JPH0118769Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to improvements in tail gate locking devices 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 to the body side at both ends of the tail gate. The latches attached to both ends of the tail gate are operated by connecting rods attached above and below the pin of the tail gate.

Therefore, the tail gate locking device thus constructed has no functional effect such as 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 lock 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.

Furthermore, Japanese Utility Model Application Publication No. 53-28097 discloses a "door closing device" in which a pair of latches, a handle, and a pair of connecting pieces are rotatably connected at each location. and a pair of tension springs acting on the latch in the release direction are disposed between the latch and the shaft of the handle, forming a toggle mechanism in which the latch and handle are not separated. There is a problem with the reliability of the lock.

Furthermore, Japanese Utility Model Publication No. 35-3068 discloses a "locking device for double-hung doors," and this locking device uses a pair of L-shaped arm levers to open the door at each bent portion. Since it is rotatably supported by the holder, it is difficult to make it compact.Furthermore, there are many rotatably connected parts, which tends to make assembly difficult.

The purpose and problem of this invention is to facilitate the opening and closing operation of the tail gate, and to ensure that both sides of the tail gate are securely locked to the body when the tail gate is closed.
When opening the tail gate, the lock status on both sides of the tail gate can be released at the same time with a simple operation, and it can also be placed near the top of the tail gate to improve operability and lock function. In addition, the tail gate lock of a vehicle is improved by simplifying the connection structure between parts, preventing trouble during operation, and making it compact and easy to assemble. The purpose is to provide equipment.

In order to solve these problems, the tail gate lock device of this invention is formed by bending a long arm and a short arm into a substantially L shape, and has a substantially X shape inside the tail gate. A pair of swinging levers that are rotatably supported by overlapping their bent parts, an operating handle that pushes the short arm of the swinging lever, one end fixed to the operating handle, and the other end fixed to the tail gate side. a pair of handlebar return springs arranged on both sides of the tailgate and connected to the long arm of the swing lever via a connecting rod; a latch, a pair of strikers disposed on the body facing the latch, receptive to the latch when the tail gate is closed; The latch includes a latch return spring disposed between the latch and the tail gate side.

Hereinafter, preferred embodiments of the tail gate lock device according to the invention will be described with reference to the drawings.

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

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. Each of the back doors 54 has
A locking device 10 and a push-button type locking device 60 are installed to maintain the closed condition.

The locking device 10 of the tail gate 11 is
A pair of long arms and short arms are bent into a substantially L-shape, and are rotatably supported within the tail gate 11 in a substantially X-shape, with the bent portions overlapping each other. A swinging lever 12, 13, an operating handle 14 that pushes the short arm of the swinging lever 12, 13, one end of which is connected to the operating handle 14, the other end of which is connected to the tailgate 1.
Handle/return/stopped on one side respectively
A spring 15 and a spring 15 that can protrude from both sides of the tail gate 11 and the tail gate 11
a pair of latches 17, 18 located on both sides of the latches 17, 18 and connected via connecting rods 19, 20 to the long arms of the swing levers 12, 13, and when the tail gate 11 is closed; A pair of strikers 21 and 22 are disposed on the body 51 facing the latches 17 and 18 so as to be able to receive the latches 17 and 18;
8 protrudes from the side of the tail gate 11, and includes latch return springs 23, 23 disposed between the latches 17, 18 and the tail gate 11 side. ing.

The components of the locking device 10 except the strikers 21, 22, namely the swinging lever 12,
13, Operation handle 14, Handle return
Spring 15, latches 17, 18 and latch return springs 23, 23 are
It is arranged between the outer panel 57 and the inner panel 58 of the gate 11.

The swinging levers 12 and 13 are each formed into a substantially L shape with a long arm and a short arm, and each bent portion has a pin bore 2.
5 and 26 are formed, holes 27 and 28 are formed at the tips of the long arms, respectively, and the tips of the short arms are formed in an arc shape.

Swing levers 12, 13 formed in this way
has pin 29 in each pin bore 25, 26.
are rotatably combined through the That is, the swing levers 12 and 13 are approximately X-shaped, and their bent portions are overlapped so that their pin bores 25 and 26 are aligned, and their pin bores 25 and 26 are aligned with their pin 29. The pin 29 fits into the pin 29 and is rotatably supported.

