Combined coil structure

Abstract

The utility model provides a combined coil structure which comprises two cuboid magnetic cores of the same structure, a connecting part is arranged in the center of the bottom face of each cuboid magnetic core, and supporting baffles parallel to the end faces extend out of the two end faces of each cuboid magnetic core. The connecting part is used for connecting the two cuboid magnetic cores in a cross mode, and the four supporting baffles surround the outer sides of the two cuboid magnetic cores. The two cuboid magnetic cores are each sleeved with a segmented coil, each segmented coil comprises two coil parts, and the two coil parts are connected through a wire on the back face of the connecting part. The four supporting baffles are sleeved with the annular coil. The pin frame is parallel to the bottom face of the cuboid magnetic core and installed on the same side of the four supporting baffles, and the wire ends of the segmented coils and the wire ends of the annular coils are connected with the corresponding pins respectively. The combined coil structure provided by the utility model can integrate coil antennas in three directions, is simple in structure, facilitates winding, and can improve the processing efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to coil part technical field especially relates to a combined coil structure. BACKGROUND

[0002] With the development of automobile industry, the form of automobile key is more and more various, in order to increase user experience, the appearance of key is often designed to be more small and exquisite, therefore higher requirement is put forward to the space tightness inside key. The existing high-order supermode key needs to install three directional antenna coil parts, therefore the space occupied is large. The existing one integrates three directional coil antenna parts, has cross-shaped magnetic core, but when winding, the winding equipment specially made is needed, and the protruding cantilever will cause hindrance when winding, leading to poor processing efficiency. SUMMARY

[0003] In order to solve the problems in the background art, the purpose of the utility model is to provide a combined coil structure, integrating three directional coil antennas, and improving processing efficiency.

[0004] In order to achieve the above purpose, the technical scheme of the utility model is as follows:

[0005] A combined coil structure comprises:

[0006] Two cuboid magnetic cores of the same structure are provided with a connecting part at the center position of the bottom surface of the cuboid magnetic core, and the two end surfaces of the cuboid magnetic core are extended with support baffles parallel to the end surfaces; the connecting part is used for cross connecting the two cuboid magnetic cores, and the four support baffles are arranged outside the two cuboid magnetic cores.

[0007] Segmented coil, one segmented coil is sleeved on each of the two cuboid magnetic cores, the segmented coil comprises two coil parts, and the two coil parts are connected by a segment of wire at the back of the connecting part.

[0008] Ring coil, the ring coil is sleeved on the four support baffles.

[0009] Four pin frames, the pin frame is parallel to the bottom surface of the cuboid magnetic core, and is installed on the same side of the four support baffles, and the wire heads of the segmented coil and the ring coil are connected with corresponding pins respectively.

[0010] Further, the pin frame is connected with a cuttable strip, the strip is provided with a positioning structure, and a preset distance is arranged between the positioning structure and the connecting part.

[0011] Further, the connecting part is connected through an adhesive.

[0012] Further, the connecting part is provided with a groove, and the width of the groove is greater than the width of the bottom surface of the cuboid magnetic core.

[0013] The application has the beneficial effects that the two cuboid magnetic cores are directly bonded or bonded through the relatively loose grooves arranged on the connecting part, the processing difficulty of the two cuboid magnetic cores when combined can be reduced, and the generation of defective products can be reduced. The positioning through the strip on the pin frame ensures the winding precision of the two cuboid magnetic cores and the combination precision when installed. The positioning structure on the strip can have a synergistic effect with the grooves of the connecting part, the installation difficulty is reduced under the condition of ensuring the installation precision, and the processing efficiency can be further improved. Moreover, the winding part of the two cuboid magnetic cores has no protruding cantilever, and no obstruction is generated during winding, a special winding device does not need to be used, and the equipment cost can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a top view of the combined coil structure in the embodiment of the application;

[0015] Fig. 2 It is a top view of the cuboid magnetic core in the embodiment of the application;

[0016] Fig. 3 It is a side view of the cuboid magnetic core in the embodiment of the application.

[0017] Among them, 1: cuboid magnetic core; 2: connecting part; 3: support baffle; 4: segmented coil; 5: ring-shaped coil; 6: pin frame; 7: strip; 8: side ear; 21: groove; 41: coil part; 42: wire; 71: positioning structure. DETAILED DESCRIPTION

[0018] It should be understood that the specific embodiments described herein are merely used to explain the application, and are not used to limit the application.

[0019] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0020] It should be noted that all directionality indications (such as up, down, left, right, front, back, …) in the embodiments of the application are only used to explain the relative positional relationship, movement condition and the like between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly. The connection can be direct connection or indirect connection.

