CN109819607B - Shell assembly of electronic device - Google Patents

Abstract

The present invention relates to a shell component of an electronic device, comprising: a shell having an opening, a plurality of engaging grooves, a left side wall, a right side wall, a rear side wall and a stopper, wherein the plurality of engaging grooves are respectively extended from the opening to the inner wall surface of the left side wall and the inner wall surface of the right side wall of the shell that are arranged opposite to each other, and each engaging groove includes an introduction channel groove and an embedding groove, wherein the introduction channel groove extends from the opening into the shell, and the embedding groove extends laterally from the introduction channel groove, the rear side wall is connected to the left side wall and the right side wall, and the stopper is arranged on the rear side wall and stops The retreat portion is a recess extending from the opening into the shell; and a cover body, which is assembled on the rear side wall of the shell in the longitudinal introduction direction and the lateral engagement direction, and the cover body has a plurality of protruding snap-fit portions and an elastic snap arm, and the elastic snap arm has a protruding operating portion; wherein the snap-fit portion is longitudinally inserted into the introduction channel groove and laterally engaged in the engaging groove, so that the protruding operating portion of the elastic snap arm abuts against the lateral end edge of the recess until the elastic snap arm is engaged with the retreat-stopping portion, and when the protruding operating portion of the elastic snap arm is engaged with the retreat-stopping portion, the protruding operating portion is exposed outside the shell.

Description

Housing components for electronic devices

technical field

The present invention relates to a casing assembly, in particular to a casing assembly of an electronic device.

Background technique

A Programmable Logic Controller (PLC) is a control system applied to electronic operations. It is designed based on the principles of simple stored programs and convenient expansion. Programmable logic controllers are widely used in the field of industrial automation control because they can provide instructions such as sequence/position control, timing counting, and input/output control.

Nowadays, a plurality of programmable logic controllers often used in the automation industry are mainly implemented by being installed and fixed on a frame, wherein each programmable logic controller includes a front casing and is assembled in the front casing. The rear cover body on the rear side of the body is provided with a main board in the accommodating space of the front casing. The front case is provided with a plurality of openings, and the rear cover is provided with a plurality of protruding elastic tenons, which are directly elastically clamped to the openings through the elastic tenons to achieve the The body is assembled on the front casing. And the rear side of the rear cover body is provided with a frame bar erection part, through which the programmable logic controller is installed and erected on the frame bar.

However, although the programmable logic controller can use the aforementioned method to assemble and fix the rear cover on the front casing, when the programmable logic controller is erected on the frame, due to the effect of torque, especially When the front case is subjected to a large vibration or impact external force, the elastic tenon on the rear cover is often damaged or broken because it cannot withstand the torque, which in turn causes the programmable logic controller to fall off the frame. falling problem. In addition, when replacing the mainboard in the programmable logic controller, the operator must insert a flat-blade screwdriver into the elastic tenon, so that the elastic tenon is separated from the opening and the back cover is removed from the front case. Remove it. At this time, if the force applied by the operator to the flat-blade screwdriver is not appropriate, the elastic tenon will easily break and cause permanent failure. Therefore, the operator must replace the rear cover with a new one, which increases the manufacturing cost. Therefore, it can be seen from the above that the design consideration of the engaging structure between the front case and the rear cover of the programmable logic controller is not fully considered, so it needs to be further reviewed and a feasible solution is sought.

SUMMARY OF THE INVENTION

Therefore, the purpose of the present invention is to provide a casing assembly of an electronic device, which can effectively improve the rigidity of the engaging mechanism between the front casing and the rear cover, so as to solve the problem of damage or breakage of the elastic tenon caused by external force. , and then achieve the purpose of reducing manufacturing costs.

