CN109819607B

CN109819607B - Shell assembly of electronic device

Info

Publication number: CN109819607B
Application number: CN201711162235.0A
Authority: CN
Inventors: 叶国海
Original assignee: Weintek Labs Inc
Current assignee: Weintek Labs Inc
Priority date: 2017-11-21
Filing date: 2017-11-21
Publication date: 2020-10-23
Anticipated expiration: 2037-11-21
Also published as: CN109819607A

Abstract

The invention relates to a shell assembly of an electronic device, comprising: the clamping device comprises a shell, a clamping groove, a left side wall, a right side wall, a rear side wall and a backstop part, wherein the clamping groove is respectively arranged from the opening to extend inwards from the inner wall surfaces of the left side wall and the right side wall of the shell which are oppositely arranged, each clamping groove comprises a leading-in channel groove and a tabling groove, the leading-in channel groove extends from the opening to the shell, the tabling groove transversely extends from the leading-in channel groove, the rear side wall is used for connecting the left side wall and the right side wall, and the backstop part is a concave part which is arranged on the rear side wall and extends from the opening to the shell; the cover body is assembled on the rear side wall of the shell in the longitudinal leading-in direction and the transverse embedding direction, and is provided with a plurality of convex clamping parts and elastic buckling arms, and the elastic buckling arms are provided with convex operation parts; the clamping part is longitudinally inserted into the leading-in channel groove and transversely clamped and embedded in the embedding groove, so that the protruding operation part of the elastic buckling arm is abutted against the transverse end edge of the concave part until the elastic buckling arm is buckled on the backstop part, and when the protruding operation part of the elastic buckling arm is buckled on the backstop part, the protruding operation part is exposed out of the shell.

Description

Shell assembly of electronic device

Technical Field

The present disclosure relates to housing assemblies, and particularly to a housing assembly of an electronic device.

Background

A Programmable Logic Controller (PLC) is a control system applied to electronic operation, and is designed based on the principle of easy program storage and convenient expansion. Programmable logic controllers are widely used in industrial automation control applications today because they can provide sequence/position control, timing counting, input/output control, and other commands.

In the present invention, a plurality of programmable logic controllers are mounted and fixed on a frame strip, wherein each of the programmable logic controllers includes a front housing and a rear cover assembled on a rear side of the front housing, and a motherboard is disposed in an accommodation space of the front housing. The front shell is provided with a plurality of openings, the rear cover is provided with a plurality of protruding elastic clamping tenons, and the elastic clamping tenons are directly and elastically clamped in the openings so as to assemble the rear cover on the front shell. And a frame strip erecting part is arranged on the rear side surface of the rear cover body, and the programmable logic controller mounting frame is arranged on the frame strip through the frame strip erecting part.

However, although the plc can be assembled and fixed to the front housing by the aforementioned method, when the plc is mounted on the frame strip, the plc is affected by the effect of the moment, especially when the front housing is subjected to a large shock or impact, the elastic latch on the rear cover often fails to bear the moment and is broken or broken, thereby causing the plc to fall off the frame strip. In addition, when the motherboard of the plc is to be replaced, the operator must insert the linear screwdriver into the elastic latch to disengage the elastic latch from the opening and detach the rear cover from the front housing. At this time, if the operator applies an inappropriate force to the linear driver, the elastic tenon is easily broken to cause permanent failure. Therefore, the worker must replace the rear cover with a new one, which increases the manufacturing cost. Therefore, it is clear from the above that the engagement structure between the front housing and the rear cover of the plc is not extensive in design consideration, and further discussion is needed to find a feasible solution.

Disclosure of Invention

Therefore, an object of the present invention is to provide a housing assembly of an electronic device, which can effectively improve the rigidity of a fastening mechanism between a front housing and a rear cover, so as to solve the problem of breakage or fracture of an elastic latch caused by an external force, thereby achieving the purpose of reducing the manufacturing cost.

