CN108377622B

CN108377622B - Buckle type shell

Info

Publication number: CN108377622B
Application number: CN201810332948.5A
Authority: CN
Inventors: 杨熙; 陈晓明
Original assignee: CIG Shanghai Co Ltd
Current assignee: CIG Shanghai Co Ltd
Priority date: 2018-04-13
Filing date: 2018-04-13
Publication date: 2023-10-31
Anticipated expiration: 2038-04-13
Also published as: CN108377622A

Abstract

The invention discloses a buckle type shell, which comprises: the upper shell, the lower shell and the first buckle. The upper housing is fixed to the lower housing. The first buckle comprises an upper buckle plate and a lower buckle plate, the upper buckle plate is fixed on the lower shell, the lower buckle plate is fixed on the upper shell, a gap is reserved between the upper buckle plate and the lower buckle plate, and when the upper shell and the lower shell are far away from each other, the upper buckle plate is in butt joint with the lower buckle plate. When the original fixed connection structure is invalid due to the fact that the upper shell and the lower shell are subjected to external force, the upper shell is far away from the lower shell, at the moment, the upper buckle plate is in butt joint with the lower buckle plate, the upper shell and the lower shell are prevented from being separated from each other, and the product is guaranteed to accord with UL certification.

Description

Buckle type shell

Technical Field

The invention relates to a buckle type shell.

Background

When the general product designs the shell structure, the connecting structures such as buckles, screws and the like are often adopted, so that the requirement of the shell for convenient assembly is met. When the shell is impacted by external force, the connecting structure of the shell is easy to fail, so that the shell is opened, and the product cannot meet the safety standard. For example, according to the requirements of UL 60950-1 safety test, after the shell of the product is opened, a round rod with the diameter of 12mm is used for plugging inwards at the opening with a force of 30N, and if the round rod touches a device on the finished circuit board in the shell, the product does not meet UL certification.

Disclosure of Invention

The invention aims to overcome the defect that in the prior art, a shell is opened under the impact of external force, so that a product does not accord with the safety standard, and provides a buckle type shell which still accords with the safety standard under the action of external force.

The invention solves the technical problems by the following technical scheme:

a snap-in housing, comprising:

an upper housing;

a lower housing, the upper housing being fixed to the lower housing;

the first buckle, first buckle includes buckle and lower buckle, go up the buckle and be fixed in down the casing, down the buckle be fixed in go up the casing, go up the buckle with have the clearance between the buckle down, go up the casing with when the casing is kept away from down, go up the buckle with down the buckle looks butt.

Preferably, the buckle type shell further comprises a second buckle, and the upper shell and the lower shell are fixedly connected through the second buckle.

In this scheme, buckle structure is comparatively simple, and the casing equipment is more convenient.

Preferably, in a direction in which the upper case is away from the lower case, a distance between the upper buckle plate and the lower buckle plate is not more than 3mm.

In the scheme, the interval range can avoid failure of security authentication.

Preferably, in a direction in which the upper casing is away from the lower casing, a distance between the upper buckle plate and the lower buckle plate is 3mm.

Preferably, an upper step is arranged at the edge of the upper shell facing the lower shell, a lower step is arranged at the edge of the lower shell facing the upper shell, and the upper step is matched with the lower step.

In the scheme, the upper and lower stages are utilized to facilitate the alignment and assembly of the upper and lower shells.

Preferably, an annular groove is formed in the outer wall of the lower stage, the buckle type shell further comprises a sealing ring, the sealing ring is located in the annular groove, and the upper stage and the lower stage form sealing through the sealing ring.

In the scheme, the annular groove is matched with the sealing ring, so that the joint of the upper shell and the lower shell is in a sealing state.

Preferably, the edge of the lower buckle plate far away from the upper buckle plate is provided with a chamfer surface, and the chamfer surface faces to the inner wall of the lower shell for fixing the upper buckle plate.

In this scheme, chamfer face can be convenient for down the buckle break through the hindrance of last buckle, removes to the below of last buckle.

Preferably, the buckle type shell further comprises an upper metal plate, and the upper metal plate is fixed at the connection position of the upper buckle plate and the lower shell.

