JPH06212850A - Latch device - Google Patents

Abstract

PURPOSE:To reduce the number of components and reduce the assembly manhours to reduce the manufacturing cost even if a latch device has a structure of long stroke. CONSTITUTION:Guide channels 82 and 84 are formed in a guide cylinder 60 with both right and left directions as the longitudinal direction. A turning shaft 74 projected from a latch body 112 and a guide piece 76 are fitted into the guide channels 82 and 84. A projection 142 is projected and formed in the guide cylinder 60, and it is inserted into a guide slot 144 formed in a housing 110. Accordingly, the latch body 112 is moved inside the guide cylinder 60, and the guide cylinder 60 is reciprocated against the housing 110. One end side of a compressed coil spring 122 is stored in a circular hole 130 of the latch body 112, and the latch body 112 is biased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latch device that locks a latch body in a housing in a pushed-in state and in a pulled-out state, and is applicable to a cup holder, a lid or the like.

[0002]

2. Description of the Related Art Some vehicle center clusters are equipped with push-open type cup holders which automatically slide out when the lid is pushed.

This push-open type cup holder 1
The 90 is provided with a lock mechanism 180 as shown in FIG. In this lock mechanism 180, when the front surface of the cup holder 190 is pushed in the direction of arrow I, the trace member 184 attached to the rear end of the cup holder 190 is
Heart-shaped circulation cam 18 attached to the box 188
2 is guided along the outer periphery of the circulation cam 182 and circulates along the outer periphery of the circulation cam 182, and when the trace member 184 engages with the recess 192 of the heart-shaped circulation cam 182, the cup holder 19
The structure is such that 0 is held in the pushed state.

When the cup holder 190 is pushed, the trace member 184 is locked by the recess 192 formed in the circulation cam 182, and the cup holder 190 is pushed against the biasing force of the compression coil spring 194. It is supposed to be maintained.

[0005]

In the structure described above, the lock mechanism 1 is provided to secure a predetermined stroke.
80 and the compression coil spring 194 need to be separately provided,
As a result, there are drawbacks that the number of components increases, the number of assembling steps increases, the labor for setting the positions between the components increases, and the manufacturing cost increases.

On the other hand, conventionally, a latch device for holding the ashtray in a pushed state is known, but the conventional latch device has a short stroke and cannot be applied to a cup holder having a long stroke. It was

In view of the above facts, an object of the present invention is to provide a latch device having a long stroke, which has a reduced number of parts and a reduced number of assembling steps to reduce the manufacturing cost.

[0008]

A latch device according to the present invention includes a housing fixed to a mounting member, a support member reciprocally inserted into the housing, and a reciprocally insertable member into the support member. A latch body that presses the support member in a pushed-in state and is locked to the support member in a pulled-out state, and one end side is locked to the housing and the other end side is locked to the latch body And a pair of circulating cam grooves formed in different portions of the latch body with different groove shapes, and attached to the housing. , A restoring force in a circulating direction of a torsional force generated by the reciprocating movement of the latch body to enter the circulation cam groove and being pressed by the groove wall surface of the circulation cam groove. Thus the circulation cam a groove is circulated every pushing operation of the latch body, and having a a trace member for maintaining the alternating state condition and the withdrawal pushing into the housing of the latch body.

[0009]

When the latch body is pressed against the urging force of the urging member, the pressing force is applied to the supporting member into which the latch body is inserted and is in contact, and the latch body is not only pushed into the supporting member but also supported. The member is pushed into the housing and the latch body moves relative to the housing by the amount of their strokes combined.

When the latch body moves by a predetermined amount, the trace member attached to the housing is inserted into the pair of circulation cam grooves of the latch body, and circulates in the circulation cam groove in a fixed direction by relative movement with the latch body. . Therefore, the trace member circulates in the circulation cam groove each time the latch body is pushed in, and holds the latch body alternately in the pushed-in state into the housing and the pulled-out state.

Here, since the pair of circulating cam grooves have different shapes, the trace member tracing the circulating cam groove is pressed from the groove wall surface of the circulating cam groove by the relative movement with the latch body, and a twisting force is exerted. While being imparted, it circulates in the circulation cam groove. Therefore, the trace member is biased in the circulation direction by the restoring force due to the twist of the trace member.

As described above, if the housing is fixed to the cup holder box or the like, the latch body inserted into the housing together with the support member and the striker protruding from the cup holder side can be engaged and disengaged, and the cup holder is stored. It is possible to lock the cup holder in each of the state and the removed state. That is, if it is adopted in a cup holder having a long moving stroke, the above operation can be performed with a small number of parts.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a latch device according to the present invention applied to a push-open type cup holder is shown in FIGS.
3 and this embodiment will be described based on these figures.

