JP7288002B2 - fastening structure - Google Patents

Description

The present invention relates to a fastening structure.

2. Description of the Related Art Conventionally, electric vehicles, such as electric vehicles and hybrid vehicles, which run by driving force of a motor have been known (for example, Patent Literature 1). An electric vehicle runs by driving a motor by transmitting electric power from a battery mounted thereon to the motor. A power control unit (PCU) appropriately controls the electric power supplied to the motor to drive the motor appropriately so that the electric vehicle runs.

Japanese Patent Application Laid-Open No. 2021-010270

An electric vehicle may have a configuration in which the battery is arranged in the rear part of the vehicle and the PCU is arranged in the front part of the vehicle. In such a case, in order to shorten the cable that electrically connects the battery and the PCU, the connector provided at the end of the cable is electrically connected to the connector on the PCU side provided at the rear of the PCU. A configuration in which they are arranged so as to be connected is conceivable.

However, if the connector is arranged at the rear of the PCU, the cable electrically connected to the connector will not be crushed by the PCU and the dash panel arranged behind the PCU in the event of a vehicle collision (accident). Therefore, it is necessary to arrange the cable so that it extends downward from the connector on the cable side connected to the connector on the PCU side, and take countermeasures against collision.

However, in this case, since the distance between the connector and the dash panel is short in the longitudinal direction of the vehicle and there is little space, the cable-side connector must be connected upward from the lower side of the PCU-side connector. Therefore, there has been a demand for improved workability during assembly.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a fastening structure for fastening a connector and a device such as a PCU with improved workability during assembly.

In order to achieve the above object, the present invention provides a fastening structure for fastening a connector (for example, a cable-side connector 61 described later) and a device (for example, a PCU 50 described later), wherein the connector has a connector-side screw hole (for example, , a connector-side screw hole 602 described later), the device has a device-side screw hole (for example, a device-side screw hole 502 described later) having a larger diameter than the connector-side screw hole, and the connector-side screw A fastening bolt (for example, a fastening bolt 65 to be described later) having a diameter that can be screwed into the hole, which passes through the device side screw hole from the device and is screwed into the connector side screw hole to connect the connector and the device. To provide a fastening structure provided with a fastening bolt for fastening a.

According to the present invention, since the device has the device-side screw hole with a larger diameter than the connector-side screw hole, the fastening bolt is screwed into the connector-side screw hole without being screwed into the device-side screw hole. The connector and the device can be fastened by making the connection. Therefore, the connector can be assembled from the upper side of the vehicle, and the connector can be detached from the device with a simple structure, so that the cost can be reduced and the workability during assembly is possible. It is possible to achieve a fastening structure in which the improvement in

The fastening structure is an extrusion bolt (for example, an extrusion bolt 55 described later) that cannot be inserted into the connector-side screw hole and that can be screwed into the device-side screw hole. and a push-out bolt that pushes out and removes the connector by being screwed into the device-side screw hole.

Therefore, by screwing the push-out bolt into the device-side screw hole, the connector can be pushed out and removed from the device. As a result, the connector can be removed from the device from the device side, and it is possible to provide a fastening structure that improves workability when removing the connector from the device during assembly.

The present invention also provides a fastening structure for fastening a connector (for example, a cable-side connector 61 to be described later) and a device (for example, a PCU 50 to be described later), wherein a fastening bolt (for example, a fastening bolt to be described later) is fixed to the connector. bolt 65A), and the device includes a through-hole (for example, a through-hole 504A described later) having a larger diameter than the fastening bolt and a device-side screw hole having a larger diameter than the through-hole (for example, a device-side a screw hole 502A) and a nut (for example, a nut 67A described later) having an outer diameter larger than that of the through-hole and smaller than that of the device-side screw hole, and the fastening bolt is the device-side screw. A fastening structure is provided in which the nut arranged in the hole is screwed through the through hole to fasten the connector and the device.

According to the present invention, since the fastening bolt can be fixed to the connector, the connector can be provided with the fastening bolt. Therefore, it is not necessary for an operator to assemble the connector while pressing it by hand, and it is possible to provide a fastening structure with improved assembling workability.

