CN114810751A

CN114810751A - Multi-layer connection structure

Info

Publication number: CN114810751A
Application number: CN202110118682.6A
Authority: CN
Inventors: 梁寅; 娄光绪; 吴泽民; 卢战胜
Original assignee: Territory Health Innovation Medical Technology Chengdu Co Ltd
Current assignee: Territory Health Innovation Medical Technology Chengdu Co Ltd
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2022-07-29
Anticipated expiration: 2041-01-28
Also published as: TWI787801B; TW202229737A; CN114810751B

Abstract

A multilayer connection structure comprises a first shell, a second shell, a third shell, a first connecting piece and a second connecting piece. The first shell comprises a positioning part, a limiting part and a fixing part. The second shell comprises a positioning groove, a limiting groove, a first through hole and a first mounting hole, the limiting portion is embedded into the limiting groove, and the positioning portion is embedded into the positioning groove. The third casing includes the second mounting hole that corresponds with first through-hole and the fixed orifices that corresponds with first mounting hole, and the fixed part is used for passing first through-hole and stretching into the second mounting hole. The first connecting piece is used for extending into the fixing hole from the first mounting hole so as to enable the second shell to be connected with the third shell. The second connecting piece is used for extending into the second mounting hole and connecting with the fixing part so as to connect the three shells. The multilayer connection structure provided by the invention is simple in structure and convenient and quick to disassemble and assemble.

Description

Multi-layer connection structure

Technical Field

The present invention relates to a multilayer connection structure.

Background

The connection mode of realizing a plurality of parts has a lot of, but traditional connection mode adopts a large amount of screwed connection, or hot melt connection, or forms such as ultrasonic bonding, and the connection operation is inconvenient, and exposed screw still can influence the outward appearance of product.

Particularly, for the connection and fixation of multi-layer components which are complex in structure or need to be miniaturized, the traditional connection mode will undoubtedly increase the volume of the structure and the difficulty of assembly.

Disclosure of Invention

In view of the above, a need exists for a multi-layer connection structure, which can achieve quick assembly of multi-layer connection components and avoid using welding or excessive screws.

The invention provides a multilayer connecting structure which comprises a first shell, a second shell, a third shell, a first connecting piece and a second connecting piece. The first shell comprises a first surface and a second surface opposite to the first surface, and the first surface deviates from the second surface and is convexly provided with a positioning part, a limiting part and a fixing part. This second casing includes the third surface and the fourth surface that sets up relatively with this third surface, and this second casing is equipped with constant head tank, spacing groove, first through-hole and first mounting hole, and this third surface and this fourth surface setting are all run through to this first through-hole and this first mounting hole, and this spacing portion is used for stretching into this spacing inslot in order to carry on spacingly to this second casing, and this location portion is used for stretching into this constant head tank so that this second casing is fixed on this first casing. The third shell comprises a second mounting hole corresponding to the first through hole and a positioning hole corresponding to the first mounting hole, and the fixing part is used for penetrating through the first through hole and extending into the second mounting hole. The first connecting piece is used for extending into the positioning hole through the first mounting hole so as to connect the second shell with the third shell. The second connecting piece is used for extending into the second mounting hole and connecting with the fixing part so as to connect the second shell, the third shell and the first shell.

In the embodiment of the present application, the positioning portion includes a first positioning element, and the first positioning element includes a first connecting arm disposed on the first surface and a first positioning block disposed on one end of the first connecting arm away from the first surface. The positioning groove comprises a first positioning groove, the first positioning groove comprises a first opening and a first containing cavity communicated with the first opening, the first connecting arm is used for containing in the first opening, and the first positioning block is used for containing in the first containing cavity and clamped with the first positioning groove.

In an embodiment of the present application, a dimension of the first opening along a direction parallel to the third surface is greater than a dimension of the first positioning block along a direction parallel to the third surface.

