JP2014201880A - Locking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a locking device capable of reducing operation force in releasing a lock.SOLUTION: A locking device includes: a striker abutment member 201 provided to be movable on a hook 157, abutted to a striker 153, and fastening the striker 153 entering a groove 157a of the hook 157 in cooperation with the groove 157a of the hook 157; a chase member 203 provided to be movable on a pawl 161, abutted to the striker abutment member 201 when the hook 157 is positioned in a lock position, and chasing the striker abutment member 201 to the direction coming into abutment with the striker 153; and an energizing member 205 for energizing the chase member 203 to the direction coming into abutment with the striker abutment member 201.

Description

  The present invention relates to a locking device that is used in a vehicle or the like using a hook and a pole.

  An example of a conventional locking device will be described with reference to FIGS. FIG. 6 is a block diagram for explaining the unlocked state of the conventional locking device, and FIG. 7 is a block diagram for explaining the locked state of the conventional locking device.

  In these drawings, the base 1 provided on one of the fixed side (body side) on the moving side (for example, a seat, a door, a trunk lid, an engine hood, etc. provided rotatably with respect to the floor) Is formed with a groove 1a into which the striker 3 provided on the other of the moving side and the fixed side can enter.

A shaft 2 is provided on one side of the base 1 across the groove 1a, and a hook 7 is rotatably provided on the shaft 2.
A shaft 4 is rotatably provided on the other side of the base 1 across the groove 1a. A pole 9 is provided on the shaft 4, and the pole 9 and the shaft 4 rotate together.

The hook 7 has a groove 7a into which the striker 3 can enter. Further, the hook 7 is formed with a recess 7b.
On the other hand, the pole 9 has a convex portion 9 a that can be engaged with the concave portion 7 b of the hook 7.

  The hook 7 is urged in the unlock position direction (in the direction of the arrow UL in the figure) by the spring 11 with one end locked to the hook 7 and the other end locked to the pole 9. 9a is urged in a direction (in the drawing, arrow K direction) in which the concave portion 7b of the hook 7 is engaged.

A striker contact member 13 is rotatably provided on the shaft 2 of the hook 7.
On the base 1, a sub-base 31 having substantially the same shape as the base 1 is provided so as to sandwich the hook 7, the pole 9, the striker contact member 13, and the like. In this sub-base, a long hole 23 on an arc centering on the axis 4 of the pole 9 is formed.

  The shaft 4 of the pole 9 passes through a sub-plate (not shown) and protrudes to the outside. A protruding member 21 is provided at the protruding portion, and the pole 9, the shaft 4 and the driving member 21 rotate together.

  The driving member 21 has an arm portion 21 a extending in the direction of the long hole 23, and the arm portion 21 a is provided with a pin 25 that extends to the space between the base 1 and the sub base via the long hole 23.

  On the other hand, the striker contact member 13 is formed with an arm portion 13 a extending in the direction of the long hole 23 of the sub base 31. The striker abutting member 13 has an arm portion 13 a whose arm portion 13 a is an arm portion 21 a of the drive-in member 21 by a spring 15 whose one end is notched to the notch 31 a of the sub-base 31 and whose other end is locked to the striker abutting member 13. The pin 25 is urged in a direction in contact with the pin 25 provided on the head.

Next, the operation of the locking device having the above configuration will be described.
In the unlocked state shown in FIG. 6, the convex portion 9 a of the pole 9 abuts on the peripheral surface of the hook 7, and the hook 7 is prohibited from rotating in the unlock position direction. Further, the arm portion 13a of the striker abutting member 13 abuts on the pin 25 of the driving member 21 and prohibits further rotation of the striker abutting member 13.

  When the striker 3 pushes the surface near the opening of the groove 7 a of the hook 7, the hook 7 rotates in the lock position direction against the urging force of the spring 11. Then, the concave portion 7b of the hook 7 and the convex portion 9a of the pole 9 are engaged with each other, the rotation of the hook 7 in the unlocking direction is prohibited, and the striker 3 cannot be detached from the groove 7a of the hook 7 in FIG. It becomes the lock state shown.

  When the convex portion 9 a of the pole 9 engages with the concave portion 7 b of the hook 7, the driving member 21 rotates in the clockwise direction, and the pin 25 of the arm portion 21 a also rotates in the clockwise direction along the elongated hole 23. Following this, the striker abutting member 13 also rotates, the striker abutting member 13 abuts on the striker 3, and eliminates rattling between the striker 3 and the groove 7a of the hook 7.

