JP2021055675A - Actuator - Google Patents

Abstract

To provide an actuator capable of suppressing pressure drop of a gas for actuation in actuation.SOLUTION: An actuator includes an inner member housing a gas generator in an inner case and connected to a first connection portion, and an outer member connected to a second connection portion and moving to separate the first connection portion and the second connection portion by a gas for actuation from the gas generator. The inner member is composed of: the gas generator; a connector to which a terminal pin of the gas generator is fitted; a seal material closely kept into contact with an inner peripheral face of the inner case in a state that a lead wire from the connector penetrates therethrough; and a spacer 63 disposed in the inner case so that the lead wire is projected to the outside of the inner case. The spacer includes a ceiling wall portion 64 having a ceiling surface 64a kept into contact with the seal material, and the ceiling surface 64a includes an insertion hole 69a to which the lead wire is inserted, and has a continuous integral planar shape excluding the insertion hole 69a.SELECTED DRAWING: Figure 13

Description

INDUSTRIAL APPLICABILITY The present invention is suitably used for an automobile safety device mounted on a vehicle, such as a hood flip-up device that is operated to lift a hood panel when operating, for example, when receiving a pedestrian as a protected object. Regarding actuators.

Some conventional actuators of this type are used in a hood flip-up device to lift the hood panel, covering the inner member with the gas generator as the drive source housed in the inner case and the inner case. It is configured to include an outer member that is arranged and moves forward away from the inner member by the working gas generated by the gas generator to lift the hood panel (see, for example, Patent Document 1). .. In this actuator, in detail, the inner member and the outer member are connected to the pair of connecting portions of the hinge arm side and the hood panel side in the hinge mechanism of the hood panel, respectively. That is, the inner member was connected to the first connecting portion on one hinge arm side of the pair of connecting portions, and the outer member was connected to the second connecting portion on the other hood panel side of the pair of connecting portions.

Then, the inner member starts from the gas generator, the connector into which the terminal pin for inputting the operation signal of the gas generator is fitted, and the connector in order from the open end side in the inner case that discharges the working gas to the outer member side. The inner case so that the protruding lead wire is passed through and is in contact with the substantially disk-shaped sealing material that is pressed against the inner peripheral surface of the inner case and the lead wire is projected out of the inner case. The inner case and the spacer are configured by arranging a spacer disposed inside, and further, a connector connected to the first connecting portion on the end side away from the opening end of the inner case is used as the inner case and the spacer. It was penetrated, the spacer was fixed to the inner case, and was connected to the first connecting portion. This spacer was composed of a pair of half-split columnar split bodies, and a lead wire was held between the pair of split bodies. Further, the spacer is configured to be connected to the inner case by rivets in advance before penetrating the connector, and is stored in the inner case with the lead wire held between the pair of divided bodies. Then, it was installed in the inner case by rivets.

JP-A-2017-180668

However, in the conventional actuator, the spacer is composed of a pair of half-split columnar split bodies, and a separation line in which each of the split faces of the pair of split bodies is combined is arranged on the ceiling surface in contact with the sealing material. It was supposed to be done. Therefore, during operation, when the sealing material receives the pressure of the operating gas of the gas generator and is pressed toward the spacer side, it is possible to prevent the sealing material from entering between the dividing surfaces from the separation line of the pair of divided bodies. There wasn't. In particular, there is a slight gap between the inner peripheral surface of the inner case and the outer peripheral surface of the spacer so that the spacer can be inserted into the inner case. The bodies were pressed against each other on the inner peripheral surface side of the inner case, making it easier for the sealing material to enter between the divided surfaces. Then, if a large amount of sealing material enters between the divided surfaces, the sealing performance of the sealing material is deteriorated, causing leakage of the working gas to the spacer side, and as a result, the pressure of the working gas is lowered. Inviting, there is a possibility that the actuator during operation may not be able to exert a predetermined output.

The present invention solves the above-mentioned problems, and an object of the present invention is to provide an actuator capable of suppressing a pressure drop of a working gas during operation.

The actuator according to the present invention includes an inner member that is configured by accommodating a gas generator that generates operating gas during operation in an inner case and is connected to a first connecting portion.
The inner case is covered and connected to the second connecting portion, and the inner is separated from the first connecting portion and the second connecting portion by the pressure of the operating gas generated from the gas generator. An outer member that moves forward with respect to the member,
With
The inner member
From the end side of the inner case that discharges the working gas to the outer member side, in order.
With the gas generator
A connector into which a terminal pin for inputting an operation signal of the gas generator is fitted,
A substantially disk-shaped sealing material that penetrates the lead wire protruding from the connector and is pressed against the inner peripheral surface of the inner case.
A spacer disposed in the inner case so as to abut the sealing material and to project the lead wire out of the inner case.
In addition to being configured by arranging
On the end side of the inner case away from the open end, a connector connected to the first connecting portion is passed through the inner case and the spacer, and the spacer is fixed to the inner case. , An actuator having a configuration of being connected to the first connecting portion.
The spacer comprises a ceiling wall portion having a ceiling surface that abuts on the sealing material.
The ceiling surface of the ceiling wall portion opens an insertion hole through which the lead wire is inserted away from the outer peripheral edge of the ceiling surface, and the inner is formed as a continuous integrated surface except for the insertion hole. It is characterized in that it is arranged so as to cover the entire area on the inner peripheral side of the case.

In the actuator according to the present invention, the operating gas generated from the gas generator pushes the outer member from the open end of the inner case to move the outer member forward with respect to the inner member during operation. At that time, the working gas presses the sealing material toward the spacer side, but the ceiling surface of the ceiling wall portion in contact with the sealing material of the spacer is a continuous integral surface except for the insertion hole through which the lead wire is inserted. Since it is arranged so as to cover the entire inner peripheral side of the inner case, the sealing material does not enter between the divided surfaces as in the conventional case, and therefore the sealing performance is deteriorated. This prevents the sealing material from entering the spacer side, and does not cause a decrease in the pressure of the working gas.

Therefore, in the actuator according to the present invention, it is possible to suppress a pressure drop of the operating gas during operation.

Then, in the actuator according to the present invention, the spacer is formed as an integrally molded product made of synthetic resin, provided with a guide recess for guiding the lead wire extending from the connector to the outside of the inner case from the insertion hole. It is desirable to be there.

In such a configuration, since the spacer is not formed from a pair of divided bodies as in the conventional case but is composed of one component of an integrally molded product, the number of parts of the actuator can be reduced, and the assembly can be performed. It is possible to reduce the time and effort required for attachment and parts management. Regarding the handling of the lead wire, unlike the conventional structure of sandwiching and holding the lead wire between a pair of divided bodies, the lead wire is inserted into the guide recess and the insertion hole, and at first glance, it takes time and effort. However, it is conceivable that the lead wire may be inserted into the spacer insertion hole and the guide recess at the same time when the lead wire is passed through the sealing material, so that the handling of the lead wire is not significantly complicated.

