JP5147587B2 - Locking device - Google Patents

Description

  The present invention relates to a lock device that can be optimally used for, for example, a glove box that can be opened and closed on an instrument panel side of an automobile.

  This type of conventional locking device was developed as a side lock of a glove box as described in Patent Document 1 below, and is located in a recess defined in the design surface of the glove box body. An operation handle that opens and closes the box body, a support frame that rotatably supports the operation handle and is screwed to a mounting wall that extends in the recess, a pair of left and right slide pins, A pair of left and right cam members that urge the slide pins to move forward and backward, two springs that urge the left and right slide pins in the direction of the lock holes formed on the instrument panel side, and the cam members that are mounted on the cam members An O-ring that exerts a braking force is provided.

  When assembling such a locking device, a state in which an O-ring is mounted in a mounting groove formed on the outer periphery of each cam member is obtained, and left and right are inserted into a pair of cylindrical portions provided on the back side of the operation handle. After inserting the spring and cam member and assembling the operation handle to the support frame, the support frame is screwed to the mounting wall extending in the recess of the glove box body in this state, and finally If a pair of left and right slide pins are individually connected to each cam member inserted in the cylindrical portion of the operation handle, the lock device is assembled.

  Therefore, although this is used for actual use, when the operating handle is not operated to swing, the pair of left and right slide pins are extended by the biasing spring pressure of the spring, and the glove box body Since the through hole formed in the side surface of the instrument panel is engaged with the lock hole of the instrument panel, the glove box body is locked in the closed state.

  In order to release such a locked state, when the operation handle is grasped and pulled up, the convex portion formed in each cylindrical portion interlocked with the swing of the operation handle moves along the cam groove of the cam member. Thus, since the cam member is pulled into the cylindrical portion, the tip end portion of each slide pin is retracted from the lock hole of the instrument panel, and the glove box body is allowed to rotate in the opening direction.

  At this time, when the operator releases his / her hand from the operation handle, the restraint between the convex portion of the cylindrical portion that rotates in conjunction with this and the cam groove is released, and the operation handle is moved in the reverse direction by the spring pressure of the spring. At the same time as swinging with a sudden momentum, the slide pin also receives the biasing spring pressure of the spring and tries to protrude in the direction of the lock hole with a sudden momentum. Since the O-ring is in sliding contact between the inner surface of the member and the outer surface of the cam member, the operating handle slowly swings in the non-operating position direction by the braking force of the O-ring, thereby restricting the protruding amount of the slide pin. Stoppers do not collide strongly. As a result, generation of loud collision noise is suppressed.

  Conversely, when closing the opened glove box body, the glove box body is rotated in the closing direction. At this time, the tip of each slide pin protruding in the lock hole direction is the instrument panel. The tip of each slide pin passes through while retreating linearly, and finally enters the lock hole of the instrument panel with the biasing spring pressure of the spring. Therefore, this locks the closed state described above.

In this case, since the convex portion of the cylindrical portion moves linearly in the cam groove and the cam member is drawn into the cylindrical portion, when the slide pin is engaged with the lock hole, this time, the slide The pin receives the biasing spring pressure of the spring and tries to protrude toward the lock hole with a sudden force. Similarly, the O-ring is in sliding contact between the inner surface of the cylindrical portion of the operation handle and the outer periphery of the cam member. The cam member slowly moves in the direction of the lock hole in the cylindrical portion by the braking force of the O-ring, so that the stoppers that restrict the protruding amount do not collide strongly. Therefore, also in this case, there is no possibility of generating a loud collision sound.
Japanese Patent No. 4077391

  Therefore, in the conventional locking device, since a braking O-ring is mounted on the outer periphery of the cam member, it is possible to suppress the generation of a loud collision sound when the glove box body is opened and closed. As a result, there is no concern that the locking device will be damaged, causing the operator to feel uneasy, distrustful or uncomfortable. However, when the O-ring is mounted on the outer periphery of the cam member, the outer periphery of the cam member Since the concave mounting groove has to be formed in the mounting groove, the thickness of the mounting groove portion is reduced, and accordingly, the rigidity of the cam member itself is lowered. When the thickness of the cam member is increased in order to prevent this decrease in rigidity, the cam member naturally becomes large, and the lock device itself must be enlarged.