In this scheme, go up the sheet metal and can strengthen the joint strength of buckle and lower casing.

Preferably, the buckle type shell further comprises a lower metal plate, and the lower metal plate is fixed at the connection position of the lower buckle plate and the upper shell.

In this scheme, lower panel beating can strengthen the joint strength of buckle and last casing down.

Preferably, the lower shell is provided with a guide groove, the upper shell is fixedly provided with a guide piece, and the guide piece is matched with the guide groove.

In this scheme, the guide can guarantee to go up accurate location between the lower casing with the guide way.

On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the invention.

The invention has the positive progress effects that: when the original fixed connection structure is invalid due to the fact that the upper shell and the lower shell are subjected to external force, the upper shell is far away from the lower shell, at the moment, the upper buckle plate is in butt joint with the lower buckle plate, the upper shell and the lower shell are prevented from being separated from each other, and the product is guaranteed to accord with UL certification.

Drawings

Fig. 1 is a perspective view showing a snap-in type housing according to a preferred embodiment of the present invention.

Fig. 2 is a perspective view of a lower case in a preferred embodiment of the present invention.

Fig. 3 is a perspective view of the upper housing in the preferred embodiment of the present invention.

Fig. 4 is a top view of the snap-in housing in a preferred embodiment of the invention.

Fig. 5 is a cross-sectional view of A-A in fig. 4.

Fig. 6 is an enlarged view of a portion B in fig. 5.

Reference numerals illustrate:

upper casing 1

Upper stage 11

Guide 12

Lower housing 2

Lower stage 21

Annular groove 211

Guide groove 22

Upper buckle plate 3

Lower buckle 4

Chamfer surface 41

Second upper pinch plate 51

Second lower pinch plate 52

Sealing ring 6

Upper sheet metal 7

Lower sheet metal 8

Detailed Description

The invention is further illustrated by means of examples which follow, without thereby restricting the scope of the invention thereto.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Fig. 1-3 illustrate a snap-in housing comprising: an upper housing 1, a lower housing 2 and a first buckle. The upper case 1 is fixed to the lower case 2. The first buckle includes buckle 3 and lower buckle 4, goes up buckle 3 and is fixed in lower casing 2, and lower buckle 4 is fixed in last casing 1, has the clearance between buckle 3 and the lower buckle 4, and when last casing 1 kept away from mutually with lower casing 2, go up buckle 3 and lower buckle 4 looks butt.

When the original fixed connection structure between the upper shell 1 and the lower shell 2 fails due to the action of external force, the upper shell 1 is far away from the lower shell 2. When the distance between the upper shell 1 and the lower shell 2 is equal to the gap between the upper buckle plate 3 and the lower buckle plate 4, the upper buckle plate 3 is abutted against the lower buckle plate 4, and the upper shell 1 and the lower shell 2 cannot be continuously far away. That is, after the original fixed connection structure fails, the gap between the upper shell 1 and the lower shell 2 is smaller than the gap between the upper pinch plate 3 and the lower pinch plate 4, so that the product can be ensured to conform to UL certification.

In the present embodiment, in order to simplify the assembly process of the upper case 1 and the lower case 2, the assembly efficiency is improved. The buckle type shell further comprises a second buckle, and the upper shell 1 is fixedly connected with the lower shell 2 through the second buckle. The second buckle comprises a second upper buckle plate 51 and a second lower buckle plate 52, and the second upper buckle plate 51 and the second lower buckle plate 52 are tightly matched.

According to the UL 60950-1 safety test requirement, in order to ensure that the product meets the safety regulation requirement in the test, the clearance between the upper shell 1 and the lower shell 2 meets the aesthetic requirement. In the direction of the upper shell 1 and the lower shell 2, the distance between the upper pinch plate 3 and the lower pinch plate 4 is not more than 3mm. In this embodiment, the distance between the upper gusset 3 and the lower gusset 4 is set to 3mm.

