Secondary forming ignition coil

Abstract

The utility model belongs to the technical field of ignition coils, and particularly relates to a secondary forming ignition coil which comprises a shell, a clamping groove is formed in the inner wall of the bottom of the shell, and an iron core is movably contacted with the clamping groove. According to the utility model, the primary coil is wound on the outer side of the iron core, the primary coil cannot slip off from the iron core under the limiting action of the limiting sleeve plate, then the pull ring is pulled upwards, the pull ring drives the bayonet lock to move through the flexible steel rope, the bayonet lock slides on the corresponding fixed rod and compresses the spring, and the coil sleeve is sleeved on the iron core. The coil sleeve and the limiting sleeve plate are connected in a sleeved mode, pulling force on the pull ring is released, the spring in the compressed state is reset, the spring drives the corresponding clamping pin to move, the clamping pin and the fixing groove are clamped, the coil sleeve and the iron core cannot move relatively, relative fixing is achieved, and then the secondary coil is wound in the wire groove of the coil sleeve. And meanwhile, through multi-side fixation, the coil sleeve and the iron core are fixed more firmly.

Description

Technical Field

[0001] The utility model relates to the technical field of ignition coils, in particular to a secondary forming ignition coil. Background Technique

[0002] In an automobile engine, an ignition coil is widely used. Usually, there are two sets of coils in an ignition coil, a primary coil and a secondary coil. In the market, for a secondary forming ignition coil, resin is usually poured into the outer shell for fixation after the coil assembly is completed;

[0003] However, during assembly, since two sets of coils need to be assembled, the two sets of coils cannot be relatively fixed before pouring, resulting in inconvenient assembly and low assembly efficiency. Even if some ignition coils can relatively fix the two sets of coils, the coil sleeve can only be fixed to the iron core on one side, with poor stability. Therefore, we propose a secondary forming ignition coil to solve the above problems. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a secondary forming ignition coil, which solves the problems raised in the above background technique.

[0006] (II) Technical Solutions

[0007] The utility model specifically adopts the following technical solutions to achieve the above purposes:

[0008] The secondary forming ignition coil includes a housing. A clamping groove is formed on the bottom inner wall of the housing. An iron core is in movable contact with the clamping groove. A primary coil is wound around the iron core. A coil sleeve is movably sleeved on the iron core. A wire groove is formed on the coil sleeve. A secondary coil is arranged in the wire groove. Two limiting sleeve plates are arranged on the iron core. A plurality of fixing grooves are formed in an annular shape on the iron core. A plurality of cavities are formed on the coil sleeve. A fixing rod is fixedly connected to the inner wall of one side of the cavity. A clamping pin is slidably connected to the fixing rod. The clamping pin is clamped with the corresponding fixing groove. A spring is welded between the end of the clamping pin and the inner wall of one side of the corresponding cavity. A fixed pulley is rotatably connected to the inner wall of one side of the cavity. A flexible steel rope is fixedly connected to the end of the clamping pin. The end of the flexible steel rope extends outside the coil sleeve and is fixedly connected to a pull ring.

[0009] Further, the spring is movably sleeved on the corresponding fixing rod.

[0010] Further, a plurality of limiting grooves are formed in an annular shape on the bottom of the housing. A limiting post is in movable contact with the limiting groove. The end of the limiting post is fixedly connected to the bottom of the coil sleeve.

[0011] Further, a guiding hole is formed on an inner wall of one side of the cavity, and the guiding hole is slidably connected to a corresponding latch pin.

[0012] Further, a top cover is in movable contact with the top of the housing, and a socket is provided on one side of the top cover.

