JP3036145U - Terminals and resin molded products - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: For a flat terminal on the female side, the elastic portion is deformed when it is mounted on a mold, etc., even though the deformation of the elastic portion causes serious quality deterioration. I had to let it. SOLUTION: A protective wall 21 that rises from an end of a base portion 15 of a female side flat terminal 13 that fits into a deep end of a terminal placement hole of a desired body is provided, and the protective wall 21 has an outer surface of an elastic portion 17. The side protection part 35 that wraps around the side is provided. Therefore, since one end of the elastic portion 17 is surrounded by the protection wall 21, the deformation of this end can be prevented almost certainly.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a terminal used as an insert, and in particular, it is formed by integrally forming a plate-shaped base portion, an elastic portion having a portion facing the base portion, and a connecting portion extending from the base portion. The present invention relates to a terminal in which a plate terminal is detachably press-fitted between a base portion and an elastic portion. The present invention also relates to a resin molded product that is insert-molded so that the terminal fits in the terminal placement hole.

[0002]

[Prior art]

 FIG. 7 shows an example of a pair of male and female terminals called flat terminals. Reference numeral 1 indicates a female-side flat terminal made of a metal leaf spring material. The female flat terminal 1 has a rectangular flat plate-shaped base portion 3, two substantially right and left elastic portions 5 extending in the front-rear direction and a semi-cylindrical base portion 3. Not formed more integrally with the connecting part. The elastic portions 5 are formed by being raised from the left and right side edges of the base portion 3 and then bent inward in an arc shape. A male flat terminal 7 is detachably press-fitted into the female flat terminal 1 between the elastic portion 5 and the base portion 3.

The female side flat terminal 1 may be used by being placed in a terminal placement hole formed in the body of a resin molded product. In that case, the female side flat terminal 1 is insert-molded together with the body. It Insert molding is generally performed as follows. In FIG. 8, 9 indicates a terminal mounting portion, and this terminal mounting portion 9 is provided on the mold block of the molding die. The terminal mounting portion 9 is provided with a terminal mounting hole 11. The terminal mounting hole 11 has a size such that the female side flat terminal 1 can be accommodated with some space left at the upper end. A mold block (not shown) is coupled to the terminal mounting portion 9 so as to surround the terminal mounting portion 9, and a cavity having a desired shape is formed between the mold block and the terminal mounting portion 9. Molten resin is injected into this cavity, and the female flat terminal 1 is insert-molded together with the required body.

[0004]

[Problems to be solved by the device]

 Conventionally, when mounting the female side flat terminal 1 into the terminal mounting hole 11, the elastic portion 5 is struck when hitting the terminal mounting portion, inserted in an inclined posture, or pinched with a finger and handled. It had been deformed. If the elastic part 5 is deformed in this type of terminal, it becomes impossible to insert the male flat terminal 7, or conversely, the crimping force decreases and the inserted state of the plate terminal becomes unstable. Therefore, the deformation of the elastic portion 5 causes a serious quality defect. Deformation of the elastic portion 5 due to such a cause is likely to occur at the end portion.

Further, in this female side flat terminal 1, it is not possible to fill the upper and lateral sides of the elastic portion 5 with resin because of the necessity of ensuring elastic deformation of the elastic portion 5. Therefore, even if the female side flat terminal 1 fits in the terminal placement hole of the body, it is moved each time the male side flat terminal 7 is inserted or removed, and this causes the female side flat terminal 1 to move. The posture may be tilted or deformed.

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to provide a terminal capable of reliably preventing the deformation of the elastic portion.

Another object of the present invention is to provide a resin molded product that can fix the attitude of the terminal without surrounding the elastic portion of the insert-molded terminal with resin from the outside.

[0008]

[Means for Solving the Problems]

 According to a first aspect of the present invention, a plate-shaped base portion, an elastic portion having a portion facing the base portion in the plate thickness direction, and a connecting portion extending from the base portion are integrally formed. A terminal that is placed in a terminal placement hole of the body by insert molding together with a required body, and a plate terminal is detachably press-fitted between the base portion and the elastic portion. The terminal is characterized in that it has a protection wall raised from an end that fits into the rear end of the arrangement hole, and that the protection wall has a side protection part that wraps around to the outer surface side of the elastic part.

A second aspect of the present invention is the terminal according to the first aspect, wherein the connecting portion extends from a position other than an end of the base portion where the protective wall is provided.

According to a third aspect of the present invention, a plate-shaped base portion, an elastic portion having a portion facing the thickness direction of the base portion, and a connecting portion extending from the base portion are integrally formed. Is a resin molded product in which the terminal is placed in a terminal placement hole of the body by insert-molding the terminal with a required body, and A protective wall is provided that has a side protection part that rises from the end and wraps around the outer surface of the elastic part.The outside of the side protection part is filled with resin and the terminal protection wall The resin molded product is characterized in that a convex portion is provided which abuts from the opening surface side of the arrangement hole.

