relay terminal fitting 30 by the spring force applied by the relay terminal fitting 30 to the plane of the relay terminal connection portion 22. However, here, relay terminal connection portion 22 is sandwiched between bulging portion 33 that bulges out from the inner wall surface of terminal body 32 and electrical connection portion 31. Electrical connection portion 31 shown here is formed in a U-shape that is sandwiched between bus bar terminal connection portion 12A and relay terminal connection portion 22 inside the cylindrical terminal body 32, and applies reaction forces (spring forces) in opposite directions to bus bar terminal connection portion 12A and relay terminal connection portion 22.

[0016] As described above, the electrical junction box 1 includes a housing 40 that houses the bus bar 10, the relay component 20, and the relay terminal fitting 30. The housing 40 is made of an insulating material such as synthetic resin, and includes a case member 50 and a cover member 60 that are assembled together (FIG. 1).

[0017] An accommodation chamber (hereinafter referred to as the "bus bar accommodation chamber") 51 for accommodating the bus bar 10 is formed in the case member 50 (FIGS. 1 and 3). The bus bar 10 is accommodated in the bus bar accommodation chamber 51 with the intermediate terminal fitting 30 attached to the bus bar terminal connection portion 12A. Therefore, the bus bar accommodation chamber 51 also accommodates the intermediate terminal fitting 30.

[0018] The cover member 60 is attached to the case member 50 to cover the case member 50 together with the bus bar 10. The cover member 60 shown here covers the relay terminal fittings 30 together with the bus bar 10. Thus, the cover member 60 is formed with a through hole for inserting the relay terminal connecting portion 22 into the relay terminal fitting 30. In the cover member 60, a vertical wall surrounding the through hole is provided on the outer wall surface, and the space inside the vertical wall is used as an accommodation chamber 61 for the relay component 20 (hereinafter referred to as the "relay accommodation chamber") (Fig. 1).

[0019] In addition, a part of the vertical wall of the cover member 60 is cut out, and a holding portion (hereinafter referred to as "relay holding portion") 62 that holds the relay component 20 in the relay accommodating chamber 61 is provided in the cutout portion (FIG. 1). The relay holding portion 62 constitutes a so-called locking mechanism that hooks onto the claw portion 23 protruding from the outer wall surface of the relay body 21 to hold the claw portion 23 (FIG. 1).

[0020] In this housing 40, the case member 50 is not provided with a holding mechanism for holding the bus bar 10 in the bus bar accommodating chamber 51 (for example, a mechanism for holding the bus bar 10 in the bus bar accommodating chamber 51 by providing a through hole in the bus bar 10, providing a claw portion to be inserted into the through hole on a vertical wall of the bus bar accommodating chamber 51, and hooking the claw portion on the periphery of the through hole). However, in this housing 40, the bus bar 10 is indirectly held by the cover member 60 via the relay component 20 held by the cover member 60 and the relay terminal fitting 30 to which the relay terminal connecting portion 22 of the relay component 20 is fitted and connected.

[0021] In the relay component 20, a vibration is generated by switching between ON and OFF, and the vibration is transmitted to the relay terminal connection portion 22. The vibration caused by the driving of the relay component 20 is transmitted from the relay terminal connection portion 22 to the bus bar terminal connection portion 12A via the intermediate terminal fitting 30, and is then propagated from the bus bar terminal connection portion 12A to the bus bar base 11. Since the bus bar 10 is not fixed to the case member 50, when the vibration of the relay component 20 is propagated to the bus bar base 11, the vibration of the bus bar base 11 may cause abnormal noise. Even if the bus bar 10 in the bus bar accommodating chamber 51 is held in the case member 50 by the above-mentioned holding mechanism, the holding mechanism has a play (backlash) between the claw portion and the through hole, and therefore the bus bar 10 can move relative to the case member 50 in the bus bar accommodating chamber 51 by the amount of the play. Therefore, even if the bus bar 10 is held in the case member 50 by its holding mechanism, if vibrations of the relay component 20 are transmitted to the bus bar base 11, there is a risk that the vibrations of the bus bar base 11 will cause abnormal noise.

