Anti-impact household appliance plastic shell

Abstract

The utility model discloses an anti-impact household electrical appliance plastic housing, and relates to the technical field of electric appliance plastic housings, the anti-impact household electrical appliance plastic housing comprises a plastic housing having a housing main body, a storage hole groove, a threaded hole groove, a 7-shaped clamping block and a stress sheet, fasteners are arranged in the storage hole groove and the threaded hole groove, and each fastener comprises a fastening unit and an unlocking unit; the fastening unit is used for realizing fastening connection between the shell main body and the electric appliance box body; and the unlocking unit is used for extruding the stress piece, so that the 7-shaped clamping block deforms to release the clamping connection with the electric appliance box body. According to the utility model, by arranging the 7-shaped clamping block, the stress piece and the fastener, the plastic shell can be easily disassembled and assembled, and compared with a traditional structure that pre-clamping between the plastic shell and the electric appliance box body is removed through hard drawing, the unlocking pressing block extrudes the stress piece to enable the 7-shaped clamping block to deform so as to remove the clamping state; and the condition that the 7-shaped clamping block is damaged due to hard drawing can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical appliance plastic shells, in particular to an impact-resistant household appliance plastic shell. Background Art

[0002] With the development of plastic material technology, the use of plastic casings in household appliances is increasing, and the performance is getting better and better. For example, plastic casings produced from PC / ABS plastic alloys have high impact resistance and can well protect the electrical components of household appliances.

[0003] Existing connection methods for plastic housings of electrical appliances include snap-on, screw connection, and adhesive fixation. Among them, the adhesive fixation method cannot be disassembled and can only be disassembled violently, which is not conducive to later maintenance. Screw connection and snap-on connection are sometimes used in combination, first pre-connection is achieved by snap-on, and then fastened by screws. However, during the disassembly process of the snap-on method, the snap-on part is easily damaged due to excessive disassembly force, and secondary assembly is impossible. Based on this, an impact-resistant plastic housing for household appliances is provided. Utility Model Content

[0004] The purpose of the utility model is to provide an impact-resistant plastic shell for household appliances in order to solve the above-mentioned problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an impact-resistant household appliance plastic shell, comprising a plastic shell having a shell body, a receiving hole groove, and a threaded hole groove, wherein the receiving hole groove is arranged on the outer side of the shell body, the threaded hole groove is arranged on the inner side of the receiving hole groove and penetrates into the inner side of the shell body, a 7-shaped card block is fixed on the side of the shell body, a force-bearing sheet is fixedly connected to the side of the 7-shaped card block, and the positions of the 7-shaped card block and the force-bearing sheet are aligned with the threaded hole groove along the horizontal transverse direction;

[0006] The housing body is pre-jointed with the electrical box through a 7-shaped clamping block;

[0007] The receiving hole groove and the threaded hole groove are provided with fasteners inside, and the fasteners include a fastening unit and an unlocking unit;

[0008] The fastening unit is used to realize the fastening connection between the housing body and the electrical box body;

[0009] The unlocking unit is used to squeeze the stress-bearing sheet so that the 7-shaped clamping block is deformed and released from the clamping connection with the electrical box.

[0010] As a further solution of the utility model: the fastening unit includes a tightening head, a connecting column, and a stud;

[0011] The tightening head, connecting column and stud are fixedly connected in sequence along the horizontal longitudinal direction. The tightening head is received in the inner side of the receiving hole groove, the connecting column passes through the threaded hole groove, and the stud is threadedly tightened with the threaded cylinder on the electrical box body to achieve a fastened connection between the shell body and the electrical box body.

[0012] As a further solution of the utility model: the unlocking unit includes an unlocking pressing block;

[0013] The unlocking pressing block is threadedly connected to the outside of the stud and is distributed at one end of the stress-bearing plate away from the threaded hole groove;

[0014] When the stud is disconnected from the threaded cylinder on the electrical box, the stud drives the stress-bearing plate to approach and squeeze the stress-bearing plate, and the stress-bearing plate drives the 7-shaped clamping block to deform and bend toward the inside of the shell body, so as to release the clamping connection between the 7-shaped clamping block and the electrical box.

[0015] As a further solution of the utility model: the external thread groove of the stud matches the internal thread of the threaded hole groove, and the stud contacts the threaded hole groove when the unlocking pressure block contacts the force-bearing sheet.

[0016] As a further solution of the utility model: the shell body, the receiving hole groove, the threaded hole groove, the 7-shaped clamping block, and the stress-bearing sheet are integrally formed by an injection molding process.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] By providing a 7-shaped clamping block, a stress-bearing plate and fasteners, the plastic shell can be easily disassembled and assembled. Compared with the traditional structure of releasing the pre-clamping between the plastic shell and the electrical box by hard pulling, the 7-shaped clamping block is deformed and released from the clamping state by squeezing the stress-bearing plate with the unlocking pressure block, which can effectively avoid the 7-shaped clamping block from being damaged by hard pulling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 Another perspective view of the present utility model;

[0021] Figure 3 It is a schematic diagram of the disassembly of the fastener of the utility model;

[0022] Figure 4 This is a structural sectional view of the plastic shell of the utility model.

