TWM587718U - Adjustable foot contact structure - Google Patents

Abstract

A kind of adjusting foot is a straight rod combined with a foot seat and can rotate with each other. At the junction of the straight pole and the foot, a limiting section of the straight pole faces a recess in the foot. Under the action of gravity, the limiting section cooperates with the recess to form a contact structure that maintains line contact. The contact structure includes: the restricting section forms a convex curved surface, and the foot seat surrounds a concave conical surface of the cavity. Alternatively, the contact structure includes: the restricting section forms a convex curved surface, and the foot seat surrounds another convex curved surface of the cavity. In this way, the contact structure of the present invention maintains line contact, which effectively solves the disadvantage of the inflexible rotation caused by surface contact of the adjusting foot of the prior art.

Description

Adjust foot contact structure

This creation relates to the technique of supporting articles, especially a contact structure of an adjusting foot installed at the bottom of the article to adjust the height.

FIG. 5 is an exploded perspective view. In conjunction with the combined cross-sectional view of FIG. 6, a specific structure of the known adjusting leg 80 is described, which is composed of a straight rod 81 and a leg base 90. Therefore, the adjusting foot 80 is also called an adjusting foot seat.

The straight rod 81 is made of metal, and an external thread section 82, a convex section 83, a restricting section 84, and a combining section 85 are formed between the two ends. The joint section 85 is combined with a ring piece 86 through a hole 94 in the axis of the foot 90.

The foot 90 is composed of a shell 91 and a cushion 92. The casing 91 is a metal shell, and the metal shell forms a cavity 93 that surrounds the hole 94 and forms a contact structure with the restricting section 84. The bottom surface of the cushion block 92 is plunged into an assembly chamber 95. The assembly chamber 95 communicates with the hole 94 and is used for receiving the ring piece 86 fixed on the bonding section 85.

The contact structure includes a convex curved surface of the restricting section 84 and a concave curved surface of the casing 91 surrounding the cavity 93. Because the curvatures of the convex curved surface and the concave curved surface are approximately the same, the contact structure (that is, the restricting section 84 and the housing 91) maintains surface contact (in terms of axial cross-section, it is line contact).

When the straight rod 81 and the casing 91 contact the air to rust and rust, the concave curved surface combined with the convex curved surface prevents the straight rod 81 from rotating relative to the foot 90, and the flexibility of adjusting the rotation of the foot 80 is huge.

Therefore, how to improve the contact structure of the adjustment foot has become an urgent problem to be solved in this creation.

In view of this, this creation provides a new adjusting foot, the main purpose of which is to: adopt a line contact contact structure to effectively solve the disadvantages of surface contact affecting the flexibility of the adjusting foot rotation.

Due to the above-mentioned purpose, the contact structure of this creative adjustment foot includes:

A straight rod and a foot that can be rotated and combined with each other;

At the junction of the straight pole and the foot, a restricted section of the straight pole faces a recess in the foot; and

Under the action of gravity, the limiting section cooperates with the recess to form a contact structure that maintains line contact.

The contact structure includes: the restricting section forms a convex curved surface, and the foot seat surrounds a concave conical surface of the cavity.

Alternatively, the contact structure includes: the restricting section forms a convex curved surface, and the foot seat surrounds another convex curved surface of the cavity.

In this way, the contact structure created by the present invention uses a convex curved surface and a conical surface to maintain line contact, or two convex curved surfaces to maintain line contact, which effectively solves the disadvantage of the inflexible rotation caused by the surface adjustment of the prior art adjusting feet.

In order to make the above-mentioned objects, features and advantages of this creation more comprehensible, one or more preferred embodiments are described in detail below with the accompanying drawings.

FIG. 1 is a combined perspective view illustrating that the specific structure of the adjusting foot 10 is composed of a straight rod 20 and a foot base 30.

In the figure, the straight rod 20 has a convex portion 22 and an external thread section 23. The convex portion 22 is close to the foot base 30 and is fixed on the straight rod 20. The male thread section 23 is from the convex portion 22 to a free end 21 of the straight rod 20, and a nut 40 is screwed onto the male thread section 23.

FIG. 2 is a combined sectional view of the adjustment leg 10. The figure shows that the distance between the nut 40 and the convex portion 22 can be adjusted, which helps the straight rod 20 and the adjusting foot 10 to be installed on the bottom surface of an article (not shown in the figure).

In addition, the straight rod 20 extends a restriction section 24 and a joint section 25 along the axial center direction. The restriction section 24 connects the convex portion 22 and the joint section 25 together. The diameter of the coupling section 25 is smaller than the diameter of the limiting section 24, and an internally threaded hole 26 is formed in the center of the coupling section 25 and penetrates into the limiting section 24.

When the bonding section 25 passes through a recess 32 on the top surface of the foot seat 30, the bonding section 25 passes through a through hole 31 to an assembly chamber 33 that is trapped in the bottom surface of the foot seat 30, allowing a fastener 42 like a bolt or screw to pass through A washer 41 locks the internally threaded hole 26 of the coupling section 25. Therefore, the two ends of the through hole 31 at the axial center portion of the foot base 30 lead to the cavity 32 and the assembly chamber 33 respectively.