Then, the fastening structure is an extrusion bolt (for example, an extrusion bolt 55A described later) that cannot be inserted into the through hole and can be screwed into the device side screw hole, and when the connector is removed from the device, A push-out bolt that pushes out and removes the connector is provided by being screwed into the device-side screw hole.

Therefore, by screwing the push-out bolt into the device-side screw hole, the connector can be pushed out and removed from the device. As a result, the connector can be removed from the device from the device side, and it is possible to provide a fastening structure that improves workability when removing the connector from the device during assembly.

According to the present invention, it is possible to provide a fastening structure for fastening a connector and a device such as a PCU with improved workability during assembly.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows the engine room of the front part of a vehicle in which the fastening structure which concerns on 1st Embodiment of this invention is provided. FIG. 4 is an explanatory diagram showing the positional relationship among the device-side connector, PCU, DC cable, travel motor, and transmission of the fastening structure according to the first embodiment of the present invention; FIG. 2 is an explanatory diagram showing the positional relationship among a travel motor, a transmission, a PCU, and a dash panel in a front engine room of a vehicle in which the fastening structure according to the first embodiment of the present invention is provided; FIG. 4 is a cross-sectional view showing a state before the device-side connector and the cable-side connector are fastened together in the fastening structure according to the first embodiment of the present invention; FIG. 4 is a cross-sectional view showing a state in which a device-side connector and a cable-side connector are fastened together in the fastening structure according to the first embodiment of the present invention; FIG. 4 is a cross-sectional view showing a state in which the fastening bolt is removed and the push bolt is screwed together after the device-side connector and the cable-side connector are fastened in the fastening structure according to the first embodiment of the present invention; FIG. 4 is a cross-sectional view showing a state in which the push-out bolt pushes out the cable-side connector in the fastening structure according to the first embodiment of the present invention; FIG. 9 is a cross-sectional view showing a state before the device-side connector and the cable-side connector are fastened together in the fastening structure according to the second embodiment of the present invention; FIG. 8 is a cross-sectional view showing a state in which the device-side connector and the cable-side connector are fastened together in the fastening structure according to the second embodiment of the present invention; FIG. 8 is a cross-sectional view showing a state before the fastening bolt is removed and the push bolt is screwed after the device side connector and the cable side connector are fastened in the fastening structure according to the second embodiment of the present invention. FIG. 9 is a cross-sectional view showing a state in which a push-out bolt pushes out a cable-side connector in the fastening structure according to the second embodiment of the present invention;

Embodiments according to the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory diagram showing an engine room in the front part of a vehicle. FIG. 2 is an explanatory diagram showing the positional relationship among the equipment-side connector 51, the PCU 50, the DC cable 60, the travel motor 30, and the transmission 40. As shown in FIG. FIG. 3 is an explanatory diagram showing the positional relationship among the travel motor 30, the transmission 40, the PCU 50, and the dash panel 12 in the engine room at the front of the vehicle.

In each figure, arrow Fr indicates the front direction of the vehicle, arrow Rr indicates the rear direction of the vehicle, arrow Up indicates the upper direction of the vehicle, arrow L indicates the left direction in the vehicle width direction, and arrow R indicates the right direction in the vehicle width direction. indicates In addition, in each figure, illustration of parts is appropriately omitted for convenience of explanation.

As shown in FIG. 1, a vehicle body front portion 10 having an engine room of a vehicle includes a pair of left and right front side frames 11 and the like. The pair of left and right front side frames 11 are provided on the left and right sides in the vehicle width direction so as to extend in the longitudinal direction of the vehicle body. The pair of left and right front side frames 11 are respectively connected to left and right rear portions of bumper beams (not shown) via bumper beam brackets (not shown) provided at the front ends of the front side frames 11 .

