Driver structure for brushless fuel pump and cable socket connection positioning structure

Abstract

The utility model discloses a driver structure for a brushless fuel pump and a cable socket connection positioning structure, which can position a cable socket and prevent the cable socket from being separated from a contact pin. Comprising a body shell, a buckle and a plurality of cables, the body shell is provided with a mushroom head and a plurality of contact pins, the head of each cable is provided with a cable socket, the buckle is clamped and fixed on the mushroom head, the buckle is cylindrical, one end of the buckle is sealed, the other end of the buckle is open, the sealed end of the buckle is provided with a mounting hole, the mounting hole comprises a middle hole and a plurality of groove holes, and the middle hole is communicated with the groove holes. The middle hole part of the installation hole is used for cable sockets to penetrate through, cables correspondingly penetrate through the groove holes, the groove holes axially limit the cable sockets, and the cable sockets are correspondingly inserted into the contact pins. The elastic clamping column is provided with a barb, and the barb is positioned through the step of the mushroom head. The embodiment of the utility model can be applied to positioning the cable socket under various working conditions and prevent the cable socket from being separated from the pin.

Description

Technical Field

[0001] The utility model relates to the technical field of motorcycles, in particular to a driver structure for a brushless fuel pump and a cable socket connection positioning structure. Background Art

[0002] As motorcycles enter the era of electronic fuel injection (EFI) fuel supply systems, the first popular fuel pump assembly that uses a small brush motor as the driving force is the brush fuel pump assembly, because motorcycle gasoline engines generally have a small displacement and require less fuel injection. Mainstream motorcycle manufacturers have specially modified motorcycle fuel tanks and vehicle cables to suit brush fuel pump assemblies. With the maturity of brushless motor technology, brushless fuel pumps are gradually replacing brush fuel pump assemblies with smaller size, higher efficiency and energy saving, quieter and smoother.

[0003] The biggest difference between a brushless fuel pump and a brushed fuel pump is that a driver with an electronic IC chip as the core is required to drive the operation of the brushless motor. Therefore, a typical brushless fuel pump assembly for motorcycles is like a brushless fuel pump assembly described in utility model patent CN220081568U, which has a detachable independent driver installed separately in addition to the conventional fuel pump assembly body like a brushed fuel pump assembly.

[0004] As mentioned above, since the fuel tank of a motorcycle is very small, the seat surface suitable for installing the fuel pump is also very small. This method of separating the connector of the fuel level sensor attached to the fuel pump assembly from the independent driver is conducive to the layout on the installation seat surface. However, the disadvantages are also very obvious:

[0005] a. Two connectors are required on the vehicle cable, which increases both the material cost and the installation cost;

[0006] b. As brushed fuel pump assemblies have become popular and occupy an absolute market share, such brushless fuel pump assemblies cannot be interchanged, especially after-sales replacements. Utility Model Content

[0007] The utility model aims to overcome the deficiencies of the prior art and to provide a driver structure for a brushless fuel pump and a cable socket connection positioning structure, which can position the cable socket to prevent it from falling out of the pin.

[0008] The purpose of the utility model is achieved in this way:

[0009] A driver structure for a brushless fuel pump includes a driver body, the driver body includes a body shell, a driver IC circuit board, a mounting cavity is provided on the body shell, the driver IC circuit board is placed in the mounting cavity of the body shell, a three-phase driver IC output circuit corresponding to the brushless fuel pump motor is provided on the driver IC circuit board, and a mushroom head is provided on the output side of the body shell, characterized in that:

[0010] The driver IC circuit board is also provided with a two-phase sensor connector circuit corresponding to the oil level sensor. The output side of the body shell is provided with five pins, which are distributed in a regular pentagon. The three-phase driver IC output circuit and the two-phase conversion circuit are led together and distributed correspondingly with the five pins, and are connected accordingly.

