A press fitting structure of an ignition coil end tab

Abstract

The utility model relates to an assembly tool structure. A kind of ignition coil end connecting piece's press mounting structure, including bottom plate, coil framework fixing seat is installed on bottom plate, connecting piece press mounting support is equipped in one side of coil framework fixing seat, base is installed on connecting piece press mounting support, connecting piece feed structure is installed on base, the connecting piece press mounting support of described installation has pressure head lifting structure, pressure head is installed on pressure head lifting structure;The one end of feed structure is connected with push rod structure, the other end of feed structure is connected with discharge port, and guide structure is equipped at discharge port. The utility model provides a kind of ignition coil end connecting piece's press mounting structure with high efficiency, low requirement to operator proficiency, high qualified rate;Solve the technical problem of low efficiency for the connecting piece of ignition coil end press mounting in the prior art, high requirement to operator proficiency, low yield.

Description

Technical Field

[0001] This utility model relates to an assembly tooling structure, and more particularly to a press-fitting structure for an ignition coil end connecting piece. Background Technology

[0002] The primary function of an automotive ignition coil is to convert the low voltage (typically 12 volts) supplied by the vehicle battery into a high voltage (typically tens of thousands of volts) to generate a spark that ignites the fuel mixture in the engine cylinders. A typical ignition coil contains two coils: a primary coil and a secondary coil. The primary coil uses thicker enameled wire, typically about 0.5-1 mm thick, wound with approximately 200-500 turns; the secondary coil uses thinner enameled wire, typically about 0.1 mm thick, wound with approximately 15,000-25,000 turns. One end of the primary coil connects to the vehicle's low-voltage power supply, and the other end connects to the switching device. One end of the secondary coil connects to the primary coil, and the other end connects to the high-voltage output terminal to output high-voltage electricity. Connecting tabs are press-fitted to the ends of the coils, enabling electrical connection. Currently, the coil and connecting tabs are typically press-fitted manually. The connecting tabs are placed one by one on a manual press and then pressed into the mounting slots at the ends of the coils. Because the connecting pieces are typically very thin, around 0.4mm, the operation requires a high level of skill from the workers, resulting in inconsistent production cycles. Skilled workers can achieve a 5-second cycle, while new employees may take up to 15 seconds. This leads to low pressing efficiency, high operator skill requirements, and increased costs. Summary of the Invention

[0003] This utility model provides a press-fit structure for the end connector of an ignition coil that is highly efficient, requires less operator skill, and has a high pass rate; it solves the technical problems of low efficiency, high operator skill requirements, and low yield in the press-fitting of end connectors for ignition coils in the prior art.

[0004] The above-mentioned technical problem of this utility model is solved by the following technical solution: a pressing structure for an ignition coil end connecting piece, including a base plate, a coil frame fixing seat mounted on the base plate, a connecting piece pressing bracket on one side of the coil frame fixing seat, a base mounted on the connecting piece pressing bracket, a connecting piece feeding structure mounted on the base, a pressing head lifting structure mounted on the connecting piece pressing bracket, and a pressing head mounted on the pressing head lifting structure; one end of the feeding structure is connected to a push rod structure, and the other end of the feeding structure is connected to a discharge port, with a guide structure provided at the discharge port. The connecting piece is installed in the feeding structure, which automatically feeds the material, reducing the skill requirements of the operator and improving production efficiency. Because the connecting piece is very thin, a guide structure is designed for pressing to ensure the accuracy and strength of the pressing, improving the yield rate. The pressing head lifting structure drives the pressing head to move up and down to complete the pressing, resulting in high overall efficiency and good stability.

[0005] Preferably, the pressure head includes a pressure head section and a guide section. The width of the pressure head section is the same as the thickness of the connecting piece, and the thickness of the guide section is greater than that of the pressure head section. Since the connecting piece is only 0.4mm thick, the pressure head cannot exceed this thickness. A pressure head that is too thin is prone to breakage during use and is not economical. Therefore, two guide sections are designed in the pressing section. The thickness of the first guide section is increased to 1mm, greatly improving the strength of the pressure head. After the first guide section, the pressing section enters the second guide section, where it is no longer under stress, thus solving the problem of easy breakage.