A dash panel 12 is provided at the rear of the front side frame 11 so as to face in the front-rear direction and partition the engine room and the passenger compartment in the front-rear direction. On the front side of the dash panel 12, an engine 20, a travel motor 30, a transmission 40, and a power control unit (hereinafter referred to as "PCU") 50, which is an electric power control device, are provided. The engine 20 , the traveling motor 30 and the transmission 40 are suspended from the front side frame 11 . The PCU 50 is arranged above the travel motor 30 and the transmission 40, as shown in FIGS.

Engine 20 is driven based on a command from an engine electronic control unit (not shown). Traveling motor 30 generates driving force with electric power supplied from a high-voltage battery (not shown) via PCU 50 , and the driving force rotates wheels (not shown) via transmission 40 . The traction motor 30 supplies electric power generated by regeneration to a high-voltage battery (not shown) or the like located at the rear of the vehicle through a device-side connector 51, a cable-side connector 61, and a DC cable 60 located in the PCU 50. output to

Next, details of the fastening structure will be described. FIG. 4 is a cross-sectional view showing a state before the device-side connector 51 and the cable-side connector 61 are fastened in the fastening structure. FIG. 5 is a cross-sectional view showing a state in which the device-side connector 51 and the cable-side connector 61 are fastened in the fastening structure. FIG. 6 is a cross-sectional view showing a state in which the fastening bolt 65 is removed after the device-side connector 51 and the cable-side connector 61 are fastened in the fastening structure, and the push bolt 55 is screwed. FIG. 7 is a cross-sectional view showing a state in which the pushing bolt 55 pushes out the cable side connector 61 in the fastening structure.

The fastening structure consists of a cable-side connector 61 (see FIG. 4, etc.) provided at the end of a DC cable 60 that supplies power from a high-voltage battery (not shown), and a device-side connector provided on the rear side of the PCU 50 as a device. 51 is a fastening structure for fastening.

As shown in FIG. 4 and the like, the device-side connector 51 is mounted on the housing 501 of the PCU 50 so that the terminal portion of the device-side connector 51 opens downward in the vehicle, more specifically, obliquely downward on the rear side. fixed and supported by Therefore, the terminal portion of the cable-side connector 61 is inserted into the terminal portion of the device-side connector 51 toward the upper side of the vehicle, and the terminals are electrically connected to each other.

In a portion adjacent to the portion of the housing 501 to which the device-side connector 51 is fixed, a device-side screw hole 502, which is a through hole penetrating the housing 501 in parallel with the axial direction of the device-side connector 51, is formed. ing.

The cable-side connector 61 is held so as to be surrounded by a connector housing 601 . A portion of the connector housing 601 has a fastened portion 603 extending parallel to the portion of the housing 501 in which the device-side screw hole 502 is formed. A connector-side screw hole 602, which is a through hole penetrating the fastened portion 603, is formed parallel to the axial direction.

The device-side screw hole 502 has a larger diameter than the connector-side screw hole 602 . As will be described later, when the terminal portions of the cable-side connector 61 are inserted into the terminal portions of the device-side connector 51 and the terminals are electrically connected, the device-side screw holes 502 and the connector-side screw holes 602 are It has a positional relationship of being coaxially arranged.

A fastening bolt 65 having a diameter that can be screwed into the connector-side screw hole 602 is screwed into the connector-side screw hole 602 when the cable-side connector 61 is connected to the PCU 50 . Since the diameter of the fastening bolt 65 is smaller than the diameter of the device-side screw hole 502 , when the fastening bolt 65 is inserted into the device-side screw hole 502 , it is not screwed together. The device-side screw hole 502 having a larger diameter than the connector-side screw hole 602 can be screwed into the device-side screw hole 502 when the cable-side connector 61 is removed from the device-side connector 51, and can be inserted into the connector-side screw hole 602. A push bolt 55 (see FIG. 6, etc.) having a diameter that cannot be screwed.

