JP3410982B2 - Positioning mechanism for insert molded terminals - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a case where a terminal which is insert-molded by a molding member is used as a terminal of an electronic component mounted on, for example, an automobile,
The present invention relates to a molded terminal positioning mechanism capable of accurately setting the positioning of the terminal and effectively protecting the exposed surface, which is the contact surface of the upper surface of the terminal, from the external environment.

[0002]

2. Description of the Related Art Conventionally, as a terminal of an electronic component of an electronic component which is a component of various electronic devices, terminals having various structures have been widely used according to its application mode. Among these terminals, for example, terminals that are insert-molded by a synthetic resin molding member are known. The terminal that is insert-molded by the synthetic resin molding member as described above is accurately molded at a predetermined position by using the positioning mechanism.

FIG. 4 is a cross-sectional view showing a schematic configuration for explaining a conventional positioning mechanism for insert-molded terminals, and FIG. 5 is a sectional view of a terminal machined by using the positioning mechanism shown in FIG. It is sectional drawing which shows schematic structure. 4 and 5, 1 is a terminal, 1a is a positioning hole provided in the terminal 1, 1b is an exposed surface which is a contact surface of the upper surface of the terminal 1, 2 is a lower mold (one mold), 2a Is a positioning pin projecting from the lower mold 2.

Reference numeral 3 denotes an upper mold (the other mold) arranged at a position opposed to the lower mold 2 with the terminal 1 interposed therebetween, and 4 is press-fitted between the lower mold 2 and the upper mold 3. A synthetic resin molding member for producing the insert-molded terminal 1. This synthetic resin molded member 4 is molded on the pole plate of the terminal 1 after molding as shown in FIG.

The operation of the conventional insert-molded terminal positioning mechanism shown in FIG. 4 will now be described. As shown in FIG. 4, first, by fitting the positioning hole 1 a provided in the terminal 1 into the positioning pin 2 a protrudingly provided on the lower mold 2, the terminal 1 is fixed to the predetermined mold of the lower mold 2. Will be set to the position.

Next, as shown in FIG. 4, the upper mold 3 is arranged at a position opposed to the lower mold 2 with the terminal 1 interposed therebetween.
By press-fitting the synthetic resin molding member 4 between the lower mold 2 and the upper mold 3, the terminal 1 insert-molded by the synthetic resin molding member 4 can be produced. FIG. 5 is a sectional view showing a schematic configuration of a resin molded product in which the lower mold 2 and the upper mold 3 shown in FIG. 4 are removed, that is, the terminal 1 molded by the synthetic resin molding member 4. Has been done.

[0007]

As described above, in the terminal 1 produced by using the conventional positioning mechanism of the insert-molded terminal shown in FIG. 4, the upper surface of the terminal 1 as shown in FIG. Is the exposed surface 1b such as a contact surface, the positioning hole 1a provided in the terminal 1 in advance remains as a through hole, and as a result, the exposed surface of the upper surface of the terminal 1 is exposed through the through hole of the positioning hole 1a. 1b is in a state of distribution with the outside.

Therefore, there is a risk that dust or water will enter from the outside through the through hole of the positioning hole 1a provided in the terminal 1 in the direction shown by the arrow B in FIG.
There is a problem in that the exposed surface 1b, which is the contact surface on the upper surface of the terminal 1, causes inconveniences such as adverse effects such as corrosion due to contamination and poor contact. On the other hand, as a solution to the above-mentioned inconvenience, it has been practiced to cover the positioning hole 1a, which is a through hole, with an intrusion prevention cover, a film, or the like, but the structure becomes complicated and the cost increases. There were problems such as.

The present invention has been made in order to solve the above problems, and a notch is provided around a positioning hole provided in a terminal, and a synthesis is performed from a lower die which flows through the notch. Forming a pressing convex portion on the upper mold side by a resin molding member, and the pressing convex portion closes the positioning hole of the terminal and has a function of suppressing the exposed surface of the upper surface of the terminal, As a result, the positioning of the terminals can be set accurately, and the insert-molded processing that prevents dust and water from entering from the outside through the positioning holes of the terminals due to the molded convex protrusions. An object is to provide a terminal positioning mechanism.

[0010]

As a positioning mechanism for insert-molded terminals according to claim 1 of the present invention,
With a notch portion provided around the positioning hole of the terminal that fits into the positioning pin protruding from one die, and a molding member from the one die that flows through the notch portion,
In order to mold the holding convex portion on the other mold side disposed at the position opposite to each other with the terminal sandwiched, a molding hole having the same shape as the holding convex portion provided on the other mold, It is characterized by having.

