JP6614077B2 - Restraint band - Google Patents

Description

  The present invention relates to a restraining band including a band portion and a locking portion.

  In vehicles such as electric vehicles and hybrid vehicles, an electric motor for driving the vehicle is mounted. Further, depending on the vehicle, a generator is mounted on the vehicle. One end of a plurality of power lines is connected to the rotating electric machine that is such an electric motor or generator, and the other end of these power lines is connected to a plurality of terminals of the inverter. For this purpose, an electric cable formed by bundling power lines is used.

  In some cases, a cable terminal with a boot is formed by attaching a connector integrally to the end of the electric cable and providing a boot so as to cover the ends of the connector and the electric cable. And in order to prevent that the position shift of a boot arises with respect to a connector, it is possible to restrain a boot as a restrained member from the outside using a binding band as a restraint band. In such a cable terminal with boots, there are cases where an operator grips the outer peripheral portion of the cable terminal with boots by hand in order to connect to an electrical device such as an inverter or a rotating electric machine.

  Patent Document 1 and Patent Document 2 include a band part wound around a wire harness, a locking part connected to one end of the band part, and a band insertion hole provided so as to penetrate the locking part. The binding band provided is described. Among these, in the configuration described in Patent Document 1, when the other end side of the band part is inserted into the band insertion hole, the lock arm part formed in the band insertion hole is deformed so as to be tilted by the band part. The locking recess of the band portion is locked to the locking claw formed on the lock arm portion.

  Moreover, in the structure described in patent document 2, an engaging claw and an elastic piece protrude inside a latching | locking part, and an engagement claw and an elastic piece protrude from both sides inside a main-body part. Separated by. When the other end side of the band part is inserted into the band insertion hole, the two guide pieces separate the band part from the engagement claw in the band insertion hole. If a certain force or more is applied to the guide piece when the wire harness is bundled, the guide piece is deformed and the engaging claw is engaged with the engaging groove of the band portion.

JP 2011-94771 A JP-A-11-79232

  In the binding band described in Patent Document 1 and Patent Document 2, in the state where the other end side of the band part is inserted into the band insertion hole of the locking part, the band part has an obstruction protruding from the outlet of the band insertion hole. It is necessary to cut the surplus part. Thereby, there exists a possibility that the cutting part of a band part may be in the state still protruding outside from the latching | locking part. When the operator grips the configuration in which the outer periphery of the cable terminal with boots is restrained using such a binding band, the operator needs to hold it by hand so as to avoid the cutting part. Workability of work performed by grasping the terminal deteriorates.

  The object of the present invention is to improve the workability of the work performed by grasping the restrained member in the restraint band.

  The restraint band according to the present invention is a long and flexible band portion, a band insertion hole formed at one end in the longitudinal direction of the band portion and passing through the other end side of the band portion, and the band insertion A locking claw formed inside the hole, the locking claw having a locking recess formed in the band part and a locking part having a locking claw, and wound around the outer periphery of the restrained member A restraint band that restrains the restrained member by the catching claw being latched in the catch recess of the band portion in a state where the band portion is inserted into the band insertion hole, On the outlet side of the insertion hole, an inner wall portion that rises in a direction to block the band insertion hole from the side surface on the same side as the locking claw, and forms a bending recess with the locking claw, and the band insertion In the hole, the side from the side opposite to the locking claw A lever portion that is elastically deflectable and extends toward the concave portion for bending, and the band portion is inserted into the band insertion hole, and protrudes from the outlet of the band insertion hole in the band portion. When the surplus portion is cut, the cut end portion of the band portion is configured to be pressed by the lever portion so as to enter the bending concave portion.

  According to the restraint band concerning the present invention, when a surplus portion of a band part is cut, it can control that a cutting part protrudes from a locking part. Thereby, when an operator grasps the restrained member restrained by the restraining band by hand from the outside, it is possible to eliminate or reduce the need to avoid the cutting portion. For this reason, since the freedom degree of the holding part of a to-be-restricted member improves, the workability | operativity of the operation | work performed by holding a to-be-restricted member can be aimed at.