  The present invention was developed in order to effectively solve the problems of such a conventional locking device. The invention according to claim 1 is a locking device that locks the opening / closing movement of an opening / closing member attached to a support. An operation handle for opening and closing the opening / closing body, a housing fixed to the opening / closing body, a lock member movably held in the internal space of the housing, and urging the lock member in a protruding direction The housing has a guide groove communicating with its own internal space, and the locking member has a mounting protrusion fitted on the side surface of the lock member, and the mounting protrusion has a braking groove. The O-ring is stretched over in a pulled state, and has a stopper mechanism that regulates the protruding amount of the lock member.

  According to a second aspect of the present invention, on the premise of the first aspect, a pair of restricting protrusions are provided on both sides of the mounting protrusion in the stroke direction of the lock member.

  The invention described in claim 3 is based on the premise of claim 2 and is characterized in that the thickness of the restricting protrusion is larger than the thickness of the mounting protrusion.

  Therefore, even in the first aspect of the invention, when the lock member moves in the internal space of the housing, the mounting projection that spans the O-ring moves in the same direction in the guide groove in conjunction with this. Therefore, it is possible to effectively suppress the locking member from slowly moving and the stopper mechanisms colliding with a rapid force by the braking force obtained from the sliding contact with the guide groove of the O-ring. Therefore, unlike the conventional case, there is no fear of causing the operator to feel uneasy, distrustful or uncomfortable due to the occurrence of a loud collision sound, which may cause the device to be damaged.

  Moreover, in the invention described in claim 1, since the O-ring is stretched over the mounting protrusion provided on the side surface of the lock member, there is no need to form a mounting groove as in the prior art. It can be mounted regardless of the rigidity and size of the member, and the locking device itself can be expected to be downsized, and the O-ring is stretched over the mounting protrusion, so that the guide groove Even when slidably contacted with each other, a change in cross section hardly occurs, and a high braking force can be exhibited with a small O-ring. In addition, there is no fear of inadvertent dropping from the mounting protrusion.

  In the invention of claim 2, since the pair of restricting protrusions are provided on both sides of the mounting protrusion in the stroke direction of the lock member, when the lock member moves in the internal space of the housing, the O-ring It is possible to always provide a stable braking force by restricting deformation.

  In the invention of claim 3, the mounting protrusion that spans the O-ring is inevitably thinner, but the pair of regulating protrusions provided on both sides of the mounting protrusion is thicker than the mounting protrusion. Since the position of the mounting projection relative to the guide groove of the housing can be maintained, a stable braking force can be ensured.

  The present invention presupposes a locking device that locks the opening / closing movement of an opening / closing body attached to a support body, an operation handle for opening / closing the opening / closing body, a housing fixed to the opening / closing body, and an internal space of the housing A locking member that is movably held in the housing, and a spring that biases the locking member in the protruding direction, the housing forms a guide groove that communicates with its internal space, and the locking member is provided on its side surface. By providing a mounting projection that fits into the guide groove and overhanging the braking O-ring on the mounting projection while being pulled, a stopper mechanism that restricts the protruding amount of the lock member is provided, thereby providing a large collision. It is intended to actively reduce the size of the lock device itself while suppressing the generation of sound.

  Hereinafter, the present invention will be described in detail with reference to each preferred embodiment. The locking device according to the first embodiment was developed as a center lock of a glove box, as shown in FIGS. An operation handle 1 for opening and closing a glove box body as an opening / closing body, a housing 2 fixed to the glove box body, a lock member 3 held in an internal space 6 of the housing 2 so as to be movable up and down, A spring 4 that urges the lock member 3 in the upward projecting direction and an O-ring 5 that is mounted on the lock member 3 side and exhibits a braking force to be described later are provided.

  As shown in the figure, the operation handle 1 is provided with a relatively long operation arm 7 that presses a bottom surface 3b of a lock member 3 to be described later at the center of the upper end of the back surface, and also described later on both sides of the operation arm 7. A pair of bearing portions 8 that engage the shaft portion 13 of the housing 2 are provided, and a rib wall 9 that constitutes a stopper mechanism in cooperation with the front portion of the housing 2 is provided below the bearing portion 8 and the operating arm 7. The rib wall 9 is placed horizontally and brought into contact with a corresponding portion on the front side of the housing 2, thereby restricting the upward protrusion amount of the lock member 3.