In the embodiment of the present application, the positioning portion further includes a second positioning element, the second positioning element includes a second connecting arm disposed on the first surface, a second positioning block disposed on the second connecting arm and away from one end of the first surface, and a hook disposed on the second positioning block and away from one end of the second connecting arm, and the hook extends toward the first surface. The positioning groove further comprises a second positioning groove, the second positioning groove comprises a second opening, a second containing cavity communicated with the second opening and a convex block arranged on one side, close to the third surface, of the second containing cavity, the convex block extends towards the fourth surface, the second connecting arm is used for being contained in the second opening, the second positioning block is used for being contained in the second containing cavity, and the clamping hook is used for being clamped with the convex block.

In an embodiment of the present application, a dimension of the second opening along a direction parallel to the third surface is greater than a dimension of the second positioning block along a direction parallel to the third surface.

In the embodiment of the application, the hook is a piece.

In the embodiment of the application, the limiting part comprises two first limiting strips which are oppositely arranged and a second limiting strip which is connected with the two first limiting strips. The limiting groove is formed by two first side walls which are arranged oppositely and a second side wall which is connected with the two first side walls in a surrounding mode, the limiting portion is used for extending into the limiting groove, the first limiting strip abuts against the first side wall, and the second limiting strip abuts against the second side wall.

In the embodiment of the application, the two first side walls protrude towards one side of the limiting part to form a plurality of ribs, and the ribs are used for abutting against the two first limiting strips.

In an embodiment of the present application, the first sidewall includes an inclined plane connected to the third surface and a vertical plane connected to the inclined plane, the vertical plane is perpendicular to the third surface, and the inclined plane and the third surface form an obtuse angle.

In the embodiment of the application, the limiting part is an elastic part, and the elastic part is in interference fit with the limiting groove.

Compared with the prior art, the multi-layer connecting structure provided by the invention is a connecting structure of three layers of shells, a clamping connecting mode is adopted to be combined with a small amount of screws for connection, the multi-layer shells can be quickly assembled, the overall structure is simple, the quick assembly and disassembly are convenient, the traditional modes such as welding and the like are not needed, the using amount of the screws is greatly reduced, the exposed screws of a product are few, the appearance of the product is not influenced, the application range is wide, and the multi-layer connecting structure can be used for connecting and fixing the multi-layer shells under various scenes.

Drawings

Fig. 1 is a schematic structural diagram of a multilayer connection structure according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along line II-II of the multi-layer interconnect structure provided in FIG. 1.

Fig. 3 is a schematic structural diagram of a first housing according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of the first housing and the second housing according to an embodiment of the present invention after being connected.

Fig. 5 is a cross-sectional view along V-V of fig. 4, showing the first housing and the second housing connected.

Fig. 6 is a cross-sectional view along VI-VI of fig. 4, showing the first housing coupled to the second housing.

Fig. 7 is a schematic structural view of the limiting portion embedded in the limiting groove according to an embodiment of the present invention.

FIG. 8 is a cross-sectional view VIII-VIII of the multilayer interconnect structure provided in FIG. 1.

Fig. 9 is a schematic structural diagram of a first mounting hole according to an embodiment of the present invention.

Fig. 10 is a schematic structural view of a second mounting hole provided in an embodiment of the present invention.

Fig. 11 is a schematic structural diagram of a multilayer connection structure according to another embodiment of the present invention.