It is a figure which shows the cable terminal with a boot restrained with the binding band of the comparative example. (A) is a figure which shows the latching | locking part of the binding band of a comparative example, (b) is a figure which shows the state which penetrated the band part to the latching | locking part of (a), (c) is (b) It is a figure which shows the state which cut | disconnected the excess part of the band part from the state of). In the binding band of a comparative example, it is an expanded sectional view of the A section of Drawing 2 (b). It is a figure which shows the state which the operator grasped the cable terminal with a boot of FIG. It is sectional drawing which shows the latching | locking part in the restraint band of embodiment which concerns on this invention. In embodiment, it is sectional drawing corresponding to FIG. 5 which has shown the state which penetrated the band part to the latching | locking part and was pulled to the exit side. In embodiment, it is sectional drawing which shows the state which cut | disconnected the excess part from the state of FIG.

  In the following, embodiments of the restraint band according to the present invention will be described in detail. Before describing the configuration of the present invention, first, inconveniences when the binding band of the comparative example is used will be described.

  FIG. 1 is a view showing a cable terminal 10 with a boot restrained by a binding band 30 of a comparative example. FIG. 2A is a view showing the locking portion 34 of the binding band 30 of the comparative example, and FIG. 2B shows a state where the band portion 32 is inserted into the locking portion 34 of FIG. 2A. FIG. 2C is a diagram showing a state in which the surplus portion of the band portion 32 is cut from the state of FIG. FIG. 3 is an enlarged cross-sectional view of a portion A in FIG. 2B in the binding band 30 of the comparative example.

  In the comparative example shown in FIG. 1, the outer periphery of the boot 18 of the cable terminal 10 with a boot as a restrained member (FIG. 1) is restrained by a binding band 30. The cable terminal 10 with boot is formed by attaching a connector 14 integrally to the terminal of the electric cable main body 12 and providing a boot 18 so as to cover the ends of the connector 14 and the electric cable main body 12. The cable terminal 10 with boots is a cable terminal. The cable is used to connect a plurality of electric devices (not shown) such as a rotating electric machine and an inverter.

  The electric cable main body 12 is formed, for example, by bundling three electric wires for connection to a three-phase power line of a rotating electrical machine and covering the outside with a cylindrical shield portion. The cable body may be a bundle of wires other than three. The shield part is formed by, for example, a braided wire, and suppresses the diffusion of electromagnetic noise based on the current flowing through the electric wire to the outside. The electric cable main body 12 is good also as a structure which put together what covered each of the some electric wire with the shield part with the restraint band. A tube 22 such as a corrugated tube is provided outside the middle portion in the longitudinal direction of the electric cable body 12 so as to cover the periphery.

  The connector 14 includes a housing part 15 that is detachably coupled around one end of three electric wires of the electric cable main body 12, and an attachment part 16 that is fixed to the housing part 15. The housing portion 15 is formed by joining three metal terminal portions 17 to the resin portion 15a. The terminal part 17 is electrically connected to an electric wire insertion part (not shown) through a metal part (not shown) inside the resin part 15a. One end of the electric wire is inserted into each electric wire insertion portion and electrically connected. For example, a power line of a rotating electrical machine can be connected to each terminal portion 17.

  The attachment portion 16 of the connector 14 has holes 16a and is fixed to a motor case (not shown) by a fastening member (not shown) such as a bolt inserted into each hole 16a. The other end of the electric cable body 12 can be connected to, for example, a three-phase terminal of an inverter (not shown). In the cable terminal 10 with boots, since the connector 14 is provided integrally with the electric cable body 12, the assemblability can be improved. In addition, when providing a connector in the longitudinal direction other end part of the electric wire cable main body 12, the attaching part provided in the connector is couple | bonded and fixed to the inverter case which accommodates an inverter.

