TWI686020B - Wiring appliances - Google Patents

Abstract

A wiring appliance includes a housing, a first electronic module and a second electronic module. The shell includes a shell base and a shell cover. The shell seat has a seat body, a first lug and a second lug, the seat body has a seat joint edge connected with the shell cover, the first lug and the second lug extend from the seat body toward the shell cover and are spaced apart from each other The seating edge is engaged, and the first lug has a guide portion extending in the first direction. The cover has a jack. The first electronic module includes a first circuit board and an electrical connector provided on the first circuit board. The normal direction of the first circuit board is parallel to the first direction and is supported and limited by the first lug and the second lug together. The electrical connector is provided corresponding to the jack for the docking connector to dock with the electrical connector through the jack. The second electronic module is electrically connected to the first electronic module and includes a second circuit board. The second circuit board is disposed perpendicular to the first circuit board and is positioned in the seat body by being guided by a guide portion during installation.

Description

Wiring appliances

The invention relates to a wiring appliance, in particular to a wiring appliance used for connecting a power line.

At present, many portable electronic products are equipped with rechargeable batteries, and the characteristics of information and power can be transmitted through the Universal Serial Bus (USB) communication protocol. Usually, a USB connector is also used to externally supply power to Rechargeable battery charging.

There is a USB socket that can be installed on the wall, which can convert AC power into DC power and convert voltage, for plugging of USB cables connected to portable electronic products, such as Taiwan Patent Publication No. 201826652A (Japan corresponding Case JP2018113840A) and No. 201826653A (Japanese corresponding case JP2018113239A). Such USB sockets still have room for improvement in terms of size miniaturization.

Therefore, one of the objects of the present invention is to provide a wiring appliance that can solve at least one of the aforementioned problems.

Therefore, in some embodiments, the wiring appliance of the present invention includes a housing, a first electronic module, and a second electronic module. The shell includes a shell seat and a shell cover. The cover and the cover of the housing are combined to form an accommodating space. The shell base has a body, a first lug and a second lug. The seat body has a joint edge connected with the shell cover. The first lug and the second lug extend from the seat body toward the housing cover to protrude from the seat engaging edge, and the first lug has a guide portion extending in a first direction. The shell cover has a cover body, and the cover body has an insertion hole penetrating in the first direction to communicate the accommodating space with the outside world. The first electronic module is located in the accommodating space and includes a first circuit board and an electrical connector provided on the first circuit board. The normal direction of the first circuit board is parallel to the first direction and is supported and limited by the first lug and the second lug together. The electrical connector is corresponding to the jack for the mating connector to dock with the electrical connector through the jack. The second electronic module is located in the accommodating space and electrically connected to the first electronic module, and includes a second circuit board. The second circuit board is disposed perpendicular to the first circuit board and is guided and positioned in the seat body by the guide portion during installation.

In some embodiments, the first connecting wall has a limiting groove corresponding to the guide portion of the first lug, and the limiting groove extends in the first direction to accommodate the second circuit board The side edge.

In some embodiments, the shell base further has a first reinforcing rib connecting the first lug and the base body.

In some embodiments, the first lug and the second lug are located inside the seat engaging edge, the first reinforcing rib extends from the seat engaging edge and is connected to the outer surface of the first lug, the The shell seat further has a second reinforcing rib extending from the seat joint edge and connected to the outer surface of the second lug, the cover body further has a cover joint edge contacting the seat joint edge, and the cover is joined The rim has notch portions that cooperate with the first reinforcement rib and the second reinforcement rib, respectively.

In some implementations, the first lug and the second lug each have a slot, the first circuit board has a main board portion and two protruding from opposite sides of the main board portion toward each other in opposite directions A convex block, and the two convex blocks are respectively stuck in the two clamping slots.

In some embodiments, the shell cover further has at least one anti-static rib, the at least one anti-static rib extends in the first direction toward the shell base to protrude from the cover body, the shell base further has An anti-static rib cooperates with at least one escape groove to accommodate the at least one anti-static rib.