Description of the main elements

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

The system embodiments described below are merely illustrative, and the division of the modules or circuits is merely a logical division, and other divisions may be realized in practice. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. Several units or means recited in the system claims may also be implemented by one and the same unit or means in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4 and fig. 8, a multi-layer connecting structure 1000 according to an embodiment of the present invention is provided, the multi-layer connecting structure 1000 includes a first housing 1, a second housing 2, a third housing 3, a first connecting member 4 and a second connecting member 5. The first casing 1 includes a first surface 11 and a second surface 12 opposite to the first surface 11, and the first surface 11 is provided with a positioning portion 13, a limiting portion 14 and a fixing portion 15 which are protruded away from the second surface 12. The second casing 2 includes a third surface 21 and a fourth surface 22 opposite to the third surface 21, the third surface 21 is recessed toward the fourth surface 22 to form a positioning groove 23 and a limiting groove 24, and a first through hole 25 and a first mounting hole 26 are formed through the third surface 21 and the fourth surface 22. The third housing 3 includes a fifth surface 31 and a sixth surface 32 opposite to the fifth surface 31, the fifth surface 31 is recessed toward the sixth surface 32 to form a positioning hole 33, and a second mounting hole 34 is formed through the fifth surface 31 and the sixth surface 32. The limiting part 14 is used for being embedded into the limiting groove 24 to limit the second shell 2; the positioning portion 13 is used for being embedded into the positioning groove 23 so as to fix the second casing 2 on the first casing 1; the first mounting hole 26 corresponds to the positioning hole 33, and the first connecting element 4 is used for penetrating through the first mounting hole 26 and extending into the positioning hole 33 so as to connect the second casing 2 with the third casing 3; the fixing portion 15 is used to penetrate through the first through hole 25 and extend into the second mounting hole 34, and the second connecting member 5 is used to connect with the fixing portion 15 through the second mounting hole 34, so as to connect the first casing 1, the second casing 2 and the third casing 3.

Referring to fig. 3, the first housing 1 is substantially a sheet-shaped structure, and the positioning portion 13, the limiting portion 14 and the fixing portion 15 are integrally formed with the first surface 11.

In the present embodiment, the first casing 1, the second casing 2, and the third casing 3 may be plastic casings.

Referring to fig. 2 to 4, the positioning portion 13 includes a first positioning element 131 and a second positioning element 132. The positioning slot 23 includes a first slot 231 and a second slot 232, the first positioning element 131 is embedded in the first slot 231, and the second positioning element 132 is embedded in the second slot 232, so that the second housing 2 is initially fixed on the first housing 1.

Referring to fig. 4 and 5, in some embodiments, the first positioning element 131 includes a first connecting arm 1311 disposed on the first surface 11 and a first positioning block 1312 disposed at an end of the first connecting arm 1311 away from the first surface 11, and the first connecting arm 1311 and the first positioning block 1312 form an L-shaped structure. The first groove 231 includes a first opening 2311 and a first receiving cavity 2312 for receiving the first positioning block 1312, the first opening 2311 is communicated with the first receiving cavity 2312, the width of the first receiving cavity 2312 along the direction parallel to the third surface 21 is greater than that of the first opening 2311, and the first opening 2311 and the first receiving cavity 2312 form an L-shaped structure. The first positioning block 1312 is used for being clamped into the first accommodating cavity 2312 through the first opening 2311, and the first connecting arm 1311 is located in the first opening 2311, so that the first positioning element 131 is clamped with the first groove 231.

In this embodiment, a dimension of the first opening 2311 along a direction parallel to the third surface 21 is larger than a dimension of the first positioning block 1312, so that the first positioning block 1312 can extend into the first opening 2311 and be clamped into the first accommodating cavity 2312. Meanwhile, the length of the first connecting arm 1311 extending from the first surface 11 is equal to the depth of the first opening 2311, and after the first positioning element 131 is clamped in the first slot 231, the first surface 11 contacts with the third surface 21.

In the present embodiment, the first groove 231 is disposed through the third surface 21 and the fourth surface 22.

Referring to fig. 4 and fig. 6, the second positioning element 132 includes a second connecting arm 1321 disposed on the first surface 11, a second positioning block 1322 disposed on an end of the second connecting arm 1321 away from the first surface 11, and a hook 1323 disposed on an end of the second positioning block 1322 away from the second connecting arm 1321, the second connecting arm 1321 and the second positioning block 1322 are disposed in an L-shaped structure, and the hook 1323 extends toward the first surface 11. The second slot 232 includes a second opening 2321 and a second accommodating cavity 2322 communicating with the second opening 2321, a protruding block 2323 protruding toward the fourth surface 22 is disposed on one side of the second accommodating cavity 2322 close to the third surface 21, a width of the second accommodating cavity 2322 in a direction parallel to the third surface 21 is greater than a width of the second opening 2321, and the second opening 2321 and the second accommodating cavity 2322 form an L-shaped structure. The second positioning block 1322 is configured to be clamped into the second accommodating cavity 2322 through the second opening 2321, and the protrusion 2323 is configured to be clamped by the clamping hook 1323, so as to achieve the clamping of the second positioning element 132 and the second slot 232.

