JPS6217565Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to improvements in locking devices for tail gates and back doors used in vehicles, particularly vans and trucks.

Conventionally, this type of tail gate locking device has one lever rotatably attached to the tail gate via a pin so that it can be locked on the body side at both ends of the tail gate. It is configured to operate latches attached to both ends of the tail gate by means of connecting rods attached above and below the pin.

In addition, the back door rotatably placed above the tail gate can also be locked at the same time by attaching latches at each end of the tail gate and three sides near the top of the center, as described above. A single lever operates the latches at both ends via a connecting rod, and almost simultaneously with the rotation of that lever, other levers, links, etc. is installed.

Therefore, the tail gate locking device thus constructed does not have the functional effect of enabling locking and unlocking of the tail gate at both end positions by operating a single lever. However, the size and rotation angle of the lever are closely related to the stroke of the latch, and the size and rotation angle of the lever must be adjusted in order to retract the latch into position for unlocking. If the latch is made relatively small, the angle of rotation must be sufficient, or the latch may be rotatably mounted on the tailgate, and the latch may be formed with a long arm and a connecting rod attached to the long arm. In order to make it possible to operate the lever even if the rotation angle is small,
It was necessary to mount the connecting rod away from the center of rotation, and the entire lever had to be made long.

In addition, this type of tail gate locking device is located inside the tail gate, that is, between the outer panel and the inner panel of the tail gate, and is located through a service hole formed in the inner panel. In many cases, the lever and connecting rod must be installed, and for this purpose, it is desirable to shorten the overall length of the lever to form a small service hole, and considering its operability and locking function. , it is desirable to place it near the upper part of the tailgate. However, since the upper space inside the tailgate is generally narrow, when using such a lever, it is necessary to avoid the connecting rod connected to the upper end of the lever from interfering with the outer and inner panels. However, the arrangement of the connecting rod was extremely difficult due to the structure of the tail gate.

"Lock device for rear vertically swinging doors in automobiles"
This locking device is disclosed in which a center latch for the back door is released by a depressing movement of the handle, and a pair of side latches for the tail gate are released by a rotational movement of the handle. Since the locking mechanism is designed to be released by pressing the button, it is difficult to operate the locking device, and the locking mechanism of the locking device is complicated.

Furthermore, Japanese Utility Model Publication No. 35-3068 discloses a locking device for a double-hung door, in which a pair of L-shaped arm levers lock each bent portion of the door into a locking device. Since it is rotatably supported, it is difficult to make it compact, and in addition, there are many rotatably connected parts, which tends to make assembly difficult.

The purpose and problem of this invention was to facilitate the opening and closing operations of the tail gate and back door, and
When the tail gate and back door are closed, the tail gate is locked to the body on both sides and the back door
At its lower end, the door is securely locked into the tailgate, which is already locked on the body side, and when opening these backdoors and tailgate, the rear door and tailgate can be opened with a simple operation.
It is possible to release the locked state of the door and the locked state on both sides of the tail gate almost simultaneously, and furthermore, it is possible to place it near the upper part of the tail gate, improving operability and locking function. The tail of the vehicle has a simple structure, prevents trouble during operation, and makes assembly simple and easy.
Our company provides gate and back door locking devices.

With these issues in mind, the vehicle tail gate and back door locking device of this invention is
The long arm and the short arm are bent into an approximately L shape, and an approximately
a pair of swinging levers having a letter shape and rotatably supported by overlapping their bent portions;
There is an operating handle that pushes the short arm of the swinging lever, one end is attached to the operating handle, and the other end is attached to the tail.
The handle return springs are fixed on each side of the gate, and the long swinging lever is arranged on both sides of the tail gate so that it can protrude from both sides of the tail gate, and the long swinging lever is attached via a horizontal connecting rod. a pair of side latches connected to the arm; and a pair of side latches capable of protruding from the upper surface of the tail gate, disposed above the tail gate, and connected to the operating handle side via a vertical connecting rod. a center latch, and a pair of side strikers disposed on the body capable of receiving and facing the side latches when the tail gate is closed;
Above the tailgate, the center latch is receptive when the back door to be opened and closed is closed.
A center striker located at the lower end of the back door facing the latch, and a center striker located between the side latch and the tail gate side so that the side latch projects to the side of the tail gate. side latch return
and a center latch return spring disposed between the center latch and the tail gate side so as to project the center latch above the top surface of the tail gate. ing.

