Shell assembly of small-sized charging device

Abstract

The utility model discloses a shell assembly of a small-sized charging device. The shell assembly comprises an upper shell and a bottom plate, the upper shell comprises an upper top plate, and a rectangular frame-shaped side plate part extending downwards is formed on the edge part of the upper top plate; a sealing groove formed by extending along the edge is formed in the edge of the top face of the bottom plate, an inwards-protruding supporting part extending upwards is formed in the position, on the inner side of the sealing groove, of the top face of the bottom plate, the sealing ring is embedded in the sealing groove, and the bottom face of the side plate part abuts against the top face of the sealing ring in a pressing mode. Sealing between the upper shell and the bottom plate and sealing between the fixing screws are achieved through the sealing rings and the sealing washers, the sealing time is long, the sealing effect is good, dismounting and mounting of the fixing screws are not affected, the upper shell and the bottom plate are mounted after being dismounted, sealing can be stored only by mounting the sealing rings in place, and the sealing effect is basically not affected by dismounting, mounting and maintaining.

Description

Technical field:

[0001] The utility model relates to the technical field of charging equipment, and more specifically to a shell component of a small charging device. Background technology:

[0002] In the existing charger, the shell is generally connected by bolts to the bottom plate, and some chargers are in some corrosive environments, and the edges of the shell and the bottom plate generally need to be sealed. The existing sealing method is to apply epoxy resin sealant on the edges of the shell and the bottom plate to achieve sealing, which is low in cost. However, the product with this structure loses its sealing effect after the shell and the bottom plate are opened, and the sealing cannot be achieved. It needs to be re-glued, and the use effect is poor. In addition, the connection of the bolts is also easy to leak liquid, so the bolts also need to be coated with sealant during installation, which makes it troublesome to disassemble the bolts later, and makes it troublesome to repair and maintain later.

[0003] Moreover, during use, when used for a long time, it will cause problems such as degumming and the sealing effect will be reduced. Utility model content:

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a small charging device housing assembly, which adopts a sealing ring and a sealing gasket to achieve the sealing of the upper housing and the bottom plate and the sealing of the fixing screws. The sealing time is long and the effect is good, and the disassembly and assembly of the fixing screws are not affected. After the upper housing and the bottom plate are disassembled and then installed, it is only necessary to install the sealing ring in place to preserve the seal, so that the disassembly and maintenance thereof will basically not affect the sealing effect.

[0005] The solution of the utility model to solve the technical problem is:

[0006] A small charging device housing assembly, comprising an upper housing and a bottom plate;

[0007] The upper shell includes an upper top plate, and the edge of the upper top plate is formed with a rectangular frame-shaped side plate portion extending downward;

[0008] The top edge of the bottom plate is provided with a sealing groove extending along the edge, the top surface of the bottom plate at the inner side of the sealing groove is formed with an inner raised support portion extending upward, the sealing ring is nested in the sealing groove, and the bottom surface of the side plate portion is pressed against the top surface of the sealing ring.

[0009] A rectangular frame-shaped protrusion extending downward is formed on the inner side of the bottom surface of the rectangular frame-shaped side plate portion, the bottom of the protrusion is inserted into the sealing groove, the bottom surface of the protrusion is pressed against the top surface of the sealing ring, and the outer wall surface of the inner protrusion support portion is close to the lower inner wall of the side plate portion.

[0010] The four corners of the top surface of the bottom plate and the middle of the left and right sides are all formed with upwardly extending connecting sleeves, the middle through hole of the connecting sleeve is connected with the corresponding upwardly extending stepped through hole formed on the bottom surface of the bottom plate, the bottom surface of the upper top plate of the corresponding upper shell (10) is formed with a downwardly extending upper connecting sleeve, the inner side wall of the middle through hole of the upper connecting sleeve is formed with an internal thread, the screw part of the fixing screw is inserted into the corresponding stepped through hole and the middle through hole of the connecting sleeve and is screwed on the corresponding internal thread of the upper connecting sleeve.

[0011] The inner diameter of the upper hole section of the stepped through hole is smaller than the inner diameter of the lower hole section;

[0012] A sealing gasket is inserted into the lower part of the screw rod of the fixing screw, and the sealing gasket is clamped between the top surface of the rotating part of the fixing screw and the top surface of the lower hole section of the corresponding stepped through hole.

