CN203761727U - Circuit board fixing element and electronic control unit - Google Patents
Circuit board fixing element and electronic control unit Download PDFInfo
- Publication number
- CN203761727U CN203761727U CN201420001546.4U CN201420001546U CN203761727U CN 203761727 U CN203761727 U CN 203761727U CN 201420001546 U CN201420001546 U CN 201420001546U CN 203761727 U CN203761727 U CN 203761727U
- Authority
- CN
- China
- Prior art keywords
- circuit board
- retaining element
- board retaining
- back segment
- assembled state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000758 substrate Substances 0.000 claims abstract description 37
- 229920003023 plastic Polymers 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 7
- 230000007704 transition Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Landscapes
- Mounting Of Printed Circuit Boards And The Like (AREA)
- Insertion Pins And Rivets (AREA)
Abstract
The utility model discloses a circuit board fixing element which fixes a circuit board onto a substrate. The circuit board fixing element comprises a rivet and an expansion sleeve fitting with each other. The expansion sleeve includes an annular base part and a cylinder part which projects forwards from the inner circumference of the base part. An inner hole that is through from the front to the rear part is limited in the cylinder part. The inner hole includes a rear segment and a front segment. The inner diameter of the rear segment is larger than that of the front segment. The cylinder part includes multiple radially elastically deformable branch parts which are separated from one another by longitudinal slits. The rivet includes a base plate and a nail shank which projects forwards from the base plate, wherein the nail shank is inserted into the inner hole. The diameter of the nail shank is equal to or smaller than the inner diameter of the rear segment and larger than the inner diameter of the front segment. Also disclosed is an electronic control unit which includes the circuit board and the substrate which are fixed together by the circuit board fixing element. The circuit board fixing element and the electronic control unit can help to simplify the operation of fixing the circuit board onto the substrate.
Description
Technical field
The application relates to a kind of for circuit board being fixed to the circuit board retaining element on substrate.The application also relates to a kind of electronic control unit that adopts sort circuit plate retaining element.
Background technology
Electronic control unit, the electronic control unit for example using in various vehicles, generally includes housing and is arranged on the circuit board (especially printed circuit board (PCB)) in housing.
For example, a kind of partial structurtes of traditional electronic control unit have been shown in Fig. 1, wherein, cover body 1 combines with substrate 2 and forms housing, and circuit board 3 is placed in housing and is clamped between cover body 1 and substrate 2 at periphery.Tapping screw 4, through the through hole in substrate 2 and circuit board 3, screws the nut 5 by being arranged in cover 1, then is screwed in cover 1, thus circuit board 3 is fixed on substrate 2, to guarantee that relative motion can not occur for circuit board 3 and substrate 2.
In the structure shown in Fig. 1, screwing of tapping screw 4 is consuming time, effort.In addition, tapping screw 4 and nut 5 are all made of metal, and price is relatively high.
Utility model content
Therefore, the application aims to provide a kind of circuit board retaining element simple to operate, for circuit board is fixed to substrate rapidly.
For this reason, according to the application aspect, provide a kind of for circuit board being fixed to the circuit board retaining element on substrate, described circuit board retaining element comprises the rivet and the expansion sleeve that cooperatively interact; Described expansion sleeve comprises annular base and the cylinder portion from the interior Zhou Xiangqian projection of base portion, the endoporus connecting before and after described cylinder portion limits, described endoporus comprises back segment and leading portion, the internal diameter of described back segment is greater than the internal diameter of described leading portion, and described cylinder portion comprises the multiple components that can radial elastic distortion that are separated from each other by longitudinal slit; Described rivet comprises base plate and from the base plate nail bar of projection forward, described nail bar inserts in described endoporus, and the diameter of described nail bar is equal to or less than the internal diameter of described back segment, and is greater than the internal diameter of described leading portion.
According to a kind of embodiments possible, described circuit board retaining element has pre-assembled state and complete assembled state, in described pre-assembled state, described nail bar only inserts in described back segment, in described complete assembled state, described nail bar inserts in described leading portion and described back segment, and the position corresponding with described leading portion of each component radially outward strutted.