[0013] Further, a through hole is formed in the limiting sleeve plate.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the present utility model provides a secondary molding ignition coil, which has the following beneficial effects:

[0016] In the present utility model, the primary coil is first wound around the outside of the iron core. Under the limiting action of the limiting sleeve plate, the primary coil cannot slip off the iron core. Then, the pull ring is pulled upward. The pull ring drives the latch pin to move through the flexible steel wire. The latch pin slides on the corresponding fixing rod and compresses the spring. The coil sleeve is sleeved on the iron core so that the coil sleeve is sleeved with the limiting sleeve plate. Then, the pulling force on the pull ring is released, and the spring in the compressed state resets. The spring drives the corresponding latch pin to move, so that the latch pin is clamped with the fixing groove, and the coil sleeve and the iron core cannot move relative to each other, realizing relative fixation. Then, the secondary coil can be wound in the wire groove of the coil sleeve. At the same time, through multi-side fixation, the fixation between the coil sleeve and the iron core is more reliable. Description of the drawings

[0017] Figure 1 is a three-dimensional structure diagram of the present utility model;

[0018] Figure 2 is a three-dimensional structure diagram of the cut-open housing of the present utility model;

[0019] Figure 3 is the present utility model Figure 2 in a partial three-dimensional structure diagram;

[0020] Figure 4 is a three-dimensional structure diagram of the connection of the coil sleeve, the iron core and the limiting column of the present utility model;

[0021] Figure 5 is a partial three-dimensional structure diagram of the present utility model;

[0022] Figure 6 is a three-dimensional structure diagram of the cut-open coil sleeve of the present utility model.

[0023] In the figure: 1. Housing; 2. Card slot; 3. Iron core; 4. Primary coil; 5. Coil sleeve; 6. Secondary coil; 7. Limit sleeve plate; 8. Fixed slot; 9. Cavity; 10. Fixed rod; 11. Pin; 12. Spring; 13. Fixed pulley; 14. Flexible steel cable; 15. Pull ring; 16. Limit slot; 17. Limit post; 18. Through hole; 19. Top cover; 20. Socket. Specific implementation mode

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Embodiment

[0025] As Figures 1-6 shown, a secondary forming ignition coil proposed by an embodiment of the present invention includes a housing 1. A card slot 2 is opened on the bottom inner wall of the housing 1. An iron core 3 is in movable contact with the card slot 2. A primary coil 4 is wound around the iron core 3. A coil sleeve 5 is movably sleeved on the iron core 3. A wire groove is opened on the coil sleeve 5, and a secondary coil 6 is arranged in the wire groove. Two limit sleeve plates 7 are arranged on the iron core 3. A plurality of fixed slots 8 are annularly opened on the iron core 3. A plurality of cavities 9 are opened on the coil sleeve 5. A fixed rod 10 is fixedly connected to the inner wall of one side of the cavity 9. A pin 11 is slidably connected to the fixed rod 10. The pin 11 is clamped with the corresponding fixed slot 8. A spring 12 is welded between the end of the pin 11 and the inner wall of one side of the corresponding cavity 9. A fixed pulley 13 is rotatably connected to the inner wall of one side of the cavity 9. The end of the pin 11 is fixedly connected with a flexible steel cable 14. The end of the flexible steel cable 14 extends outside the coil sleeve 5 and is fixedly connected with a pull ring 15. First, the primary coil 4 is wound around the outside of the iron core 3. Under the limiting action of the limit sleeve plates 7, the primary coil 4 cannot slip off the iron core 3. Then, the pull ring 15 is pulled upward. The pull ring 15 drives the pin 11 to move through the flexible steel cable 14. The pin 11 slides on the corresponding fixed rod 10 and compresses the spring 12. The coil sleeve 5 is sleeved on the iron core 3 so that the coil sleeve 5 is sleeved with the limit sleeve plates 7. Then, the pulling force on the pull ring 15 is released. The spring 12 in the compressed state resets. The spring 12 drives the corresponding pin 11 to move so that the pin 11 is clamped with the fixed slot 8, making the coil sleeve 5 and the iron core 3 unable to move relative to each other, realizing relative fixation. Then, the secondary coil 6 is wound in the wire groove of the coil sleeve 5. At the same time, through multi-sided fixation, the fixation between the coil sleeve 5 and the iron core 3 is more reliable.

[0026] In some embodiments, the spring 12 is movably sleeved on the corresponding fixed rod 10, and the spring 12 serves a resetting function.