[0021] In addition, the technical solutions among the various embodiments can be combined with each other, but must be based on the fact that a person of ordinary skill in the art can realize the combination, and when the combination of the technical solutions contradicts each other or cannot be realized, it should be considered that the combination of the technical solutions does not exist and is not within the protection scope required by the utility model.

[0022] The combination Figs. 1 to 3 is described below. The combined coil structure provided by the embodiment includes two cuboid magnetic cores 1, segmented coils 4, a ring-shaped coil 5, and four pin frames 6.

[0023] A connecting portion 2 is arranged at the center of the bottom surface of the cuboid magnetic core 1, and both end surfaces of the cuboid magnetic core 1 extend support baffles 3 parallel to the end surfaces; the connecting portion 2 is used to cross-connect the two cuboid magnetic cores 1; and the four support baffles 3 are arranged outside the two cuboid magnetic cores 1.

[0024] The connecting portion 2 can be a connecting area arranged on the cuboid magnetic core 1, which forms the center of the cross, and preferably, the area is glued to enable the cuboid magnetic core 1 to be bonded. Preferably, a latch structure is arranged on the connecting portion 2 to facilitate assembly of the two cuboid magnetic cores 1. The support baffles 3 are preferably rectangular and can be considered as part of the cuboid magnetic core 1 and are manufactured by integral molding.

[0025] The combination Fig. 2 and Fig. 3 It can be seen that one segmented coil 4 is arranged on each of the two cuboid magnetic cores 1, and the segmented coil 4 includes two coil portions 41, and the two coil portions 41 are connected by a wire 42 at the back of the connecting portion 2.

[0026] The segmented coil 4 can be formed when winding the cuboid magnetic core 1, and the winding is first performed on one end of the cuboid magnetic core 1. After the winding on one end of the cuboid magnetic core 1 is completed, the wire is arranged from the back of the connecting portion 2 and is moved obliquely to the other end of the cuboid magnetic core 1, and then the other part of the segmented coil 4 is completed. After the winding of the segmented coil 4 on both cuboid magnetic cores 1 is completed, the connecting portion 2 is assembled, so that the winding efficiency can be improved, and a special winding machine does not need to be used, thereby reducing the equipment cost.

[0027] The ring-shaped coil 5 is arranged on the four support baffles 3.

[0028] The winding is performed after the two cuboid magnetic cores 1 are connected in a cross shape, and the ring-shaped coil 5 is completed, so that the combined coil structure has coils in three directions, realizes integration of coil antenna parts, and reduces the overall volume. The ring-shaped coil 5 surrounds the outside of the support baffles 3 and the cuboid magnetic core 1 as a whole, and the support baffles 3 and the cuboid magnetic core 1 as a whole can be considered as a magnetic core part of the ring-shaped coil 5.

[0029] The pin frame 6 is parallel to the bottom surface of the cuboid magnetic core 1 and is installed on the same side of the four support baffles 3. The wire heads of the segmented coil 4 and the ring coil 5 are respectively connected to corresponding pins.

[0030] In this embodiment, two cuboid magnetic cores 1 are combined to form a cross-shaped structure, and support baffles 3 are arranged at the ends of the cuboid magnetic cores 1 to support the ring coil 5, so that the coil antennas in three directions are integrated into one structure. Moreover, the two cuboid magnetic cores 1 can respectively perform the winding operation of the segmented coil 4, thereby improving the winding efficiency. In addition, the cuboid magnetic core 1 can be wound using existing winding equipment, thereby reducing equipment investment and manufacturing cost.

[0031] In this embodiment, the pin frame 6 is connected with a cuttable strip 7, and the strip 7 is provided with a positioning structure 71. The positioning structure 71 is arranged at a preset distance from the connecting part 2.

[0032] The strip 7 and the pin frame 6 can be integrally formed, and preferably are cut after the assembly of the two cuboid magnetic cores 1. The positioning structure 71 can be a positioning hole or a positioning groove. The distance between the positioning structure 71 and the connecting part 2 is fixed, so that the position of the connecting part 2 can be determined by the positioning structure 71, the cuboid magnetic core 1 is positioned, and the assembly of the two cuboid magnetic cores 1 is completed by using a positioning jig matched with the positioning structure 71. The positioning structure 71 arranged on the strip 7 of the pin frame 6 can reduce the structural complexity of the cuboid magnetic core 1, reduce the production cost of the cuboid magnetic core 1, reduce the obstruction of the cuboid magnetic core 1 during winding, and improve the winding efficiency. In addition, the cuboid magnetic core 1 has a simple structure, is easier to position, does not need to be extruded by external force, and is easier to assemble, so that the assembly process can be completed by automatic setting. The positioning structure 71 arranged on the pin frame 6 can also be used for positioning during winding of the cuboid magnetic core 1, thereby improving the position accuracy of the segmented coil 4.