[0011] It also includes a clip, three cables connected to the brushless fuel pump motor, and two cables connected to the oil level sensor, each cable head is provided with a cable socket, the clip is cylindrical, one end is sealed, and the other end is open, the open end of the clip is provided with a plurality of elastic clamping columns, the plurality of elastic clamping columns are positioned on the mushroom head, the sealed end of the clip is provided with a mounting hole, the mounting hole includes a middle hole and five groove holes evenly distributed around the middle hole, the five groove holes are connected with the middle hole to form a five-petal plum blossom shape, the diameter of the middle hole part of the mounting hole is larger than the diameter of the cable socket, the middle hole part of the mounting hole is for the cable socket to pass through, the width of the groove hole part of the mounting hole is larger than the diameter of the cable and smaller than the diameter of the cable socket, each cable passes through the five groove holes correspondingly, the five groove holes form an axial limit for each cable socket, and each cable socket is correspondingly plugged into five pins.

[0012] Preferably, each pin is welded and glue-filled to seal the output side of the main body shell.

[0013] Preferably, the elastic clamping column has a barb, and the barb is positioned by the step of the mushroom head.

[0014] Preferably, the five groove holes are curved along the circumferential direction.

[0015] A cable socket connection and positioning structure comprises a main body shell, on which a plurality of pins are arranged, a buckle and a plurality of cables, a mushroom head is arranged on the main body shell, and a cable socket is arranged at the head of each cable, the buckle is fixed on the mushroom head by snapping, the buckle is cylindrical, one end of which is sealed and the other end is open, a mounting hole is arranged at the sealed end of the buckle, the mounting hole comprises a middle hole and a plurality of groove holes evenly distributed around the middle hole, each groove hole is connected with the middle hole, a diameter of the middle hole portion of the mounting hole is larger than a diameter of the cable socket, the middle hole portion of the mounting hole is for the cable socket to pass through, a width of the groove hole portion of the mounting hole is larger than the diameter of the cable and smaller than the diameter of the cable socket, each cable passes through each groove hole correspondingly, each groove hole forms an axial limit for the cable socket, and each cable socket is correspondingly plugged onto each pin.

[0016] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0017] 1. The utility model integrates the oil level sensor interface that had to be separated before, with the interface size and volume of the original typical brushless oil pump independent driver. It only adds a very low-cost flower-shaped buckle, saving the cost of the connection plug with the vehicle cable;

[0018] 2. The brushless fuel pump assembly adopting the driver structure of the utility model can be more conveniently designed into the installation interface of the already popular brushed fuel pump assembly, saving the coordination design and manufacturing costs of the motorcycle;

[0019] 3. Based on the second point, the brushless fuel pump assembly using the driver structure of the utility model can be interchangeable with the brushed fuel pumps that are already widely available on the market, which not only allows existing motorcycles to seamlessly enjoy higher quality fuel pump assemblies, but also saves after-sales maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the main body shell;

[0022] Figure 3 It is a schematic diagram of the driver IC circuit board;

[0023] Figure 4 This is a schematic diagram of the installation of the driver IC circuit board;

[0024] Figure 5 A schematic diagram of the structure of the seat surface interface for the fuel pump assembly;

[0025] Figure 6 This is a schematic diagram of the installation of the driver body;

[0026] Figure 7 is a schematic diagram of the structure of the buckle;

[0027] Figure 8 This is a schematic diagram of cable and clip assembly;

[0028] Fig. 9 The diagram is a schematic diagram of the installation of the driver assembly on the fuel pump assembly.

[0029] Reference numerals

[0030] In the accompanying drawings, 1 is the driver body, 2 is the sealing ring, 3 is the buckle, 4 is the cable, and 5 is the fuel pump assembly. DETAILED DESCRIPTION

[0031] Embodiment 1

[0032] A cable socket connection and positioning structure includes a main body shell, a plurality of pins are arranged on the main body shell, a buckle and a plurality of cables, a mushroom head is arranged on the main body shell, a cable socket is arranged at the head of each cable, the buckle is fixed on the mushroom head, the buckle is cylindrical, one end is sealed and the other end is open, a mounting hole is arranged at the sealed end of the buckle, the mounting hole includes a middle hole and a plurality of groove holes evenly distributed around the middle hole, each groove hole is connected to the middle hole, the diameter of the middle hole portion of the mounting hole is larger than the diameter of the cable socket, the middle hole portion of the mounting hole is for the cable socket to pass through, the width of the groove hole portion of the mounting hole is larger than the diameter of the cable and smaller than the diameter of the cable socket, each cable passes through each groove hole correspondingly, each groove hole forms an axial limit for the cable socket, and each cable socket is correspondingly plugged on each pin. The elastic clamping column has a barb, and the barb is positioned by the step of the mushroom head. This embodiment can be applied to position the cable socket under various working conditions to prevent it from falling out of the pin.