Hereinafter, preferred embodiments of the vehicle tail gate and back door locking device according to the present invention will be described with reference to the drawings.

1 to 6 show a specific example 10 of the tail gate and back door locking device of this invention applied to a wagon 50. FIG.

The wagon 50 is equipped with a tail gate 1 via hinges 52 and 53 so that substantially the lower half of the body 51 can be closed off at the rear of the body 51.
1 is rotatably attached, and its body 5
A flip-up type back door 54 is attached to the rear upper end of the hinge 5 so as to close almost the upper half of the back door 54.
It is rotatably attached via 5 and 56.

That is, the rear of the body 51 of the wagon 50 is the tail gate 11 and the back door 54.
The tail gate 11 and the back door 54 are configured to be opened downward and upward, respectively, when loading and unloading cargo.
1 is fitted with a locking device 10 for keeping the tail gate 11 itself and the back door 54 closed at the same time.

The tail gate and back door locking device 10 is formed by bending a long arm and a short arm into a substantially L shape, and has a tail gate and a back door locking device 10.
A pair of swing levers 12 and 13 are formed into a substantially X-shape inside the gate 11 and are rotatably supported with their bent portions overlapped, and the swing lever 1
Operation handle 14 that pushes short arms 2 and 13
, a handle return spring 15 whose one end is fixed to the operating handle 14 and the other end is fixed to the tail gate 11 side, and the tail
The swing levers 12 and 13 are arranged on both sides of the tail gate 11 so as to be able to protrude from both sides of the gate 11, and are connected to the swing levers 12 and 13 via the horizontal connecting rods 19 and 20.
A pair of side latches 17, 18 are connected to the long arms of the tail gate 11, and the side latches 17, 18 are disposed above the tail gate 11 so as to be able to protrude from the upper surface of the tail gate 11, and are connected via a vertical connecting rod 22. Center latch 2 connected to the operating handle 14 side
1, a pair of side strikers 23 arranged on the body 51 facing the side latches 17, 18 so that the side latches 17, 18 can be received when the tail gate 11 is closed; 24 and above the tail gate 11, the center latch 21 can be received when the back door 54, which is opened and closed, is closed, and the center latch 21 of the back door 54 facing the center latch 21 can be opened and closed. Center striker 25 located at the lower end and its side latch 1
side latch return springs 26, 27 disposed between the side latches 17, 18 and the tail gate 11 side so as to cause the side latches 7, 18 to protrude from the sides of the tail gate 11;
and the center latch 21 so as to protrude from the top surface of the tail gate 11.
The structure includes a center latch return spring 28 disposed between the latch 21 and the tail gate 11 side thereof.

The components of the locking device 10 except the side strikers 23, 24 and the center striker 25, namely the swing levers 12, 13, the operating handle 14, the handle return spring 15, the side latches 17, 18, the center Latch 21, side latch return springs 26, 27, and center latch return springs 26, 27.
The spring 28 is the outer part of the tail gate 11.
It is arranged between panel 57 and inner panel 58.

The swing levers 12 and 13 are each formed into a substantially L-shape from a long arm and a short arm,
Each bent portion has a pin bore 29,
30, holes 31 and 32 are formed at the tips of the long arms, and the tips of the short arms are formed in an arc shape.

The rocking levers 12, 13 thus formed
3, the pin 33 is inserted into each of the pin bores 29, 30.
That is, the rocking levers 12, 13 are substantially X-shaped, and the bent portions are overlapped so that the pin bores 29, 30 are aligned with each other, and the pin bores 29, 30 are fitted into the pin 33, so that the rocking levers 12, 13 are rotatably supported by the pin 33.

The operating handle 14 has a pair of substantially U-shaped legs 35 and 36 integrally formed at both ends of the cross plate 34 in a direction perpendicular to the cross plate 34. , a pair of pressing plates 37 and 38 are integrally formed at an appropriate interval, and a substantially L-shaped arm 39 is integrally protruded from approximately the center of the cross plate 34 on the outside. The entire arm 39 is bent inwardly and upwardly, and the tip thereof is bent upward. A hole 40 is formed at the tip of the arm 39, and a hole 40 is formed at the base side of the legs 35, 36. is pin bore 41,4
2, and furthermore, the legs 35,
The lower ends of 36 are each bent outward, and holes 43 and 44 are formed in these portions.