As shown in FIGS. 1 and 2, the latch device 1
Reference numeral 0 includes a trace member 14, a guide cylinder 60, a compression coil spring 122, a latch body 112, a housing 110 that houses the guide cylinder 60, and the like.

The housing 110 is in the shape of a box having a predetermined thickness, and a cylindrical guide cylinder 60 as a support member is inserted through an opening 114 formed at one end in the longitudinal direction.
Further, in the housing 110, a rectangular frame 116 for mounting the housing 110 in a box 188 which is a mounting member for supporting the cup holder so that the cup holder can be freely taken out and in, and correspondingly, projections 118 (see FIG. 2) on both side surfaces of the housing 110. Are formed. Thereby, the box 188 is sandwiched between the rectangular frame 116 and the protrusion 118, and the housing 110 is fixed.

In the guide cylinder 60, a pair of guide grooves 82 and 84 are formed on the upper side and the lower side in FIG.
A planar guide surface 86 that guides the reciprocating movement of the latch body 112 is formed on the inner side thereof.

As shown in FIG. 2, the latch body 112 inserted into the guide cylinder 60 is substantially L-shaped, and the rotating shaft 74 protruding from the latch body 112 is fitted in the guide groove 82. At the same time, the guide piece 76 protruding from the latch body 112 is fitted in the guide groove 84. The latch body 112 can be moved in the guide cylinder 60 by being guided by the guide grooves 82 and 84 and the guide surface 86.

However, the guide groove 84 has no groove end,
The guide groove 82 has a groove end portion 82A, and the moving width of the rotating shaft 74 is limited by the groove end portion 82A.

Further, a circular hole 130 is formed along the left-right direction in the figure at the insertion tip portion 72 formed on the left side of the latch body 112 in the figure. This circular hole 1
One end side of the compression coil spring 122 is accommodated in 30. The other end of the compression coil spring 122 has a circular hole 13
It is fitted in a spring bearing 124 which projects from 0 and is formed to project inside the housing 110. As a result, the latch body 112 is constantly urged by the compression coil spring 122 in the direction of withdrawing from the housing 110.

As shown in FIG. 1, a projection 142 is formed on the side surface of the guide cylinder 60 so as to project therefrom.
It is designed to enter into the elongated guide hole 144 formed in the device 10. Therefore, in the guide cylinder 60, the protrusion 142 moves inside the guide elongated hole 144 to allow the housing 1 to move.
10 reciprocatingly moves so that the protrusion 142 guides the elongated guide hole 1
By contacting one end of 44, the compression coil spring 1
The movement in the extraction direction is blocked against the biasing force of 22.

As shown in FIG. 2, the latch body 11
2 is provided on the side opposite to the insertion portion of the housing 110 into the housing 110.
0 is provided. When the tip end portion 150A of the striker 150 attached to the cup holder (not shown) presses the insertion tip end portion 72 and pushes the latch body 112 into the guide tube 60, the protrusion portion is formed in the hole portion 150B formed in the striker 150. 70 is fitted.

On the other hand, the locking mechanism of the latch device 10 includes a trace member 14 attached to the housing 110 and a pair of circulating cam grooves 20 and 22 formed on both surfaces of the latch body 112 and having different shapes. It is configured.

Further, the trace member 14 is the housing 1
It is mounted at a position corresponding to the circulating cam grooves 20 and 22 in 10, and the front portion of the cup holder (not shown) has an arrow A.
The striker 150 pushes the insertion tip 72
By pressing, the striker 150 and the latch body 112 are integrally moved in the arrow A direction, and the trace portions 24 and 26 of the trace member 14 are inserted into the pair of circulating cam grooves 20 and 22.

The trace member 14 has a substantially U-shape such that a part of a rectangular ring is cut out, and the circumferential side surfaces of the cutout are trace parts 24 and 26. The distance t between the tips of the traces 24 and 26 is equal to that of the circulating cam groove 2.
It is made larger than the groove bottom spacing of 0 and 22, and the trace portions 24 and 26 of the trace member 14 are circulated cam grooves 20,
When inserted in 22, the tip portions of the trace portions 24 and 26 do not come into contact with the groove bottom surfaces of the circulating cam grooves 20 and 22, and the trace portions 24 and 26 come into contact with the groove wall surfaces to move circularly. There is.

The trace member 14 on the opposite side of the trace portions 24 and 26 is swingably fixed to the inner wall of the housing 110.

