JP2005127020A - Locking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a locking device capable of effectively suppressing occurrence of collision sound. <P>SOLUTION: This locking device has a support body provided with a storage space, a lid body supported turnably on the support body and blocking the storage space, a slide pin 3 supported movably on the lid body to engage with and disengage from the support body, a spring member 5 energizing the slide pin 3 and locked in the support body, an operation handle 1 supported on the lid body so as to swing and releasing locking of the slide pin 3, and movement conversion mechanisms 7, 20 converting swing of the operation handle 1 to travel of the slide pin 3. This locking device has an outer side cylindrical member 6 provided continuously with either of the operation handle 1 and the slide pin 3, an inner side cylindrical member 4b provided continuously with the other of them and fitted into the outer side cylindrical member 6 so as to move concentrically, and an O-ring 24 coming into slide-contact with the outer side cylindrical member 6 and the inner side cylindrical member 4b simultaneously. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a locking device used in, for example, a glove box that is pivotally supported on the instrument panel side of an automobile.

  Although this type of conventional locking device is not specifically shown, a pair of inner cylindrical members formed with cam grooves on the glove box body side are movably provided, and each inner cylindrical member is formed on an instrument panel. A pair of slide pins for entering and exiting the lock hole are connected in series, and a compression coil spring is installed between each inner cylindrical member to urge the left and right slide pins into the lock hole. An outer arc member that fits the inner cylindrical member concentrically on the handle side and a pair of convex portions that move along the groove edge of the cam groove are provided (for example, see Patent Document 1).

  In the closed state of the glove box body, the tip of the left and right slide pins is engaged in the lock hole on the instrument panel side because the convex portion on the operation handle side is positioned inside the corresponding cam groove. The glove box body is locked in its closed position, but when releasing the locked state and opening the glove box body, the operation handle is swung. When the convex portion on the side is shifted to the outside of the cam groove of the inner cylindrical member, the left and right inner cylindrical members move toward each other against the biasing spring pressure of the compression coil spring, and the tip of each slide pin Since the part is retracted from the lock hole, it is possible to move the glove box body in the opening direction.

  Another locking device is provided integrally with a pair of outer cylindrical members formed with cam grooves on the operation handle side, and has convex portions that move along the groove edges of the cam grooves in the outer cylindrical members. The inner cylindrical members are fitted concentrically, and slide pins for entering and exiting the lock holes formed in the instrument panel are connected to the inner cylindrical members, and the slide pins are inserted into the outer cylindrical members. A configuration is provided in which a compression coil spring that is constantly urged in a direction to be engaged with the lock hole is mounted (see, for example, Patent Document 2).

When the glove box body is closed, the protrusions on the inner cylindrical member side are located outside the cam groove, so that the tip portions of the left and right slide pins are engaged in the lock holes on the instrument panel side. Then, the glove box body is locked in its closed position. When the glove box body is released by releasing this locked state, the inner cylindrical member is now operated by swinging the operation handle. When the convex portion on the side is moved to the inside of the cam groove of the outer cylindrical member, the left and right inner cylindrical members move toward each other against the biasing spring pressure of the compression coil spring, and the tip of each slide pin Since the part is retracted from the lock hole, it is possible to move the glove box body in the opening direction.
US Pat. No. 4,781,407 Japanese Patent Laid-Open No. 2003-13647

Therefore, in the conventional lock device, the swinging motion of the operation handle can be converted into the linear motion, and the tip of the slide pin can be retracted from the lock hole on the instrument panel side. Under such a structure, after the glove box body is in the open state, when the operator releases his hand from the operation handle, the restraint state between the convex portion and the cam groove is released, and the slide pin becomes the compression coil spring. Since it will project in the direction of the lock hole with a sudden force under the urging spring pressure, there is a possibility that the stoppers that regulate the projection amount will collide with each other and generate a loud collision sound. . For this reason, the collision sound reminds of the damage of the apparatus, giving the operator anxiety, distrust or discomfort.
Such a fear may also occur when the glove box body in the open state is closed and the slide pin is engaged with the lock hole.

  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 support body including a storage space, and is rotatable to the support body. A lid that is pivotally supported to close the storage space, a slide pin that is movably supported by the lid and is engaged with and disengaged from the support, and a spring member that urges the slide pin to engage the support. In a lock device having an operation handle that is pivotally supported by a lid so as to unlock the slide pin, and a motion conversion mechanism that converts the swing of the operation handle into the movement of the slide pin, An outer cylindrical member connected to one of the slide pins, an inner cylindrical member connected to the other and movably fitted to the outer cylindrical member, and the outer cylindrical member and the inner cylindrical member simultaneously. Has an O-ring in sliding contact It is characterized in.

  According to a second aspect of the present invention, on the premise of the first aspect, the inner cylindrical member is provided with a storage groove for mounting an O-ring.

  According to a third aspect of the invention, on the premise of the second aspect, the storage groove has a concave shape for isolating the O-ring.