  The boot 18 is formed in a cylindrical shape by rubber and is continuously formed so as to be bent from the other end of the large-diameter cylindrical portion 18a on the other end side, and the large-diameter cylindrical portion 18a. And a small-diameter cylindrical portion 18b having a smaller diameter. The small-diameter cylindrical portion 18b is attached so as to cover the outside of one end portion in the longitudinal direction of the tube 22 (the upper end portion in FIG. 1), and the large-diameter cylindrical portion 18a is provided at the end portion on the opposite side of the terminal portion 17 of the connector 14. It is attached to cover the outer periphery. Such boots 18 are used to improve environmental performance such as waterproofing and dustproofing. In addition, as a boot, what does not have a function of one or both of complete waterproofing and dustproofing can also be used. For example, the boot may be provided for appearance. Further, the boot is not limited to the bent configuration as shown in FIG. 1. For example, the boot may have a shape that extends straight in the axial direction or a bottle shape. For example, the boot may have a configuration in which the small-diameter cylindrical portion is connected via a tapered portion so that the central axis coincides with the large-diameter cylindrical portion 18a.

  A binding band 30 is attached to the outside of the boot 18 to prevent the boot from being displaced. The binding band 30 is integrally formed of a resin material, and includes a band portion 32 and a locking portion 34 connected to one end in the longitudinal direction of the band portion 32. The band part 32 is a long and flexible band shape. The band part 32 is made flexible by reducing the thickness. A plurality of locking recesses 33 (FIG. 3) are formed on one side surface of the band portion 32 in the thickness direction. Each locking recess 33 is formed in a triangular cross-section with a deeper depth on the other end side in the longitudinal direction of the band portion 32 (left end side in FIG. 3).

  The locking part 34 has a rectangular cross section or an oval cylindrical shape, and has a band insertion hole 35 and a locking claw 36. The band insertion hole 35 has a rectangular cross section or an oval shape, and is formed so as to penetrate the locking portion 34. As shown in FIG. 2B, the other end side of the band portion 32 is inserted into the band insertion hole 35, and an annular portion 32 a is formed by an uninserted portion of the band portion 32 to the band insertion hole 35. The band portion 32 is connected to one end portion (the right end portion in FIGS. 2 and 3) of the outer surface of the locking portion 34.

  As shown in FIG. 3, an outlet 35a is formed at one end (left end in FIG. 3) of the band portion 32 in the band insertion hole 35, and an inlet 35b is formed at the other end (right end in FIG. 3) in the insertion direction. It is formed. The locking claw 36 is formed at an intermediate portion in the insertion direction of the inner side surface of the band insertion hole 35 on the side opposite to the connecting portion P (FIG. 3) with the band portion 32. The locking claw 36 is inclined so that its tip faces the outlet 35 a of the band insertion hole 35.

  When the boot 18 of the cable terminal 10 with boot (FIG. 1) is restrained from the outside by the binding band 30, the other end in the longitudinal direction of the band portion 32 wound around the outer periphery of the boot 18 is inserted into the band insertion hole 35. State. At this time, the locking claw 36 of the locking portion 34 is locked to one locking recess 33 of the band portion 32. In this state, since the locking claw 36 is inclined so that the tip of the locking claw 36 faces the outlet 35a, the band portion 32, which is the inclination direction of the locking claw 36, goes out of the outlet 35a. The movement of the band portion 32 is not prevented by the locking claw 36. On the other hand, the locking claw 36 becomes a resistance against the movement of the band portion 32 in the direction opposite to the inclination direction of the locking claw 36 and the band portion 32 being pulled back from the inlet 35b. As a result, the band portion 32 is prevented from coming off from the inside of the locking portion 34.

  The binding band 30 of the above comparative example is wound around the outer peripheral portion of the boot 18 of the cable terminal 10 with boot, and the band portion 32 is passed through the band insertion hole 35 to restrain the boot 18, and then the band is extended from the locking portion 34. The other end side in the longitudinal direction of the part may protrude greatly. At this time, an operator cuts the part which protruded from the latching | locking part 34 among the longitudinal direction other end sides of the band part 32 with cutting tools (not shown), such as a nipper. In this case, as shown in FIG. 2C, the cut portion 32b protrudes from the outlet side end portion (left end portion of FIG. 2C) of the locking portion 34, for example, by a few millimeters. There is a case.

