Connector unit for control device

Abstract

The present subject matter generally relates to a connector unit (100) for a control device. The connector unit (100) is configured to accommodate a plurality of power lines (201) to be connected to a corresponding control device to establish an electrical connection between the control device and its corresponding circuit components. The connector unit includes a connector base (101) for holding two or more power lines, and two or more corresponding terminal slots (102) for receiving corresponding terminal members (202) of the two or more power lines, wherein each corresponding terminal slot receives a corresponding terminal member of each power line. According to one embodiment, the connector base (101) extends integrally to form the corresponding terminal slots (102). The connector unit accommodating two or more power lines (201) can be used directly to establish an electrical connection with any control device without the need for separate connections.

Description

Technical Field

[0001] The present subject matter generally relates to a connector unit, and particularly, but not exclusively, to a connector unit for establishing an electrical connection with an electronic device including a control device. Background Art

[0002] Most modern electrical appliances and consumer products, including automobiles, typically include a control device, or electronic control unit. These devices are typically embedded systems that control one or more electrical systems or subsystems within the appliance. Most appliances typically include multiple control devices, and the complexity involved in establishing electrical connections for these multiple control devices is inherently challenging. For example, ensuring the security of control devices connected to numerous power lines carrying high currents is particularly challenging.

[0003] Hybrid and electric vehicles are typically equipped with multiple control devices, including at least one electronic control unit (ECU) that controls one or more of the vehicle's subsystems. For example, hybrid and electric vehicles often include a motor controller, which converts DC power from the battery unit into AC power to drive the multi-phase motor unit / motor controller. Both DC and AC power lines need to be connected to the motor controller using connectors. Typically, the power lines are directly connected to the motor controller using separate connectors for each line. However, using separate connectors creates a high risk of incorrect assembly of the power lines, resulting in the power lines being routed to the incorrect terminals during manufacturing and repair. Furthermore, using connectors to connect the power lines to the controller terminals makes them susceptible to vibration and movement, potentially causing the power lines to brush against each other, potentially leading to a short circuit and potentially posing a fire hazard. Furthermore, routing the power lines to the motor controller terminals requires significant assembly time. Furthermore, maintaining connections and ensuring stable wiring during the assembly process presents challenges. Control units typically have multiple connections, including input and output signals or currents. Multiple connector assembly designs known in the art require significant operator time to secure each connection individually, increasing the risk of confusion, which is highly undesirable, especially for power lines, which are prone to short circuits, significant damage, and fire. In vehicles, particularly saddle-type two-wheeled vehicles, limited layout space presents a constant challenge. Therefore, packaging one or more controllers to maintain a compact vehicle layout while still ensuring ample practical space for the user presents a conflicting requirement. For ease of manufacturing, it is tempting to orient the controller unit in an upward-facing orientation, which allows the operator to assemble the power lines, other wiring harnesses, and connectors with less difficulty. However, this orientation consumes valuable practical space, making it a compromise solution. While arranging the controller unit in a vertical orientation minimizes space requirements, it makes connecting the power lines / wiring harnesses and connectors nearly impossible. Therefore, there is a need for an improved solution for connecting the wiring harness and connectors to the controller that overcomes all of the aforementioned issues, as well as other problems with the known technology.

[0004] Therefore, there is a need to provide an alternative device for establishing electrical connections between electronic devices used in various electrical appliances, while ensuring safety of the appliances, ease of assembly, and the ability to be packaged in a compact layout. Furthermore, there is a need to ensure easy access to power cables to be connected to the electronic devices, thereby reducing the overall time required to establish electrical connections between the electronic devices and corresponding electrical components and improving the overall productivity of manufacturing various electrical appliances. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] The detailed description is described with reference to the accompanying drawings. Throughout the drawings, the same reference numerals are used to refer to similar features and components.

[0006] Figure 1 is a top view of a connector unit according to an embodiment of the present subject matter, depicting components of the connector arrangement.

[0007] Figure 2 is an exploded perspective view of a connector unit according to an embodiment of the present subject matter, wherein a connector guide-cum-cover member is mounted to the connector unit.

[0008] Figure 3 is an exploded view depicting the assembly of a power cord and a connector guide-cum-cover member to a connector unit during shipping of the connector member according to an embodiment of the present subject matter.

