Buckling device of plastic shell

Abstract

The utility model relates to the technical field of buckling devices, in particular to a buckling device of a plastic shell, which comprises an upper plastic shell, a lower plastic shell, a side end pressing assembly, a guide insertion assembly, an elastic positioning assembly and an anti-falling fixing assembly, the lower end of the upper plastic shell is connected with a lower plastic shell in a clamped mode, side end pressing assemblies are installed at the two ends of the outer side of the upper plastic shell and the two ends of the outer side of the lower plastic shell correspondingly, and guiding insertion assemblies are installed at the four corners of the inner side of the upper plastic shell and the four corners of the inner side of the lower plastic shell correspondingly. The side end pressing assembly comprises an upper pressing plate, a first mounting hole, a pressing inner clamping plate, a lower pressing plate, a pressing clamping groove and a second mounting hole; the side end pressing assembly enables the upper plastic shell and the lower plastic shell to be preliminarily positioned and pressed, the guide insertion assembly can ensure that the upper plastic shell and the lower plastic shell can be accurately buckled, and meanwhile the elastic positioning assembly and the anti-falling fixing assembly can enhance the buckling strength.

Description

Technical Field

[0001] The utility model relates to the technical field of buckling devices, in particular to a buckling device for a plastic shell. Background Art

[0002] The snap-fit ​​device used in plastic housings is a structure used to connect and fix the various components of the plastic housing. Usually, snaps are provided on the edge or specific position of the plastic housing. The snaps can be designed in a variety of ways, including cantilever snaps, ring snaps, ball snaps, etc.

[0003] The buckle devices currently used on plastic housings have a relatively simple structure, and most of them are only provided with a single buckle. When subjected to external force, the upper and lower plastic housings are easily loosened, which greatly reduces the stability of the buckle devices.

[0004] Therefore, to address the problem that the buckling device currently used on the plastic housing only has a single buckle, resulting in insufficient stability between the upper and lower plastic housings, a highly efficient and stable buckling device for the plastic housing can be designed. Utility Model Content

[0005] In order to overcome the problem that the conventional buckle device used on the plastic housing has only a single buckle, the upper and lower plastic housings are easily loosened when subjected to external force.

[0006] The technical solution of the present invention is as follows: a snap-fit ​​device for a plastic shell comprises an upper plastic shell, a lower plastic shell, a side pressing assembly, a guide insert assembly, an elastic positioning assembly and an anti-falling fixing assembly; the lower end of the upper plastic shell is snap-fitted and connected to the lower plastic shell, the outer ends of the upper and lower plastic shells are both equipped with side pressing assemblies, the four corners of the inner sides of the upper and lower plastic shells are both equipped with guide insert assemblies, the connecting surfaces on both sides of the upper and lower plastic shells are equipped with elastic positioning assemblies, and the upper plastic Anti-fall fixing components are installed on the other two side connecting surfaces of the shell and the lower plastic shell, and the side end pressing components include an upper pressing plate, a first mounting hole, a clamping inner clamping plate, a lower pressing plate, a pressing slot and a second mounting hole; both ends of the outer side of the upper plastic shell are fixedly connected to the upper pressing plate, the first mounting hole is opened inside the upper pressing plate, the lower end of the upper pressing plate is fixedly connected to the clamping inner clamping plate, the lower end of the upper pressing plate is clamped and connected to the lower pressing plate, the upper end surface of the lower pressing plate is opened with a pressing slot, and the lower pressing plate is opened inside the second mounting hole.

[0007] Preferably, the side pressing component is used to enable the upper plastic shell and the lower plastic shell to be initially positioned and pressed together, and the guide insertion component is used to ensure that the upper plastic shell and the lower plastic shell can be accurately snapped together. At the same time, the elastic positioning component and the anti-fall-off fixing component can be used to strengthen the snapping force, further improving the stability of the snapping between the upper plastic shell and the lower plastic shell.

[0008] Preferably, the guide insertion assembly includes a reinforced connecting block, a guide sleeve, an insertion groove, a connecting strip, a fixed pressure ring and a guide insertion rod; the reinforced connecting block is fixedly connected to the inner wall of the lower plastic shell, and the guide sleeve is fixedly connected to the outside of the reinforced connecting block. The reinforced connecting block can ensure the stability of the guide sleeve in use.

[0009] Preferably, an insertion groove is provided inside the guide sleeve, a connecting strip is fixedly connected to the inner wall of the upper plastic shell, a fixed pressure ring is fixedly connected to the side end of the connecting strip, and a guide insertion rod is fixedly connected to the lower end of the fixed pressure ring. The guide insertion rod can be inserted into the insertion groove so that the plastic shell and the lower plastic shell can be precisely buckled.