Further, in the actuator according to the present invention, the inner case includes a locking hole that penetrates from the inner peripheral surface side to the outer peripheral surface side.
When the spacer is inserted into the inner case, it bends inward and slides on the inner peripheral surface of the inner case, and when it is placed in the locking hole, it is restored and engages with the peripheral edge of the locking hole. With locking claws, which can be stopped,
It is desirable that the arrangement position of the locking hole and the locking claw is set at the fixed position of the spacer with respect to the inner case corresponding to the position where the spacer is attached.

In such a configuration, if the spacer is inserted into the inner case, when the locking claw of the spacer bends and is placed in the locking hole of the inner case, it is restored and engages with the peripheral edge of the locking hole. Since it stops, the spacer is attached to the inner case. The mounting completion position is set with respect to the inner case so that the through holes of the inner case and the spacer are matched before the fitting to be attached to the first connecting portion is passed through the through holes of the inner case and the spacer. It corresponds to the fixed position to attach the spacer, and compared to the case where the spacer is attached to the inner case by the conventional rivet, the spacer can be easily attached by the attachment work that only locks the locking claw into the locking hole. Can be attached to the case.

Further, in the actuator according to the present invention, when the spacer is made of synthetic resin and includes a lead wire for projecting the lead wire from the inner case, the lead wire is fixed on the spacer side. A piece and a movable side piece connected to the fixed side piece via a hinge portion made of an integral hinge are provided, and the fixed side piece and the movable side piece are the hinge portion. To provide an engaging portion that engages with each other so that the facing states of each other can be maintained when the facing portions of each other are opposed to each other, and the facing portions of each extend from the insertion hole side. It is desirable to configure the lead wire so that it can be sandwiched.

In such a configuration, when the spacer is provided with a lead wire that projects the lead wire from the inner case, the lead wire is arranged at a portion of the fixed side piece facing the movable side piece, and then the lead wires are engaged with each other. By engaging the portions and engaging the movable side piece with the fixed side piece, the lead wire can be sandwiched between the opposite portions of the fixed side piece and the movable side piece. Therefore, after the spacer is arranged inside the inner case with the lead wire sandwiched between the lead wires, the lead wire does not shift even if the lead wire is pulled from outside the inner case, and the lead wire on the connector side is not displaced. It is possible to prevent the disconnection of the wire.

It is a schematic partial vertical sectional view of the vehicle which shows the mounting state of the hood flip-up device using the actuator of one Embodiment which concerns on this invention, and is the figure which shows the state before and after the operation of the actuator of Embodiment. It is a schematic cross-sectional view of the vehicle-mounted state of the actuator of the embodiment, and corresponds to the part II-II of FIG. It is a schematic vertical sectional view of the actuator of an embodiment. It is a schematic vertical sectional view which shows the actuating time of the actuator of an embodiment. It is a schematic vertical sectional view which shows the locked state after the operation of the actuator of an embodiment is completed. It is the schematic perspective view of the outer member used for the actuator of an embodiment. It is the schematic perspective view of the inner case of the inner member used for the actuator of an embodiment. It is the schematic perspective view of the support fixing member of the inner member used for the actuator of an embodiment. It is a schematic front view and a schematic side view of the support fixing member of an embodiment. It is a schematic vertical sectional view of the support fixing member of an embodiment. It is the schematic perspective view of the two split bodies of the connector of an embodiment. It is a front view of the spacer of an embodiment. It is a schematic perspective view of the spacer of an embodiment. It is a schematic exploded perspective view which shows the spacer of the modification of embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the actuator 21 of the embodiment is a hood flip-up device as an automobile safety device (hereinafter, appropriately, a “jump-up device””. It is used for U, and is arranged on each of the left and right hinge mechanisms 11 on the rear end 5a side of the hood panel 5 in the vehicle V.

The front bumper (not shown) of the vehicle V is provided with a sensor capable of detecting or predicting a collision with a pedestrian, and a control circuit (not shown) for inputting a signal from the sensor is provided from the sensor. When a collision between the vehicle V and a pedestrian is detected based on the signal, an explosive (not shown) of the gas generator 53 of the actuator 21 is ignited (see FIGS. 2 to 4) to generate an operating gas G. It is configured to operate the actuator 21 to operate the flip-up device U (see B in FIG. 1 and FIG. 4).

As shown in A of FIG. 1, the hood panel 5 is arranged so as to cover the upper part of the engine room ER in the vehicle V, and the vehicle is provided with hinge mechanisms 11 arranged on both left and right sides near the rear end 5a. It is connected to the vehicle body (body) 1 side of V so that it can be opened and closed by opening forward. The hood panel 5 is configured to be plastically deformable, and when the vehicle V collides with a pedestrian, the actuator 21 is activated, and as shown in B of FIG. 1, the raised rear end 5a of the hood panel 5 and the hood panel 5 Since the deformation space S can be formed between the engine room ER and the engine room ER, the amount of plastic deformation at the time of bending plastic deformation can be increased, and the hood panel 5 can absorb a large amount of pedestrian kinetic energy. ..

The hinge mechanism 11 includes a hinge base 12 fixed to the body 1 side below the rear end 5a of the hood panel 5, a mounting plate 15 arranged on the lower surface side of the rear end 5a of the hood panel 5, and a hinge base 12. A hinge arm 14 pivotally supported by the mounting plate 15 is provided. Specifically, the hinge base 12 is fixed to a mounting flange 2 connected to a hood ridge rein hose or the like on the body 1 side. Then, when the hood panel 5 is opened for normal use, the hinge mechanism 11 opens with the shaft support portion on the base end 14a side of the hinge arm 14 on the hinge base 12 side as the rotation center (two-dot chain line A in FIG. 1). reference).

The hinge arm 14 is arranged so as to extend the tip 14b forward from the base end 14a, and the base end 14a is connected to the rear end side of the hinge base 12 by using the support shaft 13, and the support shaft 14a is connected to the rear end side of the hinge base 12. It is rotatable with 13 as the center of rotation, and the tip 14b side is also connected to the front end side of the mounting plate 15 by using the support shaft 16, and is rotatable around the support shaft 16 as the center of rotation. .. The left and right support shafts 13 and 16 are arranged so that the axial directions are along the left and right directions of the vehicle V, respectively. However, in normal use, the actuator 21 connected to the pair of connecting portions 14c and 15a of the hinge arm 14 and the mounting plate 15 locks the outer member 70 with the locking ring 48 (see FIG. 3) described later. Since it does not extend, the hinge arm 14 does not rotate with respect to the mounting plate 15. Therefore, the hood panel 5 opens and closes with the portion of the support shaft 13 as the center of rotation when opening and closing in normal use.

Further, the left and right hinge mechanisms 11 are arranged symmetrically, and both ends of the actuator 21 (connecting portions 38) are connected to a pair of connecting portions 14c and 15a on the engine room ER side of the hinge arm 14 and the mounting plate 15, respectively. , 78) are connected. The connecting portion 14c as the first connecting portion of the hinge arm 14 with the actuator 21 is arranged closer to the tip 14b side than the intermediate portion between the base end 14a and the tip 14b, and the actuator 21 of the mounting plate 15 is arranged. The connecting portion 15a as the second connecting portion with and is arranged behind the support shaft 16.

