JP4985605B2 - Suction cup device - Google Patents

Description

  The present invention relates to a suction cup device.

The suction cup device is used when various articles are attached to the suction surface.
Many suction cup devices of this type include a suction cup, a central shaft that protrudes from the back of the suction cup, a skirt that covers the back of the suction cup, and an outer cylinder that protrudes from the center of the skirt and accommodates the central axis. And a mounting base.
In order to stabilize the suction state of the suction device to the suction surface, the suction surface of the suction cup faces the suction surface, the central axis is pressed against the suction surface, and the entire area of the suction surface contacts the suction surface. Then, from the initial suction state in which the tip of the skirt portion is in contact with the outer peripheral portion of the back surface, the central axis is displaced in a direction away from the suction surface, and the central portion of the suction surface is separated from the suction surface. There is also provided a lock lever that forms a final suction state (see Patent Document 1).
Japanese Utility Model Publication 4-133773

However, in the conventional suction cup device, the lock lever swings in a plane passing through the central axis. In other words, the lock lever swings because the lock lever swings in the thickness direction of the suction cup. It is necessary to secure a large space, which is disadvantageous in installing the suction cup device in a narrow place.
The present invention has been made in view of such circumstances, and an object of the present invention is not to secure a large space for the lock lever to swing, and it is advantageous to install the suction cup device in a narrow place. Is to provide.

In order to achieve the above-described object, the suction cup device of the present invention includes a suction cup in which one surface in the thickness direction is a suction surface to be suctioned by the suction target surface and the other surface is a back surface, A central axis projecting from the center along the thickness direction away from the back surface, a skirt portion covering the back surface of the suction cup, and an outer cylinder portion projecting from the center of the skirt portion and accommodating the central shaft A locking lever coupled to the central shaft so as to be rotatable between an initial position and a locking position in the circumferential direction of the central axis, and the locking lever in the circumferential direction of the central axis. A coil spring that biases the central axis in a direction away from the attracted surface and a whole area of the attracting surface is brought into contact with the attracted surface, and the tip of the skirt portion is placed on the outer peripheral portion of the back surface. Or radius of the back surface When the lock lever is rotated from the initial position to the lock position from the initial suction state in contact with the location of the outside suction surface, the center axis is displaced in a direction away from the suction surface. A cam mechanism that forms a suction state and holds the lock lever in the locked position, and the lock lever is rotatably coupled to the central axis inside the outer cylindrical portion, and from this portion, the A lever portion that protrudes radially outward of the central axis and is operated to rotate, and is formed to extend in the circumferential direction on the outer cylindrical portion, and the lever portion protrudes radially outward of the outer cylindrical portion. A notch that allows rotation between the initial position and the lock position is provided, and the initial position is determined by locking the lever part at one end in the extending direction of the notch, Leva Parts By is engaged with the extending direction of the other end of the cutout portion, the limit position for allowing the rotation of the locking position direction from the initial position is determined, by the coil spring, the center from the initial adsorption state An intermediate suction state in which a shaft is displaced in a direction away from the suction surface is formed, and the final suction state is determined by rotating the lock lever from the initial position to the lock position from the intermediate suction state. the formed by causing further displaced in a direction away from the attaching object face and characterized Rukoto.
Further, the suction cup device of the present invention includes a suction cup in which one surface in the thickness direction is a suction surface to be suctioned by the suction target surface and the other surface is a back surface, and the center of the back surface of the suction cup in the thickness direction. A mounting shaft having a central axis projecting in a direction away from the rear surface, a skirt portion covering the rear surface of the suction cup, and an outer cylindrical portion that protrudes from the center of the skirt portion and accommodates the central shaft; A lock lever coupled to the central axis so as to be rotatable between an initial position and a lock position in a circumferential direction of the central axis; and urging the lock lever to the initial position in a circumferential direction of the central axis A coil spring that urges a central axis in a direction away from the attracted surface, and the coil spring makes the entire area of the attracting surface contact the attracted surface, and the lower end of the skirt portion is on the outer peripheral portion of the back surface, or , The back An intermediate suction state in which the central axis is displaced in a direction away from the attracted surface is formed from an initial attracted state brought into contact with the location of the attracted surface on the radially outer side. A cam mechanism is provided that forms a final suction state in which the central axis is displaced further away from the suction surface by rotation from the initial position to the lock position, and that holds the lock lever in the lock position; The lock lever includes a portion that is rotatably coupled to the central axis inside the outer cylindrical portion, and a lever portion that protrudes radially outward from the central shaft from this portion and is rotated. A cylindrical portion is formed extending in the circumferential direction, and the lever portion projects outward in the radial direction of the outer cylindrical portion to allow rotation of the lever portion between the initial position and the lock position. The initial position is determined by locking the lever portion to one end in the extending direction of the notched portion, and the lever portion is locked to the other end in the extending direction of the notched portion. Thus, a limit position that allows rotation in the lock position direction from the initial position is determined.

