JPH0568057U - Fuse socket - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the operation of plugging and unplugging the power fuse in small electronic devices such as laptop computers. [Structure] A thermosetting synthetic resin molded body having a fitting portion into which a self-standing fuse is inserted. Protrusions for holding the fuse are formed at the positions where the inner side walls of the fitting portion face each other. Similarly, a fuse contact piece is provided at the bottom of the fitting part. Further, the side wall of the fitting portion on the side intersecting with the facing position is partially cut away.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a socket for mounting a power fuse in a small electronic device called a laptop type or a notebook type.

[0002]

[Prior Art]

 In portable electronic devices such as notebook computers, various restrictions are imposed on the device configuration in order to reduce their size and weight. One of them is the power fuse installation structure. That is, in this type of electronic device, a flow solder type self-standing fuse is used in consideration of a relatively large rush current due to the characteristics of the current circuit.

By the way, in the case of a surface mount fuse, it is possible to remove and mount the fuse on the substrate relatively easily when the fuse is replaced, but in this case, the temperature control of the re-installed fuse is necessary. Since it is extremely difficult, as the power supply fuse of this type of equipment, the self-standing fuse of pin insertion integral claw type enclosed in a box type case with a height of 10 mm and a width of about 6 mm is used.

[0004]

[Problems to be solved by the device]

 However, since the self-standing fuse is used by directly inserting the lead contact piece protruding from the lower part of the case body into the assembly board of the device and brazing it, it is necessary to replace it when the fuse is broken. The board had to be detached from the main body of the equipment, the solder had to be melted with a trowel inserted from the back side of the board, and the lead had to be pulled out while holding the fuse body. Therefore, replacement work was not easy.

Therefore, the present invention aims to develop a device that allows the self-standing fuse to be freely inserted and removed and replaced without removing the mounting substrate.

[0006]

[Means for Solving the Problems]

 According to the configuration of the present invention, the object is a thermosetting synthetic resin molded body having a fitting portion for inserting the self-standing fuse, and the fuse is held at a position opposite to the inner wall of the fitting portion. Each fuse projection is formed, and the fuse contact contact piece is also provided at the bottom position of the fitting portion, while using the fuse socket formed by partially removing the side wall of the fitting portion intersecting with the facing position. Can be solved.

[0007]

[Action]

 The socket body made of a thermosetting synthetic resin molded body can form an electrically insulating fitting case having some material elasticity. Therefore, the protrusions formed at the positions opposite to the inner wall of the fitting portion function to hold the outside of the fuse case inserted in the fitting portion by the clamping force based on the elastic force of the material. To do.

At the same time, in the self-standing fuse inserted in the fitting portion, its lead contact piece is inserted into the fuse contact contact piece provided at the bottom position of the fitting portion, and the electrical connection between them is measured. At the same time, the fuse contact piece functions as a mechanical and electrical attachment foot to the mounting board to be processed by an automatic pushing machine or the like.

Further, by cutting off a part of the side wall of the fitting portion of the socket, the holding pressure in the fuse holding projection can be made stronger by applying the elastic force of the structure to the elastic force of the material. In addition, the square shape of the outer periphery of the fitting part by this cutting also functions as a notch for gripping by the chuck of the automatic pushing machine.

[0010]

【Example】

Hereinafter, embodiments of the illustrated socket of the present invention will be described in detail. The socket body 1 is made of a synthetic resin molded body such as thermosetting polyester or polyphenol. The socket body 1 has a fitting portion 3 surrounded by a standing wall 2 on a thick bottom plate portion. Protrusions 4 and 4 are formed as stoppers for holding at a position facing the inner side surface of the fitting part 3, and are made of an elastic metal such as phosphor bronze on a straight line connecting the facing positions of the bottom plate part. A pair of pin-type contact contact pieces 5, 5 configured in a hollow cylindrical state are arranged. Further, the standing wall on the side orthogonal to the facing position of the fitting portion 3 is partially cut to form a cut 6.

The pin-type contact pieces 5, 5 function as a lead contact piece for the self-standing fuse 7 and a mounting pin for the device, and the projections 4, 4 are self-standing for press-fitting and fitting into the fitting part 3. It acts so as to hold the outside of the fuse case, and the notch 6 functions as the notch in the chuck of the automatic pushing machine, and the material elasticity is used for the standing walls 2 and 2 by cutting off part of it. It acts so as to function as an elastic piece.

Therefore, when mounting to the device, the chucks of the automatic pushing machine are used to pinch the notches 6 and 6 side of the socket body 1 and the contact pieces 5 and 5 thereof are fitted into the mounting holes of the mounting board of the device. This is done by pushing in for subsequent brazing. As a result, the socket body 1 is electrically and mechanically connected and fixed to the substrate.

In this assembled state, the fuse is mounted by connecting the fuse 7 to the fitting portion 3 of the socket body 1 and the leads 8 and 8 from above to the contact contact pieces 5 and 5 as shown by the upper chain line in FIG. It is made by pressing and inserting into the hollow part.

As a result, the contact pieces 5, 5 are electrically connected to the leads 8, 8 and the outside of the case of the fuse 7 is sandwiched between the inside protrusions 4, 4 of the fitting portion 3 to cause mechanical contact. Fixed. Moreover, since the fuse is mounted elastically by the material elasticity and structural elasticity of the standing walls 2 and 2 of the sandwiched fitting portion 3, the fuse 7 withstands the vibration of the substrate and the impact from the outside. Can be kept stable.

When the fuse is broken, the fuse 7 can be removed by pulling it with the fingertip while pulling the fuse 7 with the board still attached with the device cover or the like removed. Can be installed.

[0016]

[Effect of the device]

 As described above, by mounting the power supply fuse in the small electronic device such as the conventional notebook personal computer using the fuse socket of the present invention, it is necessary to directly braze the self-standing fuse to the substrate. Since fuses can be easily replaced on the board when the fuse is blown, the socket body can be assembled to the board during production by using the chuck to grasp the cut and the automatic pusher processing. Therefore, the workability at the time of production is good, and since the incision structure makes the elasticity of the fuse more effective, it is excellent for ensuring the safety of the installed fuse. It is extremely effective as a means for facilitating the installation and removal of fuses.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the socket of the present invention.

FIG. 2 is a side view showing an embodiment of the socket of the present invention together with a mounting fuse.

[Explanation of symbols] 1 Socket body 2 Standing wall 3 Fitting part 4 Protrusion 5 Contact contact piece 6 Notch 7 Fuse 8 Lead

Claims (1)

[Scope of utility model registration request] 1. A thermosetting synthetic resin molded body having a fitting portion into which a self-standing fuse is inserted, each fuse holding projection being formed at a position facing an inner wall of the fitting portion,
A fuse socket characterized in that a fuse contact piece is also provided at a bottom position of the fitting portion, and a side wall of the fitting portion on a side intersecting with the facing position is partially removed.