Connecting assembly of secondary coil and high-voltage output end

Abstract

The utility model relates to the technical field of ignition coils, in particular to a connecting assembly of a secondary coil and a high-voltage output end. The connecting assembly of the secondary coil and the high-voltage output end comprises the secondary output end and a secondary connecting piece, the secondary connecting piece is provided with an installation hole, and the installation hole comprises a round hole and a plurality of jacks which are communicated with each other. According to the utility model, through the arrangement of the plurality of plugging columns and the plurality of jacks which are arranged on the secondary connecting sheet and are in one-to-one correspondence with the plugging columns and are matched with the plugging columns, compared with a traditional cylindrical secondary output end and a secondary connecting sheet provided with a circular hole, the contact area is increased; the two opposite side walls of each inserting column can make contact with the two opposite side walls of the corresponding inserting hole, the contact area is increased, each inserting column is in a petal shape, the width of the side, close to the column body, of each inserting column is smaller than the width of the other side of the inserting column, each inserting column can be connected with the corresponding inserting hole, and therefore the inserting efficiency is improved. And the occurrence of poor contact is reduced.

Description

Technical Field

[0001] This utility model relates to the field of ignition coil technology, specifically to a connection component between a secondary coil and a high-voltage output terminal. Background Technology

[0002] As automotive gasoline engines develop towards higher speeds, higher compression ratios, higher power, lower fuel consumption, and lower emissions, traditional ignition systems are no longer suitable for these requirements. The core components of an ignition system are the ignition coil and the switching device. Increasing the energy of the ignition coil allows the spark plug to generate a spark with sufficient energy, which is the basic condition for an ignition system to adapt to the operation of modern engines.

[0003] In practical engineering applications, the traditional connection components used for the secondary coil and the high-voltage output terminal include a cylindrical secondary output terminal and a secondary connecting piece with a circular hole. The secondary output terminal is inserted into the circular hole to achieve the connection between the secondary coil and the high-voltage output terminal.

[0004] However, this type of secondary output terminal and secondary connector has a small contact range and requires high dimensional accuracy, resulting in a high rate of poor contact between the secondary output terminal and the secondary connector. Utility Model Content

[0005] (I) The problem to be solved by this utility model is: how to increase the contact range between the secondary output terminal and the secondary connecting piece, and reduce the contact failure rate between the secondary output terminal and the secondary connecting piece.

[0006] (II) Technical Solution

[0007] This utility model provides a connection assembly for a secondary coil and a high-voltage output terminal, including a secondary output terminal and a secondary connecting piece;

[0008] The secondary connecting piece is provided with mounting holes, which include a connected circular hole and a plurality of insertion holes, and the plurality of insertion holes are arranged around the axis of the circular hole;

[0009] The secondary output terminal includes a column and multiple plug-in pins, the column being adapted to the circular hole, and the plug-in pins corresponding one-to-one with the plug-in hole;

[0010] The cross-section of the plug is petal-shaped, and the width of the plug on the side closest to the column is smaller than the width of the other side.

[0011] According to one embodiment of the present invention, the socket is provided with six holes.

[0012] According to one embodiment of the present invention, the plug post and the corresponding socket are interference-fitted.

[0013] According to one embodiment of the present invention, the interference fit between the plug post and the corresponding socket is 0.11 mm.

[0014] According to one embodiment of the present invention, each of the plug-in pins has a winding groove on the side away from the pin body for winding a secondary coil.

[0015] According to one embodiment of the present invention, the end face of the column is provided with a top column coaxially arranged therewith, and the diameter of the top column is smaller than the diameter of the column.

[0016] According to one embodiment of the present invention, the end of the top post away from the column body is provided with a chamfer.

[0017] According to one embodiment of the present invention, the secondary connecting piece includes a first piece, a second piece, a third piece, a fourth piece, and a fifth piece connected in sequence;

[0018] The first piece, the second piece, the third piece, the fourth piece, and the fifth piece form a U-shaped structure, and the mounting hole is provided on the third piece.

