JP2010120409A - Hood lock structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hood lock structure capable of suppressing reaction acting on a collision body also when the collision body abuts on the vicinity of the immediately upper part of a striker in a hood and displacement amount of the collision body is large. <P>SOLUTION: Each of a striker front part 40A and a striker rear part 40B constituting the striker 40 is mounted at the hood 14 side. When locked parts 46A and 46B of the striker front part 40A and the striker rear part 40B receive the reaction of a prescribed value or larger from a lock mechanism 32 side when a load F to a hood lower side in relation to the hood 14 is inputted, the striker front part 40A and the striker rear part 40B are made to oscillate in directions (arrow A direction and arrow B direction) in which the locked parts 46A and 46B sides are separated from each other. At a prescribed time in this case, each mounting part 42A and 42B of the striker front part 40A and the striker rear part 40B is slipped from claws 52A and 52B of a patch 50. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a hood lock portion structure including a lock unit and a striker.

In the hood lock portion structure, the lock means provided on the vehicle body skeleton member is engaged with the striker attached to the hood inner panel side when the hood is closed (see, for example, Patent Document 1). Also, the vehicle hood assumes the case where a collision body abuts when the hood is closed, and the height position of the hood outer panel in the hood closed state with respect to the components in the engine room is set. Stroke (deformable stroke) is secured.
JP 2004-67006 A

  However, for example, in the case where the colliding body is in contact with the vicinity of the striker in the hood and the moving speed at the time of contact is higher than the presumed moving speed, the colliding body exceeds the preliminarily assumed deformation stroke. When trying to move, there is a possibility that the reaction force acting on the collision body by the highly rigid striker and the locking portion of the lock becomes large, and there is room for improvement in this respect.

  In consideration of the above facts, the present invention provides a hood lock portion structure capable of suppressing a reaction force acting on a collision body even when the collision body is in contact with the striker in the vicinity of the striker in the hood and the displacement amount of the collision body is large. Is the purpose.

  The hood lock part structure of the present invention described in claim 1 is provided on the vehicle body side, and is provided with a lock means provided for locking the hood to the vehicle body side, and a first striker component attached to the hood side. And a striker used for locking the locking means, and the first striker component and the second striker component are respectively attached to the hood side. A mounting portion, a leg portion extending from the mounting portion toward the locking means, and a bend from the tip of the leg portion so as to incline toward the upper side of the hood toward each other. And a locked portion to which the locking means is locked when the hood is closed, and when the load is input to the hood below the hood, the locked portion is the locking means. From the side Wherein there is a swingable direction of separating each other engaged portion when subjected to the reaction force of the above values.

  According to the hood lock portion structure of the present invention described in claim 1, the lock means provided on the vehicle body side is provided for locking the hood to the vehicle body side. On the other hand, the first striker component and the second striker component are respectively attached to the hood to constitute a striker, which is provided for locking the locking means. In the first striker component and the second striker component, the leg portions are extended from the respective attachment portions toward the locking means side, and the locked portions are bent from the distal ends of the leg portions to approach each other. It extends so that it may incline to the hood upper side toward the direction, and a locking means is locked to these locked portions when the hood is closed.

  Here, when the locked portion receives a reaction force of a predetermined value or more from the lock means side when a load is applied to the hood below the hood, the first force is applied by the component force acting on the inclined locked portion. The one striker component and the second striker component are swingable in a direction that separates the locked portions from each other with the mounting portion on the hood as a fulcrum. For this reason, for example, when a collision body abuts directly above the striker in the hood and the displacement of the collision body is large, the load is supported by the locking means via the striker by releasing the engagement between the striker and the locking means. Is eliminated, and the reaction force acting on the collision object is suppressed.

  According to a second aspect of the present invention, there is provided the hood lock portion structure according to the first aspect, wherein the first striker component and the second striker component are mounted on the hood side to which the first striker component and the second striker component are attached. Is formed in a concave shape to hold the mounting portions of the first striker component and the second striker component on a concave surface, and with respect to the first striker component and the second striker component A holding portion that allows the mounting portions of the first striker component and the second striker component to come out when a load of a predetermined value or more is applied in a direction in which the locked portions are separated from each other. Is formed.