[0023] In the figure: 1. plastic shell; 101. shell body; 102. storage hole groove; 103. threaded hole groove; 104. 7-shaped clamp block; 105. force plate; 2. fastener; 201. tightening head; 202. connecting column; 203. stud; 204. unlocking block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figures 1 to 4 In an embodiment of the utility model, an impact-resistant household appliance plastic shell includes a plastic shell 1 having a shell body 101, a receiving hole groove 102, and a threaded hole groove 103. The receiving hole groove 102 is arranged on the outer side of the shell body 101, and the threaded hole groove 103 is arranged on the inner side of the receiving hole groove 102 and penetrates into the inner side of the shell body 101. A 7-shaped card block 104 is fixed on the side of the shell body 101, and a force-bearing sheet 105 is fixedly connected to the side of the 7-shaped card block 104. The positions of the 7-shaped card block 104 and the force-bearing sheet 105 are aligned with the threaded hole groove 103 along the horizontal transverse direction;

[0026] The housing body 101 is pre-jointed with the electrical box through a 7-shaped clamping block 104;

[0027] The receiving hole groove 102 and the threaded hole groove 103 are provided with a fastener 2, and the fastener 2 includes a fastening unit and an unlocking unit;

[0028] The fastening unit is used to realize the fastening connection between the housing body 101 and the electrical box;

[0029] The unlocking unit is used to squeeze the stress-bearing sheet 105, so that the 7-shaped clamping block 104 is deformed and released from the clamping connection with the electrical box;

[0030] The fastening unit includes a tightening head 201, a connecting column 202, and a stud 203;

[0031] The tightening head 201, the connecting column 202, and the stud 203 are sequentially fixedly connected along the horizontal longitudinal direction, the tightening head 201 is received inside the receiving hole groove 102, the connecting column 202 passes through the threaded hole groove 103, and the stud 203 is screwed with the threaded cylinder on the electrical box body to achieve a fastening connection between the housing body 101 and the electrical box body;

[0032] The unlocking unit includes an unlocking pressing block 204;

[0033] The unlocking pressing block 204 is threadedly connected to the outside of the stud 203 and is distributed at one end of the force-bearing sheet 105 away from the threaded hole 103;

[0034] When the stud 203 is disconnected from the threaded cylinder on the electrical box, the stud 203 drives 205 to approach the stress-bearing sheet 105 and squeeze the stress-bearing sheet 105, and the stress-bearing sheet 105 drives the 7-shaped clamping block 104 to deform and bend toward the inside of the shell body 101, so as to release the clamping connection between the 7-shaped clamping block 104 and the electrical box;

[0035] The external thread groove of the stud 203 matches the internal thread of the threaded hole groove 103 , and the stud 203 contacts the threaded hole groove 103 when the unlocking pressing block 204 contacts the force-bearing sheet 105 .

[0036] In this embodiment, it should be supplemented that: the plastic housing 1 is used to block the inspection port of the electrical box, a slot for a 7-shaped block 104 to be engaged is formed at the inner edge of the electrical box, and a threaded cylinder corresponding to the position of the threaded hole 103 is fixed on the inner side of the electrical box, and the threaded cylinder is used for the stud 203 to be threadedly connected;

[0037] When installing the plastic housing 1, the fastener 2 and the housing body 101 must be assembled first, the stud 203 must be inserted from the receiving hole 102 and completely penetrate the threaded hole 103, and then the unlocking block 204 must be screwed together with the stud 203 (it should be noted that a threaded hole matching the stud 203 is formed in the middle of the unlocking block 204). After the unlocking block 204 is moved to a suitable position on the stud 203, the unlocking block 204 and the stud 203 can be fixed by glue to ensure that the position of the unlocking block 204 is fixed (it should be noted that the unlocking block 204 does not squeeze the force-bearing sheet 105 at this time);

[0038] After that, the shell body 1 can be docked with the inspection port of the electrical box, and the 7-shaped card block 104 will be squeezed by the electrical box and deformed toward the inside of the shell body 1, so that the 7-shaped card block 104 can be smoothly inserted into the inside of the electrical box. When the triangular clamp head of the 7-shaped card block 104 is aligned with the card slot at the inner edge of the electrical box, the 7-shaped card block 104 will reset under the action of its own elastic force so that the triangular clamp head is clamped into the card slot, thus realizing the pre-connection of the shell body 1 and the electrical box;

[0039] Then, an external tool (such as a screwdriver or a hexagonal wrench) is inserted into the internal notch of the tightening head 201 and squeezed and rotated, so that the stud 203 contacts the threaded barrel on the electrical box and is screwed into the threaded barrel. Finally, the tightening head 201 is completely received in the receiving hole 102, thereby achieving the fastening of the plastic housing 1 and the electrical box.