A hood lock mechanism (not shown) is provided on the front end side of the hood panel 5, and if the actuator 21 operates and extends, the crossing angle θ0 between the hinge arm 14 and the mounting plate 15 becomes large. The hood panel 5 raises the rear end 5a without raising the front end side locked to the hood lock mechanism.

As shown in FIGS. 2 to 4, the actuator 21 of the embodiment houses the gas generator 53 for generating the operating gas G during operation, and is connected to the connecting portion 14c as the first connecting portion. The member 22 and the inner member 22 are covered and connected to the connecting portion 15a as the second connecting portion, and the connecting portion 14c and the second connecting portion 14c as the first connecting portion are connected by the pressure of the operating gas G generated by the gas generator 53. It is configured to include an outer member 70 that moves forward so as to lift the hood panel 5 by separating the connecting portion 15a as the connecting portion.

The inner member 22 is arranged on the inner peripheral side of the metal inner case 23 made of substantially cylindrical steel or the like and the inner peripheral side of the inner case 23, and holds (supports) the gas generator 53 and is stored in the inner case 23. It is composed of a support fixing member 55 for fixing.

As shown in FIGS. 2 to 4 and 7, the inner case 23 of the inner member 22 is provided with a tip portion 24 having a circular opening 25a for flowing out the working gas G on the tip surface 25 on the tip side. A connecting portion 38 to be connected to the connecting portion 14c as the first connecting portion of the hinge mechanism 11 is arranged on the base portion 36 on the end portion side away from the tip portion 24. The connecting portion 38 is opened with a connecting hole 38a for inserting a connecting tool (bolt) 18 arranged in the connecting portion 14c through the connecting portion 38 so as to be orthogonal to the axis C1 of the inner member 22. .. The connecting portion 38 is rotatably connected to the connecting tool 18 and the connecting portion 14c by fastening the nut 17 to the connecting tool 18.

The connecting portion 38 of the inner case 23, which is made of metal and has high rigidity, constitutes the connecting portion 22a of the inner member 22 itself, and has two positions orthogonal to the axis C1 of the peripheral wall portion 36b on the cylindrical base portion 36 side. The circular connecting holes 38a and 38a that open at the site form the connecting holes 22b of the inner member 22 itself. The connecting holes 38a and 38a are pressed against the connecting tool 18 with the inner peripheral surface 38b of the outer member 70 on the moving direction side as the pressing side inner peripheral surface 38c.

Further, on the base 36 side, a locking hole 40 for locking the locking claw 67 for preventing the support fixing member 55 from coming off also penetrates at two places so as to be orthogonal to the axis C1. There is. The locking hole 40 is opened in a substantially square shape and is arranged on the end face 36a side away from the gas generator 53 from the connecting hole 38a. Further, on the end surface 36a side of the base portion 36, a storage recess 42 for fitting the lead-out portion 68 that stores and holds the lead wire 60 of the support fixing member 55 is also arranged.

Further, the inner peripheral surface 23b of the inner case 23 is provided with a step 34 inclined so as to increase the diameter in order to position the gas generator 53 at a position away from the tip portion 24 toward the base portion 36. There is.

The tip 24 of the inner case 23 is provided with a collar-shaped projecting portion 26 projecting to the outer peripheral side. The flange-shaped protruding portion 26 functions as a stopper for preventing the outer member 70 from coming off, and the surface on the base 36 side is brought into contact with the tip surface 82b of the sliding portion 82 of the holder portion 80 of the outer member 70. The regulation surface is 26a. The regulation surface 26a stops the forward movement of the outer member 70 when the actuator 21 is operated, and limits the maximum extension (maximum operating stroke) of the actuator 21.

Further, on the outer peripheral surface of the flange-shaped protrusion 26, an annular groove 27 on the tip surface 25 side, a storage groove 28 on the regulation surface 26a side, and a concave groove 29 between the annular groove 27 and the storage groove 28 are formed. , Is formed all around. A sealing material 46 made of a rubber O-ring and a metal backup ring 47 are fitted in the annular groove 27, and the lock ring 50 is housed in the storage groove 28. The sealing material 46 slides in a state of being in pressure contact with the inner peripheral surface 74a of the peripheral wall portion 73 described later of the outer member 70 in order to secure the gas sealing property when the outer member 70 moves forward. The backup ring 47 has a slit (not shown) that can be expanded and has an outer diameter smaller than that of the sealing material 46, and is configured so as to stabilize the sealing state of the sealing material 46 to the outer member 70. It is arranged on the concave groove 29 side of the sealing material 46 so that the 46 can be supported.

The lock ring 50 housed in the storage groove 28 constitutes a retreat prevention lock mechanism BR for preventing the outer member 70 from retreating when the operation of the actuator 21 is completed (see FIG. 5). The lock ring 50 is formed of a C ring such as spring steel having a circular cross section and elastically deformable. The storage groove 28 is configured to have a triangular concave cross section that opens downward, and is provided with a taper regulating surface 28a that is inclined so as to expand the diameter toward the base 36 side. The lock ring 50 is elastically deformed so as to be reduced in diameter and stored in the storage groove 28, and even if an attempt is made to increase the diameter so as to restore the lock ring 50, the lock ring 50 is restricted to the inner peripheral surface 74a of the peripheral wall portion 73 of the outer member 70. Then, when the portion of the enlarged diameter portion 75 (specifically, the extension portion 84) of the outer member 70 reaches the lock ring 50, the lock ring 50 is restricted to the inner peripheral surface 84c of the extension portion 84 and does not come off from the storage groove 28. When the diameter is expanded and then the outer member 70 moves backward, it is sandwiched between the stepped surface (end surface) 75a of the enlarged diameter portion 75 and the taper regulation surface 28a, and the backward movement of the outer member 70 is stopped. In addition, the outer member 70 is stopped at the lock position RP and locked.

Further, a locking groove 44 for locking the locking ring 48 is formed on the outer peripheral surface 23a on the base 36 side of the inner case 23 over the entire circumference. The locking ring 48 is made of rubber, synthetic resin, or the like, and is provided on the inner peripheral surface of the peripheral wall portion 73 of the outer member 70 on the terminal side so that the actuator 21 does not extend when the front end side of the hood panel 5 is opened and closed. The locking groove 77 is locked. The locking ring 48 maintains the state of being locked to the inner case 23 when the actuator 21 is operated, releases the locked state of the outer member 70 from the locking groove 77, and moves the outer member 70 forward. Tolerate.

The outer peripheral surface 23a of the columnar intermediate portion 30 between the tip portion 24 and the base portion 36 of the inner case 23 serves as a sliding portion on which the sliding portion 82 of the holder portion 80 of the outer member 70 slides. ..