The technical means adopted by the present invention to solve the problems of the prior art provide a casing assembly of an electronic device, wherein a main board is arranged in the casing assembly, and the casing assembly includes: a casing having an opening and a plurality of engaging grooves a groove, a left side wall, a right side wall, a rear side wall and a backstop part, a plurality of the engaging grooves are respectively from the opening and inside the two oppositely arranged left side walls of the casing The wall surface and the inner wall of the right side wall face the inside of the casing, each of the engaging grooves includes an introduction channel groove and a fitting groove, the introduction channel groove extends from the opening to the inside of the casing, and the fitting groove extends from the opening The introduction channel groove extends laterally, the rear side wall is connected to the left side wall and the right side wall, and the backstop portion is provided on the rear sidewall and the backstop portion a concave portion extending from the opening into the casing; and a cover body, the cover body is assembled to the rear side wall of the casing in the longitudinal introduction direction and the transverse fitting direction, and the cover body has a plurality of protruding cards A joint portion and an elastic buckle arm, wherein the elastic buckle arm has a protruding operation portion; wherein, the engaging portion is longitudinally inserted into the introduction channel groove and laterally engaged in the fitting groove, so that the elastic buckle arm is The protruding operation part is pressed against the lateral end edge of the recess until the elastic buckle arm is buckled with the stop part, and the protruding operation part of the elastic buckle arm is buckled. When combined with the backstop portion, the protruding operation portion is exposed outside the casing.

An embodiment of the present invention provides a casing assembly of an electronic device, the inner wall of the casing is provided with a positioning hole, the cover body protrudes with a positioning tenon, and the positioning tenon is used for inserting the positioning hole, in order to position the cover body on the inner wall surface of the casing.

An embodiment of the present invention provides a housing assembly of an electronic device. The introduction channel groove of each engaging groove is a vertical introduction groove extending longitudinally from the opening, and the engaging groove is a horizontal extending laterally from the introduction channel groove. an engaging groove, the engaging portion includes a longitudinally protruding protruding piece and a snap-inserting piece protruding laterally outward from the protruding piece, the length of the protruding piece is equivalent to the depth of the introduction channel groove, the snap-inserting piece The width of the piece corresponds to the width of the introduction channel groove, and the height of the card insert corresponds to the height of the fitting groove, so that the slide-in card can be fitted into the fitting groove.

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

An embodiment of the present invention provides a housing assembly for an electronic device. The left and right sides of the cover are respectively provided with longitudinally protruding fitting flanges, and the two fitting flanges are respectively adapted to be assembled on the The left inner side wall and the right inner side wall of the opening.

In an embodiment of the present invention, a casing assembly of an electronic device is provided, and the fitting groove penetrates the casing outwardly.

In an embodiment of the present invention, a housing assembly of an electronic device is provided. The elastic buckle arm is an inverted U-shaped elastic arm, and the inverted U-shaped elastic arm includes an upper elastic arm connected to the cover body and extending laterally upward, A bending arm connected to the upper elastic arm and bent downward and a lower elastic arm connected to the bending arm and extending laterally downward, the lower elastic arm has a buckling portion corresponding to the backstop portion.

In an embodiment of the present invention, a housing assembly of an electronic device is provided. The buckle portion includes a back-stop and abutment portion and the protruding operation portion connected to the back-stop and abutment portion. The protrusion operates The L-shaped concave portion is sandwiched between the part and the back-stop and abutting portion, and is snap-fitted against the back-stop portion.

In an embodiment of the present invention, a housing component of an electronic device is provided, and the engaging portion is a rigid tenon.

In an embodiment of the present invention, a housing assembly of an electronic device is provided. The rear side of the cover is provided with a slide rail mounting portion, and the slide rail mounting portion is used for mounting on a rack slide rail.

Through the technical means adopted in the casing assembly of the electronic device of the present invention, the casing has a plurality of engaging grooves and a backstop portion, and the cover body has a plurality of engaging portions and elastic buckle arms protruding The engaging groove has an introduction channel groove for the engaging portion to be longitudinally guided into the casing, and a fitting groove for the engaging portion to be laterally engaged in the casing. Therefore, the plurality of engaging portions of the cover body can be snap-fitted and positioned on the casing through the engaging grooves, and the elastic locking arms are engaged with the backstop portion, so that the cover body is assembled and fixed on the casing. The engaging portion can effectively improve the rigidity of the engaging mechanism between the casing and the cover, so as to solve the problem of breakage or breakage of the existing elastic tenon caused by external force, thereby achieving the purpose of reducing the manufacturing cost.