[0009] Figure 4 is a left perspective view of a two-wheeled vehicle according to a first embodiment of the present subject matter, which includes a connector unit.

[0010] Figure 5 is an exploded view depicting the arrangement of a power cord and a connector guide-cum-cover member relative to a connector unit before the connector unit is assembled to a control device according to an embodiment of the present subject matter. DETAILED DESCRIPTION

[0011] Most modern electrical appliances / products (including automobiles) typically include one or more control devices for controlling one or more systems or subsystems of the corresponding appliance / product. Hybrid and electric vehicles are typically equipped with multiple control devices, including at least one electronic control unit (ECU), which controls one or more of the vehicle's subsystems. For example, hybrid and electric vehicles often include a motor controller (MC) that converts DC power from the battery to AC power to drive a multi-phase motor unit. The MC receives multiple power lines, including AC and DC power lines, which are connected to corresponding terminals on the MC via standard connectors. Often, each AC and DC power line is connected via a separate connector. Consequently, multiple connectors are used to connect the multiple power lines to the MC. However, while using connectors helps connect the power lines to the MC, they do not prevent the power lines from moving due to vehicle vibration. Movement of the power lines due to vehicle vibration, shock loads, and other factors can cause friction between them, leading to short circuits. Furthermore, this movement can loosen the connectors, leading to arcing at the contact points between the connectors and the power lines, posing a safety risk to the hybrid / electric vehicle. Furthermore, the use of separate connectors creates a high risk of incorrect assembly with power lines routed to the wrong terminals, a situation exacerbated by the number of lines to be connected. Another disadvantage associated with using separate connectors to connect the power lines to the motor control unit is the increased assembly time, as workers on the assembly line must individually connect each power line to the connector to establish electrical connections between the motor control unit and the battery unit and motor unit. Accessing the corresponding terminals on the motor control unit to connect the power lines is particularly difficult when the motor control unit is mounted vertically in the vehicle, where the corresponding terminals point to the side and away from the center of the vehicle. While such a configuration may be preferable to maintain a compact layout, it makes the assembly extremely difficult and impractical. Furthermore, even once the power lines are connected to the corresponding terminals on the motor control unit, they still hang vertically downward from the motor control unit, subjecting them to undesirable strain. Therefore, there is a need for an alternative configuration for establishing electrical connections between any control device and its corresponding power lines.

[0012] In view of the above and other purposes, the present subject matter provides a stand-alone connector unit for accommodating a plurality of power lines to be connected to a corresponding control device, for establishing an electrical connection between the control device and its corresponding circuit components. The connector unit includes a connector base for holding two or more power lines, and two or more corresponding terminal slots for receiving corresponding terminal members of the two or more power lines, wherein each corresponding terminal slot receives the corresponding terminal member of each power line. According to one embodiment, the connector base is extended integrally to form the corresponding terminal slots. In particular, the corresponding terminal slots are formed so that each terminal slot has a predetermined distance from an adjacent terminal slot, so that each power line in the two or more power lines is kept at a predetermined distance from the adjacent power line. Therefore, it is ensured that all power lines to be connected to the control device are kept away from each other. Further, in order to prevent each power line in the two or more power lines from moving, the connector unit includes a plurality of retaining arms, wherein a pair of retaining arms in the plurality of retaining arms each extend on either side of each terminal slot in the two or more corresponding terminal slots. When each of the two or more power lines connected to the terminal member is located in each of the two or more corresponding terminal grooves, a pair of crimping terminal arms is formed in each terminal member attached to each power line, which press against each pair of retaining arms. Therefore, each power line is fixed in each of the two or more corresponding terminal grooves of the connector unit and is prevented from moving even due to vehicle vibration. The connector unit that holds the two or more power lines is assembled directly on the control device without the need to individually connect each power line to the corresponding terminal of the control device. Therefore, the assembly time required to connect the power lines to the control device is significantly reduced. According to one aspect of the present invention, the connector unit is used to pre-configure all the connected power lines as subassemblies in their desired positions before they are assembled on a vehicle or product. This greatly enhances the operator's freedom to complete the assembly of the power lines in the pseudo-substation in any desired and comfortable orientation, regardless of the final orientation of the assembly on the vehicle.

