JPH0525196B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an efficient temporary fixing method for relatively heavy and bulky electronic components when they are assembled onto a wiring board by soldering.

[Conventional technology]

Conventionally, in order to solder an electronic component that is relatively heavy and bulky and lacks self-supporting stability, such as a stand-up type connector, to a wiring board, the terminal is inserted into the connector's terminal fitting hole provided on the board surface, and the terminal is connected to the terminal. The temporary fixation was maintained by the force of frictional engagement with the fitting hole, and then soldering was performed.

[Problem that the invention seeks to solve]

However, for example, in an upright connector having a structure in which a plurality of connector terminals are arranged in a straight line, when the plurality of connector terminals are fitted into a group of insertion fitting holes formed in the base body, the linear direction Even if positioning is possible, vertical positioning becomes unstable, making it difficult to stand up and lock the connector on the base body when soldering the connector terminals to the base body.

Therefore, a method of separately arranging a temporary fixing member for the connector may be considered, but this is not preferable because it increases the number of parts.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a wiring board having temporary locking means that allows a connector to be stood up on the board via the connector terminal and soldered thereto without increasing the number of parts.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention provides: a base body; a mounting base including a group of insertion and fitting holes linearly arranged in the base body; a stand-up type connector including connector terminals arranged in a straight line, a heat dissipation fin connected to the base body adjacent to the mounting base, and a heat generating member fixed within the heat dissipation fin. and the heat dissipation fin is made of a heat dissipation member that stands up with respect to the base body and is provided substantially perpendicular to the linear arrangement of the connector terminals, and the member is located above the end of the upright connector. The height of the protrusion from the base body is such that the terminal of the upright type connector is engaged with the upper surface of the connector end into which the terminal of the upright connector is inserted into the hole of the insertion fitting hole group. It has a wiring base configuration that is characterized by being arranged like a sashimi.

[Action and effect of the invention]

Since the connector terminals are arranged linearly on the connector, the locking force against external force in the linear direction is maintained, while the locking force in the vertical direction to the linear direction is maintained by the projections formed on the heat dissipation fins. Since the fins are formed to lock onto the upper surface of the connector end, the heat generating member is assisted by fixing the heat dissipating fins to the base and pressing them from the upper surface of the connector.

Moreover, the surface area of the heat dissipation fins increases due to the protrusions, making it possible to further improve the heat dissipation effect.In particular, there is no need to provide a new fixing means to the base for temporarily fixing the connector, which increases the number of parts. can be prevented.

Further, by employing a structure in which the end portion of the connector is provided with, for example, one extra terminal attachment hole, it is possible to securely temporarily secure the end portion of the connector using the protruding portion of the heat dissipation fin.

〔Example〕

The base body of the present invention will be described below with reference to embodiments shown in the accompanying drawings.

FIG. 1 shows a base body (base) made by means of the present invention.
FIG. 2 is a perspective view illustrating the arrangement of each assembly part for assembling the stand-up type connector, in which 1 is the wiring board, 2 is the stand-up type connector, 3 is the connector terminal, and 4 is the stand-up type connector.
is a connection cord to the connector 2, 5 is a mounting base for the connector terminal 3, 5a is a hole group for insertion and fitting of the connector terminal 3, and 6 is a connector for dissipating heat generated from electronic components (heat generating members) accumulated on the board 1 into the air. Heat dissipation fins (heat sink) for dissipating heat, 6a is a protrusion provided on the heat sink 6, 6b is a screw hole for fixing the heat sink 6 to the base 1, 7 is a mounting base for the heat sink 6, 7a is a screw hole Figure 2 is a side view, including a partially broken surface, of the assembled parts shown in Figure 1 having been assembled in their predetermined positions, and 8 is an assembly screw; The other symbols are the same as in FIG.

3 to 5 are views of second to fourth embodiments in which the shape of the protrusion of the heat sink 6 as a base component in the embodiment shown in FIGS. 1 and 2 is respectively modified. Yes, 6d, 6e
and 6f are protrusions, respectively.

FIG. 6 is a side view illustrating a fifth embodiment of the present invention, in which 6 is a heat sink, 6g is a projection thereof, 9 is an electronic component, and 10 and 11 are wiring terminals for the electronic component 9.

Next, to specifically explain the wiring board according to the present invention, in the first embodiment shown in FIGS. The terminal 3 is inserted into the insertion fitting hole 5a, and the temporary assembly is completed using the contact pressure between the terminal 3 and the inner peripheral surface of the fitting hole 5a. However, under this condition, as described above, the engagement force of the connector 2 with the base 1 is insufficient, so there is a high possibility that the connector 2 will tilt or fall off before the soldering work of the terminals 3 is completed.