  According to a fourth aspect of the present invention, on the premise of the second aspect, the motion conversion mechanism includes a cam groove formed on the inner cylindrical member side, and a convex portion formed on the outer cylindrical member side and moving in the cam groove. The O-ring storage groove communicates with the cam groove.

  According to a fifth aspect of the present invention, on the premise of the first aspect, the outer cylindrical member has a bottom, and the motion conversion mechanism includes a cam groove formed in either the inner cylindrical member or the outer cylindrical member, and the other And the convex portion and the cam groove are located in a space sealed by an O-ring.

  Therefore, even in the invention according to claim 1, for example, when the operator releases the operation handle after the storage body is opened, the restraint state by the motion conversion mechanism is released, and the inner side Along with the cylindrical member, the slide pin receives an urging spring pressure and tries to protrude toward the support body with a sudden force. At this time, the O-ring is in sliding contact with the outer cylindrical member and the inner cylindrical member at the same time. Since a braking force is applied to the relative movement of the cylindrical member and the outer cylindrical member, it is possible to suppress the occurrence of a large collision noise due to collision between the stoppers that regulate the amount of protrusion. In addition, the use of an O-ring as a means for exerting a braking force is economical because it can be selected from standard products, and it is possible to absorb dimensional variations between the outer cylindrical member and the inner cylindrical member. Become.

  In the invention according to claim 2, since the O-ring can be mounted in the storage groove, the support of the O-ring is ensured. In the invention according to claim 3, since the storage groove has a concave shape for isolating the O-ring, the O-ring is more reliably supported, and even if the O-ring is broken, it enters other places. There is nothing. In the invention according to claim 4, since the motion conversion mechanism is composed of a cam groove and a convex portion, and the O-ring storage groove communicates with the cam groove, the motion conversion mechanism itself can be downsized. It becomes. In the invention according to claim 5, since the cam groove and the convex portion constituting the motion conversion mechanism are sealed by the O-ring and exist in the space, the generation of the collision sound can be more effectively suppressed.

  The present invention is based on the premise of a locking device that biases the slide pin in the direction of the support body by the biasing spring pressure of the spring member. It is intended to suppress the generation of collision sound that gives

  Hereinafter, the present invention will be described in detail based on preferred embodiments illustrated in the drawings. The lock device according to the first embodiment is developed as a side lock device of a glove box that is attached to an instrument panel of an automobile so as to be opened and closed. Therefore, it is assumed that the glove box body is pivotally supported in a space in the instrument panel.

  As shown in FIG. 1, the locking device according to the first embodiment includes an operation handle 1 in a recess defined in the design surface of the glove box body, and controls the opening and closing of the glove box body. A support frame 2 that supports the handle 1 in a swingable manner and is screwed to a mounting wall that extends in the recess, a pair of left and right slide pins 3, and a right and left that promotes forward and backward movement of the left and right slide pins 3 A pair of cam members 4, two compression coil springs 5 as spring members for urging the left and right slide pins 3 in the direction of a lock hole formed on the instrument panel side, and the cam member 4 side are mounted. The structure includes an O-ring 24 that exhibits a braking force, which will be described later.

  As shown in FIG. 2, the operation handle 1 is integrally formed with a pair of cylindrical portions 6, which are bottomed outer cylindrical members for individually accommodating the cam member 4 and the compression coil spring 5 on the left and right sides. A pair of first convex portions 7 that move in the cam grooves 20 of the cam member 4 described later and one second convex portion 8 that is received in the lock groove 21 are formed on the inner surface of each cylindrical portion 6. However, when forming each of the columnar convex portions 7 and 8, a slit 9 is provided in the longitudinal direction of each cylindrical portion 6, and the first convex portion is formed on the inner surface of the cylindrical portion 6 facing the slit 9. The second convex portion 8 which is shorter and narrower than the first convex portion 8 is formed, and the first convex portion 7 is formed on the inner peripheral opening edge side of the slit 9, and the cylindrical portion 6 facing the first convex portion 7. The other 1st convex part 7 is formed in the inner surface. The pair of first protrusions 7 has a longer and thicker shape than the second protrusions 8 described above, and the first protrusions 7 and the cam grooves 20 are cooperative as will be described later. Thus, a motion conversion mechanism that converts the swing motion of the operation handle 1 into the linear motion of the slide pin 3 is configured.

  In particular, in the first embodiment, the adoption of the above-described configuration for the operation handle 1 is provided with a semi-cylindrical shape that forms a half of one cylindrical first convex portion 7 on the periphery of the slit 9. Accordingly, the first mold having a cross section of the contour shape of the slit 9 is moved in a direction intersecting the inner surface of the cylindrical portion 6, and the cross section is the contour shape of the inner surface of the cylindrical portion 6 and is semicircular at the end surface The second mold having a convex portion and a semicircular groove in the ridge line portion is moved in the axial direction of the cylindrical portion 6 so that the semicircular shape of the first die and the semicircular shape of the second die When the portions are engaged, a cylindrical groove is defined on the inner surface of the cylindrical portion 6 by the first die and the second die, and one first convex portion 7 is formed by the cylindrical groove. Thus, the cylindrical portion 6 and the first convex portion 7 can be formed at the same time.