  As shown in the figure, the housing 2 defines an internal space 6 whose front side is open in the vertical direction of the center portion, and holds the lock member 3 in the internal space 6 so as to be movable up and down. The operating arm 7 of the operating handle 1 is received from the open front surface of the space 6, a pair of guide grooves 10 communicating with the internal space 6 are continuously formed on both sides of the internal space 6, and on the upper back side. The surrounding wall 11 that surrounds the striker 18 provided on the instrument panel side as a support member in cooperation with the lock member 3 is integrally extended, and the lower end portion of the spring 4 is supported on the bottom surface of the internal space 6. The boss 12 is erected. In addition, a pair of shaft portions 13 that engage with the bearing portions 8 of the operation handle 1 are projected from the front surface side.

  As shown in the drawing, the locking member 3 has a shape with a front side opened and a tapered shape 3a on the upper side of the back side, and a thin mounting protrusion that is stretched over the O-ring 5 on one side thereof. 14 and a pair of thick restricting protrusions 15 are provided on both upper and lower sides of the mounting protrusion 14 at regular intervals, and the presence of the restricting protrusions 15 on both upper and lower sides makes it possible to It is configured to restrict deformation of the O-ring 5 during movement. Further, the rail projection 16 having the same thickness as the regulation projection 15 is provided on the other side surface so as to be movable in the guide groove 10 on the housing 2 side. Therefore, the lock member 3 is fitted in the guide groove 10 corresponding to the restriction protrusion 15 and the mounting protrusion 14 on one side, and is fitted in the guide groove 10 corresponding to the rail protrusion 16 on the other side. Thus, the inside of the internal space 6 of the housing 2 can be moved up and down without being rattled. Furthermore, the receiving part 17 which receives the upper end part of the spring 4 shall be formed in the back lower part. The operation arm 7 of the operation handle 1 is in contact with the bottom surface 3b of the lock member 3.

  Therefore, when assembling the lock device having such a configuration, as shown in FIG. 3, the guides of the upper and lower restricting projections 15 are obtained, and the O-ring 5 is pulled by the mounting projection 14 of the lock member 3. And then, with the spring 4 interposed, the restricting projection 15 and the mounting projection 14 provided on one side of the lock member 3 are caused to face the corresponding guide groove 10 of the housing 2 and at the same time While the rail projection 16 provided on the side faces the guide groove 10 of the corresponding housing 2, the lock member 3 itself is inserted into the internal space 6 of the housing 2, while the shaft portion 13 of the housing 2 is inserted into the operation handle 1. When the operating arm 7 of the operating handle 1 is inserted from the open front side of the internal space 6 by engaging with the bearing portion 8, the operating arm 7 comes into contact with the bottom surface 3 b of the lock member 3. As shown, the locking member 3 without deviating omission upward, so that the locking device itself is assembled easily. Therefore, after that, if the housing 2 is fixed to the glove box body side, it can be used.

  In a state where the operation handle 1 is not operated to swing, the rib wall 9 of the operation handle 1 comes into contact with the corresponding front surface portion of the housing 2 as shown in FIG. Since they are regulated, the striker 18 is surrounded by the lock member 3 and the surrounding wall 11 of the housing 2, and thereby the glove box body (not shown) is locked in the closed state.

  In order to release such a locked state, when the operating handle 1 is grasped and pulled up, the operating arm 7 of the operating handle 1 is locked against the biasing spring pressure of the spring 4 as shown in FIG. Since the bottom surface 3b of the member 3 is pressed downward and the lock member 3 is lowered, the surrounding state with respect to the striker 18 is thereby released and the glove box body is allowed to rotate in the opening direction.