According to a second aspect of the present invention, there is provided an insert-molded terminal positioning mechanism according to the first aspect of the present invention.
The cutout portion is configured to communicate with the positioning hole of the terminal.

According to a third aspect of the present invention, there is provided an insert molding terminal positioning mechanism according to the first aspect of the present invention.
The length dimension of the positioning pin is set so that when the positioning pin of the terminal is fitted into the positioning pin, the length of the positioning pin is not more than the exposed surface of the upper surface of the terminal.

According to a fourth aspect of the present invention, there is provided an insert-molded terminal positioning mechanism according to the first aspect of the present invention.
The holding projection formed on the other mold side closes the positioning hole of the terminal and has a function of holding down the exposed surface of the upper surface of the terminal.

According to a fifth aspect of the present invention, there is provided an insert-molded terminal positioning mechanism according to the first aspect of the present invention.
The above-mentioned molded parts are made of synthetic resin.
It is characterized in that it is composed of engineering members .

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION In a positioning mechanism for insert-molded terminals according to the present invention, a notch portion is provided around a positioning hole provided in the terminal, and a synthesis is performed from a lower die which flows through the notch portion. The upper mold is processed with a resin-molded member to mold the restraining convex portion.The restraining convex portion has a function of blocking the positioning hole of the terminal and suppressing the exposed surface of the upper surface of the terminal. is there.

[0016] Therefore, to suppress the positioning mechanism of the insert are molded the terminal having the configuration described above, together with may accurately to set the position of the molded processed terminal by synthetic resin molding member, which is molded The convex portion can surely prevent dust and water from entering from the outside through the positioning hole of the terminal.

[0017] Thus, the positioning mechanism of the insert are molded the terminal according to the present invention, for example, as the terminal of the electronic component by being mounted in an automobile or the like, under an extremely severe vibration conditions, or dust and moisture often poor outside of such It is the most suitable when it is adopted and used for the terminal used in the environmental condition.

[0018] ↑

Embodiments of the present invention will be described below.
FIG. 1 is an explanatory view schematically showing the configuration in the case where a terminal processed by using a positioning mechanism for a terminal subjected to insert molding processing is applied as a terminal of an electronic component, which is an embodiment of the present invention, and then implemented. 2 is a sectional view showing a schematic configuration for explaining a positioning mechanism of the insert-molded terminal of the present invention with respect to the molded terminal having a cross section taken along the line AA in FIG. 1, and FIG. 3 is a plan view showing a schematic configuration of a positioning hole provided in the terminal of FIG. 2. FIG.

[0019] In FIGS. 1 to 3, terminal 1, a positioning hole 1a provided in the terminal 1, the exposed surface 1b is a contact surface of the upper surface of the terminal 1, the lower side mold 2, the lower side mold 2 The protruding positioning pin 2a, the upper mold 3, and the synthetic resin molding member 4 for making the insert-molded terminal 1 are indicated by the same reference numerals in FIGS. 4 and 5, respectively. It has the same or similar structure as one.

In the insert-molded terminal positioning mechanism according to the present invention, as shown in FIG. 3, a plurality of positioning holes 1a are provided in the terminal 1 and communicate with the positioning holes 1a in the periphery thereof. , 2 in FIG.
The cutout portion 1c is provided. 5 is a pressing convex portion formed on the upper mold 3 side by the synthetic resin molding member 4 from the lower metallic mold 2 flowing through the cutout portion 1c, and 5a is for forming the pressing convex portion 5, It is a forming hole having the same shape as the holding convex portion 5 provided in the upper mold 3. The cutout 1c may be configured as a cutout 1c that does not communicate with the positioning hole 1a.

[0021] Therefore, a description of the operation of the positioning mechanism of the insert are molded the terminal of the present invention. Figure 2
First, by fitting the positioning hole 1a provided in the terminal 1 to the positioning pin 2a protruding from the lower mold 2, the terminal 1 is placed at a predetermined position in the lower mold 2. Will be set. At this time, the length of the positioning pin 2a is set to be equal to or less than the exposed surface 1b of the upper surface of the terminal 1.

[0022] Then, the upper die 3 is disposed at a position opposing the lower mold 2 across the terminals 1, as shown in FIG. 2,
By press-fitting the synthetic resin molding member 4 between the lower mold 2 and the upper mold 3, the terminal 1 insert-molded by the synthetic resin molding member 4 can be produced. At the same time, as shown in FIG. 3, the positioning hole 1a is formed around the positioning hole 1a of the terminal 1.
The synthetic resin molding member 4 from the lower mold 2 that flows through the two notches 1c provided in communication with the mold flows into the molding holes 5a, 4a provided in the upper mold 3, By the inflowing synthetic resin molding member 4, the pressing convex portion 5 and the locking claw 4b having the same shape as the molding holes 5a and 4a are molded on the upper mold 3 side.

