JP4791920B2 - Manual crimping tool - Google Patents

Description

  The present invention relates to a manual crimping tool for manually crimping and connecting a crimping terminal to a core wire of a lead wire, and in particular, a crimping die for crimping and fixing a crimping terminal to a lead wire according to the lead wire size. The present invention relates to a replaceable manual crimping tool.

  As a method of connecting a terminal to a lead wire, a crimp connection method in which a core wire and a terminal of a lead wire are compressed and connected by an external force has been known for a long time. This connection method usually has a fixed crimping part for holding a lead wire and a crimping terminal, and a movable crimping part that presses against the fixed crimping part and crimps and fixes the crimping terminal to the core wire. Are called “crimp and anvil”, “male die and female die” or “male die and female die” (hereinafter referred to as “male die”, “female die”, male die). A generic term for mold dies and female dies is called “crimp die”).

  In general, such a crimping connection is such that a dedicated crimping connection device is installed in a factory or the like to automatically connect terminals and lead wires. Such a connection device is limited to a case where the number of connections is relatively large. However, in recent years, in industrial equipment such as information control systems, transportation systems, and building systems, or maintenance sites thereof, direct connection work is performed at the maintenance site instead of work in the factory from the viewpoint of cost and convenience. Therefore, a manual crimping tool capable of such work has been developed (for example, see Patent Document 1 below).

FIG. 9 is a front view showing a manual crimping tool described in Patent Document 1 below.
The crimping tool 30 includes a pair of hook-shaped handles 32 and 32 rotatably supported by a pivot shaft 31, and a crimping operation piece supported on the hook-shaped handles 32 and 32 by connecting shafts 33 and 33. 34. The crimping operation piece 34 includes two metal jaw pieces 36, 36 each having biting teeth 35, 35 meshing with each other, and these metal jaw pieces 36, 36. It is composed of a connecting side plate 38 connected by rotation support shafts 37, 37, and by closing the pair of hook-shaped handles 32, 32, the pair of biting teeth 35, 35 turns the crimp terminal into the lead wire core wire. Crimp connection is made. According to this crimping tool, since the pair of hook handles are relatively long, the terminals and the lead wires can be easily and reliably connected using the lever action of the long handles. A similar crimping tool is also described in Patent Document 2 below.

  Further, since this type of crimping tool is generally made of steel, its weight is heavy. For example, there are some which exceed 1 kg, and considerable arm force is required to handle such a heavy tool. Therefore, in order to reduce such labor, a device has been developed in which a crimping device is attached to a manual crimping tool, and more specifically, a pair of handles is provided with a crimping device that mechanically closes these handles. (See Patent Document 3 below).

  Furthermore, all of the manual crimping tools described in these patent documents connect one crimp terminal and one lead wire individually in sequence, and there are limitations in increasing work efficiency. A manual crimping tool has also been developed in which individual crimping terminals are supplied to a crimping die so that continuous connection is possible (see, for example, Patent Document 4 below).

Japanese Utility Model Publication No. 7-33420 (FIG. 2, scope of claims for utility model registration) Japanese Patent No. 3331042 (FIG. 2, paragraphs [0008] and [0009]) JP-A-8-130080 (FIG. 1, paragraphs [0021] to [0023]) JP-A-9-219271 (FIG. 2, paragraphs [0008] to [0012])

  The crimping tools described in Patent Documents 1 to 5 are all for crimping and connecting a lead wire and a terminal of a predetermined size, and the crimping die is a dedicated product of a specific size, and connection of different sizes Cannot be used for Therefore, if the size is different, a crimping tool having a crimping die matching the size is required. For a lead wire having a lead wire size and a skin diameter of, for example, 1.10 mm or more, if the crimping die has to be changed every time the skin diameter increases by 0.10 mm, the skin diameter ranges from 1.10 mm to 3.30 mm. For the lead wires, at least about nine types of crimping dies, that is, crimping tools are required. Therefore, since the number of tools corresponding to the change in the lead wire size is required for the crimping tool, it is expensive to arrange these tools. On the other hand, if the weight of the tool exceeds 1 kg, As a result, the total weight becomes extremely large, and it becomes difficult to carry and manage to the maintenance site. In addition, in order to eliminate such inconvenience, there is a commercially available product that allows the handle part and the crimping part to be separated so that the handle part can be used in common and the crimping part can be replaced with one that matches various sizes. Yes. However, even in this crimping tool that can replace the crimping part, the crimping part requires a member formed with a crimping part that matches various lead wire sizes, that is, a so-called crimping head. The same challenges as tools exist.

  Accordingly, the present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a manual crimping tool that can individually replace the male die and the female die constituting the crimping die. There is.

  Another object of the present invention is to provide a manual crimping tool capable of exchanging a male die and a female die without using a special tool.

