JPH0528008U - Core holder- - Google Patents

Abstract

(57) [Summary] [Purpose] It has a simple structure that does not damage the protruding piece inside the core case when the core is stored.
It is to provide a core holder that is cheaper and easier to use than ever before. [Structure] The rod-shaped projecting pieces 1 are provided on both longitudinal end faces of the core 12.
3 is provided, and the tip of the protruding piece 13 is spherical. Hijiji 2
Core cases 14, 14 integrally and openably connected by
′ Is provided with a semicircular window 7, and also has a square concave groove 15 fitted to the protruding piece 13 of the core 12 on the inner side of both longitudinal end walls, and the concave groove 15 is a protrusion. It is a square whose side length is slightly larger than the diameter of the piece 13, and the depth is almost the same as the length of the protruding piece 13. On the inner surfaces of the bottoms of the core cases 14 and 14 ', a spherical crown-shaped projection 16 is provided in the central portion, and the projections 16 are located on both sides of the projection 16 and are parallel to the longitudinal direction of the core cases 14 and 14'. A linear slit 17 (one is omitted and shown) is inserted to form a spring piece.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a core holder used in a noise filter that prevents induced noise.

[0002]

[Prior Art]

 A conventional core holder will be described in detail with reference to FIG. 5. The half-divided cylindrical core 5 has a groove 6 having a semicircular cross section extending in the longitudinal direction. By fitting them together, a circular cylindrical space is defined inside. The signal line is inserted and sandwiched in the circular cylindrical space defined by the pair of half-divided cylindrical cores 5, and the pair of half-divided cylindrical cores is inserted into the core holder consisting of two core cases 1, 1 '. A noise filter is constructed by accommodating and crimping 5. A core holder for accommodating a pair of half-divided tubular cores 5 is configured to include core cases 1, 1'which are integrally and openably connected to each other at the hinge portion 2. A pair of engaging portions 4 arranged at intervals in the longitudinal direction are provided on the engaging side portion of the core case 1, and the engaging portion 4 is engaged with the engaging side portion of the core case 1 '. A pair of locking claws 3 are provided, and each locking claw 3 projects vertically from the engaging side portion. Semi-circular windows corresponding to the grooves 6 of the half-divided tubular core 5 are provided on both longitudinal end walls of the core cases 1, 1 '. Further, the projecting pieces 8 are provided on the inner side walls of both ends of the core cases 1, 1 ′ in the longitudinal direction, and the grooves 9 are formed on both sides of the projecting piece 8. The groove 9 has a degree of freedom in the longitudinal direction of the projecting piece 8. It has an increasing effect and fits into the groove 10 provided in the pair of half-split cores 5. Finger pieces 11 are provided on the inner surfaces of the bottoms of the core cases 1, 1 '. With the above configuration, the pair of half-divided tubular cores 5 are housed in the core cases 1, 1 ', and subsequently, the signal lines are sandwiched in the grooves 6 of the pair of half-divided tubular cores 5, and then the engaging portions 4 are engaged. The noise filter can be attached to the signal line by engaging the pawl 3.

[0003]

In the case of the conventional core holder, when the core 5 is stored in the core cases 1, 1 ′, the core cases 1, 1 ′ are inserted into the grooves 10 provided in the core 5. The protruding piece 8 provided is engaged. By increasing the degree of freedom of the projecting piece 8 with the groove 9, the accuracy of the length (axial direction) dimension of the core 5 is relaxed. However, since the strength of the projecting piece 8 is not large, the projecting piece 8 may be broken, the core holder becomes defective, and there is a problem that the core 5 is wasted and a troublesome work is required. Moreover, the conventional holders are expensive because the structures of the finger pieces 11 and the protruding pieces 8 are complicated. An object of the present invention is to provide a core holder that is inexpensive, has a simple structure, and is easy to use.

[0004]

[Means for Solving the Problems]

 According to the present invention, in the core holder having a pair of holders that can be opened / closed for accommodating a pair of split cores for sandwiching the signal line along the longitudinal direction, the core holder has a pair of longitudinal ends of the split cores. A core holder is obtained which is characterized in that grooves for engaging with projecting pieces provided in the portions are provided inside the walls of both ends of the pair of holders in the longitudinal direction. Further, there is obtained a core holder characterized in that protrusions are provided on the inner surfaces of the bottoms of the pair of holders and the slits are provided on both sides of the protrusions.

