JP7431547B2 - Slope device for eliminating steps - Google Patents

Description

The present invention relates to a slope device for eliminating differences in level between lower and upper surfaces in various passages.

Conventionally, in order to eliminate the level difference between the lower surface and the upper surface in a passage, a fixed body is installed on the lower surface, and a fixed body is rotatably connected to the fixed body, so that when it rotates upward, it faces toward the upper surface. A slope device has been proposed that includes a movable plate that forms a slope, and a connection mechanism that interconnects the movable plate and a fixed body.

Utility model registration No. 3154296 Japanese Patent Application Publication No. 2005-207145

In many conventional slope devices, the connection mechanism provided between the movable plate and the fixed body is configured by screw means.

In the case of Patent Document 1, the screw means is configured as a jack-up device using a bolt member, and is configured to move the movable plate up and down through axial movement of a nut member screwed into the bolt member. .

In the case of Patent Document 2, the screw means is constituted by a turnbuckle device, and is configured to move the movable plate up and down by rotating the female screw member and expanding and contracting the turnbuckle device.

However, such screw means have a structure in which the movable plate is moved up and down by manually rotating the bolt member or female thread member, and the work for such rotation must be done in the narrow space between the fixed body and the movable plate. The work is complicated because it has to be done within a certain space.

Moreover, in the case of screw means that require rotational work, it is not possible to quickly move the movable plate to the desired raised and lowered positions, which makes it difficult to install multiple slope devices in parallel at a step in a wide passage. , there is a problem that the work time is long.

The present invention provides a slope device for eliminating steps that can easily and quickly move a movable plate upward and downward, and that can suitably support the load that the movable plate receives when it is used in an upward movement. This is what we provide.

Therefore, the slope device of the present invention is configured as a means to eliminate the difference in level between the lower surface and the upper surface in the passage, and includes a fixed body installed on the lower surface and a rotatable member attached to the fixed body. It is composed of a movable plate that is pivotally connected to form a slope toward the upper surface when rotated upward, and a connecting mechanism that connects the movable plate and the fixed body to each other in a telescopic manner, and the connecting mechanism is movable. A first movable member consisting of an exterior member that is pivotally connected to the plate and the fixed body so that they mutually move in the expansion and contraction direction when the movable plate is rotated, and a rod member that is slidably inserted into the exterior member. It is composed of an expansion/contraction device including a second moving member, and a one-way control device provided between the first moving member and the second moving member, and the one-way control device controls the movement of the exterior member and the rod member in the direction of extension. A locking means is provided for detachably locking the exterior member and the rod member to allow mutual movement but disable mutual movement in the direction of contraction, and a lock release means for releasing the locking of the locking means. The locking means includes a concave and convex means provided around the outer circumferential surface of the rod member in a direction perpendicular to the axis and consisting of grooves and protrusions arranged alternately in the expansion and contraction direction, and a concave and convex means formed on the exterior member. The locking member is a plate member provided with a locking hole through which the rod member is movably inserted, and the plate member constituting the locking member is attached to an exterior member so as to be immovable in the direction of expansion and contraction. The rod member is swingable around a fixed piece fixed to the axis between an oblique position and an orthogonal position with respect to the axis of the rod member, and is normally biased by a spring. The locking member (28) is held in the orthogonal position and is brought into the orthogonal position when pushed against a spring by an operating means constituting a lock release means provided on the opposite side of the fixed piece. The locking hole (28a) is formed such that a diameter d1 in the direction connecting the fixing piece (28b) and the operating means (24a) and a diameter d2 in the direction perpendicular to this satisfy d1>d2, and the locking hole (28a) By extrapolating a plurality of stacked locking members made of the same material onto the rod member, a continuous surface with an L-shaped cross section is formed by the edges of the locking holes of the plurality of locking members in an oblique posture. The edge portion constitutes a tooth means that engages the uneven means .

In an embodiment of the present invention, the locking means is arranged such that a plurality of locking members each made of a plate member provided with the locking hole are stacked and inserted onto a rod member, so that adjacent locks are placed in an oblique position. Among the members, the inner peripheral surface of the locking hole of one locking member and the peripheral surface of the locking hole of the other locking member form a continuous surface with an L-shaped cross section, and the inner peripheral surface forms a continuous surface of the locking hole of the other locking member. In this case, the concave-convex means of the rod member includes a gently inclined surface that comes into surface contact with the inner circumferential surface of the locking hole that constitutes the tooth means, and a peripheral surface of the locking hole. It is preferable to have a steeply sloped surface that can freely come into contact with the surface.