According to a kind of embodiments possible, described cylinder portion comprises rear end part, fore-end and the mid portion between rear end part and fore-end, described fore-end forms tapered tapering part forward, and the external diameter of the rear end of described tapering part is greater than the external diameter of described mid portion.
According to a kind of embodiments possible, the periphery of described mid portion is formed with the circumferential recess radially inwardly concaving.
According to a kind of embodiments possible, the periphery of described base portion is formed with projection flange forward, between the described flange of projection forward and described cylinder portion, limits slot, and the shape and size of described slot are arranged to be suitable for receiving the flange of projection backward on described substrate.
According to a kind of embodiments possible, described base portion has the groove being recessed into forward from its rear surface, and the front surface of described base plate is provided with the stage portion being adapted to fit in described groove.
According to a kind of embodiments possible, in the interior perimeter surface of described cylinder portion, be formed with longitudinal groove.
According to a kind of embodiments possible, the periphery of the front part of described nail bar is provided with ridge; At described pre-assembled state, described ridge is engaged in described back segment, so that rivet and expansion sleeve are kept together; At described complete assembled state, described ridge is arranged in described leading portion.
According to a kind of embodiments possible, the rear section of described nail bar is formed with thickened portion; At described pre-assembled state, described thickened portion is positioned at outside described back segment; At described complete assembled state, described thickened portion is engaged in described back segment.
According to a kind of embodiments possible, described rivet and expansion sleeve are working of plastics.
According to another aspect of the application, a kind of electronic control unit is provided, comprise the circuit board and the substrate that utilize described circuit board retaining element to be fixed together.
According to the application, can utilize circuit board retaining element fast and easily circuit board to be fixed on substrate.
In addition,, in the time that circuit board retaining element is made of plastics, can reduce the cost of circuit board retaining element.
Brief description of the drawings
The application's aforementioned and other side will more completely be understood and be understood by the detailed introduction done with reference to the accompanying drawings, wherein:
Fig. 1 is according to the partial sectional view of a kind of electronic control unit of prior art;
Fig. 2,3 is respectively according to the expansion sleeve of circuit board retaining element of a kind of embodiments possible of the application and the cutaway view of rivet;
The cutaway view of the pre-assembled state of the circuit board retaining element that Fig. 4 is made up of the expansion sleeve in Fig. 2,3 and rivet;
Fig. 5 be prepare to utilize described circuit board retaining element by circuit board the partial sectional view together with substrate mounting time;
Fig. 6 utilizes described circuit board retaining element by the partial sectional view after circuit board is together with substrate mounting.
Embodiment
The application's embodiments possible is described with reference to the accompanying drawings.
According to the application's general principle, the circuit board retaining element that adopts a kind of expansive rivet form fast by circuit board (especially printed circuit board (PCB)) together with substrate mounting.
As in Figure 2-4, sort circuit plate retaining element is made up of expansion sleeve 6 and rivet 8, and the two is all preferably working of plastics.
Referring to Fig. 2, the single-piece that expansion sleeve 6 is formed as one, comprises annular base 10 and the cylinder portion 12 from the interior Zhou Xiangqian projection of base portion 10.The periphery of base portion 10 is formed with the flange 14 of projection forward, limits annular slot 16 thus between the rear end part of cylinder portion 12 and flange 14.In addition, the rear end face 10a place of base portion 10 is formed with recessed forward shallow grooves 18.
In the axial direction, cylinder portion 12 comprises rear end part, fore-end and the mid portion between rear end part and fore-end.Cylinder portion 12 in its back-end part is strengthened external diameter and is formed large diameter portion 20, is provided with the circumferential recess 22 radially inwardly concaving in mid portion, and its fore-end forms towards the tapered tapering part 24 of front end face.The external diameter of the external diameter of the rear end of tapering part 24 and large diameter portion 20 is all greater than the external diameter of mid portion.Circumferential recess 22 makes a portion 12 have at this intensity weakening.
Cylinder portion 12 inside limit the endoporus that extends to vertically a portion 12 front end faces from shallow grooves 18, and this through hole comprises large footpath back segment 26 and path leading portion 28.