In some embodiments, the cover body further has a first cover side wall, a second cover side wall, two cover connection walls and a top wall, the first cover side wall is spaced from the second cover side wall, the two The cover connecting walls are spaced apart from each other and the four are connected to form a continuous surrounding wall. The top wall is connected to the first cover side wall, the second cover side wall and one side of the two cover connecting walls and forms the insertion hole. At least one anti-static rib is formed on the inner surface of the first cover side wall, the seat body further has a first seat side wall corresponding to the first cover side wall, a second seat side wall corresponding to the second cover side wall, and respectively A first seat connection wall and a second seat connection wall should be formed on the two cover connection walls, the at least one escape groove is formed on the side wall of the first seat, the second circuit board is disposed leaning to the side wall of the first seat, the first The lug is connected to the first seat connection wall, and the second lug is connected to the second seat connection wall.

In some embodiments, the base body has a limiting groove corresponding to the guide portion of the first lug, the limiting groove extends in the first direction to accommodate a side of the second circuit board edge.

In some embodiments, the seat body further has a partition wall, the partition wall connects the first seat side wall and the second seat side wall and is located between the first seat connection wall and the second seat connection wall, and The seat body is spaced apart from a first storage portion adjacent to the first seat connection wall and a second storage portion adjacent to the second seat connection wall, the partition wall is formed on a side facing the first seat connection wall Another limiting groove opposite to the limiting groove of the first connecting wall, the two limiting grooves respectively accommodate opposite sides of the second circuit board, and the second electronic module mainly accommodates In the first storage section.

In some embodiments, a third electronic module is also included. The third electronic module is electrically connected to the second electronic module and is mainly accommodated in the second receiving portion, and includes a parallel to the first circuit board A third circuit board provided and supported by the partition wall, the case cover further has a plurality of first pressing ribs and a plurality of second pressing ribs formed on the side walls of the first cover and the second cover A pressing rib is used to press against the first circuit board, and the second pressing ribs extend in the first direction to protrude from the cover engaging edge to press against the third circuit board.

In some embodiments, the first circuit board has a plurality of notches for the second pressing ribs to pass through.

The invention has at least the following effects: the first lug has a guide portion to make the process of installing the second electronic module easier. In addition, the shell cover and the shell seat respectively have matching anti-static ribs and avoidance grooves on one side of the adjacent second circuit board, which can have better anti-static shielding for the second circuit board, and when assembling the shell cover and The housing has a foolproof function.

Referring to FIGS. 1 to 3, an embodiment of a wiring appliance of the present invention includes a housing 1, a first electronic module 2, a second electronic module 3, and a third electronic module 4.

Referring to FIGS. 4 and 5, the housing 1 includes a housing base 11 and a housing cover 12. The housing cover 12 and the housing base 11 are combined to form an accommodating space 10.

The shell base 11 has a base 13, a first support portion 111 and a second support portion 112. The seat body 13 has a first seat side wall 131, a second seat side wall 132, a first seat connecting wall 133 and a second seat connecting wall 134, the first seat side wall 131 and the second seat side wall 132 are spaced apart from each other , The first seat connecting wall 133 and the second seat connecting wall 134 are spaced apart and connect the first seat side wall 131 and the second seat side wall 132, the four are connected to form a surrounding wall and together form the cover 12接的一个联合缘135. The first supporting portion 111 includes a first lug 14 and a second lug 15. The first lug 14 and the second lug 15 extend from the base 13 toward the housing cover 12 and are spaced apart from each other The engaging edge 135 is formed, and each of the first lug 14 and the second lug 15 has a locking slot 18. Specifically, the first lug 14 is connected to the first seat connection wall 133, the second lug 15 is connected to the second seat connection wall 134, and the first lug 14 and the second lug 15 are located at the The inner side of the seat engaging edge 135 extends in a first direction D to protrude from the seat engaging edge 135. In this embodiment, the shapes of the first lug 14 and the second lug 15 are generally trapezoidal, and the base 13 is connected to the bottom and the shell 12 is near the top, and the bottom is higher than the bottom The length is longer, and the groove 18 is formed concavely from the surface of the upper bottom. The shape and arrangement position of the first lug 14 and the second lug 15 roughly correspond to each other. The side edges of the first seat side wall 131 and the second seat side wall 132 are symmetrical oblique sides, but the first lug 14 has a guide portion 141 extending in the first direction D, the guide portion 141 is formed at The first lug 14 is close to the side edge of the first seat side wall 131, so that the side edge (waist edge) of the first lug 14 close to the first seat side wall 131 is vertically connected to the upper bottom, compared to the first The corresponding side edges of the two lugs (the side edges close to the first seat side wall 131) are retracted, and the first lug 14 is close to the side edge (waist side) of the second seat side wall 132 and the second lug 15 The side edges of the corresponding should be the same hypotenuse.