According to the present invention, the slope for eliminating differences in level can easily and quickly move the movable plate upward and downward, and can suitably support the load that the movable plate receives when it is used in an upward movement. It becomes possible to provide the device.

It is a perspective view showing a slope device concerning one embodiment of the present invention. The side view of the slope device according to one embodiment of the present invention is shown, in which (A) is a side view showing the entire slope device when not in use, and (B) is a state in which the movable plate latches are removed when in use. FIG. 3 is a partially enlarged side view. The side view of the slope device in use is shown, in which (A) is a side view showing a state in which a low level difference is eliminated, and (B) is a side view showing a state in which a high level difference is eliminated. FIG. 3 is a perspective view showing the telescopic device and the one-way control device in an exploded state regarding the first embodiment of the coupling mechanism. Regarding the first embodiment of the connection mechanism, (A) is a sectional view of the one-way control device, (B) is a side view showing the telescopic device in a contracted state, and (C) is a side view showing the state when the telescoping device is extended. , (D) are sectional views showing the locked state of the locking means. Regarding the first embodiment of the connection mechanism, (A) is a side view showing the extension state of the telescoping device, (B) is a side view showing the state when the telescoping device is contracted, and (C) is the unlocked state of the locking means. FIG. A second embodiment of the coupling mechanism is shown, in which (A) is a cross-sectional view showing the locked state of the locking means, (B) is an enlarged cross-sectional view of the tooth means and the uneven means, and (C) is the unlocked state of the locking means. FIG.

Preferred embodiments of the present invention will be described in detail below based on the drawings.

(overall structure)
As shown in FIGS. 1 to 3, the slope device is used to eliminate the difference in level between a lower surface L and an upper surface H in a passage, and includes a fixed body 1 installed on the lower surface L and a fixed body 1 installed on the lower surface L. A movable plate 3 is rotatably connected to the fixed body 1 via a pivot 2 and forms a slope toward the upper surface H when rotated upward, and the movable plate 3 and the fixed body 1 are connected to each other. It is constituted by a connecting mechanism 4 that is telescopically connected.

In the case of the illustrated embodiment, the fixed body 1 is provided with a seat plate 1a having a guide slope serving as a slope introduction surface at the base end, and a pair of frames 1b, 1b extending from both sides of the seat plate 1a. A receiving metal fitting 5 is fixedly located at the tip (portion facing the upper surface H) of a bottom plate (not shown) provided between both frames.

The movable plate 3 has a bottom plate 6 extending from its tip, and is configured to place the bottom plate 6 on the upper surface H when moving upward to form a slope that eliminates the level difference. As shown in FIG. 2, when not in use, the movable plate 3 is lowered to the lowest position by moving downward; , the movable plate 3 and the fixed body 1 are lowered to a position substantially parallel to the fixed body 1, and at this position, the movable plate 3 and the fixed body 1 can be removably locked to each other by the latches 7. In this state, the slope device is shaped like a flat board, and storage and transportation is possible by compactly stacking multiple slope devices.

The latch 7 consists of a gate-shaped metal rod whose one end is rotatably and slidably inserted into a support fitting 8 fixed to the lower surface of the side of the movable plate 3, and the other end is fixed. By inserting the movable plate 3 into the locking hole 9 provided in the frame 1b of the body 1, the movable plate 3 is latched and locked to the fixed body 1. When using the slope device, when moving the movable plate 3 upward, as shown in FIG. It is held with the end inserted into the holding hole 10 of the support fitting 8.

Thereby, the movable plate 3 is made freely rotatable around the pivot shaft 2, and by moving upward, it assumes a desired inclined posture as shown in FIG. 3, forming a slope with no steps. At this time, handles 11 that can be pulled out and retracted are provided on both sides of the movable plate 3, so that the user can move the movable plate 3 upward by simply grasping and lifting the handles 11. It is configured.

The connecting mechanism 4 is a telescopic member consisting of a first movable member 12 and a second movable member 13 that are pivotally connected to the movable plate 3 and the fixed body 1, respectively, and thus move in the telescopic direction when the movable plate 3 is rotated. The one-way control device 15 is provided between the first moving member 12 and the second moving member 13.

As shown in FIG. 4, the first moving member 12 and the second moving member 13 are composed of an exterior member 12a and a rod member 13a that are slidably inserted into each other. In the illustrated embodiment, the base end of the first moving member 12 is rotatably attached to the support fitting 8 of the movable plate 3, and the base end of the second moving member 13 is rotatably attached to the support fitting 8 of the fixed body 1. It is pivoted so that it can rotate freely. However, it is also possible to reverse the arrangement, in which the first moving member 12 is pivotally connected to the receiving metal fitting 5 of the fixed body 1, and the second moving member 13 is pivotally connected to the supporting metal fitting 8 of the movable plate 3. Also good.