  Another object of the present invention is to provide a manual crimping tool that prevents an erroneous occlusion between a male die and a female die to be exchanged.

  Furthermore, the other object of this invention is to provide the manual crimping tool which can connect several terminals continuously.

In order to achieve the above object, an invention relating to a manual crimping tool according to claim 1 is directed to a head member having a pair of crimping dies having interlocking teeth meshing with each other, and one end of the head member pivoted on a support shaft. An operation handle having a pair of gripping frames that are supported and openable at the other end, and a manual crimping tool that crimps and connects the terminal into which the lead wire is inserted by the head member by operating the operation handle, The pair of crimping dies are coupled to the head member by a detachable fixing means, and are composed of a female die having a female occlusion tooth and a male die having a male occlusion tooth meshing with the female occlusion tooth, The head member includes a head main body formed with a gap groove for coupling the female die facing a pair of side walls having through holes, and a slide on the head main body. A slide member that is movably mounted and to which the male die is coupled, the head body is coupled to a pair of gripping frames of the operation handle, the slide member is coupled to the handle by a support shaft, The female die is composed of two divided first and second divided female dies, and the first and second divided female dies have a predetermined width length, length, and thickness, and are attached. The base body of the elongated plate-like body in which the hole is formed, and the occlusal teeth having different sizes are provided at the opposite ends of the base, and the press-contacting ring is interposed on the coupling surface of the mounting holes. The fixing means for joining the head main body and the female die is provided in the through hole provided in the head main body and the base of the female die. The pressure contact ring mounted in the mounting hole; Characterized in that it is composed of a mounting rod to be pressed into the press-contact ring is inserted into the mounting holes and the through-hole.

According to a second aspect of the present invention, in the manual crimping tool according to the first aspect, a terminal guide member that continuously feeds a plurality of terminals is attached to the head member, and the terminal guide member The terminal is fed to the crimping die.

The invention according to claim 3 is the manual crimping tool according to claim 2 , wherein the male die unit is formed by fixing the male die to a support member and incorporating the male die into the terminal guide member, and the male die The support member of the die unit is connected to the slide member by a detachable fixing means.

Invention according to claim 4, in the manual crimping tool of claim 3, wherein the anchoring means, the a mounting hole provided in the support member, a mounting hole provided in the slide member, these mounting hole It is characterized by comprising a mounting rod having stop means for preventing slipping out by being inserted into and rotated.

The invention according to claim 5 is the manual crimping tool according to any one of claims 1 to 4 , wherein the female die is interposed between the female die fixed to the head body and the male die unit. An erroneous occlusion prevention means for preventing erroneous engagement between the die and the male die is provided.

According to a sixth aspect of the present invention, in the manual crimping tool according to the fifth aspect of the present invention, the erroneous bite prevention means includes identification marks attached to support members of the female die and the male die unit. When the female die and the male die unit are mounted on the head body, the identification mark can be collated.

According to a seventh aspect of the present invention, in the manual crimping tool according to the fifth aspect , the erroneous bite prevention means is provided in a key groove provided in one of the female die and the support member and in the other. And a small pin inserted into the key groove.

  The present invention provides the following excellent effects by having the above configuration. That is, according to the first aspect of the present invention, since the pair of crimping dies are coupled to the head member pivotally supported by the operation handle by the detachable fixing means, the crimping dies are appropriately replaced according to the lead wire size. It becomes possible. Therefore, connection of lead wires of different sizes can be performed efficiently and simply by replacing the crimping die of one crimping tool, and there is no need to prepare crimping tools for each lead wire size as in the prior art, The cost can be reduced and the management of the crimping tool becomes easy.

Also , the pair of crimping dies is composed of a female die having a female occlusal tooth and a male die having a male occlusal tooth meshing with the female occlusal tooth, so that the occlusal engagement of both occlusal teeth is improved. The terminal into which the lead wire is inserted is surely crushed.

In addition , the female die can be used with two different sizes of lead wire connection by providing female occlusal teeth of different sizes at the opposite ends of the base. become.

The head member is composed of a head main body and a slide member. By connecting a female die and a male die to these members, a pair of dies can be smoothly meshed by moving either the head main body or the slide member. Can.
Further, the fixing means between the head main body and the female die is inserted into the mounting hole provided in the head main body, the pressure contact ring attached to the through hole provided in the crimping base of the female die, and the mounting hole and the through hole. In this way, the head body and the female die can be easily combined by using the mounting rod that is press-fitted into the press-contact ring. In particular, a fixing means such as a nut for fixing the mounting rod becomes unnecessary.

According to the invention of claim 2 , a terminal guide member that continuously feeds a plurality of terminals to the crimping die is mounted on the head member, and the terminals are fed by feeding the terminals from the terminal guide member to the die. The efficiency of the connection work can be greatly increased as compared with the case of crushing by sandwiching them individually between a pair of dies.

According to the invention of claim 3 , the male die is fixed to the support member and incorporated into the terminal guide member to form a male die unit, and the support member of this unit is coupled to the slide member, A male die unit can be formed by selecting a terminal guide member suitable for the lead wire size. Further, the coupling to the slide member is simplified.

According to the invention of claim 4, the coupling between the support member and the slide member male die is fixed, a mounting hole provided in the support member, a mounting hole provided in the slide member, these mounting hole By using a fixing means comprising a mounting rod having a stopping means that is inserted and prevented from coming off by rotation, the support member and the sliding member can be easily connected and detached.

According to the invention of claim 5 , the erroneous engagement between the female die and the male die can be prevented by the erroneous occlusion prevention means.

According to the sixth aspect of the present invention, the erroneous occlusion prevention means can be realized by providing the identification mark without particularly processing the female die and the support member, so that the erroneous occlusion can be prevented by simple means. .

According to the seventh aspect of the present invention, the erroneous occlusion can be reliably prevented by configuring the erroneous occlusion prevention means by the key groove and the small pin inserted into the key groove.

  Hereinafter, the best embodiment of the present invention will be described with reference to the drawings. However, the embodiment shown below exemplifies a manual crimping tool for embodying the technical idea of the present invention, and is not intended to identify the present invention as this manual crimping tool. Other embodiments within the scope of the claims are equally applicable.

1 is a front view of a manual crimping tool according to an embodiment of the present invention, FIG. 2 is a diagram showing a head member of the manual crimping tool of FIG. 1, FIG. 2 (a) is a front view of the head member, and FIG. (b) is a side view of the head member as seen from _the direction _{X 1} in FIG. 2 (a), FIG. 2 (c) cross sectional view of line a-a of the head member of Fig. 2 (a), and FIG. 3 is 2 It is the disassembled perspective view which decomposed | disassembled the head member of (a). FIG. 3 also shows an exploded perspective view in which the male die unit 7 and the female die 14 are further disassembled in addition to the perspective view in which the entire head member is exploded.
As shown in FIG. 1, the manual crimping tool 1 includes an operation handle 2 that is pivotally supported at one end by a spindle and can be opened and closed, and a head member 4 coupled to the spindle and the end of the operation handle 2. The head member 4 has a configuration in which a crimping die for crimping a terminal (not shown) to the lead wire is mounted.

Operation handle 2 has a pair of gripping frame 2a, 2b of a predetermined length, these gripping frame 2a, one end of 2b is pivotally supported by the support shaft 3 _0. The opposing side portions of the pair of gripping frames 2a and 2b are coupled by a latch mechanism 2c. The latching mechanism 2c comprises a detent lever which the toothed engagement teeth are engraved on axially supported by end side support shaft 3 ₄ on one of the gripping frame 2b, the support shaft 3 ₃ on the other gripping frame 2a It consists of a moderation tube through which a fixed moderation rod is inserted. An engagement claw protrudes into the moderation tube, and the engagement claw is urged to rotate in a predetermined direction by a moderation spring and engaged with the engagement teeth. When the gripping frames 2a and 2b are gripped and squeezed, the latch mechanism 2c is disengaged between the engaging claws and the engaging teeth, and the gripping of the gripping frames 2a and 2b is released from this state. The grip frames 2a and 2b are opened most widely. The latch mechanism 2c is already known, and the present invention uses this known mechanism.

Operation handle 2 is coupled to the through hole 6 ₂ of the slide member 6 spindle 3 ₀ to be described later, also, the vicinity portion of the support shaft 3 _0, i.e., the support shaft near the end of each gripping frame 2a, 2b The head member 4 is pivotally supported via 3 ₁ and 3 ₂ . With this configuration, the head member 4 is operated with the rotation of the pair of gripping frames 2a and 2b.

  As shown in FIGS. 2 and 3, the head member 4 includes a pair of crimping dies 12 and 14 for crimping the crimping terminals to the lead wires, and a terminal guide for continuously feeding the terminals to these crimping dies 12 and 14. A member 10 and a head main body 5 to which the crimping dies 12 and 14 and the terminal guide member 10 are mounted. The pair of crimping dies 12 and 14 are a female die 14 and a male die 12 in detail. It is configured. The male die 12 is incorporated in the terminal guide member 10 and attached to the head body 5. Therefore, an assembly in which the male die 12 is incorporated in the terminal guide member 10 is hereinafter referred to as a male die unit 7.