The shell base 11 also has a first reinforcing rib 16 and a second reinforcing rib 17. The first reinforcing rib 16 extends from the seat engaging edge 135 and is connected to the outer surface of the first lug 14 to connect the first lug 14 and the seat body 13 so as to strengthen the structure of the first lug 14 strength. Similarly, the second reinforcing rib 17 extends from the seat engaging edge 135 and is connected to the outer surface of the second lug 15 to connect the second lug 15 and the seat body 13 to strengthen the second lug 15 structural strength. The second support portion 112 is substantially frame-shaped and protrudes from the inner surfaces of the first seat sidewall 131 and the second seat sidewall 132 and includes a partition wall 136 that connects the first seat sidewall 131 and the second The seat side wall 132 is located between the first seat connecting wall 133 and the second seat connecting wall 134, and separates the seat body 13 from a first receiving portion 137 adjacent to the first seat connecting wall 133 and adjacent A second storage portion 138 of the second seat connecting wall 134. In addition, the housing base 11 also has a pair of limiting grooves 139 located in the first receiving portion 137 and respectively formed in the partition wall 136 and the first base connecting wall 133. The pair of limiting grooves 139 is located in the first A direction D extends, wherein the limiting groove 139 in the first seat connecting wall 133 corresponds to the guide portion 141 of the first lug 14, so that one side edge of the first lug 14 defines the limiting groove A groove wall surface of the groove 139 extends integrally.

Referring to FIGS. 3 and 4, the cover 12 has a cover 121, a plurality of first pressing ribs 122, a plurality of second pressing ribs 123, two anti-static convex ribs 124, and two fastening pieces 125. The cover 121 has a first cover side wall 126, a second cover side wall 127, two cover connection walls 128 and a top wall 129, the first cover side wall 126 is spaced from the second cover side wall 127, the two covers The connecting walls 128 are spaced from each other and the four are connected to form a continuous surrounding wall and together form a cover joint edge 121b. The top wall 129 is connected to the first cover side wall 126, the second cover side wall 127, and the two cover connecting walls One side of 128 is formed with a insertion hole 121a penetrating in the first direction D to communicate the accommodating space 10 with the outside world. The first cover sidewall 126 corresponds to the first seat sidewall 131, the second cover sidewall 127 corresponds to the second seat sidewall 132, and the two cover connection walls 128 correspond to the first seat connection wall 133 and the second seat connection wall, respectively 134. The cover engaging edge 121b has two notch portions 121c that cooperate with the first reinforcing rib 16 and the second reinforcing rib 17, respectively, that is, the two notch portions 121c are formed on the two cover connecting walls 128, respectively. When the cover 12 and the base 11 are closed (see FIG. 1), the notch 121c of the cover 12 correspondingly accommodates the first reinforcing rib 16 and the second reinforcing rib 17 to form a concave-convex mating complementary complementary joint, so that the whole The appearance is more beautiful. The first pressing ribs 122 and the second pressing ribs 123 are formed on the inner surface of the cover 121. In this embodiment, the inner surfaces of the first cover side wall 126 and the second cover side wall 127 each form two Two first pressing ribs 122 and two second pressing ribs 123. In a modified embodiment, the inner surfaces of the first cover sidewall 126 and the second cover sidewall 127 may also form only one first pressing rib 122 and one second Two pressing ribs 123, one end of the first pressing ribs 122 is connected to the top wall 129 and extends in the first direction D into an elongated shape, one end of the second pressing ribs 123 is connected to the top wall 129 and is in the first direction D extends in an elongated shape and protrudes toward the housing base 11 of the cover engaging edge 121b of the cover 121. The first pressing ribs 122 are used to interact with the first electronic module 2, and the second pressing ribs 123 are used to interact with the third electronic module 4, which will be described in detail later.