  According to the hood lock part structure of the present invention described in claim 2, each mounting part of the first striker component and the second striker component is a concave surface of the holding part of the mounted body disposed on the hood side. Is held in. Here, when a load of a predetermined value or more is applied to the first striker component and the second striker component in the direction in which the locked portions are separated from each other, the first striker component and the second striker component Each attachment part of the part is allowed to come out from the open side of the holding part.

  For this reason, when the load is input to the hood lower side with respect to the hood, the locked portion receives a reaction force of a predetermined value or more from the lock means side, and the locked portion side with respect to the first striker component and the second striker component When a load greater than or equal to a predetermined value is applied in a direction in which the hoods are separated from each other, the first striker component and the second striker component are disengaged from the hood-side attachment body, so that the hood is more easily deformed.

  As described above, according to the hood lock structure according to the first aspect of the present invention, even when the collision body contacts the vicinity of the striker in the hood and the displacement of the collision body is large, It has the outstanding effect that the reaction force which acts can be suppressed.

  According to the hood lock part structure of the second aspect, the reaction force acting on the collision body can be more effectively suppressed even when the collision body abuts immediately above the striker in the hood and the displacement amount of the collision body is large. It has an excellent effect of being able to.

(Configuration of the embodiment)
A hood lock structure according to an embodiment of the present invention will be described with reference to FIGS. In these drawings, an arrow FR appropriately shown indicates the vehicle front side, and an arrow UP indicates the vehicle upper side. In the closed state of the hood, the front side of the hood is the same direction as the front side of the vehicle, and the upper side of the hood is the same direction as the upper side of the vehicle.

  As shown in FIG. 1, a hood (engine hood) 14 that covers the engine room 12 in an openable and closable manner is disposed in the vehicle front portion 10. A hinge (not shown) is disposed at the rear end portion of the hood 14 in the vehicle front-rear direction, so that the hood 14 can be rotationally moved around an axis in the vehicle width direction of the hinge (not shown). It can be opened and closed.

  FIG. 2 is an enlarged cross-sectional view taken along line 2-2 in FIG. As shown in FIG. 2, the outer plate of the hood 14 is constituted by a hood outer panel 16. The hood outer panel 16 extends substantially along the vehicle front-rear direction. A hood inner panel 18 is disposed below the hood outer panel 16 on the hood lower side. The hood inner panel 18 constitutes an inner plate of the hood 14. The front end edge 16A of the hood outer panel 16 and the front end edge 18A of the hood inner panel 18 are coupled by hemming.

  In this embodiment, the hood outer panel 16 and the hood inner panel 18 are both elements that are grasped as “metal plates” in the broad sense, and other metals such as steel plates in addition to the aluminum alloy plates. A plate may be applied.) Is formed by press molding. Thus, weight reduction of the hood 14 is achieved by applying an aluminum alloy plate to the hood 14.

  The hood inner panel 18 is provided with a front curved portion 18B continuously from the front end edge portion 18A. The front curved portion 18B is formed so as to be curved in a convex shape generally upward of the hood. Further, a bottom wall portion 18C extending substantially in the hood front-rear direction is continuously provided at the rear end of the front curved portion 18B in the hood front-rear direction. Further, the rear end of the bottom wall portion 18C in the hood front-rear direction is continuously provided with a rising portion 18D that rises in the direction approaching the hood outer panel 16 substantially toward the rear of the hood. Although not shown, a skeleton (not shown) extending substantially along the hood outer panel 16 is continuously provided at the rear end of the rising portion 18D in the hood front-rear direction.

  Between the hood outer panel 16 and the hood inner panel 18, in order to suppress deformation of the hood outer panel 16 when the hood 14 is closed, it is also referred to as “dent reinforcement 22” (“dent reinforcement”). This is an element grasped as a “reinforcing member” and extends in the hood width direction (direction perpendicular to the paper surface of FIG. 2 (direction of arrow W in FIG. 1)). The dental reinforcement 22 is a plate formed of an aluminum alloy plate (which is an element grasped as a “metal plate” in a broad sense, and other metal plates such as a steel plate may be applied in addition to the aluminum alloy plate). The hood outer panel 16 extends substantially along the hood outer panel 16 and is joined to the hood outer panel 16 via the mastic 23.