The operating handle 14 is connected to the cross plate 3
A pair of substantially U-shaped legs 31, 32 are integrally formed at both ends of the cross plate 30 in a direction perpendicular to the cross plate 30.
A pair of pressing plates 33 and 34 are integrally formed at an appropriate interval on the inside of the cross plate 30, and on the base side of the legs 31 and 32, is pin bore 35,3
6, and furthermore, the legs 31,
The lower ends of 32 are each bent outward, and holes 37 and 38 are formed in these portions.

Moreover, the operating handle 14 formed in this way
A grip 39 is attached to the lower ends of the legs 31, 32 so as to extend over the lower ends of the legs 31, 32.

That is, the grip 39 is formed by integrally protruding pillars 41 and 42 at an appropriate interval from the back surface of a grip plate 40, and the respective pillars 41 and 42
A screw hole (not shown) is formed at the tip of the operating handle 14, and the legs 31, 3 of the operating handle 14
2 Pass the screws 81, 81 through the holes 37, 38 at the lower end,
It is attached by screwing into the pillars 41 and 42 of the handle 39, 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 43.
can be attached to the back of the

The bracket 43 is bent so that its substantially central portion protrudes toward the front, that is, toward the outer panel 57, thereby forming a swing lever mounting surface 45. The support arms 46, 47 are bent in this manner, and the main body 4 is
At the lower ends of both sides of 4, there are hook-shaped mounting legs 48, 4.
9 is integrally formed to protrude.

Screw holes 70, 71 and 72, 73 are formed on both sides of the bracket 43 and in the hook-shaped mounting legs 48, 49, respectively, and a pin bore 74 is formed approximately in the center of the swing lever mounting surface 45.
However, pin bores 75 and 76 are further formed at the distal ends of the support arms 46 and 47, respectively.

Furthermore, a hook 77 is formed on the side surface of the hook-shaped mounting leg 48 of the bracket 43 by partially cutting and raising the leg inward.

In order to attach the swing levers 12, 13 and the operating handle 14 to the bracket 43 formed in this way, first, the swing levers 12, 1
The pin 29 is inserted so that the pin bores 25 and 26 of No. 3 are aligned, and the tip of the pin 29 is passed through the pin bore 74 formed in the swing lever mounting surface 45 of the bracket 43 and caulked on the back side.

Next, the support arm 46 of the bracket 43,
47, with the operating handle 14 located between the pin bores 75, 76 of the support arms 46, 47.
and pin bores 35, 36 of its operating handle 14.
A pin 78 is inserted from one side so as to align with the E-ring 82, and an E-ring 82 is fitted into a groove 79 cut out at the tip of the pin 78 on the outside of the other support arm 47.

When inserting the pin 78, a coiled handle return spring 15 is inserted in advance inside one leg 31 of the operating handle 14, and the return spring 1
5 is hooked to the base side of the leg 31 of the operating handle 14, and the other is hooked to the hook 77 formed on the hook-shaped mounting leg 48 of the bracket 43.

Of course, the operating handle 14 attached in this manner is arranged so that the lower surfaces of the pressing plates 33, 34 are in contact with the upper ends of the swing levers 12, 13, that is, the tips of the short arms. , when the operating handle 14 is pulled toward you, the lower surfaces of the pressing plates 33, 34 come into contact with the tips of the short arms, which are the upper ends of the swing levers 12, 13, and push them down, causing them to A rotational movement is provided so that the lower ends of the swing levers 12 and 13, that is, the tips of the long arms, are brought close to each other. Further, when the operating handle 14 is released thereafter, the handle return spring 15 returns it to its original state.

The latches 17, 18 are slidably disposed within a flanged latch holder 83 and have a wedge-shaped tip 8.
5 on the outside of the flange 86 of the latch holder 83, and a locking bar 84 whose rear end, in which a connecting rod attachment hole 87 is formed, projects outward from the rear of the latch holder 83, The latch holder 83 is provided with a latch stop 88 on its flange 86 side.