[0013] According to one aspect of the present invention, each of the two or more power lines drawn from the wiring harness and housed in the connector unit is configured to have a different length than the other power lines, so that each power line, along with its terminal member, can only be positioned in its corresponding terminal slot and not in other terminal slots. This ensures that the power lines cannot be incorrectly assembled in the connector unit.

[0014] According to another aspect of the present invention, a connector unit is provided with a connector guide / cover member having a plurality of ribs formed on one surface of the connector guide / cover member. To ensure that two or more power lines are retained in their corresponding terminal slots, the connector unit, as a standalone component, is pre-locked with the connector guide / cover member on its bottom side before the final assembly of the connector unit is assembled above a control device. The two or more corresponding terminal slots of the corresponding terminal members holding the two or more power lines are positioned above the plurality of ribs formed in the connector guide / cover member. Providing the connector guide / cover member on the bottom side of the connector unit ensures that the two or more power lines to be connected to the control device remain in their positions even during transport of the connector unit within an assembly line or from a separate subassembly station to the assembly line. Furthermore, when the connector unit holding the two or more power lines is assembled above the control device, the connector guide / cover member is unlocked from the bottom side of the connector unit. Furthermore, once the connector unit is assembled, the connector guide / cover member is inverted or flipped with its second surface facing the top surface of the connector unit and locked against the top surface of the connector unit. Thus, the guide performs a dual function as a guide during subassembly and as a cover after assembly into the vehicle. When the connector guide serves as a cover member on the top surface of the connector unit, it helps prevent dust and water from entering the corresponding terminal members of the two or more power lines. Thus, the connector guide / cover member functions as a guide when locked against the bottom side of the connector unit, and as a cover when locked against the top surface of the connector unit.

[0015] Thus, the design and construction of the connector unit according to the present invention ensures that the electrical connection of the power line to any control device can be safely achieved without hindering the ease of establishing such an electrical connection. The absence of a separate coupling to connect the power line to the control device ensures ease of assembly and ease of establishing the electrical connection for the control device. Consequently, the assembly time involved in establishing the electrical connection for the control device is also minimized.

[0016] Various other features and advantages of the present invention are described in detail below with reference to the accompanying drawings.In the drawings, like reference numerals generally indicate identical, functionally similar, and / or structurally similar elements.

[0017] Figure 1 is a top view of a connector unit 100 according to an embodiment of the present subject matter. According to one aspect of the present subject matter, and as Figure 1As can be seen in FIG, the connector unit 100 includes a connector base 101 for holding two or more power lines 201 leading out of a wiring harness 200. In other words, the connector unit 100 is configured to accommodate or house at least a portion of a wiring harness, wherein the wiring harness includes a power supply to be electrically connected to the control device 400 (in FIG. Figure 4 ) are two or more power lines 201. In the present embodiment, the control device 400 is a motor control unit. The control device 400 according to the present embodiment receives five power lines for establishing electrical connections with a battery unit (not shown) and a motor unit (not shown). In particular, according to the present embodiment, the control device 400 receives two power lines and three output power lines, wherein the two power lines include a positive line and a negative line from a battery unit, and the three output power lines are used to power the motor unit. Therefore, in the present embodiment, five power lines will be connected to the control device. It can be seen that each of the two or more power lines 201 is respectively connected to a corresponding terminal member 202. In the present embodiment, the corresponding terminal member 202 of each power line 201 is annular. Alternatively, the contour of the terminal member can have a different geometric shape.

[0018] In order to accommodate or position each corresponding terminal member 202 assembled to each power line 201, the connector unit 100 includes a corresponding terminal groove 102, wherein each corresponding terminal groove 102 receives the corresponding terminal member 202 of each power line, and wherein the geometric profile of the corresponding terminal groove 102 matches the profile of the terminal member. In particular, according to one embodiment, the connector base 101 of the connector unit 100 extends integrally to form two or more corresponding terminal grooves 102. In particular, the corresponding terminal grooves 102 are formed in a manner such that each terminal groove 102 has a predetermined distance from an adjacent terminal groove 102, thereby maintaining a predetermined distance between each power line 201 and the adjacent power line. Further, in another embodiment, and as can be seen, the connector unit 100 integrally includes a plurality of retaining arms 103, wherein a pair of retaining arms of the plurality of retaining arms 103 each extend on either side of each terminal groove in the two or more corresponding terminal grooves 102. When each of the two or more power lines 201 connected to the terminal members is located in each of the two or more corresponding terminal grooves 102, a pair of crimping terminal arms 202a ( Figure 3) presses against each pair of retaining arms. Thus, each power line is secured in each of the two or more corresponding terminal slots 102 of the connector unit 100 and prevented from moving even due to vehicle vibrations. Furthermore, in another embodiment, a plurality of cable ties 104 are provided on one side along the outer perimeter of the connector base 101, with at least one cable tie securing each of the two or more power lines 201. Providing multiple cable ties 104 also helps prevent the power lines from moving. Furthermore, to further ensure that the two or more power lines 201 are not damaged even during transport, embodiments of the present subject matter lock the connector unit 100 with a connector guide and cover member 105. When the assembly is oriented at an angle to the ground, further embodiments incorporating additional cable ties and / or retaining arms can be more advantageously implemented to provide a more secure connection, thereby achieving a strong, reliable, and secure electrical connection that is easy to assemble.

