JP3503437B2 - Latch device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latch device,
For example, the present invention relates to a latch device that allows a display device such as a liquid crystal display in a navigation system to be attached to and detached from the case when the display device is put in and taken out from the case of the navigation system body as needed.

[0002]

2. Description of the Related Art Conventionally, a navigation system has been used which is mounted on an automobile or the like and displays an accurate current position, a map of a driving area, a route to a destination, road traffic information and the like.

In such a navigation system, a current position, a map, a route, and other information are displayed on a display device such as a liquid crystal display or a CRT. In such a navigation system, there is known one in which a display device is housed in a navigation system body case when information is not needed.

Particularly, in a navigation system mounted on an automobile, the display device pops out due to vibrations received during traveling, or the display device housed in the navigation system body case sways, and the supporting member of the display device is fatigue-damaged. Doing so may damage the internal circuit or the like. Therefore, the display device is fixed in the navigation system body case by the latch device so that the display device does not swing, and can be easily pulled out when used.

In this latch device, a striker provided on the display device side is inserted into a catcher provided on the case side of the navigation system main body and returned by inserting the striker at a switching position between lock and release. , Locking the catcher and striker with each movement
The release is repeated.

[0006]

However, the force applied when the catcher and the striker collide with each other, especially when locked, is not limited to the momentum of the striker.
The momentum of the entire display device to which the striker is attached is related. Therefore, extremely large force (for example,
10 kgf) acted on the catcher and the striker, and the structure of the latch device was sometimes destroyed. In particular, the striker has a thin rod shape, so that stress is likely to be concentrated and is easily broken.

In order to prevent the above-mentioned destruction, it is sufficient to increase the size of the catcher and the striker to increase the strength. However, the navigation system is required to be lighter and smaller, so increasing the size of the navigation system is important. This is not preferable because it leads to an increase in size. Also,
When the size of the latch device is increased, the operability of switching between lock and release is deteriorated. In particular, the striker is usually a thin rod, and due to its structure, the stress is likely to be concentrated even if the size is increased. Therefore, there has been a demand for a latch device capable of preventing breakage with a configuration that is not simply increased in size.

[0008]

[0009] The present invention is, in view of the cause of the destruction of the above-mentioned latch device, as a large force to the catcher and the striker is not applied <br/>, rats without destroying the latching device
The purpose is to make the latch device perform its latching function.

[0010]

The present latch device is provided with a striker and a catcher, and
In addition to these, there are provided a first blocking member that is provided outside the engagement portion of the striker and that interlocks with the movement of the striker, and a second blocking member that is provided outside the inside of the catcher and that interlocks with the movement of the catcher. I have it.

When only the engaging portion of the striker moves into the catcher from the insertion position deeper than the lock and release switching insertion position, the resistance force from the catcher directly acts on the engaging portion. When the engagement part of the striker is inserted into the catcher at any insertion position from the insertion limit position where movement is blocked to the insertion position that is shallower, the first blocking member and the second blocking member are By abutting, the engagement portion of the striker is further prevented from being inserted into the catcher.

That is, above the switching insertion position,
At the insertion position below the insertion limit position, the first blocking member and the second blocking member come into contact with each other to prevent the engagement portion of the striker from being inserted into the catcher. Therefore, since the downsized striker and the catcher switch between the lock and the release, even if the striker engaging portion is inserted into the catcher, the striker engaging portion receives an excessive force from the catcher. Does not stop the movement of the display device, but stops the insertion of the engaging portion by the contact between the first blocking member and the second blocking member before the engaging portion reaches such an insertion limit position. To be done.

Therefore, it is possible to prevent an excessive force from being applied to the engagement portion of the striker from the catcher, so that stress is not concentrated on the engagement portion of the striker and the catcher, and the latch device is prevented from being broken. It Of these, the first blocking member may be arranged so as to interlock with the movement of the striker in the periphery of the striker in the direction orthogonal to the insertion direction of the engagement portion of the striker.

Further, the first blocking member is formed so as to project from the striker in a direction orthogonal to the insertion direction of the engagement portion of the striker, and the surface facing the insertion direction of the engagement portion of the striker has a second blocking member. You may make it contact | abut with. In addition, the first blocking member includes a first protrusion formed by protruding from the striker in a direction orthogonal to the insertion direction of the engagement portion of the striker, and a first protrusion in the insertion direction of the engagement portion of the striker.
You may provide the 2nd protrusion part which protrudes from a protrusion part and makes a front-end | tip part contact | abut with a 2nd blocking member.

It is preferable that the first blocking member is formed integrally with the striker in order to improve the positional accuracy. The second blocking member may be arranged so as to interlock with the movement of the catcher around the catcher in a direction orthogonal to the insertion direction of the engagement portion of the striker.

Further, the second blocking member may be formed around the insertion opening of the catcher into which the striker is inserted, and the tip end portion facing the striker may be brought into contact with the first blocking member. The second blocking member may also serve as a part or the whole of the catcher case. This is preferable because it is integrated with the catcher and improves the positional accuracy.

Further, the following structure can be mentioned as a structure for preventing the latch device from being broken when the striker is inserted into the catcher by absorbing the mounting position error. That is, mounting means for directly or indirectly mounting one or both of the striker and the catcher directly or indirectly to the display device storage case or the display device in a state where the striker and the catcher are allowed to move in the direction orthogonal to the insertion direction of the striker. With the provision, it is configured to absorb the mounting error between the striker and the catcher.