[0033] Embodiment 2

[0034] The present embodiment is a further application of the first embodiment, a driver structure for a brushless fuel pump, including a driver body 1, the driver body 1 including a body shell 1-1 and a driver IC circuit board 1-2, the body shell 1-1 is provided with a mounting cavity, the driver IC circuit board 1-2 is placed in the body shell mounting cavity, the driver IC circuit board 1-2 is provided with a three-phase driver IC output circuit corresponding to the brushless fuel pump motor, and the output side of the body shell 1-1 is provided with a mushroom head.

[0035] The driver IC circuit board is also provided with a two-phase sensor connector circuit corresponding to the oil level sensor. The output side of the body shell 1-1 is provided with five pins, which are distributed in a regular pentagon. Each pin is welded and sealed with glue on the output side of the body shell 1-1. The three-phase driver IC output circuit and the two-phase conversion circuit are led together and distributed correspondingly with the five pins, and are electrically connected accordingly.

[0036] It also includes a buckle 3, three cables connected to the brushless fuel pump motor, and two cables connected to the oil level sensor. The head of each cable 4 is respectively provided with a cable socket 4-1. The buckle 3 is cylindrical, with one end sealed and the other end open. The open end of the buckle 3 is provided with a plurality of elastic clamping columns, and the plurality of elastic clamping columns are positioned on the mushroom head. The sealed end of the buckle 3 is provided with a mounting hole, and the mounting hole includes a middle hole and five groove holes evenly distributed around the middle hole. The five groove holes are connected to the middle hole to form a five-petal plum blossom shape. The diameter of the middle hole part of the mounting hole is larger than the diameter of the cable socket. The middle hole part of the mounting hole is for the cable socket 4-1 to pass through. The width of the groove hole part of the mounting hole is larger than the diameter of the cable 4 and smaller than the diameter of the cable socket 4-1. Each cable passes through the five groove holes correspondingly. The five groove holes form an axial limit for each cable socket 4-1, and each cable socket is correspondingly plugged into five pins.

[0037] Specifically:

[0038] a. Integrate the oil level sensor connector into the driver so that the connector is consistent with the brush pump assembly.

[0039] b. At the same time, the size of the driver on the mounting seat surface must be kept small and can be installed.

[0040] a. The driver structure of the utility model is composed of a driver body 1, a sealing ring 2, a buckle 3 and a customized cable 4 according to the connection requirements of the oil pump assembly.

[0041] b. The driver body consists of a body shell 1-1 and a driver IC circuit board 1-2; the driver IC circuit board is placed in the mounting cavity of the body shell, and after welding with the pins, it is sealed with glue to ensure waterproof, dustproof, shock-absorbing and heat dissipation.

[0042] c. The main body shell is designed to be cylindrical on the fuel pump assembly mounting seat side for easy installation and sealing; and is designed to be a rectangular body on the circuit board mounting side for easy circuit board manufacturing ( Figure 2 ).

[0043] d. To minimize the area on the installation side, since three cables are needed to connect the brushless fuel pump motor and two cables are needed to connect the fuel level sensor, the five pins on the output side of the body shell do not use standard anti-drop sheet industrial connector plugs, but use more compact pin-type plugs without anti-drop structure. And these pins are arranged in a plum blossom shape in 5 directions.

[0044] e. Accordingly, on the driver IC circuit board, a conversion circuit of the oil level sensor connector is set to guide the 2-phase sensor connector circuit and the 3-phase driver IC output circuit together to form the same plum blossom-shaped positive 5-position arrangement ( Figure 4 ).

[0045] f, Figure 5 It is a typical mounting hole structure of the driver body on the mounting surface of the fuel pump assembly. The driver body (the cylindrical part where the mushroom head is located) is put into the mounting hole after the sealing ring is put on. The mushroom head at the front end of the driver body shell is supported by the elastic card inside, and the driver body is tightly installed in the mounting hole ( Figure 6 ).