As shown by the solid line in FIG. 5, the upper circulation cam groove 20 has a shape in which a convex heart cam 32 is left uncut in a substantially central portion above the circulation cam groove mounting portion 18. . A groove wall surface 34 is provided across the width direction on the insertion end side of the trace member 14, and a protrusion 38 is formed in the center thereof toward the heart recess 36 of the heart cam 32.

On the other hand, the lower circulation cam groove 2 shown by the broken line
Similarly to the circulating cam groove 20, the heart cam 40, the groove wall surface 42, and the protrusion 44 are formed in different shapes in the second cam groove 20, and the trace portion 24 circulating the circulating cam groove 20 and the circulating cam groove 22 are formed. The circulating trace portion 26 is pressed against the groove wall surface and separated from each other.

Heart recess 3 provided in the circulating cam groove 20.
6 is provided at a position slightly displaced in the direction of arrow A from the heart concave portion 46 in plan view. This is the trace part 2
In consideration of the tolerance of Nos. 4 and 26, either the trace portion 24 and the heart recessed portion 36 or the trace portion 26 and the heart recessed portion 46 are engaged with each other in advance, and the trace member 14 is securely connected.
Is to lock.

The deviation of the heart recesses 36, 46 is canceled because the trace member 14 is expanded by the urging force of the compression coil spring 122, and the trace member 14 engaged and engaged is separated into the heart recess 36 and the heart recess 46. It is supported by points (see Figure 9).

In the circulating cam groove 22, the trace member 1
Groove wall surfaces 48, 5 on both sides in the width direction along the insertion direction of 4
Although 0 is formed, only part of the groove wall surface is formed in the circulating cam groove 20. This is the trace member 14
This is because the trace portion 24 is pressed toward the wall surface of the heart cam 20 by the twisting force of the heart cam 20 and does not move to the outside of the circulation cam groove 20.
Even if the trace part 24 is separated from the above, the trace portion 24 is guided by the insertion portion 32 of the circulation cam groove 34 following the trace portion 26 by the restoring force due to the twisting of the trace member 14, so that the trace portion 24 circulates on the groove wall surface that guides the trace portion 24. This is because it is not necessary to form the entire cam groove 20.

The insertion portion 52 of the trace member 14 of the circulating cam grooves 20, 22 is tapered so that the trace member 14 can be easily inserted.

Next, the operation of this embodiment will be described. Before pressing the latch body 112 with the tip portion 150A of the striker 150 (see FIG. 2), the protrusion 142 formed on the guide cylinder 60 is locked to one end of the guide elongated hole 144, and the guide cylinder 60 is removed from the housing 110. It has been prevented from moving out. Then, the rotary shaft 74 is locked to the groove end portion 82A, and the latch body 112 is prevented from moving out of the guide cylinder 60.

At this time, as shown in FIG. 2, the latch body 112 is biased by the compression coil spring 122 to rotate about the rotation shaft 74, and the right end side of the latch body 112 is raised. Therefore, the latch body 112 is located far away from the trace portions 24 and 26 of the trace member 14.

From the state shown in FIG. 2, the striker 150 pushes the central portion of the insertion tip 72 to push the latch body 112 into the housing 110.
This pressing force is applied to the guide tube 60 which is inserted and is in contact therewith, and as shown in FIG. 3, the guide coil 60 is guided by the inner surface of the housing 110 and inserted into the housing 110 while the compression coil spring 122 is compressed. Will be done. Furthermore, the striker 150 allows the insertion tip 72
As shown in FIG. 4, the upper side of the latch body 112 hits the end of the guide surface 86 as shown in FIG. 4, and the latch body 112 rotates clockwise in the figure with the pivot shaft 74 as a fulcrum. The protrusion 70 moves and the hole 70 of the striker 150 moves.
The striker 150 inserted in the 50B is the latch body 11
Locked to 2.

At this time, the trace portions 24 and 26 of the trace member 14 are guided along the groove wall surfaces of the circulating cam grooves 20 and 22, and engage with the recesses 36 and 46, respectively, and prevent the latch body 112 from being pulled out. .

Below, the trace portion 2 of the trace member 14 will be described.
The operation between Nos. 4, 26 and the circulating cam grooves 20, 22 will be described.

When the front part of the cup holder is pressed,
Striker 150 mounted on the back of cup holder
Pushes the insertion tip 72 of the latch body 112 that is movably supported by the housing 110,
12 moves in the direction of arrow A, and the trace member 1 is inserted into the circulating cam grooves 20 and 22 formed on both surfaces of the latch body 112.
4 traces 24, 26 are inserted (FIG. 5).

When the front surface of the cup holder is further pressed, the latch body 112 moves in the direction of arrow A, and the trace portion 26 of the trace member 14 is guided along the groove wall surface 50 of the circulating cam groove 22. On the other hand, the trace unit 24
Moves following the trace unit 26.