Next, fastening of the cable-side connector 61 to the device-side connector 51 of the PCU 50 will be described.
First, as indicated by arrow A in FIG. It is made to approach the body 501 . Then, the terminal portion of the cable-side connector 61 is inserted into the terminal portion of the device-side connector 51 to electrically connect the terminals together, and the fastened portion 603 is brought into contact with the housing 501 or faces in close proximity. Let

Next, the fastening bolt 65 is inserted into the device side screw hole 502 as indicated by arrow B in FIG. . As a result, the to-be-fastened portion 603 is fastened and fixed to the housing 501 in a state in which the terminals of the device-side connector 51 and the terminals of the cable-side connector 61 are electrically connected. When the fastened portion 603 is fastened to the housing 501 , the diameter of the fastening bolt 65 is smaller than the diameter of the device-side screw hole 502 , so the fastening bolt 65 does not screw into the device-side screw hole 502 . not passed through.

Next, removal of the cable-side connector 61 fastened to the device-side connector 51 of the PCU 50 will be described.
First, the fastening bolt 65 is loosened and removed from the state in which the fastening bolt 65 is screwed into the connector-side screw hole 602 as shown in FIG. Next, as indicated by arrow C in FIG.

When the push bolt 55 continues to be screwed and passes through the device-side screw hole 502 , the tip of the push bolt 55 comes into contact with the fastened portion 603 . As the push bolt 55 is further screwed in, the tip of the push bolt 55 pushes the fastened portion 603 downward as indicated by arrow D in FIG. 603 moves away from housing 501 toward the lower side of housing 501 . Along with this, the cable-side connector 61 is pushed downward and separated from the device-side connector 51, and the terminals of the device-side connector 51 and the terminals of the cable-side connector 61 are electrically connected. It is released and the cable side connector 61 is removed from the device side connector 51 .

According to this embodiment, the following effects are obtained.
In this embodiment, the cable-side connector 61 in the fastening structure for fastening the cable-side connector 61 and the PCU 50 has a connector-side screw hole 602, and the PCU 50 has a device-side screw hole having a diameter larger than the connector-side screw hole 602. 502, and has a diameter that allows it to be screwed into the connector-side screw hole 602. The fastening bolt 65 passes through the device-side screw hole 502 from the PCU 50 and is screwed into the connector-side screw hole 602 to connect the cable-side connector 61 and the PCU 50. A fastening bolt 65 is provided to fasten the .

As a result, since the PCU 50 has the device-side screw hole 502 with a diameter larger than the connector-side screw hole 602 , the fastening bolt 65 is not screwed into the device-side screw hole 502 , and the connector-side screw hole 602 is screwed into the PCU 50 . The cable side connector 61 and the PCU 50 can be fastened by screwing them together. Therefore, the cable-side connector 61 can be assembled from the upper side of the vehicle, and the cable-side connector 61 can be detached from the device with a simple structure, so that the cost can be reduced. , it is possible to provide a fastening structure that improves workability during assembly.

The fastening structure is a push bolt 55 that cannot be inserted into the connector-side screw hole 602 and that can be screwed into the device-side screw hole 502 . It has an extrusion bolt 55 that can be removed by pushing out the cable side connector 61 by being screwed into it.

Accordingly, by screwing the push-out bolt 55 into the device-side screw hole 502, the cable-side connector 61 can be pushed out from the PCU 50 and removed. As a result, the cable-side connector 61 can be removed from the PCU 50 from the side of the PCU 50 positioned above the cable-side connector 61, and the workability when removing the cable-side connector 61 from the PCU 50 during assembly. It is possible to achieve a fastening structure in which the improvement in

Next, a second embodiment of the invention will be described. In the fastening structure according to the second embodiment, the fastening bolt 65A is fixed to the fastening portion 603A, and the housing 501A has the through hole 504A. Different from structure. Note that the device-side connector and the cable-side connector in the second embodiment are the same as the device-side connector 51 and the cable-side connector 61 in the first embodiment. are also omitted.

FIG. 8 is a sectional view showing a state before the device side connector 51 (see FIG. 4 etc.) and the cable side connector 61 (see FIG. 4 etc.) are fastened in the fastening structure. FIG. 9 is a cross-sectional view showing a state in which the device-side connector 51 and the cable-side connector 61 are fastened in the fastening structure. FIG. 10 is a sectional view showing a state before the fastening bolt 65A is removed and the push bolt 55A is screwed after the device side connector 51 and the cable side connector 61 are fastened in the fastening structure. FIG. 11 is a cross-sectional view showing a state in which the push bolt 55A pushes out the cable side connector 61 in the fastening structure.