[0019] Figure 2 An exploded perspective view depicts a connector unit and a connector guide / cover member according to an embodiment of the present subject matter. As can be seen, the connector guide / cover member 105 includes a plurality of ribs 106 formed along the length of one surface of the connector guide / cover member 105. Furthermore, the connector guide / cover member 105 integrally includes a plurality of guides 107, each formed at the base of each of the plurality of ribs 106, with a portion of each guide extending laterally outward from each of the plurality of ribs 106 in the form of arms 107a. While the guides 107 ensure precise positioning of the connector within the subassembly station, the height dimension of the arms 107a is smaller than that of the guides 107, thereby enabling offset placement of the connector on the connector unit. This is because the connector is typically flat and thin relative to the thick, round power line. This ensures that the connector remains in its nominal position, which deviates from any of the power line's circumferential contact surfaces, and further facilitates removal of the guide member from the connector, allowing it to be flipped over to serve as a cover member. Without arms 107a, the connector may become stuck on the guide, making it difficult for an operator to quickly flip the guide / cover member from one side to the other. In another embodiment, the guide / cover member is provided with additional ribs to couple with locking openings on the connector unit when it is flipped over to function as a cover member. According to another embodiment, the additional ribs on the guide / cover member are also provided with arms similar to those on the guide 107a and help maintain offset abutting contact between the cover and the connector unit. Further, the connector guide / cover member 105 includes two or more locking arms 108 formed along its peripheral edge for locking with corresponding locking lugs 110 formed along corresponding peripheral edges of the connector base 101.

[0020] Figure 3 An exploded perspective view is shown to illustrate the assembly orientation of the connector guide and cover with the connector unit. Wiring harness 200 includes two or more power lines 201 to be connected to control device 500. During transportation of wiring harness 200, two or more power lines 201 are housed in connector unit 100 by being arranged in two or more corresponding terminal slots 102. To ensure that the corresponding terminal members of each of the two or more power lines 201 are not damaged, connector unit 100 is locked with connector guide and cover member 105 on its bottom side. Specifically, during assembly, the surface of connector guide and cover member 105, which includes multiple ribs 106, faces the bottom side of connector unit 100. Providing connector guide and cover member 105 on the bottom side of connector unit 100 allows the corresponding terminal members of each power line to be positioned on each of the multiple ribs 106 and completely covered on their rear sides. In addition, the plurality of guides 107 include arms 107a extending from each of the plurality of ribs 106, and the presence of the plurality of guides 107 ensures that the corresponding terminal member 202 of each power line does not get tangled at the base of each rib, but rests on the arms 107a extending on either side of each rib. As a result, when the connector unit 100 is unlocked from the connector guide and cover member 105 after transport, the two or more power lines 201 can be connected to the control device 400 ( Figure 4 When connecting two or more power lines 201 together with their corresponding terminal members 202 can be easily removed from the plurality of ribs 106 formed on the connector guide-cum-cover member 105 without being damaged.