Due to such movement, even if the mounting position is deviated, when the striker comes into contact with the catcher, the striker or the catcher moves to a regular position where insertion resistance is small, and smooth insertion is performed. The destruction of the latch device can be prevented.

As an example of such a structure, either one of the catcher or the attaching means is provided with an engaging projection, and the other of the catcher or the attaching means is provided with an engaging hole with which the engaging projection is engaged. The size of the engagement projection in the direction in which the striker or the catcher is allowed to move may be configured to be smaller than the engagement hole, depending on the amount of movement allowed.
Since the size of this engaging projection is smaller than the size of the engaging hole in which it is engaged, the position of the catcher can be moved accordingly.

Further, a screw is attached to either one of the catcher or the attaching means, and an elongated hole through which the screw passes is provided in the other of the catcher or the attaching means.
The elongated hole may be long in a direction in which the elongated hole is allowed to move with respect to the striker or the catcher, and the relationship between the length of the elongated hole and the thickness of the screw may be set in accordance with the allowed movement amount. Since the screw is arranged in the long hole, the position of the catcher can be moved in the direction of the long hole.

The relationship between the catcher and the mounting means may be replaced with the relationship between the striker and the mounting means. Note that, for example, the loading / unloading of the display device to / from the display device storage case is performed manually. In the case of manual operation, the impact during storage is not constant in particular, and an excessive impact may be applied to the latch device, but it is possible to prevent breakage by the above-described configuration and action.

The display device displays information in the navigation system, for example. Besides this,
It may be a television screen. The hardware configuration includes a liquid crystal display and a CRT, but other display devices may be used.

When the display device displays the information of the navigation system, the display device storage case is a navigation system body case in which the hardware configuration of the navigation system is stored in addition to the storage part of the display device. May be used as a part or all of the above. As described above, when the display device is housed in the navigation system body case, the circuit board and the wiring are closely arranged in the interior, so that the latch device also needs to be particularly downsized. Will be more effective.

[0024]

DETAILED DESCRIPTION OF THE INVENTION

[First Embodiment] FIG. 1 is a perspective view showing a vehicle-mounted navigation system 2 to which the above-described invention is applied. The car navigation system 2 has a body case 4 except for the bottom surface.
(Corresponds to the display device storage case).
The front surface side portion of the main body case 4 is formed of a plastic front member 4a, and the other portions of the main body case 4 are made of sheet metal.

The front member 4a of the body case 4 is provided with a storage port 8 for the display device 6. When the display device 6 is completely housed in the main body case 4, the top surface 6 a of the display device 6 is exposed to the housing opening 8 as shown in FIG. 1. Further, the front member 4a is provided with an IC card insertion opening 10 below the storage opening 8, and the lid 12 of the IC card insertion opening 10 can be pushed open to insert the IC card into the slot inside the main body case 4. It is like this.

The lid 1 is provided adjacent to the IC card insertion slot 10.
4 is provided so that the lid 14 can be opened to insert a hard disk therein. As shown in the cross-sectional view of FIG. 2 taken along line AA of FIG. 1 and the cross-sectional view of FIG. 5 taken along line BB of FIG. After being set, the display device 6 is arranged there. At the bottom, main case 4
The IC card slot 18, the hard disk 20, and various elements and connectors are arranged on the circuit board 16 covering the bottom surface of the.

As can be seen from FIG. 5, the first moving rails 22 are fixed to the upper and lower sides of the main body case 4 in the front-rear direction, and the second moving rails 24 are movably attached to the first moving rails 22, respectively. It is provided. The left and right second moving rails 24 are connected and integrated by a connecting plate 25.

A display device support frame 26 is movably provided on each of the second moving rails 24.
The display device support frame 26 is connected and integrated by a connecting plate 28 having an L-shaped cross section. Then, the display device support frame 2
The display device 6 is swingably attached at its tip.

As shown in FIG. 5, an interface circuit board 30 for an external device fixed to the rear side wall 4b of the body case 4 is provided below the connecting plate 28 (omitted in FIG. 2). ). A striker 32 is attached to the lower surface of the connecting plate 28, and a catcher 34 is attached to the rear side wall 4b of the main body case 4. A latch device is composed of the striker 32 and the catcher 34. 2 and 5, since the striker 32 is captured by the catcher 34, the display device 6 is fixed to the rear side wall portion 4b of the main body case 4 via the connecting plate 28 and the display device support frame 26. There is. Therefore, the display device 6 is provided by a spring (not shown).
Receives a force in the direction of popping out from the storage port 8, but the storage state is maintained. Further, even if the body case 4 vibrates, the display device 6 does not sway with respect to the body case 4.

In order to take the display device 6 out of the main body case 4, the top surface 6a of the display device 6 is pushed inward of the main body case 4, and the striker 32 is inserted through the display device support frame 26 and the connecting plate 28. Push it further into the catcher 34.
As a result, the catcher 34 is released and the striker 32 separates from the catcher 34.

After the striker 32 and the catcher 34 are separated from each other, if the force pushing the top surface 6a of the display device 6 is weakened, a spring (not shown) moves the display device 6 to the outside of the main body case 4. At this time, the second moving rail 24 moves with respect to the first moving rail 22, and the display device support frame 26 moves with respect to the second moving rail 24. And finally, manually, as shown in FIGS.
Put it out of the body case 4.

In this state, the display device 6 is oscillated with respect to the display device support frame 26, and the display device 6 is erected so that the display surface 6b of the display device 6 is visually recognized as shown in FIGS. Can be placed at an appropriate angle. The in-vehicle navigation system 2 has a front member 4a,
Since the entire main body case 4 is placed inside the dashboard of the automobile, the vehicle-mounted navigation system 2 can be installed by raising the display device 6 outside as described above.
Information can be confirmed as an image.