That is, the latch stopper 88 is integrally bent from the outside to the inside so as to cover the distal end of the locking bar 84 at an appropriate interval.

In the latch holder 83 of the latches 17, 18 constructed in this way, the locking
The latch return spring 23 is attached so that the tip 85 of the bar 84 projects outward.

That is, the latch return spring 23 is passed through the locking bar 84, and is attached with one end located on the tip side of the locking bar 84 and the other end located on the bottom wall of the latch holder 83. ing.

Locking bar 84 of the latch 17, 18
The strikers 21, 22 that receive the latches 17, 18 are formed into a substantially box shape with one side open to receive the latch stoppers 88 of the latches 17, 18, and flanges 89, 90 are formed on the top and bottom of the strikers 21, 22. A hole 91 is provided on the side surface so that the tip of the locking bar 84 can be fitted into the hole 91.

The connecting rods 19 and 20 have a rod 92 with one end threaded and the other end bent into a substantially U-shape, a threaded hole 95 formed in a substantially L-shaped plate 94, and a hook 96 integrated into one end of the rod 92. It is fitted so as to wrap around the adjustment mechanism 93 and the hook 96, and the holes 2 of the swing levers 12 and 13 are fitted at one end.
The clip 97 is made of synthetic resin and has a protrusion 98 that is fitted into the clips 7 and 28.

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

First, place the bracket 43 to which the operating handle 14 and the swing levers 12, 13 are attached as described above to the upper center on the back surface of the inner panel 58, and then screw the screws 80, 80 and tighten into the screw holes 70 and 71 of the bracket 43.

Further, the hook-shaped mounting legs 48 and 49 of the bracket 43 are attached to the inner panel 5 in advance.
It is overlapped with a welded bracket (not shown) protruding from the back surface of 8 and fixed with screws.

Of course, the screw fixing work is done on the outer
This is done using holes (not shown) formed in the panel 57.

Next, the flange 86 is positioned on the side surface of the tail gate 11 so that the latches 17 and 18 are positioned above both sides of the tail gate 11, and the latch stopper 88 is positioned on the outside of the flange 86. and tighten with screws.

Furthermore, holes 2 formed at the lower ends of the swing levers 12, 13 attached to the bracket 43
7, 28, the clips 97, 97 are attached to the protrusions 9.
8 and 98, respectively, and then the adjustment mechanism 9 of the connecting rods 19 and 20 is inserted.
3 and 93 to an appropriate distance, and in this state, the hooks 96 and 96 are fitted into the projections 98 and 98 of the clips 97 and 97 described above. Of course, the other ends of the connecting rods 19, 20 are hooked in advance into holes 87, 87 formed in the rear ends of the locking bars 84, 84 of the latches 17, 18.

Further, the operating handle 14 can be operated from the outside at a position near the upper center of the outer panel 57 attached to the outer side of the inner panel 58, that is, at a position corresponding to the legs 31 and 32 of the operating handle 14. A hole (not shown) is formed as shown in FIG.
Screws 8 are inserted into the holes 37 and 38 at the tips of the legs 31 and 32 that protrude from the holes to the outside of the outer panel 57.
1, 81, the posts 41, 42 of the grip 39
screwed into the tip of each.

The work of screwing the handle 39 is done in advance using a service hole (not shown) formed in the inner panel 58 near the position where the bracket 43 is attached.

Locking device 10 thus installed
is caused by the gripping hand 39 being pulled toward you,
The operating handle 14 is rotated around the pin 78, and at this time, the pressing plates 33, 3 of the operating handle 14 are rotated.
4 pushes down the upper ends of the swing levers 12 and 13, respectively.

When the upper ends of the swinging levers 12, 13 are pushed down, the swinging levers 12, 13 rotate in opposite directions about the pin 29, and the lower ends of the swinging levers 12, 13 mutually rotate. Exercise in close proximity.

When the swing levers 12 and 13 are thus rotated, the connecting rods 19 and 20 connected to the lower ends of the swing levers 12 and 13 are pulled, respectively, and the latches attached to both ends of the tail gate 11 are pulled. 17 and 18 are released, and the tail gate 11 is opened via the hinges 52 and 53.