[0021] Once the connector guide and cover member 105 is removed from the connector unit 100, the connector unit 100 together with the two or more power lines 201 fixed therein is carried to the control device 400. In other words, the wiring harness 200 including the two or more power lines 201 fixed in the connector unit 100 and used for connection to the control device 400 is carried to the control device 400. For example, Figure 4A frame structure 410 of a two-wheeled saddle-type vehicle is shown, in which a control device 400 is provided. In this embodiment, the control device 400 is a motor control unit that controls the power supplied from the battery unit 412 to the motor unit (not shown). Further, in this embodiment, the control device 400 is supported on a cross member 411 of the frame structure 410 and is arranged vertically next to the battery unit 412. In particular, corresponding terminals (not shown) in the control device 400 for connecting to two or more power lines 201 of the wiring harness 200 are further connected to the battery unit 412 and the motor unit (not shown), and these corresponding terminals face the front area of the frame structure 410. The wiring harness 200 including the connector unit 100 is assembled on the control device 400 by connecting the two or more power lines 201 of the wiring harness 200, and is fixed to the corresponding terminals (not shown) of the control device 400 in the connector unit 100. In the present embodiment, the wiring harness 200 includes five power lines to be connected to the corresponding terminals of the control device 400, wherein two power lines are connected as outputs from the battery unit 412, and three power lines are connected as inputs to the motor control unit 400. In particular, in the present embodiment, the two or more power lines 201 are connected to the corresponding terminals of the control device by fastening two or more corresponding terminal members 202 of the two or more power lines 201 to the corresponding terminals of the control device 400. Therefore, the connector unit 100 that accommodates the two or more power lines 201 to be connected to the control device 400 is directly assembled above the control device 400. Therefore, the steps of accessing the power lines to be connected to the control device and the steps of wiring the power lines, etc. are omitted, and the assembly time is significantly reduced. In addition, the convenience of assembly is also ensured.

[0022] Once the two or more power lines 201 fixed in the connector unit 100 are fastened to the corresponding terminals of the control device 400, the connector guide cover member 105 is positioned above the top surface of the connector unit 100 (see FIG. Figure 5), positioned above the two or more power lines 201 secured therein. Specifically, while positioning connector guide and cover 105 above connector unit 100, which has already been assembled above control device 100, ensure that the other surface of connector guide and cover member 105, which is free of ribs 106, faces outward toward the front of frame structure 410. Once the other surface of connector guide and cover member 105 is placed above the top surface of connector unit 100, connector guide and cover member 105 is pressed to lock with connector unit 100. Furthermore, in this embodiment, fasteners 112 are used to secure connector guide and cover member 105 to connector unit 100. Corresponding mounting holes 113 for receiving fasteners 112 are formed in connector unit 100. Thus, when connector unit 100 is assembled above control device 400, guide and cover member 105 functions as a protective cover for each of the two or more terminal members 202 of two or more power lines 201. The guide and cover member 105 helps prevent water and dust from entering or splashing directly onto the two or more corresponding terminal members 202.

[0023] As can be seen from the teachings of the present subject matter, the configuration of the connector unit and the wiring harness including the connector unit is unique, wherein the connector unit, which accommodates different power lines, can be used directly to establish an electrical connection with any control device without requiring separate connections. The teachings of the present subject matter provide a reliable solution for ensuring convenient establishment of electrical connections for control devices without compromising the safety of the control device and the safety of the appliance / product incorporating the control device.

Claims

1. A connector unit (100) for a control device (400), the connector unit (100) comprising: A connector base (101) for holding two or more power lines (201) extending from a wiring harness (200); wherein the two or more power lines (201) are connected to the control device (400); and two or more corresponding terminal slots (102), the two or more corresponding terminal slots (102) integrally extending from the connector base (101) for receiving corresponding terminal members (202) of the two or more power lines (201); wherein each corresponding terminal slot of the two or more corresponding terminal slots (102) receives the corresponding terminal member (202) of each power line of the two or more power lines (201); and wherein the two or more power lines (201) are directly coupled to corresponding terminals on the control device (400) when housed in the connector unit (100); as well as A guide and cover member (105) for the connector unit (100), the guide and cover member (105) comprising a plurality of ribs (106) formed along the length of a surface of the connector unit (100), wherein each of the plurality of ribs (106) comprises a base formed as a guide member (107), wherein each guide member (107) comprises a portion extending laterally outward in the form of an arm (107a), wherein the connector unit (100) is pre-locked with the guide and cover member (105) at its bottom side before the connector unit (100) is assembled above the control device (400).

2. The connector unit (100) according to claim 1, wherein each of the two or more corresponding terminal grooves (102) is formed at a predetermined distance from an adjacent terminal groove of the two or more corresponding terminal grooves (102).