From near the longitudinal slot 30 that extends to vertically a portion 12 front end faces the rear end of cylinder portion 12, cylinder portion 12 is divided at the component being upwards separated from each other in week.The quantity of longitudinal slot 30 is two or more, is partitioned into thus the component of same quantity.The circumferential angle that each component occupies is preferably equal to each other, but also can differ from one another.In the situation that having even number component, preferably radially relative component occupies equal circumferential angle (being mutually symmetrical) each other.Longitudinal slot 30 can be out of shape by radial elastic each component.In addition the easier radial elastic distortion of the front part that is arranged so that each component of circumferential recess 22.
In addition,, in the interior perimeter surface of cylinder portion 12, be formed with and be parallel to axially extended longitudinal groove 32.Preferably, substantially in large footpath back segment 26 and path leading portion 28, form respectively groove 32 along the longitudinal center line of the interior perimeter surface of each component.Between large footpath back segment 26 and path leading portion 28, form transition shoulder 34.The rear end of large footpath back segment 26 forms chamfering.
As shown in Figure 3, the single-piece that rivet 8 is formed as one, rivet 8 comprises disc base plate 40, is located at the stage portion 42 on base plate 40 front end face 40a, and vertically from the stage portion 42 nail bar 44 of projection forward.Nail bar 44 is suitable in the endoporus of the cylinder portion 12 that is inserted into sleeve 6, to form the application's circuit board retaining element.
The size and dimension of stage portion 42 is arranged to enable to be inserted in the groove 18 of sleeve 6.It may be noted that stage portion 42 and groove 18 can arrange the circumferential location feature of mutual coupling in the time there is circumferential positioning requirements between rivet 8 and sleeve 6, for example, the two be polygon perpendicular to circumferential cross section.
The external diameter of following closely bar 44 is less than the internal diameter of the large footpath back segment 26 of sleeve 6, is greater than the internal diameter of path leading portion 28.
In the axial rear section of nail bar 44, be formed with thickened portion 46, its external diameter is substantially equal to or is slightly larger than the internal diameter of the large footpath back segment 26 of sleeve 6.In addition, the axial location of thickened portion 46 arranges like this, insert under the state in groove 18 in stage portion 42, thickened portion 46 is arranged in large footpath back segment 26, and preferably the front end of thickened portion 46 pushes against the transition shoulder 34 between large footpath back segment 26 and path leading portion 28.
In the axial front side part of nail bar 44, be provided with ridge 48.Described ridge 48 is the form of prominent ring continuously on nail bar 44 outer peripheral faces, or the discrete bump circumferentially distributing or the form of outstanding segmental arc.The external diameter that described ridge 48 limits equals or is slightly larger than the internal diameter of large footpath back segment 26.The circumferential position of described ridge 48 on nail bar 44 set like this, be that axial distance between ridge 48 and the front end face 40a of base plate 40 is greater than the axial distance between the rear end face 10a of axial distance, the front end face that is less than a portion 12 and base portion 10 between transition shoulder 34 and the rear end face 10a of base portion 10, thereby insert under the state in groove 18 in stage portion 42, ridge 48 is arranged in path leading portion 28.
In addition, the front end of nail bar 44, is formed with fillet 50 or chamfering, inserts in cylinder portion 12 to contribute to following closely bar 44.
The pre-assembled state of the application's circuit board retaining element has been shown in Fig. 4, the front part of wherein following closely bar 44 is inserted in the large footpath back segment 26 of cylinder portion 12 of sleeve 6, wherein, ridge 48 forms tight fit with large footpath back segment 26, thereby the front part of nail bar 44 is remained in large footpath back segment 26, and maintain the pre-assembled state shown in Fig. 4.Now, the front end fillet 50 of nail bar 44 pushes against in transition shoulder 34, and each component of cylinder portion 12 do not have strain, and thickened portion 46 is positioned at a portion 12 outsides.
Be appreciated that the rear chamfer of large footpath back segment 26 and the front end fillet 50 of nail bar 44 contribute to nail bar 44 to insert in a portion 12.Described groove 32 contributes to prevent when inserting in cylinder portion 12 at nail bar 44 clamping stagnation.