[0006] Preferably, the thickness of the pressure head section is 0.4 mm, the thickness of the guide section is 0.8 mm to 1.2 mm, and the pressure head section and the guide section are connected and transitioned by a slope section.

[0007] Preferably, the feeding structure includes a feeding plate with a feeding groove on it. The feeding plate is located on the base, and the shape of the feeding groove is the same as the shape of the connecting piece body. An arc-shaped stop surface is provided at the opening of the feeding groove. The main functions of the stop surface are: 1. To prevent the connecting piece from flipping in the feeding groove during the feeding process; 2. To prevent the connecting piece from falling out of the feeding groove or tilting; 3. To provide reliable support for the back of the connecting piece after it is pushed out of the feeding groove, allowing the connecting piece to enter the connecting piece mounting groove at the end of the coil vertically downwards.

[0008] Preferably, the guiding structure includes a guiding plate installed on one side of the discharge port, fixed to the mounting plate, with secondary guiding holes on the guiding plate and a primary guiding groove at the end of the feed plate, the discharge port being located below the primary guiding groove. Because the product is very thin, two guiding processes are required. The pressure head begins to enter the magazine, with a clearance space provided to prevent mechanical contact between the 0.4mm half-section and the magazine. The pressure head continues downwards, first contacting the magazine's contour guide at the 1mm reinforcement position to achieve the first guiding; the pressure head continues downwards, contacting the second contour guide at the 0.4mm pressing section to begin the first guiding, and then contacts the terminal to begin pressing.

[0009] Preferably, a stop block is installed on the base, and a stop groove is provided on the feed plate of the feeding structure, with the stop block located within the stop groove. This prevents the feed plate from sliding.

[0010] Preferably, the push rod structure includes a push rod located within the feed trough. One end of the push rod is connected to a guide rod via a horizontal plate. The horizontal plate is rotatable around the guide rod. The other end of the guide rod passes through a through hole in a guide block, which is fixed to the base. When changing the feed plate, the horizontal plate is rotated to the other side, the feed plate is removed, and after the material change is completed, the horizontal rod is again pressed against the rear end of the guide rod to push the guide rod to feed the material.

[0011] Preferably, a spring is installed on the guide rod, with one end of the spring abutting against the guide block and the other end fixed to the end of the guide rod. The spring force pushes the crossbar, which in turn pushes the guide rod to move. This also allows for convenient replacement of the feed plate after the connecting piece within the feeding / discharging structure has been used.

[0012] Preferably, the connecting plate pressing bracket includes four sets of columns, on which a base, a pressing head mounting plate, and a fixing plate are mounted. The base, pressing head mounting plate, and fixing plate are parallel to each other. A pressure plate spring is sleeved on the column between the base and the pressing head mounting plate, and a base spring is sleeved on the column between the base and the base plate. The design of the pressure plate spring and the base spring ensures that the pressing head mounting plate and the base are not affected by the press and can be directly reset by the springs. This design is adaptable to various drive structures and has good versatility.

[0013] Therefore, the pressing structure of the ignition coil end connecting piece of this utility model has the following advantages: the design of the feeding plate and spring realizes automatic feeding and reset, reducing the skill requirements of the operator; the design of the guiding structure ensures the strength and stability of the pressing head; the fixed plate can be connected to manual, pneumatic or motor as the driving structure, which has high adaptability. Attached Figure Description

[0014] Figure 1 This is a three-dimensional diagram of a press-fit structure for an ignition coil end connector.

[0015] Figure 2 yes Figure 1 A three-dimensional view from another direction.

[0016] Figure 3 yes Figure 1 Enlarged view of point A in the middle.

[0017] Figure 4 yes Figure 3 A diagram showing the removal of the guide plate.

[0018] Figure 5 This is a 3D view of the feed plate.

[0019] Figure 6 It is a 3D diagram of the pressure head.