[0022] Therefore, in this embodiment, at least one of the bus bar 10 and the housing 40 is formed as described below to suppress the generation of abnormal noise caused by vibrations accompanying the driving of the relay component 20. Specifically, at least one of the bus bar 10 and the housing 40 is provided with at least one vibration damping section that damps vibrations accompanying the driving of the relay component 20 propagated to the bus bar base 11 via the bus bar terminal connection section 12A. Then, the bus bar base 11 is sandwiched between the case member 50 and the cover member 60 via the vibration damping section. As a result, in this electrical junction box 1, vibrations accompanying the driving of the relay component 20 propagated to the bus bar base 11 via the bus bar terminal connection section 12A are absorbed and damped by the vibration damping section, and the vibration of the bus bar base 11 can be suppressed.

[0023] As described in detail below, in the electrical junction box 1 illustrated here, a vibration damping portion is provided on either the bus bar base 11 or the cover member 60, and the bus bar base 11 is sandwiched between the case member 50 and the cover member 60 via this vibration damping portion.

[0024] The location of the vibration damping part is determined as follows. Here, the equivalent radiation power level for the conventional busbar 10conv is obtained by simulation analysis (double-dashed lines in Figs. 5 to 7). In this conventional busbar 10conv, a vibration damping part is not provided, and the relay component 20 is attached to the busbar terminal connection part 12A via the relay terminal fitting 30. As a result of the analysis, in the conventional busbar 10conv, vibration occurs near the busbar terminal connection part 12A in the busbar base 11 (i.e., near the input part of the vibration of the relay component 20 in the busbar base 11). Therefore, in the electrical connection box 1 of this embodiment, the vibration damping part is arranged so that the vicinity of the busbar terminal connection part 12A in the busbar base 11 (i.e., near the input part of the vibration of the relay component 20 in the busbar base 11) is sandwiched between the case member 50 and the cover member 60. In this example, vibration damping sections are provided in positions and in quantities that reduce the equivalent radiated power level at a specific frequency Fs (the frequency of vibration caused by driving the relay component 20).

[0025] First, the vibration damping portion provided on the bus bar base 11 will be described. Figures 8 and 9 show a bus bar 10A having a vibration damping portion 13 provided on the bus bar base 11. This vibration damping portion 13 is a spring-shaped portion that is pressed against the cover member 60 and sandwiches the bus bar base 11 between the case member 50 and the cover member 60 by a resilient force generated between the cover member 60 and the spring-shaped portion. This vibration damping portion 13 is a spring-shaped portion that protrudes toward the cover member 60 from a first flat surface 11a on the cover member 60 side of the bus bar base 11, and is formed in a double-supported beam shape that presses its middle portion against the cover member 60 (Figure 9). Here, a cover member 60A is used that has an opposing wall 63a disposed facing the bus bar base 11 with a gap therebetween, a standing wall 63b vertically extending from the opposing wall 63a toward the bus bar base 11, and an opposing wall (hereinafter referred to as the "adjacent opposing wall") 63c adjacent to the vibration damping section 13 via the standing wall 63b and closer to the bus bar base 11 than the opposing wall 63a, and adjacent to the vibration damping section 13 (FIG. 9). Thus, the vibration damping section 13 is a spring-shaped section that protrudes toward the adjacent opposing wall 63c from the first plane 11a on the adjacent opposing wall 63c side of the bus bar base 11, and is formed into a double-supported beam shape that presses its middle section against the adjacent opposing wall 63c. The vibration damping portion 13 presses an intermediate portion, which is a portion pressing against the cover member 60A, against the adjacent opposing wall 63c of the cover member 60A to generate a resilient force between the cover member 60A and the second flat surface 11b on the bottom surface 51a side of the busbar accommodating chamber 51 in the busbar base 11 against the bottom surface 51a. Thus, the busbar base 11 is sandwiched between the bottom surface 51a of the busbar accommodating chamber 51 and the adjacent opposing wall 63c of the cover member 60A via the vibration damping portion 13. In this example, the vibration damping portion 13 is provided at two locations in the busbar base 11, and vibration is damped at each location where the vibration damping portion 13 is provided. The solid line in FIG. 5 indicates the equivalent radiation power level of the busbar 10A provided with the vibration damping portion 13. In the busbar 10A, the equivalent radiation power level at a specific frequency Fs can be reduced more than that of a conventional busbar 10conv to which the vibration damping portion 13 is not applied.

