Needle selector inductance coil and needle selector

Abstract

The utility model relates to the technical field of needle selectors, and discloses an inductance coil of a needle selector, which comprises an insulating framework, an iron core fixedly arranged in the middle of the insulating framework, a spiral coil wound on the insulating framework and two leads, one end of the lead and one end of the spiral coil are wound on the corresponding binding posts; a pair of clamping grooves is formed in the end portion of the insulation framework, and the end, connected with the binding post, of the wire is clamped in the clamping grooves. The needle selector comprises the inductance coil of the needle selector. The problems that in the background technology, an existing needle selector inductance coil is low in production efficiency and complex in production process, and wires are prone to breakage and off-line are solved.

Description

Technical Field

[0001] This utility model relates to the field of needle selector technology, and in particular to a needle selector inductor coil and a needle selector. Background Technology

[0002] The inductor coil of the existing needle selector is shown in the instruction manual. Figures 10 to 12 The device includes an insulating frame 1, a spiral coil 3, and a wire 4. The insulating frame 1 has two notches 101 formed at its ends and two through holes 102 connecting the two notches 101. The existing manufacturing process for the inductor coil of a needle selector is roughly as follows: first, copper wire is wound onto the insulating frame to form an insulating coil 3. Then, the inlet and outlet leads of the insulating coil are wound together with one end of a corresponding wire. The wound portion 33 is then passed through the corresponding notch 101 and bent. The portion of the wound portion passing through the notch 101 is coated with solder paste. Because the two wound portions need to be wound, perforated, and bent, and are not on the same working surface, achieving mechanical automation is complex. Generally, manual operation is used, resulting in low production efficiency for the inductor coil. Meanwhile, the core wire inside the conductor will be damaged to some extent during the stripping process, and the fatigue strength of the core wire end will decrease. In addition, the conductor 4 can move freely in the wire hole 102. When one end of the conductor moves during assembly and use, it will affect the winding part. Since it directly acts on the core wire, it will cause the core wire in the winding part to come off or break, thereby affecting the normal use of the inductor coil. Utility Model Content

[0003] The purpose of this invention is to provide an inductor coil for a needle selector, which solves the problems of low production efficiency, complex manufacturing process, easy breakage and wire breakage of existing needle selector inductor coils in the background art, and provides a more stable needle selector.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A needle selector inductor coil includes an insulating frame, an iron core fixed in the middle of the insulating frame, a spiral coil wound on the insulating frame, and two wires. A pair of terminals are inserted into the end of the insulating frame, and one end of the wires and one end of the spiral coil are wound around the corresponding terminals.

[0006] With the above technical solution, one end of the conductor and the outgoing or incoming lead of the spiral coil can be directly wound onto the corresponding terminal, making the assembly process simpler and facilitating automated operation.

[0007] The present invention is further configured such that: a pair of slots are formed at the end of the insulating frame, and the end of the wire connected to the terminal block is engaged in the slots.

[0008] Through the above technical solution, the slot can provide a fastening effect for the wire. Even if the end of the wire away from the terminal is disturbed, the interference with the end connected to the terminal can be reduced, thereby effectively preventing the wire from breaking or coming loose.

[0009] The present invention is further configured such that: the conductor includes a core wire and a rubber sheath covering the outside of the core wire, one end of the core wire is wound around the terminal block, and the rubber sheath is snapped into the slot;

[0010] The diameter of the slot is set to be interference-fitted with the outer diameter of the rubber.

[0011] Because the film has a certain deformation capacity, even if the slot is interference-fitted with the rubber, the rubber can still be inserted into the slot. There is a large frictional resistance between the rubber and the slot. At this time, even if the wire is pulled, the force is mainly borne by the rubber. Moreover, the film has a certain tensile strength, which can further reduce the interference to the connection between the wire and the terminal, thereby further protecting the wire and the connection between the wire and other components, and further reducing the occurrence of wire breakage and detachment.

[0012] The present invention is further configured such that: the outer side of the card slot is formed with a guide cone opening that is larger on the outside and smaller on the inside, and the width of the small end of the guide cone opening is smaller than the outer diameter of the rubber.

[0013] By setting a guide cone opening, the wire can be easily inserted into the slot, which facilitates the assembly of the wire and the entire coil, and also makes it easy to automate the process.

[0014] This invention is further configured such that: a pair of insertion holes are formed at the ends of the insulating frame, and the terminal blocks are inserted into the insertion holes. The terminal blocks are generally steel pins, which are inserted into the insertion holes of the insulating frame later using automated equipment.