According to the present invention, since the final suction state of the suction cup device can be obtained by rotating the lock lever around the central axis, it is advantageous in mounting the suction cup device in a narrow space.
Further, the initial position of the lock lever is determined using the notch of the outer cylinder portion, and the limit position that allows the lock lever to rotate from the initial position toward the lock position is determined. It is not necessary to provide a member such as a stopper for determining the limit position, which is advantageous in reducing the number of parts and reducing the size.

Next, embodiments of the present invention will be described with reference to the drawings.
1 is a cross-sectional view showing a non-adsorption state of the suction cup device 10 of the present embodiment, FIG. 2 is a cross-sectional view showing an initial suction state of the suction cup device 10, and FIG. 3 is a cross-sectional view showing an intermediate suction state of the suction cup device 10. 4 is a cross-sectional view showing a final suction state of the suction cup device 10, FIG. 5A is a perspective view showing an intermediate suction state of the suction cup device 10, and FIG. 4B is a perspective view showing a final suction state of the suction cup device 10. .
6 is a perspective view of the suction cup 12, FIG. 7 is a sectional view of the suction cup 12, and FIG.
FIGS. 9A and 9B are perspective views of the second member 18 </ b> B constituting the lock lever 18, and FIGS. 9C and 9D are perspective views of the first member 18 </ b> A constituting the lock lever 18.
FIG. 10 is a perspective view of the coil spring 20, and FIG. 11 is an operation explanatory view of the cam mechanism 22.

The suction cup device 10 shown in FIG. 1 supports, for example, a display panel of a car navigation device or a television device on a dashboard in a vehicle cabin, and supports a controller for remotely controlling various in-vehicle devices. To do.
As shown in FIG. 1, the suction cup device 10 according to the present embodiment includes a suction cup 12, a central shaft 14, a mounting base 16, a lock lever 18, a coil spring 20, and a cam mechanism 22 (see FIG. 11). And so on.

As shown in FIGS. 1 and 6, the suction cup 12 has a disk shape, and one surface in the thickness direction is a concave suction surface 24 and the other surface is a convex back surface 26.
As the suction cup 12, various conventionally known elastic materials used for the conventional suction cup 12, such as a synthetic resin material having elasticity, such as urethane, styrene, and silicon resin, can be used.
It should be noted that a piece 12 </ b> A for detachment operation extending in the radially outward direction of the suction cup 12 is provided on the outer edge of the suction cup 12.
Also, various conventionally known configurations can be adopted as the suction cup 12.
Further, for example, as shown in FIGS. 1 and 7, the suction cup 12 may be configured to include a disk-shaped suction cup body 28 that forms the back surface 26 and a gel layer 30 that forms the suction surface 24. Good.

As with the suction cup 12, the suction cup main body 28 is made of a variety of conventionally known elastic materials used for the conventional suction cup 12, such as a synthetic resin material having elasticity, such as urethane, styrene, or silicon resin. It can be used.
The gel layer 30 is made of gel, and a concave mounting surface 2802 is formed on the surface of the suction cup body 28 positioned opposite to the back surface 26. The mounting surface 2802 is joined to cover the mounting surface 2802, and the suction surface 24 is The gel layer 30 is formed on the surface.
As such a gel, a polyethylene-based, styrene-based, or silicone-based synthetic resin-based gel can be used. As a polyethylene-based gel, for example, the commercial name of Cosmo Keiki Co., Ltd. Can be used. As the styrenic gel, for example, a commercially available product name “NAGFLEX” of INOAC CORPORATION can be used. As the silicon-based gel, for example, a commercially available product name “αGEL” (alpha gel) of Geltech Co., Ltd. can be used.
In addition, the gel layer 30 can be bonded to the attachment surface 2802 by a method such as two-color molding or bonding using an adhesive.
When the adsorption surface 24 is constituted by the gel layer 30, even if the adsorption surface 2 is formed as a skin-textured surface, a rough uneven surface, or a rough surface, The surface 24 deforms following the unevenness, and the suction surface 24 can be in close contact with the uneven surface or the rough surface without interposing a gap between the uneven surface, and the suction cup 12 can be securely attached to the uneven surface or the rough surface. This is advantageous in securely attaching various articles to the attracted surface 2 such as a leather surface of the dashboard panel.