[0026] Next, the vibration damping portion provided in the cover member 60 will be described. The bus bar 10 used here is formed in the same shape as the conventional bus bar 10conv. Figs. 10 and 11 show a cover member 60B provided with a vibration damping portion 64. This cover member 60B has an opposing wall 63a, a standing wall 63b, and an adjacent opposing wall 63c, just like the cover member 60A. The vibration damping portion 64 is a spring-shaped portion that is pressed against the bus bar base 11 and that sandwiches the bus bar base 11 between the case member 50 and the cover member 60B by a resilient force generated between the bus bar base 11 and the spring-shaped portion. This vibration damping portion 64 is a spring-shaped portion that protrudes from the adjacent opposing wall 63c of the cover member 60B toward the bus bar base 11, and is formed in a double-supported beam shape that presses its middle portion against the bus bar base 11 (Fig. 11). The vibration damping portion 64 presses its intermediate portion, which is a portion pressing against the busbar base 11, against the first plane 11a of the busbar base 11 to generate a resilient force between the busbar base 11 and the busbar base 11, and presses the second plane 11b of the busbar base 11 against the bottom surface 51a of the busbar accommodating chamber 51. Thus, the busbar base 11 is sandwiched between the bottom surface 51a of the busbar accommodating chamber 51 and the cover member 60B via the vibration damping portion 64. In this example, the vibration damping portion 64 is provided at two locations on the cover member 60B, and vibration is damped at each location of the busbar base 11 that the vibration damping portion 64 contacts. The solid line in FIG. 6 indicates the equivalent radiation power level of the busbar 10 when the vibration damping portion 64 is used. In the busbar 10, the equivalent radiation power level at the specific frequency Fs can be reduced more than that of a conventional busbar 10conv that does not use the vibration damping portion 64.

[0027] Next, another embodiment of the vibration damping portion provided in the cover member 60 will be described. The bus bar 10 used here is formed in the same shape as the conventional bus bar 10conv. Figs. 12 and 13 show a cover member 60C provided with a vibration damping portion 65. This cover member 60C has an opposing wall 63a and a standing wall 63b like the cover member 60A, but does not have an adjacent opposing wall 63c. Like the vibration damping portion 64, the vibration damping portion 65 is a spring-shaped portion that is pressed against the bus bar base 11 and sandwiches the bus bar base 11 between the case member 50 and the cover member 60C by a resilient force generated between the bus bar base 11 and the spring-shaped portion 65. However, the vibration damping portion 65 is a spring-shaped portion formed in a cantilever shape that presses a free end portion against the bus bar base 11 (Fig. 13). For example, in the cover member 60C, the vibration damping portion 65 is protruded from the wall surface of the standing wall 63b. The vibration damping section 65 has a cantilevered flexible section 65a protruding from the wall surface of the standing wall 63b and a pressing section 65b provided at a free end of the flexible section 65a and capable of pressing against the bus bar base 11 at a position where the assembly of the case member 50 and the cover member 60 is completed (FIGS. 12 and 13). The flexible section 65a is flexibly deformed in the direction of attaching / detaching the cover member 60C to / from the case member 50. The vibration damping section 65 presses the pressing section 65b, which is a pressing section for the bus bar base 11, against the first flat surface 11a of the bus bar base 11 to generate a resilient force between the bus bar base 11 and the pressing section 65b, and presses the second flat surface 11b of the bus bar base 11 against the bottom surface 51a of the bus bar accommodating chamber 51. Therefore, the busbar base 11 is sandwiched between the bottom surface 51a of the busbar accommodating chamber 51 and the cover member 60C via the vibration damping portion 65. In this example, the vibration damping portions 65 are provided at two locations on the cover member 60C, and vibration is damped at each location of the busbar base 11 with which the vibration damping portions 65 contact. The solid line in Fig. 7 indicates the equivalent radiation power level of the busbar 10 when the vibration damping portion 65 is used. In this busbar 10, the equivalent radiation power level at a specific frequency Fs can be reduced more than that of a conventional busbar 10conv that does not use the vibration damping portion 65.