Therefore, in the means of the present invention, a protrusion 6a as shown in FIG. 6 to the position of the heat sink mounting base 7 of the board 1 using the assembly screws 8,
The bottom surface of the protrusion 6a is configured to press against the top surface of the connector 2. and heat sink 6
The mounting screw holes 6b are provided in the portion 6c that acts as a leaf spring, which is formed by folding the extended portion of the bottom of the heat sink 6 upward into a U-shape. It is possible to eliminate the possibility that excessive compressive force will be applied to the connector 2 and destroy it when the connector 2 is screwed into the connector 2. The connector 2, which has been firmly and temporarily fixed to the base 1 in this way, connects the next connector terminal 3 to the base 1.
Before completing the main assembly by soldering to the back side of the board, the cord 4 connected to the connector 2 may come into contact with an object, or the connector may be removed while the board 1 is turned over for soldering work. It is possible to completely avoid the inconvenience of the connector 2 tilting and shifting from the correct holding position or falling off due to its own weight. Moreover, the protrusion 6a also functions as a heat escape route for efficiently dissipating the heat generated by the electrical resistance within the connector 2 towards the heat sink 6. Therefore, the heat sink 6 used in the present invention While the conventional heat sink only served as a heat dissipation plate to prevent the temperature of the board 1 from rising, the connector 2
With the addition of the functions of reinforcing the engagement force for temporary assembly and promoting the dissipation of heat generated from the connector 2, the heat sink has three times the capacity of a conventional heat sink. Moreover, the protrusion 6a is the heat sink 6.
It also functions as a rotation stopper for the heat sink 6 when it is screwed.

In the second embodiment shown in FIG. 3, a downward protrusion is provided at the tip of the protrusion 6a of the heat sink 6 of the first embodiment shown in FIG. By fitting into an unused mounting hole in the group of mounting holes 2a, the temporary assembly strength of the connector 2 can be improved. 6d is a protrusion.

The third embodiment diagram in FIG. 4 shows an example in which the protruding portion of the protruding portion 6e of the heat sink 6 of the second embodiment is made to protrude longer to further improve the reliability of temporary assembly. ing. 6e is a protrusion.

The fourth embodiment shown in FIG. 5 shows that the bottom surface of the tip of the protrusion 6a of the heat sink 6 of the first embodiment is arranged so as to straddle the top surface of the connector 2, with an interval equal to the width of the top surface. This figure shows a case in which a stable pressure and temporary fixing effect of the connector 2 is ensured by providing a pair of protruding portions. 6f is a protrusion.

FIG. 6 is a fifth embodiment diagram showing a case where an electronic component 9 for circuit configuration such as a chemical capacitor or a transformer is selected as the member to be temporarily fixed, and 10 and 11 are soldering of the electronic component. The wiring terminal 6g is a pressing protrusion of the electronic component 9 formed integrally with the heat sink 6.

In the above embodiment, the heat sink 6 for heat dissipation of the board was used as a component of the board main body 1 for temporarily fixing the electronic components, but there are other ways to apply the heat sink 6 to the surface of the electronic components fixed to the board 1 with screws. If there is a protruding portion, this protruding portion can be utilized for temporarily fixing the connector 2 or other electronic components by a method similar to that described above. Furthermore, if necessary, attach a plate spring or the like as a third member for pressing and fixing the electronic components to which the screws for fixing base components or electronic components to be temporarily attached are attached using the screw fixing method. It can also be useful for.

[Brief explanation of the drawing]

FIG. 1 is an inclined view showing the arrangement of each assembly part for assembling a stand-up type connector to a wiring board by means of the present invention, and FIG. 2 shows each assembly part shown in FIG. 1 in a predetermined position. FIGS. 3 to 6 are views of second to fifth embodiments depicting alternative embodiments of the embodiment shown in FIG. 2, respectively; It is. In the figure: 1... Base body, 2... Connector, 3... Connector terminal, 5a... Hole for insertion and fitting of terminal, 6... Heat sink, 6a... Projection, 8... Screw.

Claims (1)

[Scope of Claims] 1. A base body, a mounting base having a group of insertion and fitting holes linearly arranged in the base body, and a mounting base that stands up in a straight line to fit into the linear group of insertion and fitting holes. a stand-up type connector including connector terminals disposed in a vertical direction; a heat dissipation fin connected to the base body adjacent to the mounting base; and a heat generating member fixed within the heat dissipation fin; The heat dissipation fin is made of a heat dissipation member that stands up against the base body and is provided substantially perpendicular to the linear arrangement of the connector terminals, and the member is locked above the end of the upright connector. It has a protrusion, and the protrusion is arranged at a height from the base body such that the terminal of the stand-up type connector is engaged with the upper surface of the connector end that is inserted into the hole of the insertion and fitting hole group. A wiring board characterized by: