JPH0594955U - Electric wire connector - Google Patents

Abstract

(57) [Summary] [Purpose] To firmly connect multiple wires by pressing them firmly. In addition, the more force is applied in the wire separation direction,
Increase the connection strength. In addition, the structure is simplified,
Simplify the assembly work in unstable places such as high places,
Enables safe work. [Arrangement] On both side walls 4 of a U-shaped holder 1, arcuate engagement grooves 7 are recessed from the upper end. In addition, the pressing body 1 is provided between both side walls 4.
1 is slidably inserted, and a rotating cam 13 is rotatably fitted into a mounting opening 12 on the side surface of the pressing body 11. Rotating cam 1
Engaging shafts 8 eccentrically protruding from both sides of 3 are inserted into and engaging with engaging grooves 7 to pivotally support rotation cam 13 and pressing body 11 between both side walls 4 and are located between both side walls 4. The plurality of electric wires 2 and 3 are pressed. Further, the fitting body 17 is fitted on the outer circumference of the both side walls 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric wire connector for connecting a plurality of electric wires.

[0002]

[Prior Art]

 Conventionally, a device described in Japanese Utility Model Laid-Open No. 2-80966 is known as an electric wire connecting device for connecting a plurality of electric wires. In this conventional method, a holding body capable of holding a plurality of electric wires is formed, and a pressing body is rotatably supported between both side walls of the holding body so that the pressing surface of the pressing body presses the electric wires. , Was trying to connect the wires.

However, in this conventional method, the pressing movement amount of the pressing body after contacting the electric wire is small, the pressing force on the electric wire by the pressing body is small, and there is a possibility that the electric wire may be disconnected due to poor connection. Was.

In addition, the invention disclosed in Japanese Utility Model Application Laid-Open No. 2-134659 is known to solve the above-mentioned drawbacks. In this method, a rotating cam is rotatably fitted on the inner circumference of the pressing body to increase the pressing force of the pressing body on the electric wire to connect the electric wires.

However, in this conventional method, when the pressing body is incorporated between the both side walls, it is necessary to insert and engage the engaging shaft into the through hole of the rotating cam through the engaging hole penetrating the both side walls. there were. As a result, it was a small work, and it was troublesome and difficult to work at high places in unstable places such as on utility poles.

[0006]

[Problems to be solved by the device]

 The present invention is intended to solve the above-mentioned problems, and the connector has a large pressing force on the electric wire, and enables reliable connection. In addition, the structure is simple, and it does not take time and effort to assemble, and it aims to enable safe work even in unstable places such as utility poles and high places.

[0007]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention forms a holding body by connecting both side walls provided at intervals capable of inserting and holding a plurality of electric wires with a connecting wall, and forming an arc shape from the upper end on the both side walls of the holding body. The recess is provided with the engaging groove and the pressing body is slidably inserted between both side walls, and the pressing surface for the electric wire of the pressing body is provided on the connecting wall side and the mounting port opened on the side surface of the pressing body. A rotary cam is rotatably fitted to the rotary cam, and engaging shafts are provided on both sides of the rotary cam so as to be eccentric from the shaft center, and the engaging shafts are inserted and engaged in arc-shaped engaging grooves. , The pivoting cam is pivotally supported between both side walls and the pressing body is pivotally supported between both side walls via the pivoting cam to prevent the holding body from expanding when the electric wire is pressed by the pressing body. The fitting body is covered and fitted on the outer circumference of both side walls.

Further, the connecting wall may have an uneven biting protrusion formed on the inner surface.

Further, the pressing surface may be formed with an uneven biting protrusion.

Further, the pressing body may be provided with a locking projection so as to face the inner surface of the fitting body in the tightening movement direction.

[0011]

[Action]

 Since the present invention is configured as described above, in order to connect the electric wires, first, a plurality of electric wires are stacked and inserted between the both side walls of the holding body. Then, the engaging shafts projecting to both sides of the rotating cam of the pressing body are inserted into the arc-shaped engaging grooves provided in the upper ends of the both side walls.

The engaging shaft is positioned eccentrically from the axis of the rotating cam, and the rotating cam is rotated in the mounting opening of the pressing body, so that the axis of the rotating cam serves as a fulcrum in the circumferential direction. It is movable. Further, the engaging shaft is positioned on the pressing surface side with respect to the shaft center of the rotating cam when being inserted into the engaging groove, and the wide portion located in the shaft center direction from the engaging shaft is moved away from the pressing surface. It is desirable to position it.

With this configuration, the engagement shaft inserted into the engagement groove is easily positioned near the tip of the engagement groove, and the wide portion is moved in the pressing surface direction as the rotary cam rotates. However, tightening of the pressing surface to the wire can be strengthened.

In contrast to the above, when the engaging shaft is located further from the pressing surface than the axis of the rotating cam, the wide portion is located close to the pressing surface, and the engaging shaft is It cannot move near the tip of the engaging groove. That is, when the engaging shaft is inserted into the engaging groove, the pressing surface of the pressing body comes into contact with the electric wire immediately, and the engaging shaft becomes immovable before reaching the vicinity of the tip of the engaging groove.

Next, the pressing body located between the both side walls is pressed in the electric wire direction. By this pressing, the rotating cam located in the mounting opening of the pressing body also tries to move in the wire direction, but since the engaging shaft is inserted in the engaging groove, it may move directly in the wire direction. Can not. Therefore, the rotating cam rotates within the mounting opening with the engaging shaft as a fulcrum, and the pressing body contacts the pressing surface with the electric wire.

Then, the pressing body is struck and pressed by a hammer or the like from the side of the portion protruding from both side walls. By this pressing, the pressing body moves in the pressing direction with the pressing surface in contact with the electric wire. Also, as the pressing body moves, the rotating cam in the mounting opening also moves at the same time.However, since the engaging shaft is inserted in the arc-shaped engagement groove, the engagement shaft is located beyond the arc-shaped engagement groove. Move to the edge.

Therefore, the rotation cam further rotates in the mounting opening with the engagement shaft as a fulcrum, is positioned in the direction in which the engagement shaft moves away from the pressing surface, and moves the wide portion toward the pressing surface side, and the pressing body is With the action of the lever, the electric wire is strongly pressed with a larger force.

Next, the outer circumferences of both side walls, which are located in the middle of the pressing body, are covered and fitted with a fitting body. By this covering fitting, the holding body can prevent the both side walls from expanding, and the electric wire can be firmly fixed. In addition, if the pressing body is designed so that the lengthwise dimension of the pressing body fits within the holding body at a position where the electric wire can be pressed reliably, if the pressing force of the electric wire is insufficient, or foreign matter, etc. In the case of being entangled in, the pressing body projects to the outside of the holding body. Therefore, the holding body cannot be covered with the fitting body, and the worker can prevent poor connection of the wires.

Further, when a force in the extracting direction acts on the electric wire, a force in the extracting direction also acts on the pressing body that presses the electric wire. Therefore, the rotating cam also tries to move in the extraction direction together with the pressing body.However, since the rotation cam pivotally supports the engagement shaft in the engagement groove, the movement of the wire in the extraction direction is changed in the rotation direction. The movement is converted to the movement, the wide part is moved to the electric wire side, and the pressing surface of the pressing body is further pressed in the electric wire direction.

As described above, in the connecting device, even if the fixed electric wire is to be pulled out, the pressing body strongly presses the electric wire in proportion to the force in the pulling-out direction of the electric wire, so that the reliable connection can be achieved. Moreover, since the structure is simple, it can be manufactured at low cost. In addition, even in an unstable place such as on a utility pole, the assembly work does not take time and it is possible for the worker to work at high altitude safely.

Further, if the concave and convex biting projections are formed on the inner surface of the connecting wall and the pressing surface of the pressing body, the electric wire may be bitten by the protruding projections, and the electric wire may slip on the pressing body and the connecting wall. There is no

If the pressing body is provided with a locking projection that engages with the inner surface of the fitting body at the end in the tightening movement direction, the pressing body will move too much in the tightening direction, and Prevents disconnection due to over-tightening of the wire. That is, even when a strong force is applied to the electric wire in the pulling direction, the locking projection of the pressing body hits the inside of the fitting body and stops the movement. It is possible to prevent accidents such as disconnection.

[0023]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. (1) is a holding body, and both side walls (4) are arranged at intervals such that a plurality of electric wires (2) and (3) formed by wires can be inserted and held. Is provided, and both side walls (4) are connected by an arc-shaped connecting wall (5). Further, the connecting wall (5) is provided with an uneven biting protrusion (6) on its inner surface to prevent the electric wire (2) from slipping.

Further, the holding body (1) is provided with an arcuate engagement groove (7) recessed from the upper edges of both side walls (4). The engagement groove (7) allows the engagement shaft (8) described later to be inserted up to the tip, and the tip portion (10) is displaced slightly upward. By doing so, it is possible to prevent the engaging shaft (8) from being accidentally disengaged.

Further, the holding body (1) is configured such that the pressing body (11) can be slidably inserted between the both side walls (4). The pressing body (11) has a circular mounting opening (12) opened in the thickness direction, and a rotary cam (13) is rotatably fitted in the mounting opening (12).

The rotating cam (13) projects the engaging shaft (8) on both sides at a position eccentric from the shaft center. Further, the engagement shaft (8) is formed in a state in which the through hole (14) is formed in the rotating cam (13) so as to be eccentric from the shaft center, and the engagement shaft (8) is inserted into the through hole (14). Then, the outer periphery of the through hole (14) is pressed by a press or the like, and the inner surface of the through hole (14) is curved inward to fix the engagement shaft (8). Further, the engagement shaft (8) may be molded and projected integrally with the rotating cam (13).

Further, the pressing body (11) is provided with a pressing surface (15) for the electric wire (3) on the connecting wall (5) side, and the pressing surface (15) conforms to the shape of the electric wire (3). Are recessed in an arc shape. Further, a biting protrusion (16) is provided on the surface of the pressing surface (15) to prevent the electric wire (3) from slipping.

Further, in the pressing body (11), the molding portion on the pressing surface (15) side provided with the pressing surface (15) is formed separately from the molding portion on the mounting opening (12) side, After forming each of them, the forming portion on the pressing surface (15) side and the forming portion on the mounting opening (12) side are fixedly engaged by caulking with the caulking portion (19). When formed in this way, the pressing body (11) can be manufactured at a low cost, with less effort required for forming work and adjusting work, as compared with the case where it is integrally formed from a solid material.

Further, when the pressing body (11) presses the electric wires (2) and (3), the holding body (1) can cover the outer periphery of both side walls (4) with the fitting body (17). .. The fitting body (17) is formed in a box shape having a U-shaped cross section so that it can be mounted and fixed to the outer periphery of both side walls (4).

Further, the pressing body (11) has a dimension in the lengthwise direction that can be accommodated in the holding body (1) at a position where the electric wires (2) and (3) can be reliably pressed. If formed in this way, the pressing body (11) will not be pressed on both sides when the pressing force of the electric wires (2) and (3) is insufficient, or when foreign matter or the like is entangled in the electric wires (2) and (3). It projects outside the wall (4). Therefore, the holding body (1) cannot be covered with the fitting body (17), and the worker can prevent poor connection of the electric wires (2) and (3).

Further, the pressing body (11) has a locking projection (18) protrudingly fixed to the end of the arc-shaped engagement groove (7) in the direction in which the tip is located. This locking projection (18) allows the locking projection (18) of the pressing body (11) to be engaged with the fitting body (17) even when a strong tensile force acts on the electric wires (2) and (3). Since it hits the inside of the wire and stops the movement, the wires (2) and (3) are not overtightened by the pressing body (11), and accidents such as cutting of the wires (2) and (3) can be prevented.

In order to connect the electric wires (2) and (3) in the structure as described above, first, as shown in FIG. 2, between the both side walls (4) of the holding body (1). Insert the wires (2) and (3) on top of each other. In this case, the tip of one electric wire (2) located on the side of the connecting wall (5) is in the same direction as the tip direction of the arcuate engagement groove (7). The other electric wire (3) placed on the one electric wire (2) has its tip positioned in a direction different from the tip of the one electric wire (2). Further, the tips of both electric wires (2) and (3) are projected from both side walls (4) with appropriate dimensions.

As shown in FIG. 3, the pressing body (11) is inserted between the both side walls (4) and the engaging shaft of the rotary cam (13) mounted on the pressing body (11) is inserted. Insert (8) into the engaging groove (7) of both side walls (4). In this case, it is desirable that the engaging shaft (8) of the rotating cam (13) is located on the pressing surface (15) side and the tip end (10) side of the shaft center.

In this way, the engagement shaft (8) inserted into the engagement groove (7) is easily located near the tip end (10) of the engagement groove (7) and, in FIG. As the rotating cam (13) rotates clockwise, the wide part (20) moves toward the pressing surface (15), and the pressing surface (15) tightens the wire (2) (3). Can be made stronger.

On the contrary, when the engaging shaft (8) is located farther from the pressing surface (15) than the axis of the rotating cam (13), the wide portion (20) is pressed against the pressing surface (15). Since it is located close to (15), the engaging shaft (8) cannot move near the tip (10) of the engaging groove (7). That is, when the engaging shaft (8) is inserted into the engaging groove (7), the pressing surface (15) of the pressing body (11) and the electric wire (3) are immediately contacted, and the engaging shaft (8) is engaged. Before reaching the vicinity of the tip (10) of the groove (7), it becomes immovable.

Next, the pressing body (11) located between both side walls (4) is pressed in the direction of the electric wires (2) (3) as shown in FIG. Since the pressing body (11) is slidably positioned between both side walls (4), this pressing can be easily performed by manual pressing or the like.

Further, due to this pressing, the rotating cam (13) in the mounting opening (12) of the pressing body (11) also tries to move in the direction of the electric wires (2) (3), but the engagement shaft (8) Since it is inserted in the engaging groove (7), it cannot be moved directly in the direction of the electric wires (2) (3).

Therefore, the rotation cam (13) rotates within the mounting opening (12) with the engagement shaft (8) as a fulcrum. In this rotation, the wide portion (20) of the rotating cam (13) moves in the direction of the electric wires (2) and (3), and the wide portion (20) moves the pressing body (11) to the electric wires (2) and (3). Since the pressing body (11) presses in the direction, the pressing surface (15) contacts the electric wires (2) and (3). Further, at this point, the pressing body (11) projects from both side walls (4) at one end in the direction in which the wide portion (20) is located.

Then, the protruding portion of the pressing body (11) is struck and pressed by a hammer or the like in a direction to be housed between the side walls (4). By this pressing, the pressing body (11) moves in the pressing direction with the pressing surface (15) in contact with the electric wire (3). Further, as the pressing body (11) moves, the rotating cam (13) in the mounting opening (12) also moves at the same time. However, since the rotation cam (13) inserts the engagement shaft (8) into the arc-shaped engagement groove (7), the engagement shaft (8) is located outside the arc-shaped engagement groove (7). Move to the tip (10) along the rim (21).

Therefore, the rotation cam (13) holds the engagement shaft (8) at the tip portion (10) of the engagement groove (7), and further uses the engagement shaft (8) as a fulcrum to further attach the mounting opening (12). ) Rotate in. At this time, as shown in FIG. 4, the rotating cam (13) positions the engaging shaft (8) in a direction away from the pressing surface (15) and the wide portion (20) on the pressing surface (15) side. Then, the pressing body (11) strongly presses the electric wires (2) and (3) with a large force by the action of the lever.