[0046] g. Since a motorcycle is a high-vibration machine, the pin without an anti-drop structure used to reduce the installation volume is unreliable. The utility model innovatively designs a flower-shaped buckle to fasten the connection between the cable and the pin.

[0047] h, buckle ( Figure 7) is also slightly larger than the standard cable socket at the cable head. A 5-petal curved groove is opened in the middle of the connection. The groove is slightly larger than the wire diameter of the cable (part 4) and slightly smaller than the socket at the cable head. Three inverted clamping columns extend from one side of the buckle to clamp the mushroom head of the driver housing.

[0048] i. During assembly, pass the cable head through the middle of the buckle, and then slide the cable into the groove hole ( Figure 8 ); insert the 5 cables into the buckle, then the cable socket and the pin, and finally snap the buckle into the mushroom head on the front end of the drive housing ( Fig. 9 , cross-sectional structure after assembly), to ensure that the cable plug is not affected by vibration and thus does not fall off axially.

[0049] j. The length of the cable and the socket on the other side can be customized and adjusted according to actual wiring requirements.

[0050] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. A driver structure for a brushless fuel pump, comprising a driver body, the driver body comprising a body shell, a driver IC circuit board, a mounting cavity is provided on the body shell, the driver IC circuit board is placed in the mounting cavity of the body shell, a three-phase driver IC output circuit corresponding to the brushless fuel pump motor is provided on the driver IC circuit board, and a mushroom head is provided on the output side of the body shell, characterized in that: The driver IC circuit board is also provided with a two-phase sensor connector circuit corresponding to the oil level sensor. The output side of the body shell is provided with five pins, which are distributed in a regular pentagon. The three-phase driver IC output circuit and the two-phase conversion circuit are led together and distributed correspondingly with the five pins, and are connected accordingly. It also includes a clip, three cables connecting the brushless fuel pump motor, and two cables connecting the oil level sensor, each cable head is provided with a cable socket, the clip is cylindrical, one end is sealed, and the other end is open, the open end of the clip is provided with a plurality of elastic clamping columns, and the plurality of elastic clamping columns are positioned on the mushroom head, and the sealed end of the clip is provided with a mounting hole, the mounting hole includes a middle hole and five groove holes evenly distributed around the middle hole, the five groove holes are connected to the middle hole, the diameter of the middle hole part of the mounting hole is larger than the diameter of the cable socket, the middle hole part of the mounting hole is for the cable socket to pass through, the width of the groove hole part of the mounting hole is larger than the diameter of the cable and smaller than the diameter of the cable socket, each cable passes through the five groove holes correspondingly, the five groove holes form an axial limit for each cable socket, and each cable socket is correspondingly plugged into five pins.

2. A brushless fuel pump driver structure according to claim 1, characterized in that: Each pin is welded and sealed on the output side of the body shell.

3. A brushless fuel pump driver structure according to claim 1, characterized in that: The elastic clamp has a barb, which is positioned by the step of the mushroom head.

4. A brushless fuel pump driver structure according to claim 1, characterized in that: The five groove holes are bent along the circumferential direction.

5. A cable socket connection and positioning structure, comprising a main body shell, on which a plurality of pins are arranged, characterized in that: It also includes a buckle and multiple cables. A mushroom head is provided on the main body shell. The head of each cable is respectively provided with a cable socket. The buckle is fixed on the mushroom head. The buckle is cylindrical with one end sealed and the other end open. The sealed end of the buckle is provided with a mounting hole. The mounting hole includes a middle hole and a plurality of groove holes evenly distributed around the middle hole. Each groove hole is connected to the middle hole. The diameter of the middle hole part of the mounting hole is larger than the diameter of the cable socket. The middle hole part of the mounting hole is for the cable socket to pass through. The width of the groove hole part of the mounting hole is larger than the diameter of the cable and smaller than the diameter of the cable socket. Each cable passes through each groove hole accordingly. Each groove hole forms an axial limit for the cable socket. Each cable socket is correspondingly plugged into each pin.

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