As shown in FIG. 3, the head body 5 includes a head 5A to which the female die 14 is detachably fixed, a body 5C to which the male die unit 7 is detachably fixed, a head 5A and a body. It has a neck portion 5B that connects the parts 5C, a, a predetermined gap G is provided between the jaws 5 _J of the body portion 5C and the head 5A, and integrally formed of steel.
Head 5A is towards the jaws 5 _J from the top 5 _T, a cross section perpendicular to the longitudinal direction of the gap groove 5 ₃ forms a concave shape is formed, the groove width is large female die 14 is inserted It has become. Clearance grooves 5 _3, side walls 5 ₁ a pair of opposing in both _sides, 5 ₂ are erected. A pair of side walls ₅ 1, _{5 2} are through holes _{5 0} passing through the other side wall _{5 2} by passing through the gap grooves _{5 3} from one side wall _{5 1} is formed and the through hole _{5 0,} female Used to fix the die 14.

Barrel 5C is slightly made larger block than the head 5A and neck 5B, the block bulges predetermined length from the neck portion 5B to the jaw 5 _J direction of the head. This is barrel 5C, immediately under holes 5 ₄ the slide member 6 is inserted directly under the gap groove ₃ of the head 5A is formed. This direct-holes 5 ₄ is formed by a concave groove cross section which is provided in the vertical direction of the body portion 5C is made a concave shape, a lid 5D covering the opening portion of the concave groove, the concave groove the lid 5D It is formed by being fixed to the opening of this with a screw or the like.

The slide member 6, as shown in FIG. 4, consists rectangular block immediately below the holes 5 ₄ to slidably fit the size and are formed from steel.
The slide member 6 has a predetermined length, width, and thickness, and has a surface 6a, a back surface 6b, and both side surfaces 6c and 6d, and a pair of guide walls 6c ′ and 6d ′ on both side ends of the surface 6a. Is provided. These guide walls 6c ′ and 6d ′ have a length in which an anvil holder 8 (to be described later) is inserted, and are formed from the top to the bottom of FIG. Side and back 6b excluding surface 6a is contacted with the wall surface of the concave groove when inserting just under the hole 5 _4. A recess is formed in the back wall of the slide member 6 as shown in FIG. Further, the slide member 6, mounting holes ₆₁ for mounting the anvil holder 8 is formed on top. The mounting hole ₆₁ has an opening is formed with a groove _{61 'the} pin is inserted into the wall in a circular shape. The mounting hole ₆₁ of the details will be described later.

  Since the head member 4 having this structure is pivotally supported by the support shafts at the ends of the grip frames 2a and 2b, the head body 5 and the slide member 6 are operated by sandwiching the pair of grip frames 2a and 2b. Thus, the terminal can be crushed between the female die 14 and the male die 12.

As shown in FIG. 3, the female die 14 includes two divided first and second divided female dies 14A and 14B. Each of the divided female dies 14A and 14B has substantially the same shape. It is made of steel. The first and second divided female dies 14A and 14B are elongated plate-like body portions (also referred to as bases) 14a and 14b having predetermined widths, lengths and thicknesses, and these body portions. The first female occlusal teeth 14 _A1 and 14 _B1 provided at one end of the first female occlusion tooth and the second female occlusal teeth 14 _A2 and 14 _B2 provided at the other end are formed of steel. First, second split female die 14A thereof, 14B, respectively of the body portion 14a, the mounting holes ₁₄ 0, 14 ₀ to 14b are formed. The first and second female occlusal teeth 14 _A1 and 14 _B1 and the second female occlusal teeth 14 _A2 and 14 _B2 are each formed by a pair of projecting teeth branched in a substantially Y shape from the body portions 14 a and 14 b. Has been. The first and second female occlusal teeth 14 _A1 , 14 _B1 and 14 _A2 , 14 _B2 are sized to accommodate connection of lead wires of different sizes. That is, the first female occlusal teeth 14 _A1 and 14 _B1 and the second female occlusal teeth 14 _A2 and 14 _B2 have different sizes of leads with different intervals between the pair of protruding teeth branched in a Y shape. It is adapted to the line. The relationship with the lead wire size will be described later.

First, second split female die 14A, the mounting holes ₁₄ 0 14B, 14 _0, the both split female die 14A, the opening of the joint surface of 14B is increased slightly as the stop ring 14C can be pinched formed Has been. The stop ring 14C has a diameter into which the mounting rod 15 is press-fitted. The first and second split female dies 14A and 14B are coupled by a fixing means such as a bolt with a stop ring 14C interposed on the coupling surface. Female die 14 which is assembled, after the mounting hole ₁₄ 0, 14 ₀ is arranged to communicate with the through hole _{5 0} in the gap groove ₅ in ₃ of the head main body 5, the through hole _{5 0} and the mounting hole 14 _0, by inserting the mounting rod 15 to 14 _0, the body 15 _a of the mounting rod 15 is no longer escape is pressed into the stop ring 14C. Therefore, by using the stop ring 14 </ b> C, the female die 14 can be fixed to the head body 5 without connecting a nut or the like to the end of the mounting rod 15. Further, since the mounting rod 15 is easily pulled out when pulled out against the press-fitting holding force of the stop ring 14C, the female die 14 can be removed from the head body 5 without using a special tool.