[0011]

[Embodiment of the invention]

 Embodiments of a terminal and a resin molded product of the present invention will be described below with reference to FIGS. 1 to 6. The female flat terminal 13 according to the embodiment of the present invention will be described. The female flat terminal 13 includes a base portion 15, two elastic portions 17 on the left and right sides, a connecting portion 19, and a protective wall 21 which are integrally formed by a metal leaf spring material. The base portion 15 has a rectangular flat plate shape.

The elastic portion 17 has a substantially semi-cylindrical shape extending in the front-rear direction. The elastic portions 17 stand up from the left and right side edges of the base portion 15 respectively, and then bend so as to draw arcs toward each other. The tip end 23 of the elastic portion 17 faces the base portion 15 with a gap substantially the same as the thickness of the male flat terminal 25 (see FIG. 2). The front end edge of the elastic portion 17 is inclined so as to be displaced rearward as it goes to the tip 23.

The connecting portion 19 extends from the front end of the base portion 15. The connecting portion 19 is composed of a continuous portion 27 slightly extending forward from an intermediate portion of the front end edge of the base portion 15, and a crank portion 29 bent in a substantially crank shape. The left half of the crank portion 29 is a jack portion 31.

The protection wall 21 has a substantially U shape when viewed from above. The protective wall 21 includes a rear protective portion 33 that vertically rises from the entire rear end of the base portion 15, and a lateral portion that bends forward from both left and right ends of the rear protective portion 33 and wraps around the outer surface side of the elastic portion 17. It is composed of a protection unit 35. Therefore, the rear end of the elastic portion 17 is surrounded by the protective wall 21. The length of the protective wall 21 is slightly higher than the height of the elastic portion 17, and there is a gap between the protective wall 21 and the rear end of the elastic portion 17.

Next, the back cover 37 according to the embodiment of the resin molded product of the present invention will be described (see FIGS. 2 and 3). The female flat terminal 13 is insert-molded together with the back cover 37. The back cover 37 includes a disc portion 39, an annular peripheral wall portion 41 projecting forward from the disc portion 39, and a terminal mounting portion 43 projecting rearward from a position biased toward the outer peripheral portion of the disc portion 39. And a socket portion 45 protruding leftward from the terminal mounting portion 43 are integrally formed.

Reference numeral 47 denotes a terminal arrangement hole, which is formed in the terminal mounting portion 43 and is open on the front surface of the disc portion 39. The horizontal cross section of the terminal placement hole 47 is a rectangle that is slightly larger than the base portion 15 of the female side flat terminal 13, and the vertical cross section is a horizontally long rectangle. The height of the terminal arrangement hole 47 is approximately twice the height of the protective wall 21 of the female side flat terminal 13.

Most of the female side flat terminal 13 except for the crank portion 29 fits into the terminal placement hole, the crank portion 29 is embedded in the terminal mounting portion 43, and the jack portion 31 projects into the socket portion 45. ing.

Portions 49 a of the rear wall 49 of the terminal mounting portion 43 that correspond to the left and right sides of the female flat terminal 13 project slightly into the terminal placement holes 47 and fill the outside of the rear half of the side protection portion 35. ing. As a result, the position of the rear end portion of the female side flat terminal 13 in the left-right direction is fixed.

Reference numeral 51 denotes a pressing convex portion, and the pressing convex portion 51 projects downward from an intermediate portion in the left and right direction of the ceiling surface of the terminal arrangement hole 47 and extends in the front-rear direction, and the rear end of the protective wall 21. It is in contact with the upper end of the rear protection part 33. Therefore, the rear protection portion 33 is sandwiched by the rear wall 49 and the pressing projection 51 from the front and back. Therefore, the position of the female side flat terminal 13 in the front-back direction is further stabilized.

Reference numeral 53 denotes a mold (see FIGS. 4 to 6) for molding the back cover 37 together with the female-side flat terminal 13 (only the essential parts are shown in the drawings). Reference numeral 55 denotes one mold block, and this mold block 55 has a parting surface 57 that defines the front surface of the disc portion 39 of the back cover 37. Further, the mold block 55 is provided with a terminal placement hole forming projection 59 that projects rearward from the parting surface 57. The terminal placement hole forming convex portion 59 has a vertical cross-section whose outer shape (see FIG. 6) is a substantially horizontally long rectangular shape, and a terminal mounting hole 61 which is substantially similar to the outer shape thereof is formed. A deep groove 63 is formed in the portion. The bottom wall portion 65 of the groove 63 projects slightly rearward from the other portions. The terminal mounting hole 61 is opened downward in the middle portion in the left-right direction.

The female flat terminal 13 is mounted to the mold block 55 by inserting the base portion 15 and the elastic portion 17 of the female flat terminal 13 into the terminal mounting hole 61 from the rear side. At this time, the rear end of the base portion 15 of the female side flat terminal 13, the rear portion of the rear protection portion 33, and the rear half portion of the side protection portion 35 stick out rearward from the terminal mounting hole 61, and the rear protection portion 33 has an upper end portion. The rear end of the bottom wall portion 65 abuts (see FIG. 5).