FIG. 8A is an enlarged plan view of the striker 32, and FIG. 8B is an enlarged plan view of the catcher 34.
9A is an enlarged front view of the striker 32, FIG. 9B is an enlarged front view of the catcher 34, FIG. 10A is an enlarged bottom view of the striker 32, and FIG.
4 is an enlarged bottom view of FIG. 4, FIG. 11A is an enlarged left side view of the striker 32, and FIG. 11B is an enlarged right side view of the catcher 34.

The striker 32 is provided with a hexagonal hole portion 42 at the bottom surface at one end of the base portion 40. A hexagonal nut is arranged in this hole portion 42 and a through hole penetrating through the inside of the support cylindrical portion 44 on the upper surface side. The striker 32 can be fixed to the connecting plate 28 by screwing a screw from the upper surface side of the connecting plate 28 via 46. A support cylindrical portion 48 is provided on the upper surface side at the other end of the base portion 40, and a circular protrusion 50 is formed at the tip of the support cylindrical portion 48. By fitting the circular protrusion 50 into the fitting hole 28a provided in the connecting plate 28, the rotation of the entire striker 32 is prevented.

A rod-shaped engaging portion 52 projects from the end of the base 40 on the side of the hexagonal hole 42. The tip of the engaging portion 52 is bent downward by 90 ° to form a hook portion 54. In a direction substantially orthogonal to the direction in which the engaging portion 52 projects (corresponding to the inserting direction of the engaging portion), from the end of the base portion 40 on the hole 42 side to the first blocking member 56, 58 are respectively provided so as to project.

Each of the first blocking members 56 and 58 is substantially triangular and has surfaces 56a and 58a facing in the direction in which the engaging portion 52 projects. As shown in the left side view of FIG. 11A, one first blocking member 58 is provided with a reinforcing rib 60 between itself and the support cylindrical portion 44.
This is because the striker 32 is attached at a position deviated from the center with respect to the moving direction of the connecting plate 28, so that the first blocking member 58 on the central side exerts a larger force than the first blocking member 56. This is because it is received from 34.

The catcher 34 is covered with a case 62 whose outer shape is a substantially rectangular parallelepiped. As shown in the right side view of FIG. 11B, the case 62 is provided with an insertion opening 64 for receiving the engagement portion 52 of the striker 32. The circumference of the insertion opening 64 is formed thick to form a second blocking member 66.

Inside the case 62, the catcher body 6
8 are arranged. As shown in FIG. 12, the catcher body 68 is provided with an upper holding piece 70 and a lower holding piece 72. The contact piece 7 is attached to the lower surface 70a of the upper holding piece 70.
4 of the striker 32, the engaging portion 52 of the striker 32 abuts on the abutment piece 74 to attach the catcher main body 68 to the case 6
It can be pushed into 2. Accordingly, when the operation of inserting and returning the engagement portion 52 of the striker 32 to the catcher main body 68 at a position where the switch between lock and release is performed or more is performed, locking and release of the striker 32 is performed for each operation. Can be repeated.

The lock and release operations will be described with reference to FIGS. As shown in FIG. 12, by pushing the display device 6 into the main body case 4, the engaging portion 52 of the striker 32 is pushed into the insertion opening 64 of the catcher 34, and the tip of the engaging portion 52 is brought into contact with the contact piece 74. In contact with each other, the catcher main body 68 is pushed into the case 62 against the pushing back force of the spring 76.

On one side surface of the upper holding piece 70, FIG.
15 to 15, a guide groove 80 as shown in FIGS. 16 to 19 is formed on the other side surface of the upper holding piece 70. Note that the guide groove 80 in FIGS. 16 to 19 shows a state in which the opposite surface of the upper holding piece 70 is seen through for the sake of easy understanding.

The guide grooves 78, 80 are shown in FIG.
The rocking ends 84 and 86 of the guide pin 82 shown in 0 are inserted. As shown in FIGS. 12 to 19, the guide pin 82 is inserted into the case 62 from the back surface portion 62b of the case 62, and the swing support portion 88 is
The case 62 is swingably supported by a back surface portion 62b. Therefore, the swinging ends 84 and 86 have the guide grooves 78 and
It can swing along 80.

In the state before the engaging portion 52 is inserted, the swinging ends 84 and 86 are in the standby position, as shown in FIGS. When the contact piece 74 is pushed by the engaging portion 52, as shown by the arrows in FIGS. 13 and 17, the swinging ends 84, 86 move relative to the catcher main body 68 and are pushed to the maximum. Sometimes, FIG. 13 and FIG.
As shown in FIG. 7, the recesses 7 provided in the guide grooves 78 and 80
8a and 80a are reached. During this movement, each guide groove 7
The branch points S11 and S21 at 8,80 are connected to the swing ends 84,8.
6 passes, but one branch point S11 is the other branch point S
Since the position is deviated from No. 21, it does not branch downward and reaches the recesses 78a and 80a while maintaining the upper route.

Further, the hook-like tip portion 72a of the lower holding piece 72
As the catcher body 68 moves, the lower holding piece 72 is supported by the support portion 72b because the first bottom surface 90 inside the case 62 ascends the tapered portion 92 to reach the second bottom surface 94 which is higher.
The hook-shaped tip 72a engages with the hook 54 of the engaging portion 52 and swings around the center of the lower surface 70a of the upper holding piece 70.
At the same time, the engaging portion 52 is sandwiched and the engaging portion 52 is captured.