A plurality of female dies 14 having the above-described configuration are prepared in accordance with the lead wire size. That is, one female die 14 is formed with first and second female occlusal teeth 14 _A1 , 14 _A2 and 14 _B1 , 14 _B2 sized to fit different predetermined ranges of lead wire sizes. The In a lead wire having a lead wire outer diameter of, for example, 1.10 mm or more, the interval between the occlusal teeth of the female die 14 is changed each time the outer skin diameter increases in a predetermined range, for example, 0.10 mm. In this case, the first female die fits the first female occlusal tooth at 1.10 mm and the second female occlusal tooth at 1.20 mm, and the second female die is the first female die. The mold occlusion tooth is formed to fit 1.30 mm, and the second female occlusion tooth is matched to 1.40 mm. The third or more female dies are similarly formed to fit different sizes between the first and second female occlusal teeth. Accordingly, since one female die can be applied to two different sizes, the number of female dies can be reduced, and management and use are simplified.

The male die unit 7 is composed of an assembly of a male die 12 and a terminal guide member 10 that guides feeding of terminals to the male die 12. Male die 12 has a male occlusal tooth to be inserted between the first, second female interlocking teeth ₁₄ A1, _{14 B1} and ₁₄ A2, _{14 B2} female die 14, it is created by steel Yes. That is, the male die 12 has a convex shape as a whole, a substantially rectangular bottom, a trunk extending upward from the bottom, and a single protrusion protruding upward from the trunk through both shoulders. The protrusions 12 _A1 and 12 _B1 are formed on one side wall of the body portion. These protrusions ₁₂ A1, _{12 B1} is engaged with the concave groove _{8 1} of the anvil holder 8. The male die 12 is formed of two divided first and second divided male dies 12A and 12B. In the first and second split male dies 12A and 12B, the second split male die 12B is formed thicker than the first split male die 12A, and the protruding teeth of each split male die 12A and 12B The top shape is different. The thickness and the shape of the top are determined so as to be suitable for each terminal depending on the shape of the crimp terminal.

  The male die 12 is formed with a lead wire size range wider than that of the female die 14. That is, in the female die 14, the tooth width of the male die 12 is set every time the lead wire skin size increases by 0.1 mm, but this male die widens the range, for example, the skin diameter 1 S size is in the range of .10 to 1.40 mm, M size is also in the range of more than 2.56 mm, and L size is in excess of this range and up to 2.83 mm. 3. Up to 30 mm can be handled with 4 male dies with 2L size.

  If the male die 12 can accommodate a wider range of lead wires than the female die 14, it is possible to use several female dies in combination with one male die. In this way, when a plurality of female dies are used in combination for each male die, an incorrect combination may occur when each die is replaced. This error prevention will be described later.

The male die 12 is fixed to the support member 8 together with other components and incorporated into the terminal guide member 10. Since this support member 8 is called an anvil holder in the connector field, this term is used in the following description.
The anvil holder 8 fixes a cutting blade 11 that cuts a connecting beam to which terminals are connected, a pair of male dies 12 and a locator 13 that positions a lead wire, and the like. a table 8 _a, made from one edge of the mounting table 8 _a and the side wall 8 _B erected upward, an integrally molded body of the mounting piece 8 _C hanging down downward from the rear of the mounting table 8 _a, formed by steel Has been. Table 8 _A has a relatively thick wall thickness, a bolt insertion hole penetrating toward the side wall 8 _B surface to the terminal guide member 10 direction (not shown) is formed. Sidewall 8 _B is concave groove 8 ₁ to the mounting table 8 _A side along the surface of the mounting table 8 _A is formed. The concave groove _{8 1,} first, second split male die 12A, the protruding portions _{12 A1, 12} B1, 13 ₁ of 12B and locator 13 is press-fitted. Furthermore, the mounting piece 8 _C is formed the mounting hole ₈₂ is, the mounting hole _82, the opening a circular shape, and groove pin 16c of the mounting rod 16 is inserted is formed on the hole wall face Yes.

As shown in FIG. 3, the terminal guide portion 10 includes a base 9 made of a rectangular parallelepiped block having a predetermined length, width and thickness, a first guide plate 9A fixed to the upper surface of the base 9, The second guide plate 9B is fixed to the upper surface of the first guide plate 9A, and these are made of steel. Of these, the pedestal 9, the gap 9 ₀ anvil holder 8 is fitted into the longitudinal end is formed. The gap 9 _0, each of the side walls 9c, opposed side walls 9c extending from 9d ', 9d' is formed between, has a size table 8 _A of the anvil holder 8 is housed. Further, the bottom wall of the gap 9 _0, screw holes for fixing the anvil holder 8 (not shown) is formed.

