JPH0438384A - Locking device - Google Patents

Abstract

PURPOSE:To easily lock and unlock an opening member, by energizing a fitting piece locking the opening member by insertion in a fitting hole of the opening to the opening direction of the side plate by use of an energizing means and protruding the fitting piece in the opening. CONSTITUTION:When the front edge of a manually pushing guide plate 3 is inserted into the opening 1a by turning the manual guide plate to the arrow C direction to contain it, the front edge 3a of the guide plate 3 contacts the taper 52a of the fitting piece 52 of a stopper 5 and slides to be contained. And the fitting piece 52 is moved back upward against a spring 7 by the pressing edge 3a. When the guide plate 3 is completely contained and the fitting hole 4 is positioned under the fitting piece 52, the stopper is inserted in the fitting hole 4 to lock the guide plate 3.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a locking device for an opening/closing member such as a door, and in particular a locking hole formed at an appropriate position on a side surface of the opening/closing member when an opening is closed. The present invention relates to a locking device that locks the opening/closing member by inserting a locking piece into the opening/closing member.

[Conventional technology]

In recent years, doors that open and close openings are locked so that the side of the door is flush with the side of the main body when closed.
The design is designed to blend in with the main body. For this reason, door locking devices are designed such that the handle portion for opening and closing the door does not protrude from the side surface of the door.

FIG. 5 is a side sectional view of a main part of a door that opens and closes in the vertical direction, which is conventionally used in image forming apparatuses and the like.

In the figure, a shaft 8a provided on the lower side of the door 8 is rotatably attached to the side plate 10 of the device, and the door 8 is rotated in the vertical direction (
It is designed to be opened and closed in the H direction. Said 1iF
A handle member 9 for opening and closing the door 8 is rotatably attached to the upper part of the K8 by a shaft 9b.

Further, a hook 9a for locking the door 8 is formed at the upper end of the handle member 9, and the hook 9a is formed at the upper end of the handle member 9. When n8 is closed, the hook 9a engages with a locking portion 10a formed at the top of the opening of the side plate 10.

When the lower end of the handle member 9 is rotated in the G direction and pulled upward while the door 8 is closed, the hook 9a is disengaged from the locking portion 10a and the door 8 can be opened. Also, after closing the door 8 with the lower end side of the handle member 9 rotated in the G direction and pulled upward, the handle member 9
When you release the handle member 9, the handle member 9 will be pulled up by its own weight or by a spring member.
The hook 9a moves in the opposite direction to the locking portion 10.
a, the door 8 is locked.

[Problem to be solved by the invention]

By the way, in the conventional door 8 locking device described above, when unlocking the door 8, the handle member 9 must be rotated in the G direction and pulled upward, and then the door 8 must be opened downward. The operating direction for unlocking is opposite to the operating direction for opening the door 8, which has the drawback of making the operation difficult.

Further, since a mechanism for rotatably holding the handle member 9 is provided inside the door 8, the thickness of the door 8 is increased.

In addition, in FIG. 5, the lower part of the handle member 9 projects forward from the side surface of the door 8.

The present invention has been made in view of the above, and the locking piece is automatically inserted into the locking hole provided in the door by the closing operation of the door and locked, and the locking piece is easily locked by pressing the release button. The purpose is to provide a locking device that can be unlocked.

[Means to solve the problem]

In order to solve the above problems, the present invention provides a locking device that locks the opening/closing member by inserting a locking piece into a locking hole formed at an appropriate position on the peripheral surface of an opening/closing member that opens and closes an opening. hand,
a locking piece that is disposed so as to be able to protrude into the opening from a side surface constituting the opening and has a taper at a tip of the side surface facing outside of the opening; and a locking piece that is biased toward the opening side. (1) an operating member movable in a direction perpendicular to the moving direction of the locking piece; and a direction changing means for changing the direction of the moving force of the operating member to the moving force of the locking piece. When the operating member is pressed, the locking single edge moves in a direction opposite to the biasing direction.

[Effect]

In the locking device configured as described above, locking holes are formed at appropriate positions on the circumferential surface of the opening/closing member.

Furthermore, a locking piece that is inserted into the locking hole and locks the opening/closing member is biased toward the opening by a biasing means and protrudes from the opening at a suitable position on the inner surface of the side plate that constitutes the opening. has been done.

When the opening/closing member is moved in the direction of closing the opening, the opening/closing member comes into contact with the tapered portion of the locking piece and moves while sliding against the tapered portion. The locking piece moves in a direction opposite to the biasing direction as the opening/closing member moves, and when the locking hole of the opening/closing member passes, it is inserted into the locking hole and automatically closes the opening/closing member. lock.

On the other hand, when the operating member is pressed toward the side plate while the opening/closing member is locked, the moving force of the operating member is transferred to the locking piece by the direction changing member in a direction opposite to the biasing direction. , the locking piece moves from the opening toward the side plate.