At this time, the catcher main body 68 has not reached the innermost portion of the case 62, but the surfaces 56a and 58a of the first blocking members 56 and 58 of the striker 32 abut the second blocking member 66 and are engaged. Since the portion 52 stops, the catcher main body 68 does not move further inward.

Next, the force applied to the top surface 6a of the display device 6 is released, and the display device 6 is returned by the force of a spring (not shown).
At this time, the catcher body 68 and the engaging portion 52 also return at the same time. As a result, as shown in FIG. 14, the swinging end 84 of the guide pin 82 causes the slanted side wall 78 of the guide groove 78.
It collides with b and is guided to the recess 78c. As a result, as shown in FIG. 18, the other swing end 86 is guided by the movement on the swing end 84 side, and the recess 8 of the guide groove 80 is guided.
Move to 0c. In this state, the swinging ends 84 and 86 engage with the recesses 78c and 80c to resist the return force of the spring 76 and stop the catcher main body 68 from further returning.

At this time, since the lower holding piece 72 exists on the second bottom surface 94 which is higher than the lower holding piece 72, the engaging portion 52 is still captured by the catcher 34. Therefore, as shown in FIG. 1, the display device 6 is fixed in the main body case 4, and the storage state of the display device 6 is maintained. That is, the vehicle-mounted navigation system 2 is housed in the dashboard.

When the occupant of the automobile pulls out the display device 6 in order to use the information of the in-vehicle navigation system 2, first, the top surface 6a of the display device 6 is pushed. As a result, the catcher main body 68 is pushed again by the engaging portion 52 and moves to the back of the case 62, but the first blocking member 5
The surfaces 56a, 58a of 6, 58 come into contact with the second blocking member 66 and stop. At this time, as shown in FIGS. 15 and 19, the swinging end 86 of the guide pin 82 is disengaged from the recessed portion 80c of the guide groove 80, and the swinging end 86 collides with the sloped wall 80d facing obliquely downward. As shown by the arrow 19 in the figure, it falls to the lowest portion 80e of the guide groove 80. The other swing end 84 is also guided by the movement of the swing end 86 and falls into the lowest portion 78e of the guide groove 78.

In this state, the occupant can see the top surface 6a of the display device 6.
By releasing, the display device 6 tries to move by receiving a force pushed out from the storage opening 8 by a return spring (not shown) provided inside the main body case 4. At this time, the swinging ends 84 and 86 of the guide pin 82 are located in the lowest portions 78e and 80e, respectively, from the recesses 78c and 80c, so that the catcher main body 68 is pulled by the engaging portion 52 and further pushed by the spring 76. Then, it moves to the right in the figure. At this time, the swinging ends 84 and 86 of the guide pin 82 climb the slopes 78f and 80f of the guide grooves 78 and 80, respectively, and return to the standby positions shown in FIGS. 12 and 16. A groove 62a is formed in the case 62 along the moving direction of the catcher body 68, and a stopper 68a formed on the upper portion of the catcher body 68 slides inside,
When the swinging ends 84 and 86 of the guide pin 82 return to the standby position, the stopper 68a contacts the second blocking member 66, thereby preventing the catcher body 68 from returning further.

In this state, the lower holding piece 72 descends from the taper portion 92, and the case 6 from the second bottom surface 94, which is one step higher.
As it moves to the first bottom surface 90 inside 2, the hook-shaped tip 72
a releases the engagement of the engaging portion 52 with the hook portion 54, and the lower holding piece 72 releases the engaging portion 52. Therefore, the display device 6 can be further pulled out to the state shown in FIGS. 3 and 6, and by raising the display device 6, the display surface 6b of the display device 6 is visually recognized in the states of FIGS. 4 and 7. become able to.

Here, in the present embodiment, when the display device 6 is pushed into the main body case 4 to accommodate the display device 6, the corner portion 78x of the guide groove 78 shown in FIG.
Since the swinging end 84 of the guide pin 82 falling apart from the recess 78a corresponds to the transition from the released state to the locked state, the swinging end of the guide pin 82 is located at the corner portion 78x of the guide groove 78. The push-in position of the engaging portion 52, which is reached by 84, corresponds to the switch insertion position from the release to the lock.

When the display device 6 is once pushed in to be pulled out, the swinging end 84 of the guide pin 82 may fall out of the corner 78y of the guide groove 78 shown in FIG. 15 and fall into the lowest portion 78e. Since it corresponds to the transition from the locked state to the released state, the corner portion 7 of the guide groove 78 is
The push-in position of the engaging portion 52 beyond the 8y position by the swinging end 84 of the guide pin 82 corresponds to the switch insertion position from lock to release.

In this embodiment, the switching insertion position from the release to the lock and the switching insertion position from the lock to the release are set to be the same. In addition,
If the surfaces 56a, 58a of the first blocking members 56, 58 and the second blocking member 66 are brought into contact with each other to prevent the engagement portion 52 from reaching the insertion limit position described below, the release is performed. The switching insertion position from the lock to the lock and the switching insertion position from the lock to the release need not be set at the same position.

In this embodiment, as described above, when the state is switched between the lock and the release, the striker 3
When the second engaging portion 52 is inserted into the catcher 34, the first blocking members 56, 58 and the second blocking member 66 come into contact with each other, so that the engaging portion 52 of the striker 32 is inserted into the catcher 34. Prevent being done.