As shown in FIGS. 2 to 4 and 9, the gas generator 53 ignites a predetermined explosive (not shown) during operation and is generated by the combustion of the explosive itself or by the combustion of the gas generator ignited by the explosive. A squib, a micro gas generator, or the like that generates an operating gas G from the tip 53a is used. A collar portion 53c that abuts on the step 34 of the inner case 23 is arranged on the base portion 53b side away from the tip end 53a of the gas generator 53, and the gas generator 53 is operated on the end surface on the base portion 53b side. Two terminal pins 53d, which form an input unit for inputting an operating electric signal for the purpose, are provided so as to project.

As shown in FIGS. 2, 3, 8 to 10, the support fixing member 55 arranged in the inner case 23 holds the gas generator 53 and fixes it in the inner case 23, and has a substantially cylindrical shape. It is said. The support fixing member 55 is provided with a locking claw 67 to be locked in the locking hole 40 of the inner case 23 so as to be held in the inner case 23, and is concentric with the connecting hole 38a of the inner case 23. Therefore, a connecting hole 66 opened in a circle is arranged so as to penetrate the support and fixing member 55 in the direction orthogonal to the axis. As described above, the connecting tool 18 penetrating the connecting hole 38a is passed through the connecting hole 66.

Further, the support fixing member 55 includes a connector 56 for connecting the terminal pin 53d of the gas generator 53, a sealing material 62 for ensuring the sealing property, and the connector 56 in order from the end side of the opening 25a of the inner case 23. A spacer (a spacer that supports the inner case 23 so as not to come off by interposing a sealing material 62 and arranges the lead wire 60 extending from the connector 56 so as to be bent and extended from a predetermined position by adjusting the length. It is configured by disposing the extension spacer) 63.

In the case of the embodiment, as shown in FIGS. 2 and 3, the inner diameter dimension d2 of the connecting hole 66 of the support fixing member 55 is set to be slightly larger than the inner diameter dimension d1 of the connecting hole 38a of the inner case 23. (D2> d1).

As shown in FIGS. 2, 8 to 11, the connector 56 is made of a synthetic resin made of polyamide or the like, and is composed of divided bodies 57, 58 which are divided into two along the axis orthogonal direction C1V of the inner member 22. There is. Further, as shown in FIGS. 8 to 10, the connector 56 fits the assembly holes 56a and 56a into which the terminal pin 53d of the gas generator 53 is inserted and the base portion 53b of the gas generator 53 on the upper end surface side. A fitting recess 56b to be fitted is provided, and a fitting portion 56c fitted to the sealing material 62 is projected downward at the lower end.

Then, the connector 56 is a socket (pin socket) for fitting each terminal pin 53d of the gas generator 53 inside as shown in FIGS. 3 and 10 when the divided bodies 57 and 58 are combined. A lead wire 60 extending from each pin socket 59 is sandwiched between the 59 and the lead wire 60. The member of reference numeral 61 is a support member 61 that supports the lead wire 60 in the vicinity of the pin socket 59.

As shown in FIG. 11, one of the divided bodies 57 is provided with a semicircular plate-shaped top plate portion 57a on the tip side on the gas generator 53 side, and a pin socket 59, below the top plate portion 57a. A substantially half-divided cylindrical half-divided tubular portion 57c having a lead wire 60 and a storage recess 57d capable of accommodating the support member 61 is arranged. The top plate portion 57a is formed with a through recess 57b having a shape in which the assembly hole 56a is divided in half so as to form an assembly hole 56a through which the terminal pins 53d and 53d pass. A semicircular plate-shaped bottom plate portion 57f is formed on the lower end side of the half-split cylinder portion 57c. Further, on the outer peripheral side of the half-split cylinder portion 57c near both edges, the locking protrusions that lock the two locking claws 58e and 58e extending from the split body 58 so as to unite the split bodies 57 and 58 with each other. Parts 57e and 57e are formed. The bottom plate portion 57f is formed with a support recess 57g for storing and supporting the lead wires 60 and 60 to be stored inside.

Similarly to the split body 57, the other split body 58 can also form a fitting recess 56b of the connector 56 on the tip side on the gas generator 53 side, corresponding to the top plate portion 57a on the split body 57 side. A semicircular cylindrical top plate portion 58a having a semicircular plate-shaped top plate portion 58a and a storage recess 58d capable of accommodating a pin socket 59, a lead wire 60, and a support member 61 below the top plate portion 58a. The half-split cylinder portion 58c is arranged. The top plate portion 58a is formed with a through recess 58b having an assembly hole 56a in half so that an assembly hole 56a through which the terminal pins 53d and 53d can be penetrated can be formed together with the through recess 57b of the divided body 57. Has been done. Further, a semicircular plate-shaped bottom plate portion 58f is formed on the lower end side of the half-split cylinder portion 58c. Two locking claws 58e and 58e for locking to the locking protrusions 57e and 57e of the split body 57 are projected on the outer peripheral side of the half-split cylinder portion 58c near both edges. The bottom plate portion 58f is formed with a support recess 58g for storing and supporting the lead wires 60 and 60 to be stored inside.

Then, in the divided bodies 57 and 58, the pin socket 59, the lead wire 60, and the support member 61 are arranged at predetermined positions in the storage recesses 57d and 58d, and the top plate portions 57a and 58a and the half-split cylinder portion 57c are arranged. , 58c, and the bottom plate portions 57f, 58f facing each other (contact surfaces) 57h, 58h are brought into contact with each other, and the locking claw portions 58e, 58e are locked to the locking convex portions 57e, 57e. The connector 56 can be formed by combining the divided bodies 57 and 58.

As shown in FIGS. 8 to 10, the sealing material 62 is made of rubber having a sealing property, and has a substantially disk-shaped bottom wall portion 62a and a substantially cylindrical peripheral wall extending upward from the outer peripheral edge of the bottom wall portion 62a. It has a U-shaped cross section including a portion 62d. The bottom wall portion 62a is formed with two through holes 62b through which the lead wires 60 and 60 are inserted. On the outer peripheral surface of the bottom wall portion 62a, two lip portions 62e that are pressed against the base portion 36 side of the inner peripheral surface 23b of the inner case 23 are arranged over the entire circumference.

As shown in FIGS. 2, 3, 8 to 10, 12, and 13, the spacer 63 is formed in a substantially columnar shape made of a synthetic resin made of polyamide or the like, and has lead wires 60 and 60 on the outer periphery on the lower end side. A lead-out unit 68 that holds and projects the lead wires 60 and 60 is provided so that the lead wires 60 and 60 are bent and discharged. The connecting hole 66 through which the connecting tool 18 penetrates is arranged so as to be displaced below the held lead wires 60, 60, although it partially overlaps with the lead-out portion 68 in the area along the axis of the support fixing member 55. The locking claws 67 are arranged so as to be offset further below the connecting hole 66.

The spacer 63 is formed as an integrally molded product, and has a substantially disk-shaped ceiling provided with insertion holes 69a, 69a through which lead wires 60, 60 extending from the sealing material 62 are inserted on the upper end side of a substantially columnar columnar portion 65. It is configured by disposing the wall portion 64. The ceiling surface 64a of the ceiling wall portion 64 is arranged so as to cover the entire inner peripheral side of the inner case 23 as a continuous integral surface shape except for the insertion holes 69a through which the lead wires 60 and 60 are inserted. Has been done.