In this embodiment, the size of the second opening 2321 along the plane of the third surface 21 is larger than the size of the second positioning block 1322, so that the second positioning block 1322 can extend into the second opening 2321 and be clamped into the second accommodating cavity 2322. Meanwhile, the length of the second connecting arm 1321 extending from the first surface 11 is equal to the depth of the second opening 2321, and after the second positioning element 132 is snapped into the second slot 232, the first surface 11 contacts with the third surface 21.

In the present embodiment, the second groove 232 is disposed through the third surface 21 and the fourth surface 22.

In this embodiment, the hook 1323 is a resilient piece, when the second positioning element 132 is inserted into the second slot 232, the protrusion 2323 presses the resilient piece to deform the resilient piece so as to insert the second positioning block 1322 into the second accommodating cavity 2322, and after the resilient piece enters the second accommodating cavity 2322, the resilient piece recovers deformation to engage with the protrusion 2323, so as to position the second positioning element 132 in the second slot 232. By setting the hook 1323 to be a spring, the positioning operation is convenient, and the connection is stable.

Referring to fig. 3 and 7, the position-limiting portion 14 includes two first position-limiting strips 141 disposed oppositely and a second position-limiting strip 142 connected to the two first position-limiting strips 141. The limiting groove 24 is defined by two first side walls 241 opposite to each other and a second side wall 242 connecting the two first side walls 241, the limiting portion 14 is embedded in the limiting groove 24, the first limiting strip 141 abuts against the first side wall 241, and the second limiting strip 142 abuts against the second side wall 242.

In this embodiment, the first side walls 241 protrude toward one side of the position-limiting portion 14 to form a plurality of ribs 243, and the ribs 243 are used for reinforcing the extrusion of the first position-limiting strips 141, so that the position-limiting portion 14 is fastened in the position-limiting groove 24.

In this embodiment, referring to fig. 2, the rib 243 is arc-shaped along a cross section parallel to the third surface 21, and the arc-shaped rib 243 enables the limiting portion 14 to be more smoothly inserted into the limiting groove 24.

In this embodiment, the first sidewall 241 includes an inclined surface 2411 and a vertical surface 2412, the vertical surface 2412 is disposed perpendicular to the third surface 21, and the inclined surface 2411 and the third surface 21 form an obtuse angle, so that the opening size of the position-limiting groove 24 is larger than the size of the position-limiting portion 14, and the position-limiting portion 14 is conveniently inserted into the position-limiting groove 24.

Referring to fig. 9, referring to fig. 2 and fig. 8 in combination, the first mounting hole 26 on the second casing 2 includes a first hole wall 261, a second hole wall 262 and a first step portion 263 disposed between the first hole wall 261 and the second hole wall 262, the first hole wall 261 surrounds to form a second through hole 264, the second hole wall 262 surrounds to form a third through hole 265, the second through hole 264 is coaxial with the third through hole 265, the aperture of the second through hole 264 is larger than that of the third through hole 265, and the aperture of the positioning hole 33 on the third casing 3 is smaller than or equal to that of the third through hole 265. The first connecting element 4 includes a first connecting rod 41 and a first connecting head 42, the size of the first connecting head 42 along the direction parallel to the third surface 21 is larger than the size of the first connecting rod 41, the first connecting rod 41 extends into the positioning hole 33 through the second through hole 264 and the third through hole 265, the first connecting head 42 abuts against the surface of the first step portion 263 close to the second through hole 264, so as to connect the second casing 2 and the third casing 3.

