WO2011075934A1

WO2011075934A1 - Vacuum suction disc

Info

Publication number: WO2011075934A1
Application number: PCT/CN2010/001402
Authority: WO
Inventors: 何文徽
Original assignee: He Wenhui
Priority date: 2009-12-22
Filing date: 2010-09-13
Publication date: 2011-06-30
Also published as: CN102102699B; CN102102699A

Abstract

A vacuum suction disc includes a housing (1), a lower support (2), a torsion spring (3) and a flexible suction body (4). The housing (1) is provided with a slipway (5) and a through hole (6). The lower support (2) comprises plunger holes (7) and bosses (8) thereon. The flexible suction body (4) comprises a joint pin (9) in the center thereof and the joint pin (9) has a stopper (10) nearby. The flexible suction body (4) is provided with plungers (11), and the joint pin (9) extends through the through hole (6) of the housing (1). The boss (8) is provided with a positioning ball (12) thereon and the boss (8) contacts with the slipway (5) through the positioning ball (12). The slipway (5) is provided with positioning concave holes (13) located on the moving path of the positioning ball (12) on the slipway (5). The joint pin (9) is provided thereon with a collar groove (14) located on the position where the joint pin (9) extends out from the through hole (6), and a collar (15) clamps the collar groove (14). The joint pin (9) has a polygonal cross-section and is mounted with a hook (16) on the end thereof. On one end of the hook (16) there is a sink hole (17) having the same cross-section as the joint pin (9) and the sink hole (17) of the hook (16) is sleeved on the end of the joint pin (9). The suction disc can not only hang heavy objects, but also can hold heavy objects horizontally or upwardly. It is suitable for mounting on the sites such as home, office, shopping malls and hotels and so on to use.

Description

Vacuum chuck

Technical field

The invention belongs to daily hardware, in particular to a suction cup mounted on a smooth wall for supporting objects.

Background technique

The common knob type vacuum suction cup in the market pulls up the middle of the suction cup by rotating the slope in the rotary table to make it vacuum and can be attached to the wall for a long time. It is easy to install and use without damaging the wall. However, there are two shortcomings in the existing products: First, the hooks of the vacuum chuck are mostly made of round rods, and the round heads are directly inserted into the circular holes in the center of the suction cup, due to the round head and the round holes. The friction between the two is limited, so the hook is always deflected downwards after the object is hung, so that it cannot adapt to other ways of using the hook flat or upward; secondly, the climbing part in the vacuum chuck climbs to the top of the slope. Staying in the straight section, there is no locking function at the stop position, the dial of the suction cup is easily retracted when the foreign object is smallly rubbed, and the vacuum is released, so that the suction cup is detached from the wall.

Summary of the invention

In order to overcome the disadvantages of the prior art, the present invention provides a vacuum chuck in which the hooks are securely held in any orientation and are not easily unloaded after installation.

The invention comprises a box-shaped outer casing, a lower support, a torsion spring and a suction cup body; the inside of the outer casing has two or more sloped slides along the circumference of the casing, and the outer casing has a through hole at the center; the lower support is annular and has a plurality of plunger holes and two or more bosses; a suction column body has a connecting column, a stopper is arranged beside the connecting column, a plurality of plungers are arranged around the suction cup body, the connecting column passes through the through hole of the outer casing, and the plunger is embedded in the lower bearing The plunger hole; the two ends of the torsion spring are respectively in contact with the stopper and the outer casing; the feature is that there is a positioning ball on the boss, the boss is in contact with the slide through the positioning ball, and the positioning hole is located on the slideway, and the positioning concave hole is located in the positioning ball On the moving path on the slide rail; the connecting post has a snap ring groove, the collar groove is located at a portion where the connecting post protrudes from the through hole, and a collar is stuck on the collar groove; the connecting post has a polygonal cross section; A hook is mounted at the end, and one end of the hook has a counterbore having the same shape as the cross section of the connecting post, and the counterbore of the hook is sleeved on the end of the connecting post.