As a result, the locking piece retreats from the locking hole, and the opening/closing member is unlocked. Further, when the pressing force on the operating member is released after the opening/closing member is opened, the locking piece is moved to protrude from the opening by the biasing means, and the moving force is applied to the operating member by the direction changing member. The direction is changed and transmitted in a direction opposite to the pressing direction, and the operating member returns.

〔Example〕

FIG. 4 is a perspective view of a manual guide plate of a copying machine equipped with a locking device according to the present invention. In the figure, 1 is a side plate of the main body of the copying machine, 2 is an operation button for unlocking the manual feed guide plate, 3 is a guide plate for manually feeding the transfer paper, and 4 is the manual feed guide plate 3. This is a locking hole for locking.

The manual guide plate 3 is attached to the opening 1a so as to be rotatable in the vertical direction (R direction in the figure) by a rotation shaft (not shown), and can be stored in the opening 1a when not in use.

Next, the locking device according to the present invention will be explained using FIGS. 1 and 2. FIG. 1 is a rear view of the locking device according to the present invention, and FIG. 2 is a sectional view taken along line nn in FIG.

The operating button 2 is provided at a suitable position above the opening 1a in which the manual guide plate 3 is housed, and a locking device is provided on the back surface of the operating button 2. That is, a hole 1b having substantially the same shape as the surface shape (square in the drawing) of the operation button 2 is formed in the side plate 1, and the hole 1b is formed in the back side of the side plate 1.
Guide members 11 and 11' of the operation button 2 are formed along the upper and lower peripheral portions of b. Further, the shaft 5 of the stopper 5 is provided at the center of the guide member 11.11'.
Approximately C-shaped support pieces 12 and 12' are provided, respectively, to extend through the support member 1 and support the support member 1 so as to be movable in the vertical direction (direction C in FIG. 3).

On the other hand, the operation button 2 fitted into the hole 1b has a side portion 2 of an appropriate length for operating the guide member 11.11'.
2, and 423.23' is formed at the center of the upper and lower surfaces of the side surface 22 in the figure, which allows the operation button 2 to move in the horizontal direction (second eB direction). It is done like this. Furthermore, flanges 22a and 22a' are formed at the tips of the left and right sides of the side part 22, and the flanges 22a and 22a' contact the side plate 1 when the operation button 2 inserted into the hole 1b returns. In contact with the side plate 1
It is designed so that it does not come off. Further, at approximately the center of the back surface of the operation button 2, a pair of push-up members 21 and 21' that engage with a pin 6 horizontally protruding from an appropriate position of the shaft 51 are provided with an appropriate push-up member 21 and 21' that can be loosely fitted into the shaft 51. They are formed with intervals.

This push-up member 21, 21' has an engaging portion 24 consisting of an inclined portion 24a that slopes downward at a predetermined angle from the back surface of the operation button 2, and a horizontal portion 24b that continues to the tip of the inclined portion 24a. It is adapted to engage with the pin 6. The pin 6 may be fixed to the shaft 51, or may be rotatably fitted into a hole formed in the shaft 5. In this way, the frictional force between the pin 6 and the engaging portion 24 is reduced, and the moving force of the operating button 2 and the moving force of the stopper 5 are transmitted while smoothly changing direction.

Also, both ends of the pin 6 are bent into an L-shape, or the length of the pin 6 is adjusted from the circumferential surface of the shaft 51 to the side surfaces 22 and 22'.
By making the distance longer than the distance to the inner wall of the pin 6, the pin 6 will not fall off the shaft 51 even if it moves in the horizontal direction. Further, by forming an upright portion at the tip of the engaging portion 24, it is possible to prevent the stopper 5 from coming off the operating button 2.

Further, a rectangular parallelepiped-shaped locking piece 52 that is slightly smaller than the locking hole 4 formed in the manual guide plate 3 is provided at the lower end of the stopper 5 . This locking piece 52 is attached to the shaft 5 by inserting the operation button 2 into the hole 1b.
1 rises, the locking piece 52 is completely retracted upward from the opening 1a, and is set to a vertical dimension, and the tip of the side surface of the locking piece 52 facing the outside of the opening 1a is tapered. 52a is formed. Further, a flange 53 is formed at the connection portion between the shaft 51 and the locking piece 52.

This flange 53 restricts the downward movement force of the shaft 51 through the hole 1c, and also allows the flange 53 and the guide member 11'
A spring 7 is interposed between the stopper 5 and the stopper 5 so that the stopper 5 is urged downwardly and the locking piece 52 is projected into the opening la.

Note that the spring 7 and flange 53 may be omitted if the weight of the stopper 5 is increased so that it can be lowered by its own weight.

Next, the storage operation of the manual guide plate 3 will be explained using FIG.

When storing, the manual guide plate 3 is rotated upward (direction C in FIG. 3) and its tip is inserted into the opening 1a. The edge portion 3a contacts the taper 52a of the locking piece 52, and the taper 52a
It is stored while being rubbed. On the other hand, the locking piece 52 is
When the manual guide plate 3 is pushed by the tip edge 3a and retracted upward, and the manual guide plate 3 is completely retracted and the locking hole 4 is located below the locking piece 52, this to automatically lock the manual feed guide plate 3 (the state shown by the solid line in FIG. 3).