[0013] The outstanding effects of the utility model are:

[0014] Compared with the prior art, it adopts sealing rings and sealing washers to achieve the sealing between the upper shell and the bottom plate and the sealing of the fixing screws. The sealing time is long and the effect is good, and it does not affect the disassembly and assembly of the fixing screws. After the upper shell and the bottom plate are disassembled and then installed, it is only necessary to install the sealing ring in place to preserve the seal, so that its disassembly and maintenance basically does not affect its sealing effect. Description of the drawings:

[0015] Figure 1 It is a partial structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the angle-changing partial structure of the utility model;

[0017] Figure 3 It is an exploded schematic diagram of the utility model;

[0018] Figure 4 It is a schematic diagram of the local structure of the upper shell;

[0019] Figure 5 It is a schematic diagram of the partial structure of the upper shell at a changed angle. Specific implementation method:

[0020] The present invention is described in detail below in conjunction with the accompanying drawings and specific preferred embodiments, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. These embodiments are only for illustrative purposes and are not intended to limit the scope of the present invention.

[0021] For example, see Figures 1 to 5 As shown, a small charging device housing assembly includes an upper housing 10 and a bottom plate 20; a control main board is mounted on the top surface of the bottom plate 20;

[0022] The upper shell 10 includes an upper top plate, and a rectangular frame-shaped side plate portion 11 extending downward is formed on the edge of the upper top plate;

[0023] The top edge of the bottom plate 20 is provided with a sealing groove 21 extending along the edge, and the top surface of the bottom plate 20 at the inner side of the sealing groove 21 is formed with an inner convex support portion 22 extending upward in the shape of a rectangular frame, and the sealing ring 1 is nested in the sealing groove 21, and the bottom surface of the side plate 11 is pressed against the top surface of the sealing ring 1, and the upper shell 10 and the bottom plate 20 are fixedly connected by bolts. The sealing ring 1 enables the upper shell 10 and the bottom plate 20 to be sealed, and the sealing time is long. When the upper shell 10 and the bottom plate 20 are disassembled and then installed, the sealing ring 1 can still be used to achieve sealing.

[0024] A rectangular frame-shaped raised portion 111 extending downward is formed on the inner side of the bottom surface of the rectangular frame-shaped side plate portion 11, the bottom of the raised portion 111 is inserted into the sealing groove 21, the bottom surface of the raised portion 111 is pressed against the top surface of the sealing ring 1, and the outer wall surface of the inner raised support portion 22 is in close contact with the lower inner wall of the side plate portion 11. The inner raised support portion 22 can support the lower inner wall of the side plate portion 11, thereby improving the rigidity of the entire product.

[0025] Furthermore, upwardly extending connecting sleeves 23 are formed at the four corners of the top surface of the base plate 20 and in the middle of the left and right sides. The middle through hole of the connecting sleeve 23 is communicated with the corresponding stepped through hole extending upward formed on the bottom surface of the base plate 20. The bottom surface of the upper top plate of the corresponding upper shell 10 is formed with a downwardly extending upper connecting sleeve 12. An internal thread is formed on the inner side wall of the middle through hole of the upper connecting sleeve 12. The screw portion of the fixing screw 2 is inserted into the corresponding stepped through hole and the middle through hole of the connecting sleeve 23 and is screwed onto the corresponding internal thread of the upper connecting sleeve 12.

[0026] The inner diameter of the upper hole section of the stepped through hole is smaller than the inner diameter of the lower hole section;

[0027] The lower part of the screw portion of the fixing screw 2 is inserted with a sealing gasket 3, and the sealing gasket 3 is clamped between the top surface of the rotating portion of the fixing screw 2 and the top surface of the lower hole section of the corresponding stepped through hole. The sealing gasket 3 can improve the sealing performance between the fixing screw 2 and the bottom plate 20, so that liquid and other substances will not enter from the gap between the fixing screw 2 and the bottom plate 20, further improving the sealing effect. Moreover, when the fixing screw 2 is installed after being disassembled, it only needs to ensure that the sealing gasket 3 is installed, and the sealing effect can also be ensured, and the sealing effect is good.