As shown in Figure 5, the circuit board retaining element in pre-assembled state shown in Fig. 4 can be fixed to circuit board (especially printed circuit board (PCB)) 3 on substrate 2.For this reason, circuit board 3 in its suitable position, for example, keeps to the side, and is provided with one or more through hole 60, and substrate 2 is provided with one or more through hole 70 in corresponding position.Be formed with the flange 72 of projection backward around through hole 70, the shape and size of described flange 72 are arranged to be suitable for being inserted in annular slot 16.
The internal diameter of through hole 70 equals or is slightly larger than the external diameter of the rear end part of a portion 12.The internal diameter of through hole 60 equals or is slightly larger than an external diameter for portion's mid portion, is less than the external diameter of rear end part and the external diameter of tapering part 24 rear ends in the cylinder portion 12 of deformation state not.
Circuit board retaining element in pre-assembled state may need slightly radially inwardly each component of elastic compression cylinder portion 12 through through hole 70(), then need radially inwardly each component of elastic compression cylinder portion 12 through through hole 60(), so that flange 72 is inserted in annular slot 16, the rear surface of substrate 2 contacts with the front surface of flange 14, and tapering part 24 exposes from the front side of circuit board 3 completely through through hole 60 is rear.The shape of tapering part contributes to guide barrel portion 12 through through hole 70 and 60.
Next, nail bar 44 is further pushed in cylinder portion 12.Nail bar 44 forces radially outward strain of each component, thereby enters in path leading portion 28.Each component radially outward strain cause portion's mid portion securely jam-packed in through hole 60, and outwards open and make to be positioned at tapering part 24 Material card below on the leading edge of through hole 60 with the position, cylinder portion front side of tapering part 24.The leading edge of through hole 60 likely can be nipped and is arranged in tapering part 24 material below.Now, ridge 48 is engaged in a position, portion front side, in case non-magnetic shim bar 44(rivet 8) from the 12(of cylinder portion expansion sleeve 6) retreat.Thickened portion 46 is engaged in large footpath back segment 26, and the front end of thickened portion 46 comes close to or in contact with transition shoulder 34.Stage portion 42 is placed in groove 18, and the front surface of base plate 40 pushes against in the rear surface of base portion 10.Like this, circuit board retaining element is in assembled state, thereby circuit board 3 is fixed on substrate 2, as shown in Figure 5.
Now, the rear surface of the front surface contact circuit plate 3 of substrate 2, to provide support function and grounding function for circuit board 3.
Engaging of cylinder portion mid portion and through hole 60 and engaging of rear end part and through hole 70, on the two-dimensional direction in the plane of having guaranteed to limit at circuit board 3, circuit board 3 is accurately located with respect to substrate 2, can not misplace.Engaging of the front surface (leading edge of through hole 60) of tapering part 24 material below and circuit board 3, has guaranteed that circuit board 3 can not be shifted with respect to substrate 2 in the direction of the plane limiting perpendicular to circuit board 3.
Depend on and strut the required thrust of a portion 12, can will follow closely in bar 44 push in cylinder portions 12 by hand or by means of compression tools.Less and be all working of plastics by expansion sleeve 6 and rivet 8 in the situation that at circuit board retaining element, easily realize manual will nail in bar 44 push in cylinder portions 12.
Previously described example is all the structure that possible adopt of expansion sleeve 6 and rivet 8, and those skilled in the art can carry out to this various amendments.
For example, being combined with of annular slot 16 and flange 72 helps improve the positioning precision between expansion sleeve 6 and substrate 2, but this is also nonessential.In simple execution mode, flange 14, annular slot 16, flange 72 can be cancelled.In this case, under the complete assembled state of circuit board retaining element, the rear surface of substrate 2 directly contacts the front surface of base portion 10.
And for example, being combined with of groove 18 and stage portion 42 helps improve the positioning precision between expansion sleeve 6 and rivet 8, but this is also also nonessential.In simple execution mode, groove 18 and stage portion 42 can be cancelled.
In order to ensure under assembled state, tapering part 24 being exposed completely from the front surface of circuit board 3 completely, tapering part 24 rear ends and base portion 10(or flange 14, the axial distance between front surface if any) should be greater than the thickness sum of circuit board 3 and substrate 2 slightly.