[0028] As described above, the electrical junction box 1 of this embodiment can attenuate the vibration caused by the driving of the relay component 20, which is propagated to the bus bar base 11 via the bus bar terminal connection portion 12A, by the vibration attenuating portions 13, 64, 65 provided on either the bus bar base 11 or the cover member 60. Therefore, the electrical junction box 1 can suppress the vibration of the bus bar 10 (10A) and suppress the generation of abnormal noise caused by the vibration of the bus bar 10 (10A). Furthermore, in the electrical junction box 1, when the intermediate terminal fittings 30 absorb and attenuate the vibration caused by the driving of the relay component 20, the propagation of the vibration to the bus bar base 11 can be suppressed, so that the generation of abnormal noise caused by the vibration of the bus bar 10 (10A) can be further suppressed. On the other hand, in this electrical connection box 1, even if the intermediate terminal fittings 30 amplify the vibrations caused by the operation of the relay component 20, by providing vibration damping sections 13, 64, 65 at appropriate positions, the vibrations of the busbar 10 (10A) can be suppressed and abnormal noise caused by the vibrations can be suppressed.

[0029] In addition, since the vibration damping portion 65 has a cantilever shape, the degree of freedom in arranging the pressing portion (pressing portion 65b) against the bus bar base 11 is higher than in the case of a doubly supported beam shape. Therefore, by applying the cantilever-shaped vibration damping portion 65 to the electrical junction box 1, the bus bar base 11 can be sandwiched at a more appropriate position, thereby improving the effect of suppressing the generation of abnormal noise caused by vibration of the bus bar 10.

[0030] Furthermore, the electrical junction box 1 of this embodiment can suppress vibration of the bus bar 10 (10A), so that wear of the contacts between the bus bar terminal connection portion 12A and the intermediate terminal fitting 30 can also be suppressed. [Explanation of symbols]

[0031] 1 Electrical junction box 10,10A busbar 11 Busbar base 12A Busbar terminal connection 13,64,65 Vibration damping section 20 Relay parts 22 Relay terminal connection 30 Intermediate terminal fitting 40 Case 50 Case material 51 Bus Bar Containment Room 60, 60A, 60B, 60C Cover parts

Claims

1. a bus bar having a flat bus bar base and a male tab-shaped bus bar terminal connection portion erected from the bus bar base; a relay component provided with a relay terminal connection portion; a relay terminal fitting that physically and electrically connects the bus bar terminal connection portion and also physically and electrically connects the relay terminal connection portion; a housing that accommodates the bus bar, the relay component, and the relay terminal metal fitting; Equipped with the housing includes a case member having a bus bar accommodating chamber for accommodating the bus bar, and a cover member for covering the case member together with the bus bar, At least one of the bus bar and the housing is provided with at least one vibration damping portion that damps vibration caused by driving of the relay component and transmitted to the bus bar base via the bus bar terminal connection portion, The bus bar base is sandwiched between the case member and the cover member via the vibration damping portion.

2. 2. The electrical connection box according to claim 1, wherein the vibration damping portion is a spring-shaped portion provided at the bus bar base and pressed against the cover member to generate a resilient force between the cover member and the vibration damping portion, thereby sandwiching the bus bar base between the case member and the cover member.

3. 2. The electrical connection box according to claim 1, wherein the vibration damping portion is a spring-shaped portion provided on the cover member and pressed against the bus bar base to generate a resilient force between the cover member and the bus bar base, thereby sandwiching the bus bar base between the case member and the cover member.

4. 4. The electrical junction box according to claim 3, wherein the spring portion has a double-supported beam shape with a middle portion pressing against the bus bar base.

5. 4. The electrical junction box according to claim 3, wherein the spring portion has a cantilever shape with a free end portion pressing against the bus bar base.

6. 6. The electrical connection box according to claim 1, wherein the bus bar terminal connection portion is physically and electrically connected to the intermediate terminal fitting by a spring force applied by the intermediate terminal fitting to a flat surface of the bus bar terminal connection portion.

Images