[0027] In some embodiments, a plurality of limiting grooves 16 are annularly formed at the bottom of the housing 1, and a limiting post 17 is in movable contact with the limiting grooves 16. The end of the limiting post 17 is fixedly connected to the bottom of the coil sleeve 5. The limiting post 17 serves a limiting function.

[0028] In some embodiments, a guiding hole is formed on an inner wall of one side of the cavity 9, and the corresponding latch 11 is slidably connected to the guiding hole. The latch 11 serves a fixing function.

[0029] In some embodiments, a top cover 19 is in movable contact with the top of the housing 1. A socket 20 is provided on one side of the top cover 19. A through hole 18 is formed in the limiting sleeve plate 7. The top cover 19 serves a sealing function.

[0030] Working principle or structural principle: When assembling, first wind the primary coil 4 around the outside of the iron core 3. Under the limiting action of the limiting sleeve plate 7, the primary coil 4 cannot slip off the iron core 3. Then pull up the pull ring 15. The pull ring 15 drives the latch 11 to move through the flexible steel cable 14. The latch 11 slides on the corresponding fixed rod 10 and compresses the spring 12. Sleeve the coil sleeve 5 on the iron core 3 so that the coil sleeve 5 is sleeved with the limiting sleeve plate 7. Then release the pulling force on the pull ring 15. The spring 12 in the compressed state resets. The spring 12 drives the corresponding latch 11 to move so that the latch 11 is engaged with the fixed groove 8, making the coil sleeve 5 and the iron core 3 unable to move relative to each other, realizing relative fixation. Then wind the secondary coil 6 around the wire groove of the coil sleeve 5. At the same time, through multi-sided fixation, the coil sleeve 5 and the iron core 3 are fixed more firmly. Then place the coil sleeve 5 into the limiting groove 16 in the housing 1 through the limiting post 17, and fix the top cover 19 and the housing 1. Thus, during assembly, it is simple and convenient, and has high stability.

[0031] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Secondary formed ignition coil, comprising a housing (1), characterized in that: A clamping groove (2) is formed in the inner wall of the bottom of the housing (1), a core (3) is in movable contact with the clamping groove (2), a primary coil (4) is wound around the core (3), a coil sleeve (5) is movably sleeved on the core (3), a wire groove is formed in the coil sleeve (5), a secondary coil (6) is arranged in the wire groove, two limiting sleeve plates (7) are arranged on the core (3), a plurality of fixing grooves (8) are formed in the core (3) in a circular shape, a plurality of cavities (9) are formed in the coil sleeve (5), a fixing rod (10) is fixedly connected to the inner wall of one side of the cavity (9), a latch (11) is slidably connected to the fixing rod (10), the latch (11) is clamped with the corresponding fixing groove (8), a spring (12) is welded between the end of the latch (11) and the inner wall of one side of the corresponding cavity (9), a fixed pulley (13) is rotatably connected to the inner wall of one side of the cavity (9), an end of the latch (11) is fixedly connected with a flexible steel cable (14), and an end of the flexible steel cable (14) extends out of the coil sleeve (5) and is fixedly connected with a pull ring (15).

2. The secondary forming ignition coil according to claim 1, wherein: The spring (12) is movably sleeved on the corresponding fixing rod (10).

3. The secondary-molded ignition coil according to claim 1, wherein: A plurality of limiting grooves (16) are formed in the bottom of the housing (1) in a circular shape, a limiting post (17) is in movable contact with the limiting groove (16), and an end of the limiting post (17) is fixedly connected with the bottom of the coil sleeve (5).

4. The secondary molding ignition coil according to claim 1, characterized in that: A guiding hole is formed in the inner wall of one side of the cavity (9), and the guiding hole is slidably connected with the corresponding latch (11).

5. The secondary forming ignition coil according to claim 1, characterized in that: A top cover (19) is in movable contact with the top of the housing (1), and a socket (20) is arranged on one side of the top cover (19).

6. The secondary forming ignition coil according to claim 1, wherein: A through hole (18) is formed in the limiting sleeve plate (7).

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