  Further, since the other first convex portion 7 is located at an opposite position on the inner surface of the cylindrical portion 6, a semicircular groove constituting half of the other first convex portion 7 is provided on the end surface of the first mold, By providing a semicircular groove at a position symmetrical to the central axis of the cylindrical portion 6 of the ridge line portion of the second mold, the semicircular shape of the first mold and the semicircular convex portion of the second mold Since the two circular grooves can be formed at opposite positions of the cylindrical portion 6 when the two are engaged, the other first convex portion 7 can be formed at the same time. Furthermore, since the 2nd convex part 8 exists in the outline inside of the slit 9, this can also be shape | molded simultaneously by providing a cylindrical hollow in the end surface of a 1st metal mold | die.

  Therefore, in the first embodiment, the pair of first convex portions 7 and the second convex portions 8 arranged as described above can be simultaneously formed when the operation handle 1 is formed. In addition, since the other first convex portion 7 and the second convex portion 8 are present on the same generatrix on the inner surface of the cylindrical portion 6, both the central axes of the cylinders are parallel to each other, Since the cylindrical central axis of one first convex portion 7 overlaps the cylindrical central axis of the other first convex portion 7, the cylindrical central axis of the pair of first convex portion 7 and second convex portion 8 is also parallel to the moving direction. As a result, the outer circumferences of the first convex portion 7 and the second convex portion 8 are parallel to a cam groove 20 of the cam member 4 to be described later. The convex portion 7 can slide smoothly with the cam groove 20.

  The support frame 2 is formed with a plurality of screw holes 10 on the back side thereof, and a bent wall 11 that is bent in the direction of the cylindrical portion 6 is extended on both side edges, and the center portion of each bent wall 11 is extended. Further, a rectangular opening 12 that allows the cam member 4 to protrude and project on the front end side is formed.

  The pair of left and right slide pins 3 are formed arbitrarily, but basically, as shown in FIG. 3, as shown in FIG. A hole 13 is formed, and projections 14 that are locked to locking holes 17 of the cam member 4 to be described later are individually formed on the outer surfaces of the upper and lower wall portions that define the through-hole 13. Further, when the operation handle 1 is arranged at the center of the glove box body, the shape of each slide pin 3 is the same on the left and right, but when the operation handle 1 is arranged on either the left or right side, each slide Since the shape of the pin 3 is not the same on the left and right, when the slide pin 3 is assembled, a concave groove 23 is formed on the side surface of the rear end portion for preventing erroneous assembly on the front and back sides. Furthermore, when the inclined surface is provided on the distal end side of the slide pin 3 and the glove box body is rotated to the instrument panel side, the slide pin 3 is easily engaged in the lock hole provided on the instrument panel side. Therefore, the slide pin 3 itself also has an assembly direction, and the above-described concave groove 23 effectively acts to prevent misidentification of the assembly direction.

  The cam member 4 is formed symmetrically, but basically, as shown in FIG. 4, the tip side with the flange portion 16 as a boundary is formed into a rectangular tube shape, which is an inner cylindrical member. The rear end side is formed into a cylindrical shape, and a locking hole 17 for locking the protrusion 14 of the slide pin 3 is formed on the upper and lower side surfaces of the former rectangular tube front end portion 4a. The connection piece 18 which fits the above-mentioned through-hole 13 is formed in one side surface which opposes, and it becomes the structure which forms the rib wall 19 for an incorrect assembly | attachment inside the other side surface.

  Further, for the latter cylindrical rear end portion 4b, a cam groove 20 having a substantially right triangle shape is formed on the outer periphery thereof, and a guide groove 20a parallel to the axis of the cam member 4 is formed. The groove 20a is formed at the same depth across the wall, but a passage connecting the cam groove 20 and the guide groove 20a is defined in the vicinity of the flange portion 16. The guide groove 20a reaches the end surface of the cylindrical rear end portion 4b. When the cam member 4 is moved in the axial direction, the first convex portion 7 enters the guide groove 20a from the end surface side, and passes through the passage. It is introduced into the cam groove 20 having a substantially right triangle shape. Then, after the lock device is assembled, when the operation handle 1 is grasped and pulled up, the first convex portion 7 moves in a sliding contact state along the oblique side groove edge of the substantially right triangle shape forming the cam groove 20. It has become. In addition, since the cam groove 20 and the guide groove 20a similar to the above are formed in the cylindrical rear end portion 4b at a position rotated by 180 ° about the axis, the pair of first convex portions 7 are formed. It will be introduced into the corresponding cam groove 20.