Further, since the concave and convex protrusions (6) and (16) are formed on the pressing surface (15) of the pressing body (11) and the inner surface of the connecting wall (5), the pressing body (11) ), The biting protrusions (6) (16) can bite into the wires (2) and (3), and a strong pulling force is applied to the wires (2) and (3). However, the electric wires (2) and (3) are less likely to cause slippage with the pressing body (11) and the connecting wall (5).

Next, both side walls (4) of the pressing body (11) were inserted into the openings of the fitting body (17) as shown in FIG. 5, and the fitting body (17) was firmly fixed with a hammer or the like. After that, the fitting body (17) is covered and fitted on the outer peripheries of both side walls (4). By this cover fitting by the fitting body (17), the holding body (1) can prevent the expansion of the both side walls (4) even when an external force is applied, and the electric wires (2) (3) can be made firm. Fixation will be possible.

Further, when a force in the extracting direction acts on the electric wires (2) and (3), the force in the extracting direction also acts on the pressing body (11) that presses the electric wires (2) and (3) at the same time. To do. Therefore, the rotating cam (13) also tries to move in the extraction direction together with the pressing body (11), but the rotating cam (13) pivotally supports the engaging shaft (8) in the engaging groove (7). Therefore, the movement of the electric wires (2) and (3) in the pull-out direction is converted into the movement in the rotation direction, and the wide portion (20) is moved to the electric wires (2) and (3) side to move the pressing body (11). The pressing surface (15) of () is further pressed toward the electric wires (2) and (3).

[0044]

[Effect of the device]

 Since the present invention is configured as described above, when connecting electric wires, even in an unstable place such as on a utility pole, the assembly work does not take time, and a safe work for an aerial worker is possible. It will be possible.

Further, even if the fixed electric wire is pulled out, the pressing body strongly presses the electric wire in proportion to the force in the pulling-out direction of the electric wire, and the reliable connection is possible. Also, since the structure is simple, it can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is an exploded perspective view

FIG. 2 is a partial cross-sectional view showing a state before the engagement shaft is inserted into the engagement groove.

FIG. 3 is a partial cross-sectional view showing a state in which an engagement shaft is inserted in an engagement groove.

FIG. 4 is a partial cross-sectional view showing a state where an engagement shaft is inserted into a tip end portion of an engagement groove.

FIG. 5 is a partial cross-sectional view showing a state in which the fitting body is attached to the holding body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 holding body 2 electric wire 3 electric wire 4 both side walls 5 connecting wall 6 biting protrusion 7 engaging groove 8 engaging shaft 11 pressing body 12 mounting opening 13 rotating cam 15 pressing surface 16 biting protrusion 17 fitting body 18 locking protrusion

Claims (4)

[Scope of utility model registration request] 1. A holding body is formed by connecting both side walls provided at intervals so that a plurality of electric wires can be inserted and held by a connecting wall, and an arc-shaped engaging groove is recessed from the upper end on both side walls of the holding body. In addition, a pressing body is slidably inserted between both side walls, the pressing surface for the electric wire of the pressing body is provided on the connecting wall side, and the rotating cam is rotatable in the mounting opening opened on the side surface of the pressing body. Mated to
Engagement shafts are provided so as to be eccentric from the shaft center on both sides of the rotation cam, and the engagement shafts are inserted into and engaged with the arc-shaped engagement grooves to pivotally support the rotation cam between both side walls and rotate the rotation cam. A pressing body is axially supported between both side walls via a moving cam, and a fitting body that prevents the holding body from expanding when the pressing body presses the electric wire is covered and fitted on the outer periphery of both side walls. An electric wire connector. 2. The electric wire connecting device according to claim 1, wherein the connecting wall has an uneven biting protrusion formed on an inner surface thereof. 3. The wire connector according to claim 1, wherein the pressing surface is formed with an uneven biting protrusion. 4. The wire connector according to claim 1, wherein the pressing body is provided with a locking projection so as to face the inner surface of the fitting body in the tightening movement direction.