Further, the spacer 63 has a guide recess 69b opened on the side surface of the columnar portion 65. The guide recess 69b, together with the insertion holes 69a and 69a, constitutes a lead wire guide portion 69 that guides the lead wires 60 and 60 extending from the sealing material 62 to the lead wire portion 68. The guide recess 69b includes a straight portion 69c that extends linearly from the insertion holes 69a and 69a, and a bent portion 69d that bends toward the lead-out portion 68 at the lower end side of the straight portion 69c. The straight portion 69c is provided with a partition wall 69f that separates the lead wires 60 and 60. Further, a support protrusion 69e for supporting the lead wires 60 and 60 is provided on the inner peripheral side of the guide recess 69b.

The lead-out portion 68 includes a fixed side piece 68a and a movable side piece 68f which are divided into two so as to sandwich the lead wires 60 and 60 with a hinge portion 68k composed of an integral hinge on the upper end side in between. It is configured. When the fixed side piece 68a and the movable side piece 68f are overlapped with each other, the storage recesses 68c and 68h as facing portions for storing the lead wires 60 and 60 are provided so as to be connected to the bent portion 69d of the guide recess 69b. In addition to being provided, contact portions 68b and 68g that come into contact with each other are provided, and further, a locking projection 68d and a locking hole portion 68i as engaging portions that engage with each other are arranged. When the locking projection 68d and the locking hole 68i are engaged with each other, the storage recesses 68c and 68h of the fixed side piece 68a and the movable side piece 68f have the lead wires 60 and 60 on the facing surfaces thereof. It is configured to have holding surfaces 68e and 68j that can be held by holding. Then, in the case of the embodiment, the fixed side piece 68a is projected from the columnar portion 65, and the movable side piece 68f is directly connected to the fixed side piece 68a with the hinge portion 68k interposed therebetween. It is not projected from the part 65. The locking projection 68d is arranged on the fixed side piece 68a, and the locking hole portion 68i is arranged on the movable side piece 68f. When the locking projection 68d is locked to the locking hole portion 68i, the fixed side piece 68a and the movable side piece 68f are brought into contact with each other by the contact portions 68b and 68g, and the bent portion 69d of the guide recess 69b is brought into contact with each other. As described above, the extending lead wires 60 and 60 are held so as to be sandwiched between the sandwiching surfaces 68e and 68j of the storage recesses 68c and 68h, and the spacer 63 is projected in the direction orthogonal to the axis.

The lead wires 60 and 60 sandwiched between the sandwiching surfaces 68e and 68j of the storage recesses 68c and 68h are not easily displaced, and even if the lead wires 60 and 60 are pulled from outside the inner member 22, they are not easily displaced. The force is not propagated to the pin socket 59 side in the connector 56, and the lead wires 60 and 60 in the connector 56 can be prevented from being broken.

Further, the spacer 63 is provided with a recess 65b on the bottom surface 65a side of the columnar portion 65, and a hook portion 67b protruding outward in the axial orthogonal direction of the spacer 63 at the tip of the square columnar shaft portion 67a. The locking claws 67 are arranged. The locking claw 67 is arranged so as to extend upward from the bottom surface side of the through hole 65c penetrating in the direction orthogonal to the axis of the spacer 63.

The lead wires 60 and 60 are assembled to the connector 56 in advance, and the terminal side of the lead wire 60 extending from the connector 56 (not shown) is passed through the through holes 62b and 62b of the sealing material 62, and further, the spacer 63. The insertion holes 69a and 69a of the above are passed through, and the movable side piece 68f is inserted into the guide recess 69b, and the movable side piece 68f is stored in the storage recess 68c of the open fixed side piece 68a, and then the movable side piece 68f is stored in the fixed side piece. The locking projection 68d is locked to the locking hole 68i so as to be overlapped with the 68a, and is held between the storage recesses 68c and 68h. When the lead wires 60, 60 are arranged, the support and fixing member 55 composed of the connector 56, the sealing material 62, and the spacer 63 is assembled via the lead wires 60, 60. That is, the fitting portion 56c of the connector 56 fits into the peripheral wall portion 62d of the sealing material 62, the lower surface 62c of the sealing material 62 abuts on the ceiling surface 64a of the spacer 63, and the support fixing member 55 is assembled. ..

The assembled support / fixing member 55 attaches the gas generator 53 to the connector 56, inserts it into the inner case 23 from the base 36 side, and engages the locking claws 67, 67 with the locking holes 40, 40. If stopped, it can be assembled to the inner case 23 to form the inner member 22.

Further, at the time of this assembly, when the spacer 63 is inserted into the inner case 23, the locking claw 67 bends inward and the hook portion 67b is slid on the inner peripheral surface 23b of the inner case 23 to lock the spacer 63. When it is arranged in the hole 40, it is restored and locked to the peripheral edge of the locking hole 40, and further, the arrangement position of the locking hole 40 and the locking claw 67 at the time of locking is the inner case 23. It is set as a position to attach the spacer 63 at a fixed position with respect to. That is, at the time of locking, the connecting hole 38a of the inner case 23 and the connecting hole 66 of the spacer 63 are concentrically arranged.

As shown in FIGS. 2 to 4 and 6, the outer member 70 of the actuator 21 is made of metal such as steel, and has a ceiling wall portion 72 that covers the opening 25a at the tip portion 24 of the inner member 22 (inner case 23) and a ceiling. The receding side of the outer member 70, that is, the lower side of FIGS. 2 and 3 so as to cover the outer periphery of the inner member 22 from the outer peripheral edge of the wall portion 72 to the vicinity of the connecting hole 38a beyond the arrangement position of the gas generator 53. , And a substantially cylindrical peripheral wall portion 73 extending to the.

The outer member 70 is a steel holder portion that is separate from the outer main body 71 and the outer main body 71 that is crimped and fixed to the inner circumference of the peripheral wall portion 73 on the end portion 73a side away from the ceiling wall portion 72. It is composed of 80 and.

A connecting portion 78 having a round hole-shaped connecting hole 78a and being connected to the mounting plate 15 is projected from the ceiling wall portion 72 of the outer main body 71 on the upper surface side away from the tip portion 24. The connecting portion 78 is rotatably connected to the connecting portion 15a of the mounting plate 15 as the second connecting portion by using the shaft support (bolt) 19 inserted into the connecting hole 78a. .. The connecting tool 19 penetrates the connecting hole 78a and is fastened with a nut 17, and the connecting portion 78 is rotatably connected to the connecting portion 15a of the connecting tool 19 and the mounting plate 15.

The peripheral wall portion 73 has a sliding main body portion 74 and an inner peripheral side expanded in diameter from the sliding main body portion 74 along the axis C2 of the outer member 70 from the ceiling wall portion 72 to the end portion 73a. It is configured to include a diameter-expanded portion 75.

The inner peripheral surface 74a of the sliding main body portion 74 is slidable with the sealing material 46 of the inner member 22, so that the axial center C0 of the actuator 21 (that is, the outer member 70) can be moved forward while ensuring gas sealing property. Concentrically with the moving central axis C0) of, it is configured in the shape of a smooth circular arc surface.