[0015] The present invention is further configured such that: a pair of wire-passing grooves are formed on the insulating frame, and a clearance groove is formed on the bottom side of the wire-passing grooves.

[0016] The input and output leads of the spiral coil are inserted into the terminal blocks after passing through the corresponding wire slots. This allows for certain positional restrictions on the input and output leads of the spiral coil, making it convenient to wind their ends onto the terminal blocks.

[0017] This invention is further configured such that the two terminals are located on the same side of the insulating frame. Having the terminals on the same side facilitates the winding process of automated equipment, saving on manufacturing steps and improving efficiency.

[0018] This invention is further configured such that the junction of the terminal block with the wire and the spiral coil is wrapped with solder paste. Wrapping with solder paste improves the bonding strength between the terminal block, the wire, and the spiral coil, preventing them from detaching from each other.

[0019] The present invention is further configured such that: a positioning plane is formed on the insulating frame, the insulating frame can be positioned by the positioning plane, and thus the position of the terminal block can also be positioned, thereby facilitating the insertion of the terminal block by automated equipment and the winding of wires and spiral coils onto the terminal block.

[0020] A needle selector, comprising the needle selector inductor coil described in any one of the above, can effectively improve the product quality stability of the needle selector and extend its service life.

[0021] The outstanding effect of this utility model is:

[0022] Compared with existing technologies, by setting terminals on the insulating frame and setting the two terminals on the same side, the automated winding of the lead wires and conductors at the end of the spiral coil can be easily realized, which can improve the production efficiency and product quality stability of the inductor coil and reduce production costs.

[0023] By setting a slot with an external opening on the outside of the insulation frame, the wire clamping work can be facilitated. The tight connection between the wire sheath and the slot can reduce the disturbance of the other end caused by the movement of one end of the wire, thereby effectively avoiding the problems of wire breakage and detachment.

[0024] By setting a positioning plane, the insulating frame can be easily positioned, which further facilitates the insertion of terminals, spiral coils, and winding of wires on the frame. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the inductor coil structure of the needle selector of this utility model;

[0026] Figure 2 This is a schematic diagram of the other side of the inductor coil of the needle selector of this utility model;

[0027] Figure 3 This is a front view of the inductor coil of the needle selector of this utility model;

[0028] Figure 4 for Figure 3 A view about B;

[0029] Figure 5 for Figure 3 A magnified view of a specific area (A);

[0030] Figure 6 This is a schematic diagram of the insulating frame of this utility model;

[0031] Figure 7 This is a schematic diagram of the assembly of the insulating frame and the wire of this utility model;

[0032] Figure 8This is a schematic diagram of other sides of the insulating frame of this utility model;

[0033] Figure 9 This is a schematic diagram of the needle selector of this utility model;

[0034] Figure 10 A schematic diagram of the structure of an existing needle selector inductor coil;

[0035] Figure 11 for Figure 10 A magnified view of a portion of D;

[0036] Figure 12 for Figure 11 Sectional view of EE.

[0037] Reference numerals: 1. Insulating frame; 11. Slot; 12. Guide cone; 13. Insertion hole; 14. Wire groove; 15. Clearance groove; 16. Positioning plane;

[0038] 101. Notch; 102. Thread hole;

[0039] 2. Iron core;

[0040] 3. Helical coil; 31. Inlet lead end; 32. Outlet lead end;

[0041] 4. Conductor; 41. Core wire; 42. Sheath; 43. Damage caused by stripping;

[0042] 5. Terminals;

[0043] 6. Solder paste. Detailed Implementation

[0044] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0045] The following is for reference Figures 1 to 9 The present invention will be described as follows:

[0046] A needle selector inductor coil, such as Figure 1 As shown, it includes an insulating frame 1, an iron core 2 fixed in the middle of the insulating frame 1, a spiral coil 3 wound on the insulating frame 1, and two conductors 4. The conductors 4 include a core wire 41 and a rubber sheath 42 covering the outside of the core wire 41. Figure 6 As shown, the end of the insulating frame 1 is formed with a pair of slots 11, a pair of holes 13 and a pair of wire grooves 14. The holes 13 are fitted with terminals 5, and the wires 4 are snapped into the slots 11.