Reference numeral 67 denotes another mold block, and this mold block 67 mainly defines the back surface of the back cover 37. When the mold is closed, a part of the mold block 67 is positioned so as to surround the terminal placement hole forming convex portion 59, and a cavity 69 for the terminal mounting portion 43 and the like is formed. In this state, the protective wall 21 of the female side flat terminal 13 also functions as a member that defines the rear surface of the terminal placement hole 47.

Therefore, by injecting the molten resin 71 into the cavity 69, the terminal mounting portion 43, the terminal arrangement hole 47, the pressing convex portion 51, and other portions are formed, and further, one of the rear walls 49 of the terminal mounting portion 43. The portion 49a wraps around the outside of the side protection portion 35 of the protection wall 21 and sandwiches the protection wall 21 from both left and right sides.

Although the embodiment of the present invention has been described in detail above, the specific configuration is not limited to this embodiment, and there may be changes in design within the scope not departing from the gist of the present invention. Also included in the present invention. In particular, the structure of the terminal and the type of resin molded product are not limited to those shown in the embodiments.

[0025]

[Effect of the invention]

 As described above, according to the first aspect of the invention, since the one end of the elastic portion is located inside the protective wall, it is possible to prevent the deformation of at least one end of the elastic portion substantially reliably.

According to the second aspect of the invention, the protective wall can function as a mold for defining the inner surface of the terminal placement hole, so that the structure of the mold is simple.

According to the third aspect of the present invention, since the outer side of the side protection portion is filled with the resin, the position of the terminal with respect to the side is fixed, whereby the attitude of the terminal is fixed without the elastic portion being fixed from the outer side with the resin. Can be fixed. Further, since the protection wall of the terminal is provided with the convex portion that abuts from the opening surface side of the terminal placement hole, the position of another terminal paired with this terminal in the insertion direction is stabilized.

[Brief description of the drawings]

FIG. 1 is a perspective view of a female flat terminal according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a back cover according to an embodiment of the resin molded product of the present invention with a part thereof cut away.

FIG. 3 is an enlarged sectional view taken along the line AA of FIG. 2;

FIG. 4 is a horizontal cross-sectional view showing a main part of a mold for molding the back cover shown in FIG. 2 together with the terminals shown in FIG.

FIG. 5 is a sectional view taken along line BB of FIG. 4;

FIG. 6 is a sectional view taken along line CC of FIG. 5;

FIG. 7 is a perspective view showing an example of a conventional flat terminal.

FIG. 8 is a perspective view showing a part of a die for insert-molding the female-side flat terminal shown in FIG.

[Explanation of symbols]

 1 Female Flat Terminal 3 Base Part 5 Elastic Part 7 Male Flat Terminal 9 Mold Terminal Mounting Part 11 Terminal Mounting Hole 13 Female Flat Terminal 15 (Female Flat Terminal) Base Part 17 (Female Side) Elastic part 19 (of flat type terminal) Connection part 21 (of female side flat type terminal) 21 Protective wall (of female side flat type terminal) 23 Tip (of elastic part) 25 Male side flat type terminal 27 (of connection side) Continuous part 29 Crank part (of connection part) 31 Jack part (of connection part) 33 Rear protection part (of protection wall) 35 Side protection part (of protection wall) 37 Back cover 39 Disc part (of back cover) 41 (Back) Peripheral wall part 43 (on back cover) Terminal mounting part 45 (on back cover) Socket part 47 (on back cover) Terminal arrangement hole 49 Rear wall on terminal mounting part 49a Projection on rear wall 51 Presser Convex part 53 Mold 55 One mold block 57 Parting surface (of the mold block) 59 Protrusions for forming terminal placement holes (of the mold block) 61 Terminal mounting holes 63 (for projections for forming terminal placement holes) Grooves 65 (for projections for forming terminal placement holes) 65 Bottom wall (of groove) 67 Separate mold block 69 Cavity 71 Molten resin

Claims (3)

[Utility model registration claims] 1. A required body, comprising a plate-shaped base portion, an elastic portion having a portion opposed to the base portion in the plate thickness direction, and a connecting portion extending from the base portion, which are integrally formed. A terminal to which a plate terminal is detachably press-fitted between the base portion and the elastic portion by being insert-molded with the terminal portion to be placed in the terminal arrangement hole of the body. A terminal provided with a protection wall raised from an end that fits into an end, the protection wall having a side protection part that extends around an outer surface of the elastic part. 2. The terminal according to claim 1, wherein the connecting portion extends from a position of the base portion other than an end where the protective wall is provided. 3. A terminal comprising a plate-shaped base portion, an elastic portion having a portion opposed to the base portion in the plate thickness direction, and a connection portion extending from the base portion, which are integrally formed, A resin molded product in which the terminal is placed in a terminal placement hole of the body by insert molding the terminal together with a required body, and the terminal stands from the end of the base portion that fits into the deep end of the terminal placement hole. A protection wall having a side protection part that is raised and wraps around the outer side of the elastic part is provided.
A resin molded product, characterized in that the outside of the side protection portion is filled with resin, and a convex portion that is in contact with the protection wall of the terminal from the opening surface side of the terminal placement hole is provided.