As shown in FIG. 1, the central shaft 14 protrudes from the central portion of the back surface 26 of the suction cup 12 along the thickness direction of the suction cup 12 (along the central axis of the suction surface 24) away from the back surface 26. ing.
The central shaft 14 is formed of a rigid material, for example, a metal or a hard synthetic resin, and the lower end of the central shaft 14 is embedded in the central bulging portion of the suction cup 12.

The mounting base 16 supports the display panel and the controller on the suction cup 12.
The mounting base 16 is formed of a material having rigidity such as a hard synthetic resin.
As shown in FIG. 8, the mounting base 16 includes a skirt portion 32, an outer cylindrical portion 34, a mounting portion 36, and the like.

The skirt portion 32 covers the back surface 26 of the suction cup 12 and has a spherical shape.
As shown in FIG. 1, an elastic member 38 is provided on the entire periphery of the tip of the skirt portion 32.
The elastic member 38 is formed of an elastic material having a hardness lower than that of the elastic material constituting the suction cup 12 so that the elastic member 38 is easily deformed in accordance with the shape of the attracted surface 2. That is, even when the attracted surface 2 has a non-planar shape such as a spherical surface or a cylindrical surface, the elastic member 38 is deformed following the shape, and the sucker 12 is moved to the non-planar attracted surface. This is advantageous for reliably adsorbing to 2.
More specifically, the suction cup 12 is made of an elastic material having a JIS-A hardness of 70 or more, and the elastic member 38 is made of an elastic material having a JIS-A hardness of 40 or more and less than 70.
As such an elastic material, for example, urethane foam can be used. For example, a trade name “PORON” of Inoac Corporation, which is a commercial product, can be used.
As shown in FIG. 1, the elastic member 38 has a thickness in a direction parallel to the thickness direction of the suction cup 12 and is centered on the center of the suction cup 12 (centered on the center of the skirt portion 32). It has a strip shape.
The elastic member 38 is a portion of the skirt portion 32 that comes into contact with the back surface 26 of the suction cup 12 in an initial suction state, an intermediate suction state, and a final suction state, which will be described later. The elastic member 38 may be omitted, and the tip of the skirt portion 32 may be brought into direct contact with the outer peripheral portion of the back surface 26 of the suction cup 12, or as shown in FIG. You may make a front-end | tip contact | abut the location of the to-be-adsorbed surface 2 located in the outer side of the suction cup 12. FIG.

The outer cylinder portion 34 stands from the center of the skirt portion 32, and the central shaft 14 is accommodated inside thereof.
As shown in FIGS. 1 and 8, an intermediate wall 40 protruding inward in the radial direction is provided on the inner periphery of the intermediate portion in the axial direction of the outer cylindrical portion 34.
Further, cams 42 extending along the circumferential direction of the inner circumference of the outer cylinder portion 34 are respectively provided at two positions spaced by 180 degrees on the inner circumference of the outer cylinder portion 34 located on the intermediate wall 40. ing.
As shown in FIGS. 8 and 11, each cam 42 includes an inclined cam 4202 that extends in the circumferential direction of the inner periphery of the outer cylindrical portion 34 while being displaced in the tip direction of the central shaft 14, and the central shaft 14. An upper cam 4204 that is connected to the upper end of the inclined cam 4202 that is most displaced in the direction of the tip of the outer cylinder 34 and extends along the circumferential direction of the inner periphery of the outer cylindrical portion 34 at substantially the same height as the upper end, It includes a locking convex portion 4206 provided at a location near the inclined cam 4202.
Further, as shown in FIG. 8, a notch portion 4210 is formed extending along the circumferential direction of the outer cylinder portion 34 at the end portion in the axial direction of the outer cylinder portion 34 that is separated from the suction cup 12. This notch portion 4210 is for rotating the lock lever 18 between the initial position and the lock position. More specifically, an initial position is determined by locking a lever portion 46 described later to one end of the extending portion 4210 in the extending direction, and the lever portion 46 is locked to the other end of the extending portion 4210 in the extending direction. Thus, the limit position that allows the lock lever 18 to rotate from the initial position toward the lock position is determined .