  A hood lock portion 30 is disposed corresponding to the center portion of the front end portion 14A of the closed hood 14 in the hood width direction (the same direction as the vehicle width direction). The hood lock portion 30 is a structural portion for restraining the hood 14 in a closed state, and is a lock mechanism portion 32 (a lock mechanism portion 32 (as a lock means) disposed on the radiator support upper 28 side as a vehicle body skeleton member in the engine room 12. A hood lock device) and a striker 40 (a “lock striker”) disposed on the hood 14 side (the hood inner panel 18 side) can also be engaged with a latch 36 constituting a part of the lock mechanism portion 32. ) And.

  The lock mechanism portion 32 provided on the vehicle body side is provided for locking the hood 14 to the vehicle body side, and includes a plate-like base body 34 arranged with the plate thickness direction as the vehicle front-rear direction. Although not shown, the base body 34 is attached to the radiator support upper 28 via an attachment bracket (not shown). At the center in the width direction of the base body 34 (the center in the direction along the vehicle width direction), there is a cutout 34A that opens at the upper end of the base body 34 and is formed in the longitudinal direction substantially along the vehicle vertical direction. 34 is formed penetrating in the thickness direction. This notch 34A is used for insertion of the lower end portion of the striker 40 (a locked portion 46A to be described in detail later).

  A latch 36 (also referred to as “lock member”) is attached to the base body 34. The base end side of the latch 36 is supported by the base main body 34 so as to be rotatable around an axis 32X in the vehicle front-rear direction. That is, the latch 36 is movable between a normal position (position shown in FIG. 2) which is an arrangement position in a state where the hood 14 is locked to the vehicle body, and a retracted position retracted from the normal position. In normal times, they are arranged at a normal position by a biasing means (not shown).

  The free end side of the latch 36 is a substantially C-shaped locking portion. When the latch 36 is disposed at the normal position with the hood 14 closed, the lower end portion (details) of the striker 40 is described in detail. It arrange | positions in the position which hold | maintains the to-be-latched part 46A, 46B) mentioned later inside a substantially C shape, and is preventing the striker 40 from escaping upwards. Note that the lock mechanism 32 can move the latch 36 to the retracted position by a release mechanism (not shown).

  A through hole 20 is formed through the bottom wall portion 18 </ b> C of the hood inner panel 18 at a position on the vehicle upper side of the lock mechanism portion 32 in the closed state of the hood 14. A striker 40 is inserted into the through hole 20 from above the hood. The striker 40 is also referred to as a lock reinforcement 24 (“rock reinforcement” or “strike reinforcement”) through a patch 50 (also referred to as “base plate”) for fixing a striker as an attached body. Is supported by the lower wall portion 24A. The patch 50 is made of a steel plate and is fastened to the lock reinforcement 24 by a fastener (not shown).

  The lock reinforcement 24 is disposed between the hood outer panel 16 and the hood inner panel 18 for reinforcement at the front end portion 14A of the hood 14, and is an element grasped as an aluminum alloy plate (in the broad sense, a "metal plate"). In addition to the alloy plate, other metal plates such as steel plates may be applied.) And extend along the hood width direction (direction perpendicular to the paper surface of FIG. 2). Yes. The lock reinforcement 24 includes a lower wall portion 24A disposed on the bottom wall portion 18C of the hood inner panel 18, and the lower wall portion 24A of the lock reinforcement 24 and the bottom wall portion 18C of the hood inner panel 18 are connected to each other. They are joined by welding. A through hole 26 through which the striker 40 is inserted is formed through the central portion of the lower wall portion 24A in the hood width direction. The striker 40 is inserted through the large diameter portion of the through hole 26 on the back side of the drawing in the drawing.

  The lower wall portion 24A is bent in the vicinity of the center portion of the bottom wall portion 18C of the hood inner panel 18 in the vehicle front-rear direction. A rear wall portion 24 </ b> B is formed in a step shape from the bent portion toward the rear of the hood so as to extend to the side closer to the hood outer panel 16. In the present embodiment, the rear wall portion 24B is configured by joining two plate materials. Further, the upper end side of the rear wall portion 24 </ b> B in the hood vertical direction is a rear terminal portion 24 </ b> C bent substantially to the rear side of the hood, and the rear terminal portion 24 </ b> C is joined to the dental reinforcement 22.