The first guide plate 9A has a thickness that allows a terminal to be inserted between the first guide plate 9A and the second guide plate 9B in a state where the second guide plate 9B is mounted. It is formed of a plate-like body having an area slightly smaller than the area. The second guide plate 9B is formed of a plate-like body that is slightly larger than the first guide plate 9A, and is attached to the first guide plate 9A so that a passage is formed between the second guide plate 9B and the first guide plate 9A. A guide piece 9B _' hanging downward from the edge is formed. The first and second guide plates 9A and 9B are attached to the base 9 by stacking the first and second guide plates 9A and 9B on the base 9, and the guide plates 9A from above the second guide plate 9B. , 9B through a screw hole (not shown) and fixed to the pedestal 9.

Mounting of the anvil holder 8 to the pedestal 9, the stage 8 _A of the holder 8, the locator 13, placed, fixed side by side in the order of the male die 12 and the cutting blade 11. Each split male die 12A, 12B and locator 13, respectively of the protrusion _{12 A1, 12} B1, 13 ₁ was pressed into the concave groove _{8 1} of the anvil holder 8, also the cutting blade 11 is compressed into the bottom spring _{S 1} And fix it. Then, the cutting blade 11 in the anvil holder 8, after attaching the male die 12 and locator 13, the table 8 _A of the anvil holder 8 is inserted into the gap 9 ₀ of the base 9, the mounting table 8 of the anvil holder 8 Mounting is performed by inserting a bolt into the screw hole provided in _A and the screw hole provided in the pedestal 9 and fixing them. By this attachment, the male die unit 7 is completed.

The male die unit 7 is detachably fixed to the slide member 6. Hereinafter, this fixing method will be described with reference to FIGS. 4A and 4B illustrate the attachment of the male die unit and the slide member. FIG. 4A is a perspective view before the anvil holder and the slide member are coupled, and FIG. 4B is the coupling of the two members. FIG. 5 is a partial cross-sectional view showing the attachment sequence of FIG. 4A over time (FIG. 5A ′ is a portion indicated by a dotted circle in FIG. 5A). the is a perspective view seen from X ₂ direction, following FIG. 5 (b ') ~ (d ') also have the same). 4 and 5 show the cutting blade 11, the male die 12, the locator 13, and the terminal guide from the male die unit 7 for easy understanding of the description of the coupling between the male die unit 7 and the slide member 6. The member 10 is removed and only the anvil holder 8 is shown.

The mounting rod 16 is composed of a knob head 16a, an insertion barrel portion 16b, and a pin 16c provided by being skewered at the distal end portion of the insertion barrel portion 16b. On the other hand, the mounting hole ₆₁ of the slide member 6 has a circular through-holes sized to the attachment rod 16 is inserted, the ends of the pin 16c is inserted into the opposing face of the mounting hole ₆₁ of the inner wall A groove 61 _' is formed. Further, the outlet of the mounting hole ₆₁ is provided with a recess 6 ₃ back is recessed, locking grooves for stopping the rotation of the pin 16c is formed in the recess 6 _3. Of course, this locking groove is formed at a position different from the groove 61 _' .

Mounting of the anvil holder 8 of the slide member 6 is fitted with a spring S ₂ to the body portion of the mounting rod 16, by inserting the tip into the mounting hole ₈₂ of the anvil holder 8, the mounting hole of the slide member 6 61 is inserted into ₁ (see FIGS. 5A and 5B). The mounting rod after fully inserted, is rotated in the clockwise or counterclockwise direction by pulling the knob head 16 _A by hand, align the pin 16c with the engagement groove (see FIG. 5 (c)). Then, release the hand from the knob head 16 _A. Thus, the mounting rod 16, the pin 16 _C is locked engagement enters the locking groove by the repulsive force of the spring _{S 2} (see FIG. 5 (d)). The removal of the anvil holder 8 reverses the above order. Thus, the head body 5 can be easily attached and detached without using a tool. Accordingly, by preparing female dies and male dies of various sizes, and selecting and exchanging dies that match the lead wire size, for example, at the maintenance site, connection work becomes possible.

However, there is a risk that a wrongly sized die is mounted on the head member during replacement. Therefore, as a method for preventing such an error, the following methods (a) and / or (b) may be employed. Accordingly, the erroneous occlusion prevention method will be described below with reference to FIGS. 6 and 7. 6 is a front view of the head member, and FIG. 7 shows a structure for preventing accidental occlusion between the female die and the anvil holder. FIGS. 7 (a) to 7 (c) are key grooves of the female die. FIG. 7D is a side view showing an example of combination in which the positions of pins of the anvil holder are different, and FIG. 7D is a combination of any of the dies and holders shown in FIGS. 7A to 7C. is a side view seen from _{X 3} direction 7 (c).