[0005]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. 1, 2, 3, and 4. As shown in FIG. 1, rod-shaped projecting pieces 13 are provided on both end surfaces of the core 12 in the longitudinal direction, and the tips of the projecting pieces 13 are spherical. A pair of engaging portions 4 arranged at intervals in the longitudinal direction are provided on the engaging side portion of the core case 14, and the engaging portion 4 is engaged with the engaging side portion of the core case 14 '. A pair of locking claws 3 are provided, and each locking claw 3 projects vertically from the engaging side portion. The core cases 14 and 14 ', which are integrally and openably connected to each other at the hinge portion 2, are provided with a semicircular window 7, and are fitted to the projecting pieces 13 of the core 12 on the inner sides of both longitudinal end walls. Has a square concave groove 15. The groove 15 is a square having a side length slightly larger than the diameter of the protruding piece 13, and the depth thereof is substantially the same as the length of the protruding piece 13. On the inner surface of the bottom of the core cases 14, 14 ', a spherical crown-shaped projection 16 is provided in the center, and the projections 16 are located on both sides of the projection 16 and are parallel to the longitudinal direction of the core cases 14, 14'. A single linear slit 17 (one is omitted and shown) is inserted to form a spring piece.

To store the core 12 in the core cases 14 and 14 ′, the core 12 is inserted halfway in the thickness direction of the core cases 14 and 14 ′, and the protruding piece 13 is attached to the bottom of the semicircular window 7. After mounting, the core 12 is strongly pushed toward the bottoms of the core cases 14 and 14 ', and the projecting piece 13 is fitted into the groove 15 to carry out. When the back surface of the core 12 (the surface directly opposite to the central groove 6) presses the projection 16, the protruding piece 13 is displaced from the inner wall surfaces of the core casings 14 and 14 'in the longitudinal direction toward the bottom to fit into the groove 15. To do.

Further, when the core 12 is free, when the protruding piece 13 and the groove 15 are fitted, a slight gap is generated in the peripheral wall of the groove 15, so that the restoring force of the protrusion 16 causes the core 12 to move to the core case 14, Push back to the opening side of 14 '. The core 12 stops at a position where the protruding piece 13 fits into the groove 15 or at a position where the core 12 is housed and pressed onto the inner surfaces of the core cases 14 and 14 'when the restoration of the protrusion 16 is completed. The core cases 14 and 14 'are of a size capable of accommodating the core 12 with a slight margin, and the height of the protrusion 16 is set to be slightly larger than this margin, so that the surface of the core piece 12 has the core case 14, It is in a state of slightly protruding from the opening surface of 14 '.

FIG. 2 is a vertical sectional front view showing a state where the core 12 is housed in the pair of core cases 14, 14 '. As shown in FIG. 2, the protruding piece 13 is fitted in the peripheral wall of the groove 15, and the back surface of the core 12 pushes the spring piece outward from the bottom surface of the core cases 14 and 14 '. Therefore, the pair of cores 12 are firmly crimped by the restoring force of the spring pieces.

3 and 4 are a vertical sectional front view and a vertical sectional side view showing the usage state of the holder of FIG. 1 with the signal lines omitted. As is apparent from FIGS. 3 and 4, when the protruding piece 13 and the groove 15 are fitted, a slight gap is generated in the peripheral wall of the groove 15, so that the pair of cores 12 are not wasted by the restoring force of the spring piece. It is shown to be a core holder that can be pressed and crimped.

[0010]

[Effect of the device]

 According to the present invention, the core holder has a simple structure that does not damage the protruding piece in the core case when the core is stored. Can be provided.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a core holder of the present invention.

FIG. 2 is a vertical cross-sectional front view of a state where a core piece is stored in the core holder of FIG.

FIG. 3 is a vertical cross-sectional front view showing a usage state of the core holder of FIG.

FIG. 4 is a vertical cross-sectional side view showing a usage state of the core holder of FIG.

FIG. 5 is a perspective view showing an embodiment of a conventional core holder.

[Explanation of symbols]

 1,1 ', 14,14' Core case 2 Hinge part 3 Locking claw 4 Engaging part 5,12 Core 6,9,10,15 Groove 8 Projection piece 11 Finger piece 13 Projection piece 16 Protrusion 17 Slit

Claims (2)

[Scope of utility model registration request] 1. A core holder having a pair of holders that can be opened / closed for accommodating a pair of split cores for sandwiching a signal line along a longitudinal direction, and a core holder having a cover. A core holder characterized in that a groove for engaging with a projecting piece provided is provided on the inside of both longitudinal end walls of the pair of holders-covers. 2. The core holder according to claim 1, wherein a protrusion is provided on the inner surface of the bottom portion of the pair of holders, and slits are provided on both sides of the protrusion.