CN103442535A - Module meter case - Google Patents
Module meter case Download PDFInfo
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- CN103442535A CN103442535A CN2013103759279A CN201310375927A CN103442535A CN 103442535 A CN103442535 A CN 103442535A CN 2013103759279 A CN2013103759279 A CN 2013103759279A CN 201310375927 A CN201310375927 A CN 201310375927A CN 103442535 A CN103442535 A CN 103442535A
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- cover plate
- meter case
- module meter
- deck
- alignment pin
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Abstract
The invention discloses a module meter case. Many aspects are improved on the basis of an existing module meter case. Firstly, the inner surface of a cover plate is provided with a clamping base used for fixation in the front and back direction and the vertical direction, and the inner surface of a body is provided with a clamping part matched with the clamping base. The cover plate and the body are fixed in the front and back direction and the vertical direction, and therefore connection between the cover plate and the body is firmer. Meanwhile, a locating pin and a locating groove are additionally arranged, the diameter of the root portion of the locating pin is large for obtaining the interference fit, and therefore the combination force between the cover plate and the body in the left and right direction is further increased. A concealed button of the existing module meter case bends easily in the use process, while a supporting part is additionally arranged on the root portion of the module meter case to reduce bending. The cover plate and the body are the same in area, so that the connection seam between the cover plate and the body is not located on the left side face and the right side face, and the cover plate and the body after being connected are firmer and do not deform easily. A reinforcing rib arranged on the inner surface of the body also has the same effect of improving the strength of the body and also has the effect of fixing a circuit board installed in the body.
Description
Technical field
The present invention relates to a kind of module meter case, belong to explosion-proof instrument field.
Background technology
The module meter case is applied in the design of intrinsic safe explosion-proof system, it is to be installed on harbor and to contain intrinsically safe circuit and the device of non-intrinsically safe circuit, limited by current limliting and pressure limiting circuit the energy that is sent to on-the-spot intrinsic safety loop in circuit, thereby the dangerous energy that prevents non-intrinsically safe circuit seals in intrinsically safe circuit, it is the important component part of the essence safety system.The module meter case has intrinsic safety side signal end, non-intrinsic safety side signal end, signal processing circuit and four parts of power circuit.
Because the module meter case is applicable in hazardous environment higher to its integrally-built stability requirement more.The shell of existing module meter case is the two-piece type structure, relies on the hidden discount that is positioned at edge that cover plate and body are buckled into to a shell integral body.Because tie point all is positioned at the edge of cover plate and body, so the formed module meter case of this structure shell insecure, especially when opening panel, more fragile.Why insecure the shell of existing module meter case is, is because hidden discount can only be fixed in one direction, fixing on the pressing direction of cover plate and body, and unfixing in the other direction.Simultaneously, engage rear surface between the cover plate of existing module meter case and body and still have gap, easily attract dust or leak, be unfavorable for the protection to internal circuit board.
Summary of the invention
Goal of the invention: the present invention proposes a kind of module meter case, and its cover plate and body all fixedly secure on all directions.
Technical scheme: the technical solution used in the present invention is a kind of module meter case, and described cover inner surface is provided with at front and back and the fixing deck of above-below direction, and described body internal surface is provided with the holding section suitable with deck.When cover plate and body pressing, holding section embeds in deck.
As a modification of the present invention, described cover plate equates with this bulk area and align in edge.When cover plate and body pressing, both seams are located in side, four of upper and lower front and back, and are less than body unlike prior art cover plate area like this, and seam is positioned at left and right side.Because the area of two sides, left and right is large, deformation the most easily occurs, so cover plate and body after side makes to engage without seam are firmer.
As another improvement of the present invention, described cover inner surface also is provided with the alignment pin for location, and described body internal surface is provided with the location notch suitable with alignment pin.Described alignment pin is increased gradually by end to root diameter (RD).Location during for the ease of cover plate and body pressing, be provided with alignment pin and location notch, and after pressing, alignment pin inserts in location notch.In order to make the module meter case more firm, the diameter of alignment pin increases gradually, when pressing, when alignment pin approaches the location notch bottom, can produce interference fit like this, increases cover plate and the engaging force of body on left and right directions.
