JPH03241185A - Device for locking and opening door of power shovel cabin - Google Patents

Abstract

PURPOSE:To make a side outer frame free from any projecting section so as to improve the appearance of a power shovel cabin by allowing a hook to be provided on a door to get into an opening opened in the side outer frame and engage with the locking tool of a door lock when the door is opened. CONSTITUTION:A U-shaped hook 12 is firmly fitted to the intermediate section of the door 9 of a cabin 1 and, at the same time, an opening 14 is opened to a side outer frame 13 at a position below a side window 7 so that the hook 12 can get into the opening 12 when the door 9 is opened by using hinges 8. After getting into the opening 14, the door 9 is locked in the opened state by clamping the hook 14 with a door lock housed in a side inner frame. When the locking state is to be canceled, the hook is released by turning an inside lever. Therefore, this opened door locking device can be provided without spoiling the appearance of the cabin, because the door locking device does not protrude from the side outer frame 13.

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to the cabin of a power excavator, and in particular, the invention relates to a cabin of a power excavator, and in particular, to a cabin in which no protrusion is provided on the side outer frame of the cabin and aesthetic measures are taken. This invention relates to a door open lock device.

[Prior Art] Conventionally, the cabin of this type of power excavator has been operated with the door open when workers frequently get on and off the vehicle or when the temperature inside the cabin is extremely high in the summer. work is being done.

[Problem to be solved by the invention] As mentioned above, when locking the cabin door in an open state, it is conceivable to attach a locking device externally to the side outer frame of the cabin, but in such a state, the aesthetic appearance is Lose.

Therefore, a technical problem arises that must be solved in order to lock the door in the open state without spoiling the aesthetic appearance, and the present invention aims to solve this problem.

[Means for Solving the Problems] The present invention was proposed to achieve the above object, and the door lock is housed in a recess in a side inner frame of a cabin, and the door lock is opened in a side outer frame. The locking tool of the door lock is positioned in the opening, a hook provided on the opened door is inserted into the opening, and the hook is configured to be freely engaged and detached from the locking tool of the door lock. It is an object of the present invention to provide a door oven locking device for a cabin of a power excavator, which is characterized by the following features.

[Function] In this invention, a hook is provided on the outside of the door, and when the door is opened, the hook is inserted into the opening of the side outer frame of the cabin. A door lock latch is located in this opening, and the hook engages the latch to lock the door in the open position. When the door is to be closed, the hook is released from the locking device by operating a lever or the like to release the lock. Since the door lock is housed in a recess in the side inner frame of the cabin, there are no protrusions on the side outer frame of the cabin even when the door is closed, and the appearance is not impaired.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the accompanying drawings. Figures 1 and 2 show the cabin of a power excavator (
1), the cabin (1) is mounted on the top surface of the engine cover (2).

A pull-up window (3) and a front under-window (4) are attached to the front of the cabin (1), and a roof window (5) and lifting hooks (6) (6) are attached to the ceiling surface.
)(6)(6). A side window (7) is attached to the side of the cabin (1), and a door (9) with a hinge (8) as a pivot is attached so as to be openable and closable. A sight window (10) is attached to the upper part of this door (9), an under window (11) is attached to the lower part, and a U-shaped hook (■) is fixed to the middle part of the door (9).
Side outer frame (1 side window (7)
An opening is formed in the lower part of the door, and a hook (■) is inserted into the opening (+4) when the door (9) is opened, as shown in Figure 2. .

The door oven locking device of the present invention will be further explained with reference to FIGS. 3 and 4. Side inner fly 1'
A recess (+61) is provided in the lil, the door lock ((7) is stored in this recess (16), and the screw (IEI (IIIc)
(1 (Concluded in 1.

The door lock (r7) is provided with a locking member QΦ pivotally connected to the rotation shaft (+9) and a stopper @ pivotally connected to the pin (21). The locking tool [phase] is biased clockwise in FIG. The notch (2) of the pin comes into contact with the locking tool [phase]
It is locked to prevent it from rotating. A U-shaped locking groove (4) is drilled in the other side of the locking tool [phase], and the locking tool (4) is locked in the side outer frame (the opening (+4) of the seagull). It is arranged so that the groove (4) is located.

On the other hand, the stopper (to) is biased toward the right in FIG. are in contact with each other. In addition, as shown in Figure 4, a reverse-shaped lever (to) is pivotally attached to the door lock (0), and a handle (1) is provided at the tip of the lever so that it can be operated near the front pillar (3+). At the same time, when the lever (to) is rotated forward, the side part of the lever (to) presses the tip of the stopper @ to the left in Fig. 3. The shape of the side inner frame (1) should not be limited to this, and may be a linear lever. )0).

Here, if the door (9) is opened and the hook θ→ is inserted into the side outer frame (the opening (■) of the seagull), the hook (■ is the locking groove (4) as shown by the chain line in FIG. ) and press the locking tool [phase]. Then, the rotating wheel (1'
3), the locking tool Q@ rotates counterclockwise, and as shown in FIG. 5, the locking tool Q@ contacts the stopper wall and stops rotating. At that time, Spring G! The stopper @ pulled by the force turns to the right in the figure, and the protrusion of the stopper @ (
4) engages with the notch (2) of the locking tool (to).

Therefore, the locking tool (4) is biased by the spring (4).
) clockwise rotation is locked by the engagement of the protrusion (4), and the hook 0 of the door (9) is locked by the locking tool (4), thereby locking the door lock (). is in a locked state.

Thus, as shown in FIG. 2, the door (9) of the cabin (1) is locked in the open state and will not be unlocked when the power shovel turns. To release the above lock, press the lever (to) as shown in Figure 5.
Turn to the left in the figure and press the tip of the stopper @. At this time, the protruding piece (4) of the stopper (2) separates from the notch (2) of the locking tool [phase], and the locking tool [phase] is biased by the spring (to) to the rotation shaft ( 0) in the clockwise direction in the figure. Therefore, the locking groove (4) and the door (
9) is disengaged from the hook (I2), and the lock is released again in the state shown in FIG. 3.

Note that this invention can be modified in various ways without departing from the spirit of the invention, and it goes without saying that this invention extends to such modifications.

[Effects of the Invention] As described in detail in the above-described embodiment, the door lock is housed in the recess of the side inner frame of the cabin, so that the door lock device does not protrude into the side outer frame. Therefore, the door oven lock device can be installed without spoiling the aesthetic appearance, and since there are no unnecessary protrusions inside or outside the cabin, this invention has various effects such as contributing to improving work safety. .

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a slope view of the cabin of a power shovel, Fig. 2 is a plan view of the same,
FIG. 3 is a cross-sectional view of the main part of the door lock, FIG. 4 is an exploded perspective view of the door lock, and FIG. 5 is a cross-sectional view of the main part of the door lock. (1)・・・・・・Cabin (■・・・・・・
Hook (1 piece...Side outer frame (■
...Opening (1'9...Side inner frame (16)
・－・・・Concave part (r7)・・・Door lock Q ■・・・Locking device patent Applicant Iseki Agricultural Machinery Co., Ltd.

Claims (1)

[Claims] The door lock is stored in the recess of the side inner frame of the cabin, and the locking device of the door lock is positioned in the opening made in the side outer frame, and the hook provided on the opened door is inserted into the opening. A door open lock device for a cabin of a power shovel, characterized in that the hook is inserted into the door lock and the hook can be freely engaged and detached from the locking tool of the door lock.