JPH0342637Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a contact positioning mechanism of a crimping tool used for crimping and connecting a contact to an electric wire.

[Conventional technology]

FIG. 4 shows a manual crimping tool as an example of a crimping tool for crimping and connecting contacts to electric wires. This crimping tool 1 includes a frame 2, a terminal crimping die 3,
Consisting of a terminal crimping anvil 4 and a contact positioning mechanism 5, by gripping handles 2a and 2b provided on the frame 2 together, the terminal crimping anvil 4 is connected to the terminal crimping anvil via a link mechanism (not shown) built into the frame 2. 4 toward the terminal crimping die 3. This terminal crimping die 3 is the fifth
As shown in the figure, crimp recesses 3a of different sizes (for example, wire sizes AWG #22 to
(applicable to wire size AWG #24) and a crimp recess 3b (applicable to wire size AWG #26 to #28, for example). On the other hand, the terminal crimping anvil 4 is provided with protrusions 4a and 4b facing the crimping recesses 3a and 3b. A contact insertion hole 5 is provided in the extending direction of the protrusions 4a and 4b.
A contact positioning mechanism 5 for positioning a is fixed to the terminal crimping anvil 4, and the contact 6 shown in the figure is positioned by this contact positioning mechanism 5. The contact 6 has a contact portion 6 at one end.
1a and 61b, and a core wire crimping part 62 on the other end side.
a-1, 62b-1 and covering crimping parts 62a-2, 6
Open barrel crimp part 62 consisting of 2b-2
a, 62b. Furthermore, even if the dimensions and shapes of the crimp parts 62a and 62b of the contacts 6 shown in the figure are the same, the pin contacts 6a have different overall length dimensions.
It consists of two types: and socket contact 6b.
In order to position each contact, the contact positioning mechanism 5, as shown in FIG.
) and a contact positioning mechanism 5-2 for the socket contact (see b in the same figure). These contact positioning mechanisms 5-1, 5
-2 has substantially the same configuration although the dimensions etc. are different, and the guide members 51, 51', the regulating member 52,
52' and fixing members 53, 53'. Fixing member 5 fixed to terminal crimping anvil 4
Guide members 51, 5 having grooves 51a, 51'a into which the contacts 6 are inserted are arranged on the upper surfaces of the guide members 3, 53'.
By fixing 1', the contact insertion hole 5a,
5'a is formed. The regulating members 52, 52' are made by bending a metal plate with spring properties into an L shape, and one bent piece 52b, 52'b is made to face the contact insertion hole 5a, 5'a. hand,
The other bent pieces 52a, 52'a are attached to the fixing member 53,
53'. Therefore, contact insertion hole 5
The contacts 6 inserted into the bending pieces 52b and 52'b are brought into contact with the tip surfaces of the bent pieces 52b and 52'b, thereby positioning the contacts 6.

Therefore, in order to connect the contact 6 and the electric wire 7 by crimping, the contact insertion hole 5 of the contact positioning mechanism 5-1 or 5-2 attached to the crimping tool 1 is used.
Contact portions 61a, 61 of the contact 6 on a, 5'a
Insert b. Then, the crimping parts 62a and 62b are positioned on the protrusions 4a and 4b of the terminal crimping anvil 4 so that the terminal crimping die 3 and the terminal crimping anvil 4 can be crimped. Next, the wire 7 which has undergone terminal treatment is attached to the crimp portions 62a, 6 of the contact 6.
2b, the handles 2a and 2b are gripped together, and the terminal crimping die 3 and the terminal crimping anvil 4 are brought into engagement, thereby crimping and connecting the contact 6 and the electric wire 7.

[Problem that the invention attempts to solve]

However, as mentioned above, the pin contact 6
In order to connect the socket contact a and the socket contact 6b to the electric wire 7 by crimping, a dedicated contact positioning mechanism 5 is used.
It was necessary to prepare two types of crimping tools 1, one having a crimping tool 1 and one having a crimping tool 5-2, and it was also necessary to use them properly during crimping work, which was troublesome. SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a contact positioning mechanism for a crimping tool which can be attached to the crimping tool to position both the pin and socket contacts 6a and 6b.