As another improvement of the present invention, also comprise the hidden discount that is positioned at cover inner surface, described hidden discount root is provided with support portion.Hidden discount is to connect the mechanism of cover plate and body in existing module meter case, and hidden discount has certain elasticity, can be towards its protuberance rightabout bending, and this design is for the ease of installation and removal.But, in use due to vibration, the hidden discount deformation that also can bend, make the seam between cover plate and body enlarge.So the deformation of the present invention when the hidden discount root arranges this support portion and reduces to use.
As of the present invention, further improve, described deck is comprised of two intermediate plates that extend in the same way.Describedly for the deck fixing at fore-and-aft direction, be arranged on edge, cover plate front, for the deck fixing at above-below direction, be arranged on upper and lower two edges of cover plate.
As of the present invention, further improve, described body internal surface also is provided with reinforcement.This reinforcement shape and this circuit board shape are complementary.The shell of module meter case is formed by cover plate and body pressing, and cover plate and body are all plastic materials.This material has certain pliability, flexible distortion.In order to make module meter case shell not yielding, in body internal surface, be provided with reinforcement.The shape of this reinforcement and circuit board shape are complementary simultaneously, when being arranged in body by circuit board, can also play the effect of fixing circuit board.
Beneficial effect: the present invention has done multinomial improvement on the basis of existing module meter case.At first at cover inner surface, be provided with at front and back and the fixing deck of above-below direction, body internal surface is provided with the holding section suitable with deck.Before and after having increased between cover board body and the fixing of above-below direction, make connection between the two more firm.Simultaneously set up again alignment pin and location notch, and the alignment pin root diameter (RD) more slightly obtains interference fit, further increased the engaging force of left and right directions between cover plate and body.Flexible when the hidden discount of existing module meter case is used, the present invention reduces this bending in its root extension supporting section.Cover plate is identical with the area of body, makes not two sides in left and right of seam between the two, has increased that cover plate after engaging and body are more firm is difficult for deformation.The reinforcement of body internal surface setting has played the effect that improves body intensity too, but it also has the effect that is fixedly mounted on intrinsic circuit board.
The accompanying drawing explanation
Fig. 1 is orientation of the present invention schematic diagram;
The structural representation that Fig. 2 is body of the present invention;
The structural representation that Fig. 3 is cover plate of the present invention;
Fig. 4 is alignment pin distribution schematic diagram of the present invention;
Fig. 5 is location notch distribution schematic diagram of the present invention;
The shape schematic diagram that Fig. 6 is alignment pin of the present invention;
Fig. 7 is deck distribution schematic diagram of the present invention;
Fig. 8 is distribution schematic diagram in holding section of the present invention;
The structural representation that Fig. 9 is deck of the present invention;
The distribution schematic diagram that Figure 10 is hidden discount of the present invention;
The structural representation that Figure 11 is hidden discount of the present invention;
The structural representation that Figure 12 is reinforcement of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiment only is not used in and limits the scope of the invention for the present invention is described, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of various equivalents of the present invention.
Alleged in claims, specification and Figure of description " front ", " ”,“ front, front side " are as shown in fig. 1 near one side of baffle plate 3.Alleged " on ", " upside ", " top " be also as shown in Fig. 1 Chinese word arrow.Alleged " left side ", " left side ", " left side " refer to the direction that Fig. 1 is outside perpendicular to paper.
As shown in Figures 2 and 3, the shell of module meter case is comprised of body 1 and cover plate 2.Body 1 and cover plate 2 inboards are provided with a plurality of fixed connecting parts.After body 1 and cover plate 2 pressings, these fixed connecting parts firmly link together both, form the shell of module instrument.Also be provided with the baffle plate 3 that upwards rotates folding at shell front side.