[0033] In this embodiment, the connecting part 2 is connected by an adhesive.

[0034] The adhesive can be any adhesive used in the field of coil antenna production. Compared with other methods, the two cuboid magnetic cores 1 are connected by the adhesive, which can reduce the processing difficulty, improve the processing efficiency and success rate. Fig. 2 As shown in the figure, the origin in the connecting part 2 is the dispensing position.

[0035] In this embodiment, the connecting part 2 is provided with a groove 21, and the width of the groove 21 is greater than the width of the bottom surface of the cuboid magnetic core 1.

[0036] In this embodiment, the connecting part 2 is provided with a groove 21, and the width of the groove 21 is greater than the width of the bottom surface of the cuboid magnetic core 1. Fig. 2As shown, the width of the cuboid magnetic core 1 is D, and the width of the groove 21 is d. The groove 21 is arranged to make the cross-shaped structure formed after the two cuboid magnetic cores 1 are bonded have a thinner center, thereby further reducing the volume of the combined coil structure. The combined coil structure provided in the embodiment is not positioned by the connecting part 2, so the width of the groove 21 can be greater than or equal to the width of the bottom surface of the cuboid magnetic core 1, and preferably the width of the groove 21 is greater than the width of the bottom surface of the cuboid magnetic core 1, which facilitates the bonding installation of the two cuboid magnetic cores 1, and the gap can accommodate excess adhesive and prevent the two cuboid magnetic cores 1 from colliding and deviating when combined.

[0037] In the embodiment, the groove 21 and the bottom surface of the cuboid magnetic core 1 are connected by an arc surface.

[0038] The arc surface not only optimizes the structure of the cuboid magnetic core 1, reduces stress concentration of the cuboid magnetic core 1, and improves the strength of the cuboid magnetic core 1, but also facilitates the automated splicing and installation of the cuboid magnetic core 1, has higher fault tolerance, and thus reduces the probability of defective products. Further, the gap formed by the arc surface can also accommodate excess adhesive, thereby improving the bonding strength of the two cuboid magnetic cores 1.

[0039] In summary, the two cuboid magnetic cores 1 are directly bonded or bonded by the relatively loose groove 21 provided on the connecting part 2, which can reduce the processing difficulty of the two cuboid magnetic cores 1 when combined and reduce the generation of defective products. The lead frame 6 is positioned by the strip 7, which ensures the winding accuracy of the two cuboid magnetic cores 1 and the combination accuracy during installation. The positioning structure 71 on the strip 7 can cooperate with the groove 21 of the connecting part 2 to reduce the installation difficulty under the condition of ensuring the installation accuracy, thereby further improving the processing efficiency.

[0040] The above only describes the preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A combined coil structure, characterized by The utility model relates to a kind of magnetic core, including: Two cuboid magnetic cores (1), connecting portion (2) is arranged in the center position of the bottom surface of the cuboid magnetic core (1), and the two end surfaces of the cuboid magnetic core (1) are extended with support baffle (3) parallel to the end surface;The connecting portion (2) is used to cross-connect two cuboid magnetic cores (1), and four support baffles (3) are surrounded outside two cuboid magnetic cores (1); Segmented coil (4), one segmented coil (4) is sleeved on two cuboid magnetic cores (1), and the segmented coil (4) includes two coil parts (41), and two coil parts (41) are connected by a section of wire (42) on the back of the connecting portion (2); Annular coil (5), the annular coil (5) is sleeved on four support baffles (3); Four pin frames (6), the pin frame (6) is parallel to the bottom surface of the cuboid magnetic core (1), and is installed on the same side of four support baffles (3), and the wire head of the segmented coil (4) and the annular coil (5) is connected with corresponding pin respectively.

2. The combined coil structure of claim 1, wherein, The pin frame (6) is connected with cuttable strip (7), and the strip (7) is provided with positioning structure (71), and the positioning structure (71) is provided with a predetermined distance between the connecting portion (2).

3. The combined coil structure of claim 1, wherein, The connecting portion (2) is connected by adhesive.

4. The combined coil structure of claim 3, wherein, The connecting portion (2) is provided with groove (21), and the width of the groove (21) is greater than the width of the bottom surface of the cuboid magnetic core (1).

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