Next, as shown in FIG. 6, when the front surface of the cup holder is further pressed to move the latch body 112 in the arrow A direction, the trace portion 26 is guided by the groove wall surface 50 and is moved in the arrow D direction. Moving. On the other hand, the trace unit 24
Is guided by the heart cam 32 of the circulation cam groove 20 and is indicated by an arrow C.
The trace portion 24 and the trace portion 26 as they move in the direction.
And the trace member 1 gradually deviate in the direction in which they are separated from each other.
Torsional force is generated in 4.

Next, as shown in FIG. 7, the trace unit 2
When 4 reaches the corner 32B of the heart cam 32, the deviation between the trace portion 24 and the trace portion 26 becomes maximum, and the twisting force becomes maximum.

Next, as shown in FIG. 8, when the front surface of the cup holder is further pressed from the state of FIG. 7, the latch body 112 further moves in the direction of arrow A, and the restoring force of the twist of the trace member 14 causes it to move. , The trace portion 24 gets over the corner portion 32B of the heart cam 32 and moves in the direction of arrow D,
The trace portion 24 collides with the convex portion 38A of the groove wall surface 34 to generate a click sound, and at the same time, the positional deviation from the trace portion 26 is eliminated.

Next, as shown in FIGS. 8 to 9, when the overstroke amount of the pressing operation is canceled by the biasing force of the compression coil spring 122 shown in FIGS. 1 and 2, the latch body 112 moves in the direction of arrow B. Move to. At this time, the trace portion 24 is guided by the wall surface 32C of the heart cam 32, while the trace portion 26 is guided by the groove wall surface 4 of the circulating cam groove 22.
4 is guided by the convex portion 44A. That is, the trace unit 2
4 is pressed in the direction of arrow D and the trace portion 26 is pressed in the direction of arrow C, so that the trace member 14 is twisted. Here, when the latch body 112 further moves in the direction of arrow B, the trace portion 26 separates from the groove wall surface convex portion 44A, and the positional deviation from the trace portion 24 is eliminated by the restoring force. Therefore, the trace portions 24 and 26 in which the positional deviation is eliminated are
It is guided by the wall surface 32C and locked by the heart recesses 36 and 46.

Here, since the trace member 14 is prevented from being pulled out at the two locations of the heart recesses 36 and 46 on both sides, the trace member 14 can be firmly locked,
This state is the push-in state.

Next, as shown in FIG. 10, the front portion of the cup holder is indicated by an arrow A from the locked state of the trace member 14.
When the stroke is overstroked in the direction, the trace portion 24 is guided by the wall surface 32D of the heart cam 32, and the trace portion 26 is guided by the groove wall surface convex portion 44B and moves in the arrow D direction. As a result, the trace member 14 is twisted again. The heart concave portions 36 and 46 are the groove wall convex portions 4.
Since it is formed in the direction of the arrow D from the tip of 4A, the traces 24, 26 are formed when an overstroke occurs.
Does not cycle in the opposite direction.

Next, when the front portion of the cup holder is further overstroked, the latch body 112 moves in the direction of arrow A, and the trace portion 24 gets over the tip of the wall surface 32D by the restoring force of the trace member 14, and the trace portion 26. The positional deviation between the positions and is eliminated and the state shown in FIG. 11 is reached.

In this state of FIG. 11, the overstroke of the trace member 14 becomes maximum, and when the pressing is released, the compression coil spring 122 urges the latch body 11 to move.
2 is pushed back in the direction of arrow B. However, the trace part 2
4 interferes with the wall surface 32D of the heart cam 32 and cannot move in the direction opposite to the circulation direction.

Further, as shown in FIG. 12, when the compression coil spring 122 pushes the latch body 112 back in the direction of the arrow B, the trace portions 24 and 26 move to the wall surface 3 of the heart cam 32.
The latch body 112 moves in the arrow B direction by being guided by the 2D and the wall surfaces 48, 51 of the circulating cam grooves 20, 22.

Next, as shown in FIG. 13, when the latch body 112 is further extracted, the trace portion 26 is guided by the wall surface 48 of the circulating cam groove 22 and moves in the direction of arrow C. On the other hand, the trace portion 24 is the wall surface 3 of the heart cam 32.
Since it is guided by 2E and moves in the direction of arrow D, the positions of the trace portion 24 and the trace portion 26 are deviated, and a twisting force is again generated in the trace member 14 here.

Further, when the tip end portion 32F of the heart cam 32 is located at the trace portion 24, the deviation between the trace portion 24 and the trace portion 26 becomes maximum, and the twisting force becomes maximum.