[0010] Preferably, the elastic positioning assembly includes a positioning card plate, a buffer adjustment groove, a return spring, a limit slide, an anti-sway block and a positioning card groove; the upper end surface of the lower plastic shell is fixedly connected to the positioning card plate, and a buffer adjustment groove is provided inside the positioning card plate. The number of positioning card plates can be adjusted and set accordingly according to design requirements.

[0011] Preferably, a return spring is installed inside the buffer adjustment groove, a limiting slide is installed on the side end of the return spring, and an anti-sway block is installed on the side end of the limiting slide. The shape of the anti-sway block can also be adjusted accordingly according to usage requirements.

[0012] Preferably, a positioning card groove that is compatible with the positioning card plate is provided on the lower end surface of the upper plastic shell, and a card hole that is engaged with the anti-sway card block is provided on the inner wall of the positioning card groove. The positioning card plate can be inserted into the positioning card groove, and the anti-sway card block can play a role in cooperating with the clamping and fixing effect.

[0013] Preferably, the anti-fall fixing assembly includes an anti-fall strip, a side elastic locking block, an anti-fall groove and a locking groove; anti-fall strips are fixedly connected to both sides of the lower end of the upper plastic shell, and side elastic locking blocks are installed on both sides of the anti-fall strip. Anti-fall grooves are provided on both sides of the upper end surface of the lower plastic shell, and locking grooves are provided at both ends of the inner side of the anti-fall groove. The anti-fall strip can be stuck into the anti-fall groove, and the side elastic locking blocks can be stuck into the locking groove, further strengthening the buckling force.

[0014] Beneficial effects of the utility model:

[0015] 1. The side pressing component is used to enable the upper plastic shell and the lower plastic shell to be initially positioned and pressed together, and the guide insertion component is used to ensure that the upper plastic shell and the lower plastic shell can be accurately buckled. At the same time, the elastic positioning component and the anti-fall-off fixing component can strengthen the buckling force. Compared with the traditional buckling device used on the plastic shell, which only has a single buckle, the buckling device of the plastic shell can easily loosen when subjected to external force. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the fastening device of the plastic housing of the present invention;

[0017] Figure 2 Shown is a schematic diagram of the three-dimensional structure of the guide insertion component in the snap-fit ​​device of the plastic housing of the present invention;

[0018] Figure 3 Shown is a schematic diagram of the three-dimensional structure of the lower plastic shell in the snap-fit ​​device of the plastic shell of the present invention;

[0019] Figure 4 Shown is a schematic diagram of the three-dimensional structure of the upper plastic shell in the snap-fit ​​device of the plastic shell of the present invention.

[0020] Explanation of the accompanying drawings: 1. Upper plastic shell; 2. Lower plastic shell; 301. Upper pressing plate; 302. First mounting hole; 303. Pressing inner clamping plate; 304. Lower pressing plate; 305. Pressing slot; 306. Second mounting hole; 401. Reinforced connecting block; 402. Guide sleeve; 403. Insertion slot; 404. Connecting strip; 405. Fixed pressure ring; 406. Guide insertion rod; 501. Positioning snap-in plate; 502. Buffering adjustment groove; 503. Return spring; 504. Limiting slide plate; 505. Anti-sway block; 506. Positioning snap-in groove; 601. Anti-falling strip; 602. Side elastic locking block; 603. Anti-falling groove; 604. Locking groove. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] See also Figures 1-4The utility model provides an embodiment: a snap-fit ​​device of a plastic shell, comprising an upper plastic shell 1, a lower plastic shell 2, a side pressing assembly, a guide insertion assembly, an elastic positioning assembly and an anti-falling fixing assembly; the lower end of the upper plastic shell 1 is snap-connected with the lower plastic shell 2, and the outer ends of the upper plastic shell 1 and the lower plastic shell 2 are both installed with side pressing assemblies, and the four corners of the inner sides of the upper plastic shell 1 and the lower plastic shell 2 are both installed with guide insertion assemblies. Elastic positioning assemblies are installed on the connecting surfaces on both sides of the upper plastic shell 1 and the lower plastic shell 2, and anti-falling fixing assemblies are installed on the other two connecting surfaces of the upper plastic shell 1 and the lower plastic shell 2. The side pressing assembly comprises an upper pressing plate 301, a first mounting hole 302, a tightening inner card plate 303, a lower pressing plate 304, a pressing slot 305 and a second Mounting hole 306; both ends of the outer side of the upper plastic shell 1 are fixedly connected with an upper pressing plate 301, a first mounting hole 302 is provided inside the upper pressing plate 301, the lower end of the upper pressing plate 301 is fixedly connected with a clamping inner clamping plate 303, the lower end of the upper pressing plate 301 is clamped and connected with a lower pressing plate 304, a pressing slot 305 is provided on the upper end surface of the lower pressing plate 304, and a second mounting hole 306 is provided inside the lower pressing plate 304. The side pressing component is used to enable the upper plastic shell 1 and the lower plastic shell 2 to be initially positioned and pressed together, and the use of the guide insertion component can ensure that the upper plastic shell 1 and the lower plastic shell 2 can be accurately buckled together. At the same time, the elastic positioning component and the anti-fall-off fixing component can be used to strengthen the buckling force, further improving the stability of the buckling between the upper plastic shell 1 and the lower plastic shell 2.