  On the contrary, in order to unlock the locked state shown in FIG. 7, when the driving member 21 or the pole 9 is rotated in the direction opposite to the arrow K against the urging force of the spring 11, the convex portion 9 a of the pole 9 and the hook 7 When the engagement with the concave portion 7b is released, the hook 7 rotates to the unlock position where the striker 3 can enter the groove 7a by the biasing force of the spring 11, and when the rotational operation force to the pole 9 is released, 9 is in contact with a portion other than the recess 7a of the hook 7, and the unlocked state shown in FIG.

  As the driving member 21 rotates, the pin 25 pushes the arm portion 13a of the striker contact member 13, and the striker contact member 13 returns to the state shown in FIG. 6 (see, for example, Patent Document 1).

Japanese Patent No. 4952310

  In the lock device having such a configuration, the arm portion 13 a of the striker contact member 13 tends to rotate in a direction to contact the pin 25 of the drive-in member 21 by the urging force of the spring 15 at the time of locking. However, depending on the position of the striker 3 that has entered the groove 7 a of the hook 7, the striker contact member 13 contacts the striker 3 before contacting the pin 25, and the striker contact member 13 is prohibited from rotating. A gap may be generated between the arm portion 13 a of the contact member 13 and the pin 25.

  If a large impact is applied to the locking device in this state, the striker contact member 13 may rotate until the arm portion 13a of the striker contact member 13 contacts the pin 25, and the striker contact member 13 may be excessively bitten by the striker 3. . In this case, there is a problem that the operation force at the time of unlocking becomes excessively heavy.

  This invention is made | formed in view of the said problem, The subject is providing the locking device with small operation force at the time of lock release.

  In order to achieve at least one of the above-described problems, a locking device reflecting one aspect of the present invention includes a base, a groove provided on the base, into which a striker can enter, and the striker A hook that is rotatable from an unlock position that can enter the groove to a lock position that prohibits the striker from being removed from the groove, and a hook that is biased toward the unlock position, and is rotatably provided on the base. The hook is prohibited from rotating by engaging with the hook located at the lock position, and a pole urged in a direction to engage with the hook is movably provided on the hook. A striker abutting member that abuts and strikes the striker that has entered the groove of the hook in cooperation with the groove of the hook, and is movably provided on the pole; When the hook is positioned at the lock position, the striker abuts against the striker abutment member, and the striker abutment member that abuts the striker abutment against the striker, and the abutment member abuts against the striker abutment member. And an urging member for urging.

  Other features of the present invention will become more apparent from the following detailed description and accompanying drawings.

According to the present invention, the urging member urges the driving member so that no gap is generated in the contact portion between the driving member and the striker contact member.
Therefore, the striker contact member and the striker are not excessively bitten, and the operation force when unlocking is reduced.

  Other effects of the present invention will become more apparent from the following detailed description and accompanying drawings.

It is a disassembled perspective view of the locking device of an embodiment. FIG. 2 is a perspective view seen from the direction of an arrow II when a member other than the sub plate of the locking device shown in FIG. 1 is assembled. It is the perspective view seen from the direction of arrow III when the subplate of the locking device shown in FIG. 1 is assembled. It is a top view explaining the unlocked state (full open) of the locking device of FIG. It is a top view explaining the locked state of the locking device of FIG. It is a block diagram explaining the unlocked state of the conventional locking device. It is a block diagram explaining the locked state of the conventional locking device.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of the locking device of the embodiment, FIG. 2 is a perspective view seen from the direction of arrow II when a portion other than the sub plate of the locking device shown in FIG. 1 is assembled, and FIG. 3 is a perspective view of the locking device shown in FIG. FIG. 4 is a plan view illustrating the unlocked state (full open) of the locking device of FIG. 1, and FIG. 5 is the locked state of the locking device of FIG. FIG.

  Initially, the structure of the locking device of this embodiment is demonstrated using FIGS. 1-3. In these drawings, a base 151 provided on one of a fixed side (body side) on a moving side (for example, a seat, a door, a trunk lid, an engine hood, etc. provided rotatably with respect to a floor). A groove 151a into which a striker 153 provided on the other of the moving side and the fixed side can enter is formed.