When the latch body 112 is further moved in the direction of arrow B by pushing back the compression coil spring 122, the tip portion 32F of the heart cam 32 is moved to the trace portion 2.
At the same time as it is separated from 4, the positional deviation between the trace portion 24 and the trace portion 26 is eliminated by the restoring force due to the twist of the trace member 14.

When the latch body 112 is further pulled back by the compression coil spring 122, the circulating cam grooves 20 and 22 are separated from the trace member 14, the cup holder is pulled out from the box 188, and this pulled out state is the pulled out state. Becomes

The box 188 of the latch device 10
Before mounting to the trace member 14, the trace member 14, the guide tube 60, the compression coil spring 122, and the latch body 112
By attaching the latch device 10 with the housing 110 and the like assembled to the box 188, the attachment is easily completed. That is, in the present invention, since the lock mechanism and the compression coil spring are integrated, the number of parts can be reduced and the number of assembling steps can be reduced, and the manufacturing cost can be reduced.

In this embodiment, the case where the lock mechanism 10 according to the present invention is applied to the push-open type cup holder has been described, but the present invention is not limited to this, and for example, the opening / closing lid is locked. It can also be used as a means.

In this embodiment, the tip side surface of the trace member 14 is used as the trace portion. However, if the circulating cam groove is made of a hard material, the tip surface of the trace member 14 traces the inside of the circulating cam groove. You may let me.

[0055]

Since the latch device according to the present invention is constructed as described above, even if it has a structure with a long stroke, the number of parts can be reduced and the number of assembling steps can be reduced to reduce the manufacturing cost. It has an excellent effect.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a latch device according to the present invention.

FIG. 2 is a cross-sectional view showing an embodiment of the latch device according to the present invention, showing a state before the striker is pushed in.

FIG. 3 is a cross-sectional view showing an embodiment of a latch device according to the present invention, showing a state where the striker is being pushed in.

FIG. 4 is a cross-sectional view showing an embodiment of the latch device according to the present invention, showing a state in which the striker is completely pushed in.

FIG. 5 is a side view showing a latch body of an embodiment of a latch device according to the present invention, showing a state in which a trace portion is introduced.

FIG. 6 is a side view showing a latch body of an embodiment of a latch device according to the present invention, showing a state in which a trace portion is located in a circulating cam groove.

FIG. 7 is a side view showing a latch body of an embodiment of a latch device according to the present invention, showing a state in which a twisting force generated in a trace portion is maximized.

FIG. 8 is a side view showing a latch body of an embodiment of a latch device according to the present invention, and is a view showing a state in which positional deviation between trace portions is eliminated.

FIG. 9 is a side view showing a latch body of an embodiment of a latch device according to the present invention, showing a state in which a trace portion is located in a heart recess.

FIG. 10 is a side view showing a latch body of one embodiment of the latch device according to the present invention, and is a view showing a state where the trace portion is twisted again.

FIG. 11 is a side view showing a latch body of an embodiment of the latch device according to the present invention, and is a view showing a state where the overstroke of the trace portion is maximized.

FIG. 12 is a side view showing a latch body of an embodiment of a latch device according to the present invention, showing a state in which a trace portion is located in a circulating cam groove.

FIG. 13 is a side view showing a latch body of an embodiment of the latch device according to the present invention, and is a view showing a state where the twisting force generated in the trace portion is maximized again.

FIG. 14 is a perspective view showing a conventional cup holder.

[Explanation of symbols]

 10 Latch Device 14 Trace Member 20, 22 Circulating Cam Groove 24, 26 Trace Part (Trace Member) 60 Guide Tube (Support Member) 110 Housing 112 Latch Body 122 Compression Coil Spring (Biasing Member) 188 Box (Mounting Member)

Claims (1)

[Claims] 1. A housing fixed to a mounting member, a support member reciprocally inserted in the housing, a support member reciprocally inserted in the support member, and pressing the support member in a pushed state, A latch body that is locked to the support member in a pulled-out state, and one end side is locked to the housing and the other end side is locked to the latch body, and the latch body is urged in a direction to be pulled out from the support member. Urging member, a pair of circulating cam grooves formed in different portions of the latch body with different groove shapes, and the circulating cam attached to the housing and reciprocating the latch body. Entering the inside of the groove, the restoring force in the circulation direction of the twisting force generated by the pressing of the circulating cam groove from the groove wall surface causes the latch cam to move in the circulating cam groove. Circulating each pushing operation of I, the latching device, characterized in that it comprises a trace element, a a state extracting the pressed state to the housing of the latch body to maintain alternately.