[0023] See also Figure 2 In this embodiment, the guide insertion assembly includes a reinforcement connection block 401, a guide sleeve 402, an insertion groove 403, a connection strip 404, a fixed pressure ring 405 and a guide insertion rod 406; the reinforcement connection block 401 is fixedly connected to the inner wall of the lower plastic shell 2, and the guide sleeve 402 is fixedly connected to the outside of the reinforcement connection block 401. The reinforcement connection block 401 can ensure the stability of the guide sleeve 402 during use. An insertion groove 403 is provided inside the guide sleeve 402, and a connection strip 404 is fixedly connected to the inner wall of the upper plastic shell 1. The side end of the connection strip 404 is fixedly connected to the fixed pressure ring 405, and the lower end of the fixed pressure ring 405 is fixedly connected to the guide insertion rod 406. The guide insertion rod 406 can be inserted into the insertion groove 403, so that the plastic shell 1 and the lower plastic shell 2 can be accurately buckled.

[0024] See also Figure 3-Figure 4, in this embodiment, the elastic positioning assembly includes a positioning card plate 501, a buffer adjustment groove 502, a return spring 503, a limiting slide plate 504, an anti-sway block 505 and a positioning card groove 506; the upper end surface of the lower plastic shell 2 is fixedly connected to the positioning card plate 501, and a buffer adjustment groove 502 is provided inside the positioning card plate 501. The number of positioning card plates 501 can be adjusted accordingly according to design needs. A return spring 503 is installed inside the buffer adjustment groove 502, and a limiting slide plate 504 is installed on the side end of the return spring 503. An anti-sway block 505 is installed on the side end of the limiting slide plate 504. The shape of the anti-sway block 505 can also be adjusted accordingly according to use needs. The lower end surface of the upper plastic shell 1 is provided with a positioning card groove 506 that is compatible with the positioning card plate 501. The inner wall of the positioning card groove 506 is provided with a card hole that is engaged with the anti-sway card block 505, and the positioning card plate 501 can be inserted into the positioning card groove 506, and the anti-sway card block 505 can play a role in cooperating with the card fixing. The anti-falling fixing component includes an anti-falling pressure strip 601, a side elastic locking block 602, an anti-falling groove 603 and a locking groove 604; both sides of the lower end of the upper plastic shell 1 are fixedly connected to the anti-falling pressure strip 601, and side elastic locking blocks 602 are installed on both sides of the anti-falling pressure strip 601. Anti-falling grooves 603 are provided on both sides of the upper end surface of the lower plastic shell 2, and locking grooves 604 are provided at both ends of the inner side of the anti-falling groove 603. The anti-falling pressure strip 601 can be inserted into the anti-falling groove 603, and the side elastic locking blocks 602 can be inserted into the locking groove 604, further strengthening the buckling force.

[0025] During operation, the reinforced connecting block 401 can ensure the stability of the guide sleeve 402 , and the guide insertion rod 406 can be inserted into the insertion groove 403 , so that the upper plastic shell 1 and the lower plastic shell 2 can be accurately fastened together;

[0026] The positioning card plate 501 can be inserted into the positioning card groove 506, and the return spring 503 is used to make the limiting slide plate 504 drive the anti-sway block 505 to move elastically, so that the anti-sway block 505 can play a role in the clamping and fixing effect;

[0027] At the same time, the anti-falling pressure strip 601 can be inserted into the anti-falling groove 603, and the side elastic locking block 602 can be inserted into the locking groove 604, further strengthening the overall buckling strength.