  In addition to this, when the biasing spring pressure of the compression coil spring 5 with respect to the cam member 4 becomes smaller (extends) within the longitudinal range of the one cam groove 20, the first convex portion 7 is The lock groove 21 that receives the second convex portion 8 is cut and formed at a position in sliding contact with the end face side of the cylindrical rear end portion 4 b of the cam groove 20. Further, by providing a step portion 22 at the edge of the oblique side that forms a substantially right triangle shape of the cam groove 20 in which the lock groove 21 is formed, the branch portion of the cam groove 20 and the lock groove 21 is placed on the step portion 22. As a result, the first convex portion 7 that contacts the edge of the oblique side of the cam groove 20 having a substantially right triangle shape slides away from the branch portion. Therefore, when the first convex portion 7 slides along the cam groove 20, it does not pass through the branch portion, so that something seems to be caught when the operation handle 1 is operated. There is no factor that causes an uncomfortable feeling of touch and does not give an uncomfortable feeling to the operator.

  The bottom surfaces of the cam groove 20 and the guide groove 20 a are deeper than those of the lock groove 21, and the oblique groove edge of the cam groove 20 and the entrance of the lock groove 21 are formed at the portion where the lock groove 21 is formed. The gap is spaced apart to define a passage that is received in the lock groove 21 of the second convex portion 8. Further, the lock groove 21 is configured as a hollow having a substantially rectangular shape as a whole formed near the end surface of the cylindrical rear end portion 4b of the cam member 4 and outside the oblique side of the cam groove 20 having a substantially right triangle shape. The substantially rectangular lock groove 21 is connected to the cam groove 20 at the corner on the oblique side of the cam groove 20 and closer to the center of the cam member 4. Further, the lock groove 21 holds the cam member 4 in a state where the cam member 4 is drawn into the cylindrical portion 6 of the operation handle 1 at the oblique side of the cam groove 20 and the end surface side of the cam member 4. 8, the wall that constitutes one side of the fillet portion 21 a and is parallel to the axis of the cam member 4 is formed at a distance from the oblique side of the cam groove 20. When the first convex portion 7 slides along the cam groove 20, there is no such a feeling that something is caught. The fillet portion 21a is provided so that the engaging second convex portion 8 does not fall off the lock groove 21 even when the cam member 4 rotates. The wall of the fillet portion 21a does not need to be parallel to the axis of the cam member 4, may be inclined to some extent, and may be a protrusion instead of a wall.

  Further, the latter cylindrical rear end portion 4b is cut out of a part of the wall thickness defining the oblique side groove edge of each cam groove 20, and the above-described O-ring 24 is mounted on the base side of the flange portion 16. The storage groove 25 is formed so that the storage groove 25 communicates with the cam groove 20. However, the present invention is not limited to this, and although not specifically illustrated, Depending on the implementation, the groove 25 may be formed as an annular concave groove that can isolate the O-ring 24. In particular, in this case, there is no fear that the O-ring 24 will come off from the concave storage groove 25, and for example, even if the O-ring 24 is broken, there is no concern that it will enter other places, and it will be twisted when exerting braking force. No worries. However, in any case, forming the storage groove 25 in the cylindrical rear end portion 4b of the cam member 4 enables the cam member 4 itself to be downsized, including the cylindrical rear end portion 4b.

  In addition, a cylinder lock is not disposed on the operation handle 1 according to the first embodiment, but there is also an operation handle for disposing the cylinder lock between the pair of cam members 4. In this case, the pair of cam members 4 and the cylinder lock are arranged slightly shifted in the vertical direction with respect to the operation handle, but the lock groove 21 is located near the end surface of the cylindrical rear end portion 4b of the cam member 4. By positioning the cam groove 20 on the outer side of the oblique side, the operation handle 1 is provided with a necessary and sufficient width to be held by the operator, and an angle at which the operation handle 1 can be pulled up without a sense of incongruity is ensured. It becomes possible. In addition, in the first embodiment, since the cost is reduced by sharing the components of the operation handle where the cylinder lock is not arranged and the operation handle where the cylinder lock is arranged, the lock groove 21 is formed in the cam member 4. It is effective to arrange it near the end surface of the cylindrical rear end portion 4b and outside the corner formed by the oblique side and one side of the cam groove 20.

  Therefore, when assembling the lock device having such a configuration, first, the state in which the O-ring 24 is mounted in each storage groove 25 on the cam member 4 side is obtained, and the inside of each cylindrical portion 6 of the operation handle 1 is obtained. In this case, the left and right compression coil springs 5 and the cam member 4 are individually inserted. In this case, a pair of cam grooves 20 formed on the outer periphery of the cylindrical rear end portion 4b of the cam member 4 are formed. While facing the corresponding first convex portion 7 in the guide groove 20a, the cylindrical rear end portion 4b of the cam member 4 is pushed into the cylindrical portion 6 and rotated in a predetermined direction to cam the first convex portion 7 When engaged in the groove 20, the left and right cam members 4 are attached in a state where the square cylindrical tip 4a protrudes to the outside by the spring pressure of each compression coil spring 5, as shown in FIG. Will be energized.