  At this time, when the operator releases his / her hand from the operation handle 1, the lowering state of the lock member 3 is released in conjunction with this, and the lock member 3 is rapidly moved upward by the biasing spring pressure of the spring 4. At the same time, the operation handle 1 also swings accordingly, and tries to bring its own rib wall 9 into contact with the front portion of the housing 2 with a rapid force. In this case, FIG. As shown in FIG. 8, the O-ring 5 extends along the side wall of the guide groove 10 because the mounting protrusion 14 of the lock member 3 on which the O-ring 5 is mounted is fitted in the guide groove 10 of the housing 2. Therefore, the locking member 3 is slowly lifted by the braking force of the O-ring 5 and the operation handle 1 is also slowly swung in the non-operation position direction. A strong collision with the front part of the housing 2 Since there is no, this result, generation of a large collision noise is effectively suppressed.

  In addition, since the O-ring 5 is stretched over the mounting protrusion 14 in a pulled state, there is no risk that the O-ring 5 will inadvertently drop off when the mounting protrusion 14 moves up and down in the guide groove 10, and the restriction protrusion 15. Since the wall thickness is thicker than the mounting protrusion 14, stable movement of the housing 2 with respect to the guide groove 10 can be ensured.

  On the contrary, when closing the opened glove box body, the glove box body is rotated in the closing direction. At this time, the tapered shape 3a of the lock member 3 abuts against the striker 18 to lock the glove box body. After the member 3 itself is lowered and allowed to pass through the striker 18, it is raised again by the biasing spring pressure of the spring 4, and the striker 18 is surrounded by the lock member 3 and the surrounding wall 11 of the housing 2. Thus, this locks the closed state described above.

  In this case, if the lock member 3 tries to rise rapidly, the bottom surface 3b of the lock member 3 collides with the operation arm 7 of the operation handle 1 with rapid force. Since the O-ring 5 is mounted, the locking member 3 is slowly raised by the braking force of the O-ring 5 so that the stoppers that regulate the protruding amount of the locking member 3 do not collide strongly. Therefore, at this time, there is no possibility of generating a loud collision sound.

  Therefore, in the first embodiment, unlike the conventional locking device, the O-ring 5 is stretched over the mounting protrusion 14 provided on the side surface of the locking member 3, so that the rigidity and size of the locking member 3 are increased. In spite of this, the locking device itself can be greatly reduced in size, and the O-ring 5 is stretched over the mounting projection 14 so that it may fall off the mounting projection 14. Is completely eliminated. In the first embodiment, one mounting protrusion 14 for mounting the O-ring 5 is provided on one side surface of the lock member 3. However, when a large braking force is required, it is provided on the other side surface. It is also possible to provide a similar mounting protrusion 14 and restricting protrusion 15 so that two O-rings 5 are used.

  Next, the locking device according to the second embodiment will be described. Unlike the first embodiment, the second embodiment was developed as a side lock of a glove box, as shown in FIG. The housing 2 is fixed to the glove box body, the disk-like rotor 19 is rotatably supported by the housing 2, and the inner space 6 of the housing 2 is interlocked with the rotation of the rotor 19. A pair of left and right lock members 3A and 3B that move forward and backward, a single spring 4 that urges each lock member 3A and 3B in the forward direction, and one lock member 3A that is connected to one of the lock panels 3A and formed on the instrument panel side. The slide pin 20 engaged with the lock hole, the operation handle 1 for forcibly retracting the other lock member 3B that also functions as the slide pin, and the operation handle 1 A key cylinder 21 kicked, and has a configuration and a O-ring 5 to exert a braking force is mounted on one of the locking member 3 side.

  In the second embodiment, as shown in FIG. 10, the thin mounting protrusion 14 hangs on one side of the lock member 3 </ b> A with the O-ring 5 pulled on one side. And a pair of thick restricting protrusions 15 are provided on both the left and right sides of the mounting protrusion 14 in the stroke direction of the one lock member 3A with a certain interval. A configuration is adopted in which the guide groove 10 in which the protrusion 15 and the mounting protrusion 14 are movably fitted is formed in a state of communicating with the internal space 6.

  Therefore, even in the second embodiment, when the glove box body is unlocked and the operator releases his / her hand from the operation handle 1, the lock members 3 </ b> A and 3 </ b> B are biased by the spring force of the spring 4. The slide pin 20 moves forward with a rapid force and tries to protrude toward the lock hole with a rapid force. At this time, the mounting protrusion 14 of the lock member 3A on which the O-ring 5 is mounted is formed on the housing 2. Since the O-ring 5 is fitted in the guide groove 10 and slides along the side wall of the guide groove 10, the locking members 3 </ b> A and 3 </ b> B are slowly advanced by the braking force of the O-ring 5. Since there is no fear that the stoppers that regulate the protrusion amount will strongly collide with each other, generation of a loud collision sound is also suppressed.