[0020] Figure 7 It is a 3D diagram of the press-fitting structure and the manual press working together. Detailed Implementation

[0021] The technical solution of the utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0022] Example:

[0023] like Figure 1 and 2As shown, a press-fit structure for an ignition coil end connector includes a base plate 1, on which a coil frame fixing seat 12 is mounted, and the coil frame 13 is positioned within the coil frame fixing seat 12. A connector press-fit bracket is arranged on one side of the coil frame fixing seat 12.

[0024] The connecting plate mounting bracket consists of three sets of columns 6 arranged in three layers. Each layer has four columns 6. Parallel base plates 1, bases 2, pressure head mounting plates 3, and fixing plates 4 are fixed to the three layers of columns 6 respectively. Pressure springs 7 are sleeved on the columns between bases 2 and pressure head mounting plates 3, and base springs 8 are sleeved on the columns between bases 2 and base plates 1. A through hole 5 is provided in the center of the fixing plate 4, allowing the installation of a drive motor, hydraulic cylinder, or pneumatic cylinder, or it can be mounted on a manual press, allowing the pressure head 33 of the manual press to abut against the pressure head mounting plate 3, driving the pressure head mounting plate 3 to move up and down. A pressure head mounting seat 9, perpendicular to the pressure head mounting plate 3, is installed on the pressure head mounting plate 3, and a pressure head 10 is fixed to the pressure head mounting seat 9 by bolts.

[0025] like Figure 6 As shown, the pressure head 10 includes a pressure head section 29 and a guide section 31. The width of the pressure head section 29 is the same as the thickness of the connecting piece 23, and the thickness of the guide section 37 is greater than that of the pressure head section 29. The thickness of the pressure head section 29 is 0.4 mm, and the thickness of the guide section 31 is 1 mm. The pressure head section 29 and the guide section 31 are connected and transitioned by a slope section 30.

[0026] like Figure 3 and 4 As shown in Figure 5, a feeding plate 11 is installed on the base 2. A feeding groove 26 is formed on the feeding plate 11. The shape of the feeding groove 26 is the same as the shape of the main body of the connecting piece 23. An arc-shaped stop surface 27 is formed at the opening of the feeding groove, which can effectively prevent the connecting piece 23 from tipping over or falling. Furthermore, during the process of the connecting piece 23 being discharged from the feeding groove 26 and pressed into the coil frame below, the arc-shaped stop surface 27 of the feeding groove is located on the rear side of the connecting piece 23, thus preventing the connecting piece 23 from tipping over or falling.

[0027] This forms a support and guide, allowing the connecting piece 23 to be smoothly pressed into the connecting piece groove on the end face of the coil frame.

[0028] A push rod 15 is installed inside the feed trough 26. One end of the push rod 15 abuts against the connecting piece 23, and the other end of the push rod 15 is equipped with a push rod seat 16. One end of a crossbar 17 abuts against the push rod seat 16, and the other end of the crossbar 17 is connected to a guide rod 18. The crossbar 17 can rotate around the guide rod 18. The guide rod 18 and the push rod 15 are parallel to each other. The guide rod 18 passes through the through hole of the guide block 19 fixed on the base and extends towards the coil frame. A spring 20 is sleeved on the guide rod 18. One end of the spring 20 abuts against the guide block 19, and the other end of the spring 20 abuts against the stop piece 21 at the end of the guide rod.

[0029] A stop groove 28 is provided on the rear side of the feed plate, and a stop block 14 that can rotate around the shaft is installed on the base 2 via a shaft. The end of the stop block 14 is engaged in the stop groove 28.

[0030] The upper side of one end of the feed plate 11 is formed with a stepped surface. An L-shaped guide plate 22 is fixed to the stepped surface by screws. A secondary guide hole 24 is opened on the horizontal plate of the guide plate 22. A primary guide groove 25 is opened at the end of the feed plate 11. The primary guide groove 25 is located above the feed groove 26, and the discharge port is below the primary guide groove 25. The primary guide groove 25 protrudes outside the feed groove 26. The push rod 15 pushes the connecting piece 23 out to the discharge port, and the pressure head in the primary guide groove 25 presses down to press the connecting piece 23 onto the coil frame.