A handle 46 is attached to the legs 35, 36 of the operating handle 14 formed in this manner so as to extend over the lower ends of the legs 35, 36.

That is, the grip 46 is formed by integrally protruding pillars 48 and 49 at an appropriate interval from the back surface of a grip plate 47, and screw holes (not shown) are provided at the tips of each pillar 48 and 49. The screws 60, 60 are passed through the legs 35, 36 of the operating handle 14, and the strut 4 of the handle 46 is
8 and 49, respectively.

Swing lever 12, 1 formed in this way
3 and the operating handle 14 are attached to the inner panel 58 of the tail gate 11 by means of a bracket 45.
can be attached to the back of the

The bracket 45 is bent with its substantially central portion protruding towards the front side, that is, towards the outer panel 57 side, to form a swing lever mounting surface 62. The support arms 63 and 64 are bent in this manner, and the main body 6
At the lower ends of both sides of 1, there are hook-shaped mounting legs 65, 6.
6 is integrally formed to protrude.

Screw holes 67, 68 and 69, 70 are formed on both sides of the bracket 45 and in the hook-shaped mounting legs 65, 66, respectively, and a pin bore 71 is formed approximately in the center of the swing lever mounting surface 62.
However, pin bores 72 and 73 are further formed at the distal ends of the support arms 63 and 64, respectively.

Furthermore, a hook 74 is formed on the side surface of the hook-shaped mounting leg 65 of the bracket 45 by cutting a portion of the leg inwardly.

To attach the swing levers 12, 13 and the operating handle 14 to the bracket 45 formed in this way, first align the pin bores 29, 30 of the swing levers 12, 13, and then insert the pin 3.
3 through the bracket 45, and then insert the tip of the pin 33 into the bracket 45.
Pass it through the pin bore 71 formed in the swing lever mounting surface 62 of the holder and caulk it on the back side.

Next, the support arm 63 of the bracket 45,
64, and insert the pin 75 from one side so that the pin bores 72, 73 of the support arms 63, 64 are aligned with the pin bores 41, 42 of the operation handle 14, and insert the pin 75 from one side. An E-ring 77 is fitted into a groove 76 cut out at the tip of the pin 75 on the outside of the support arm 64.

When inserting the pin 75, a coiled handle return spring 15 is inserted in advance inside one leg 35 of the operating handle 14, and one of the handle return springs 15 is inserted into the leg 35 of the operating handle 14. The leg 35 of the operating handle 14 is hooked onto the base side, and the other end is hooked onto the hook 74 formed on the hook-shaped mounting leg 65 of the bracket 45.

Of course, the operating handle 14 installed in this way can only open the back door 54,
After the back door 15 is opened, in order to open the tail gate 11, the lower surfaces of the pressing plates 37, 38 and the upper ends of the swing levers 12, 13 are placed at a predetermined position with an appropriate distance between them. The operation handle 14 is arranged so as to be held at the position of
When pulled toward the user and rotated to a predetermined angle, the arm 39 returns to its center latch 21 against its handle return spring 15 and center latch return spring 28.
When the locking bar 79 is pulled down to release the center latch 21, and the operating handle 14 is pulled forward and rotated to a predetermined angle, the pressing plate 37 ,38
The lower surface of the swing levers 12 and 13 contact the upper ends of the short arms, and when the operating handle 14 is further pulled toward the front, the pressing plates 37 and 38 Push down the short arm and its swing levers 12, 13
The structure was such that the lower ends of the arms, that is, the tips of the long arms, were rotated so that they were brought close to each other.

Therefore, the operation handle 14 and the swing lever 1
2, 13, the pressing plate 3
In order to maintain a predetermined distance between the upper ends of the swing levers 12 and 13, stopper pins (not shown) are installed at appropriate positions of the levers 7, 38 and the upper ends of the swing levers 12, 13. Lever 1
2 and 13 are regulated.

Of course, if you let go of the operating handle 14 after it has been pulled, the handle
It is returned to its original stopped state by a return spring 15.