  On the contrary, when closing the opened glove box body, the glove box body is rotated in the closing direction. At this time, the taper shape of the slide pin 20 connected to one lock member 3A is used. 22 and the taper shape 23 formed directly on the other lock member 3B abuts against the edge of the corresponding lock hole, and the lock members 3A and 3B themselves are temporarily retracted into the internal space 6 of the housing 2. After that, the spring moves forward with the biasing spring pressure of the spring. However, if each of the lock members 3A and 3B tries to move forward rapidly with the biasing spring pressure of the spring 4, the O-ring 5 is attached at this time. Since the mounting protrusion 14 of the locking member 3 is fitted in the guide groove 10 of the housing 2, the O-ring 5 slides along the side wall of the guide groove 10. In the braking force of the ring 5, the locking member 3 is advanced slowly, since it is unnecessary to stop each other to regulate the amount of projection collides strongly again, generation of a large collision noise is suppressed.

  Accordingly, even in the second embodiment, unlike the conventional locking device, the O-ring 5 is stretched over the mounting protrusion 14 provided on the locking member 3A, so that the rigidity and size of the locking member 3A are not affected. Since the mounting is possible, the locking device itself can be greatly reduced in size, and the O-ring 5 is stretched over the mounting projection 14 so that there is no fear of falling off the mounting projection 14. That is why it disappears. In the second embodiment, the mounting protrusion 14 for mounting the O-ring 5 is provided on the lock member 3A side. However, when a large braking force is required, the lock member 3A is provided on the other lock member 3B side. It is also possible to provide a similar mounting protrusion 14 and restricting protrusion 15 so that two O-rings 5 are used.

  In the locking device according to the present invention, the device itself can be miniaturized because the braking O-ring is stretched over the mounting protrusion provided on the locking member, and the device itself can be downsized. If it is used as a center lock or side lock of a glove box or the like that is attached to the ment panel so as to be openable and closable, it is suitable.

It is a disassembled perspective view which shows the locking device which concerns on 1st Example of this invention from the back side. It is a disassembled perspective view which shows the lock device from the front side. It is a perspective view which shows the state which mounted | wore the lock member with the O-ring. It is a perspective view which shows the state which assembled the locking device from the back side. It is sectional drawing which shows the obstruction | occlusion state of a glove box main body. It is sectional drawing which shows the open state of a glove box main body. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is a disassembled perspective view which shows the locking device which concerns on a 2nd Example from the front side. It is a principal part perspective view which shows the relationship between a mounting | wearing protrusion and a guide groove.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Operation handle 2 Housing 3 Lock member 3a Tapered shape 3b Bottom surface 3A Lock member 3B Lock member 4 Spring 5 O-ring 6 Internal space 7 Operation arm 8 Bearing part 9 Rib wall 10 Guide groove 11 Enclosure wall 12 Boss 13 Shaft part 14 Mounting protrusion 15 Restriction projection 16 Rail projection 17 Receiving portion 18 Striker 19 Rotor 20 Slide pin 21 Key cylinder 22 Taper shape 23 Taper shape

Claims (3)

  A locking device for locking the opening / closing movement of an opening / closing body attached to a support body, an operation handle for opening / closing the opening / closing body, a housing fixed to the opening / closing body, and movable in an internal space of the housing A lock member to be held, and a spring that urges the lock member in the protruding direction, the housing forms a guide groove communicating with its own internal space, and the lock member has a guide groove on its side surface. A locking device comprising: a mounting projection to be fitted, and a stopper mechanism for restricting a protruding amount of the lock member while the O-ring is stretched over the mounting projection while being pulled.   The locking device according to claim 1, wherein a pair of regulating protrusions are provided on both sides of the mounting protrusion in the stroke direction of the locking member.   3. The locking device according to claim 2, wherein the thickness of the restricting protrusion is thicker than the thickness of the mounting protrusion.

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