JPH0349561Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a fixing device for a vehicle bed that is foldably provided at the rear of the driver's seat of a truck, for example.

[Conventional technology]

Medium- and large-sized freight vehicles are often used for long-distance operations, so their cabs are equipped with sleepers where the driver, assistant, etc. can take a nap.

This bed device can be folded and stored in a relatively narrow driver's cabin so that it does not become a hindrance when not in use, and when in use, it rotates horizontally and locks onto the cabin wall on both sides of the hinge part with locking members. configured for use.
(For example, see Japanese Patent Publication No. 47-35575.) [Problems to be solved by the invention] The locking members for locking the bed in the use state of the bed device constructed in this way are arranged on both longitudinal end faces of the bed. Therefore, this operation, especially the unlocking operation of the bed, must be performed by two people, or both locking members must be connected with a wire or a connecting rod so that they work together, which saves space, cost, etc. There was a problem.

In view of this, an object of the present invention is to provide a bed fixing device that allows one person to perform locking and unlocking operations using locking members on both sides of the bed without using any connecting members.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention has a fixing device for a vehicle bed that is attached to the wall of the vehicle interior and rotates from the folded storage position to the use position. A bracket attached to a side wall, a locking member rotatably supported by the bracket and always biased in the direction of engagement with the bed, and a state in which the locking member is rotated in the direction of unlocking with respect to the bed. It is composed of a crank-shaped engagement shaft that engages with and holds an engagement portion formed on the locking member, and a lever that is fixed to this engagement shaft and is rotated.

[Effect]

With this structure, when the bed is rotated from the folded storage position to the use position, the bed is locked in the use position by the elastic rotation of both locking members on both sides, and is also locked in the use position. In this state, one of the locking members is rotated away from the bed to unlock one side, and at the same time, the crank-shaped engagement shaft is rotated to maintain this unlocked state, and in this state, the other locking member is By unlocking the locking member, both sides of the bed are unlocked and the bed can be rotated to the folded storage position.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, 1 is a driver's cabin, 2 is a bed provided behind the driver's seat 3, and the driver's cabin 1 is on the rear side.
It is rotatably attached to the rear wall surface 1a by a hinge member 4 from a hanging position to a horizontal position, and support shafts 5, 5 are fixed to the front sides of both left and right sides.

When this bed 2 is rotated to a horizontal position, that is, in use, the fixing device 1 is
0, it is locked and ready for use.

This fixing device 10 will be explained in detail below.

Reference numeral 11 denotes a base bracket having both side surfaces 11a and 11b facing each other;
A foot lever 12 is pivotally supported by a shaft pin 13 so as to be rotatable in the front and rear directions between the front ends thereof, and is constantly urged forward to rotate by a torsion spring 14.

The hook lever 12 has a hook portion 12a on the lower front edge side, an engagement recess 12b formed on the rear edge portion above the shaft support, and a knob 15 fitted into the upper end portion.

The shaft pin 13 is stepped and has a narrow diameter portion 13a.
is inserted into the shaft hole 12c of the foot lever 12, and the step surface 13 between the narrow diameter part 13a and the large diameter part 13b
c is brought into contact with one side of the foot lever 12. In this state, a tube 16 is fitted into the narrow diameter portion 13a, and a torsion spring 14 is wound around the tube 16. One end 14a of the spring 14 is attached to the lower rear edge side of the foot lever 12, and the other end 14b is attached to the base. The foot lever 1 is brought into contact with the inner surface of the bracket 11.
2 is always rotated forward.

A flange 13d is formed at the end of the large diameter portion 13b of the shaft pin 13 that pivotally supports the foot lever 12, and projects outward from one side 11a of the base bracket 11, and the end of the narrow diameter portion 13a is attached to the base bracket. By fitting the E-ring 17 protruding from the other side surface 11b of the tube member 11, one end surface of the tube member 16 is brought into contact with the other side surface of the foot lever 12, and the other side is brought into contact with the other side surface 11b of the base bracket 11, and in this state, the shaft The pin 13 does not slide axially relative to the base bracket 11, nor does it come out.

A crank-shaped engagement shaft 18 is rotatably supported at the rear of the base bracket 11, and this eccentric shaft portion 18a corresponds to the upper rear edge side of the foot lever 12, that is, the engagement recess 12b.
A lever 19 is fixed to one end of the base bracket 11 protruding from one side 11a of the base bracket 11, and an E ring 21 is fitted to the other end protruding from the other side 11b via a washer 20. 11 without sliding in the axial direction.

When the engagement shaft 18 is rotated by the lever 19, the eccentric shaft portion 18a contacts and presses the rear edge side of the foot lever 12, and the lower hook portion 12a of the foot lever 12 moves rearward, that is, from the support shaft 5 of the bed 1. It is rotated so as to move away from it, and in this rotated state, the eccentric shaft portion 18a engages with the engagement recess 12b, so that it is held in a state separated from the support shaft 5 of the bed 1, that is, in an unlocked state. .

The fixing device configured as described above is attached to the side of the vehicle wall so as to correspond to the side of the bed 1 when it is rotated to a horizontal position, that is, a use position.