Body 1 and cover plate 2 contour shapes in the present invention are identical, all there is no seam on two sides, formed shell left and right after pressing like this.And cover plate area of the prior art is less than the area of body 1, so after its pressing, seam is positioned on side.The present invention is by adopting body 1 and the cover plate 2 that area equates and align in edge that seam is transferred on upper and lower four faces in front and back.Because the area of two sides, left and right is large, deformation the most easily occurs.Once generation deformation, at first seam crossing can split.So side makes cover plate and body after pressing firmer without seam.
As shown in Figure 4 and Figure 5, along cover plate 2 inner surface edge, be provided with a plurality of alignment pins 4, corresponding with alignment pin 4, body 1 inner surface also is provided with the location notch 5 suitable with described alignment pin 4.During pressing, the location notch 5 that each alignment pin 4 is corresponding with it is in a straight line could pressing.After pressing completes, alignment pin 4 is pressed in location notch 5.But the present invention makes improvement to alignment pin 4, as shown in Figure 6, alignment pin 4 integral body are taper type, and its diameter is increased gradually by end to root.The benefit of design is like this, and when pressing, alignment pin 4 is than being easier to enter location notch 5, and after pressing, alignment pin 4 roots can be in the interior formation interference fit of location notch 5, and the resistance increased on left and right directions improves bond strength.
In order to make cover plate 2 and body 1 pressing firm, fixing before and after also needing on above-below direction.As shown in Figure 7 and Figure 8, along cover plate 2 inner surface edge, be provided with a plurality of decks 6, corresponding with deck 6, body 1 inner surface also is provided with the holding section 7 suitable with described deck 6.As shown in Figure 9, deck 6 is two lobe formula structures, a groove is arranged between two lobes, and holding section 7 is positioned on the enclosing sheet free margins on upper and lower four limits, body 1 front and back.Stamp a recess at its free margins, this indent is exactly holding section 7.Due to the thinner thickness of indent free margins, can and 6 liang of lobes of aforementioned deck between groove suitable.Therefore after pressing, holding section 7 embeds in deck 6.It should be noted that in Fig. 5 the deck 6 that is positioned at cover plate 2 edges, front, its groove bearing of trend is above-below direction, that is to say that the deck 6 of front edge is responsible for fixing on fore-and-aft direction.And being positioned at the deck 6 at upper and lower two edges of cover plate 2, its groove bearing of trend is fore-and-aft direction, that is to say that the deck 6 of upper and lower two edges is responsible for the fixing of above-below directions.Above-mentioned deck 6 actings in conjunction, before and after can realizing, above-below direction is fixing.
As shown in figure 10, cover plate 2 inboards also are distributed with a plurality of hidden discounts 8.Hidden discount 8 is a kind of more common bindiny mechanisms, and it is slight curvature when pressing, and the protuberance that makes to be positioned at termination can stretch into the joint of another side.Protuberance relies on self elasticity maintenance fastening state after blocking joint.But the module meter case can be used in the operational environment of Long-term Vibration, under the impact of vibration, deformation easily occurs and breaks away from engaging in hidden discount 8.As shown in figure 11, the present invention has set up support portion 9 at the root of hidden discount 8.Support portion 9 is triangular in shape, and its plane, place is parallel with the bending direction of hidden discount 8.Because when hidden discount 8 bends, support portion 9 can give 8 one of hidden discounts and the rightabout power of bending direction, reduces the degree of crook of hidden discount 8.
Body 1 and cover plate 2 press together the shell that forms the module instrument.The material of shell is generally selected the engineering plastics synthetic through plurality of raw materials.Plastic material is easy deformation, especially cover plate 2 and body 1 these two parts that area is larger under external force.Therefore as shown in figure 12, the present invention is provided with twice reinforcement 10 at the inner surface of body 1.Reinforcement 10 all can improve the intensity of body 1 in front and back and above-below direction, reduces body 1 deformation under external force.Reinforcement 10 is identical material with body 1, and just reinforcement 10 wants thicker with respect to other parts of body 1.The shape of reinforcement 10 and circuit board shape are complementary, and circuit board being arranged on to body 1 when interior, can also play the effect of fixing circuit board.
Claims (9)
1. a module meter case, comprise cover plate and body, it is characterized in that, described cover inner surface is provided with at front and back and the fixing deck of above-below direction, and described body internal surface is provided with the holding section suitable with deck.