[0019] According to one embodiment of the present invention, the secondary connection piece further includes an output piece, which is disposed at the end of the first piece body away from the second piece body, and is used for electrical connection with the high voltage output terminal.

[0020] According to one embodiment of the present invention, the connection points between the first piece and the second piece, the connection points between the second piece and the third piece, the connection points between the third piece and the fourth piece, and the connection points between the fourth piece and the fifth piece all adopt arc-shaped transitions.

[0021] The beneficial effects of this utility model are:

[0022] By setting multiple plug-in pins and multiple corresponding and compatible sockets on the secondary connecting plate, the contact area is increased compared to the traditional secondary output terminal of the column and the secondary connecting plate with a circular hole. The two opposite sidewalls of each plug-in pin can contact the two opposite sidewalls of the corresponding socket, increasing the contact area. Furthermore, since each plug-in pin is petal-shaped, the width of the side of the plug-in pin closest to the column is smaller than the width of the other side. Each plug-in pin can achieve connection with the corresponding socket. Even if one or more of them are larger or smaller, the plug-in pin and the socket can still fit tightly, thereby reducing the occurrence of poor contact. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 A top view of the connecting component provided in an embodiment of this utility model;

[0025] Figure 2 A front view of the secondary output terminal provided in an embodiment of this utility model;

[0026] Figure 3 A top view of the secondary output terminal provided in an embodiment of this utility model;

[0027] Figure 4 A top view of the secondary connecting piece provided in an embodiment of this utility model.

[0028] Icons: 1. Secondary output terminal; 101. Column; 102. Plug-in post; 103. Winding groove; 104. Top post; 2. Secondary connecting piece; 201. First piece; 202. Second piece; 203. Round hole; 204. Socket; 205. Fourth piece; 206. Fifth piece; 207. Output piece; 208. Third piece. Detailed Implementation

[0029] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] like Figures 1-4 As shown, one embodiment of this utility model provides a connection assembly for a secondary coil and a high-voltage output terminal, including a secondary output terminal 1 and a secondary connecting piece 2;

[0031] The secondary connecting piece 2 is provided with mounting holes, which include a connected circular hole 203 and a plurality of insertion holes 204, and the plurality of insertion holes 204 are arranged around the axis of the circular hole 203.

[0032] The secondary output terminal 1 includes a column 101 and multiple plug-in pins 102. The column 101 is adapted to the round hole 203, and the plug-in pins 102 correspond one-to-one with the plug-in hole 204.

[0033] The cross-section of the plug post 102 is petal-shaped, and the width of the plug post 102 on the side closest to the post body 101 is smaller than the width of the other side.

[0034] By setting multiple plug-in pins 102 and multiple sockets 204 on the secondary connecting piece 2 that correspond one-to-one with and are adapted to the plug-in pins 102, the contact area is increased compared to the traditional cylindrical secondary output terminal and the secondary connecting piece 2 with a circular hole 203. The two opposite sidewalls of each plug-in pin 102 can contact the two opposite sidewalls of the corresponding socket 204, increasing the contact area. Furthermore, since each plug-in pin 102 is petal-shaped, the width of the side of the plug-in pin 102 closest to the column 101 is smaller than the width of the other side. Each plug-in pin 102 can be connected to the corresponding socket 204. Even if one or more of them are larger or smaller, the plug-in pin 102 and the socket 204 can still fit tightly together, thereby reducing the occurrence of poor contact.

[0035] Preferably, the two opposite sidewalls of each plug post 102 are curved surfaces, which can further increase the contact area with the plug hole 204.

[0036] Optionally, the two opposite sidewalls of each plug post 102 are both planes, which does not deviate from the design concept of this utility model, and therefore should fall within the protection scope of this utility model.

[0037] According to one embodiment of the present invention, the socket 204 is provided with six holes.