The anti-static ribs 124 are formed on the inner surface of the first cover sidewall 126 and have one end connected to the top wall 129 and extending in the first direction D to protrude from the cover engaging edge 121b. The first side wall 131 has two escape grooves 131 a that cooperate with the anti-static ribs 124 to accommodate the anti-static ribs 124 respectively. The anti-static convex rib 124 and the concave-convex groove 131a are accommodated together (see FIG. 6), so that the joint between the first cover sidewall 126 and the first seat sidewall 131 is not a flat gap, that is, it is not a flat gap So that the first cover sidewall 126 and the first seat sidewall 131 have better anti-static effect. Moreover, since the anti-static ribs 124 and the avoidance grooves 131a must be positioned correspondingly, the cover 12 and the housing 11 can be closed, so that the foolproof function can be achieved, that is, only on the first cover side wall 126 and the first cover Only when the position of a side wall 131 corresponds to the case cover 12 can be closed with the shell seat 11, if the operator needs to cover the shell cover 12 with the shell seat 11 in a way that the first cover side wall 126 corresponds to the second seat side wall 132 Cannot be closed. In a modified embodiment, only one anti-static rib 124 may be implemented. The two fastening pieces 125 respectively extend from the first cover side wall 126 and the second cover side wall 127 in the direction of the housing base 11 and each have two fastening holes 125a. The first side wall 131 and the second seat side wall 132 each form two locking blocks 19 respectively corresponding to the button holes 125a. As shown in FIG. 1, when the housing cover 12 and the housing base 11 are closed, the clamping block 19 is accommodated in the buckle hole 125 a, so that the housing cover 12 and the housing base 11 are relatively fixed without separation.

Referring to FIGS. 2, 3, 7 and 8, the first electronic module 2 is located in the accommodating space 10 and includes a first circuit board 21 and an electrical connector 22 provided on the first circuit board 21 . The normal direction of the first circuit board 21 is parallel to the first direction D and is supported and limited by the first support portion 111 (the first lug 14 and the second lug 15 ). Specifically, the first circuit board 21 has a main board portion 211 and two protruding blocks 212 protruding in opposite directions from both sides of the main board portion 211, and the two protruding blocks 212 are respectively engaged on the two cards The groove 18 allows the first circuit board 21 to be limited on a plane perpendicular to the first direction D. When the cover 12 and the housing 11 are closed, the first pressing rib 122 in the cover 12 is pressed against the surface of the first circuit board 21 facing the cover 12, that is, a part of the first circuit board 21 The side is supported and limited by the first supporting portion 111 and pressed against the first pressing ribs 122 on the opposite side of the first supporting portion 111, and is supported by the first pressing ribs 122 and the first in the first direction D Department 111 limits together. The electrical connector 22 is disposed corresponding to the jack 121a for the mating connector to dock with the electrical connector 22 through the jack 121a. In this embodiment, the electrical connector 22 is described as a connector that conforms to the USB specification. In a modified embodiment, other types of connectors can also be used, such as a high definition multimedia interface (High Definition Multimedia Interface, Connector for HDMI), connector for Video Graphics Array (VGA), connector for Local Area Network (LAN), etc.

Referring to FIGS. 3, 4, and 9 to 11, the second electronic module 3 is located in the accommodating space 10 and electrically connected to the first electronic module 2, and includes a second circuit board 31. The second circuit board 31 is disposed perpendicular to the first circuit board 21 and is guided and positioned in the seat body 13 by the guide portion 141 during installation. In this embodiment, the guide portion 141 is formed by the side edge of the first lug 14 close to the side wall 131 of the first seat, and corresponds to the position of the limiting groove 139 on the connecting wall 133 of the first seat. When the second electronic module 3 is placed in the housing 11, the second circuit board 31 can be placed into the limiting grooves 139 by the guide of the guide portion 141, so that the second circuit board 31 is parallel to the first The two edges of the one direction D are respectively accommodated in the two limiting grooves 139. The width of the limiting groove 139 is slightly larger than the thickness of the second circuit board 31, so that the second circuit board 31 is easily placed in the limiting groove 139 The inner moves in the first direction D. The second electronic module 3 is mainly accommodated in the first accommodating portion 137, the second circuit board 31 is disposed against the first seat sidewall 131, and the anti-static rib 124 is accommodated in the first seat sidewall 131 The avoiding groove 131a has better anti-static shielding to the second circuit board 31.