(First embodiment of telescopic device and one-way control device)
4 to 6 show a first embodiment of the telescoping device and one-way control device 15. FIG.

The exterior member 12a constituting the first moving member 12 of the telescopic device has guide slots 17 formed on both sides of a rectangular cylindrical portion 16 that is pivotally connected to the support fitting 8 via a pivot 15, and a wide shape at the tip. An insertion hole 19 is provided in the front wall of the dish part 18 for guiding and inserting the rod member 13b into the square tube part 16, and a fixing hole 20 is provided in the bottom wall of the dish part 18. are doing.

The rod member 13a constituting the second moving member 13 is composed of a rod that is pivotally attached to the receiving metal fitting 5 via the pivot shaft 21, and is slidably inserted into the rectangular tube portion 16 through the insertion hole 19. A guide pin 22 inserted through the tip end is slidably fitted into the guide slot 17.

As a result, the rod member 13a and the exterior member 12a are combined so as to be able to expand and contract with each other, and the movable plate 3 and the fixed body 1 are connected to each other by the expansion and contraction device having such a structure. Therefore, the telescoping device is extended when the movable plate 3 is moved upward, and contracted when it is moved downward.

The one-way control device 15 allows mutual movement of the first moving member 12 and second moving member 13 in the extension direction, but disables mutual movement of the first moving member 12 and second moving member 13 in the contraction direction. A locking means 23 for detachably locking the locking means 23 and a lock release means 24 for releasing the locking of the locking means 23 are provided.

Therefore, when the movable plate 3 is pulled up by gripping the handle 11 as described above, the locking means 23 does not work, so the first moving member 12 and the second moving member 13 are extended while the movable plate 3 is pulled up. movement is possible. Therefore, the movable plate 3 can be moved upward at once to the position where the desired inclination angle is obtained.

However, when an attempt is made to move the movable plate 3 downward from the upwardly moved position, the locking means 23 works and locks the first moving member 12 and the second moving member 13 in a non-contractable state, thereby moving the movable plate 3. Support it immovably. Therefore, when the slope device is used, that is, when the movable plate 3 is moved upward to form a slope for eliminating steps as shown in FIG. 3, the load that the movable plate 3 receives from passing workers and vehicles is , rigidly supported by a non-retractably locked telescoping device.

In the first embodiment, the locking means 23 of the one-way control device 15 includes a large number of uneven means 25 formed on the outer peripheral surface of the rod member 13a and consisting of grooves 26 and protrusions 27 arranged alternately in the direction of expansion and contraction. , a locking member 28 having a tooth means 29 that releasably engages with the uneven means 25; and a spring 30 that elastically biases the locking member 28 in a direction to cause the tooth means 29 to engage with the uneven means 25. The lock release means 24 is constituted by an operating means 24a consisting of a knob that moves the locking member 28 against the spring 30 in a direction in which the tooth means 29 is disengaged from the uneven means 25.
At this time, the grooves 26 and the protrusions 27 constituting the unevenness means 25 do not extend spirally, but extend perpendicularly to the axis of the rod member 13a with respect to the outer circumferential surface of the rod member 13a, as shown in the figure. It is provided in the circumferential direction.

In the case of the illustrated embodiment, the locking member 28 is constructed of a plate member that is installed inside the dish portion 18 of the exterior member 12a and has a locking hole 28a through which the rod member 13a is movably inserted . A plurality of locking members 28 made of the plate members are fitted onto the rod member 13a in a stacked state. Then, between the oblique posture P1 and the orthogonal posture P2 with respect to the axis of the rod member 13a, centering on the fixing piece 28b fixed to the fixing hole 20 of the dish portion 18 so as to be immovable in the direction of expansion and contraction. It is made to be able to swing freely so as to change the posture at , and normally maintains an oblique posture P1 facing the movable plate 3 while being biased by a spring 30. At this time, the edge of the locking hole 28a The formed tooth means 29 is configured to engage with the uneven means 25. Therefore, as shown in FIG. 5(D), by placing the plurality of stacked locking members 28 in the oblique posture P1, the edges of the locking holes 28a of the plurality of locking members 28 form a continuous L-shaped cross section. The tooth means 29 is locked to the unevenness means 25 in a state where the surface is formed.

The operating means 24a constituting the lock release means 24 is formed by a knob provided on the opposite side of the fixing part 20 of the locking member 28, and the operating means 24a is pushed with a user's fingertip. As a result, the tooth means 29 is configured to separate from the uneven means 25 when the lock member 28 is in the orthogonal position P2.