  The striker 40 supported on the lower wall portion 24A side of the lock reinforcement 24 is used for locking the latch 36 in the lock mechanism portion 32, and the attachment portion 42A (base end portion) is attached to the patch 50 (hood 14 side). The striker front part 40A as the first striker constituent part and the striker rear part 40B as the second striker constituent part in which the attachment part 42B (base end part) is attached to the patch 50 (hood 14 side) are configured. . The structure for attaching the striker front part 40A and the striker rear part 40B to the patch 50 will be described in detail later. The striker front part 40A and the striker rear part 40B are arranged side by side in the hood front-rear direction, protrude toward the hood lower side with respect to the hood inner panel 18, and a high-strength steel material with a round bar shape is bent by a bending machine. Thus, each has a bent shape (substantially V-shaped) in which the upper side of the hood is opened in a side view of the vehicle. That is, the striker 40 is substantially W-shaped when viewed from the side of the vehicle.

  The striker front portion 40A includes a leg portion 44A (sometimes referred to as an “arm portion”) that extends from the attachment portion 42A on the hood 14 side toward the lock mechanism portion 32 side. The leg portion 44 </ b> A is slightly inclined toward the rear side of the hood toward the lower side of the hood 14. The striker front portion 40A is formed with a locked portion 46A (a striker bottom side portion) that is bent and extended from the tip of the leg portion 44A. The engaged portion 46A extends so as to incline toward the upper side of the hood toward the approaching direction toward the striker rear portion 40B, and makes the angle of the bent portion formed between the leg portion 44A and the acute angle. 14 is closed when the latch 36 of the lock mechanism 32 is engaged.

  The striker front portion 40A provided with the locked portion 46A has a reaction force (reaction force (reaction force (locking force)) when the locked portion 46A receives a load from the lock mechanism portion 32 side when a load is applied to the hood 14 below the hood 14. The direction of the input load) is indicated by an arrow f.) The direction in which the locked portion 46A side is separated from the locked portion 46B (detailed later) side of the striker rear portion 40B (arrow A direction) (See FIG. 4).

  On the other hand, the striker rear portion 40B includes a leg portion 44B (sometimes referred to as an “arm portion”) that extends from the attachment portion 42B on the hood 14 side toward the lock mechanism portion 32 side. The leg portion 44B is slightly inclined toward the front side of the hood toward the lower side of the hood 14. The striker rear portion 40B is formed with a locked portion 46B (a striker bottom side portion) that is bent and extended from the tip of the leg portion 44B. The locked portion 46B extends so as to incline toward the upper side of the hood toward the approaching direction to the striker front portion 40A side, and the angle of the bent portion formed between the leg portion 44B is an acute angle, The latch 36 of the lock mechanism 32 is locked when the hood 14 is closed.

  The striker rear portion 40B provided with the locked portion 46B is a reaction force of the locked portion 46B from the lock mechanism portion 32 side when the load is input to the hood 14 below the hood 14 (see the direction of arrow f). When it receives, it can rock | fluctuate in the direction (arrow B direction) which separates the to-be-latched part 46B side with respect to the to-be-latched part 46A side of the striker front part 40A (refer FIG. 4).

  Here, the attachment structure to the patch 50 of the striker front part 40A and the striker rear part 40B will be described. As shown in FIG. 3, the mounting portion 42A of the striker front portion 40A is bent from the end of the leg portion 44A opposite to the locked portion 46A and extends to one side in the hood width direction. The mounting portion 42B of the striker rear portion 40B is bent from the end of the leg portion 44B opposite to the locked portion 46B and extends to the other side in the hood width direction. The attachment portions 42A and 42B extending in the direction away from each other in this way are the claw portions 52A and 52B as the holding portions of the patch 50 (elements grasped as “striker support portions” in a broad sense). It is welded to the concave surfaces 53A and 53B.

  The front claw portion 52A of the patch 50 is formed by cutting and raising a part of the front portion of the patch 50 to form an arc shape (concave shape). The attachment portion 42A of the striker front portion 40A is generally disposed on the front side of the hood and It hold | maintains at the concave-surface 53A in the state coat | covered from the food | hood upper side. In other words, in the patch 50, a slit-shaped cutout 54A is formed between the cut-and-raised tip of the front claw 52A and the general surface of the patch 50. An opening 56A is formed.