Description of drawings

FIG. 1 is a schematic perspective view showing a housing component of an electronic device according to an embodiment of the present invention.

FIG. 2 is an exploded schematic view showing a housing assembly of an electronic device according to an embodiment of the present invention. as well as

FIG. 3 is a perspective view showing a cover body according to an embodiment of the present invention from another perspective.

in

100 Housing Assembly

10 Motherboard

11 Housing

111 Locating hole

112 Left side wall

113 Right side wall

114 Rear side wall

12 openings

13 Engagement groove

131 Introductory channel slot

132 Fitting groove

14 Backstop

140 Lateral edge

141 Recess

15 cover

151 Positioning tenon

152 Fitting flange

16 Engagement part

161 Raised pieces

162 Card Inserts

163 Reinforced ribs

17 Elastic buckle arm

171 Spring Arm

172 Bend Arm

173 Drop Arm

174 Buckle

175 Deduction and deduction department

176 Protruding operation part

18 Slide rail erection department

Detailed ways

Embodiments of the present invention will be described below with reference to FIGS. 1 to 3 . This description is not intended to limit the embodiments of the present invention, but is one of the embodiments of the present invention.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , according to 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 , and the housing assembly 100 includes a housing 11 having a The opening 12 , a plurality of engaging grooves 13 , the left side wall 112 , the right side wall 113 , the rear side wall 114 and the backstop 14 , the plurality of the engaging grooves 13 are respectively from the opening 12 to the casing The inner wall surface of the left side wall 112 and the inner wall of the right side wall 113 of the two oppositely arranged facing the inside of the housing 11 are extended and arranged, and each of the engaging grooves 13 includes an introduction channel groove 131 and A fitting groove 132, the introduction channel groove 131 extends from the opening 12 into the housing 11, the fitting groove 132 extends laterally from the introduction channel groove 131, and the rear side wall 114 is connected to the left side wall 114. For the side wall 112 and the right side wall 113 , the backstop 14 is provided on the rear sidewall 114 and the backstop 14 is a recess extending from the opening 12 into the housing 11 141; and a cover body 15, the cover body 15 is assembled on the rear side of the housing 11 in the longitudinal introduction direction (Y axis) and the lateral fitting direction (X axis), and the cover body 15 has a plurality of protruding cards. The engaging portion 16 and the elastic locking arm 17, the elastic locking arm 17 has a protruding operating portion 176; wherein, the engaging portion 16 is longitudinally inserted into the introduction channel groove 131 along the longitudinal introduction direction (Y axis), And along the lateral fitting direction (X axis), it is laterally engaged with the fitting groove 132 , so that the protruding operating portion 176 of the elastic locking arm 17 abuts against the lateral end of the concave portion 141 . The edge 140 is fastened to the stop portion 14 until the elastic locking arm 17 is fastened. When the protruding operating portion 176 of the elastic locking arm 17 is fastened to the backstop portion 14 , the protruding operating portion 176 is exposed outside the casing 11 .

In this embodiment, for the convenience of description and to match the positional relationship of the housing assembly 100 actually erected on the rack slide rails (not shown), the housing 11 is defined as the front, and the cover 15 is defined at the rear. . Specifically, the cover body 15 is assembled on the rear side of the casing 11 from the rear to the front, wherein the rear side of the casing 11 has an opening 12 , and the left inner side wall and the right inner side wall of the opening 12 are respectively provided with a plurality of The engaging groove 13 . Each engaging groove 13 extends from the opening 12 on the inner wall of the casing 11 facing the inside of the casing 11 , wherein each engaging groove 13 includes an introduction channel groove 131 and a fitting 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 , so that an included angle is formed between the introduction channel groove 131 and the fitting groove 132 . In addition, the lower side wall of the opening 12 of the housing 11 has a backstop 14 , and the backstop 14 has a recess 141 extending from the opening 12 into the housing 11 .