[0038] When there are 6 sockets 204, the fixing, conductivity and transformation effects are all optimal.

[0039] It should be noted that in this embodiment, the insertion hole 204 and the round hole 203 are directly stamped as a single piece.

[0040] Of course, in this embodiment, the number of sockets 204 can also be between 2-5 or 7-9.

[0041] According to one embodiment of the present invention, there is an interference fit between the plug post 102 and the corresponding plug hole 204.

[0042] The interference fit between the plug post 102 and the corresponding socket 204 is between 0.08mm and 0.15mm, which can ensure a tight fit and reduce the possibility of poor contact, while also preventing low installation efficiency due to excessive tightness.

[0043] Preferably, the interference fit between the plug post 102 and the corresponding socket 204 is 0.11 mm.

[0044] According to one embodiment of the present invention, each plug post 102 has a winding groove 103 for winding a secondary coil on the side away from the post body 101.

[0045] The winding groove 103 allows the secondary coil to be wound around it, which serves as a limit to prevent it from falling off the plug post 102 or being displaced.

[0046] Furthermore, each winding groove 103 is arc-shaped. The edges of the arc-shaped winding groove 103 are less likely to scratch the wire of the secondary coil, thus protecting the secondary coil.

[0047] Of course, in this embodiment, the chamfering at both ends of each winding groove 103 can also protect the secondary coil. This does not deviate from the design concept of this utility model, and therefore should fall within the protection scope of this utility model.

[0048] According to one embodiment of the present invention, the end face of the column 101 is provided with a top column 104 coaxially arranged therewith, and the diameter of the top column 104 is smaller than the diameter of the column 101.

[0049] According to one embodiment of the present invention, the end of the top post 104 away from the post body 101 is provided with a chamfer.

[0050] Preferably, all cross-sectional dimensions of the plug post 102 are the same, so that even if the plug post 102 is not plugged in properly due to negligence of the staff, it can still fit tightly with the corresponding socket 204, reducing the occurrence of poor contact.

[0051] Optionally, the closer the plug post 102 is to the top post 104, the smaller its cross-sectional size. This method allows the plug post 102 to be quickly and accurately guided when it is initially inserted into the corresponding socket 204, thus improving assembly efficiency.

[0052] To prevent the plug post 102 from directly penetrating the socket 204 and damaging it due to excessive force during insertion, a stop block can be connected to the end of the plug post 102 away from the top post 104. The size of the stop block is larger than the size of the socket 204, thereby reducing the occurrence of penetration through the socket 204.

[0053] According to one embodiment of the present invention, the secondary connecting piece 2 includes a first piece 201, a second piece 202, a third piece 208, a fourth piece 205 and a fifth piece 206 connected in sequence;

[0054] The first piece 201, the second piece 202, the third piece 208, the fourth piece 205 and the fifth piece 206 form a zigzag structure, and the mounting hole is located on the third piece 208.

[0055] According to one embodiment of the present invention, the secondary connection piece 2 further includes an output piece 207, which is disposed at the end of the first piece 201 away from the second piece 202, and is used to electrically connect to the high voltage output terminal.

[0056] Furthermore, the third piece 208 is detachably connected to the second piece 202 and the fourth piece 205 via mounting components.

[0057] The mounting components include concave grooves formed at the ends of the second piece 202 and the fourth piece 205 near the third piece 208. The thickness of the concave grooves is adapted to the thickness of the third piece 208. A receiving groove is formed on the surface of the third piece 208, and a rubber strip is fixedly connected in the receiving groove. By inserting the third piece 208 into the concave groove, the third piece 208 is connected to the second piece 202 and the fourth piece 205. The rubber strip prevents the third piece 208 from slipping out of the concave groove. In addition, due to the design of the rubber strip, the side of the third piece 208 facing away from the rubber strip can be tightly fitted with the second piece 202 and the fourth piece 205 without affecting its normal conductivity, voltage transformation and other functions. The third piece 208 can be replaced as needed, and the secondary output terminal 1 with a number of plug-in posts 102 can be replaced accordingly, which is highly practical.