  Further, the rear claw portion 52B of the patch 50 is formed by cutting and raising a part of the rear portion of the patch 50 to form an arc shape (concave shape), and the mounting portion 42B of the striker rear portion 40B is generally disposed on the rear side of the hood. And it hold | maintains at the concave surface 53B in the state coat | covered from the food | hood upper side. In other words, a slit-like cutout 54B is formed between the cut-and-raised tip of the rear claw portion 52B and the general surface of the patch 50 in the patch 50, whereby the claw portion 52B has a hood front side. An opening 56B is formed in the upper part.

  With such a configuration, when a load of a predetermined value or more is applied to the striker front portion 40A and the striker rear portion 40B in a direction in which the locked portions 46A and 46B are separated from each other, the striker front portion 40A and the striker rear portion 40B The attachment portions 42A and 42B are allowed to be pulled out from the open portions 56A and 56B (setting of the wear-through mode).

(Operation of the embodiment)
Next, the operation and effect of the above embodiment will be described.

  As shown in FIG. 2, the striker front part 40A and the striker rear part 40B constituting the striker 40 are each attached to the hood 14 side, bent from the tips of the respective leg parts 44A, 44B, and approaching each other. And the latch 36 of the lock mechanism 32 is latched to the latched portions 46A and 46B when the hood 14 is closed. The

  Here, when the load F is input to the hood 14 on the lower side of the hood, the locked portions 46A and 46B receive a reaction force from the base body 34 or the latch 36 side of the lock mechanism portion 32. When the reaction force (transmission load, see arrow f direction) at this time is equal to or greater than a predetermined value, the striker front part 40A and the striker rear part 40B are applied to the hood 14 by the component force acting on the inclined locked parts 46A and 46B. As shown in FIG. 4, it can swing in the escape direction (arrow A direction and arrow B direction) that separates the locked portions 46A, 46B from each other with the attachment portions 42A, 42B side as the fulcrum. , It is opened and divided by swinging (rotation) and divided.

  For this reason, for example, when the collision body (impactor) 60 is in contact with the hood 14 in the vicinity of the striker 40 and the displacement amount of the collision body 60 is large, the engagement between the striker 40 and the latch 36 of the lock mechanism section 32. By stopping the release (restraint release of the hood 14), the load supporting state by the lock mechanism portion 32 via the striker 40 is eliminated, and the reaction force acting on the collision body 60 can be suppressed because the hood 14 can be freely deformed to some extent. That is, even if the collision body 60 is displaced beyond the deformation stroke of the hood 14 assumed in advance, it is possible to avoid an increase in impact on the collision body 60 due to the contact between the highly rigid striker 40 and the lock mechanism portion 32. The amount of shock absorption by the hood 14 can also be increased.

  Further, as shown in FIG. 2, the attachment portions 42A and 42B of the striker front portion 40A and the striker rear portion 40B are formed on the concave surfaces 53A and 53B of the claw portions 52A and 52B of the patch 50 disposed on the hood 14 side. Is retained. Here, when a load of a predetermined value or more acts in a direction (arrow A direction and arrow B direction) in which the locked portions 46A and 46B are separated from the striker front portion 40A and the striker rear portion 40B, As shown in FIG. 4, the attachment portions 42A and 42B of the striker front portion 40A and the striker rear portion 40B are allowed to slip out (scrap out) from the open portions 56A and 56B.

  That is, when the attachment portions 42A and 42B are displaced toward the opening portions 56A and 56B with the swing of the striker front portion 40A and the striker rear portion 40B and are about to be detached from the claw portions 52A and 52B, the claw portions 52A and 52B are notched. The portions 54A and 54B are plastically deformed (opened) so as to be spread by the attachment portions 42A and 42B, and the attachment portions 42A and 42B come out of the claw portions 52A and 52B (in FIG. 4, the attachment portions 42A and 42B (The escape direction (the escape direction) is indicated by the arrow C direction and the arrow D direction.)

  For this reason, when the load F to the hood 14 shown in FIG. 2 is input to the hood lower side, the locked portions 46A and 46B are caused to react with a reaction force (arrow) greater than a predetermined value from the base body 34 or the latch 36 side of the lock mechanism portion 32 When a load of a predetermined value or more acts in a direction (arrow A direction and arrow B direction) in which the locked portions 46A and 46B are separated from the striker front portion 40A and the striker rear portion 40B. 4, since the striker front part 40A and the striker rear part 40B are disengaged from the claw parts 52A and 52B of the patch 50 on the hood 14 side, the hood 14 is more easily displaced. As a result, the hood inner panel 18 comes into contact with the radiator support upper 28, and the hood 14 is further deformed to absorb the impact.