[0028] Furthermore, downwardly extending connecting sleeve portions 24 are formed at the four corners of the bottom surface of the base plate 20, and the corresponding stepped through holes correspond to and communicate with the connecting sleeve portions 24 up and down, and the elastic pad 5 is nested in the corresponding connecting sleeve portions 24, and the top surface of the elastic pad 5 is pressed against the bottom surface of the base plate 20 and covers the bottom surface of the rotating portion of the fixing screw corresponding to the connecting sleeve portion 24.

[0029] The outer side walls of the front and rear parts of the bottom plate 20 are formed with connecting blocks 25 extending outward horizontally, and the middle part of the connecting blocks 25 is formed with connecting vertical through holes 26 .

[0030] The fixing can be achieved by passing the screw rod of the bolt through the connecting vertical through hole 26 and being fixed on the corresponding product.

[0031] A breathable valve 9 is fixed on the inner side of one of the side plates of the upper shell 10, and the air outlet of the breathable valve 9 is communicated with the through hole on the side plate. When the internal pressure of this embodiment is too high, the pressure is reduced by ventilation through the breathable valve 9. The breathable valve 9 is an existing conventional component and will not be described in detail. Other one-way valves may also be used.

[0032] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The scope of patent protection of the present invention should be limited by the claims.

Claims

1. A small charging device housing assembly, characterized in that: It comprises an upper shell (10) and a bottom plate (20); The upper shell (10) comprises an upper top plate, and a rectangular frame-shaped side plate portion (11) extending downward is formed on the edge of the upper top plate; The top edge of the bottom plate (20) is provided with a sealing groove (21) extending along the edge, and the top surface of the bottom plate (20) at the inner side of the sealing groove (21) is formed with an inner protruding support portion (22) in the shape of a rectangular frame extending upward, the sealing ring (1) is nested in the sealing groove (21), the bottom surface of the side plate (11) is pressed against the top surface of the sealing ring (1), and the upper shell (10) and the bottom plate (20) are fixedly connected by bolts.

2. A small charging device housing assembly according to claim 1, characterized in that: A rectangular frame-shaped raised portion (111) extending downward is formed on the inner side of the bottom surface of the rectangular frame-shaped side plate portion (11), the bottom of the raised portion (111) is inserted into the sealing groove (21), the bottom surface of the raised portion (111) is pressed against the top surface of the sealing ring (1), and the outer wall surface of the inner raised support portion (22) is tightly attached to the lower inner wall of the side plate portion (11).

3. A small charging device housing assembly according to claim 1, characterized in that: The four corners of the top surface of the bottom plate (20) and the middle of the left and right sides are all formed with upwardly extending connecting sleeves (23), the middle through hole of the connecting sleeve (23) is communicated with the corresponding upwardly extending stepped through hole formed on the bottom surface of the bottom plate (20), the bottom surface of the upper top plate of the corresponding upper shell (10) is formed with a downwardly extending upper connecting sleeve (12), the inner side wall of the middle through hole of the upper connecting sleeve (12) is formed with an internal thread, the screw portion of the fixing screw (2) is inserted into the corresponding stepped through hole and the middle through hole of the connecting sleeve (23) and is screwed onto the corresponding internal thread of the upper connecting sleeve (12).

4. A small charging device housing assembly according to claim 3, characterized in that: The inner diameter of the upper hole section of the stepped through hole is smaller than the inner diameter of the lower hole section; A sealing gasket (3) is inserted into the lower part of the screw rod of the fixing screw (2), and the sealing gasket (3) is clamped between the top surface of the rotating part of the fixing screw (2) and the top surface of the lower hole section of the corresponding stepped through hole.

5. A small charging device housing assembly according to claim 4, characterized in that: The four corners of the bottom surface of the base plate (20) are each formed with a downwardly extending connecting sleeve portion (24), the corresponding stepped through holes correspond to and communicate with the connecting sleeve portion (24) up and down, the elastic pad (5) is nested in the corresponding connecting sleeve portion (24), the top surface of the elastic pad (5) is pressed against the bottom surface of the base plate (20) and covers the bottom surface of the rotating portion of the fixing screw () corresponding to the connecting sleeve portion (24).

6. A small charging device housing assembly according to claim 1, characterized in that: The outer side walls of the front and rear parts of the bottom plate (20) are formed with connecting blocks (25) extending horizontally outward, and the middle part of the connecting block (25) is formed with a connecting vertical through hole (26).

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