Referring to FIGS. 3, 4, 9, 11 and 12, the third electronic module 4 is located in the accommodating space 10 and is electrically connected to the second electronic module 3, and includes a parallel to the first circuit board 21 A third circuit board 41 is provided, the third circuit board 41 is supported by the second support portion 112 and pressed by the second pressing ribs 123 on the opposite side of the second support portion 112, the first circuit board 21 has a plurality of notches 213 for the second pressing ribs 123 to pass through (see FIG. 7). The third support board 112 and the second pressing ribs 123 limit the third circuit board 41 in the first direction D. In this embodiment, the second circuit board 31 partially extends over the partition wall 136 and is located between the third circuit board 41 and the first circuit board 21, and the second circuit board 31 is provided with a connection terminal (not shown) , The connection terminal is soldered to the first circuit board 21, and the second circuit board 31 and the first circuit board 21 are electrically connected and relatively fixed.

In this embodiment, the third electronic module 4 further includes two conductive terminals 42 provided on the third circuit board 41 for connecting wires (not shown) of the external power supply, the conductive terminals 42 and the external power supply wires The connection method is the same as Taiwan Patent Publication Nos. 201826652A and 201826653A, and will not be described in detail here. The third circuit board 41 and the second circuit board 31 are electrically connected by wires, so as to transmit the AC power introduced by the wires of the external power source to the second circuit board 31. The second electronic module 3 is used to convert AC power into DC power and transmit the converted DC power to the first circuit board 21. The second electronic module 3 further includes a plurality of electronic components 32, such as transformers, electrolytic capacitors, resistors, inductors, and the like. The first electronic module 2 further includes a plurality of electronic components 23, such as smoothing capacitors, to smooth the DC power from the second circuit board 31 to output to the electrical connector. The electronic components 32 of the second electronic module 3 are disposed on the same side of the second circuit board 31, and the electronic components 23 and the electrical connectors 22 of the first electronic module 2 are disposed on the same side of the first circuit board 21.

The first support portion 111 and the first pressing ribs 122 limit the first circuit board 21 in the first direction D, and the second support portion 112 and the second pressing ribs 123 control the third circuit The upper limit of the board 41 in the first direction D can save the supporting member compared with the aforementioned Taiwan Patent Publication, that is, the overall volume can be further reduced, and the wiring appliance can be more compact.

In this embodiment, when the aforementioned components are to be assembled, the first electronic module 2, the second electronic module 3, and the third electronic module 4 are electrically connected together first. At this time, the first electronic module 2, the second electronic The positions of the module 3 and the third electronic module 4 are relatively positioned, and then put into the housing base 11 together, and finally the housing cover 12 and the housing base 11 are combined together to complete the assembly. It can be guided by the guide portion 141 of the first lug 14 during assembly, so that the operator can easily install and position the second electronic module 3, and at the same time it is easy to make the first electronic module 2 and the third electronic module 4 is positioned in the housing 11 together.

In summary, through the aforementioned structural design of the housing 1 and the arrangement relationship of the first electronic module 2, the second electronic module 3, and the third electronic module 4, the wiring appliance can be further miniaturized. With the first lug 14 having the guide portion 141, the process of installing the second electronic module 3 is easier. In addition, the housing cover 12 and the housing base 11 respectively have matching anti-static ribs 124 and escape grooves 131a on the side adjacent to the second circuit board 31, which can provide better anti-static shielding to the second circuit board 31. And it has a foolproof function when assembling the shell cover 12 and the shell base 11.

However, the above are only examples of the present invention, and should not be used to limit the scope of the present invention. Any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still classified as This invention covers the patent.

