TWI755619B - Concave and convex fit structure that can be semi-vacuum connected - Google Patents

Abstract

A concave and convex fit structure that can be semi-vacuum connected, which includes a first connecting member having a groove, the groove has a wall surface and a bottom surface connected to the wall surface, a second connecting member having a body and a protruded rod connected to the body and inserted in the groove, the protruded rod has an outer wall surface and a top surface located at one end of the outer wall surface, the outer wall surface is attached to the wall surface, the top surface faces the bottom surface, a negative pressure space is arranged between the top surface and the bottom surface, the pressure in the negative pressure space is less than the external pressure, which can resist the reverse force applied by the user to the first and second connecting members, making the first connecting member stably connected to the second connecting member.

Description

Concave-convex matching structure for semi-vacuum connection

The present invention relates to a combination structure, in particular to a concave-convex matching structure.

Generally, the conventional combination structure adopts threaded cooperation. Taking the combination structure of environmental protection chopsticks as an example, in order to facilitate the storage of environmental protection chopsticks, the chopstick body is designed in two parts, and one chopstick body has a screw groove at one end. The other chopstick body is protruded with a screw lock part. When the user wants to use the environmentally friendly chopsticks, he will screw with the screw lock part through the screw groove, so that the two chopstick parts can be combined for use. When the user wants to store the chopstick body after use, he only needs to rotate the block body and withdraw the screw lock part from the screw groove to make the chopsticks weigh in two parts, which is convenient for storage; However, the conventional joint structure through threaded engagement is easy to cause the joint relationship to be unstable or even disengage due to vibration and slight rotation. In the case of chopsticks, the user may even move the chopsticks or rotate the chopsticks. The withdrawal will lead to unstable bonding relationship, so a concave-convex matching structure with tight bonding relationship is required.

The present invention provides a concave-convex matching structure, the main purpose of which is to make the bonding relationship more stable.

In order to achieve the aforementioned purpose, the semi-vacuum-connectable concave-convex matching structure of the present invention includes: a first coupling member having a groove, the groove has a groove wall surface and a groove bottom surface connected to each other, and the groove bottom surface is connected to the groove bottom surface. One end of the groove wall surface, the groove has a central axis, the central axis extends along an axial direction, the groove wall surface has a first axial length along the axial direction; a second coupling piece has a connecting one The main body and a protruding post, the protruding post is inserted into the groove, the protruding post has an outer wall surface and a top surface, the top surface is located at one end of the outer wall surface, and the outer wall surface is closely attached to the groove A wall surface, the top surface faces the bottom surface of the groove, there is a distance between the top surface and the bottom surface of the groove, the space between the top surface and the bottom surface of the groove is a negative pressure space, and the outer wall surface is along the axial direction having a second axial length slightly larger than the first axial length.

As can be seen from the foregoing, the present invention mainly forms the negative pressure space by making the distance between the top surface and the bottom surface of the groove to form the negative pressure space. Since the pressure in the negative pressure space is smaller than the external pressure, the user can resist the The force in the opposite direction exerted by a coupling piece and the second coupling piece further makes the coupling relationship between the first coupling piece and the second coupling piece more stable.

10: The first joint

10A: first end

11: Groove

112: groove wall

113: Bottom surface of groove

12: The first end face

20: Second binding piece

21: Main body

211: Second end face

22: convex column

221: outer wall

222: top surface

23: Adhesive layer

30: Negative pressure space

A: Center axis

D: distance

L1: The first axial length

L2: The second axial length

X: Axial

Y: extension line

FIG. 1 is a three-dimensional schematic diagram of the concave-convex matching structure capable of semi-vacuum connection according to the present invention.

FIG. 2 is a cross-sectional view of the first embodiment of the concave-convex matching structure capable of semi-vacuum connection according to the present invention.

3 is a cross-sectional view of the second embodiment of the concave-convex matching structure capable of semi-vacuum connection according to the present invention.

Please refer to FIGS. 1 and 2 for the first embodiment of the semi-vacuum-connectable concave-convex matching structure of the present invention, which includes: A first coupling piece 10 is made of elastically deformable material, the first coupling piece 10 has a groove 11 , in this embodiment, the groove 11 is a conical groove, and the groove 11 has an engaging groove 11 . A groove wall surface 112 and a groove bottom surface 113, the groove wall surface 112 is a conical surface, and the groove bottom surface 113 is connected to one end of the groove wall surface 112, the groove 11 has a central axis A, the central axis A along the Extending along an axis X, the extension line Y of the groove wall surface 112 forms an angle with the central axis A, and the angle is between 1 and 5 degrees, preferably 1 degree, and the groove wall surface 112 is along the axis. The direction X has a first axial length L1; preferably, the first joint 10 has a first end 10A, the groove 11 is recessed in the first end 10A, and the first end 10A has a first end 10A The end face 12; a second coupling member 20 having a connecting body portion 21 and a protruding post 22, the protruding post 22 being inserted into the groove 11, the protruding post 22 having an outer wall surface 221 and a top surface 222, the top surface 222 is located at one end of the outer wall surface 221, the outer wall surface 221 is tightly attached to the groove wall surface 112, the top surface 222 faces the groove bottom surface 113, when the protruding post 22 is completely inserted in When inside the groove 11, there is a distance D between the top surface 222 and the groove bottom surface 113. At this time, the space between the top surface 222 and the groove bottom surface 113 is defined as a negative pressure space 30. The outer wall surface 221 Along the axial direction X has a second axial length L2, the second axial length L2 is greater than the first axial length L1, in this embodiment, the second axial length L2 is slightly greater than the first axial length L2 Axial length L1; when the protruding post 22 of the second coupling member 20 is inserted into the groove 11 of the first coupling member 10, since the first coupling member 10 is made of elastically deformable material, the The groove 11 is slightly stretched by the protruding post 22 , so that the outer wall surface 221 is in close contact with the groove wall surface 112 .

