Needle selector inductance coil and needle selector

Abstract

The invention relates to the technical field of needle selectors, and discloses a needle selector inductance coil 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 wires. 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] The present invention relates to the technical field of needle selectors, and in particular to an inductor coil of a needle selector and a needle selector. Background Art

[0002] The prior art needle selector inductor coil is as shown in the attached manual. Figures 10 to 12 The present invention comprises an insulating frame 1, a spiral coil 3, and a conducting wire 4; the insulating frame 1 has two notches 101 and two threading holes 102 connecting the two notches 101 formed at the end. The existing production process of the inductor coil of the needle selector is as follows: first, the copper wire is wound onto the insulating frame to form the insulating coil 3, and then the inlet lead end and the outlet lead end of the insulating coil are respectively wound together with one end of a corresponding conducting wire, and then the winding part 33 is passed through the corresponding notch 101 and then bent, and the outer side of the part of the winding part passing through the notch 101 is wrapped with solder paste. Since the two winding parts need to be wound, perforated, and bent, and are not on the same working surface, it is relatively complicated to realize the mechanical automation process, and it is generally operated manually, resulting in a relatively low production efficiency of the inductor coil. At the same time, the inner core wire of the wire end will be more or less damaged during the wire stripping process, and the fatigue strength of the core wire end will be reduced; and the wire 4 can move freely in the threading hole 102. When one end of the wire moves during assembly and use, it will affect the winding part. Due to the direct effect on the core wire, the core wire of the winding part will be decoupled or broken, thereby affecting the normal use of the inductor coil. Summary of the invention

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

[0004] The above technical objectives of the present invention are achieved through the following technical solutions: A needle selector inductor coil comprises 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 at the end of the insulating frame, and one end of the wire and one end of the spiral coil are wound on the corresponding terminals.

[0005] Through the above technical solution, one end of the wire and the outgoing lead end or the incoming lead end of the spiral coil can be directly wound around the corresponding terminal, the assembly process will be simpler and automated operation will be convenient to achieve.

[0006] The present invention is further configured as follows: a pair of slots are formed at the end of the insulating frame, and one end of the wire connected to the terminal is clipped into the slot.

[0007] Through the above technical solution, the slot can provide a tightening effect on 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 occurrence of wire breakage and derailment.

[0008] The present invention is further configured as follows: the conductor comprises a core wire and a rubber covering the outer side of the core wire, one end of the core wire is wound around the terminal, and the rubber is clamped in the clamping slot; The aperture of the slot is interference-fitted with the outer diameter of the rubber.

[0009] Because the film has a certain deformation ability, even if the slot is interference fit with the rubber, the rubber can be inserted into the slot. There is a large friction resistance between the rubber and the slot. At this time, even if the wire is pulled, it is mainly the rubber that bears the force, and the film has a certain tensile strength, which can further reduce the interference with the junction of the wire and the terminal, thereby further protecting the wire and the connection between the wire and other parts, and further reducing the occurrence of wire breakage and derailment.

[0010] The present invention is further configured as follows: a guide cone opening which is larger outside and smaller inside and is connected to the slot is formed on the outside of the slot, and the width of the small end of the guide cone opening is smaller than the outer diameter of the rubber.

[0011] The guide cone opening can be provided to facilitate the insertion of the wire into the slot, thereby facilitating the assembly of the wire and the entire coil and facilitating automation.

[0012] The present invention is further configured as follows: a pair of jacks are formed at the end of the insulating frame, and the terminal is inserted into the jacks. The terminal is generally a steel pin, which is later inserted into the jack of the insulating frame by automated equipment.

[0013] The present invention is further configured as follows: a pair of wire threading grooves are formed on the insulating frame, and a recessed groove is formed on the bottom side of the wire threading groove.

[0014] The inlet lead end and the outlet lead end of the spiral coil are inserted into the terminal block after passing through the corresponding threading grooves, and the inlet and outlet lead ends of the spiral coil can be provided with certain position restrictions to facilitate winding the ends thereof on the terminal block.

[0015] The present invention is further configured such that the two terminals are located on the same side of the insulating frame. The terminals being located on the same side can facilitate the winding work of the automated equipment, save process and improve efficiency.

[0016] The present invention is further configured such that the junction of the terminal, the wire and the spiral coil is wrapped with solder paste, which can improve the bonding ability between the terminal, the wire and the spiral coil and prevent the three from being separated from each other.

[0017] The present invention is further configured as follows: a positioning plane is formed on the insulating frame, and the insulating frame can be positioned through the positioning plane, so that the position of the terminal is also positioned, thereby facilitating the insertion of the terminal by automated equipment and the winding of the wire and the spiral coil onto the terminal.

[0018] A needle selector, comprising any one of the needle selector inductor coils described above, can effectively improve the product quality stability of the needle selector and increase the service life of the needle selector.