  In the cable terminal 10 with boots, in order to connect to an electrical device (not shown) such as a rotating electrical machine, the worker 50 may grasp the outer periphery of the boot 18 by hand as shown in FIG. At this time, if the cutting portion 32b protrudes from the end of the locking portion 34 of the binding band 30 as described above, the sharp edge of the cutting portion 32b touches the hand of the worker 50, causing pain. A person needs to avoid the cutting portion 32b and grasp the outer peripheral portion of the boot 18. When the operator grips the configuration in which the outer peripheral portion of the cable terminal with boots 10 is restrained by the binding band 30 by hand so as to avoid the cutting part 32b, the work work performed by holding the cable terminal with boots 10 is performed. Sex worsens. In general, the binding band is not assumed to be used by holding the outer peripheral portion of the restrained member by the hand after it is restrained. On the other hand, in the binding band 30, when the cut part 32 b protrudes from the end of the band insertion hole 35, it is considered that the cut part 32 b is hidden by winding a plurality of tapes (not shown) from the upper side. However, in this case, workability is deteriorated and the appearance is poor. In this case, the number of parts may increase and the cost may increase. The restraint band 40 of the embodiment described below has been invented in order to eliminate such inconvenience.

  FIG. 5 is a cross-sectional view showing the locking portion 41 in the restraint band 40 of the embodiment. FIG. 6 is a cross-sectional view corresponding to FIG. 5 illustrating a state in which the band portion 32 is inserted into the locking portion 41 and pulled to the outlet side. FIG. 7 is a cross-sectional view showing a state where an excess portion is cut from the state of FIG.

  The restraining band 40 includes a band portion 32 and a locking portion 41. Hereinafter, in the restraint band 40, the same components as those in the binding band 30 of the comparative example shown in FIGS. 1 to 4 are denoted by the same reference numerals, and redundant description is omitted or simplified. The locking part 41 includes a band insertion hole 35, a locking claw 36 formed in the band insertion hole 35, an inner wall part 42 and a lever part 44.

  The inner wall portion 42 rises in the direction of blocking the band insertion hole 35 from the inner surface on the same side as the locking claw 36 at the end portion on the outlet 35a side of the band insertion hole 35 and is bent between the locking claw 36 and the inner wall portion 42. A recess 46 is formed. At this time, the height of the inner wall portion 42 in the direction of blocking the band insertion hole 35 may be larger than the height of the locking claw 36.

  The lever portion 44 is formed so as to extend from the inner surface on the side opposite to the locking claw 36 toward the bending concave portion 46 in the band insertion hole 35. A bent portion 44 a that is slightly bent toward the outlet 35 a side is formed at the distal end portion of the lever portion 44. As shown by a two-dot chain line in FIG. 5, the lever portion 44 can be elastically bent and deformed so that the tip is directed toward the outlet side. The locking claw 36, the inner wall portion 42, and the lever portion 44 are integrally formed when the locking portion 41 is molded with resin.

  In addition, as shown in FIG. 6, the other end in the longitudinal direction of the band portion 32 may be inserted from the inlet 35b of the band insertion hole 35 toward the outlet 35a and pulled in the direction of the arrow α so as to protrude from the outlet 35a. . At this time, the lever portion 44 is pushed by the other side surface in the thickness direction of the band portion 32 (upper side surface in FIG. 6), and is bent so as to elastically fall toward the outlet 35a side. In this state, the locking claw 36 is locked in the locking recess 33. At this time, the locking claw 36 hardly resists the movement of the band portion 32 in the arrow α direction (movement toward the outlet side), but the movement of the band portion 32 to the opposite side of the arrow α. Therefore, the locking claw 36 becomes a resistance. This prevents the band portion 32 from coming off from the inside of the locking portion 41.