As will be understood from fig. 4 to fig. 6, when the upper housing 1 and the lower housing 2 are assembled in alignment, in order to reduce alignment time and improve assembly efficiency, an upper step 11 is disposed at the edge of the upper housing 1 facing the lower housing 2, and a lower step 21 is disposed at the edge of the lower housing 2 facing the upper housing 1, where the upper step 11 is matched with the lower step 21. The upper and lower stages 11 and 21 can be constructed to ensure accurate assembly between the upper and lower cases 1 and 2.

In order to meet the waterproof requirement of the product, the upper shell 1 and the lower shell 2 are guaranteed to be in a sealing state, an annular groove 211 is formed in the outer wall of the lower stage 21, the buckle type shell further comprises a sealing ring 6, the sealing ring 6 is located in the annular groove 211, and the upper stage 11 and the lower stage 21 form sealing through the sealing ring 6.

In other alternative embodiments, when the lower stage is located outside the upper stage, an annular groove may be formed on the outer wall of the upper stage, and a seal ring may be disposed in the annular groove of the upper stage, so as to ensure that the upper stage and the lower stage are in a sealed state.

As shown in fig. 6, the edge of the lower buckle plate 4 away from the upper buckle plate 3 is provided with a chamfer surface 41, and the chamfer surface 41 faces the inner wall of the lower shell 2 for fixing the upper buckle plate 3. Before the upper shell 1 and the lower shell 2 are assembled, the lower buckle plate 4 is positioned above the upper buckle plate 3, and the upper buckle plate 3 prevents the lower buckle plate 4 from moving downwards; when the upper shell 1 and the lower shell 2 are assembled, the chamfer surface 41 is a contact surface between the upper buckle plate 3 and the lower buckle plate 4, and the upper buckle plate 3 and the lower buckle plate 4 relatively move along the chamfer surface 41 at the moment, so that the lower buckle plate 4 breaks through the obstruction of the upper buckle plate 3 and moves below the upper buckle plate 3.

For improving the joint strength of last buckle 3 and lower casing 2, the joint strength of lower buckle 4 and last casing 1, buckle formula casing still includes panel beating 7 and lower panel beating 8, goes up panel beating 7 and is fixed in the hookup location department of last buckle 3 and lower casing 2, and lower panel beating 8 is fixed in the hookup location department of lower buckle 4 and last casing 1.

In this embodiment, the lower housing 2 is provided with a guide groove 22, and the upper housing 1 is fixed with a guide member 12, and the guide member 12 is matched with the guide groove 22. The guide member 12 and the guide groove 22 can further ensure accurate positioning between the upper housing 1 and the lower housing 2.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.

Claims

1. A snap-in housing, comprising:

an upper housing;

a lower housing, the upper housing being fixed to the lower housing;

the first buckle comprises an upper buckle plate and a lower buckle plate, wherein the upper buckle plate is fixed on the lower shell, the lower buckle plate is fixed on the upper shell, a gap is reserved between the upper buckle plate and the lower buckle plate, the distance between the upper buckle plate and the lower buckle plate is not more than 3mm in the direction that the upper shell is far away from the lower shell, and when the upper shell is far away from the lower shell, the upper buckle plate is in butt joint with the lower buckle plate;

the upper shell is fixedly connected with the lower shell through the second buckle.

2. The snap-in housing of claim 1, wherein an upper step is provided in the upper housing at a rim facing the lower housing, and a lower step is provided in the lower housing at a rim facing the upper housing, the upper step being matched with the lower step.

3. The snap-in housing of claim 2, wherein the outer wall of the lower stage is provided with an annular groove, the snap-in housing further comprising a seal ring positioned within the annular groove, the upper stage and the lower stage being sealed by the seal ring.

4. The snap-in housing of claim 1, wherein a chamfer is provided in the lower gusset at a side line remote from the upper gusset, the chamfer facing toward an inner wall of the lower housing where the upper gusset is secured.

5. The snap-in housing of claim 1, further comprising an upper sheet metal secured to the upper pinch plate at a location of connection with the lower housing.

6. The snap-in housing of claim 1, further comprising a lower sheet metal secured to the lower gusset at a location of connection with the upper housing.

7. The snap-in housing of claim 1, wherein the lower housing has a guide slot therein, and wherein the upper housing has a guide secured thereto, the guide matching the guide slot.