The holder portion 80 is fixed to the diameter-expanded portion 75 by caulking the diameter-expanded portion 75 so as to reduce the diameter. The enlarged diameter portion 75 functions the stepped surface 75a on the ceiling wall portion 72 side as a portion for setting the lock position (reverse regulation position) RP of the outer member 70 by the lock ring 50, and maximizes the outer member 70. It is arranged so as to correspond to the position where it is retracted and stopped after being extended.

As shown in FIG. 5, the lock ring 50 in a state of being housed in the storage groove 28 constituting the retract prevention lock mechanism BR and having an enlarged diameter is formed by the stepped surface 75a and the taper regulating surface 28a of the storage groove 28. If it is sandwiched between them, as described above, the backward movement of the outer member 70 is restricted, and the actuator 21 supports the rear end 5a of the hood panel 5 as a state in which the deformation space S is provided without lowering. Therefore, the rear end 5a of the hood panel 5 is maintained in a lifted state.

The holder portion 80 is fixed to the inner peripheral side of the end portion of the enlarged diameter portion 75 of the peripheral wall portion 73 as a substantially cylindrical member made of metal such as steel as described above, and is used for caulking. The caulking recess 81 is provided with a sliding portion 82 provided on the outer peripheral side, and an extending portion 84 extending from the sliding portion 82 to the ceiling wall portion 72 side while expanding the diameter.

The sliding portion 82 has a substantially cylindrical shape. The inner peripheral surface 82a of the sliding portion 82 is configured as a smooth circular arc surface concentric with the axial center C2, and is slidable with the sliding portion 32 on the outer peripheral surface 23a of the inner member 22 so that the axial center C0 Guides the forward movement of the outer member 70 along the above. The inner diameter of the sliding portion 82 is set to be slightly larger than the outer diameter of the inner member 22 as a dimensional difference capable of guiding the sliding of the sliding portion 82 by the sliding portion 32 of the inner member 22. There is.

Further, the tip surface 82b of the sliding portion 82 on the extending portion 84 side is set to come into contact with the flange-shaped protruding portion 26 as a stopper of the inner member 22 when the forward movement of the outer member 70 is completed.

The extending portion 84 of the holder portion 80 extends the tip 84a extending from the sliding portion 82 toward the ceiling wall portion 72 side to a position where it comes into contact with the stepped surface 75a of the enlarged diameter portion 75. The inner diameter of the extension portion 84 is such that the portion of the extension portion 84 that has moved is arranged on the outer peripheral side of the lock ring 50 that has been reduced in diameter and stored in the storage groove 28, and the lock ring 50 is formed. Even if the diameter is increased so as to be restored, the expansion of the diameter of the lock ring 50 is restricted to prevent the lock ring 50 from coming off from the storage groove 28, and when the outer member 70 is subsequently retracted, the lock ring 50 is moved. , The size is set so that it can be sandwiched between the stepped surface 75a and the taper regulating surface 28a.

Further, a locking groove 77 is formed on the inner peripheral side of the end portion 75b of the enlarged diameter portion 75 away from the ceiling wall portion 72. Prior to the operation of the actuator 21, the locking groove 77 is arranged at a position corresponding to the locking groove 44 provided on the outer peripheral side of the base portion 36 of the inner case 23 of the inner member 22, and the locking groove 77 is provided. A locking ring 48 is arranged between the and 44.

The locking ring 48 is locked in the locking groove 44 of the base 36 of the inner member 22 to lock the locking groove 77 of the outer member 70, and prevents the actuator from extending before the actuator 21 operates. As described above, the hinge arm 14 does not rotate with respect to the mounting plate 15 unless the actuator 21 is extended. Therefore, the hood panel 5 can be opened and closed with the portion of the support shaft 13 as the center of rotation during normal use opening and closing. When the actuator 21 is activated, as shown in FIGS. 2 and 3, the locking ring 48 is maintained in a state of being locked in the locking groove 44 of the base 36 of the inner member 22, and the outer member 70 is locked. The locking groove 77 is separated from the ring 48 to move forward.

The locking ring 48 also has a function of ensuring waterproofness between the outer member 70 and the inner member 22 and preventing dust from entering between the outer member 70 and the inner member 22. There is.

Further, in the outer member 70, a plurality of exhaust holes 74b penetrating the inner and outer circumferences are penetrated in a portion of the peripheral wall portion 73 in the vicinity of the enlarged diameter portion 75 on the sliding main body portion 74 side. An assembly recess 85 for assembling a cylindrical closing member 86 made of a heat-shrinkable sheet or the like is formed on the outer peripheral surface side of the peripheral wall portion 73 at the arrangement position of the exhaust hole 74b.

When the outer member 70 moves forward when the actuator 21 operates and the exhaust hole 74b is arranged near the position beyond the tip portion 24 of the inner member 22, in other words, the closing member 86 of the outer member 70 The ceiling wall portion 72, the portion of the peripheral wall portion 73 of the outer member 70 from the ceiling wall portion 72 to the portion of the inner member 22 that is pressed against the sealing material 46 of the flange-shaped protruding portion 26, and the tip portion 24 of the inner member 22. When the gas chamber 91, which is composed of the space between the above and fills the working gas G, reaches the arrangement position of the exhaust hole 74b, it breaks due to the heat and pressure of the working gas G acting through the exhaust hole 74b. (See FIG. 5). The actuator 21 can exhaust the excess working gas G from the exhaust hole 74b due to the breakage of the closing member 86, and can reduce the forward moving force. As a result, the bounce of the rear end 5a of the hood panel 5 is suppressed. Corresponding to the position where the lock ring 50 is stationary at the locked position, the rear end 5a of the hood panel 5 can be stably supported in a lifted and stationary state.

In this actuator 21, the lead wires 60 and 60 are connected to a control circuit (not shown), and the connecting portions 38 and 78 are connected to the hinge arms 14 in the left and right hinge mechanisms 11 of the hood panel 5 by using the connecting tools 18 and 19. The actuator 21 can be arranged on the hinge mechanism 11 and the flip-up device U can be mounted on the vehicle V by connecting the actuator 21 to the connecting portion (connecting portion) 14c and 15a between the mounting plate 15 and the mounting plate 15.

In the flip-up device U of the embodiment after mounting on the vehicle V, if the gas generator 53 generates the working gas G when the actuator 21 is operated, the working gas G is connected to the ceiling wall portion 72 of the outer member 70. , The portion from the ceiling wall portion 72 of the peripheral wall portion 73 of the outer member 70 to the portion of the inner member 22 that is pressed against the sealing material 46 of the flange-shaped protruding portion 26, and the tip portion 24 of the inner member 22. The gas chamber 91 is filled with the working gas G, and the pressure of the working gas G is received by the ceiling wall portion 72, as shown by the solid line from the two-point chain line of B in FIG. , 4, the outer member 70 moves forward with respect to the inner member 22. At that time, the outer member 70 disengages the locking ring 48 from the locking groove 77, and the peripheral wall portion 73 of the outer member 70 uses the inner peripheral surface 74a as the sealing material 46 of the collar-shaped protrusion 26 of the inner member 22. In addition, the sliding portion 82 of the holder portion 80 in the outer member 70 slides with the sliding portion 32 on the outer peripheral side of the inner member 22 to move forward, and the actuator 21 extends. At this time, since the extending actuator 21 widens the intersection angle θ0 (see B in FIG. 1) between the mounting plate 15 and the hinge arm 14, the rear end 5a side of the hood panel 5 rises, and the hood panel 5 is deformed. A wide space S can be secured, and the impact can be mitigated and a pedestrian can be received by the plastic deformation with a large amount of deformation. Of course, at that time, the working gas G is exhausted from the exhaust hole 74b due to the breakage of the closing member 86.