The side latches 17, 18 have a flanged latch holder 78 and its latch holder 78.
A wedge-shaped tip 80 is slidably disposed inside the latch holder 78, and a wedge-shaped tip 80 is placed outside the flange 81 of the latch holder 78, and a rear end formed with a connecting rod attachment elongated hole 82 is placed outside from the rear of the latch holder 78. The latch holder 78 is provided with a latch stopper 83 on its flange 81 side.

That is, the latch stopper 83 is integrally bent from the outside to the inside so as to cover the distal end of the locking bar 79 at an appropriate interval.

Side latch 1 constructed in this way
Side latch return springs 26 and 27 are installed in the latch holders 78 and 78, respectively, so that the tips 80 of the locking bars 79 project outward.

That is, the side latch return springs 26 and 27 are passed through the locking bar 79, and one end thereof is located on the tip side of the locking bar 79, and the other end is located on the bottom wall of the latch holder 78, respectively. It has been installed.

The center latch 21 is the side latch mentioned above.
It has the same structure as the latches 17 and 18, and the constituent parts corresponding to the side latches 17 and 18 are given the same reference numerals, and the explanation of their structure will be omitted.

Of course, inside the latch holder 78 of the center latch 21 is the tip 8 of the locking bar 79.
A center latch return spring 28 is attached so that the center latch return spring 28 projects outward.

That is, the center latch return spring 28 is passed through the locking bar 79,
One end of the locking bar 79 is located at the tip of the locking bar 79, and the other end is located at the bottom wall of the latch holder 78.

Locking of the side latches 17 and 18
Side strikers 23, 24 receiving bars 79, 79 have their side latches 17, 18
It is formed into a box shape with one side open so as to receive the latch stoppers 83 and 83, and flanges 84 and 85 are formed on the upper and lower sides, and the tip 80 of the locking bar 79 is attached to the side surface of the box. Each has a hole 86 into which it is fitted.

In addition, the center striker 25 that receives the locking bar 79 of the center latch 21 is
Since it is configured similarly to the side strikers 23 and 24 described above, the side striker 2
Components corresponding to 3 and 24 are given the same reference numerals, and explanations of those components will be omitted.

The horizontal connecting rods 19 and 20 have a rod 87 with one end threaded and the other end bent into a substantially U-shape, a threaded hole 90 formed in a substantially L-shaped plate 89, and a hook 91 integrated into one end of the rod 87. The adjusting mechanism 88 is fitted around the hook 91 of the adjusting mechanism 88, and the holes 31 of the swing levers 12, 13 are fitted at one end.
The clip 92 is made of synthetic resin and has a protrusion 93 that is fitted into the clip 32.

The vertical connecting rod 22 is configured such that its lower end can be hooked into a hole 40 formed in the arm 39 of the operating handle 14, and its upper end can be hooked into a connecting rod attachment elongated hole 82 formed in the locking bar 79 of the center latch 21. , its upper and lower ends are bent into a hook shape.

Of course, the vertical connecting rod 22 may be configured such that the lower end of the locking bar 79 of the center latch 21 is extended and the lower end is hooked into the hole 40 formed in the arm 39 of the operating handle 14.
In that case, it is desirable that the hole 40 formed in the arm 39 be formed into a long hole.

Next, a method of attaching the lock device 10 to the tail gate 11 of the wagon 50 will be explained.

First, the bracket 45 to which the operating handle 14 and the swing levers 12, 13 are attached as described above is positioned above the center on the back side of the inner panel 58, and the screws 94 are inserted from the front side of the inner panel 58. , 94 and tighten into the screw holes 67, 68 of the bracket 45.

Further, the hook-shaped mounting legs 65 and 66 of the bracket 45 are attached to the inner panel 58 in advance.
It is overlapped with a welded bracket (not shown) protruding from the back surface of the bracket and fixed with screws.

Of course, the screw fixing work is done on the outer
A hole (not shown) formed in the panel 57 is utilized.

The vertical connecting rod 22 has its upper end hooked in advance to a connecting rod attachment elongated hole 82 formed in the locking bar 79 of the center latch 21, and its lower end is hooked into a hole 40 formed in the arm 39 of the operating handle 14.
hook it on.