[0019] The outstanding effects of the present invention are: Compared with the prior art, by arranging the binding posts on the insulating frame, and the two binding posts are arranged on the same side, the automatic winding of the lead wire and the conductor at the end of the spiral coil can be conveniently realized, the production efficiency of the inductor coil and the stability of product quality can be improved, and the production cost can also be reduced; By arranging a slot with an outer opening on the outer side of the insulating frame, the clamping work of the wire can be facilitated. By tightly connecting the wire rubber and the slot, the disturbance of the movement of one end of the wire to the other end can be reduced, thereby effectively avoiding the problem of wire breakage and derailment. By setting the positioning plane, the insulating frame can be easily positioned, which can further facilitate the insertion of terminal posts, spiral coils, and winding of wires on the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the inductor coil of the needle selector of the present invention; Figure 2 It is a schematic diagram of the other side of the inductor coil of the needle selector of the present invention; Figure 3 It is a front view of the inductor coil of the needle selector of the present invention; Figure 4 for Figure 3 The view toward B; Figure 5 for Figure 3 A partial enlarged view of A; Figure 6 It is a schematic structural diagram of the insulating skeleton of the present invention; Figure 7 It is a schematic diagram of the assembly of the insulating framework and the conductor of the present invention; Figure 8 It is another side schematic diagram of the insulating framework of the present invention; Fig. 9 It is a structural schematic diagram of the needle selector of the present invention; Fig.10 It is a structural schematic diagram of an existing needle selector inductor coil; Fig.11 for Fig.10 A partial enlarged view of D; Fig.12 for Fig.11 About the cross-sectional view of EE.

[0021] Reference numerals: 1, insulating frame; 11, card slot; 12, guide cone; 13, plug hole; 14, threading groove; 15, recessed groove; 16, positioning plane; 101, notch; 102, threading hole; 2. Iron core; 3. spiral coil; 31. inlet lead terminal; 32. outlet lead terminal; 4. Conductor; 41. Core wire; 42. Rubber; 43. Damage caused by wire stripping; 5. Terminals; 6. Solder paste. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] The following references Figures 1 to 9 The present invention is described: 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 wires 4, wherein the wires 4 include a core wire 41 and a rubber 42 covering the outer side 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 jacks 13 and a pair of wire threading slots 14 , the jacks 13 are provided with terminal posts 5 , and the wires 4 are clamped in the slots 11 .

[0024] One of the wires 4 passes through the protruding end of the corresponding slot 11 and the inlet lead end 31 of the spiral coil 3 and is wound around one of the terminals 5, and the other wire 4 passes through the protruding end of the corresponding slot 11 and the outlet lead end 32 of the spiral coil 3 and is wound around the other terminal 5. Figure 4 As shown, the junction of the terminal 5, the wire 4, and the spiral coil 3 is wrapped with solder paste 6, and a plastic cover can be added to the outside of the junction of the insulating frame and the terminal, the wire, the spiral coil, and the solder paste, and a layer of plastic film can also be provided on the outside of the spiral coil. By winding the wire and the spiral coil on the terminal, the terminal is used as an intermediate, which can facilitate the connection between the two, and the connection performance is more stable; the wire is clamped by the slot, and the friction between the wire and the slot can reduce the disturbance of the connection end of the wire and the terminal, which can prevent the wire from breaking and unstable connection.

[0025] like Figure 7As shown, the aperture of the card slot 11 of this embodiment is set to be interference fit with the outer diameter of the rubber 42. Since the rubber has a certain deformation ability, the rubber can be inserted into the card slot even if the card slot is interference fit with the rubber. There is a large friction resistance between the rubber and the card slot. At this time, even if the wire is pulled, it is mainly the rubber that bears the force, and the film has a certain tensile strength, which can further reduce the interference with the connection between the wire and the terminal, thereby further protecting the wire and the connection between the wire and other parts, and further reducing the occurrence of wire breakage and disconnection.

[0026] The outer side of the slot 11 is formed with a guide cone 12 which is arranged to be connected thereto and is arranged to be larger outside and smaller inside. The width of the small end of the guide cone 12 is smaller than the outer diameter of the rubber 42. By setting the guide cone, the wire can be conveniently inserted into the slot, which is convenient for assembling the wire and the entire coil, and can also be convenient for automation. Since the small end of the guide cone is smaller than the outer diameter of the rubber, the wire can be prevented from slipping out of the guide cone.

[0027] like Figure 8 As shown, a recess 15 is formed on the bottom side of the threading groove 14 of this embodiment. Since one end of the incoming wire lead or the outgoing wire lead of the spiral coil is always on the inner side, the recess can provide a channel for the wire entering the inner side to pass through, thereby avoiding interference with other wire segments of the spiral winding.

[0028] like Figure 2 As shown, the two terminals 5 of this embodiment are located on the same side of the insulating frame 1; the terminals are located at the same end, which can facilitate the work of the automated equipment to wind the end wire of the spiral coil on the terminals, and can reduce the difficulty and complexity of the process; The insulating frame 1 is formed with a positioning plane 16, which can be used to position the insulating frame, facilitate the automated equipment to insert the terminal into the jack, facilitate the subsequent connection of the wire, spiral coil and terminal, and facilitate the integration of tin into the end of the terminal.

[0029] like Fig. 9 As shown, a needle selector includes the needle selector inductor coil described above.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the scope of protection of the present invention.

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 conducting wires (4), characterized in that: A pair of terminals (5) are inserted at the end of the insulating frame (1), and one end of the wire (4) and one end of the spiral coil (3) are wound around the corresponding terminals (5).

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

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

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

5. The needle selector inductor according to claim 2, characterized in that: A pair of insertion holes (13) are formed at the ends of the insulating frame (1), and the terminal posts (5) are inserted into the insertion holes (13).

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

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

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

9. The needle selector inductor according to claim 7, characterized in that: A positioning plane (16) is formed on the insulating frame (1).

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

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