  Next, this time, the support frame 2 is assembled to the operation handle 1 in this state. In this case, each cam member 4 is linearly pushed into the cylindrical portion 6 and then the operation handle 1 is operated. When the first convex portion 7 is shifted outward in the cam groove 20 by swinging in the direction, the second convex portion 8 is introduced into the lock groove 21 as shown in FIG. Since the entirety is drawn into the cylindrical portion 6, if the support frame 2 is fitted on the back side of the operation handle 1 using such a state, the support frame 2 is thereby moved to the operation handle. It will be assembled on the 1 side. In this case, since the first convex portion 7 is present at the deep bottom of the cam groove 20 and the second convex portion 8 is present at the shallow bottom of the lock groove 21, the two convex portions are separated. 7.8 does not interfere with each other.

  Therefore, after that, if the support frame 2 is screwed to the mounting wall extending in the recess of the glove box main body in such a state, the operation handle 1 is swingably supported on the recess side. In this case, however, since the square cylindrical tip portions 4a of the left and right cam members 4 do not protrude to the outside, the assembling work is facilitated and the cam members 4 can be delivered. Can be delivered in a retracted state, so the delivery form can be made as small as possible.

  In addition, when the cam member 4 is pulled into the cylindrical portion 6, as shown in FIG. 7, the operation handle 1 is opened and easy to hold. From this point, the assembling work is facilitated and supported. After the frame 2 is screwed to the mounting wall, if the operating handle 1 in the open state is closed, the retracted state of the cam member 4 into the cylindrical portion 6 is released, and the square cylindrical tip portion 4a of the cam member 4 is released. Since it protrudes outward from the opening 12 of the support frame 2, if the rear end portions of the left and right slide pins 3 are fitted in the square cylindrical tip portions 4 a of the cam members 4, The locking device will be assembled. At this time, the rib wall 19 for preventing erroneous assembly can be inserted by fitting into the concave groove 23 that defines the through hole 13 of the slide pin 3, and even if the insertion direction is erroneously inserted, Since the wall side surface not having the concave groove 23 cannot be fitted into the rib wall 19, the left and right slide pins 3 are securely assembled.

  In such a state, when the rear end portion of the slide pin 3 is fitted into the square cylindrical tip portion 4 a of the cam member 4, the protrusion 14 provided on the slide pin 3 is engaged with the locking hole 17. Therefore, the connecting piece 18 on the cam member 4 side is press-fitted into the through hole 13 of the slide bin 3, and the tip corner of the connecting piece 18 is the inner surface of the through hole 13. Can be effectively prevented from rattling of the slide pin 3.

  Therefore, although this is used for actual use, when the operation handle 1 is not operated to swing, the pair of left and right slide pins 3 are attached to the compression coil spring 5 as shown in FIG. Since it is extended by the force spring pressure, it is engaged with the lock hole H of the instrument panel P from the through hole (not shown) formed in the side surface of the glove box body (not shown). The glove box body 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 first convex portion 7 in the cylindrical portion 6 interlocked with the swinging of the operating handle 1 corresponds to the hypotenuse of the cam groove 20. Since the cam member 4 is drawn into the cylindrical portion 6 by moving along the groove edge, the tip of each slide pin 3 is retracted from the lock hole H of the instrument panel P as shown in FIG. The 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 restraint between the first convex portion 7 of the cylindrical portion 6 and the cam groove 20 which is rotated in conjunction with the release is released, and the operation handle 1 is compressed. At the same time, the slide pin 3 receives the biasing spring pressure of the compression coil spring 5 and suddenly vibrates in the reverse direction with the cylindrical portion 6 due to the spring pressure of the coil spring 5. However, in the first embodiment, it is O between the inner surface of the cylindrical portion 6 of the operating handle 1 as an outer cylindrical member and the outer surface of the cylindrical rear end portion 4b of the cam member 4 as an inner cylindrical member. Since the ring 24 is in sliding contact with the O ring 24 at the same time, the operating handle 1 slowly swings in the non-operating position direction by the sliding resistance (braking force) of the O-ring 24, thereby reducing the protruding amount of the slide pin 3. The stoppers to be controlled, that is, here, Work handle 1 and the support frame 2 with each other, it is unnecessary to collide strongly. Therefore, since the possibility of generating a loud collision sound as in the conventional case is sufficiently suppressed, there is a concern that the collision sound may cause the device to be damaged and cause anxiety, distrust or discomfort to the operator. That is why it disappears.

  On the contrary, when the opened glove box body is closed, the glove box body is rotated in the closing direction. At this time, the front ends of the slide pins 3 protruding in the lock hole H direction face each other. Abutting against the wall surface of the instrument panel P, the tip portion of each slide pin 3 passes while receding linearly once, and finally, the biasing spring pressure of the compression coil spring 5 causes the instrument panel P to Since it is engaged with the lock hole H, it is locked in the above-described closed state.

  In this case, the first convex portion 7 of the cylindrical portion 6 moves linearly in the corresponding cam groove 20 and the cam member 4 is pulled into the cylindrical portion 6, so that the slide pin 3 is locked. When engaging with the hole H, the slide pin 3 receives the urging spring pressure of the compression coil spring 5 and tries to protrude in the direction of the lock hole H with rapid force. Since the O-ring 24 is in sliding contact with the outer surface of the cylindrical rear end portion 4b of the cam member 4 at the same time, the cam member 4 slowly moves in the cylindrical portion 6 by the sliding resistance of the O-ring 24. Thus, the stoppers that protrude in the direction of the lock hole H and restrict the amount of the protrusion, that is, the cam groove 20 and the first protrusions 7 here do not collide strongly. Accordingly, in this case as well, the possibility of generating a loud collision sound is sufficiently suppressed, so that the collision sound may cause the device to be damaged and cause anxiety, distrust or discomfort to the operator. That is why it disappears.