In this embodiment, the hole wall of the positioning hole 33 is provided with an internal thread, the first connecting element 4 is a screw with a cap, the surface of the first connecting rod 41 is provided with an external thread engaged with the internal thread, and the first connecting element 4 is screwed into the positioning hole 33 to connect the second casing 2 and the third casing 3.

In the present embodiment, the number of the first mounting holes 26 is two, and the number of the positioning holes 33 and the number of the first connectors 4 corresponding thereto are also two. The second housing 2 and the third housing 3 can be initially connected and fixed by two first connecting pieces 4.

Referring to fig. 10, referring to fig. 2 and fig. 8 in combination, the second mounting hole 34 on the third casing 3 includes a third hole wall 341, a fourth hole wall 342, and a second step 343 disposed between the third hole wall 341 and the fourth hole wall 342, the third hole wall 341 surrounds and forms a fourth through hole 344, the fourth hole wall 342 surrounds and forms a fifth through hole 345, the fourth through hole 344 is coaxial and communicated with the fifth through hole 345, and the diameter of the fourth through hole 344 is greater than that of the fifth through hole 345. The aperture of the first through hole 25 of the second housing 2 is smaller than or equal to the aperture of the fifth through hole 345. The fixing portion 15 of the first casing 1 is configured to extend into the fifth through hole 345 through the first through hole 25, the fixing portion 15 includes a column 151 and a hole 152 defined by the column 151, the hole 152 extends along a direction perpendicular to the first surface 11, and an opening direction of the hole is toward the second casing 2. The second connector 5 includes a second connecting rod 51 and a second connector 52, the size of the second connector 52 along the direction parallel to the third surface 21 is larger than the size of the second connecting rod 51, the second connecting rod 51 extends into the hole 152 of the fixing portion 15 through the fourth through hole 344 and the fifth through hole 345, the second connector 52 abuts against the surface of the second step portion 343 near the fourth through hole 344, so as to connect the first casing 1, the second casing 2 and the third casing 3.

In this embodiment, the inner sidewall of the cylinder 151 is provided with an internal thread, the surface of the second connecting rod 51 is provided with an external thread engaged with the internal thread, and the second connecting member 5 is screwed into the fixing portion 15 to connect the first casing 1, the second casing 2 and the third casing 3.

In the present embodiment, the number of the second mounting holes 34 is two, and the number of the corresponding first through holes 25, fixing portions 15, and second connectors 5 is two. First casing 1, second casing 2 and third casing 3 are further connected fixedly through two second connecting pieces 5, realize the connection of many casings, avoid using too much screw or welding to connect, can also avoid too much screw to expose simultaneously and influence product appearance.

Referring to fig. 1 to fig. 8, the assembly method of the multilayer connection structure 1000 provided by the present invention is as follows:

first, the second housing 2 and the third housing 3 are connected and fixed by the first connector 4.

Then, the first positioning element 131, the second positioning element 132 and the limiting portion 14 on the first housing 1 are clamped into the corresponding first groove 231, the second groove 232 and the limiting groove 24 of the second housing 2, and the fixing portion 15 on the first housing 1 extends into the second mounting hole 34 through the first through hole 25 of the second housing 2, so as to achieve the primary fixing.

Next, the second connector 5 is screwed into the hole 152 of the fixing portion 15 through the second mounting hole 34, and finally the first casing 1, the second casing 2, and the third casing 3 are connected and fixed.

This method multilayer connection structure 1000 connects fixedly simply, swiftly, need not traditional modes such as welding, screwed connection, and the quantity of very big degree reduction screw can not influence the product appearance moreover.

Referring to fig. 11, a multi-layer connection structure 200 according to a second embodiment of the present invention is further provided, and the multi-layer connection structure 200 is mainly different from the multi-layer connection structure 1000 according to the first embodiment in that the position-limiting portion 16 is an elastic member, the width of the elastic member is slightly larger than the width of the position-limiting groove 24, and the position-limiting portion 16 and the position-limiting groove 24 are fixed to each other by interference fit, so as to limit the position of the second housing 2. It should be noted that, within the scope of the spirit or the basic features of the present invention, each specific solution applicable to the first embodiment may also be correspondingly applicable to the second embodiment, and for the sake of brevity and avoidance of repetition, the detailed description thereof is omitted here. In this embodiment, the limiting part 16 and the limiting groove 24 are fixed to each other by interference fit, so that the second housing 2 is limited, the assembly is facilitated, and the stability of the second housing 2 can be enhanced.