That is, from the insertion position deeper than the lock / release switching insertion position (corners 78x, 78y), only the engaging portion 52 of the striker 32 is attached to the catcher 34 (this is achieved by inserting the striker 32 into the catcher 34). It means a structure in which there is no structure such as the first blocking members 56 and 58, which is provided in order to prevent any member from colliding with the joint portion 52 and stop.) The engagement portion 52 of the striker 32 is inserted at any insertion position between the insertion limit position, which is an insertion position where the resistance force from the catcher 34 directly acts on the joint portion 52, and the movement is blocked. When inserted into the catcher 34, the first blocking members 56, 58 and the second blocking member 66 come into contact with each other, so that the striker 3 is no longer engaged.
The second engaging portion 52 is prevented from being inserted into the catcher 34.

For example, the striker 32 has the first blocking member 5 attached thereto.
If there is no 6, 58, the first blocking member 5
6 and the second blocking member 66 do not come into contact with each other, the gap 96 portion between the catcher body 68 and the back side inner wall of the case 62, which was present in FIGS. 13, 15, 17 and 19, is also caught by the catcher body 68. Moves and collides with the inner wall on the back side of the case 62. That is, the insertion position of the engaging portion 52 at the time of this collision corresponds to the insertion limit position.

As a result of this collision, the contact piece 7 is attached to the engaging portion 52.
4, the shock is transmitted, and the stress concentrates on the root 52a of the hook 54. If this stress concentration is repeated, deformation or breakage may occur here. Root 5 of hook 54
If 2a is deformed or broken, it will be impossible to switch between lock and release. This engaging portion 52
Has a low degree of freedom in design in order to perform a latch function with the catcher 34, and an improvement for preventing destruction cannot be easily made.

However, in the present embodiment, the first blocking members 56, 58 are provided at the above-mentioned positions instead of the engaging portion 52 itself.
Is specially provided, the degree of freedom in design is higher than that of the engaging portion 52, and the strength can be sufficiently increased. Therefore, stress is not concentrated on the engaging portion 52 due to the contact between the first blocking members 56 and 58 and the second blocking member 66, so that the root 52a of the hook portion 54 can be prevented from being deformed or broken and durability can be improved. It is possible to provide the vehicle-mounted navigation system 2 including a certain latch device.

[Second Embodiment] In the first embodiment,
The striker 3 is attached to the connecting plate 28 that moves integrally with the display device 6.
By attaching 2, the striker 32 was indirectly attached to the display device 6. The in-vehicle navigation system 102 of this embodiment shown in FIGS. 21 and 22.
Then, the striker 132 is directly attached to the display device 106. In the striker 132, at the base of the engaging portion 152, in the direction orthogonal to the inserting direction of the engaging portion 152,
The first blocking members 156 and 158 are projected, and the front side of the catcher 134 (having the same configuration as the catcher 34 of the first embodiment) is used as the second blocking member 166 when locking or releasing. When the display device 106 is pushed in, before the excessive force is applied to the engagement portion 152,
As shown in FIG. 1A and FIG. 22A, the first blocking members 156, 158 and the second blocking member 166 are brought into contact with each other to prevent the engagement portion 152 from being broken.

21 is a perspective view schematically showing the structure of the vehicle-mounted navigation system 102 and showing the inside of the main body case 104, and FIG. 22 is the inside of the main body case 104 of the vehicle-mounted navigation system 102. It is the right view which penetrated and showed.

[Third Embodiment] In the first and second embodiments, the strikers 32 and 132 are directly or indirectly attached to the display devices 6 and 106, and the main body cases 4 and 104 are attached.
Although the catchers 34 and 134 were attached to the side,
As shown in FIG. 3, the catcher 234 may be directly or indirectly attached to the display device 206 side and the striker 232 may be directly or indirectly attached to the main body case 204 side. When switching between the locked state shown in FIG. 23 (a) and the released state shown in FIG. 23 (b), the first blocking member 258 hits the second blocking member 266, which is the front part of the case of the catcher 234. In contact with each other, the same effect as in the first and second embodiments is produced.

However, as in the first and second embodiments,
When the strikers 32 and 132 are directly or indirectly attached to the display devices 6 and 106 and the catchers 34 and 134 are attached to the main body cases 4 and 104, the moving strikers 32 and 132 do not move.
Since it is smaller than 34, it requires less moving space,
In order to reduce the size of the vehicle-mounted navigation system 2 or 102, the first and second embodiments are more advantageous than the present embodiment.

[Fourth Embodiment] FIG. 24 shows another structure of the striker. The striker 332 shown in FIG. 24A is the striker 32, 1 of the first to third embodiments.
32, 232 has the same basic configuration as the engaging portion 35.
First blocking members 356 and 358 are provided at the root of No. 2 in a direction orthogonal to the insertion direction of the engaging portion 352.

The striker 432 shown in FIG.
Although the first blocking members 456 and 458 are provided at the base of the engaging portion 452 in a direction orthogonal to the inserting direction of the engaging portion 452, the first blocking members 456 and 458 are shown in FIG.
They are provided with a 90 ° phase shift compared to 4 (a). The first blocking members 456 and 458 are the body case 4,
Catchers 34, 13 provided on the side of 104, 204
The abutting direction also deviates from the second blocking members 66, 166, 266 of 4, 234 by 90 °.

The striker 532 shown in FIG.
The first blocking member 556 is provided at the base of the engaging portion 552 in a direction orthogonal to the insertion direction of the engaging portion 552. It exists in a state of protruding in all directions.