Of course, if you let go of the handle 39, the handle return spring 15 and latch 1
7, 18 latch return spring 23,
23, and if the tail gate 11 is pressed to close in this state,
Locking bar 8 in its latches 17, 18
The wedge-shaped tips 85, 85 of 4, 84 gradually retract the locking bars 84, 84 inward while contacting the sides of the strikers 21, 22 attached to the body 51 side, and the strikers 21, 22 are gradually retracted inward. When the locking position reaches the position where it is completely inserted into the holes 91, 91 of 21, 22, the locking is released by the action of the latch return springs 23, 23.
The bars 84, 84 protrude again, and the striker 2
It is stored in the holes 91, 91 of 1 and 22,
Gate 11 is locked.

At this time, the stoppers 88, 88 attached to the outside of the latches 17, 18 are housed in the strikers 21, 22, and with the tail gate 11 locked, the inner surfaces thereof are attached to the strikers 21, 22. 22 to prevent the tail gate 11 from being pushed in more than necessary.

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, It is rotatably supported by overlapping the parts, and the operation handle is
The short arm of the swing lever is pressed, a handle return spring is secured at one end to the operating handle and the other end to the tailgate, and a pair of latches are attached to each side of the tailgate. A pair of strikers, projectably disposed on either side of the tailgate and connected via a connecting rod to the long arms of the swinging lever, engage the latch in the closed position of the tailgate. between the latch and the tail gate side such that the latch is receivable and located on the body facing the latch, and the latch return spring projects the latch to the side of the tail gate. , the structure that rotatably supports the pair of swing levers is simplified, and the structure that rotatably connects the parts is also simplified, and the parts that rotatably connect are simplified. Since the number of parts is reduced, assembly is simple and easy, it is compact, and troubles when operating the handle to open the tail gate are prevented. When the tailgate is closed, its operating handle is returned by its handle return spring, the short arm of its swing lever is not pushed by its operating handle, and its latch is returned by its latch return spring. Pushed into the striker, the tailgate is securely locked to the body on both sides, and when opening the tailgate, the pull-up operation of the operating handle locks the tailgate on both sides. The locking condition is released at the same time, facilitating the operation of opening and closing the tailgate, and furthermore, the long arm of the swinging lever, which connects the connecting rod for the latch, makes it easier to release the latch. The necessary sufficient stroke is ensured, and the operating stroke of the operating handle is reduced by the short arm of the swing lever, so that the swing range of the swing lever is reduced within a certain range. space in the tailgate can be used effectively, especially with the long arm of the swing lever extending below the point where it rotatably supports. To operate the latch, 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 to operate the device. security and locking functions have been improved.
Furthermore, it is easier to install the connecting rod and the swing lever, and the service hole formed in the inner panel of the tail gate can be made smaller, improving the overall appearance of the tail gate. and become practical.

[Brief explanation of drawings]

Figure 1 is a rear view of a wagon to which the tail gate locking device of this invention is applied, and Figure 2 is a rear view of a wagon to which the tail gate locking device of this invention is applied.
Figure 3 is a partially enlarged front view showing a part of the inside of the outer panel of the tail gate, Figure 3 is a side view showing the swing lever and operation handle attached to the bracket, Figure 4 is a tail gate according to this invention.・Partially exploded perspective view of gate lock device, No. 5
The figure is a perspective view showing the assembled condition of FIG. 4, and FIG. 6 is a perspective view showing the attached condition of the latch and striker. 10...Tail gate lock device, 11...
...Tail gate, 12,13...Swing lever,
14...Operating handle, 15...Handle return spring, 17, 18...Latch, 1
9, 20... Connecting rod, 21, 22... Striker, 23, 23... Latch return spring, 51... Body.

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 latches projectable from both sides of the tail gate, located on both sides of the tail gate, and connected to the long arm of the swing lever via a connecting rod; a pair of strikers disposed on the body facing the latch and receptive to the latch when the latch is closed; A vehicle tail gate locking device including a latch return spring disposed between the gate side and the latch return spring.