Of course, when the lower end of the vertical connecting rod 22 is hooked into the hole 40, the horizontal connecting rods 19, 2
A clip (not shown) is used as in case 0.

Further, at the lower center of the outer panel 57 attached to the outside of the inner panel 58, that is, at the position corresponding to the legs 35, 36 of the operating handle 14, there is provided a panel so that the operating handle 14 can be operated from the outside. forming a hole (not shown);
Screws 6 are inserted into the holes 43 and 44 at the tips of the legs 35 and 36 that protrude from the holes to the outside of the outer panel 57.
0,60 through the posts 48,49 of the grip 46
screwed into the tip of each.

The work of screwing the handle 46 is done in advance using a service hole (not shown) formed in the inner panel 58 near the position where the bracket 45 is attached.

Locking device 10 thus installed
If the handle 46 of the handle 46 is pulled forward, the operating handle 14 is rotated about the pin 75, and the vertical connecting rod 22 is pulled by the arm 39 integrally attached to the operating handle 14. The tension center latch 21 is unlocked and the back
Only the door 54, not shown, is attached to the wagon 5.
0 is equipped with a spring or a stay.
It is pushed out by a damper-like means and placed in a state where it can be opened and closed. Of course, if you release your hand from the operating handle 14 in this state, the operating handle 14
is returned to its original position by its handle return spring 15.

Thereafter, when the operating handle 14 is further rotated, the pressing plates 37 and 38 are moved to the swing levers 12 and 1.
Touch the upper ends of 3 and press down so that the upper ends open outward.

When the upper ends of the swing levers 12 and 13 are pushed down, the swing levers 12 and 13 rotate in opposite directions around the pin 33, and the swing lever 1
The respective lower ends of 2 and 13 move closer to each other.

When the swing levers 12, 13 are rotated in this manner, the horizontal connecting rods 19, 20 connected to the lower ends of the swing levers 12, 13 are pulled, respectively, and the side connecting rods 19, 20 connected to the lower ends of the swing levers 12, 13 are pulled. - The latches 17, 18 are unlocked and the tailgate 11 is opened via the hinges 52, 53.

Of course, if you let go of the handle 46, the handle
It is returned to its original state by the return spring 15 and the side latch return springs 26, 27 of the side latches 17, 18, and in this state, if the tail gate 11 is pressed to close, the inside of the latch will be released. The body 51 is secured by the wedge-shaped tips 80 of the locking bars 79, 79.
Side striker 23 attached to the side,
When the locking bar 79 is gradually retracted inward while making contact with the sides of the side strikers 24, and reaches the position where it is completely fitted into the holes 86, 86 of the side strikers 23, 24, the side latch return
Under the action of the springs 26, 27, the locking bars 79, 79 are again projected and placed in the holes 86, 86 of the side strikers 23, 24, and the tail gate 11 is locked.

At this time, the stoppers 83, 83 attached to the outside of the side latches 17, 18 are housed within the side strikers 23, 24, and with the tail gate 11 locked, the inner surfaces thereof are attached to the side strikers 23, 24. 23 and 24 to prevent the tail gate 11 from being pushed in more than necessary.

Of course, when closing the back door 54, simply pressing the back door 54 will cause the locking bar 79 of the center latch 21 attached to the tail gate 11 to be attached to the back door 54 side. It is stored in the center striker 25 and locked in the same manner.