As shown in FIG. 5(A), the locking hole 28a of the locking member 28 has an elliptical shape or a diameter d1 in the direction connecting the fixed piece 28a and the operating means 24a, and a diameter d2 perpendicular to the diameter d1 such that d1>d2. It is formed in an elliptical shape, so that when the locking member 28 is swung around the fixed piece 28a to assume the orthogonal position P2, the tooth means 29 can be reliably separated from the uneven means 25. .

(effect)
FIG. 5(B) shows a state in which the movable plate 3 is lowered and the first moving member 12 and the second moving member 13 are contracted. When the movable plate 3 is lifted upward from this state, the first movable member 12 and the second movable member 13 mutually extend to move above the movable plate 3, as shown in FIG. 5(C). enable movement. To move the moving members 12 and 13 away from each other, the concavo-convex means 25 pushes the tooth means 29, and the lock member 28, which is in the oblique posture P1, is swung in small increments against the spring 30. This is carried out by retracting the means 29 from the unevenness means 25. Therefore, the movable plate 3 can be moved upward to a desired position all at once.

As shown in FIG. 5(D), when the upward movement of the movable plate 3 is stopped, the downward movement direction of the movable plate 3, that is, the direction in which the first moving member 12 and the second moving member 13 are contracted, is as follows. The tooth means 29 of the locking member 28 held in the oblique position P1 by the spring 30 engages with the concavo-convex means 25 of the rod member 13a, thereby acting as a lock and preventing contraction movement. Therefore, the movable plate 3 is supported in a state where it cannot move downward.

When moving the movable plate 3 downward from the upwardly moved position, by pushing the operating means 24a of the locking member 28 with a fingertip or the like, the locking member is placed in the oblique posture P1 shown in FIG. 6(A). 28 to the orthogonal posture P2 shown in FIG. 6(B). As a result, the tooth means 29 is separated from the uneven means 25 as shown in FIG. 6(C). It is possible to move the moving member 12 and the second moving member 13 relative to each other in the contraction direction. Therefore, the movable plate 3 can be moved down at once to a desired position while the locking member 28 is held in the orthogonal position P2.

(Second embodiment of one-way control device)
FIG. 7 shows a second embodiment of the one-way control device 15, in which a structure different from that of the first embodiment is adopted, particularly regarding the uneven means 25 and the tooth means 29 in the locking means 23. Therefore, since the other configurations are the same as those described above for the first embodiment, the description will be omitted by referring to the above description.

Similar to the configuration illustrated in the first embodiment, the locking member 28 is housed inside the dish portion 18 in a state in which a plurality of locking members 28 made of a plate member provided with a locking hole 28a are stacked, and a fixing piece 28b is locked and fixed in the fixing hole 20, and the rod member 13a is inserted through the locking hole 28a.

As shown in FIG. 7B, the locking member 28, which is set in the oblique posture P1 with the fixed piece 28b as a fulcrum by the spring 30, is inserted into the locking hole of one of the locking members between the adjacent locking members 28, 28. The inner circumferential surface 29a of the locking member 28a and the circumferential surface 29b of the locking hole 28a of the other locking member form a continuous surface with an L-shaped cross section, and the inner circumferential surface 29a constitutes the tooth means 29.

On the other hand, the unevenness means 25 of the rod member 13a has a gently inclined surface 25a that comes into surface contact with the inner peripheral surface 29a of the locking hole 28a constituting the tooth means 29, and a periphery of the locking hole 28a. It has a steeply inclined surface 25b that can freely come into contact with the surface 29b.

In the second embodiment, the movement of the first moving member 12 and the second moving member 13 in the extension direction, that is, the movement of the rod member 13a in the M1 direction shown in the figure, is such that the steeply inclined surface 25b of the unevenness means 25 moves along the peripheral surface 29b. This is done by pushing the locking member 28 into the oblique position P1 and swinging it little by little against the spring 30 while retracting the surrounding surface 29b from the steeply inclined surface 25b.

On the other hand, the movement of the first moving member 12 and the second moving member 13 in the contraction direction, that is, the movement of the rod member 13a in the illustrated M2 direction, is caused by the locking member 28 held in the oblique posture P1 by the spring 30. Since the tooth means 29 (inner circumferential surface 29a of the locking hole 28a) receives the gently inclined surface 25a of the uneven means 25 of the rod member 13a, this locks and prevents movement in the contraction direction.