[0047] One wire 4 passes through the protruding end of the corresponding slot 11 and the inlet lead 31 of the spiral coil 3, and is wound around one of the terminals 5. The other wire 4 passes through the protruding end of the corresponding slot 11 and the outlet lead 32 of the spiral coil 3, and is wound around the other terminal 5. Figure 4 As shown, the junction of the terminal 5 with the wire 4 and the spiral coil 3 is wrapped with solder paste 6. A plastic sleeve can be added to the outside of the junction of the insulating frame with the terminal, wire, spiral coil, and solder paste. A plastic film can also be applied to the outside of the spiral coil. By winding both the wire and the spiral coil around the terminal, using the terminal as an intermediary, the connection between the two is facilitated and the connection performance is more stable. The wire is secured by a slot, and the friction between the wire and the slot reduces disturbance at the connection end between the wire and the terminal, preventing wire breakage and unstable connection.

[0048] like Figure 7 As shown, in this embodiment, the aperture of the slot 11 is interference-fitted with the outer diameter of the rubber sheet 42. Since the rubber sheet has a certain deformation capacity, even if the slot is interference-fitted with the rubber sheet, the rubber sheet can still be inserted into the slot. There is a large frictional resistance between the rubber sheet and the slot. At this time, even if the wire is pulled, the rubber sheet is mainly subjected to force. Moreover, the rubber sheet has a certain tensile strength, which can further reduce the interference to the connection between the wire and the terminal, thereby further protecting the wire and the connection between the wire and other components, and further reducing the occurrence of wire breakage and detachment.

[0049] The outer side of the slot 11 is formed with a guide cone 12 that is wider on the outside and narrower on the inside. The width of the smaller end of the guide cone 12 is smaller than the outer diameter of the rubber 42. The guide cone 12 facilitates the insertion of wires into the slot, making the assembly of wires and the entire coil easier and also facilitating automation. Because the smaller end of the guide cone 12 is smaller than the outer diameter of the rubber, it also prevents the wires from slipping out of the guide cone 12.

[0050] like Figure 8 As shown, a recessed groove 15 is formed on the bottom side of the threading groove 14 in this embodiment. Since one end of the inlet or outlet of the spiral coil is always inside, the recessed groove allows the wire entering the inside to have a passage to pass through, avoiding interference with other wire segments wound around the spiral.

[0051] like Figure 2 As shown, in this embodiment, the two terminals 5 are located on the same side of the insulating frame 1; the terminals are located at the same end, which facilitates the operation of automated equipment to wind the end wire of the spiral coil onto the terminals, and can reduce the difficulty and complexity of the process.

[0052] The insulating frame 1 has a positioning plane 16 formed on it. The positioning plane can be used to position the insulating frame, which can facilitate the insertion of the terminal into the socket by automated equipment. It can also facilitate the subsequent connection of wires, spiral coils and terminal, and facilitate the incorporation of solder into the end of the terminal.

[0053] like Figure 9 As shown, a needle selector includes the needle selector inductor coil described above.

[0054] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. A needle selector inductor coil, comprising an insulating frame (1), an iron core (2) fixed in the middle of the insulating frame (1), a spiral coil (3) wound on the insulating frame (1), and two wires (4), characterized in that: A pair of terminals (5) are inserted into the end of the insulating frame (1), and one end of the conductor (4) and one end of the spiral coil (3) are wound around the corresponding terminals (5).

2. The needle selector inductor coil according to claim 1, characterized in that: The end of the insulating frame (1) is formed with a pair of slots (11), and the end of the wire (4) connected to the terminal block is snapped into the slot (11).

3. The needle selector inductor coil according to claim 2, characterized in that: The conductor (4) includes a core wire (41) and a rubber sheath (42) covering the outside of the core wire (41). The aperture of the slot (11) is configured to be interference-fitted with the outer diameter of the rubber sheet (42).

4. The needle selector inductor coil according to claim 2, characterized in that: The outer side of the slot (11) is formed with a guide cone (12) that is larger on the outside and smaller on the inside, and the width of the small end of the guide cone (12) is smaller than the outer diameter of the rubber (42).

5. The needle selector inductor coil according to claim 2, characterized in that: The end of the insulating frame (1) is formed with a pair of sockets (13), and the terminal (5) is inserted into the sockets (13).

6. The needle selector inductor coil according to claim 2, characterized in that: A pair of wire grooves (14) are formed on the insulating frame (1), and a clearance groove (15) is formed on the bottom side of the wire grooves (14).

7. The needle selector inductor coil according to claim 1, characterized in that: The two terminals (5) are located on the same side of the insulating frame (1).

8. The needle selector inductor coil according to claim 1, characterized in that: The junction of the terminal (5) with the wire (4) and the spiral coil (3) is wrapped with solder paste (6).

9. The needle selector inductor coil according to claim 7, characterized in that: The insulating frame (1) has a positioning plane (16) formed on it.

10. A needle selector, characterized in that: Includes the needle selector inductor coil as described in any one of claims 1-9.

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