According to the above invention, a pair of swinging levers are formed by bending a long arm and a short arm into a substantially L shape, and are formed into a substantially X shape within the tail gate, The operating handle pushes the short arm of the swing lever, and the handle return spring is fixed at one end to the operating handle and at the other end to the tail gate. A pair of side latches are projectable on opposite sides of the tailgate and are located on either side of the tailgate and are connected to the long arm of the swing lever via a transverse connecting rod, and・
A latch is projectable from the upper surface of the tail gate and is disposed above the tail gate and connected to the operating handle side of the tail gate via a vertical connecting rod, and a pair of side strikers are arranged on the tail gate of the tail gate. With the gate closed, the side latch is receptive, and the center striker is placed on the body facing the side latch.
Above the tailgate, the center latch is receptive when the back door to be opened and closed is closed.
Located at the bottom edge of the back door facing the latch, the side latch return spring
The center latch is disposed between the side latch and the tail gate side so that the side latch protrudes to the side of the tail gate, and a center latch return spring causes the center latch to protrude to the side of the tail gate. Since the center latch and the tail gate side are arranged so as to protrude from the top surface of the tail gate, the structure that rotatably connects the parts is simplified, and the short swing lever By setting an appropriate distance between the arm and its operating handle, it becomes possible to easily eliminate the idle swing mechanism, and as a result, the number of rotatably connected parts is reduced, making assembly easier. The rear door and the tail gate can be opened easily and compactly, and the opening of the back door and tail gate is made possible by the same direction of operation of the handle, thus improving ease of operation and reducing the number of operations. In particular, when the tail gate and back door are closed, the operating handle is returned by its handle return spring and the short arm of the swing lever is At the same time, its vertical connecting rod is not pulled down by its operating handle, its side latch is pushed into its side striker by its side latch return spring, and its tail
The gate is securely locked into its body on both sides, while its center latch is pressed into its center striker with its center latch return spring, and its back door is locked into its locked tail. When the back door and tail gate are locked to the gate, and the back door and tail gate are opened, the locked state of the back door and the locked state of both sides of the tail gate are released almost simultaneously by pulling up the operating handle, The opening and closing operations of the back door and tail gate are facilitated, and the long arm of the swinging lever connects the horizontal connecting rod for the side latch to release the side latch. The operating stroke of the operating handle is reduced by the short arm of the swinging lever, and accordingly, the swinging range of the swinging lever is within a certain range. space in the tailgate can be utilized effectively, especially the long arm of the swing lever extending below the point that rotatably supports the swing lever. operates the latch, so if a bent connecting rod is used to connect the long arm to the latch, the operating handle and latch can be placed higher up on the tailgate and the device The operability and lock function have been improved.
Furthermore, the installation work of the horizontal connecting rod, vertical connecting rod, and swing lever is facilitated, and the service hole formed in the inner panel of the tail gate can be made smaller, making it easier to install the entire tail gate. It looks better and is more practical.

[Brief explanation of the drawing]

Fig. 1 is a rear view of a wagon to which the vehicle tail gate and back door locking device according to the present invention is applied, and Fig. 2 is a part showing a part of the inside of the outer panel of the tail gate in Fig. 1. Figure 3 is an enlarged front view, Figure 3 is a side view showing the state in which the swing lever and operating handle are attached to the bracket, Figure 4 is
The figure is a partially exploded perspective view of a vehicle tail gate and back door locking device according to this invention, FIG. 5 is a perspective view showing the assembled state of FIG. 4, and FIG. 6 is a side latch and side latch. FIG. 3 is a perspective view showing the attached state of the striker. 10...Vehicle tail gate and back
Door locking device, 11...Tail gate, 1
2, 13... Swing lever, 14... Operation handle, 15... Handle return spring,
17,18...Side latch, 19,20...
Horizontal connecting rod, 21... Center latch, 22... Vertical connecting rod, 23, 24... Side striker,
25... Center striker, 26, 27...
Side latch return spring, 28...
...Center latch return spring, 51
...Body, 54...back door.

Claims (1)

[Claims for Utility Model Registration] A long arm and a short arm are bent into a substantially L-shape, and the tail gate is formed into a substantially X-shape, and the bent portions are overlapped to rotate. a pair of swinging levers that are supported so as to be able to move; an operating handle that pushes the short arm of the swinging lever; a handle return spring that is fixed at one end to the operating handle and at the other end to the tail gate; a pair of side latches projectable from both sides of the tail gate, located on both sides of the tail gate, and connected to the long arms of the swing lever via a transverse connecting rod; so that it can protrude from the top surface of the tail gate,
a center latch located above the tailgate and connected to the operating handle side via a vertical connecting rod; and a center latch adapted to receive the side latch when the tailgate is closed. a pair of side strikers disposed on the body facing the side latches; , its center
A center striker located at the lower end of the back door facing the latch, and a center striker located between the side latch and the tail gate side so that the side latch projects to the side of the tail gate. The side to be
a latch return spring; a center latch disposed between the center latch and the tail gate side so as to cause the center latch to protrude above the top surface of the tail gate;
Vehicle tailgates and backrests, including latch return springs.
Door locking device.