Cable-free driver of vehicle-mounted electric air conditioner

Abstract

The utility model discloses a cable-free driver for a vehicle-mounted electric air conditioner, which is characterized by comprising a driver main body and a shell, and a PCB (printed circuit board) is arranged on the driver main body; the blind hole nut is fixed on the PCB, the lower end of the blind hole nut is welded with the leading-out wire port, and the upper end of the blind hole nut is matched with the shell; the fixing bolt is in threaded fit with the blind hole nut, and the upper end of the fixing bolt extends out of the outer side of the shell and is matched with the OT terminal through a nut; a wire harness connected with an external component is arranged on the OT terminal, and a sheath is arranged outside the OT terminal. According to the utility model, a traditional wire harness connection structure is removed, and the standard terminals are adopted for direct connection, so that the universality of the driver can be effectively improved. According to the protection structure of the terminal in the scheme, the overall protection grade of the driver is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle-mounted air-conditioning accessories, and in particular relates to a cable-free driver for a vehicle-mounted electric air-conditioning. Background Art

[0002] Most of the existing on-board electric air conditioner drivers have multiple wiring harnesses such as compressor wires, fan wires, communication wires, and temperature sensor wires. Signals or power are transmitted through the wiring harnesses. When installing the driver wiring harness, the wiring harness needs to be soldered to the PCB board first. In order to protect the wiring harness terminals, glue is usually applied to the outside of the terminals. Not only is the appearance poor, but in rain and high temperature environments, the glue melts and the protective effect will also fail.

[0003] The existing structure is not only inconvenient in the manufacturing and transportation process, but also has poor versatility. If the design structure of the air conditioner is slightly changed, the length of the wiring harness of the driver needs to be adjusted, and the change of the external wiring harness will waste a high cost.

[0004] In addition, due to the harsh working environment of vehicle electric air conditioners, the service life of the electronic components of vehicle electric air conditioner drivers is much shorter than that of traditional household air conditioners, but the wiring harness is a component that is not easily damaged, and the wiring harness cost is relatively high (the wiring harness is long and the wire diameter is thick). The driver with the wiring harness needs to be replaced as a whole when it is damaged, resulting in customers bearing higher after-sales spare parts replacement costs. Utility Model Content

[0005] The utility model aims to provide a cable-free driver for a vehicle-mounted electric air conditioner to solve the problems in the prior art.

[0006] The utility model is realized through the following technical scheme: a cable-free driver for an on-vehicle electric air conditioner, characterized in that: it includes a driver body and a shell, and a PCB board is arranged on the driver body; it also includes a blind hole nut, the blind hole nut is fixed on the PCB board and the lower end is welded and connected to the lead-out port, and the upper end is matched with the shell; the fixing bolt is threadedly matched with the blind hole nut, and the upper end extends out of the shell and is matched with the OT terminal through the nut; the OT terminal is provided with a wiring harness connected to an external component, and a sheath is arranged outside the OT terminal.

[0007] Further: the sheath includes a sheath body and a cover connected by a connecting arm, the sheath body includes a first sheath and a second sheath that are vertically arranged and connected; the first sheath cooperates with the head of the OT terminal, and its upper end opening cooperates with the cover, and the lower end cooperates with the shell; the second sheath cooperates with the tail of the OT terminal.

[0008] Furthermore: a through hole is provided on the shell, and the blind hole nut is plugged into and matched with the through hole.

[0009] The beneficial effects of the utility model are:

[0010] The structure of this utility model eliminates the traditional wiring harness connection structure and adopts standard terminal direct connection, which can effectively improve the versatility of the driver and facilitate application and management. The terminal protection structure in this solution greatly improves the overall protection level of the driver. This structure can make the driver applicable to a variety of air-conditioning structures, with strong versatility and high protection level, and only the driver body can be replaced in the after-sales processing of the driver, which greatly reduces the cost of after-sales spare parts of the product and improves the customer's consumption experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the cable-free driver.

[0012] Figure 2 Schematic diagram of the protection structure of the OT connection terminal.

[0013] Figure 3 It is a schematic diagram of the housing protection of the cableless driver.