The striker 632 shown in FIG.
Although the first blocking member 656 is provided at the base of the engaging portion 652 in a direction orthogonal to the insertion direction of the engaging portion 652, the first blocking member 656 exists in a state of protruding in only one direction. Further, as shown in FIG. 24 (e), the striker 732 is provided with a first blocking member 756 at the base of the engagement portion 752 in a brim-like shape in a direction orthogonal to the insertion direction of the engagement portion 752, and has a front surface. You may provide the protrusion part 756a which protrudes in the insertion direction of the engaging part 752 in a ring shape. Figure 24
Compared to (c), the second blocking members 66, 166, 266
Since the contact area with respect to is small, it can be formed with high precision.

Further, as shown in the striker 832 of FIG. 24 (f), the first blocking member 856 is formed in a brim shape in the direction orthogonal to the inserting direction of the engaging portion 852 at the base of the engaging portion 852.
In addition to the above, one or a plurality of protrusions 856a may be provided on the front surface of the first blocking member 856. Figure 24
Compared with (c) and (e), the second blocking members 66 and 16
Since the contact area with 6,266 is small, it can be formed with high precision.

[Fifth Embodiment] A perspective view of FIG. 25 and a sectional view of FIG. 26 show a structure for attaching the catcher 34 to the main body case 4. The body case 4 has a substantially rectangular through hole 9
00 is provided, and a part of the wall material that constitutes the through hole 900 is bent inside the main body case 4 to form the pedestal 902 of the catcher 34.

A screw hole 902a is formed in this pedestal 902.
Is provided, and the screw 906 penetrates the through hole 904 a of the mounting bracket 904 and is screwed into the pedestal 90.
The mounting bracket 904 is fixed to the second member by contacting it from below. The pedestal 902 and the mounting bracket 904 correspond to mounting means.

The wing-shaped pieces 908 and 910 projecting upward on both sides of the fitting 904 have recesses 912 and 914 cut out on the side facing the body case 4. Therefore, by inserting the catcher 34 from the inside of the main body case 4 between the two airfoil pieces 908 and 910 and fitting the engaging protrusions 63a and 63b of the catcher 34 into the recesses 912 and 914, the catcher 34
Can be attached to the body case 4. The tip of one of the wing-shaped pieces 910 is once outside the main body case 4 from the through hole 900 and then bent toward the side opposite to the 90 ° catcher 34, and is almost in close contact with the outer surface of the main body case 4. Therefore, in FIG. 26, the cross section 91 of the bent portion is shown.
0a appears.

Here, as shown in FIG. 26, the wing-shaped piece 90
Vertical size D of the recesses 912, 914 of 8,910
Is larger than the vertical size d of the engaging projections 63a and 63b of the catcher 34. Therefore, the difference (D-
d: For example, about 1 mm), and the catcher 34 is allowed to move in a direction orthogonal to the insertion direction of the engagement portion 52 of the striker 32 (direction of arrow H in the figure), and the main body case 4
Is attached to. Therefore, even if the striker 32 and the catcher 34 have low mounting accuracy, when the striker 32 abuts the catcher 34, the catcher 34 moves to a regular position where insertion resistance is small, and smooth insertion is performed. It is possible to prevent destruction. Therefore, also due to this, the stress is not concentrated on the engaging portion 52, so that it is possible to prevent the root 52a of the hook portion 54 from being deformed or broken, and to provide the in-vehicle navigation system 2 having a durable latch function. be able to.

An elastic body 920 such as a resin sponge is sandwiched between the catcher 34 and the pedestal 902 to urge the catcher 34 upward and to cause the catcher 34 to vibrate when the vehicle is running. To prevent noise and damage.

[Sixth Embodiment] In the fifth embodiment, the engaging projections 63a and 63b of the catcher 34 are fitted in the large-sized recesses 912 and 914, whereby the engaging portion 5 is formed.
Although it was attached to the main body case 4 in a state in which the movement in the direction orthogonal to the insertion direction of 2 was allowed, as shown in FIG. 27 (a), the mounting metal fitting 1008 fixed to the main body case 4 by the base portions 1008b and 1010b, 1010 may be used to secure the catcher 1034.

In this case, the mounting brackets 1008, 101
0 long holes 1008a and 1010a, the stepped screw 101
2,1014 through the mounting bracket 1008,1010
27 is screwed into screw holes 1034a and 1034b provided on the side surface of the catcher 1034 existing between
Attach the catcher 1034 as shown in (b).

The lengths of the long holes 1008a and 1010a are long in the direction in which the striker 32 is allowed to move (that is, the direction orthogonal to the inserting direction of the engaging portion 52 of the striker 32), and the long holes 1008a and 1010a. Since the relationship between the length of 1010a and the thickness of the stepped screws 1012 and 1014 is set according to the allowable movement amount, the same effect as in the fifth embodiment is obtained.

[Others] In the fifth and sixth embodiments, the catcher 34 is arranged so that it can be moved in the vertical direction.
Although an example in which the above-mentioned catcher 34,
134, 234, 1034 and strikers 32, 132,
232, 332, 432, 532, 632, 732, 8
The latch device composed of 32 and the engaging portions 52, 152, 2
Since 52 is sandwiched by the upper holding piece 70 and the lower holding piece 72 from above and below, there is no problem in the latching function with respect to the left and right. Therefore, the catcher 34 cannot be moved on the left and right sides.