  That is, in the first embodiment, as described above, one O-ring 24 has a sliding resistance with respect to the swinging motion of the operation handle 1 and a sliding resistance with respect to the linear motion of the slide pin 3. Since it is possible to effectively suppress the occurrence of collision noise in the two operation modes at the same time, it goes without saying that it is extremely rational and effective. If it is going to use, it will have to stick a buffer material to the whole area between the collision surfaces of each above-mentioned stopper, and if a buffer material is damaged, the variation in a control position may also arise.

  Furthermore, the configuration in which the O-ring 24 is disposed between the cylindrical portion 6 of the operation handle 1 and the cam member 4 that connects the slide pin 3 does not require space for other portions, Assembling work is facilitated, and even when there is a dimensional variation between the inner diameter of the cylindrical portion 6 of the operation handle 1 and the outer diameter of the cylindrical rear end portion 4b of the cam member 4, this variation is also effective. Can be absorbed. Further, even when grease is applied to the O-ring 24, it is not necessary to apply the grease to the slide pin 3 or the like that is easy to touch, and sufficient sliding resistance can be obtained by the elasticity of the O-ring 24 itself. There is no need to use high-viscosity grease that is easy to cure. Moreover, since the O-ring 24 can be freely selected from standard products, it is not only economical but also excellent in versatility.

  Next, the locking device according to the second embodiment will be described. Unlike the side locking device of the first embodiment, the second embodiment was developed as a center locking device of a glove box, and its basic structure As in the first embodiment, as shown in FIG. 10, the operation handle 1, the support frame 2, the slide pin 3, the cam member 4, the compression coil spring 5, and the O-ring 24 are provided.

However, because of the relationship developed as a center lock device, the operation handle 1 is formed into a shape that can be used as a vertically long shape, and a single cylindrical portion 6 is formed on the back side thereof. 6, one cam member 4 for mounting the O-ring 24 in the storage groove 25 and one compression coil spring 5 are vertically inserted, and one bent wall is provided for the support frame 2. 11 is formed with a rectangular opening 12 which allows the rectangular tube tip 4a of the one cam member 4 to protrude and project, but the other bent wall 11 is formed on the bottom surface of the cylindrical portion 6 of the operation handle 1. A circular support hole 27 for supporting the provided shaft portion 26 is formed, and the slide pin 3 has a short dimension that can be engaged with and disengaged from the striker 28 provided in the space of the instrument panel P. It is configured to be granted.

Therefore, even when the lock device having such a configuration is assembled, first, the state in which the O-ring 24 is attached to the storage groove 25 on the one cam member 4 side is obtained, and the inside of the cylindrical portion 6 of the operation handle 1 is obtained. If one compression coil spring 5 and one cam member 4 are inserted into the first protrusion 7 and the first protrusion 7 is engaged with the cam groove 20 while rotating the cam member 4, one cam is provided. The member 4 is urged by the spring pressure of the compression coil spring 5 so that the square cylindrical tip 4a protrudes to the outside.

  Therefore, this time, the support frame 2 is assembled to the operation handle 1 in this state. In this case, after pulling the entire cam member 4 into the cylindrical portion 6 as in the first embodiment, If the support frame 2 is fitted on the back side of the operation handle 1 using such a state, the support frame 2 is assembled on the operation handle 1 side. If the support frame 2 is screwed to the mounting wall extending in the recess, the operation handle 1 is supported on the recess side in a swingable manner as shown in FIG.

  Accordingly, although this is used for actual use, the slide pin 3 is biased by the compression coil spring 5 although not specifically shown in the state where the operation handle 1 is not swung. Since it is extended by the spring pressure and locked to the striker 28 on the instrument panel P side, the glove box body B is thereby locked in the closed state.

  In order to release such a locked state, when the operation handle 1 is grasped and pulled forward, the first convex portion 7 in the cylindrical portion 6 moves along the hypotenuse groove edge of the corresponding cam groove 20. Since the cam member 4 is pulled into the cylindrical portion 6, the tip of the slide pin 3 is allowed to retreat from the striker 28 on the instrument panel P side and the glove box body is allowed to rotate in the opening direction. It will be.