Claims

1. A multilayer connection structure, comprising:

the first shell comprises a first surface and a second surface opposite to the first surface, and the first surface is provided with a positioning part, a limiting part and a fixing part in a protruding way and deviates from the second surface;

the second shell comprises a third surface and a fourth surface opposite to the third surface, the second shell is provided with a positioning groove, a limiting groove, a first through hole and a first mounting hole, the first through hole and the first mounting hole penetrate through the third surface and the fourth surface, the limiting part is used for extending into the limiting groove to limit the second shell, and the positioning part is used for extending into the positioning groove to fix the second shell on the first shell;

the third shell comprises a second mounting hole corresponding to the first through hole and a positioning hole corresponding to the first mounting hole, and the fixing part is used for penetrating through the first through hole and extending into the second mounting hole;

the first connecting piece is used for extending into the positioning hole through the first mounting hole so as to connect the second shell with the third shell; and

and the second connecting piece is used for extending into the second mounting hole and connecting with the fixing part so as to connect the second shell, the third shell and the first shell.

2. The multilayer connection structure according to claim 1, wherein the positioning part comprises a first positioning member, and the first positioning member comprises a first connection arm provided on the first surface and a first positioning block provided on an end of the first connection arm away from the first surface;

the positioning groove comprises a first positioning groove, the first positioning groove comprises a first opening and a first containing cavity communicated with the first opening, the first connecting arm is used for containing in the first opening, and the first positioning block is used for containing in the first containing cavity and clamped with the first positioning groove.

3. The multilayer connection structure of claim 2, wherein a dimension of the first opening in a direction parallel to the third surface is greater than a dimension of the first positioning block in a direction parallel to the third surface.

4. The multi-layer connecting structure according to claim 2, wherein the positioning portion further comprises a second positioning element, the second positioning element comprises a second connecting arm disposed on the first surface, a second positioning block disposed on an end of the second connecting arm away from the first surface, and a hook disposed on an end of the second positioning block away from the second connecting arm, the hook extends toward the first surface;

the positioning groove further comprises a second positioning groove, the second positioning groove comprises a second opening, a second containing cavity communicated with the second opening and a convex block arranged on one side, close to the third surface, of the second containing cavity, the convex block extends towards the fourth surface, the second connecting arm is used for being contained in the second opening, the second positioning block is used for being contained in the second containing cavity, and the clamping hook is used for being clamped with the convex block.

5. The multilayer connection structure of claim 4, wherein the second opening has a dimension in a direction parallel to the third surface that is greater than a dimension of the second locating block in the direction parallel to the third surface.

6. The multi-layer connection structure of claim 4, wherein the hook is a spring.

7. The multilayer connection structure according to claim 1, wherein the stopper portion includes two first stopper strips disposed opposite to each other and a second stopper strip connecting the two first stopper strips;

the limiting groove is formed by two first side walls which are arranged oppositely and a second side wall which is connected with the two first side walls in a surrounding mode, the limiting portion is used for extending into the limiting groove, the first limiting strip abuts against the first side walls, and the second limiting strip abuts against the second side walls.

8. The multilayer connection structure of claim 7, wherein the first side walls protrude toward one side of the limiting portion to form a plurality of ribs, and the ribs are used for abutting against the first limiting bars.

9. The multilayer connection structure of claim 7, wherein the first sidewall comprises an inclined surface connected to the third surface and a vertical surface connected to the inclined surface, the vertical surface being perpendicular to the third surface, the inclined surface forming an obtuse angle with the third surface.

10. The multilayer connection structure according to claim 1, wherein the stopper portion is an elastic member, and the elastic member is in interference fit with the stopper groove.