The present invention provides a housing assembly of an electronic device, in which a main board is disposed, the housing assembly comprising: the clamping device comprises a shell, a clamping device and a clamping device, wherein the shell is provided with an opening, a plurality of clamping grooves, a left side wall, a right side wall, a rear side wall and a backstop part, the clamping grooves are respectively arranged in the inner wall surfaces of the left side wall and the right side wall of the shell which are oppositely arranged from the opening and extend inwards towards the shell, each clamping groove comprises an introduction channel groove and a tabling groove, the introduction channel groove extends from the opening into the shell, the tabling groove transversely extends from the introduction channel groove, the rear side wall is used for connecting the left side wall and the right side wall, the backstop part is arranged on the rear side wall and is a concave part which extends inwards from the opening into the shell; the cover body is assembled on the rear side wall of the shell in the longitudinal leading-in direction and the transverse embedding direction, and is provided with a plurality of protruding clamping parts and elastic buckling arms, and the elastic buckling arms are provided with protruding operation parts; the clamping part is longitudinally inserted into the leading-in channel groove and transversely clamped and embedded in the embedding groove, so that the protruding operation part of the elastic buckling arm is abutted against the transverse end edge of the concave part until the elastic buckling arm is buckled with the backstop part, and when the protruding operation part of the elastic buckling arm is buckled with the backstop part, the protruding operation part is exposed out of the shell.

In an embodiment of the present invention, a housing assembly of an electronic device is provided, in which a positioning hole is formed on an inner wall surface of the housing, and a positioning tenon protrudes from the cover body, and is used for inserting into the positioning hole to position the cover body on the inner wall surface of the housing.

In an embodiment of the invention, a housing assembly of an electronic device is provided, in which a lead-in channel groove of each engaging groove is a vertical lead-in groove extending longitudinally from an opening, and an engaging groove is a horizontal engaging groove extending transversely from the lead-in channel groove, the engaging portion includes a protrusion protruding longitudinally and an engaging member protruding transversely outward from the protrusion, a length of the protrusion corresponds to a depth of the lead-in channel groove, a width of the engaging member corresponds to a width of the lead-in channel groove, and a height of the engaging member corresponds to a height of the engaging groove for sliding engagement with the engaging groove.

In an embodiment of the invention, the housing assembly of the electronic device is provided, and the engaging portion includes a reinforcing rib protruding from the protruding member.

In an embodiment of the present invention, a housing assembly of an electronic device is provided, where the left and right sides of the cover respectively have a longitudinally protruding fitting flange, and the two fitting flanges are respectively adapted to be combined with the left and right inner sidewalls of the opening.

In an embodiment of the present invention, a housing assembly of an electronic device is provided, wherein the fitting groove penetrates through the housing.

In an embodiment of the invention, the elastic buckle arm is an inverted U-shaped elastic arm, the inverted U-shaped elastic arm includes an upper elastic arm connected to the cover and extending laterally upward, a curved arm connected to the upper elastic arm and curved downward, and a lower elastic arm connected to the curved arm and extending laterally downward, and the lower elastic arm has a buckling portion correspondingly matching the stopping portion.

In an embodiment of the invention, the fastening portion includes a retaining portion and a protruding operation portion connected to the retaining portion, and the protruding operation portion and the retaining portion are clamped to form an L-shaped recess for being clamped and abutted to the retaining portion.

In an embodiment of the invention, a housing assembly of an electronic device is provided, in which the engaging portion is a rigid tenon.

In an embodiment of the invention, a housing assembly of an electronic device is provided, in which a rear side of the cover is provided with a rail mounting portion for mounting on a rail of a rack.

Through the technical means adopted by the shell assembly of the electronic device, the shell is provided with a plurality of clamping grooves and backstop parts, the cover body is provided with a plurality of convex clamping parts and elastic buckle arms, and the clamping grooves are provided with guide-in channel grooves for longitudinally guiding the clamping parts into the shell and embedding grooves for transversely clamping and embedding the clamping parts into the shell. Therefore, the plurality of clamping parts of the cover body can be clamped and positioned on the shell through the clamping grooves, and the elastic buckling arms are buckled on the stopping parts, so that the cover body is assembled and fixed on the shell. The clamping part can effectively improve the rigidity strength of the clamping mechanism between the shell and the cover body so as to solve the problem that the existing elastic clamping tenon is damaged or broken under the action of external force and further achieve the purpose of reducing the manufacturing cost.