Preferably, the body portion 21 of the second coupling member 20 has a second end surface 211 , the second end surface 211 is connected with the outer wall surface 221 , and the extension direction of the second end surface 211 is the extension of the outer wall surface 221 . The different extending directions make the second end surface 211 , the outer wall surface 221 , and the top surface 222 form a stepped shape together. The second end surface 211 abuts against the first end surface 12 .

In the second embodiment, please refer to FIG. 3 , which further includes: the second coupling member 20 further has an adhesive layer 23 , which is combined with and covers the outer wall surface 221 of the protruding post 22 to make the adhesive layer 23 tightly Attached to the groove wall 112 , the adhesive layer 23 is made of rubber or other materials with high friction coefficient, so that the bonding relationship between the first coupling element 10 and the second coupling element 20 can be achieved through the high friction property of the adhesive layer 23 . more stable.

Preferably, the adhesive layer 23 is further combined and covered on the top surface 222 of the protruding post 22 .

As can be seen from the foregoing, the present invention mainly forms the negative pressure space 30 by separating the top surface 222 and the groove bottom surface 112 by the distance D, and the pressure in the negative pressure space 30 is smaller than the external pressure, thereby enabling The opposite direction force exerted by the user on the first combining member 10 and the second combining member 20 is resisted, thereby making the combined relationship between the first combining member 10 and the second combining member 20 more stable.

In addition, in the present invention, the outer wall surface 221 is closely attached to the groove wall surface 112 to form an airtight measure, thereby ensuring that the negative pressure space 30 maintains a negative pressure state.

In addition, in the present invention, the second end face 211 can be pressed against the first end face 12 to form another airtight measure, which further ensures that the negative pressure is maintained in the negative pressure space 30 . When the end surface 211 is in close contact with the first end surface 12, the distance D between the top surface 222 and the groove bottom surface 113 is exactly the distance D, so that the positioning effect can be achieved through the second end surface 211 and the first end surface 12, avoiding the The top surface 222 and the bottom surface 113 of the groove adhere to each other.

10: The first joint

10A: first end

11: Groove

112: groove wall

113: Bottom surface of groove

12: The first end face

20: Second binding piece

21: Main body

211: Second end face

22: convex column

221: outer wall

222: top surface

30: Negative pressure space

A: Center axis

D: distance

L1: The first axial length

L2: The second axial length

X: Axial

Y: extension line

Claims (5)

A concave-convex fitting structure capable of semi-vacuum connection, comprising: a first joint piece made of elastically deformable material, the first joint piece has a groove, the groove has a groove wall surface and a groove bottom surface connected , and the groove bottom surface is connected to one end of the groove wall surface, the groove has a central axis, the central axis extends along an axial direction, and the groove wall surface has a first axial length along the axial direction; a first axial length; Two coupling pieces have a connecting body portion and a protruding post, the protruding post is inserted into the groove, the protruding post has an outer wall surface and a top surface, the top surface is located at one end of the outer wall surface, the protruding post is The outer wall surface is closely attached to the groove wall surface, the top surface faces the groove bottom surface, there is a distance between the top surface and the groove bottom surface, and the space between the top surface and the groove bottom surface is a negative pressure space, The outer wall surface has a second axial length along the axial direction, and the second axial length is slightly larger than the first axial length; the extension line of the groove wall surface and the central axis form an angle, and the angle is between at 1 to 5 degrees. The concave-convex fitting structure that can be connected in semi-vacuum according to the claim 1, wherein the groove is a conical groove, and the wall surface of the groove is a conical surface. The concave-convex fitting structure capable of semi-vacuum connection as described in claim 1, wherein the first coupling member has a first end, the groove is recessed on the first end, and the first end has a first end One end face, the body portion of the second joint has a second end face, the second end face is connected with the outer wall face, the extension direction of the second end face is different from the extension direction of the outer wall face, so that the second end face, the outer wall face The wall surface and the top surface together form a stepped shape, and the second end surface is abutted against the first end surface. The semi-vacuum-connectable concave-convex matching structure described in item 1 of the scope of the application, wherein the second coupling member further has an adhesive layer, which is combined with and covers the outer wall of the convex column, so that the adhesive layer is closely attached to the the groove wall. The semi-vacuum-connectable concave-convex matching structure described in claim 4, wherein the adhesive layer is further bonded and covered on the top surface of the protruding post.

Images