1‧‧‧Housing

10‧‧‧accommodation space

11‧‧‧Shell

111‧‧‧First support

112‧‧‧Second support

12‧‧‧Shell cover

121‧‧‧cover

121a‧‧‧jack

121b‧‧‧Cover joint edge

121c‧‧‧Notch

122‧‧‧ First pressing rib

123‧‧‧second pressing rib

124‧‧‧Anti-static ribs

125‧‧‧Clamping piece

125a‧‧‧button hole

126‧‧‧The first cover side wall

127‧‧‧Second cover side wall

128‧‧‧ Cover connection wall

129‧‧‧Top wall

13‧‧‧Body

131‧‧‧The first side wall

131a‧‧‧ Avoidance slot

132‧‧‧Second side wall

133‧‧‧The first connecting wall

134‧‧‧Second connecting wall

135‧‧‧seam

136‧‧‧ partition

137‧‧‧First Storage Department

138‧‧‧Second storage

139‧‧‧Limit groove

14‧‧‧First lug

141‧‧‧Guiding Department

15‧‧‧second lug

16‧‧‧First reinforcing rib

17‧‧‧Second reinforcement rib

18‧‧‧Card slot

19‧‧‧block

2‧‧‧The first electronic module

21‧‧‧ First circuit board

211‧‧‧Main Board Department

212‧‧‧Bump

213‧‧‧Notch

22‧‧‧Electrical connector

23‧‧‧Electronic components

3‧‧‧Second electronic module

31‧‧‧ Second circuit board

32‧‧‧Electronic components

4‧‧‧The third electronic module

41‧‧‧ Third circuit board

42‧‧‧Conductive terminal

D‧‧‧First direction

Other features and functions of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: FIG. 1 is a perspective view of one embodiment of the wiring appliance of the present invention; 2 is an exploded perspective view of one of the embodiments; 3 is an exploded perspective view of one of the embodiments; 4 is an exploded perspective view illustrating the housing of the embodiment; FIG. 5 is a perspective view illustrating the housing base of the embodiment; FIG. 6 is a cross-sectional view illustrating the coupling relationship between the anti-static rib and the avoidance groove of this embodiment; 7 is a cross-sectional view illustrating the operational relationship between the first pressing rib and the first circuit board of this embodiment; FIG. 8 is another cross-sectional view illustrating the action relationship between the first pressing rib and the first circuit board of this embodiment; 9 is a perspective view illustrating the installation relationship between the second circuit board, the third circuit board and the housing of the embodiment; 10 is a cross-sectional view illustrating the installation relationship between the second circuit board and the guide portion of the housing base of this embodiment; 11 is a cross-sectional view illustrating the operational relationship between the second pressing rib and the third circuit board of this embodiment; and FIG. 12 is another cross-sectional view illustrating the operational relationship between the second pressing rib and the third circuit board of this embodiment.

1‧‧‧Housing

10‧‧‧accommodation space

11‧‧‧Shell

111‧‧‧First support

112‧‧‧Second support

12‧‧‧Shell cover

121‧‧‧cover

121b‧‧‧Cover joint edge

121c‧‧‧Notch

122‧‧‧ First pressing rib

123‧‧‧second pressing rib

124‧‧‧Anti-static ribs

125‧‧‧Clamping piece

125a‧‧‧button hole

126‧‧‧The first cover side wall

127‧‧‧Second cover side wall

128‧‧‧ Cover connection wall

13‧‧‧Body

131‧‧‧The first side wall

131a‧‧‧ Avoidance slot

132‧‧‧Second side wall

134‧‧‧Second connecting wall

135‧‧‧seam

136‧‧‧ partition

137‧‧‧First Storage Department

138‧‧‧Second storage

139‧‧‧Limit groove

14‧‧‧First lug

141‧‧‧Guiding Department

15‧‧‧second lug

17‧‧‧Second reinforcement rib

18‧‧‧Card slot

19‧‧‧block

D‧‧‧First direction

Claims (11)