As a preferred construction of the invention, the boss has a sinking well and a spring, and the positioning ball and spring are mounted in the sinking well. 0. As another preferred configuration of the present invention, the positioning ball is fixed to the boss.

As a further improvement of the present invention, the connecting post has a square cross section; the hook has a screw hole, the screw hole and the counterbore penetrate, and the screw hole has a set screw.

The invention improves the connection between the suction cup and the hook into the polygonal axis and the polygonal counterbore, so that the hook is not deflected by the hanging object, and the slide self-locking structure is added, and the reliability of the suction suction is enhanced. The invention can not only hang heavy objects, but also can lift heavy objects or lift heavy objects. It is suitable for installation in homes, offices, shopping malls and hotels.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external view of an embodiment of the present invention;

Figure 2 is an external view of the removal of the collar and the outer casing of the embodiment 1 (the outer casing is cut away);

Figure 3 is an exploded view of the part of Embodiment 1;

Figure 4 is a development view of the position of the lower support and the boss when the embodiment 1 is in the adsorption state;

Figure 5 is a development view of the lower support and the boss when the embodiment 1 is in the unloading state;

Figure 6 is an external view of the hook of the embodiment 1;

Figure 7 is an external view of the hook of the embodiment 1 mounted on the suction cup;

Figure 8 is an external view of the removal of the collar and the outer casing of the embodiment 2 (the outer casing is partially cut);

Figure 9 is an external view of a towel rack composed of two suction cups.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

Referring to Figures 1 to 3, the outer casing 1 is made of metal or plastic, and the outer casing 1 has a box shape. The outer casing 1 is provided with a cylindrical retracting portion 25 in the center thereof, and has a through hole 6 therein; There are three slides 5 on the circumference, and each slide 5 is smoothly connected by a straight section and a slope; each slide 5 has a hemispherical positioning recess 13 .

The lower support 2 is made of metal or plastic, and the lower support 2 is annular, and there are sixteen plunger holes 7, three bosses 8 and three second bosses 22 uniformly distributed thereon; each boss 8 has a sinking well 19 and a spring 18, the positioning ball 12 is a Steel balls, steel balls and springs 18 are mounted in the caisson 19, and the positioning balls 12 can fall into the positioning recesses 13 in the chute 5 as they move over the chutes 5. The steel balls and springs are set to make the handle feel particularly good when the housing is rotated.

The center of the suction cup body 4 extends out of a connecting post 9. The connecting post is made of metal and its tail is fixed at the center of the suction cup made of flexible silicone rubber. The connecting post 9 has a square shape with a slit 27 formed thereon; a rectangular stopper 10 is provided beside the connecting post 9; and eight plungers 11 are provided around the flexible suction cup 4. Eight plungers 11 are respectively embedded in eight of the sixteen plunger holes 7 of the lower support 2; the connecting post 9 passes through the through hole 6 of the outer casing 1, and the connecting post 9 has a collar groove 14, the collar The groove 14 is located at a portion where the connecting post 9 protrudes from the through hole 6, and a collar 15 is caught on the collar groove 14.

The two ends of the torsion spring 3 respectively abut against the retaining block 10 and the catching groove 24 on the retracting portion 25, so that the elastic force of the torsion spring 3 always attempts to cause the positioning ball 12 to fall down the slope.

Referring to Fig. 4, when the outer casing 1 is moved to the right, the positioning ball 12 on the boss 8 of the lower support 2 is moved from the slope to the straight section, and then pressed into the positioning recess 13 by the spring 18, at which time the outer casing 1 and the lower support 2 The distance between the two is large, and the center of the flexible suction cup is pulled up. Since the outer casing 1 and the lower support 2 are locked, the outer casing 1 does not easily move to the left. The second boss 22 of the lower holder 2 and the shutter 23 of the outer casing 1 are used for the rotation limit of the outer casing 1. Referring to Figure 5, the housing 1 is forced to move to the left, forcing the positioning ball 12 on the boss 8 of the lower support 2 to move away from the positioning recess 13 from the straight section to the bottom of the slope, at which time the outer casing 1 and the lower bearing The distance between the two is small, and the center of the flexible suction cup is lowered.