3 is a three-dimensional schematic diagram of the cover body 15 from another perspective (bottom), the left and right sides of the cover body 15 respectively have a plurality of engaging portions 16 protruding outward, and the lower side of the cover body 15 has elastic buckle arms 17. In detail, please refer to FIG. 2 and FIG. 3 at the same time, the cover body 15 firstly inserts the engaging portion 16 into the introduction channel groove 131 longitudinally in the longitudinal introduction direction (Y-axis), and then the cover body 15 is inserted in the transverse insertion direction ( X axis) the engaging portion 16 is laterally engaged in the engaging groove 132 . At the same time, the elastic locking arm 17 will transversely pass through the concave portion 141 to be fastened to the stop portion 14 , so that the cover body 15 is assembled and fixed to the rear side of the housing 11 . It can be understood that the engaging portion 16 is an engaging member with rigidity and strength, so the engaging groove 13 must have the design of an introduction channel groove 131 and a fitting groove 132, so that the engaging portion 16 can be inserted into the engaging groove. in the housing 11 . In this embodiment, the engaging portion 16 is a rigid tenon to provide sufficient rigidity to fit into the engaging groove 132 of the housing 11 , so that the engaging portion 16 is not easily damaged or damaged when subjected to external force. fracture problem.

It can be understood that, in this embodiment, in order to assemble the cover body 15 on the housing 11 conveniently, the introduction channel groove 131 of each engaging groove 13 is a vertical introduction groove extending longitudinally from the opening 12 , and The fitting groove 132 is a horizontal fitting groove extending laterally from the introduction channel groove 131 , and such a design is beneficial to the assembling operation of the actual product during manufacture. Similarly, the engaging portion 16 corresponding to the engaging groove 13 also includes a protruding piece 161 protruding longitudinally and an inserting piece 162 protruding laterally outward from the protruding piece 161 . The length corresponds to the depth of the introduction channel groove 131, the width of the card insert 162 corresponds to the width of the introduction channel groove 131, and the height of the card insert 162 corresponds to the height of the fitting groove 132, so that the card insert 162 slides into the card Fitted in the fitting groove 132 . It can be understood that if the fitting groove 132 penetrates the casing 11 outward, the inserting member 162 can be seen from the outside of the casing 11 through the fitting groove 132 , so as to confirm whether the cover body 15 has been fitted and positioned.

It is worth mentioning that the introduction channel groove 131 and the fitting groove 132 of the engaging groove 13 are vertical introduction grooves extending vertically from the opening 12 longitudinally and horizontal fitting grooves extending laterally and horizontally from the introduction channel groove 131 . However, it is not limited to this, and the introduction channel groove 131 and the fitting groove 132 can also be designed to have a slanted longitudinal extension and a transverse extension. 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 inclined angle with respect to the Y-axis direction and the X-axis direction. Similarly, the plurality of engaging portions 16 of the cover body 15 are inserted into the introduction channel groove 131 in the longitudinal introduction direction, and are laterally engaged with the fitting groove 132 in the lateral fitting direction. At this time, the longitudinal introduction direction and the lateral fitting direction are Nor are they parallel to the Y-axis direction and the X-axis direction, respectively. In other words, the longitudinal introduction direction and the lateral fitting direction also have an inclination angle with respect to the Y-axis direction and the X-axis direction. Therefore, the present invention does not limit the vertical direction and the horizontal fitting direction to be the vertical direction and the horizontal direction.