As shown in FIG. 8 and the like, the housing 501A is formed with a through hole configured by connecting the device side screw hole 502A and the through hole 504A. The upper portion of the through-hole is configured with a device-side screw hole 502A into which the push bolt 55A can be screwed, and the lower portion of the through-hole is configured with a through-hole 504A. Through hole 504A has a larger diameter than fastening bolt 65A.

The device side screw hole 502A has a larger diameter than the through hole 504A. As will be described later, when the terminal portion of the cable-side connector 61 is inserted into the terminal portion of the device-side connector 51 and the terminals are electrically connected, the device-side screw hole 502A, the through hole 504A, and the connector side It has a coaxial positional relationship with the screw hole 602A.

The extrusion bolt 55A and the nut 67A screwed onto the fastening bolt 65A cannot be inserted into the through hole 504A. The nut 67A has a larger outer diameter than the through hole 504A and a smaller outer diameter than the device side screw hole 502A. Therefore, the nut 67A can be inserted into the device side screw hole 502A.

A fastening bolt 65A is inserted upward from the bottom into the connector-side screw hole 602A formed in the fastened portion 603A, and the fastening bolt 65A is formed around the upper opening of the connector-side screw hole 602A. It is screwed into the internal thread of the inner peripheral surface of the C-ring 66A provided by fitting into the recessed portion. As a result, the fastening bolt 65A is fixed to the fastening portion 603A. The cable-side connector 61 is fastened to the device-side connector 51 of the PCU by screwing the fastening bolt 65A into the nut 67A inserted into the device-side screw hole 502A. When the fastened portion 603A is fastened to the housing 501A, the diameter of the fastening bolt 65A is smaller than the diameter of the through hole 504A. It is considered to be in a state where it is passed without touching the part.

Next, fastening of the cable-side connector 61 to the device-side connector 51 of the PCU will be described.
First, the cable-side connector 61 (see FIG. 4, etc.) is brought close to the device-side connector 51 (see FIG. 4, etc.) from below the device-side connector 51, and the fastened portion 603A is moved below the housing 501A. , it approaches the housing 501A. In addition, the nut 67A is inserted into the device side screw hole 502A from the upper opening of the device side screw hole 502A to form a portion where the device side screw hole 502A and the through hole 504A are connected. Place it on the stepped part of the

Next, the fastening bolt 65A is inserted into the through hole 504A. Then, the terminal portions of the cable-side connector 61 are inserted into the terminal portions of the device-side connector 51 to electrically connect the terminals. As a result, the cable-side connector 61 is connected to and supported by the device-side connector 51 .

In this state, the operator who performs fastening screws the nut 67A onto the tip of the fastening bolt 65A without supporting the cable-side connector 61 by hand. As a result, the tip of the fastening bolt 65A is positioned in the device side screw hole 502A by screwing the nut 67A through the through hole 504A. As a result, the to-be-fastened portion 603A is fastened and fixed to the housing 501A while the terminals of the device-side connector 51 and the terminals of the cable-side connector 61 are electrically connected.

Next, removal of the cable-side connector 61 fastened to the device-side connector 51 of the PCU 50 will be described.
First, as shown in FIG. 9, the nut 67A is loosened and removed from the state where the tip of the fastening bolt 65A is screwed into the nut 67A. Next, as indicated by an arrow E in FIG. 10, the push bolt 55A is screwed into the device side screw hole 502A.

As the pushing bolt 55A is screwed in, the tip of the pushing bolt 55A comes into contact with the tip of the fastening bolt 65A. When the pushing bolt 55A is further screwed in, as shown in FIG. 11, the pushing bolt 55A pushes the fastening bolt 65A downward, and the fastened portion 603A moves away from the housing 501A to the lower side of the housing 501A. go. Along with this, the cable-side connector 61 is pushed downward and separated from the device-side connector 51, and the terminals of the device-side connector 51 and the terminals of the cable-side connector 61 are electrically connected. It is released and the cable side connector 61 is removed from the device side connector 51 .