[Means for Solving Problems] According to this invention, there is a terminal crimping anvil on which the wire crimping portion of the contact is placed, and a terminal crimping device in which the wire crimping portion on the terminal crimping anvil is pressed and bent to crimp the wire. a die, and a contact positioning mechanism having a contact insertion hole with a closed bottom, which is attached to one side of the terminal crimping anvil and positions the wire crimping part on the terminal crimping anvil by inserting and abutting the contact part side of the contact. In the crimping tool, the insertion hole has a large diameter for inserting the contact portion of the socket contact into the insertion hole for positioning the socket contact, and the contact portion of the pin contact can be inserted continuously into the insertion hole. However, the contact portion of the socket contact is formed in a two-stage shape with an insertion hole for positioning the pin contact that cannot be inserted. To position the pin contact 6a using the contact positioning mechanism of the present invention constructed in this manner, the contact portion 61a of the pin contact 6a is inserted into the contact insertion hole first. Therefore, the contact portion 61a inserted through the contact insertion hole is positioned by passing through the insertion portion of the pedestal and coming into contact with the regulating member. On the other hand, when positioning the socket contact 6b, the contact part 61b is inserted into the contact insertion hole first, but the contact part 61b that has reached the insertion part of the pedestal has an external dimension that is smaller than that of the insertion part of the pedestal. Because it is larger than the cross-sectional dimension, the contact part 6
1b cannot pass through the insertion part of the pedestal and is positioned by coming into contact with the peripheral surface of the insertion part.

In this way, the contact positioning mechanism of the present invention is
Both the pin and socket contacts 6a, 6b can be positioned by bringing the contact portions 61a, 61b of the contacts into contact with the surface of the regulating member and the peripheral surface of the insertion portion of the pedestal. Therefore, by installing this positioning mechanism, only one type of crimping tool is required.
In addition, there is no need to use two types of crimping tools for pins and sockets as in the prior art, and a contact positioning mechanism that improves workability can be obtained.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an exploded perspective view of a contact positioning mechanism 8 of the present invention and a terminal crimping anvil 4 to which the contact positioning mechanism 8 is attached.

In the figure, the contact positioning mechanism 8 includes a guide member 81, a pedestal 82 built into the guide member 81,
Regulation member 83 made of a metal plate with spring properties
and a fixing member 84 fixed to the terminal crimping anvil 4 with a screw 85.

The guide member 81 has an insertion groove 81a formed on the lower surface side of the front end thereof, which faces the protrusions 4a and 4b of the terminal crimping anvil 4. A notch 81b is formed on the lower surface side of the rear end of the guide member 81 in communication with the insertion groove 81a, and a pedestal 82, which will be described later, is disposed within this notch 81b. Note that a hole 81c through which a screw 86 is inserted is provided from the upper surface to the lower surface of the guide member 81. The fixing member 84 has a recess 84a formed in its upper surface into which the guide member 81 described above is inserted, and a screw hole 84b for a screw 86 provided in the bottom surface of the recess 84a. Further, a hole 84c through which a screw 85 is inserted is provided so as to penetrate from the rear side to the front side.

The pedestal 82 has a substantially rectangular shape, and when the guide member 81 is assembled into the recess 84a of the fixing member 84, the recess 84a and the notch 8 of the guide member 81 are connected to each other.
1b (see Fig. 2)
It is slidably inserted into the inside.

As shown in FIG. 3, the pedestal 82 is provided with a notch 82a on the lower surface of the front end, and an inverted V-shaped groove insertion portion 82b is formed continuously from the notch 82a. The cross-sectional dimension of this insertion portion 82b is larger than the outer diameter dimension of the contact portion 61a of the pin contact 6a,
Moreover, it is set to be smaller than the outer diameter of the contact portion 61b of the socket contact 6b. When the pedestal 82 is inserted into the space S,
The insertion portion 82b of the pedestal 82 is aligned with the insertion groove 81a of the guide member 81 via the notch 82a.

The regulating member 83 is formed into a rectangular plate that substantially covers the rear end surface of the fixing member 84, and has a hole 83a at the bottom through which a screw 85 is inserted. Next, to explain how to assemble each of the above parts, first insert the guide member 81 into the recess 84a of the fixing member 84 into the groove 81a.
is fixed with a fitting screw 86 toward the lower front side. Then, a cradle 82 is placed in the space S formed by the notch 81b and the recess 84a of the guide member 81.
Insert the notch 82a side first. Next, while applying the regulating member 83 to the rear end surface of the pedestal 82 and the fixing member 84, insert the screw 85 into the hole 83a of the regulating member 83 and the hole 84c of the fixing member 84.
Screw hole 4c of terminal crimping anvil 4 (see Figure 2)
to be screwed together. Therefore, the contact positioning mechanism 8 can be mounted on the crimping tool 1 by incorporating the pedestal 82 in the space S without any play.

Next, a method for positioning the contacts 6 using the contact positioning mechanism 8 mounted on the crimping tool 1 will be explained using FIG. 2.

Figure a shows a state in which the pin contact 6a is positioned within the contact positioning mechanism 8. That is, the pin contact 6a is inserted into the contact insertion hole 8 formed by the insertion groove 81a of the guide member 81 and the bottom surface of the recess 84a of the fixing member 84, with the contact portion 61a side first.
Insert into a. Therefore, the pin contact 6a is guided into the contact insertion hole 8a, and the contact part 61a is inserted into the insertion part 82b of the pedestal 82, and the contact part 6a is inserted into the insertion part 82b of the pedestal 82.
The distal end surface of 1a is brought into contact with the regulating member 83. As a result, the pin contact 6a is positioned with the crimp portion 62a placed on the protrusion 4a of the terminal crimp anvil 4.