Then, the tip surface 82b of the sliding portion 82 of the outer member 70 comes into contact with the regulation surface 26a of the flange-shaped protrusion 26 of the inner member 22, and the forward movement is stopped. After that, the outer member 70 retracts while supporting the hood panel 5, but as shown in FIG. 5, the enlarged lock ring 50 causes the inner peripheral surface of the extension portion 84 in the holder portion 80 of the outer member 70. The 84c slides and comes into contact with the stepped surface 75a of the enlarged diameter portion 75 of the outer member 70. At that time, the lock ring 50 abuts the upper surface side on the stepped surface 85a on the forward moving side and the backward moving side, that is, both the upper and lower sides of the outer member 70 along the axial center C0 of the actuator 21, and the lower surface side is the inner. The member 22 is brought into contact with the taper regulation surface 28a in the storage groove 28, and the diameter expansion direction is further regulated by the inner peripheral surface 84c of the extension portion 84 of the holder portion 80, and the diameter reduction direction is the taper regulation of the storage groove 28. It is regulated on the surface 28a. In other words, the lock ring 50 is restricted from moving up and down in a state where the deformation of the lock ring 50 in the direction orthogonal to the axis C0 of the actuator 21 is restricted. Therefore, the outer member 70 is locked at the position RP without moving backward, and the actuator 21 maintains the state in which the rear end 5a of the hood panel 5 is lifted without lowering.

As a result, the operated hood flip-up device U can support the rear end 5a of the hood panel 5 by securing a predetermined space S below, and then the pedestrian hits the vicinity of the rear end 5a of the hood panel 5. Even so, the rear end 5a of the hood panel 5 can be plastically deformed by a predetermined amount to absorb the kinetic energy of the pedestrian and protect the pedestrian.

Then, in the actuator 21 of the embodiment, the operating gas G generated from the gas generator 53 pushes the outer member 70 from the opening 25a end of the inner case 23 during operation, and advances the outer member 70 with respect to the inner member 22. When moving, the operating gas G presses the sealing material 62 toward the spacer 63, and the ceiling surface 64a of the ceiling wall portion 64 in contact with the sealing material of the spacer 63 is an insertion hole through which the lead wires 60 and 60 are inserted. Except for 69a and 69a, the inner case 23 is arranged so as to cover the entire inner peripheral side of the inner case 23 as a continuous integral surface, so that the sealing material is provided between the divided surfaces as in the conventional case. Therefore, the sealing material 62 is prevented from entering the spacer 63 side, which deteriorates the sealing performance, and the pressure of the operating gas G does not decrease.

Therefore, in the actuator 21 of the embodiment, it is possible to suppress a pressure drop of the operating gas G during operation.

In the embodiment, two insertion holes 69a through which the lead wire 60 provided in the ceiling wall portion 64 of the spacer 63 is inserted are arranged as circular openings corresponding to the lead wire 60. 2. The two lead wires 60 may be arranged side by side so that they can be inserted, and one ultracircular insertion hole may be provided.

Further, in the actuator 21 of the embodiment, the spacer 63 is provided with a guide recess 69b for guiding the lead wires 60, 60 extending from the connector 56 from the insertion holes 69a, 69a to the outside of the inner case, and is an integrally molded product made of synthetic resin. Is formed as.

Therefore, in the embodiment, the spacer 63 is not formed from the pair of divided bodies as in the conventional case, but is composed of one component of the integrally molded product, so that the number of components of the actuator 21 can be reduced. , The labor of assembly and parts management can be reduced. Regarding the handling of the lead wire 60, unlike the conventional structure of sandwiching and holding the lead wire 60 between a pair of divided bodies, the lead wire 60 is inserted into the guide recess 69b and the insertion hole 69a, which is seemingly troublesome. However, when the lead wire 60 is passed through the sealing material 62, the lead wire 60 may be handled remarkably because it may be inserted into the insertion hole 69a and the guide recess 69b of the spacer 63 at the same time. It doesn't make it complicated.

Further, in the actuator 21 of the embodiment, the inner case 23 includes a locking hole 40 penetrating from the inner peripheral surface side to the outer peripheral surface side, and the spacer 63 bends inward when inserted into the inner case 23. A locking claw 67, which slides on the inner peripheral surface 23b of the inner case 23 and is restored when placed in the locking hole 40 and is locked to the peripheral edge of the locking hole 40, is provided with the locking hole 40. The arrangement position with the locking claw 67 is set as a position where the spacer 63 is attached at a fixed position with respect to the inner case 23.

Therefore, in the embodiment, if the spacer 63 is inserted into the inner case 23, the locking claw 67 of the spacer 63 is bent, and if it is arranged in the locking hole 40 of the inner case 23, it is restored. Since the peripheral edge of the locking hole 40 is locked, the spacer 63 is attached to the inner case 23. The mounting completion position is such that the inner case 23 and the spacer 63 are set before the fitting (connector) 18 to be attached to the first connecting portion 14c is passed through the through holes (connecting holes) 38a and 66 between the inner case 23 and the spacer 63. Corresponds to the fixed position where the spacer 63 is attached to the inner case 23 so that the through holes (connecting holes) 38a and 66 match with the inner case 23, and when the spacer is attached to the inner case by a conventional rivet. In comparison, the spacer 63 can be easily attached to the inner case 23 by simply engaging the locking claw 67 with the locking hole 40.

Further, in the embodiment, the spacer 63 is made of synthetic resin and includes a lead-out portion 68 for projecting the lead wires 60 and 60 from the inner case 23, and the lead-out portion 68 has a fixed side piece 68a on the spacer 63 side. The fixed side piece 68a is provided with a movable side piece 68f connected via a hinge portion 68k made of an integral hinge. Then, when the fixed side piece 68a and the movable side piece 68f bend the hinge portion 68k to face the storage recesses 68c and 68h as the corresponding facing portions, the fixed side piece 68a and the movable side piece 68f can maintain the mutual facing state. From the insertion hole 69a side, the locking projection 68d and the locking hole 68i are provided as engaging portions to engage with the insertion holes, and the holding surfaces 68e and 68j of the storage recesses 68c and 68h as facing each other are used. It is configured so that the extending lead wires 60 and 60 can be sandwiched.