As shown in FIG. 1, the attachment portion 36 is provided at an end portion in the axial direction of the outer cylindrical portion 34 that is separated from the suction cup 12.
The attachment part 36 is a place to which a product installed on the attracted surface 2 is attached by the suction cup device 10. In the present embodiment, this product is, for example, a controller for remotely controlling a display panel and various in-vehicle devices.

As shown in FIG. 1, the lock lever 18 is not movable in the axial direction at the tip of the central shaft 14, and the initial position (see FIG. 5A) and the locked position (see FIG. 5 (FIG. 5A)). B) is coupled to the central shaft 14 so as to be rotatable.
The lock lever 18 is formed of a material having rigidity such as a hard synthetic resin.
The lock lever 18 is inserted between the outer periphery of the central shaft 14 and the inner periphery of the outer cylindrical portion 34 and is coupled to the central shaft 14 so as not to move in the axial direction of the central shaft 14 and to be rotatable around the central shaft 14. And an inner cylinder portion 44 and a lever portion 46 for rotating operation that protrudes outward from the inner cylinder portion 44 in the radial direction of the inner cylinder portion 44.
In the present embodiment, as shown in FIG. 9, the lock lever 18 includes two members, a first member 18A and a second member 18B.
The first member 18 </ b> A includes a cylindrical portion 1802 and a first end face wall 1804 that closes one axial end of the cylindrical portion 1802, and the lever portion 46 projects from the cylindrical portion 1802. .
The second member 18B has a cylindrical portion 1812 and a second end face wall 1814 that closes one axial end of the cylindrical portion 1812, and the axial direction of the cylindrical portion 1812 that is located closer to the suction cup 12. Protrusions 1816 that engage with the cams 42 are formed at two positions at 180 ° intervals on the other end, and a hole 1818 is formed at the center of the second end face wall 1814.
In the present embodiment, as shown in FIG. 11, the cam mechanism 22 is configured by the cam 42 of the outer cylindrical portion 34 and the protrusion 1816 of the second member 18B.

The assembly of the first member 18A and the second member 18B is performed as follows.
First, as shown in FIGS. 1 and 9, the cylindrical portion 1812 of the second member 18B is inserted between the outer periphery of the central shaft 14 and the inner periphery of the outer cylindrical portion 34, and the tip of the central shaft 14 is inserted into the hole 1818. A stop ring 1820 is attached to the central shaft 14 projecting from the hole 1818, and the second member 18B is axially immovable at the tip of the central shaft 14, and the circumferential direction of the central shaft 14 To be rotatably coupled.
Next, the first member 18A is fitted and fixed to the outside of the second member 18B.
In this fitting and fixing, the projecting portion 1822 (see FIG. 9B) of the cylindrical portion 1812 of the second member 18B is replaced with the notch 1824 of the cylindrical portion 1802 of the first member 18A (see FIG. 9D). And the convex portion 1826 on the inner periphery of the cylindrical portion 1802 of the first member 18A (see FIG. 9D) is the concave portion 1828 on the outer periphery of the cylindrical portion 1812 of the second member 18B (see FIG. 9A). ))).
Therefore, in the present embodiment, the inner cylindrical portion 44 (see FIG. 1) is configured by the cylindrical portion 1802 of the first member 18A and the cylindrical portion 1812 of the second member 18B.
Then, the first and second members 18A and 18B are attached to the central shaft 14 so that the lever portion 46 is positioned on the notch portion 4210 (see FIG. 8). More specifically, the lever portion 46 is in the initial position. The protrusion 1816 is attached so as to be positioned between the two cams 42 in a state where the protrusion 1816 is positioned at one end in the extending direction of the notch 4210.
Further, the first end face wall 1804 and the second end face wall 1814 are close to each other with the first and second members 18A and 18B attached to the central shaft 14, and therefore are located closer to the front portion of the central shaft 14. A first end face wall 1804 that closes the end of the inner cylinder part 44 is provided at an end of the inner cylinder part 44 in the axial direction, and the inner cylinder part is located near the first end face wall 1804 inside the inner cylinder part. Thus, a second end face wall 1814 protruding radially inward of 44 is provided.