Next, the supporting operation of the bed 1 by the fixing device configured as described above will be explained.

When the bed 1 is not in use, the bed 2 is suspended from the rear wall 1a of the driver's cab 1 by the hinge member 4. In this state, the foot lever 12 of the fixing device 10 is urged forward to rotate by the torsion spring 14.
Reference numeral 2 denotes an eccentric shaft portion 18a of the crank-shaped engagement shaft 18 whose rear edge is positioned upward when the lever 19 is raised.
It is held in the required rotational state by abutting against it.

Therefore, in order to set the bed 2 in the use position, the bed 2 is lifted and rotated using the hinge member 4 as a fulcrum against the rear wall surface 1a of the driver's cab, and when it is lifted to a nearly horizontal position, the support shafts 5, 5 are connected to the fixing devices 10 on both sides. ,1
0 hook lever 12, hook portion 12a of 12,
When the foot levers 12a come into contact with the inclined front edge of 12a and are further lifted and rotated, the foot levers 12, 12 are pushed and rotated by the support shafts 5, 5 so as to be kicked against the biasing force of the torsion springs 14, 14, and the support shafts 5, 5 get over the front edge side of the hook portions 12a, 12a, they rotate forward again, and the hook portions 12a, 12a
are engaged with the support shafts 5, 5, and the bed 2 is fixedly held in a horizontal state, ie, in use, by the foot levers 12, 12 via the support shafts 5, 5.

To fold the bed 1 from this state of use, first twist one foot lever 12 and release the spring 1.
4, the hook portion 12a is separated from the support shaft 5 with which it is engaged, and in this state, the crank-shaped engagement shaft 18 is rotated by the lever 19, and the eccentric shaft portion 18a is rotated. By positioning it on the front side and engaging the engagement recess 12b of the foot lever 12, the foot lever 12 is placed in a rotating state, that is, the hook 12
a is maintained apart from the support shaft 5. Therefore, one side of the bed 2 becomes unsupported.

Therefore, while supporting the bed 2 with one hand, the other hook lever 12 is rotated against the biasing force of the torsion spring 14 to separate the hook portion 12a from the other support shaft 5 and release the engagement. The bed 2, which is released from the hands, rotates downward by its own weight around the hinge members 4, 4, and faces the rear wall surface 1a of the driver's cab, and is in a folded storage state.

After folding the bed 2 in this manner, one of the hook levers 12, which is in the unlocked and held state due to the rotation of the crank-shaped engagement shaft 18, releases the engagement by rotating the crank-shaped engagement shaft 18 back to its original state using the lever 19. Then, the torsion spring 14 is again biased to rotate forward, that is, the state is such that it can be engaged with the support shaft 5 of the bed 2.

In this way, according to this example, in order to set the bed 2 from the folded state to the use state, the bed 2 in the folded storage state can be simply lifted and rotated to lock it in a predetermined position, and to set it in the use state from the use state. One foot lever 12 is unlocked from the support shaft 5 of the bed 2, the unlocked state is maintained by the crank-shaped engagement shaft 18, and the other foot lever 12 is unlocked from the other support shaft 5. This allows one person to set up the bed and fold and store it.

In this example, only one foot lever 12 of the fixing device for fixing the bed 2 is configured to be held in the unlocked state by the crank-shaped engagement shaft 18, and the other foot lever 12 is not provided with a holding member and is always attached to the bed. It may be configured to engage with the second support shaft 5. In this case, the bed 2 can be folded only from one side.

[Effect of idea]

As described above, according to the present invention, the lock levers that lock the foldable and rotatable bed in the use state are held in the unlocked state, so that when the bed is folded and stored, the locking portions on both sides of the bed hinges are locked. It is possible to unlock and hold one hook lever without operating them at the same time, and then release the other lock in this state, so it can be easily operated by one person, and there is no need for connecting members such as wires or connecting rods. Therefore, the structure is simple and the cost can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an example of the bed fixing device according to the present invention, Fig. 2 is a front view of the same, Fig. 3 is an exploded perspective view of the same, Figs.
The figure is a schematic vertical cross-sectional view of a truck driver's cab equipped with the device of the present invention, and FIG. 6 is a schematic cross-sectional view of the driver's cab shown in FIG. 5. In the figure, 2 is the bed, 11 is the base bracket, 1
2 is a foot lever, 14 is a torsion spring, 18
18a is a crank-shaped engagement shaft, 18a is an eccentric shaft portion, and 19 is a lever.

Claims (1)

[Scope of Claim for Utility Model Registration] In a vehicle bed that is attached to a wall of a vehicle interior and rotated from a folded storage position to a use position, a bracket that is attached to the side wall of the vehicle interior corresponding to the side of the bed in the use position; , a hook that is rotatably supported by the bracket and engages with the bed on the lower front edge side, an engagement recess formed in the rear edge above the pivot support, and always in the direction of engagement with the bed; a crank-shaped engagement shaft that engages and holds an engagement recess formed in the foot lever when the foot lever is rotated away from the bed; and the engagement shaft. and a lever that is fixedly fixed to and can be rotated, and the disengaged state of the foot lever with respect to the bed is maintained by the rotational engagement of the crank-shaped engagement shaft. Device.