(A) Prevention of erroneous occlusion by visual judgment This incorrect occlusion prevention means is configured by attaching identification marks M ₁ and M ₂ to the anvil holder 8 of the female die 14 and the male die unit 7 as shown in FIG. Has been. These identification marks M ₁ and M ₂ are the most frequently spotted immediately after replacement of the female die 14 and the male die unit 7 and during each crimping connection work, for example, the right side of the front shown in FIG. Is preferred. As the identification marks M ₁ and M ₂ , for example, a unit incorporating an S size male die is yellow, an M size unit is green, an L size unit is red, and a 2L size unit is blue. Assume that the same color mark is attached to each female die suitable for the S to 2L size. By applying this mark, it is possible to easily distinguish that the female die and the male die unit are in the wrong combination unless they have the same color. The size classification and the mark color are not limited to those described above.

(B) Prevention of accidental occlusion by a combination of a key groove and a pin Key grooves 14 _{1 to} 14 ₃ , 14 _{1 ′ to} 14 _{3 ′} at both ends of one side of the female die 14, and a spring pin 8 to the inner wall surface of the anvil holder 8 providing a _B1 ~ 8 _B3, respectively. These key grooves 14 _{1 to} 14 ₃ and 14 _{1 ′ to} 14 _{3 ′} are formed at the lower end of the first split female die 14A (see FIG. 7A) and the lower end of the second split female die 14B. Part (see FIG. 7 (b)), or a joint part (see FIG. 7 (c)) of both split female dies 14A and 14B. The anvil holder 8 is provided with spring pins 8 _B1 to 8 _B3 corresponding to the positions of the key grooves 14 _{1 to} 14 ₃ and 14 _{1 ′ to} 14 _{3 ′} .

By providing key grooves 14 ₁ , 14 _{1 ′} or 14 ₂ , 14 _{2 ′} or 14 ₃ , 14 _{3 ′} on the side surface of the female die 14, and providing spring pins 8 _B1 to 8 _B3 on the side surface of the anvil holder 8, When the crimping die attached to the head body 5 is suitable, as shown in FIG. 7D, the spring pins _8B1 to _8B3 and the key grooves 14 ₁ , 14 _{1 ′} or 14 ₂ , 14 _{2 ′} or 14 ₃ , 14 _{3 ′} are fitted, and normal connection can be confirmed. If a wrongly sized crimping die is attached to the head body 5, the spring pins _8B1 to _8B3 and the key grooves 14 ₁ , 14 _{1 ′} or 14 ₂ , 14 _{2 ′} or 14 ₃ , 14 _{3 ′} Are not fitted, and the operation handle 2 stops midway. If the operation handle 2 stops halfway, it can be released by quickly loosening the grip of the operation handle 2, pulling out the mounting rod 15 of the female die 14, and pulling out the female die 14 upward.

  The manual crimping tool 1 and the replacement crimping die are configured as described above. However, if the crimping tool and the crimping die are dispersed individually, it is difficult to store and manage and the tool box is inconvenient to carry. It is stored in and stored. 8 shows a tool box, FIG. 8 (a) is a plan view of the main body case (with the lid removed), and FIG. 8 (b) shows the lid on the main body case of FIG. 8 (a). It is sectional drawing cut | disconnected by the BB line in the mounted state. The tool box 17 includes a main body case 17A that houses the manual crimping tool 1 and a replacement crimping die, and a lid case 17B that covers the opening of the main body case 17A, and a grip portion is formed on one side of both cases. It has a configuration.

Body case 17A is relatively bottom consists deep bottomed rectangular box body, the frame member 17A ₀ for accommodating the tool and replace crimping die and the like are housed in the box body. The one side of the body case 17A, the projecting portion 17a side wall thereof is protruded hole 17 ₀ As is possession is formed. The frame member 17A _0, a plurality of partition holes 18 to 21 provided for accommodating the crimping tool or the like, these holes has a shape which the tool and replace crimping die is housed. Among these cell opening, a hole cell opening 18 is hand operated crimping tool 1, cell opening ₁₉ 1-19 ₅ male die unit 7, cell opening ₂₀ 1 _{to 20 10} female die 14 are accommodated respectively ing. In addition, the partition hole 21 accommodates a connecting rail from which the terminal is cut. Providing the partition hole 21 facilitates collection because the crosspieces can be stored without being scattered.

Further, the lid case 17B has substantially the same shape as the body case 17A, and tool housed in the cell opening of the internal frame member, the filling member 17B ₀ exchange crimping die or the like to prevent scattering mounted Yes. Also, one side of the lid case 17B are holes 17 ₀ as the protrusion 17b side wall thereof is protruded is protruded portion 17a similar possession is formed. The main body case 17A and the lid case 17B are joined at the bottom of FIG. 8 by a hinge member 17c.