Next, the positioning state of the socket contact 6b is shown in FIG. The contact part 61b side is inserted into the contact insertion hole 8a in the same way as the pin contact 6a, but the contact part 61b that has reached the pedestal 82 has an external dimension larger than the cross-sectional dimension of the insertion part 82b as described above, so it cannot be contacted. The portion 61b cannot pass through the insertion portion 82b. As a result, the socket contact 6b connects the distal end surface of the contact portion 61b to the peripheral surface 82c of the insertion portion 82b.
The position is determined by contacting the

In this way, in the contact positioning mechanism 8,
The position of the plate surface of the regulating member 83 that the tip end surface of the contact portion 61a of the pin contact 6a abuts, and the insertion portion 82 of the pedestal 82 that the socket contact 6b abuts.
By setting the position of the peripheral edge surface 82c of the pin and socket contacts 6a, 6 in advance,
Both of b can be positioned. Contact 6
usually extends slightly in the axial direction of the contact 6 when the crimping portions 62a and 62b are crimped and deformed by the terminal crimping die 3 and the terminal crimping anvil 4 and connected to the electric wire 7. At that time, the pin contact 6a is connected to the contact portion 61.
By directly pressing the regulating member 83 with the distal end surface of the contact member a and bending the regulating member 83 backward against the elasticity of the regulating member 83, it is possible to prevent the contact from being deformed and damaged due to elongation during crimping. Also socket contact 6
In the case of b, the tip of the contact portion 61b presses the pedestal 82 and bends the regulating member 83 backward through the pedestal 82, thereby preventing deformation and damage as in the case of the pin contact 6a.

As is clear from the above description, the contact positioning mechanism 8 of the present invention can be used for positioning both pin and socket contacts 6a and 6b, which have the same crimp portion but different overall lengths. Therefore, during the crimping work, the pin and socket contact positioning mechanisms 5-1 and 5 are used as before.
There is no need to prepare two types of crimping tools each equipped with the crimping tools 2 and 2, and the trouble of using these crimping tools properly is also eliminated, further improving work efficiency and having great practical effects.

[Effect of idea]

As described above, the contact positioning mechanism of the present invention is provided with a pedestal having an insertion portion into which a pin contact can be inserted, but into which a socket contact cannot be inserted. Therefore, the pin contact passes through the insertion portion and is positioned by coming into contact with the regulating member. Further, the socket contact is not inserted into the insertion section, but is positioned by coming into contact with the peripheral surface of the insertion section. Therefore, when crimping pin and socket contacts whose crimping parts have the same size and shape but different overall lengths, it is sufficient to prepare one type of crimping tool, that is, a crimping tool equipped with the contact positioning mechanism of the present invention, or use the conventional crimping tool. This eliminates the hassle of preparing two types of crimping tools for pins and sockets and having to use each separately.
Therefore, it is possible to provide a contact positioning mechanism for a crimping tool with improved workability.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of a contact positioning mechanism and a terminal crimping anvil showing an embodiment of the present invention;
Figure 2a is a vertical cross-sectional view showing the pin contact positioning state, Figure b is a vertical cross-sectional view showing the socket contact positioning state, Figure 3 is a front view and side view of the pedestal, and Figure 4 is crimping. A front view and a side view of the tool, FIG. 5 is a partial perspective view of the crimping tool and a perspective view of the wire and contact to be crimped and connected, and FIGS. 6 a and b are pins and sockets using a conventional contact positioning mechanism. FIG. 3 is a longitudinal cross-sectional view showing a positioning state of contacts. 1; Crimping tool, 3; Terminal crimping die, 4; Terminal crimping anvil, 5-1, 5-2, 8; Contact positioning mechanism, 6; Contact, 6a; Pin contact, 6b; Socket contact, 61a, 6
1b; contact portion, 62a, 62b; crimp portion, 8a;
Insertion hole, 82b; insertion part.

Claims (1)

[Scope of utility model registration request] A terminal crimping anvil on which the wire crimping part of the contact is placed; a terminal crimping die that presses and bends the wire crimping part on the terminal crimping anvil to crimp the wire; A crimping tool is equipped with a contact positioning mechanism having a contact insertion hole with a closed bottom that positions the wire crimping part on the terminal crimping anvil by inserting the terminal side and abutting the tip of the socket contact. An insertion hole with a large diameter for positioning the socket contact into which the contact part can be inserted, and a diameter that allows the contact part of the pin contact to be inserted continuously into this insertion hole, but the contact part of the socket contact cannot be inserted. A contact positioning mechanism for a crimping tool, characterized in that it is formed in a two-stage shape with an insertion hole for positioning a small pin contact.