2. by module meter case claimed in claim 1, it is characterized in that, described cover plate equates with this bulk area and align in edge.
3. by module meter case claimed in claim 1, it is characterized in that, described cover inner surface also is provided with the alignment pin for location, and described body internal surface is provided with the location notch suitable with alignment pin.
4. by module meter case claimed in claim 3, it is characterized in that, described alignment pin is increased gradually by end to root diameter (RD).
5. by module meter case claimed in claim 1, it also comprises the hidden discount that is positioned at cover inner surface, it is characterized in that, described hidden discount root is provided with support portion.
6. by module meter case claimed in claim 1, it is characterized in that, described deck is comprised of two intermediate plates that extend in the same way.
7. by module meter case claimed in claim 6, it is characterized in that, describedly for the deck fixing at fore-and-aft direction, be arranged on edge, cover plate front, for the deck fixing at above-below direction, be arranged on upper and lower two edges of cover plate.
8. by the described module meter case of any one in claim 1 to 7, it is characterized in that, described body internal surface also is provided with reinforcement.
9. by module meter case claimed in claim 8, described body interior has circuit board, it is characterized in that, described reinforcement shape and this circuit board shape are complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103759279A CN103442535A (en) | 2013-08-26 | 2013-08-26 | Module meter case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103759279A CN103442535A (en) | 2013-08-26 | 2013-08-26 | Module meter case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103442535A true CN103442535A (en) | 2013-12-11 |
Family
ID=49696179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103759279A Pending CN103442535A (en) | 2013-08-26 | 2013-08-26 | Module meter case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103442535A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111831023A (en) * | 2020-08-03 | 2020-10-27 | 上海航天控制技术研究所 | Control moment gyro controller |
Citations (6)
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|---|---|---|---|---|
| CN201041862Y (en) * | 2007-02-07 | 2008-03-26 | 富士康(昆山)电脑接插件有限公司 | Electronic transmitter shell assembly structure |
| CN201315469Y (en) * | 2008-11-08 | 2009-09-23 | 介国安 | Universal combined molded case for protector |
| CN102256457A (en) * | 2010-11-30 | 2011-11-23 | 景智电子股份有限公司 | Display casing |
| CN202310400U (en) * | 2011-11-12 | 2012-07-04 | 佛山市明华科瑞德电气科技有限公司 | Assembly structure of power instrument circuit boards in instrument case |
| CN203068837U (en) * | 2013-01-10 | 2013-07-17 | 浙江创能新能源科技有限公司 | Solar water heater controller |
| CN203504910U (en) * | 2013-08-26 | 2014-03-26 | 南京优倍电气有限公司 | Module instrument shell |
-
2013
- 2013-08-26 CN CN2013103759279A patent/CN103442535A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201041862Y (en) * | 2007-02-07 | 2008-03-26 | 富士康(昆山)电脑接插件有限公司 | Electronic transmitter shell assembly structure |
| CN201315469Y (en) * | 2008-11-08 | 2009-09-23 | 介国安 | Universal combined molded case for protector |
| CN102256457A (en) * | 2010-11-30 | 2011-11-23 | 景智电子股份有限公司 | Display casing |
| CN202310400U (en) * | 2011-11-12 | 2012-07-04 | 佛山市明华科瑞德电气科技有限公司 | Assembly structure of power instrument circuit boards in instrument case |
| CN203068837U (en) * | 2013-01-10 | 2013-07-17 | 浙江创能新能源科技有限公司 | Solar water heater controller |
| CN203504910U (en) * | 2013-08-26 | 2014-03-26 | 南京优倍电气有限公司 | Module instrument shell |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111831023A (en) * | 2020-08-03 | 2020-10-27 | 上海航天控制技术研究所 | Control moment gyro controller |
| CN111831023B (en) * | 2020-08-03 | 2021-10-29 | 上海航天控制技术研究所 | Control moment gyro controller |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131211 |
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| RJ01 | Rejection of invention patent application after publication |