Under the action of gravity (including the weight of the straight rod 20 and the article), the restriction section 24 is blocked by the wall of the foot socket 30 surrounding the cavity 32, and together forms a contact structure. The diameter of the coupling section 25 is smaller than the diameter of the through hole 31, and the gasket 41 is pushed away from the wall surface of the assembly chamber 33 by the coupling section 25, so that the straight rod 20 can be flexibly rotated relative to the foot seat 30. At the same time, the spacer 41 prevents the straight rod 20 from leaving the foot base 30.

The leg base 30 is a disc body, and the disc body is preferably made of a non-metallic material, such as plastic, rubber, or a polymer. For a straight bar 20 or an article, the foot base 30 has a shock absorbing effect and a buffering effect.

FIG. 3 is an enlarged view illustrating that the first embodiment of the contact structure 50 is composed of a convex curved surface 51 and a conical surface 52.

The convex curved surface 51 referred to here generally refers to an end surface of the end of the restricting section 24 surrounding the joint section 25, and the end surface is a convex curved surface.

The conical surface 52 referred to here generally refers to a wall surface surrounded by the foot seat 30 into the cavity 32. The wall surface is a concave conical shape, and the opening diameter of the conical surface 52 to the top surface of the foot seat 30 is larger than the conical surface 52. The opening diameter of the connection through hole 31.

In particular, the convex curved surface 51 and the conical surface 52 maintain a circle of line contact (the convex curved surface 51 and the conical surface 52 maintain two contact points from the axial cross section), even if the weight of the article is in contact with the straight rod 20 The structure 50 is transmitted to the foot base 30 and does not affect the flexible characteristics of the rotation of the straight rod 20 relative to the foot base 30.

FIG. 4 is an enlarged view illustrating the specific structure of the second embodiment of the contact structure 50, which is different from the first embodiment in that: first, the foot base 30 is composed of a housing 34 and a pad 35. The casing 34 is a metal shell, and the metal shell is attached to the outer surface of a non-metallic cushion 35. Therefore, the through hole 31 is composed of a hole 36 of the housing 34 and a hole 37 of the pad 35.

Second, the contact structure 50 is composed of two convex curved surfaces 51 and 53. The convex curved surface 53 refers to a wall surface surrounded by the housing 34 into another recess 38. The wall surface is also a convex curved surface and maintains a circle of line contact with the convex curved surface 51 of the restricting section 24 (viewed from the axial section) , But two contact points), also does not affect the flexible characteristics of the rotation of the straight rod 20 relative to the foot 30.         

"Previous Technology"
80‧‧‧ adjust feet

81‧‧‧Straight
82‧‧‧External thread section

83‧‧‧ convex
84‧‧‧ restricted section

85‧‧‧combination
86‧‧‧ Ring
90‧‧‧foot

91‧‧‧shell
92‧‧‧ spacer

93‧‧‧Dent
94‧‧‧hole

95‧‧‧Assembly Room "This Creation"
10‧‧‧ adjust feet
20‧‧‧Straight

21‧‧‧Free End
22‧‧‧ convex

23‧‧‧External thread section
24‧‧‧ restricted section

25‧‧‧Combination
26‧‧‧ Internal threaded hole
30‧‧‧foot

31‧‧‧through hole
32, 38‧‧‧ pits

33‧‧‧Assembly room
34‧‧‧shell

35‧‧‧ spacer
36, 37‧‧‧ holes
40‧‧‧nut

41‧‧‧Gasket
42‧‧‧ Fasteners
50‧‧‧contact structure

51, 53‧‧‧ convex surface
52‧‧‧conical surface

Fig. 1 is a combined perspective view of an adjustment leg.
Fig. 2 is a combined sectional view of the adjustment leg.
Fig. 3 is an enlarged sectional view of the first embodiment of the contact structure.
Fig. 4 is an enlarged sectional view of a second embodiment of the contact structure.
Fig. 5 is an exploded perspective view of the prior art of the adjustment foot.
Fig. 6 is an assembled sectional view of the adjusting leg of Fig. 5;

Claims (5)

A contact structure of an adjustment foot includes:
A straight rod (20) and a foot (30) that can be combined to rotate with each other;
At the junction of the straight rod (20) and the foot (30), a restricted section (24) of the straight rod (20) faces a recess (32) of the foot (30); and under the action of gravity, The limiting section (24) cooperates with the recess (32) to form a contact structure (50) that maintains line contact. The contact structure of the adjusting foot is described in item 1 of the scope of patent application, wherein the contact structure (50) includes: the restricting section (24) forms a convex curved surface (51), and the foot seat (30) surrounds a cavity ( 32) of a concave conical surface (52). As described in item 2 of the scope of patent application, the contact structure of the adjustment foot, wherein the foot seat (30) is composed of a shell (34) attached to a pad (35), and the recess (38) is formed in On the housing (34). The contact structure of the adjusting foot is described in item 1 of the scope of patent application, wherein the contact structure (50) includes: the restricting section (24) forms a convex curved surface (51), and the foot seat (30) surrounds a cavity ( 38) of another convex surface (53). The contact structure of the adjusting foot according to item 4 of the scope of patent application, wherein the foot base (30) is composed of a shell (34) attached to a pad (35), and the recess (38) is formed in On the housing (34).