Referring to Figures 6 and 7, a hook 16 is mounted at the end of the connecting column of the suction cup body. One end of the hook 16 has a square counterbore 17 of the same shape as the connecting post 9, and the counterbore 17 of the hook 16 is placed at the end of the connecting post 9. on. The hook 16 has a screw hole 20 through which the screw hole 20 and the counterbore 17 pass. The screw hole 20 is screwed with a set screw 21, and the screw is inserted into the crack of the connecting post when the hook is connected.

Referring to FIG. 8, the difference between Embodiment 2 and Embodiment 1 is that a hemispherical positioning convex ball 12 is extended from the upper surface of each boss 8, and the boss 8 is in contact with the sliding path of the outer casing by positioning the convex ball 12. This simplifies the structure. Next, the connecting post 9 at the center of the chuck body of Example 2 is made of ABS or PC plastic, which is injection molded in a suction cup made of silicone rubber. The core, on which no crack is provided, is pressed against the surface of the connecting post when the hook is attached; and the stopper 10 attached to the sucker body is cylindrical.

The above two embodiments are not exclusive embodiments of the present invention. In other embodiments, the cross section of the connecting post 9 may be any polygonal shape, such as a rectangle, a pentagon, a hexagon, etc., on the outer casing 1. The retracted portion 25 can also be eliminated, so that the through hole 6 is opened on the upper plane of the outer casing 1; the shape of the hook can also be varied. In Fig. 9, a towel rack composed of two vacuum chucks of the present invention and a crossbar is shown. In the figure, the crossbar 26 is a double-ended hook.

Claims

WO 2011/075934 Claim PCT/CN2010/001402

A vacuum chuck comprising a box-shaped outer casing (1), a lower support (2), a torsion spring (3) and a suction cup body (4); the outer casing (1) has more than two sides along the circumference of the casing a slideway with a slope (5), a through hole (6) in the center of the outer casing (1); the lower support (2) is annular, having a plurality of plunger holes (7) and two or more bosses (8); the suction cup body (4) has a connecting column (9) in the center, a stopper (10) is arranged beside the connecting column (9), and a plurality of plungers (11) are arranged around the suction cup body (4), and the connecting column ( 9) through the through hole (6) of the outer casing (1), the plunger (11) is inserted into the plunger hole (7) of the lower support (2); the two ends of the torsion spring (3) are respectively associated with the stopper (10) ) in contact with the outer casing (1);

The utility model is characterized in that: the boss (8) has a positioning ball (12), the boss (8) is in contact with the slide rail (5) through the positioning ball (12), and the sliding hole (5) has a positioning recess hole. (13), the positioning recess (13) is located on the moving path of the positioning ball (12) on the slide (5);

The connecting post (9) has a collar groove (14), and the collar groove (14) is located at a portion of the connecting post (9) extending through the through hole (6), and a collar (15) is stuck in the collar groove (14) on;

The connecting post (9) has a polygonal cross section; the end of the connecting post (9) is mounted with a hook (16), and one end of the hook (16) has a counterbore having the same shape as the cross section of the connecting post (9) ( 17), the counterbore (17) of the hook (16) is placed over the end of the connecting post (9).

2. The vacuum chuck according to claim 1, wherein: the boss (8) has a well (19) and a spring (18), and the positioning ball (12) and the spring (18) are mounted on the sink. Inside the well (19).

3. Vacuum chuck according to claim 1, characterized in that the positioning ball (12) is fixed to the boss (8).

4. Vacuum chuck according to claim 1, characterized in that the connecting post (9) has a square cross section.

The vacuum chuck according to claim 1, wherein: the hook (16) has a screw hole (20), and the screw hole (20) penetrates with the counterbore (17), and the screw hole (20) There are set screws (21) in it.