[0040] If the plastic housing 1 needs to be disassembled, the operation steps are as follows:

[0041] The tightening head 201 is rotated in the opposite direction by an external tool to separate the stud 203 from the threaded barrel on the electrical box;

[0042] When the stud 203 is completely separated from the threaded barrel, the tightening head 201 can be manually pulled to move further outward, so that the stud 203 contacts the threaded hole 103. At this time, the unlocking pressing block 204 is attached to the force-bearing sheet 105.

[0043] Then, the tightening head 201 is rotated to make the stud 203 and the threaded hole groove 103 threadedly connected. At the same time, the stud 203 moves outward and drives the unlocking pressing block 204 to squeeze the force-bearing piece 105. The force-bearing piece 105 transmits this squeezing force to the 7-shaped clamping block 104, so that the 7-shaped clamping block 104 is bent and deformed toward the inside of the shell body 101, and then the clamping connection between the 7-shaped clamping block 104 and the electrical box is released. After that, the other fasteners 2 are synchronously operated, and the plastic shell 1 can be easily removed (it should be noted that when the plastic shell 1 is installed again, the stud 203 and the threaded hole groove 103 must be separated first);

[0044] The cooperation of the above multiple parts can realize easy disassembly and assembly of the plastic shell. Compared with the traditional structure of releasing the pre-clamping between the plastic shell and the electrical box by hard pulling, it can effectively avoid the 7-shaped clamping block 104 from being damaged by hard pulling.

[0045] Please refer to Figures 1 to 4 The shell body 101, the receiving hole groove 102, the threaded hole groove 103, the 7-shaped block 104, and the stress-bearing sheet 105 are integrally formed by an injection molding process.

[0046] In this embodiment: the integral molding of the plastic shell 1 can be achieved through this process, and its production process is the same as the traditional plastic shell production process, which is easy to promote production.

[0047] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An impact-resistant household appliance plastic housing, comprising a plastic housing (1) having a housing body (101), a receiving hole groove (102), and a threaded hole groove (103), wherein the receiving hole groove (102) is provided on the outside of the housing body (101), and the threaded hole groove (103) is provided on the inside of the receiving hole groove (102) and penetrates to the inside of the housing body (101), characterized in that: A 7-shaped clamping block (104) is fixed to the side of the shell body (101), and a force-bearing sheet (105) is fixedly connected to the side of the 7-shaped clamping block (104), and the positions of the 7-shaped clamping block (104) and the force-bearing sheet (105) are aligned with the threaded hole groove (103) along the horizontal transverse direction; The housing body (101) is pre-jointed with the electrical box body by means of a 7-shaped clamping block (104); A fastener (2) is arranged inside the receiving hole groove (102) and the threaded hole groove (103), and the fastener (2) comprises a fastening unit and an unlocking unit; The fastening unit is used to achieve a fastened connection between the housing body (101) and the electrical box; The unlocking unit is used to squeeze the stress-bearing sheet (105) so that the 7-shaped clamping block (104) is deformed and released from the clamping connection with the electrical appliance box.

2. The impact-resistant plastic housing for household appliances according to claim 1, characterized in that: The fastening unit comprises a tightening head (201), a connecting column (202), and a stud (203); The tightening head (201), the connecting column (202), and the stud (203) are fixedly connected in sequence along the horizontal longitudinal direction; the tightening head (201) is received inside the receiving hole groove (102); the connecting column (202) passes through the threaded hole groove (103); and the stud (203) is screwed together with a threaded cylinder on the electrical box to achieve a fastened connection between the housing body (101) and the electrical box.

3. The impact-resistant plastic housing for household appliances according to claim 2, characterized in that: The unlocking unit comprises an unlocking pressing block (204); The unlocking pressing block (204) is threadedly connected to the outside of the stud (203) and is distributed at one end of the force-bearing sheet (105) away from the threaded hole groove (103); When the stud (203) is disconnected from the threaded cylinder on the electrical box, the stud (203) drives (205) to approach the stress-bearing sheet (105) and squeeze the stress-bearing sheet (105), and the stress-bearing sheet (105) drives the 7-shaped clamping block (104) to deform and bend toward the inside of the shell body (101), so as to release the clamping connection between the 7-shaped clamping block (104) and the electrical box.

4. The impact-resistant plastic housing for household appliances according to claim 3, characterized in that: The external thread groove of the stud (203) matches the internal thread of the threaded hole groove (103), and when the unlocking pressing block (204) contacts the force-bearing sheet (105), the stud (203) contacts the threaded hole groove (103).

5. The impact-resistant plastic housing for household appliances according to claim 1, characterized in that: The housing body (101), the receiving hole groove (102), the threaded hole groove (103), the 7-shaped clamping block (104), and the stress-bearing sheet (105) are integrally formed by an injection molding process.

Images