A wiring appliance includes: a shell, including a shell base and a shell cover, the shell cover and the shell base are combined to form a receiving space, the shell base has a body, a first lug and a first Two lugs, the seat body has a joint edge that is in contact with the shell cover, the first lug and the second lug extend from the base body toward the shell spaced apart from each other, protruding the seat joint edge, Moreover, the first lug has a guide portion extending in a first direction, the cover has a cover body, and the cover body has a insertion hole penetrating in the first direction to communicate the accommodating space with the outside world A first electronic module located in the accommodating space and including a first circuit board and an electrical connector provided on the first circuit board, the normal direction of the first circuit board is parallel to the first direction and The first lug and the second lug jointly support the limit, the electrical connector is corresponding to the jack for the mating connector to dock with the electrical connector through the jack; and a second electronic module , Located in the accommodating space and electrically connected to the first electronic module, and includes a second circuit board, the second circuit board is disposed perpendicular to the first circuit board and is guided and positioned by the guide portion during installation In the seat. The wiring appliance according to claim 1, wherein the base body has a limiting groove corresponding to the guide portion of the first lug, the limiting groove extending in the first direction to accommodate the second circuit One side edge of the board. The wiring appliance according to claim 1, wherein the shell base further has a first reinforcing rib connecting the first lug and the base body. The wiring appliance according to claim 3, wherein the first lug and the second lug The ear is located on the inner side of the seat engaging edge, the first reinforcing rib extends from the seat engaging edge and is connected to the outer surface of the first lug, and the shell seat further extends from the seat engaging edge and is connected to the second protrusion A second reinforcing rib on the outer surface of the ear, the cover body further has a cover engaging edge that is in contact with the seat engaging edge, and the cover engaging edge has a cooperation with the first reinforcing rib and the second reinforcing rib, respectively Of the notch. The wiring appliance according to claim 1, wherein the first lug and the second lug each have a slot, and the first circuit board has a main board portion and protrudes from each side of the main board portion toward each other in opposite directions Two protruding blocks, and the two protruding blocks are respectively stuck in the two clamping slots. The wiring appliance according to claim 1, wherein the case cover further has at least one anti-static rib, the at least one anti-static rib extends in the first direction to protrude the cover body toward the case base, the case base also There is at least one avoidance groove cooperating with the at least one anti-static rib to accommodate the at least one anti-static rib. The wiring appliance according to claim 6, wherein the cover body further has a first cover side wall, a second cover side wall, two cover connection walls and a top wall, and the first cover side wall is spaced from the second cover side wall Oppositely, the two cover connecting walls are spaced apart from each other and the four are connected to form a continuous surrounding wall. The top wall is connected to one side of the first cover side wall, the second cover side wall and the two cover connecting walls and is formed with the The socket, the at least one anti-static rib is formed on the inner surface of the first cover sidewall, the seat body further has a first seat sidewall corresponding to the first cover sidewall, and a second seat sidewall corresponding to the second cover sidewall , And a first seat connection wall and a second seat connection wall respectively corresponding to the two cover connection walls, the at least one avoidance groove is formed on the side wall of the first seat, and the second circuit board is disposed against the side wall of the first seat , The The first lug is connected to the first seat connection wall, and the second lug is connected to the second seat connection wall. The wiring appliance according to claim 7, wherein the first connecting wall has a limiting groove corresponding to the guide portion of the first lug, and the limiting groove extends in the first direction to accommodate the One side edge of the second circuit board. The wiring appliance according to claim 8, wherein the seat body further has a partition wall connecting the first seat side wall and the second seat side wall and located on the first seat connection wall and the second seat connection wall And the seat body is spaced apart from a first receiving portion adjacent to the first seat connecting wall and a second receiving portion adjacent to the second seat connecting wall, the partition wall facing the first seat connecting wall On one side of the first seat connection wall, another limiting groove is formed opposite to the limiting groove, the two limiting grooves respectively accommodate opposite sides of the second circuit board, and the second electronic mold The group is mainly accommodated in the first storage portion. The wiring appliance according to claim 9, further comprising a third electronic module, the third electronic module is electrically connected to the second electronic module and is mainly accommodated in the second accommodating portion, and includes parallel to the first A third circuit board provided on the circuit board and supported by the partition wall, the case cover further has a plurality of first pressing ribs and a plurality of second pressing ribs formed on the first cover side wall and the second cover side wall, the The first pressing ribs are used to press against the first circuit board, and the second pressing ribs extend in the first direction to protrude from the cover body to press against the third circuit board. The wiring appliance according to claim 10, wherein the first circuit board has a plurality of notches for the second pressing ribs to pass through.

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