Note that when moving the first moving member 12 and the second moving member 13 in the contraction direction, the locking member 28 is moved as shown in FIG. 7(C) by pushing the operating means 24a of the locking member 28 with a fingertip or the like. It is only necessary to move the spring 30 upright against the spring 30 to take the orthogonal posture P2, and as a result, the entire circumference of the locking hole 28a is separated from the uneven means 25, so that the first moving member 12 and the second moving member 13 are moved. It can be moved in the direction of contraction.

L Lower surface H Upper surface 1 Fixed body 1a Seat plate 1b Frame 2 Pivot 3 Movable plate 4 Connection mechanism 5 Receiving metal fitting 6 Bottom plate 7 Latching element 8 Supporting metal fitting 9 Locking hole 10 Holding hole 11 Handle 12 First moving member 12a Exterior Member 13 Second moving member 13a Rod member 14 One-way control device 15 Pivot 16 Rectangular tube portion 17 Guide slot 18 Disc portion 19 Insertion hole 20 Fixing hole 21 Pivot 22 Guide pin 23 Locking means 24 Lock release means 24a Operating means 25 Unevenness means 25a Gently inclined surface 25b Steeply inclined surface 26 Groove 27 Convex strip 28 Locking member 28a Locking hole 28b Fixing piece 29 Tooth means 29a Inner peripheral surface 29b Surrounding surface 30 Spring

Claims (2)

This is a slope device that eliminates the difference in level between the lower and upper surfaces of the passage.
a fixed body (1) installed on the lower surface; a movable plate (3) rotatably connected to the fixed body to form a slope toward the upper surface when rotated upward; Consists of a connecting mechanism (4) that telescopically connects the plate and fixed body to each other,
The connecting mechanism (4) includes a first movable member (12) comprising an exterior member (12a) that is pivotally connected to the movable plate and the fixed body so that the movable plate moves in the expansion/contraction direction when the movable plate is rotated. a telescopic device provided with a second moving member (13) consisting of a rod member (13a) slidably inserted into the exterior member (12a); and a telescopic device provided between the first moving member and the second moving member. Consists of a one-way control device (14),
The one-way control device (14) allows mutual movement of the exterior member (12a) and the rod member (13a) in the direction of extension, but disables mutual movement of the exterior member (12a) and the rod member (13a) in the direction of contraction. A locking means (23) is provided for releasably locking the locking means (23), and a locking means (24) for releasing the locking of the locking means (23) is provided .
The locking means (23) includes grooves (26) and protrusions (27) that are provided around the outer peripheral surface of the rod member (13a) in a direction perpendicular to the axis and alternately arranged in the expansion and contraction direction. and a locking member (28) comprising a plate member provided in the exterior member (12a) and having a locking hole (28a) through which the rod member (13a) is movably inserted. is,
The plate member constituting the lock member (28) is tilted with respect to the axis of the rod member (13a) with the fixed piece (28b) fixed to the exterior member so as not to be movable in the direction of expansion and contraction. It is swingable to change the posture between the orthogonal posture (P1) and the orthogonal posture (P2), and normally maintains the oblique posture (P1) in a state where it is biased by a spring (30). When pushed against the spring (30) by the operation means (24a) constituting the lock release means (24) provided on the opposite side of the fixed piece (28b), it is configured to take the orthogonal attitude (P2). ,
The locking hole (28a) of the locking member (28) is formed such that a diameter d1 in a direction connecting the fixed piece (28b) and the operating means (24a) and a diameter d2 in a direction perpendicular thereto satisfy d1>d2. is formed,
By extrapolating a plurality of lock members (28) made of the plate members stacked together onto the rod member (13a), the plurality of lock members (28, 28) are locked in the oblique posture (P1). The edge of the hole (28a) forms a continuous surface with an L-shaped cross section, and the edge constitutes a tooth means (29) that engages the uneven means (25). slope device. By extrapolating a plurality of lock members (28) made of plate members provided with the locking holes (28a) onto the rod member (13a) in a stacked state, adjacent locks are placed in an oblique position (P1). Between the members (28, 28), a continuous surface with an L-shaped cross section is formed by the inner peripheral surface (29a) of the locking hole of one locking member and the peripheral surface (29b) of the locking hole of the other locking member. and the inner circumferential surface (29a) constitutes the tooth means (29),
The unevenness means (25) of the rod member (13a) has a gently inclined surface (25a) that comes into surface contact with the inner peripheral surface (29a) of the locking hole (28a) constituting the tooth means (29). 2. The slope device for eliminating steps according to claim 1, further comprising a steeply inclined surface (25b) that can freely come into contact with a peripheral surface (29b) of the locking hole (28a).

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