Therefore, in the embodiment, when the spacer 63 includes a lead-out portion 68 for projecting the lead wires 60 and 60 from the inner case 23, the spacer 63 is located at a portion (storage recess) 68c of the fixed side piece 68a facing the movable side piece 68f. After arranging the lead wires 60 and 60, the locking projection 68d as a mutual engaging portion and the locking hole portion 68i are engaged, and the movable side piece 68f is engaged with the fixed side piece 68a. For example, the lead wires 60 and 60 can be sandwiched between the holding surfaces 68e and 68j of the storage recesses 68c and 68h facing each other between the fixed side piece 68a and the movable side piece 68f. Therefore, after the lead wires 60 and 60 are sandwiched between the lead wires 68, the lead wires 68 are housed in the storage recess 42, and the spacer 63 is arranged inside the inner case 23, the lead wires 60 and 60 are arranged from the outside of the inner case 23. Even if the lead wires 60 and 60 are pulled, the lead wires 60 and 60 do not shift, and the lead wires 60 and 60 can be prevented from being broken on the connector 56 side.

In the embodiment, the spacer 63 is illustrated as one part of the integrally molded product, but as in the spacer 63A shown in FIG. 14, the columnar portion 65A below the ceiling wall portion 64 having the insertion hole 69a is a divided body. It may be composed of 65A1 and 65A2. These divided bodies 65A1 and 65A2 are made of synthetic resin such as polyamide and are provided with engaging claws 65d and engaging holes 65e that are engaged with each other, and the engaging claws 65d are engaged with the engaging holes 65e. Then, the divided bodies 65A1 and 65A2 can be connected to each other to form a spacer 63A having a ceiling wall portion 64 and a columnar portion 65A. The lead wire extends from the insertion hole 69a through the guide recess 69b and from the storage recesses 68m and 68m of the lead-out portion 68A formed by connecting the divided bodies 65A and 65A2 to each other. The lead-out unit 68A is formed by connecting the divided bodies 68A1 and 68A2 provided in the divided bodies 65A1 and 65A2, and each of the divided bodies 68A1 and 68A2 has a storage recess 68 m for accommodating the lead wire.

Further, even in this spacer 63A, the ceiling surface 64a of the ceiling wall portion 64 in contact with the sealing material of the spacer 63A is formed as a continuous integral surface shape except for the insertion holes 69a and 69a through which the lead wires 60 and 60 are inserted. Since it is arranged so as to cover the entire inner peripheral side of the inner case, the sealing material does not enter between the divided surfaces as in the conventional case, and therefore the sealing performance is deteriorated. The sealing material is prevented from entering the spacer 63A side, and the pressure of the working gas does not decrease.

Also in this spacer 63A, for example, a lead-out portion 68 composed of the fixed side piece 68a and the movable side piece 68f of the embodiment is arranged on the split body 65A1 side to form the lead-out portion of the split bodies 65A1 and 65A2. The divided bodies 68A1 and 68A2 may be omitted.

Further, in the actuator 21 of the embodiment, the case where the hood panel 5 is used for the flip-up device U is illustrated, but the headrest is divided into two parts in the front-rear direction and the front part of the headrest is moved forward when the vehicle is rear-end collision. A knee that connects the inner member and the outer member to the head protection device, the knee support panel in front of the seated driver, and the instrument panel hose on the body side, and moves the knee support panel backward in a head-on collision of the vehicle. The present invention may be used for the actuator of the protection device. Further, the actuator of the present invention is not limited to the embodiment as long as the gas generator is operated at a predetermined time to move the outer member relative to the inner member, and various automobile safety devices are used. Can be used for.

14c ... 1st connecting part, 15a ... 2nd connecting part, 18, 19 ... connecting tool, 21 ... actuator, 22 ... inner member, 23 ... inner case, 25a ... opening, 40 ... locking hole, 53 ... gas generator , 53d ... Terminal pin, 56 ... Connector, 60 ... Lead wire, 62 ... Sealing material, 63, 63A ... Spacer, 64 ... Ceiling wall, 64a ... Ceiling surface, 67 ... Locking claw, 68 ... Derived part, 68a ... Fixed side piece, 68c ... (opposite part) storage recess, 68d ... (engaging part) locking protrusion, 68e ... holding surface, 68f ... movable side piece, 68h ... (opposing part) storage recess, 68i ... (engaging part) ) Locking hole, 68j ... Holding surface, 68k ... Hinge, 69 ... Lead wire guide, 69a ... Insertion hole, 69b ... Guide recess, 70 ... Outer member, C0 ... (Actuator) axis, G ... Actuating gas.

Claims (4)

An inner member that is configured by storing a gas generator that generates operating gas during operation in an inner case and is connected to the first connecting portion.
The inner case is covered and connected to the second connecting portion, and the inner is separated from the first connecting portion and the second connecting portion by the pressure of the operating gas generated from the gas generator. An outer member that moves forward with respect to the member,
With
The inner member
From the end side of the inner case that discharges the working gas to the outer member side, in order.
With the gas generator
A connector into which a terminal pin for inputting an operation signal of the gas generator is fitted,
A substantially disk-shaped sealing material that penetrates the lead wire protruding from the connector and is pressed against the inner peripheral surface of the inner case.
A spacer disposed in the inner case so as to abut the sealing material and to project the lead wire out of the inner case.
In addition to being configured by arranging
On the end side of the inner case away from the open end, a connector connected to the first connecting portion is passed through the inner case and the spacer, and the spacer is fixed to the inner case. , An actuator having a configuration of being connected to the first connecting portion.
The spacer comprises a ceiling wall portion having a ceiling surface that abuts on the sealing material.
The ceiling surface of the ceiling wall portion opens an insertion hole through which the lead wire is inserted away from the outer peripheral edge of the ceiling surface, and the inner is formed as a continuous integral surface except for the insertion hole. An actuator characterized in that it is arranged so as to cover the entire area on the inner peripheral side of the case. 1. The spacer is formed as an integrally molded product made of synthetic resin, provided with a guide recess for guiding the lead wire extending from the connector to the outside of the inner case from the insertion hole. The actuator described in. The inner case includes a locking hole that penetrates from the inner peripheral surface side to the outer peripheral surface side.
When the spacer is inserted into the inner case, it bends inward and slides on the inner peripheral surface of the inner case, and when it is placed in the locking hole, it is restored and engages with the peripheral edge of the locking hole. With locking claws, which can be stopped,
1 or claim 1, wherein the arrangement position of the locking hole and the locking claw is set at a fixed position of the spacer with respect to the inner case, corresponding to a position where the spacer is attached. 2. The actuator according to 2. The spacer is made of synthetic resin and includes a lead-out portion for projecting the lead wire from the inner case.
The lead-out portion is configured to include a fixed side piece on the spacer side and a movable side piece connected to the fixed side piece via a hinge portion made of an integral hinge.
The fixed side piece and the movable side piece
When the hinge portions are bent to face each other's corresponding facing portions, they are provided with engaging portions that engage with each other so that the facing states can be maintained.
The actuator according to any one of claims 1 to 3, wherein the lead wires extending from the insertion hole side can be sandwiched between the facing portions of each other.

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