[0028] Through the above steps, the upper plastic shell 1 and the lower plastic shell 2 can be preliminarily positioned and pressed together by setting the side end pressing component, and the use of the guide insertion component can ensure that the upper plastic shell 1 and the lower plastic shell 2 can be accurately buckled together. At the same time, the elastic positioning component and the anti-fall-off fixing component can be used to strengthen the buckling force, so as to solve the problem that the buckling device part used in the traditional plastic shell has only a single buckle, and the upper and lower plastic shells are prone to loosening when subjected to external force.

[0029] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. A snap-fit ​​device for a plastic housing, comprising an upper plastic housing (1); characterized in that: The invention also includes a lower plastic shell (2), a side pressing assembly, a guide insert assembly, an elastic positioning assembly and an anti-falling fixing assembly; the lower end of the upper plastic shell (1) is snap-connected with the lower plastic shell (2), the outer ends of the upper plastic shell (1) and the lower plastic shell (2) are both installed with side pressing assemblies, the four inner corners of the upper plastic shell (1) and the lower plastic shell (2) are both installed with guide insert assemblies, the two side connecting surfaces of the upper plastic shell (1) and the lower plastic shell (2) are installed with elastic positioning assemblies, the other two side connecting surfaces of the upper plastic shell (1) and the lower plastic shell (2) are installed with anti-falling fixing assemblies, the side pressing assembly includes an upper pressing plate (301), a first mounting hole (302), a pressing inner clamping plate (303), a lower pressing plate (304), a pressing slot (305) and a second mounting hole (306); both ends of the outer side of the upper plastic shell (1) are fixedly connected with the upper pressing plate (301), the first mounting hole (302) is provided inside the upper pressing plate (301), the lower end of the upper pressing plate (301) is fixedly connected with the pressing inner clamping plate (303), the lower end of the upper pressing plate (301) is clamped and connected with the lower pressing plate (304), the upper end surface of the lower pressing plate (304) is provided with a pressing slot (305), and the lower pressing plate (304) is provided with a second mounting hole (306).

2. The fastening device for a plastic housing according to claim 1, wherein: The guide insertion assembly comprises a reinforcement connection block (401), a guide sleeve (402), an insertion groove (403), a connection strip (404), a fixed pressure ring (405) and a guide insertion rod (406); the reinforcement connection block (401) is fixedly connected to the inner wall of the lower plastic shell (2), and the guide sleeve (402) is fixedly connected to the outer side of the reinforcement connection block (401).

3. The fastening device for a plastic housing according to claim 2, wherein: An insertion groove (403) is provided inside the guide sleeve (402), a connecting strip (404) is fixedly connected to the inner wall of the upper plastic shell (1), a fixed pressing ring (405) is fixedly connected to the side end of the connecting strip (404), and a guide insertion rod (406) is fixedly connected to the lower end of the fixed pressing ring (405).

4. The fastening device for a plastic housing according to claim 1, wherein: The elastic positioning assembly comprises a positioning snap-in plate (501), a buffer adjustment groove (502), a return spring (503), a limiting slide plate (504), an anti-swaying block (505) and a positioning snap-in groove (506); the upper end surface of the lower plastic shell (2) is fixedly connected to the positioning snap-in plate (501), and the buffer adjustment groove (502) is provided inside the positioning snap-in plate (501).

5. The fastening device for a plastic housing according to claim 4, wherein: A return spring (503) is installed inside the buffer adjustment groove (502), a limit slide (504) is installed on the side end of the return spring (503), and an anti-sway block (505) is installed on the side end of the limit slide (504).

6. The fastening device for a plastic housing according to claim 5, wherein: The lower end surface of the upper plastic shell (1) is provided with a positioning snap-in groove (506) adapted to the positioning snap-in plate (501), and the inner wall of the positioning snap-in groove (506) is provided with a snap-in hole for snapping and connecting with the anti-swaying block (505).

7. The fastening device for a plastic housing according to claim 1, wherein: The anti-falling fixing assembly comprises an anti-falling pressure strip (601), a side elastic locking block (602), an anti-falling groove (603) and a locking groove (604); the anti-falling pressure strip (601) is fixedly connected to both sides of the lower end of the upper plastic shell (1), and the side elastic locking blocks (602) are installed on both sides of the anti-falling pressure strip (601); the anti-falling groove (603) is opened on both sides of the upper end surface of the lower plastic shell (2), and the locking grooves (604) are opened at both ends of the inner side of the anti-falling groove (603).

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