  Further, when the other end in the longitudinal direction of the band portion 32 is inserted into the band insertion hole 35, and the surplus portion protruding from the outlet 35 a of the band insertion hole 35 in the band portion 32 is cut, the band portion is moved by the lever portion 44. The cut end R (FIG. 7) is configured to be pressed. Then, as shown in FIG. 7, the cut end R of the band portion 32 enters the bending concave portion 46.

  Specifically, in the band portion 32, when an excessive portion protruding from the outlet 35 a of the band insertion hole 35 is cut, the band portion 32 is moved to the other side in the longitudinal direction (left side in FIGS. 6 and 7). The pulling force is lost. Accordingly, the cut end R of the band portion 32 is pressed toward the bending recess 46 by the spring force of the lever portion 44 when the shape of the lever portion 44 is deformed in the returning direction as shown in FIG. Is done. For this reason, the cut end portion R of the band portion 32 enters the bending concave portion 46 in a bent state, and the cut end portion R of the band portion 32 is maintained while entering the inside of the band insertion hole 35. The

  When the boot 18 of the cable terminal 10 with a boot shown in FIG. 1 is restrained from the outside by the restraining band 40, the position of the boot 18 is prevented from being displaced, and the locking portion 41 is small, so that it looks good. Improvements can be made. Furthermore, when the surplus part of the band part 32 which protruded from the latching | locking part 41 is cut | disconnected, it can suppress that the cutting part 32b protrudes from the latching | locking part 34. FIG. Thereby, when an operator grasps the cable terminal 10 with a boot restrained with the restraint band 40 by hand from the outside, it is possible to eliminate or reduce the necessity of avoiding the cutting portion. For this reason, since the freedom degree of the holding part of the operator in the cable terminal 10 with a boot improves, the workability | operativity of the operation | work performed by holding a cable terminal with a boot can be aimed at.

  In addition, when the cable of the cable terminal with boot 10 is a high-voltage cable connected to the rotating electric machine of the hybrid vehicle, the cable terminal with boot is large and tends to increase in weight. The burden of is likely to be high. In this case, the effect of improving workability using the restraint band 40 of the embodiment becomes more remarkable.

  In the above embodiment, the case where the boot 18 of the cable terminal 10 with boot is restrained by the restraining band 40 has been described. However, the restrained member restrained by the restraining band is not limited to the cable terminal 10 with boot. The restraint band only needs to be wound around the outer periphery of various restrained members and restrained.

  DESCRIPTION OF SYMBOLS 10 Cable terminal with boot, 12 Electric wire cable main body, 14 Connector, 15 Housing part, 15a Resin part, 16 Mounting part, 16a Hole, 17 Terminal part, 18 Boot, 18a Large diameter cylindrical part, 18b Small diameter cylindrical part, 22 Tube, 30 binding band, 32 band part, 32a annular part, 32b cutting part, 33 locking recess, 34 locking part, 35 band insertion hole, 35a outlet, 35b inlet, 36 locking claw, 40 locking band, 41 locking part 42, inner wall part, 44 lever part, 44a bent part, 46 concave part for bending, 50 operator.

Claims (1)

A long and flexible band,
A band insertion hole formed at one end in the longitudinal direction of the band portion and passing through the other end side of the band portion, and a locking claw formed inside the band insertion hole, formed in the band portion And a locking part having a locking claw for locking, and the band part wound around the outer periphery of the restrained member is inserted through the band insertion hole, and the band part is A restraining band that restrains the restrained member by the catching claw being latched in the catching recess,
On the outlet side of the band insertion hole, an inner wall portion that rises in a direction that blocks the band insertion hole from the side surface on the same side as the locking claw, and forms a bending recess with the locking claw;
The band insertion hole includes a lever portion that is formed to extend from the side surface opposite to the locking claw toward the bending concave portion, and is elastically deflectable.
When the band portion is inserted into the band insertion hole, and an excessive portion of the band portion protruding from the outlet of the band insertion hole is cut, the cut end portion of the band portion is the concave portion for bending. A restraint band configured to be pressed by the lever portion to enter.

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