[0058] According to one embodiment of the present invention, the connection between the first piece 201 and the second piece 202, the connection between the second piece 202 and the third piece 208, the connection between the third piece 208 and the fourth piece 205, and the connection between the fourth piece 205 and the fifth piece 206 all adopt an arc-shaped transition.

[0059] The use of curved transitions makes it less likely for workers to be scratched during assembly, and the curved transitions are also more aesthetically pleasing.

[0060] It should be noted that the secondary connecting piece 2 is installed on the high-voltage frame of the ignition coil, and the end of the secondary coil is wound on the secondary output terminal 1. After the secondary coil is wound, the secondary output terminal 1 is inserted into the mounting hole of the secondary connecting piece 2, and then epoxy resin is injected. The main purpose of epoxy resin injection is to fix the coil and prevent high-voltage breakdown, and to play the role of insulation and heat protection. This is existing technology and will not be described in detail here.

[0061] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0062] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0063] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A connection assembly for a secondary coil and a high-voltage output terminal, characterized in that, It includes a secondary output terminal (1) and a secondary connection piece (2); The secondary connecting piece (2) is provided with a mounting hole, which includes a connected circular hole (203) and a plurality of insertion holes (204), and the plurality of insertion holes (204) are arranged around the axis of the circular hole (203); The secondary output terminal (1) includes a column (101) and a plurality of plug-in pins (102). The column (101) is adapted to the circular hole (203), and the plug-in pins (102) correspond one-to-one with the plug-in hole (204). The cross-section of the plug post (102) is petal-shaped, and the width of the plug post (102) on the side closest to the column body (101) is smaller than the width of the other side.

2. The connection assembly for a secondary coil and a high-voltage output terminal according to claim 1, characterized in that, The socket (204) is provided with six.

3. The connection assembly for a secondary coil and a high-voltage output terminal according to claim 1, characterized in that, The insertion post (102) and the corresponding insertion hole (204) are interference-fitted.

4. The connection assembly between the secondary coil and the high-voltage output terminal according to claim 3, characterized in that, The interference fit between the plug post (102) and the corresponding socket (204) is 0.11 mm.

5. The connection assembly for a secondary coil and a high-voltage output terminal according to claim 1, characterized in that, Each of the plug-in pins (102) has a winding groove (103) on the side away from the pin (101) for winding a secondary coil.

6. The connection assembly between the secondary coil and the high-voltage output terminal according to claim 1, characterized in that, The end face of the column (101) is provided with a top column (104) coaxially arranged with it, and the diameter of the top column (104) is smaller than the diameter of the column (101).

7. The connection assembly between the secondary coil and the high-voltage output terminal according to claim 6, characterized in that, The top post (104) has a chamfer at the end away from the column (101).

8. The connection assembly for a secondary coil and a high-voltage output terminal according to claim 1, characterized in that, The secondary connecting piece (2) includes a first piece (201), a second piece (202), a third piece (208), a fourth piece (205), and a fifth piece (206) connected in sequence; The first piece (201), the second piece (202), the third piece (208), the fourth piece (205) and the fifth piece (206) form a U-shaped structure, and the mounting hole is provided on the third piece (208).

9. The connection assembly for a secondary coil and a high-voltage output terminal according to claim 8, characterized in that, The secondary connection piece (2) further includes an output piece (207), which is located at the end of the first piece body (201) away from the second piece body (202) and is used to be electrically connected to the high voltage output terminal.

10. The connection assembly for a secondary coil and a high-voltage output terminal according to claim 8, characterized in that, The connection points between the first piece (201) and the second piece (202), the connection points between the second piece (202) and the third piece (208), the connection points between the third piece (208) and the fourth piece (205), and the connection points between the fourth piece (205) and the fifth piece (206) all adopt arc-shaped transitions.

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