As shown in FIG. 10, the coil spring 20 has a winding portion 20A, one end 20B and the other end 20C that are bent at both ends of the winding portion 20A.
As shown in FIG. 1, the coil spring 20 has a winding part 20 </ b> A disposed around the central shaft 14 inside the outer cylinder part 34, and one end part 20 </ b> B of the coil spring 20 is locked to the outer cylinder part 34. The other end 20C is engaged with the lock lever 18 to urge the lock lever 18 to the initial position and to urge the outer cylindrical portion 34 and the lock lever 18 in the direction away from the central axis 14. .
More specifically, the coil spring 20 is disposed between the second end wall 1814 and the intermediate wall 40 around the central axis 14 as shown in FIG. One end 20B of the coil spring 20 is locked to the intermediate wall 40, and the other end 20C of the coil spring 20 is locked to the second end wall 1814 to urge the lock lever 18 to the initial position. At the same time, the outer cylindrical portion 34 and the lock lever 18 are urged in the direction of separating along the central axis 14.
In the present embodiment, the coil spring 20 has an elastic force for obtaining an intermediate suction state described later.

Next, the operation will be described.
The suction surface 24 of the suction cup 12 faces the suction surface 2, the central axis 14 is pressed against the suction surface 2, the entire suction surface 24 is brought into contact with the suction surface 2, and the tip of the skirt portion 32 is the outer peripheral portion of the back surface 26. 2 or FIG. 5A, the initial attracted state is obtained when the abutted surface 2 is brought into contact with the portion of the attracted surface 2 on the radially outer side of the back surface 26 (see FIG. 2A). The operation of pressing the central shaft 14 against the attracted surface 2 is performed by pressing the first end surface wall 1804 of the lock lever 18 with a finger.
When the lock lever 18 is rotated from the initial position to the lock position from this initial suction state, the center shaft 14 is forcibly displaced in the direction away from the attracted surface 2 by the cam mechanism 22, and FIG. 4 and FIG. The final adsorption state shown in FIG.
More specifically, when the lock lever 18 is rotated from the initial position to the lock position, as shown in FIG. 11, the protrusion 1816 slides on the inclined cam 4202, whereby the central shaft 14 moves away from the attracted surface 2. It is forcibly displaced in the direction. The projection 1816 eventually gets over the locking projection 4206 and reaches the upper cam 4204. The lock lever 18 tries to return to the initial position by the urging force of the coil spring 20, but the lock lever 18 remains in the lock position when the protrusion 1816 engages with the locking projection 4206.

In the present embodiment, when the finger is released from the first end face wall 1804 of the lock lever 18 in the initial suction state, the coil spring 20 enters the intermediate suction state shown in FIG.
The intermediate suction state is formed by the center axis 14 being displaced in a direction away from the attracted surface 2 by the elastic force of the coil spring 20 from the initial suction state.
Therefore, in the present embodiment, the final suction state is formed by further displacing the central shaft 14 in the direction away from the suction surface 2 by rotating the lock lever 18 from the initial position to the lock position from the intermediate suction state. The
The suction cup device 10 is firmly attached to the suction surface 2 in such a final suction state, and products such as a display panel and a controller for remotely controlling various in-vehicle devices are supported on the dashboard in the interior of the automobile. Is done.

Further, the suction cup device 10 is detached from the attracted surface 2 by picking the piece 12A and peeling the sucker 12 from the attracted surface 2.
When the suction cup 12 is removed from the attracted surface 2, the outer cylindrical portion 34 and the lock lever 18 are separated along the central axis 14 by the coil spring 20, and thus the protrusion 1816 is detached from the cam 42. The lock lever 18 is rotated from the lock position to the initial position by the urging force of the coil spring 20 and returned to the initial position.