When setting the manual guide plate 3, the operation button 2 is recessed into the side plate 1 (moved in the third drawing direction). As a result, the engaging part 24 moves in the D direction, the pin 6 is pushed up while sliding on the inclined part 24a, the stopper 5 is raised entirely as shown by the imaginary line, and the locking piece 52 is moved against the manual guide plate. 3, and the lock is released. When the lock is released, the manual guide plate 3 is rotated outward from the opening 1a (in the direction of E in FIG. 3) by its own weight and set. Further, when the operation button 2 is released from the retracted state at the same time as the lock is released, the stopper 5 is urged downward by the spring 7, and the pin 6 is pressed against the inclined portion 24a.

This pressing force generates a force component in the F direction at the inclined portion 24a, and moves the operation button 2 in the F direction. And operation button 2
As the pin 6 moves, the pin 6 descends while sliding on the inclined portion 24a, and when it reaches the horizontal portion 24b, the operation button 2 stops moving and returns to its original position. Further, as the stopper 5 descends, the locking piece 52 penetrates the locking hole 1b of the side plate 1 and projects into the opening 1a. Note that in the above embodiment, the engaging portion 24 having the inclined portion 24a and the stopper 5
The pin 6 provided on the shaft 51 was intended to change the direction of the movement force of the operation button 2 and the movement force of the stopper 5.
For example, a gear may be provided on the shaft 51 and a pinion may be provided on the operation button 2 to change the direction. Alternatively, one end of a string may be fixed to a suitable position on the shaft 51 of the stopper 5, and the other end of the string may be fixed to a suitable position on the back surface of the operating button 2 via a pulley to effect the direction change.

Further, in the above embodiment, the locking device was provided so that the stopper 5 could move in the vertical direction, but the mounting direction of the locking device according to the present invention is not limited to this. For example, the stopper 5 can be moved in the horizontal direction. It may be provided so that it moves. Further, the locking device according to the present invention can be applied to an opening/closing member that is opened and closed not only in the vertical direction but also in the horizontal direction and other arbitrary directions.

〔Effect of the invention〕

As explained above, according to the present invention, the opening/closing member is simply provided with a locking hole that engages with the locking piece, so the structure of the opening/closing member can be simplified and the thickness can be reduced. Furthermore, there is no protrusion on the side surface of the opening/closing member, resulting in a good design.

Further, when the opening/closing member is stored in the opening, the locking piece is automatically inserted into the locking hole of the opening member and locked, so that the storing operation of the opening/closing member can be easily performed.

In addition, when the operating member is pressed, the moving force of the operating member in the press-fitting direction is transferred in the direction opposite to the biasing direction of the locking piece, so that it can be engaged simply by pressing the operating member. The locking piece escapes from the locking hole of the opening/closing member, and the locked state can be easily released.

Further, since the opening/closing member can be locked or unlocked simply by pressing the opening/closing member or the operating member, it can be widely applied to locking devices for rotary opening/closing members regardless of the opening/closing direction.

[Brief explanation of drawings]

FIG. 1 is a rear view showing an embodiment of the lock device according to the present invention, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG. 3 is a diagram for explaining the operation of the lock device according to the present invention. Main part side sectional view,
FIG. 4 is a perspective view of a manual guide plate of a copying machine to which a locking device according to the present invention is applied, and FIG. 5 is a side sectional view of a main part of a conventional locking device. DESCRIPTION OF SYMBOLS 1... Side plate, 1a... Opening, lb, lc... Hole, 2... Operation button, 3... Manual guide plate, 4...
Locking hole, 5...stopper 6...pin, 7...spring, 11.11' ・Guide member, 12.12
'...Support piece, 21.21'...Push-up member, 22
．． 22'...Side part, 23.23'...Groove, 24
... Engaging portion, 24a... Inclined portion, 24b... Horizontal portion, 51... Shaft, 52... Locking piece, 52a... Taper, 53... Flange. Patent applicant Agent: Sanda Kogyo Co., Ltd.
Patent Attorney Etsushi Kotani Patent Attorney Long 1) Masashi Patent Attorney Takao Ito

Claims (1)

[Claims] 1. A locking device that locks the opening/closing member by inserting a locking piece into a locking hole formed at a proper position on the peripheral surface of an opening/closing member that opens and closes the opening, the locking device locking the opening/closing member from the side surface constituting the opening. a locking piece disposed so as to be able to protrude into the opening and having a tapered tip at a side surface facing outside of the opening; a biasing means for urging the locking piece toward the opening; and a locking piece. an operating member movable in a direction perpendicular to the moving direction of the locking piece; and a direction changing means for changing the direction of the moving force of the operating member to the moving force of the locking piece, when the operating member is pressed, the A locking device characterized in that a locking piece moves in a direction opposite to an urging direction.