  On one side of the base 151 with the groove 151a in between, a hook 157, a striker contact member 201, and one end side of the sub-plate 301 are stacked from the base 151 side. A through hole 157 h, a hole 201 h, and a hole 301 h are formed on one end side of the hook 157, the striker contact member 201, and the sub plate 301. Further, the base 151 is also formed with a hole 151h penetrating therethrough. The diameter of the hole 151h is set to be substantially the same as the diameter of the hole 157h of the hook 157, the diameter of the hole 201h of the striker contact member 201, and the diameter of the hole 301h of the sub plate 301.

  A bush 145 is provided on one surface side of the base 151. The bush 145 is formed in the cylindrical portion 145a inserted in the order of the hole 301h of the sub plate 301, the hole 201h of the striker contact member 201, the hole 157h of the hook 157, and the hole 151h of the base 151, and the base of the cylindrical portion 145a. The mounting portion 145b is in contact with the peripheral edge of the hole 301h of the sub plate 301. The outer diameter of the cylindrical portion 145a is set to be slightly smaller than the diameter of the hole 301h of the sub plate 301, the diameter of the hole 201h of the striker contact member 201, the diameter of the hole 157h of the hook 157, and the diameter of the hole 151h of the base 151. Has been. The tip of the cylindrical portion 145a that is inserted through the hole 151h of the base 151 and protrudes to the other surface side of the base 151 is caulked. For this reason, the hook 157 and the striker contact member 201 are rotatable with respect to the base 151. Further, the sub-plate 301 sandwiches the striker abutting member 201 with the base 151 along the bush 145 that is the rotation axis of the hook 157.

  A protrusion 157l is formed on the surface of the hook 157 facing the striker contact member 201, and a long hole 201l into which the protrusion 157l is loosely fitted is formed on the surface of the striker contact member 201 facing the hook 157. Is formed. Therefore, when the hook 157 rotates and the protrusion 157 l of the hook 157 contacts the wall surface of the elongated hole 201 l of the striker contact member 201, the hook 157 and the striker contact member 201 rotate integrally. It has become.

In this embodiment, the position of the hook 157 shown in FIG. 4 is called an unlock position, and the position of the hook 157 shown in FIG. 5 is called a lock position.
On the other side of the base 151, the pole 161, the driving member 203, and the other end side of the sub-plate 301 are stacked on the other side of the base 151 with the groove 151a interposed therebetween. A through-hole 161h, a hole 203h, and a hole 301i are formed on the other end side of the pole 161, the driving member 203, and the sub-plate 301. Further, the base 151 is also formed with a hole 151 i penetrating therethrough. The diameter of the hole 151 i is set to be substantially the same as the diameter of the hole 161 h of the pole 161, the diameter of the hole 203 h of the driving member 203, and the diameter of the hole 301 i of the sub plate 301.

  A bush 147 is provided on one surface side of the base 151. The bush 147 is formed at the base portion of the cylindrical portion 147a and the cylindrical portion 147a inserted in the order of the hole 301i of the sub plate 301, the hole 203h of the driving member 203, the hole 161h of the pole 161, and the hole 151i of the base 151. The mounting portion 147b is in contact with the peripheral portion of the 301 hole 301i. The outer diameter of the cylindrical portion 147a is set to be slightly smaller than the diameter of the hole 301i of the sub plate 301, the diameter of the hole 203h of the driving member 203, the diameter of the hole 161h of the pole 161, and the diameter of the hole 151i of the base 151. Yes. The tip of the cylindrical portion 147a that passes through the hole 151i of the base 151 and protrudes to the other surface side of the base 151 is caulked. For this reason, the pole 161 and the driving member 203 are rotatable with respect to the base 151. Further, the sub-plate 301 sandwiches the contact portion between the drive-in member 203 and the striker contact member 201 with the base 151 along the bush 147 that is the rotation shaft of the pole 161.

  Further, a protrusion 161 l is formed on the surface of the pole 161 facing the driving member 203, and an elongated hole 203 l into which the protrusion 161 l is loosely fitted is formed on the surface of the driving member 203 facing the pole 161. . Therefore, if the pole 61 rotates and the protrusion 161 l of the pole 161 contacts the wall surface of the elongated hole 203 l of the driving member 203, the pole 161 and the driving member 203 rotate together.