Therefore, according to the present embodiment, the final suction state can be obtained by operating the lock lever 18, which is advantageous in firmly sucking the suction cup device 10 to the suction target surface 2.
In addition, since the lock lever 18 is operated by rotating the lock lever 18 around the central axis 14, the lock lever 18 can be rotated without securing a large space. This is advantageous for attachment.
Further, when the suction cup device 10 is removed from the attracted surface 2, the lock lever 18 is automatically returned to the initial position, which is advantageous in improving the operability of the suction cup device 10.
Although the intermediate suction state may be omitted, if the intermediate suction state is formed using the coil spring 20 as in the present embodiment, the suction cup device 10 is firmly attached to the suction surface 2 according to the final suction state. This is advantageous.
Further, in the present embodiment, the operation of urging the lock lever 18 from the lock position to the initial position and the operation of urging the outer cylindrical portion 34 and the lock lever 18 in the direction away from the central axis 14 are performed. Since this is realized by the single coil spring 20, it is advantageous in reducing the number of parts and simplifying the structure.

  In addition, in embodiment, although the suction cup apparatus 10 for attaching a display panel, the controller of various vehicle equipment, etc. was demonstrated, the articles | goods supported by the suction cup apparatus 10 are not limited to articles | goods for vehicle installation, and various It can be applied to various articles.

It is sectional drawing which shows the non-adsorption state of the suction cup apparatus 10 of this Embodiment. It is sectional drawing which shows the initial suction state of the suction cup apparatus. It is sectional drawing which shows the intermediate | middle adsorption | suction state of the suction cup apparatus. It is sectional drawing which shows the final adsorption state of the suction cup apparatus. (A) is a perspective view showing an intermediate suction state of the suction cup device 10, and (B) is a perspective view showing a final suction state of the suction cup device 10. It is a perspective view of the suction cup 12. It is sectional drawing of the suction cup 12. FIG. FIG. 6 is a perspective view of the mounting base 16. (A), (B) is a perspective view of the 2nd member 18B which comprises the lock lever 18, (C), (D) is a perspective view of the 1st member 18A which comprises the lock lever 18. FIG. 2 is a perspective view of a coil spring 20. FIG. FIG. 6 is an operation explanatory diagram of the cam mechanism 22.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Suction device, 12 ... Suction cup, 14 ... Center axis, 16 ... Mounting base, 18 ... Lock lever, 20 ... Coil spring, 22 ... Cam mechanism, 24 ... Suction surface, 26 ... Back side, 32 ... skirt part, 34 ... outer cylinder part.

Claims (3)