Drawings

Fig. 1 is a perspective view illustrating a housing assembly of an electronic device according to an embodiment of the invention.

Fig. 2 is an exploded view illustrating a housing assembly of an electronic device according to an embodiment of the present invention. And

fig. 3 is a perspective view illustrating another perspective view of the cover according to the embodiment of the invention.

Wherein

100 housing assembly

10 mainboard

11 casing

111 locating hole

112 left side wall

113 right side wall

114 rear side wall

12 opening

13 clamping groove

131 introduction passage groove

132 fitting groove

14 stopping part

140 transverse end edge

141 recess

15 cover body

151 locating tenon

152 fitting flange

16 engaging part

161 projecting part

162 snap-fit

163 reinforced rib

17 elastic buckle arm

171 upper spring arm

172 bending arm

173 lower spring arm

174 fastening part

175 stopping and buckling part

176 projecting operating part

18 mounting part for slide rail

Detailed Description

Embodiments of the present invention are described below with reference to fig. 1 to 3. The description is not intended to limit the embodiments of the present invention, but is one example of the present invention.

As shown in fig. 1, fig. 2 and fig. 3, a housing assembly 100 of an electronic device according to an embodiment of the present invention, the housing assembly 100 is provided with a main board 10, the housing assembly 100 includes: a housing 11 having an opening 12, a plurality of engaging grooves 13, a left side wall 112, a right side wall 113, a rear side wall 114 and a retaining portion 14, wherein the plurality of engaging grooves 13 are respectively provided in the housing 11 from the opening 12 so as to extend from inner wall surfaces of the left side wall 112 and the right side wall 113 of the two opposing portions of the housing 11 into the housing 11, each of the engaging grooves 13 includes an introducing passage groove 131 and a fitting groove 132, the introducing passage groove 131 extends from the opening 12 into the housing 11, the fitting groove 132 extends laterally from the introducing passage groove 131, the rear side wall 114 connects the left side wall 112 and the right side wall 113, the retaining portion 14 is a recess 141 provided in the rear side wall 114 and the retaining portion 14 extends from the opening 12 into the housing 11; and the body of the cover 15, the body of the cover 15 assembles in the back of the body 11 with the direction of leading-in longitudinally (Y axle) and horizontal jogged direction (X axle), the body of the cover 15 has a plurality of engaging parts 16 and elastic buckle arms 17 protruding, the said elastic buckle arm 17 has protruding operating parts 176; the engaging portion 16 is longitudinally inserted into the introduction channel groove 131 along the longitudinal introduction direction (Y axis) and is laterally engaged with the engaging groove 132 along the lateral engaging direction (X axis), so that the protruding operation portion 176 of the elastic buckle arm 17 is abutted against the lateral end edge 140 of the concave portion 141 until the elastic buckle arm 17 is engaged with the retaining portion 14. When the protrusion operation portion 176 of the elastic buckle arm 17 is fastened to the retaining portion 14, the protrusion operation portion 176 is exposed outside the housing 11.

In the present embodiment, for convenience of description and matching with the position relationship of the housing assembly 100 actually mounted on the rack rail (not shown), the housing 11 is defined at the front, and the opposite cover 15 is defined at the back. Specifically, the cover 15 is assembled to the rear side surface of the housing 11 from the rear to the front, wherein the rear side surface of the housing 11 has an opening 12, and the left inner wall and the right inner wall of the opening 12 are respectively provided with a plurality of engaging grooves 13. Each of the engaging grooves 13 extends from the opening 12 into the housing 11 in the inner wall surface of the housing 11, and each of the engaging grooves 13 includes an introduction passage groove 131 and an engaging groove 132. The introduction channel groove 131 extends from the opening 12 into the housing 11, and the fitting groove 132 extends laterally from the introduction channel groove 131 such that an included angle is formed between the introduction channel groove 131 and the fitting groove 132. The lower side wall of the opening 12 of the housing 11 has a retaining portion 14, and the retaining portion 14 has a recess 141 extending from the opening 12 into the housing 11.