  The hook 157 has a groove 157a into which the striker 153 can enter. In addition, a first convex portion 157b and a second convex portion 157c are formed on the peripheral portion of the hook 157 along the rotation direction of the hook 157 to the unlock position, and the first convex portion 157b and the second convex portion 157c. Is formed with a recess 157d that decreases in width toward the back.

  On the surface of the pole 161 facing the hook 157, a convex portion 161a that can be engaged and disengaged with the concave portion 157d of the hook 157 is formed. Further, a concave portion 161b into which the second convex portion 157c of the hook 157 can enter is formed on the surface of the pole 161 facing the hook 157.

  A spring (spiral spring) 171 is provided between the base 151 and the hook 157. The inner end of the spring 171 is locked to the first protrusion 151 b of the base 151, and the outer end is locked to the protrusion 157 e of the hook 157. The hook 157 is biased in the unlock position direction (arrow UL in FIG. 4).

  A spring (spiral spring) 173 is provided between the base 151 and the pole 161. The inner end of the spring 173 is locked to the fourth protrusion 151e of the base 151, and the outer end is locked to the protrusion 161e of the pole 161. The spring 173 urges the pole 161 in a direction to engage the hook 157 (in the direction of arrow E in FIG. 4).

  The striker contact member 201 has a striker contact portion 201b that sandwiches the striker 153 that has entered the groove 157a of the hook 157 in cooperation with the wall surface of the groove 157a of the hook 157. Further, a contacted portion 201c with which a driving member 203 described later contacts is formed at a portion facing the striker contact portion 201b.

  The driving member 203 is formed with a contact portion 203c that can contact the contacted portion 201c of the striker contact member 201. The contact portion 203c contacts the contacted portion 201c of the striker contact member 201, so that the striker contact member 201 is driven in a direction to contact the striker 153.

  The pushing member 203 abuts against the contacted portion 201c of the striker abutting member 201 by a spring 205 having one end engaged with the base 151 and the other end engaged with the pushing member 203. Is biased in the direction.

  In addition, the hook 157 of this embodiment includes a cored bar 157m and a resin 157p formed on the surface of the cored bar 157m by, for example, an extrusion molding method. A resin 157p is formed on at least a portion of the hook 157 where the striker contact member 201 moves.

  One end portion side of the sub plate 301 sandwiches the striker abutting member 201 with the base 151 along the bush 145 that is the rotation shaft of the hook 157, and the other end portion side of the sub plate 301 has the striker member 203 and the striker contact. The contact portion with the contact member 201 also has a “heavy” shape (bent shape) so as to be sandwiched between the base 151 along the bush 147 that is the rotation axis of the pole 161.

Next, the operation of the above configuration will be described.
(When changing from unlocked to locked)
In the unlocked state shown in FIG. 4, the protrusion 157e of the hook 157 urged in the unlocking direction by the urging force of the spring 171 contacts the protrusion provided on the base 151b. One protrusion 157b is in contact with the lower portion of the pole 161 urged in a direction to engage with the hook 157 by the urging force of the spring 173. For this reason, further rotational movement of the hook 157 in the unlocking direction and rotational movement of the pole 161 in the direction of engaging with the hook 157 are prohibited.

In this state, the contact portion 203 c of the driving member 203 is at a position separated from the contacted portion 201 c of the striker contact member 201.
When the striker 153 pushes the surface 157n near the opening of the groove 157a of the hook 157, the hook 157 rotates in the lock position direction against the urging force of the spring 171.

  When the hook 157 rotates to the locked position, as shown in FIG. 5, the concave portion 157d of the hook 157 and the convex portion 161a of the pole 161 engage with each other, and the rotation of the hook 157 in the unlocking direction is prohibited, and the striker 153 Is locked when it cannot be removed from the groove 157 a of the hook 157.