A suction cup in which one surface in the thickness direction is an adsorption surface to be adsorbed on the adsorption surface and the other surface is a back surface;
A central axis protruding in the direction away from the back surface along the thickness direction from the center of the back surface of the suction cup;
A mounting base having a skirt portion that covers the back surface of the suction cup, and an outer cylindrical portion that protrudes from the center of the skirt portion and accommodates the central axis;
A lock lever coupled to the central shaft so as to be rotatable between an initial position and a locked position in a circumferential direction of the central shaft;
A coil spring that biases the lock lever toward the initial position in the circumferential direction of the central axis and biases the central axis in a direction away from the attracted surface;
From the initial adsorption state in which the entire area of the adsorption surface is brought into contact with the surface to be adsorbed, and the tip of the skirt portion is brought into contact with the outer peripheral portion of the back surface or the position of the surface to be adsorbed radially outside of the back surface, A cam mechanism that forms a final suction state in which the central axis is displaced in a direction away from the suctioned surface when the lock lever is rotated from the initial position to the lock position and that holds the lock lever in the lock position; With
The lock lever includes a portion that is rotatably coupled to the central axis inside the outer cylindrical portion, and a lever portion that protrudes radially outward from the central shaft from this portion and is rotated.
A notch that is formed in the outer cylinder so as to extend in the circumferential direction and allows the lever to protrude radially outward of the outer cylinder so as to allow the lever to rotate between the initial position and the lock position. Is provided,
The initial position is determined by locking the lever portion to one end in the extending direction of the notch,
The limit position that allows rotation in the lock position direction from the initial position is determined by locking the lever portion to the other end in the extending direction of the notch ,
The coil spring forms an intermediate suction state in which the central axis is displaced from the initial suction state in a direction away from the attracted surface,
The final suction state is formed by further displacing the central axis in a direction away from the suction surface by rotation of the lock lever from the initial position to the lock position from the intermediate suction state.
Suction cup device. A suction cup in which one surface in the thickness direction is an adsorption surface to be adsorbed on the adsorption surface and the other surface is a back surface;
A central axis protruding in the direction away from the back surface along the thickness direction from the center of the back surface of the suction cup;
A mounting base having a skirt portion that covers the back surface of the suction cup, and an outer cylindrical portion that protrudes from the center of the skirt portion and accommodates the central axis;
A lock lever coupled to the central shaft so as to be rotatable between an initial position and a locked position in a circumferential direction of the central shaft;
A coil spring that biases the lock lever toward the initial position in the circumferential direction of the central axis and biases the central axis in a direction away from the attracted surface;
From the initial adsorption state in which the entire area of the adsorption surface is brought into contact with the surface to be adsorbed, and the tip of the skirt portion is brought into contact with the outer peripheral portion of the back surface or the position of the surface to be adsorbed radially outside of the back surface, A cam mechanism that forms a final suction state in which the central axis is displaced in a direction away from the suctioned surface when the lock lever is rotated from the initial position to the lock position and that holds the lock lever in the lock position; With
The lock lever includes a portion that is rotatably coupled to the central axis inside the outer cylindrical portion, and a lever portion that protrudes radially outward from the central shaft from this portion and is rotated.
A notch that is formed in the outer cylinder so as to extend in the circumferential direction and allows the lever to protrude radially outward of the outer cylinder so as to allow the lever to rotate between the initial position and the lock position. Is provided,
The initial position is determined by locking the lever portion to one end in the extending direction of the notch,
The limit position that allows rotation in the lock position direction from the initial position is determined by locking the lever portion to the other end in the extending direction of the notch ,
The portion of the lock lever that is rotatably coupled to the central shaft inside the outer cylindrical portion is inserted between the outer periphery of the central shaft and the inner periphery of the outer cylindrical portion, and extends in the axial direction of the central shaft. An inner cylindrical portion coupled to the central axis so as to be immovable and rotatable about the central axis;
The lever part protrudes outward in the radial direction of the inner cylinder part from the inner cylinder part,
A first end face wall that closes an end of the inner cylindrical portion is provided at an axial end of the inner cylindrical portion located closer to the tip of the central axis;
A second end face wall projecting radially inward of the inner cylinder part is provided at a location near the first end face wall inside the inner cylinder part;
The first end wall is a pressing portion for pressing the central axis against the surface to be attracted when forming the initial suction state,
The second end face wall is coupled to the tip of the central axis so as to be immovable in the axial direction of the central axis and rotatable around the central axis;
An intermediate wall projecting radially inward is provided on the inner periphery of the intermediate portion in the axial direction of the outer cylindrical portion,
The coil spring is disposed between the second end face wall and the intermediate wall around the central axis;
One end of the coil spring is locked to the intermediate wall, and the other end of the coil spring is locked to the end wall,
Suction cup device. A suction cup in which one surface in the thickness direction is an adsorption surface to be adsorbed on the adsorption surface and the other surface is a back surface;
A central axis protruding in the direction away from the back surface along the thickness direction from the center of the back surface of the suction cup;
A mounting base having a skirt portion that covers the back surface of the suction cup, and an outer cylindrical portion that protrudes from the center of the skirt portion and accommodates the central axis;
A lock lever coupled to the central shaft so as to be rotatable between an initial position and a locked position in a circumferential direction of the central shaft;
A coil spring that biases the lock lever toward the initial position in the circumferential direction of the central axis and biases the central axis in a direction away from the attracted surface;
The entire area of the suction surface is brought into contact with the surface to be attracted by the coil spring, and the lower end of the skirt portion is brought into contact with the outer peripheral portion of the back surface or the location of the surface to be attracted radially outward of the back surface. From the initial adsorption state, an intermediate adsorption state is formed by displacing the central axis in a direction away from the adsorption surface,
By rotating the lock lever from the initial position to the lock position from the intermediate suction state, a final suction state is formed in which the central axis is displaced further away from the suction surface, and the lock lever is locked. A cam mechanism is provided to hold in place,
The lock lever includes a portion that is rotatably coupled to the central axis inside the outer cylindrical portion, and a lever portion that protrudes radially outward from the central shaft from this portion and is rotated.
A notch that is formed in the outer cylinder so as to extend in the circumferential direction and allows the lever to protrude radially outward of the outer cylinder so as to allow the lever to rotate between the initial position and the lock position. Is provided,
The initial position is determined by locking the lever portion to one end in the extending direction of the notch,
The limit position that allows the rotation from the initial position to the lock position direction is determined by locking the lever portion to the other end of the extending portion in the extending direction.
Suction cup device.

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