According to this embodiment, the following effects are obtained.
In this embodiment, the fastening structure for fastening the cable-side connector 61 and the PCU 50 includes a fastening bolt 65A fixed to the cable-side connector 61, and the PCU 50 includes a through hole 504A having a larger diameter than the fastening bolt 65A and a through hole 504A. A device-side screw hole 502A having a diameter larger than that of the hole 504A and a nut 67A having an outer diameter larger than that of the through-hole 504A and smaller than that of the device-side screw hole 502A. The cable-side connector 61 and the PCU 50 are fastened by threading the through hole 504A into the nut 67A arranged in the hole 502A.

As a result, the fastening bolt 65A can be fixed to the cable-side connector 61, so that the cable-side connector 61 can be provided with the fastening bolt 65A. It is possible to provide a fastening structure that eliminates the need for assembly and improves assembly workability.

The fastening structure is a push bolt 55A that cannot be inserted into the through hole 504A and that can be screwed into the device side screw hole 502A. It has an extrusion bolt 55A that can be removed by pushing out the cable side connector 61 by being combined.

As a result, the cable-side connector 61 can be pushed out from the PCU 50 and removed by screwing the push-out bolt 55A into the device-side screw hole 502A. As a result, the cable-side connector 61 can be removed from the PCU 50 from the PCU 50 side, making it possible to provide a fastening structure that improves workability when removing the cable-side connector 61 from the PCU 50 during assembly. Become.

The present invention is not limited to the above-described embodiments, and includes modifications, improvements, etc. within the scope of achieving the object of the present invention.
For example, in this embodiment, the device is the PCU 50, but it is not limited to this.
Further, in the present embodiment, the cable-side connector 61 is positioned below the device-side connector 51, but the configuration is not limited to this. For example, the cable-side connector may be positioned above the device-side connector. good.
In addition, in this embodiment, the device-side screw hole 502 and the connector-side screw hole 602 have a coaxial positional relationship, and the device-side screw hole 502A, the through-hole 504A, and the connector-side screw Although it has a coaxial positional relationship with the hole 602A, it is not limited to this configuration. For example, the fastening bolt 65 may be inserted into the device-side screw hole 502, and the fastening bolt 65A may be inserted into the through-hole 504A and the device-side screw hole 502A.

50 PCU (equipment)
55, 55A... Extrusion bolt 61... Cable side connector (connector)
65, 65A...Fastening bolt 67A...Nuts 502, 502A...Device side screw hole 504A...Through hole 602...Connector side screw hole

Claims (4)

A fastening structure for fastening a connector and a device,
The connector has a connector-side screw hole,
The device has a device-side screw hole having a diameter larger than that of the connector-side screw hole,
A fastening bolt having a diameter that can be screwed into the connector-side screw hole, the fastening bolt passing through the device-side screw hole from the device and being screwed into the connector-side screw hole to fasten the connector and the device. fastening structure. A push bolt that cannot be inserted into the connector-side screw hole and can be screwed into the device-side screw hole, and is screwed into the device-side screw hole when the connector is removed from the device. 2. The fastening structure according to claim 1, further comprising an extrusion bolt that can be removed by pushing out the connector. A fastening structure for fastening a connector and a device,
A fastening bolt fixed to the connector,
Said device comprises:
a through hole having a diameter larger than that of the fastening bolt;
a device-side screw hole having a larger diameter than the through hole;
a nut having an outer diameter larger than that of the through-hole and smaller than that of the device-side screw hole;
A fastening structure for fastening the connector and the device by screwing the fastening bolt through the through-hole into the nut arranged in the device-side screw hole. A push bolt that cannot be inserted into the through-hole and can be screwed into the device-side screw hole, wherein the connector is screwed into the device-side screw hole when the connector is removed from the device. 4. The fastening structure according to claim 3, comprising an extruded and removable extruded bolt.

Images