[0031] like Figure 7 As shown, the head of the manual press passes through the through hole in the center of the fixed plate and abuts against the press head mounting plate. Operating handle 32 causes the press head mounting plate to move downwards. The press head passes through the primary and secondary guiding structures and abuts against the upper end of the connecting piece, continuing to press downwards to insert the connecting piece into the coil frame. At this time, the push rod is pushed forward by the spring pressure, and the next connecting piece continues to move forward and abuts against the vertical plate of the guiding plate. During the lifting of the press head, the pressure plate spring and the base spring reset the base and the press head mounting plate. When it is necessary to add material to the feed trough, pull the crossbar backwards to separate it from the push rod seat. Rotate the crossbar to the other side, so that it does not contact the push rod seat. Rotate the stop block out of the stop groove, then remove the feed plate. After loading, insert the stop block back into the stop groove. The crossbar rotates again and abuts against the push rod seat, thus fixing the feed plate and feeding the push rod.

[0032] The specific embodiments described herein are merely illustrative of the concept of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A press-fit structure for an ignition coil end connector, characterized in that: The device includes a base plate, on which a coil frame fixing seat is mounted. A connecting piece pressing bracket is provided on one side of the coil frame fixing seat. A base is mounted on the connecting piece pressing bracket, and a connecting piece feeding structure is mounted on the base. A pressure head lifting structure is mounted on the connecting piece pressing bracket, and a pressure head is mounted on the pressure head lifting structure. One end of the feeding structure is connected to a push rod structure, and the other end of the feeding structure is connected to a discharge port. A guide structure is provided at the discharge port.

2. The press-fit structure of the ignition coil end connecting piece according to claim 1, characterized in that: The pressure head includes a pressure head section and a guide section. The width of the pressure head section is the same as the thickness of the connecting piece, and the thickness of the guide section is greater than that of the pressure head section.

3. The press-fit structure of the ignition coil end connecting piece according to claim 2, characterized in that: The thickness of the pressure head section is 0.4 mm, and the thickness of the guide section is 0.8 mm to 1.2 mm. The pressure head section and the guide section are connected and transitioned by a slope section.

4. The press-fit structure of the ignition coil end connecting piece according to claim 1, 2, or 3, characterized in that: The feeding structure includes a feeding plate with a feeding groove. The feeding plate is located on the base. The shape of the feeding groove is the same as the shape of the connecting piece body. An arc-shaped stop surface is provided at the opening of the feeding groove.

5. The press-fit structure of the ignition coil end connecting piece according to claim 1, 2, or 3, characterized in that: The guiding structure includes a guiding plate installed on one side of the discharge port, the guiding plate being fixed on the mounting plate, a secondary guiding hole being provided on the guiding plate, a primary guiding groove being provided at the end of the feeding plate, and the discharge port being located below the primary guiding groove.

6. The press-fit structure of the ignition coil end connecting piece according to claim 1, 2, or 3, characterized in that: The base is equipped with a stop block, and a stop groove is provided on the feed plate of the feeding structure, with the stop block located in the stop groove.

7. The press-fit structure for the end connecting piece of an ignition coil according to claim 1, 2, or 3, characterized in that: The push rod structure includes a push rod located in the feed trough. One end of the push rod is connected to a guide rod via a horizontal plate. The horizontal plate can rotate around the guide rod. The other end of the guide rod passes through a through hole in the guide block, and the guide block is fixed on the base.

8. The press-fit structure of the ignition coil end connecting piece according to claim 7, characterized in that: A spring is installed on the guide rod, with one end of the spring abutting against the guide block and the other end of the spring fixed to the end of the guide rod.

9. The press-fit structure of the ignition coil end connecting piece according to claim 1, 2, or 3, characterized in that: The connecting piece pressing bracket includes four sets of columns, on which a base, a pressing head mounting plate, and a fixing plate are installed. The base, pressing head mounting plate, and fixing plate are parallel to each other. A pressure plate spring is sleeved on the column between the base and the pressing head mounting plate, and a base spring is sleeved on the column between the base and the bottom plate.

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