At this time, due to the biasing force of the spring 205, the contact portion 203 c of the driving member 203 contacts the contacted portion 201 c of the striker contact member 201, and the striker contact portion 201 b of the striker contact member 201 is brought into contact with the striker 153. Drive in the direction of contact. The striker abutting portion 201b of the striker abutting member 201 abuts on the striker 153 and is sandwiched in cooperation with the wall surface of the groove 157a of the hook 157, thereby eliminating the rattling between the striker 153 and the groove 157a of the hook 157.
(When changing from locked to unlocked)
To release the lock in the locked state shown in FIG. 5, the pole 161 is rotated in the direction of the opposite arrow E against the urging force of the spring 173. Then, the pole 161 is separated from the hook 157, the engagement between the concave portion 157d of the hook 157 and the convex portion 161a of the pole 161 is released, and the hook 157 is rotated in the unlock position direction by the biasing force of the spring 171. The striker 153 as shown in FIG. 4 enters an unlocked state in which it can be detached from the groove 157a of the hook 157. Further, with the rotation of the pole 161 in the counter arrow E direction, the driving member 203 also rotates in the counter arrow E direction with a delay, and the contact of the contact portion 203c with the contacted portion 201c is also released.

According to the above configuration, the following effects can be obtained.
(1) The spring 205 biases the driving member 203 so that no gap is generated in the contact portion between the driving member 203 and the striker contact member 201.

Therefore, the striker contact member 201 and the striker 153 are not excessively bitten, and the operation force at the time of unlocking does not become excessively heavy but becomes small.
(2) The sub-plate 301 holds the striker contact member 201 even when a large force is applied to the striker contact member 201 by sandwiching the striker contact member 201 with the base 151 along the bush 145 that is the rotation shaft of the hook 157. The member 201 does not incline with respect to the bushing 145 that is the rotation shaft, and a smooth contact of the striker contact member 201 with the striker 153 and a contact of the driving member 203 with the striker contact member 201 are obtained.

 (3) A large force acts on the striker contact member 201 when the subplate is sandwiched between the contact portion between the drive-in member 203 and the striker contact member 201 along the bush 151 that is the rotation axis of the pole 161. Even so, the striker contact member 201 does not tilt with respect to the bush 147 that is the rotation shaft, and (2) the striker contact of the striker contact member 201 to the striker 153 and the striker contact of the driving member 203 are smoother. Contact with the member 201 is obtained.

 (4) Since the resin 157p is formed on at least a portion of the hook 157 where the striker contact member 201 moves, the metal contact between the hook 157 and the striker contact member 201 is eliminated, and abnormal noise due to the metal contact is generated. Does not occur.

In addition, this invention is not limited to the said embodiment. The following modifications may be possible.
(1) In the above embodiment, the protrusion 157l is provided on the hook 157, and the elongated hole 201l in which the protrusion 157l is loosely fitted is provided in the striker contact member 201. Conversely, the protrusion is provided on the striker contact member 201. It is also possible to provide a long hole in which the protrusion is loosely fitted in the hook 157.

 (2) In the above embodiment, the protrusion 161 l is provided on the pole 161, and the elongated hole 203 l in which the protrusion 161 l is loosely fitted is provided on the driving member 203. Conversely, the protrusion 161 is provided on the driving member 203, and the pole 161 An elongated hole into which the protrusion is loosely fitted may be provided.

 (3) The shape of the long hole 201l and the long hole 203l is not limited as long as the protrusion is loosely fitted.

151 Base 153 Striker 157 Hook 157a Groove 161 Pole 171, 173 Spring 201 Striker contact member 203 Drive-in member 205 Spring 301 Sub-plate

Claims (4)

Base and
A groove is provided on the base and into which a striker can enter, and the striker can rotate from an unlock position where the striker can enter the groove to a lock position where the striker is prohibited from being removed from the groove. A hook biased toward the locking position;
A pole that is rotatably provided on the base, and prohibits rotation of the hook by engaging with the hook located at the lock position, and a pole biased in a direction to engage with the hook;
A striker abutting member that is movably provided on the hook, abuts against the striker, and sandwiches the striker that has entered the groove of the hook in cooperation with the groove of the hook;
A push-in member that is movably provided on the pole and abuts against the striker abutting member when the hook is located at a locked position, and drives the striker abutting member in a direction to abut against the striker;
A biasing member that biases the drive-in member in a direction to contact the striker contact member;
A locking device comprising:   The locking device according to claim 1, wherein a sub plate is provided along the rotation axis of the hook to sandwich the striker contact member with the base. The sub-plate is
The locking device according to claim 2, wherein a contact portion between the driving member and the striker contact member is sandwiched between the base and the base. The hook is
Consists of a cored bar and a resin formed on the surface of the cored bar,
The locking device according to any one of claims 1 to 3, wherein the resin is formed on at least a portion of the hook where the striker contact member moves.

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