3. A connector unit (100) as described in claim 1, wherein the connector unit (100) includes a plurality of retaining arms (103), each retaining arm in a pair of retaining arms of the plurality of retaining arms (103) extending respectively on both sides of each terminal slot in the two or more corresponding terminal slots (102).

4. A connector unit (100) as described in claim 3, wherein each pair of retaining arms among the plurality of retaining arms (103) is configured to press against a pair of crimping terminal arms (202a), and each crimping terminal arm in the pair of crimping terminal arms (202a) is formed in each corresponding terminal member (202) attached to each of the two or more power lines (201).

5. The connector unit (100) according to claim 4, wherein each corresponding terminal member (202) attached to each of the two or more power lines (201) is ring-shaped.

6. The connector unit (100) of claim 1, wherein the connector base (101) is configured to hold a plurality of cable ties (104) on one side along a peripheral length of the connector base (101), wherein at least one cable tie of the plurality of cable ties (104) secures each of the two or more power lines (201) on the connector base (101).

7. The connector unit (100) according to claim 1, wherein the connector base (101) is formed with corresponding locking lugs (110) along the peripheral edge of the connector unit (100), for locking with corresponding locking arms (108) formed along the corresponding peripheral edge of the connector guide and cover member (105).

8. The connector unit (100) of claim 7, wherein the connector guide-cum-cover member (105) is configured to be locked against a top side of the connector unit (100) once the connector unit (100) is assembled.

9. The connector unit (100) according to claim 7, wherein the connector guide and cover member (105) integrally includes a plurality of ribs (106) formed on one of one or more surfaces of the connector guide and cover member (105), and The plurality of ribs (106) are capable of positioning a corresponding terminal member (202) of each of the two or more power lines (201) of the wiring harness (200) when the guide and cover member (105) is assembled on one side of the connector unit (100).

10. The connector unit (100) according to claim 1, wherein the control device (400) is arranged vertically on a cross member (411) of a frame structure (410) of a two-wheeled saddle-type vehicle.

11. The connector unit (100) of claim 1, wherein a wiring harness (200) for the control device (400) is accommodated in the connector unit (100), wherein the wiring harness (200) comprises: two or more power lines (201) to be connected to corresponding terminals of the control device (400); wherein the two or more power lines (201) are fixed in the connector unit (100); and The two or more power lines (201) are directly coupled to the corresponding terminals on the control device (400).

12. A guide and cover member (105) for a connector unit (100), the guide and cover member (105) comprising: a plurality of ribs (106) formed along a length of one surface of the connector unit (100), wherein each of the plurality of ribs (106) includes a base formed as a guide (107), wherein each guide (107) includes a portion extending laterally outward in the form of an arm (107a); as well as Two or more locking arms (108) formed along the peripheral edge of the guide and cover member (105) for locking with corresponding locking lugs (110); wherein the locking lugs (110) are formed along corresponding peripheral edges of a portion of the connector unit (100) so as to be lockable with the connector unit (100), Before the connector unit (100) is assembled above the control device (400), the connector unit (100) is pre-locked with the guide and cover member (105) at its bottom side.

13. The guide-cum-cover member (105) of claim 12, wherein once the connector unit (100) is assembled, the guide-cum-cover member (105) is configured to be locked against a top side of the connector unit (100).

14. The guide and cover member (105) according to claim 12, wherein each of the plurality of ribs (106) supports a terminal member (203), and each of the two or more power lines (201) is fixed in the connector unit (100).

15. A two-wheeled saddle-type vehicle comprising: a frame structure (410) configured to support a battery cell (412); Motor unit; A control device (400) comprising a motor control unit; a connector unit (100) accommodating a wiring harness (200) comprising two or more power lines (201) to be connected to the control device (400); wherein the two or more power lines (201) are fixed in the connector unit (100); wherein the two or more power lines (201) are directly coupled to corresponding terminals on the control device (400); and A guide and cover member (105) for a connector unit (100), the guide and cover member (105) comprising a plurality of ribs (106) formed along the length of a surface of the connector unit (100), wherein each of the plurality of ribs (106) comprises a base formed as a guide member (107), wherein each guide member (107) comprises a portion extending laterally outward in the form of an arm (107a), wherein the connector unit (100) is pre-locked at its bottom side with the guide and cover member (105) before the connector unit (100) is assembled above the control device (400).

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