  As described above, according to the hood lock structure according to the present embodiment, even when the collision body 60 contacts the vicinity of the striker 40 in the hood 14 and the amount of displacement of the collision body 60 is large, The acting reaction force can be suppressed.

(Supplementary explanation of the embodiment)
In the above embodiment, the attachment portion 42A, 42B side comes out of the claw portions 52A, 52B in the patch 50 on the hood 14 side to which the attachment portions 42A, 42B of the striker front portion 40A and the striker rear portion 40B are attached. Opening portions 56A and 56B for allowing are formed, and such a configuration is more preferable from the viewpoint of suppressing a reaction force acting on the collision body 60, but the first striker component and the second striker component It is good also as a structure by which such an open part is not formed in the side in which each attaching part is attached.

  Further, in the above embodiment, the attachment portions 42A and 42B of the striker front portion 40A and the striker rear portion 40B are welded to the concave surfaces 53A and 53B side of the claw portions 52A and 52B of the patch 50, but for example, before the striker The attachment portions (42A, 42B) of the portion (40A) and the striker rear portion (40B) are held without being welded to the concave surface (53A, 53B) side of the claw portions (52A, 52B) of the patch (50). It may be a configuration.

  Further, in the above embodiment, the claw portions 52A and 52B cut and raised in the patch 50 hold the attachment portions 42A and 42B of the striker front portion 40A and the striker rear portion 40B on the concave surfaces 53A and 53B. The holding portion that holds the attachment portions of the striker component and the second striker component is substantially the same as the claw portions (52A, 52B), for example, by welding a member having an arcuate cross section on the patch (50). The other holding part which makes each component part and hold | maintains each attachment part (42A, 42B) to a concave surface may be sufficient.

  Furthermore, in the above-described embodiment, the striker 40 has a structure in which the striker front part 40A and the striker rear part 40B are arranged side by side in the hood front-rear direction. Other strikers such as a structure in which the one striker component and the second striker component are arranged side by side in the hood width direction may be used.

1 is a perspective view showing a vehicle front portion to which a hood lock portion structure according to an embodiment of the present invention is applied. It is an expanded sectional view along line 2-2 in FIG. It is a perspective view which shows the attachment structure to the patch of the striker in the hood lock part structure which concerns on one Embodiment of this invention. In the hood lock part structure concerning one embodiment of the present invention, it is a sectional side view showing the state where the collision object contacted the hood.

Explanation of symbols

14 Hood 30 Hood lock part 32 Lock mechanism part (locking means)
40 striker 40A striker front (first striker component)
40B striker rear (second striker component)
42A mounting portion 42B mounting portion 44A leg portion 44B leg portion 46A locked portion 46B locked portion 50 patch (attached body)
52A Claw part (holding part)
52B Claw part (holding part)
53A Concave surface 53B Concave surface

Claims (2)

Locking means provided on the vehicle body side and used for locking the hood to the vehicle body side;
A striker that is configured by a first striker component and a second striker component that are each attached to the hood side, and that is used for locking the locking means;
The first striker component and the second striker component are
An attachment part attached to each of the hoods;
Leg portions respectively extending from the mounting portion toward the lock means;
A locked portion that is bent from the tip of the leg portion and extends toward the upper side of the hood toward each other's approach direction, and the locking means is locked when the hood is closed;
And when the locked portion receives a reaction force of a predetermined value or more from the locking means side when a load is input to the hood below the hood, the direction in which the locked portion sides are separated from each other Hood lock part structure that can swing to   The attached body to which the first striker component and the second striker component are attached disposed on the hood side is formed in a concave shape, and the first striker component and the second striker component When each mounting portion is held on a concave surface and a load of a predetermined value or more is applied in a direction in which the locked portion side is separated from the first striker component and the second striker component The hood lock part structure according to claim 1, wherein a holding part that allows the attachment parts of the first striker constituent part and the second striker constituent part to come out is formed.

Images