[0014] Description of the serial numbers in the figure: 1 is the driver body, 2 is the blind hole nut, 3 is the housing, 4 is the PCB board, 5 is the docking terminal, 6 is the sheath, 7 is the OT terminal, 8 is the wiring harness, 10 is the fixing bolt, and 11 is the nut;

[0015] 61 is the sheath body, 62 is the cover, 63 is the connecting arm, 611 is the first sheath, and 612 is the second sheath. DETAILED DESCRIPTION

[0016] like Figure 1-3 As shown, the utility model discloses a cable-free driver for an electric air conditioner mounted on a vehicle, comprising a driver body 1 and a housing 3, wherein the driver body 1 and the housing 3 are connected and fixed by bolts; a PCB board 4 is arranged on the driver body; and a blind hole nut 2 is also included, wherein the blind hole nut is fixed on the PCB board and the lower end is welded and connected to the lead-out port of the PCB board and electrically connected, and the upper end is matched with the opening on the housing and can be inserted into the corresponding opening; a fixing bolt 10 is threadedly matched with the blind hole nut 2, and the upper end of the fixing bolt extends out of the housing and is matched with the OT terminal 7 through a nut 11; specifically, two nuts can be arranged up and down to press the head of the OT terminal to realize electrical connection with the bolt; a gasket can also be arranged below the terminal and a nut can be arranged above the terminal, and the nut presses the terminal and the gasket together on the flange below the first sheath and the housing, which not only realizes compression, but also seals and insulates the blind hole nut. The tail of the OT terminal is crimped with a wiring harness 8 connected to an external component (such as a power supply or an air conditioner motor), and a sheath 6 is arranged outside the OT terminal.

[0017] Preferably: the sheath 6 is integrally formed of plastic material, and includes a sheath body 61 and a cover 62 connected by a connecting arm 63, the sheath body 61 includes a first sheath 611 and a second sheath 612 that are vertically arranged and connected, and the first sheath 611 and the second sheath 612 are both cylindrical; the first sheath cooperates with the head of the OT terminal, and its upper end opening cooperates with the cover, and the lower end cooperates with the shell; the second sheath cooperates with the tail of the OT terminal.

[0018] The working process of the utility model is as follows:

[0019] The structure of a cable-free driver for an on-board electric air conditioner described in this scheme has no output lines, and all are connected to the external wiring harness in the form of terminals. Terminal interfaces for various functional components are reserved on the driver. The structural schematic diagram of the driver is shown in Figure 1. Among them, a plug-in docking terminal 5 is also provided on the driver body, which is mainly used to connect the outdoor fan line, the compressor speed control line and the fault feedback line, the RS485 communication line and the temperature sensor line, etc. 2 is a blind hole nut, which is connected to the OT terminal 7 by bolts, and is mainly used to connect the positive and negative poles of the battery power line, the compressor three-phase line and other high-current wiring harnesses.

[0020] In order to protect the high current harness terminals of the driver, a special protection structure is used at the OT terminal connection. Figure 2 As shown, the OT terminal 7 is matched and connected with the blind hole nut 2 by bolts. One end of the blind hole nut is welded on the PCB board 4, and the other end is matched and sealed with the housing 3 of the driver. The OT terminal 7 is welded with the wiring harness 8 and the whole is inserted into the plastic sheath body 6. After the OT terminal 7 is fixed with the blind hole nut 2 by bolts, the cover is pressed into the plastic sheath body, and the pressing depth is greater than 8mm. The cover and the sheath body are tightly matched, so as to seal and protect the connection of the OT terminal.

Claims

1. A cable-free driver for an on-vehicle electric air conditioner, characterized in that: It includes a driver body and a housing, and a PCB board is arranged on the driver body; A blind hole nut is also provided on the PCB board, the lower end of the blind hole nut is welded to the lead-out port of the PCB board, and the upper end of the blind hole nut is matched with the housing; It also includes a fixing bolt, the lower part of which is threadedly matched with the blind hole nut, and the upper part of which extends out of the housing and is matched with the OT terminal; The OT terminal is provided with a wiring harness connected to an external component, and a sheath is provided outside the OT terminal.

2. The cable-free driver for an on-vehicle electric air conditioner according to claim 1, characterized in that: The sheath includes a sheath body and a cover connected by a connecting arm, and the sheath body includes a first sheath and a second sheath that are vertically arranged and connected; the first sheath cooperates with the head of the OT terminal, and its upper end opening cooperates with the cover, and the lower end cooperates with the shell; the second sheath cooperates with the tail of the OT terminal.

3. The cable-free driver for an on-vehicle electric air conditioner according to claim 1, characterized in that: A through hole is arranged on the shell body, and the blind hole nut is plug-fitted with the through hole.

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