In addition, please refer to FIG. 2 and FIG. 3 at the same time, in this embodiment, in order to make the positioning between the casing 11 and the cover body 15 more stable, a positioning hole 111 is further provided on the upper inner wall surface of the casing 11 . A positioning tenon 151 protrudes from the upper side of the cover body 15 , and the positioning tenon 151 is used for inserting the positioning hole 111 to position the cover body 15 on the upper inner wall surface of the casing 11 . Furthermore, the engaging portion 16 of the cover body 15 further includes a reinforcing protruding rib 163 . The reinforcing protruding rib 163 protrudes away from the protruding piece 161 and is connected to the cover body 15 to provide the protruding piece 161 with sufficient rigidity. The strength of the mechanism makes it difficult for the protruding member 161 to be damaged or broken when subjected to external force. In addition, the left and right sides of the cover body 15 are respectively provided with a longitudinally protruding fitting flange 152 , and the two fitting flanges 152 are respectively adapted to fit the left inner side wall and the right inner side wall of the opening 12 of the casing 11 . , so that the fitting structure between the cover body 15 and the casing 11 is more stable. It can be understood that the fitting flange 152 is connected to the protruding piece 161 , so that the rigidity of the protruding piece 161 is strengthened.

Please refer to FIGS. 1 to 3 at the same time. In this 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 body 15 and extending laterally upward. , a bending arm 172 connected to the upper elastic arm 171 and bent downward, and a lower elastic arm 173 connected to the bending arm 172 and extending laterally downward. The buckle portion 174 includes a backstop portion 175 and a protruding operation portion 176 connected to the backstop portion 175. The protruding operation portion 176 and the backstop portion 175 are sandwiched to form an L-shaped concave portion. The L-shaped concave portion is abutted against the backstop portion 14 by a snap. When the user wants to disassemble the cover body 15 from the housing 11 , the user first presses the protruding operating portion 176 with his fingers to make the lower spring arm 173 approach the upper spring arm 171 , so that the L-shaped recess is removed from the stop portion 14 . break away. Next, the plurality of engaging portions 16 of the cover body 15 are laterally disengaged from the fitting grooves 132 opposite to the lateral inserting direction, and disengaged from the introduction channel grooves 131 opposite to the longitudinal introduction direction, so that the cover body 15 detached from the housing 11 .

In this embodiment, the housing assembly 100 of the electronic device is a programmable logic controller used in an automation equipment, which is installed and fixed on a rack rail (not shown) of the automation equipment. Therefore, the rear side of the cover body 15 is provided with a slide rail mounting portion 18 , and the slide rail mounting portion 18 is used to be mounted on the rack slide rail. Since the slide rail mounting portion 18 of the cover body 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 body 15 connected to the slide rail mounting portion 18 is relatively opposite to the housing The body 11 must also bear a large weight load. In other words, the plurality of engaging portions 16 provided on the cover body 15 and used for engaging with the casing 11 must have a certain rigidity, so that the engaging portions 16 are not easily damaged or broken when subjected to gravity. question.

It is worth mentioning that those skilled in the art can understand that in this specification, for the convenience of description, azimuth terms such as "front", "rear", "upper" and "lower" are used, which only represent relative positional relationships , rather than an absolute spatial position. For example, where the directional terms "front" and "upper" refer to the opposite direction to "rear" and "lower".

Through the above structure, by forming a plurality of engaging grooves 13 and a backstop 14 on the casing 11 , a plurality of engaging portions 16 and elastic locking arms 17 are protruded on the cover 15 . The engaging grooves 13 has an introduction channel groove 131 for guiding the engaging portion 16 into the casing 11 longitudinally, and a fitting groove 132 for laterally engaging the engaging portion 16 in the casing 11 . Therefore, the plurality of engaging portions 16 of the cover body 15 can be locked and positioned on the housing 11 through the engaging grooves 13 , and the elastic locking arms 17 can be engaged with the backstop portion 14 , so that the cover body 15 can be assembled and fixed. 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 external force will not easily cause the engaging portion 16 to be damaged or broken, thereby reducing manufacturing costs.

The above description and description are only the description of the preferred embodiments of the present invention, and those skilled in the art can make other modifications according to the above-defined claims and the above description, but these modifications should still be the invention of the present invention within the scope of the rights of the present invention.

Claims (10)

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.

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