  At this time, when the operator releases his / her hand from the operation handle 1, the restraint between the first convex portion 7 of the cylindrical portion 6 and the cam groove 20 which is rotated in conjunction with the release is released, and the operation handle 1 is compressed. At the same time, the slide pin 3 receives the biasing spring pressure of the compression coil spring 5 and suddenly moves in the direction of the striker 28 while trying to swing with the spring force of the coil spring 5 with the cylindrical portion 6 in the reverse direction. Even in the second embodiment, the O-ring 24 is in sliding contact with the inner surface of the cylindrical portion 6 of the operation handle 1 and the outer surface of the cylindrical rear end portion 4b of the cam member 4 at the same time. Due to the sliding resistance of the O-ring 24, the operation handle 1 is slowly swung in the non-operation position direction, whereby the stoppers that regulate the protruding amount of the slide pin 3, that is, the operation handle 1 and the support frame The two may collide strongly Kunar. Therefore, even in the second embodiment, the possibility of generating a loud collision sound is sufficiently eliminated, so that the collision sound reminds the device to be damaged, causing the operator to feel anxiety, distrust or distrust. There is no need to worry about giving pleasure.

  On the contrary, when the opened glove box body B is closed, the glove box body B is rotated in the closing direction. At this time, the tip of the slide pin 3 is moved to the striker 28 of the instrument panel P. Then, the tip of the slide pin 3 passes while receding once linearly, and finally is locked to the striker 28 of the instrument panel P from the inside by the biasing spring pressure of the compression coil spring 5. Therefore, this locks the above-mentioned closed state.

  In this case, since the first convex portion 7 of the cylindrical portion 6 moves linearly in the corresponding cam groove 20 and the cam member 4 is drawn into the cylindrical portion 6, the slide pin 3 becomes the striker. At this time, regardless of the operation handle 1, the slide pin 3 receives the urging spring pressure of the compression coil spring 5 and tries to protrude in the direction of the striker 28, regardless of the operation handle 1. Since the O-ring 24 is simultaneously slidably contacted between the inner surface of the cylindrical portion 6 of the operation handle 1 and the outer surface of the cylindrical rear end portion 4b of the cam member 4, the sliding resistance of the O-ring 24 causes the cam member 4 to The cylindrical portion 6 slowly protrudes in the direction of the striker 28, so that the stoppers that restrict the protruding amount, that is, the cam groove 20 and the first convex portion 7 do not collide with each other. Therefore, there is no need to worry that the collision sound will cause the device to be damaged and cause anxiety, distrust or discomfort to the operator.

As shown in the first and second embodiments described above, the cylindrical portion 6 has one end on the opening side sealed by the O-ring 24 and the cam member 4 and the other end provided with a bottom surface. By doing so, it is possible to completely isolate the cam groove 20 and the first convex portion 7 which are the sources of collision noise from the outside world. As described above, by arranging the cam groove 20 that is the motion conversion mechanism and the first convex portion 7 in the sealed space, even if a collision sound is generated, the collision sound is generated from the inside of the cylindrical portion 6. Since it does not leak to the outside, it is possible to provide a locking device with further improved noise reduction. In this case, regarding the closing method of the slit 9, another member having the same shape as the slit 9 may be embedded in the slit 9, or another member that covers the entire cylindrical portion 6 or the entire back side of the operation handle 1 may be attached. good.

  In the first and second embodiments, the configuration in which the cam groove 20 is a right triangle has been described. However, the conversion from the swinging motion of the operation handle 1 to the linear motion of the slide pin 3 in a normal use state is as follows. The cam member 4 has a stepped surface having an angle other than parallel or orthogonal to the swing axis because the stepped portion 22 constituting the oblique side of the right triangle and the first convex portion 7 slide. If it is, the same effect as the first and second embodiments can be obtained. In this case, the shape of the step surface in the longitudinal direction may be a straight line, a curve, or a free curve, and a straight line connecting both end point positions that are the sliding range of the first convex portion 7 with the shortest distance is relative to the swing axis. If it is other than parallel or orthogonal, the present invention can be implemented.

  Further, in the first and second embodiments, the configuration has been described in which the cam member 4 is inserted into the cylindrical portion 6 of the operation handle 1 so that the entire outer surface of the O-ring 24 is in sliding contact with the inner surface of the cylindrical portion 6. Even if the portion 6 is not completely cylindrical but has a shape like a semi-cylindrical shape having a cylindrical inner surface in part, and the portion 6 is in sliding contact with a part of the outer surface of the O-ring 24, Implementation becomes possible.

  In the first and second embodiments, the cam member 4 is inserted into the cylindrical portion 6 of the operation handle 1, and the first convex portion 7 formed on the inner surface of the cylindrical portion 6 and the cam formed on the surface of the cam member 4. Although the configuration in which the swinging motion of the operation handle 1 is converted into the linear motion of the slide pin 3 by the groove 20 has been described, the cam member 4 has a cylindrical shape, the cam groove 20 is formed on the inner surface thereof, and the cylindrical portion Even if the first convex portion 7 is formed on the outer surface of the cam 6 and the cylindrical portion 6 is inserted into the cam member 4, the swinging motion of the operation handle 1 can be converted into the linear motion of the slide pin 3. The same effect as the first and second embodiments can be obtained. In this case, a gap is provided between the outer surface of the cylindrical portion 6 and the operation handle 1 so that the cylindrical portion 6 can be inserted into the cam member 4, or the cam member 4 is formed into a semicylindrical shape. By making it the structure which covers a part of outer surface of the cylindrical part 6, implementation of this invention is attained.