Fig. 3 is a perspective view of the cover 15 from another perspective (bottom), where the cover 15 has a plurality of engaging portions 16 protruding outward on the left and right sides, and an elastic latch arm 17 is provided on the underside of the cover 15. Specifically, referring to fig. 2 and 3, the cover 15 is inserted into the insertion channel groove 131 in the longitudinal direction (Y axis) of the engaging portion 16, and then the cover 15 is engaged with the engaging portion 16 in the transverse direction (X axis) of the engaging groove 132. At the same time, the elastic buckle arm 17 is transversely buckled with the retaining part 14 through the concave part 141, so as to assemble and fix the cover 15 on the rear side of the shell 11. It can be understood that since the engaging portion 16 is an engaging member having a rigid strength, the engaging groove 13 needs to have a design of the introduction passage groove 131 and the engaging groove 132 so that the engaging portion 16 is inserted into the housing 11 to be engaged with the housing. In the present embodiment, the engaging portion 16 is a rigid tenon to provide sufficient rigidity to be engaged with the engaging groove 132 of the housing 11, so that the engaging portion 16 is not easily damaged or broken when being subjected to an external force.

It is understood that, in the present embodiment, in order to conveniently assemble the cover 15 to the housing 11, the introduction channel groove 131 of each engaging groove 13 is a vertical introduction groove extending longitudinally from the opening 12, and the engaging groove 132 is a horizontal engaging groove extending transversely from the introduction channel groove 131, which is advantageous for assembling the actual product during manufacturing. Similarly, the engaging portion 16 corresponding to the engaging groove 13 also includes a protrusion 161 protruding longitudinally and an engaging insert 162 protruding laterally outward from the protrusion 161, wherein the length of the protrusion 161 corresponds to the depth of the guiding channel 131, the width of the engaging insert 162 corresponds to the width of the guiding channel 131, and the height of the engaging insert 162 corresponds to the height of the engaging groove 132, so that the engaging insert 162 slides into the engaging groove 132. It can be understood that, if the fitting groove 132 penetrates the housing 11, the engaging piece 162 can be seen through the fitting groove 132 from the outside of the housing 11, so as to confirm whether the cover 15 is engaged and positioned completely.

It should be noted that the introduction passage groove 131 and the fitting groove 132 of the engaging groove 13 are a vertical introduction groove extending vertically in the longitudinal direction from the opening 12 and a horizontal fitting groove extending horizontally in the lateral direction from the introduction passage groove 131. However, the introduction channel groove 131 and the fitting groove 132 may be designed to extend in the longitudinal direction and in the lateral direction with a slope. In other words, the extending directions of the introduction channel groove 131 and the fitting groove 132 are not parallel to the Y-axis direction and the X-axis direction, respectively, but have an inclination angle with respect to the Y-axis direction and the X-axis direction. Similarly, the plurality of engaging portions 16 of the cover 15 are inserted into the insertion channel groove 131 in the longitudinal direction and are engaged with the engaging grooves 132 in the lateral direction, and the longitudinal direction and the lateral direction are not parallel to the Y axis direction and the X axis direction, respectively. In other words, the longitudinal introduction direction and the lateral fitting direction are also inclined at an angle with respect to the Y-axis direction and the X-axis direction. Therefore, the present invention is not limited to the case where the longitudinal introduction direction and the lateral fitting direction are the vertical direction and the horizontal direction.