However, the catchers 34, 134, 23
4,1034 and strikers 32,132,232,33
When the latch device composed of 2, 432, 532, 632, 732, 832 rotates and has an angle with respect to each of the above-described embodiments, the latch device is inserted with respect to the inserting direction of the engaging portion 52. The pedestal 902 and the mounting bracket 90 are arranged so as to move in directions orthogonal to each other and in accordance with the angle.
4,1008 and 1010 are attached by rotating them by the corresponding angles.

The latch device itself including the catcher and the striker in each of the embodiments is an example,
The present invention can be applied to other latch devices. Further, although the first blocking member is integrally attached to the striker, in the case of such integration, it is preferable to use plastics for the striker. In particular, a composite material of ABS resin and polycarbonate resin is preferable from the viewpoint of moldability, dimensional accuracy, durability and the like.

Further, instead of attaching the first blocking member to the striker, the first blocking member may be attached separately from the striker. For example, the first blocking members 56 and 58 may be attached to another place of the connecting plate 28. In this case, the second blocking member 66 is also attached to the main body case 4
It will be arranged at a position in contact with the first blocking members 56, 58 on the inner surface of the. Further, instead of providing the first blocking member or the second blocking member, for example, the connecting plate 2
8 or the main body case 4, the connecting plate 28 may be brought into contact with the inner surface of the main body case 4 before an excessive force is applied to the engaging portion 52. In this case, the connecting plate 28 corresponds to the first blocking member, and the main body case 4 corresponds to the second blocking member.

In the above-described embodiment, the catcher side is movable in the direction orthogonal to the inserting direction of the engaging portion, but the striker side may be movable. Also, the movement is only in one direction, but it may be in multiple directions as long as it is a direction orthogonal to the direction in which the engaging portion is inserted.

Although each of the above-described embodiments is an on-vehicle navigation system,
The display device may be applied to a device that moves in and out of the case, or the display device of a small computer may be applied to a device that moves in and out of the case.

[Brief description of drawings]

FIG. 1 is an external perspective view of a vehicle-mounted navigation system according to a first embodiment.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a cross-sectional view of a state in which the display device according to the first embodiment is pulled out.

FIG. 4 is a cross-sectional view of a state in which the display device according to the first embodiment is raised.

5 is a cross-sectional view taken along line BB of FIG.

FIG. 6 is a cross-sectional view of a state in which the display device according to the first embodiment is pulled out.

FIG. 7 is a cross-sectional view of a state in which the display device according to the first embodiment is raised.

FIG. 8 is an enlarged plan view for explaining the striker and the catcher according to the first embodiment.

FIG. 9 is an enlarged front view for explaining the striker and the catcher according to the first embodiment.

FIG. 10 is an enlarged bottom view for explaining the striker and the catcher according to the first embodiment.

FIG. 11 is an enlarged side view for explaining the striker and the catcher according to the first embodiment.

FIG. 12 is an explanatory diagram showing the operation of the latch mechanism according to the first embodiment.

FIG. 13 is an explanatory diagram showing the operation of the latch mechanism according to the first embodiment.

FIG. 14 is an explanatory diagram showing the operation of the latch mechanism according to the first embodiment.

FIG. 15 is an explanatory diagram showing the operation of the latch mechanism according to the first embodiment.

FIG. 16 is an explanatory diagram showing the operation of the latch mechanism according to the first embodiment.

FIG. 17 is an explanatory diagram showing the operation of the latch mechanism according to the first embodiment.

FIG. 18 is an explanatory diagram showing the operation of the latch mechanism according to the first embodiment.

FIG. 19 is an explanatory diagram showing the operation of the latch mechanism according to the first embodiment.

FIG. 20 is an explanatory diagram of a configuration of a guide pin according to the first embodiment.

FIG. 21 is a perspective view for explaining the configuration of a vehicle-mounted navigation system according to a second embodiment.

FIG. 22 is a side view for explaining the configuration of a vehicle-mounted navigation system according to a second embodiment.

FIG. 23 is a side view for explaining the configuration of a vehicle-mounted navigation system according to a third embodiment.

FIG. 24 is a perspective view for explaining various structural examples of a striker according to a fourth embodiment.

FIG. 25 is a perspective view for explaining the attachment structure of the catcher to the main body case according to the fifth embodiment.

FIG. 26 is a sectional view for explaining the attachment structure of the catcher to the main body case according to the fifth embodiment.

FIG. 27 is a perspective view for explaining the attachment structure of the catcher to the main body case according to the sixth embodiment.

[Explanation of symbols]