  Further, in the first and second embodiments, the configuration in which the swing shaft of the operation handle 1 and the linear movement shaft of the slide pin 3 are the same axis has been described, but in order to increase the degree of design freedom, It is also possible to arrange the swinging shaft and the linear motion shaft of the slide pin 3 in parallel. In that case, by configuring the cam member 4 and the slide pin 3 to be connected via a connecting rod or the like, Implementation of the present invention becomes possible. Also in this case, since the swinging motion of the operation handle 1 can be converted into the linear motion of the slide pin 3, the same effect as the first and second embodiments can be obtained.

  For the same reason, it is possible to arrange the swing shaft of the operation handle 1 and the linear movement shaft of the slide pin 3 to be orthogonal to each other. In this case, the cam handle 20 and the first convex portion 7 are included. Instead of the motion conversion mechanism, a rack and pinion mechanism, a piston crank mechanism, or the like is adopted as the motion conversion mechanism, and the O-ring 24 is slidably in contact with the inner surface of the outer cylindrical member and the outer surface of the inner cylindrical member constituting the rotating portion simultaneously. By disposing, a silenced locking device can be provided.

  The locking device according to the present invention can effectively suppress the occurrence of a collision sound that easily recalls damage to the device itself, particularly when applied to a glove box or the like that is attached to an automobile instrument panel so as to be openable and closable. The locking device is very convenient.

1 is an exploded perspective view showing a side lock device according to a first embodiment of the present invention. It is AA sectional view taken on the line of the operation handle in FIG. (A) is a principal part enlarged front view which shows the structure of the rear-end part side of a slide pin, (B) is the same side view. (A) is a front view of the cam member, (B) is a plan view of the cam member, (C) is a rear view of the cam member, (D) is a sectional view taken along line BB in FIG. 4A, and (E) is FIG. 4C. It is a CC sectional view taken on the line. FIG. 6 is a rear view showing a state in which a cam member is housed in a cylindrical portion of an operation handle and a square cylindrical tip protrudes outward by a compression coil spring. It is a rear view which shows the state which pulled the cam member against the spring pressure of the compression coil spring in the cylindrical part of the operation handle. It is a perspective view which shows the state which fitted the support frame in the operation handle in the state which retracted the cam member. It is a top view which shows the state which the front-end | tip part of the slide pin was engaged in the lock hole of the instrument panel. It is a top view which shows the state which rock | fluctuated the operation handle and the front-end | tip part of the slide pin retracted | retreated from the lock hole of the instrument panel. It is a perspective view which decomposes | disassembles and shows the center lock apparatus which concerns on 2nd Example of this invention. It is a principal part perspective view which shows the state which assembled | attached the center lock apparatus to the glove box main body side.

Explanation of symbols

1 Operation Handle 2 Support Frame 3 Slide Pin 4 Cam Member 4a Square Cylindrical Tip 4b Cylindrical Rear End 5 Compression Coil Spring (Spring Member)
6 Cylindrical portion 7 First convex portion 8 Second convex portion 9 Slit 10 Screw hole 11 Bending wall 12 Opening 13 Through hole 14 Projection 16 Flange portion 17 Locking hole 18 Connecting piece 19 Rib wall 20 Cam groove 20a Guide groove 21 Lock Groove 21a Fillet part 22 Step part 23 Concave groove 24 O-ring 25 Storage groove 26 Shaft part 27 Bearing hole 28 Striker B Glove box body (lid)
P instrument panel (support)
H Lock hole

Claims (5)

A support body having a storage space; a lid body that is pivotally supported by the support body to close the storage space; a slide pin that is movably supported by the lid body and is engaged with and disengaged from the support body; and the slide A spring member that urges the pin to be engaged with the support body, an operation handle that is pivotally supported by the lid body to release the lock of the slide pin, and the movement of the slide pin to swing the operation handle In a locking device having a motion conversion mechanism for converting into an outer cylindrical member, the outer cylindrical member connected to one of the operation handle and the slide pin and the outer cylindrical member connected to the other are movably fitted concentrically to the outer cylindrical member A locking device comprising: an inner cylindrical member that performs sliding contact; and an O-ring that is in sliding contact with the outer cylindrical member and the inner cylindrical member simultaneously. The locking device according to claim 1, wherein the inner cylindrical member includes a storage groove in which an O-ring is mounted. The locking device according to claim 2, wherein the storage groove has a concave shape for isolating the O-ring. The motion conversion mechanism includes a cam groove formed on the inner cylindrical member side and a convex portion formed on the outer cylindrical member side and moving in the cam groove. The O-ring storage groove communicates with the cam groove. The locking device according to claim 2, wherein: The outer cylindrical member has a bottom, and the motion conversion mechanism includes a cam groove formed in one of the inner cylindrical member and the outer cylindrical member, and a convex portion formed on the other and moving in the cam groove. The lock device according to claim 1, wherein the convex portion and the cam groove are in a space sealed by an O-ring.

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