In addition, referring to fig. 2 and fig. 3, in the present embodiment, in order to make the positioning between the housing 11 and the cover 15 more stable, a positioning hole 111 is further disposed on the upper inner wall surface of the housing 11, a positioning tenon 151 is protruded on the upper side of the cover 15, and the positioning tenon 151 is used for inserting the positioning hole 111 to position the cover 15 on the upper inner wall surface of the housing 11. Furthermore, the fastening portion 16 of the cover 15 further includes a reinforcing rib 163, and the reinforcing rib 163 protrudes from the protruding member 161 and is connected to the cover 15, so as to provide sufficient rigidity for the protruding member 161, and the protruding member 161 is not easily damaged or broken when being subjected to an external force. In addition, the left and right sides of the cover 15 are respectively provided with a longitudinally protruding fitting flange 152, and the two fitting flanges 152 are respectively adapted to be combined with the left inner side wall and the right inner side wall of the opening 12 of the housing 11, so that the fitting structure between the cover 15 and the housing 11 is more stable. It is understood that the fitting flange 152 is connected to the boss member 161, so that the rigidity mechanism of the boss member 161 is further strengthened.

Referring to fig. 1 to 3, in the present embodiment, the elastic buckle arm 17 is an inverted U-shaped elastic arm, and the inverted U-shaped elastic arm includes an upper elastic arm 171 connected to the cover 15 and extending upward and laterally, a curved arm 172 connected to the upper elastic arm 171 and curved downward, and a lower elastic arm 173 connected to the curved arm 172 and extending downward and laterally, and the lower elastic arm 173 has a buckle portion 174 corresponding to the retaining portion 14. The engaging portion 174 includes a retaining portion 175 and a protruding portion 176 connected to the retaining portion 175, the protruding portion 176 and the retaining portion 175 are clamped to form an L-shaped recess, and the L-shaped recess is engaged with the retaining portion 14. When the user wants to detach the cover 15 from the housing 11, the user presses the protruding operation portion 176 with his/her finger to move the lower spring arm 173 toward the upper spring arm 171, so that the L-shaped recess is disengaged from the retaining portion 14. Then, the engaging portions 16 of the cover 15 are separated from the engaging grooves 132 in the transverse direction against the transverse engaging direction and separated from the introducing channel grooves 131 in the longitudinal introducing direction against the longitudinal introducing direction, so that the cover 15 is separated from the housing 11.

In the present embodiment, the housing assembly 100 of the electronic device is a programmable logic controller applied in an automation apparatus, and is mounted and fixed on a rack rail (not shown) of the automation apparatus. Therefore, the rear side surface of the cover 15 is provided with a rail mounting portion 18, and the rail mounting portion 18 is mounted on the rack rail. Since the rail mounting portion 18 of the cover 15 is used to bear the weight of the housing assembly 100 of the electronic device and the main board 10 or other electronic components disposed therein, the cover 15 connected to the rail mounting portion 18 also has to bear a large weight burden on the housing 11. In other words, the plurality of engaging portions 16 provided on the cover 15 and engaged with the housing 11 must have a certain rigidity so that the engaging portions 16 are not easily broken or broken by gravity.

It should be noted that directional terms such as "front", "rear", "upper" and "lower" are used herein for convenience of description, and they only indicate relative positional relationships, not absolute spatial positions. For example, the directional terms "front" and "upper" refer to the opposite direction as "rear" and "lower".

With the above structure, the housing 11 is formed with a plurality of engaging grooves 13 and retaining portions 14, the cover 15 is provided with a plurality of protruding engaging portions 16 and elastic snap arms 17, and the engaging grooves 13 have an introduction passage groove 131 for longitudinally introducing the engaging portions 16 into the housing 11 and an engaging groove 132 for laterally engaging and engaging the engaging portions 16 in the housing 11. Therefore, the plurality of engaging portions 16 of the cover 15 can be engaged and positioned on the housing 11 through the engaging grooves 13, and the elastic buckling arms 17 are buckled with the retaining portions 14, so as to assemble and fix the cover 15 on the housing 11. The engaging portion 16 can effectively improve the rigidity of the engaging mechanism between the housing 11 and the cover 15, and the problem of breakage or fracture of the engaging portion 16 due to external force is not easily caused, thereby achieving the purpose of reducing the manufacturing cost.