2 ... In-vehicle navigation system 4 ... Main body case 4a ... Front member 4b ... Back side wall part 6 ... Display device 6a ... Top surface 6b ... Display surface 8 ... Storage port 10 ... IC card insertion port 12 ... Lid 14 ... Lid
16 ... Circuit board 18 ... IC card slot 20 ... Hard disk 22 ... First moving rail 24 ... Second moving rail 2
5 ... Connection plate 26 ... Display device support frame 28 ... Connection plate 28a ... Fitting hole 30 ... Interface circuit boards 32, 132, 232, 332, 432, 532, 63
2, 732, 832 ... Strikers 34, 134, 234, 1034 ... Catcher 40 ... Base 42 ... Hole 44 ... Support cylinder 4
6 ... Through hole 48 ... Support cylindrical portion 50 ... Circular protrusion 52, 15
2, 252 ... Engaging portion 52a ... Root 54 ... Hook portion 56, 58 ... First blocking member 56a, 58a ... Surface 60 ... Reinforcing rib 62 ... Case 62a ... Grooves 63a, 63b ... Engaging projection 64 ...
Insertion ports 66, 166, 266 ... Second blocking member 68 ... Catcher body 68a ... Stopper 70 ... Upper holding piece 70a ... Lower surface 72 ... Lower holding piece 72a ... Hook-like tip portion 72b ...
Support portion 74 ... Abutting piece 76 ... Spring 78, 80 ... Guide groove 78 ... Guide groove 78a, 80a ... Recessed portion 78c, 80c ... Recessed portion 7
8e ... lowest part 78f, 80f ... slope 78x ... corner 78y ... corner 80 ... guide groove 80c ... recess 80d ... slope wall
80e ... Lowest part 82 ... Guide pins 84, 86 ... Swing end 88 ... Swing support part 90 ... First bottom surface 92 ... Tapered part 94 ... Second bottom surface 96 ... Gap 102 ... Car navigation system 104 ... Main body case 106 ... Display devices 156, 158 ... First blocking member 2
04 ... Main body case 206 ... Display device 234 ... Catcher 258 ... First blocking member 266 ... Second blocking member 352
... Engagement portions 356, 358 ... First blocking member 452 ... Engagement portions 456, 458 ... First blocking member 552 ... Engagement portion 55
6 ... 1st blocking member 652 ... Engagement part 656 ... 1st blocking member 752 ... Engagement part 756 ... 1st blocking member 756a ... Projection part 852 ... Engagement part 856 ... 1st blocking member 856a ... Projection part 900 ... Penetration Hole 902 ... Receiving base 902a ... Screw hole 904, 1008, 1010 ... Mounting metal fitting 904a ... Through hole 906 ... Screw 908, 910 ... Wing-shaped piece 910a ... Section of bent part 912 of wing-shaped piece
914 ... Recessed portion 920 ... Elastic body 1008a, 1010a ... Long holes 1008b, 1010b ... Base portion 1012, 1014 ...
Stepped screws 1034a, 1034b ... Screw holes S11, S21 ... Branch points

─────────────────────────────────────────────────── --Continued from the front page (56) References JP-A-4-213679 (JP, A) JP-A-3-197782 (JP, A) JP-A-5-105003 (JP, A) JP-A-9- 184346 (JP, A) JP-A-6-171440 (JP, A) JP-A-9-11809 (JP, A) Actually open Sho-49-84497 (JP, U) Actually open-up Sho 61-25471 (JP, U) Actually open 54-74698 (JP, U) Actually open 59-160767 (JP, U) Actually open 52-139021 (JP, U) Actually open 1-173275 (JP, U) Actually open 5-24456 (JP, U) Actual development 52-17299 (JP, U) Actual development 1-171877 (JP, U) Actual public 50-5517 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷⁾ , DB name) E05C 19/02 B60R 11/02 H04N 5/64 521

Claims (11)

(57) [Claims] 1. A striker that interlocks with the movement of any one of a display device storage case and a display device that can be put in and taken out of the display device storage case, and the other movement of the display device storage case and the display device. When the operation of inserting and returning the engagement portion of the striker up to the switching insertion position of lock and release with respect to the catcher is performed with respect to the catcher, locking and release of the striker are performed for each operation. And a first blocking member that is provided outside the engagement portion of the striker and that interlocks with the movement of the striker, and a second blocking member that is provided outside the inside of the catcher and that interlocks with the movement of the catcher. A latching device including: a striker engaging portion of the striker from the insertion position deeper than the switching insertion position. When the striker is inserted after being moved, the striker is engaged at any insertion position between the insertion limit position and the insertion limit position where the resistance force from the catcher directly acts on the engagement part to prevent the movement. When the portion is inserted into the catcher, the first blocking member and the second blocking member come into contact with each other to prevent the engagement portion of the striker from being inserted into the catcher. Latch device. 2. The first blocking member is present in the periphery of the striker in a direction orthogonal to the insertion direction of the engagement portion of the striker in a state of interlocking with the movement of the striker. The latch device according to claim 1. 3. The first blocking member is formed so as to project from the striker in a direction orthogonal to the insertion direction of the engagement portion of the striker, and has a surface facing in the insertion direction of the engagement portion of the striker, The latch device according to claim 1 or 2, wherein the latch device is brought into contact with the second blocking member. 4. The first blocking member includes a first protrusion formed to project from the striker in a direction orthogonal to an insertion direction of an engagement portion of the striker, and a first protrusion in an insertion direction of the engagement portion of the striker. The latch device according to any one of claims 1 to 3, further comprising: a second protrusion that protrudes from the first protrusion and has a tip end thereof brought into contact with the second blocking member. 5. The latch device according to claim 1, wherein the first blocking member is formed integrally with the striker. 6. The second blocking member is present with respect to the catcher around the periphery of a direction orthogonal to the insertion direction of the engagement portion of the striker in a state of interlocking with the movement of the catcher. The latch device according to any one of claims 1 to 5. 7. The second blocking member is formed around the insertion opening of the catcher into which the engaging portion of the striker is inserted, and the tip end portion facing the striker is brought into contact with the first blocking member. The latch device according to any one of claims 1 to 6, characterized in that: 8. The latch device according to claim 1, wherein the second blocking member also serves as part or all of the case of the catcher. 9. A display device can be manually inserted and removed from the display device storage case.
8. The latch device according to any one of 8 . Wherein said display device includes a latch device according to any one of claims 1-9, characterized in that for displaying information in the navigation system. 11. The display device storage case also serves as a part or the whole of a navigation system main body case in which a hardware configuration of a navigation system is stored, in addition to a storage portion of the display device. Item 10. A latch device according to item 10 .