The restraining convex portion 5 constructed as described above.
Is molded into a configuration that closes the positioning hole 1a of the terminal 1 as clearly shown in FIG. Therefore, in the positioning mechanism of the insert-molded terminal according to the present invention, the terminal 1 molded by the synthetic resin molding member 4 is used.
The positioning hole 1a of the terminal 1 can be accurately set from the outside by the press-fitting convex portion 5 formed by molding.
It is possible to surely prevent dust and water from entering through. In addition, the pressed convex portion 5 is
Since it has a function of suppressing the exposed surface 1b on the upper surface of the terminal 1, the terminal 1 can be prevented from rising and the terminal 1 can be stably installed.

[0024] The length dimension of the positioning pins 2a described above is in the above exposed surfaces 1b of the upper surface of the terminal 1, may protrude the positioning pins 2a from the exposed surface 1b. In this case, the positioning pin 2a has a volume of a portion protruding from the exposed surface 1b smaller than that of the molding hole 5a of the upper mold 3 so that the resin material does not come out of the molding hole 5a during molding of the mold. You can do this.

[0025]

As described above, according to the positioning mechanism of the insert-molded terminal of the present invention, as disclosed in claims 1 to 5, the notch portion is provided around the positioning hole provided in the terminal. Is provided, and the pressing protrusion is formed on the upper mold side by the synthetic resin molding member from the lower mold flowing through the cutout, and the pressing protrusion closes the positioning hole of the terminal and The structure has a function of suppressing the exposed surface of the upper surface.

[0026] Therefore, as compared with the conventional examples of this type as described above, with can accurately to set the position of the molded processed terminal by synthetic resin molding member,
The molded retaining protrusions can reliably prevent dust and moisture from entering from the outside through the terminal positioning holes, and also prevent terminals from rising and ensure stable terminal installation. It has excellent effects such as being able to. 1

[Brief description of drawings]

FIG. 1 is an explanatory view schematically showing a configuration in a case where a terminal processed by using a positioning mechanism of an insert-molded terminal according to an embodiment of the present invention is applied as a terminal of an electronic component and executed. is there.

FIG. 2 is a cross-sectional view showing a schematic configuration for explaining a positioning mechanism of the insert-molded terminal of the present invention with respect to the molded terminal having a cross section taken along the line AA in FIG.

FIG. 3 is a plan view showing a schematic configuration of a positioning hole provided in the terminal of FIG.

FIG. 4 is a sectional view showing a schematic configuration for explaining a conventional positioning mechanism for insert-molded terminals.

FIG. 5 is a cross-sectional view showing a schematic configuration of a terminal molded by using the positioning mechanism of FIG.

[Explanation of symbols]

1 terminal 1a Positioning hole 1b Exposed surface (contact surface) 1c Notch 2 Lower mold (one mold) 2a Positioning pin 3 Upper mold (other mold) 4 Synthetic resin molded parts 5 Convex convex part 5a Forming hole

Claims (5)

(57) [Claims] 1. A positioning hole provided in a terminal, a positioning pin protruding from one of the molds fitted into the positioning hole, and a position which opposes the one mold with the terminal sandwiched therebetween. In the positioning mechanism for the insert-molded terminal, which comprises the other mold and the molding member press-fitted between the two dies, the molding member provided around the positioning hole of the terminal. And a cutout portion that circulates through the cutout portion, and in order to form a pressing convex portion on the other mold side by the molding processing member that flows through the cutout portion, the pressing convex portion provided on the other mold is the same. A positioning mechanism for insert-molded terminals, characterized in that it has a shape-formed hole. 2. The insert-molded terminal positioning mechanism according to claim 1, wherein the notch is configured to communicate with a positioning hole of the terminal. Positioning mechanism. 3. The positioning mechanism for insert-molded terminals according to claim 1, wherein the length dimension of the positioning pin is such that when the positioning hole of the terminal is fitted into the positioning pin, A positioning mechanism for insert-molded terminals, characterized in that the length is set to be less than or equal to the exposed surface. 4. The positioning mechanism for insert-molded terminals according to claim 1, wherein the retaining projection formed on the other mold side closes the positioning hole of the terminal and the terminal. A positioning mechanism for insert-molded terminals, which has a function of suppressing the exposed surface of the upper surface of the. 5. A positioning mechanism for insert-molded terminals according to claim 1, wherein the molding member is made of synthetic resin.
A positioning mechanism for insert-molded terminals, which is characterized in that it is composed of engineering members .