While the foregoing description and description are of the preferred embodiment of the present invention, other modifications of the invention shall be apparent to those skilled in the art from the foregoing description and claims, and it is intended that such modifications shall fall within the spirit and scope of the invention.

Claims

1. A housing assembly for an electronic device, said housing assembly having a motherboard disposed therein, said housing assembly comprising:

a housing having an opening, a plurality of engaging grooves, a left side wall, a right side wall, a rear side wall and a retaining portion, wherein the plurality of engaging grooves are respectively formed in the inner wall surfaces of the left side wall and the right side wall of the housing, which are oppositely arranged, of the housing from the opening and extend inward toward the housing, each engaging groove includes an introducing channel groove and an engaging groove, the introducing channel groove extends from the opening into the housing, the engaging groove extends laterally from the introducing channel groove, the rear side wall is a recess portion which connects the left side wall and the right side wall, and the retaining portion is a recess portion which is formed in the rear side wall and extends from the opening into the housing; and

the cover body is assembled on the rear side wall of the shell in the longitudinal leading-in direction and the transverse embedding direction, and is provided with a plurality of protruding clamping parts and elastic buckling arms, and the elastic buckling arms are provided with protruding operation parts;

the clamping part is longitudinally inserted into the guide channel groove and transversely clamped and embedded in the embedding groove, so that the protruding operation part of the elastic buckling arm is abutted against the transverse end edge of the concave part until the elastic buckling arm is buckled with the backstop part, and when the protruding operation part of the elastic buckling arm is buckled with the backstop part, the protruding operation part is exposed out of the shell.

2. The casing assembly of the electronic device as claimed in claim 1, wherein the inner wall surface of the casing is provided with positioning holes, the cover body protrudes with positioning tenons, and the positioning tenons are used for inserting the positioning holes so as to position the cover body on the inner wall surface of the casing.

3. The housing assembly of an electronic device as claimed in claim 1, wherein the guiding channel groove of each engaging groove is a vertical guiding groove extending longitudinally from the opening, the engaging groove is a horizontal engaging groove extending transversely from the guiding channel groove, the engaging portion includes a protrusion protruding longitudinally and an engaging member protruding transversely outward from the protrusion, the protrusion has a length corresponding to the depth of the guiding channel groove, the engaging member has a width corresponding to the width of the guiding channel groove, and the engaging member has a height corresponding to the height of the engaging groove for sliding engagement with the engaging groove.

4. A housing assembly according to claim 3, wherein said engaging portion comprises a reinforcing rib projecting away from said protruding member.

5. The housing assembly of an electronic device as claimed in claim 1, wherein the cover has engaging flanges protruding longitudinally on left and right sides thereof, and the engaging flanges are adapted to be combined with left and right inner sidewalls of the opening.

6. A housing assembly for an electronic device according to claim 1, wherein said fitting groove extends outwardly through said housing.

7. The housing assembly of claim 1, wherein the resilient latch is an inverted U-shaped resilient arm, the inverted U-shaped resilient arm comprises an upper resilient arm connected to the cover and extending laterally upward, a curved arm connected to the upper resilient arm and curved downward, and a lower resilient arm connected to the curved arm and extending laterally downward, the lower resilient arm having a latch portion corresponding to the retaining portion.

8. The casing assembly of claim 7, wherein the engaging portion comprises a retaining engaging portion and a protruding operating portion connected to the retaining engaging portion, and the protruding operating portion and the retaining engaging portion are clamped to form an L-shaped recess for engaging with the retaining portion.

9. A housing assembly for an electronic device as recited in claim 1, wherein said engaging portion is a rigid latch.

10. The housing assembly of claim 1, wherein a rail mounting portion is disposed on a rear side of the cover for mounting on a rail of a rack.