  By storing the manual crimping tool 1 and the replacement crimping die in the tool box 17, the storage and management of these tools can be simplified and the carrying can be facilitated. Further, since the tool box 17 is provided with the partition hole 21 for accommodating the connecting beam, it is easy to collect the connecting beam.

FIG. 1 is a front view of a manual crimping tool according to an embodiment of the present invention. Figure 2 shows the head member of the manual crimping tool of FIG. 1, see FIG. 2 (a) is a front view of the head member, the head member of Fig. 2 (b) FIGS. 2 (a) from the direction X ₁ FIG. 2C is a sectional view taken along line AA of the head member in FIG. FIG. 3 is an exploded perspective view of the head member of FIG. 4A and 4B illustrate attachment of the male die unit and the slide member. FIG. 4A is a perspective view before the anvil holder and the slide member are combined, and FIG. 4B is a combination of the two members. It is a perspective view of a state. FIG. 5 is a partial cross-sectional view showing the attachment sequence of FIG. FIG. 6 is a front view of the head member. FIG. 7 shows a structure for preventing accidental occlusion between the female die and the anvil holder, and FIGS. 7 (a) to 7 (c) show that the key groove of the female die and the pin of the anvil holder are positioned differently. side view showing a combination example, FIG. 7 (d) combining the one of the die and the holder shown in FIG. 7 (a) ~ FIG 7 (c), for example, as seen from the X ₃ direction shown in FIG. 7 (c) It is a side view. FIG. 8 shows a tool box, FIG. 8 (a) is a plan view of the main body case (with the lid removed), and FIG. 8 (b) is a case where the lid is attached to the main body case of FIG. 8 (a). It is sectional drawing cut | disconnected by the BB line in the state. FIG. 9 is a front view showing a prior art manual crimping tool.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Manual crimping tool 2 Operation handle 3 _{0-3 4} Support axis 4 Head member 5 Head main body 6 Slide member 7 Male die unit 8 Albir holder (support member)
10 Terminal guide member 12 Male die (crimping die)
13 Locator 14 Female die (crimping die)
14C Stop ring (Press contact ring)
15 Mounting rod 16 Mounting rod

Claims (7)

A head member to which a pair of crimping dies having meshing teeth meshing with each other is mounted; and an operation handle having a pair of gripping frames whose one end is pivotally supported by a support shaft and the other end is freely opened and closed. In the manual crimping tool for crushing and crimping the terminal into which the lead wire is inserted with the head member by operating the handle,
The pair of crimping dies are coupled to the head member by a detachable fixing means, and are composed of a female die having a female occlusion tooth and a male die having a male occlusion tooth meshing with the female occlusion tooth,
The head member includes a head body in which a gap groove for coupling the female die is formed with a pair of side walls having through holes facing each other, and a slidably mounted on the head body. The head body is connected to a pair of grip frames of the operation handle, and the slide member is connected to the handle by a support shaft.
The female die is composed of two divided first and second divided female dies, and the first and second divided female dies have a predetermined width length, length, and thickness, A base of an elongated plate-like body in which mounting holes are formed, and occlusal teeth of different sizes are provided at opposing ends of the base, and a pressure contact ring is interposed on the connecting surface of each mounting hole Is disposed in the gap groove of the head body,
The fixing means between the head main body and the female die includes the through hole provided in the head main body, the pressure contact ring attached to the attachment hole provided in the base of the female die, and the attachment hole. And a manual crimping tool comprising a mounting rod that is inserted into the through hole and press-fitted into the press-contact ring .   2. The terminal according to claim 1, wherein a terminal guide member that continuously feeds a plurality of terminals is attached to the head member, and the terminals are fed from the terminal guide member to the crimping die. Manual crimping tool. A male die unit is formed by fixing the male die to a support member and incorporating it into the terminal guide member, and the support member of the male die unit is coupled to the slide member by a detachable fixing means. The manual crimping tool according to claim 2 . It said securing means includes a mounting hole provided in the support member, a mounting hole provided in the slide member, and a mounting rod having a stop means for stopping is made omission by rotating and inserted into these mounting hole The manual crimping tool according to claim 3 , comprising: Between the female die fixed to the head body and the male die unit, there is provided an erroneous occlusion prevention means for preventing erroneous engagement between the female die and the male die. The manual crimping tool according to any one of claims 1 to 4 , wherein the manual crimping tool is provided. The erroneous occlusion prevention means includes an identification mark attached to a support member of the female die and the male die unit, and when the female die and the male die unit are attached to the head body, The manual crimping tool according to claim 5 , wherein the identification mark can be collated. The erroneous occlusion prevention means is composed of a key groove provided in one of the female die and the support member, and a small pin inserted into the key groove provided in the other. The manual crimping tool according to claim 5 .

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