In addition, in order to strengthen the ability that prevents that rivet 8 from retreating from expansion sleeve 6, the position below of tapering part 24, it is the intermediate location between tapering part 24 rear ends and cylinder portion mid portion, also can be arranged to the form of the conical surface, like this, the leading edge of through hole 60 can be nipped in the material at this position to a greater degree.
According to the application's general principle, utilize described circuit board retaining element, only need single racking, just can bring circuit board retaining element into complete assembled state and circuit board and substrate are secured together.
In addition, circuit board retaining element has been realized circuit board and has been fixed with respect to the three-dimensional of substrate, it is hereby ensured firm on substrate, reliable, the high-precision installation of circuit board.
It may be noted that and can utilize in one or more position described circuit board retaining element that circuit board is fixed on substrate.As embodiments possible, in other position, can realize the fixing of circuit board and substrate by means of snap-in structure, form fit structure etc.
The application's circuit board retaining element can be used in electronic control unit, for example, in the electronic control unit using in various vehicles, circuit board (especially printed circuit board (PCB)) is fixed on to substrate.Therefore, the application also relates to the various electronic control units that adopt sort circuit plate retaining element.
Although described the application, the details shown in the application's scope is not limited to reference to concrete execution mode here.In the case of not departing from the application's general principle, can make various amendments for these details.
Claims (13)
1. for circuit board being fixed to the circuit board retaining element on substrate, it is characterized in that, described circuit board retaining element comprises the rivet (8) and the expansion sleeve (6) that cooperatively interact;
Described expansion sleeve comprises annular base (10) and the cylinder portion (12) from the interior Zhou Xiangqian projection of base portion, the endoporus connecting before and after described cylinder portion limits, described endoporus comprises back segment (26) and leading portion (28), the internal diameter of described back segment is greater than the internal diameter of described leading portion, and described cylinder portion comprises the multiple components that can radial elastic distortion that are separated from each other by longitudinal slit (30);
Described rivet comprises base plate (40) and from the base plate nail bar (44) of projection forward, described nail bar inserts in described endoporus, and the diameter of described nail bar is equal to or less than the internal diameter of described back segment, and is greater than the internal diameter of described leading portion.
2. circuit board retaining element as claimed in claim 1, it is characterized in that, described circuit board retaining element has pre-assembled state and complete assembled state, in described pre-assembled state, described nail bar only inserts in described back segment, in described complete assembled state, described nail bar inserts in described leading portion and described back segment, and the position corresponding with described leading portion of each component radially outward strutted.
3. circuit board retaining element as claimed in claim 2, it is characterized in that, described cylinder portion comprises rear end part, fore-end and the mid portion between rear end part and fore-end, described fore-end forms tapered tapering part (24) forward, and the external diameter of the rear end of described tapering part is greater than the external diameter of described mid portion.
4. circuit board retaining element as claimed in claim 3, is characterized in that, the periphery of described mid portion is formed with the circumferential recess (22) radially inwardly concaving.
5. circuit board retaining element as claimed in claim 4, it is characterized in that, the periphery of described base portion is formed with projection flange (14) forward, between the described flange of projection forward and described cylinder portion, limit slot (16), the shape and size of described slot are arranged to be suitable for receiving the flange of projection backward (72) on described substrate.
6. circuit board retaining element as claimed in claim 5, it is characterized in that, described base portion has the groove (18) being recessed into forward from its rear surface, and the front surface of described base plate is provided with the stage portion (42) being adapted to fit in described groove.
7. circuit board retaining element as claimed in claim 6, is characterized in that, in the interior perimeter surface of described cylinder portion, is formed with longitudinal groove (32).
8. the circuit board retaining element as described in any one in claim 2 to 7, is characterized in that, the periphery of the front part of described nail bar is provided with ridge (48); At described pre-assembled state, described ridge is engaged in described back segment, so that rivet and expansion sleeve are kept together; At described complete assembled state, described ridge is arranged in described leading portion.
9. circuit board retaining element as claimed in claim 8, is characterized in that, the rear section of described nail bar is formed with thickened portion (46); At described pre-assembled state, described thickened portion is positioned at outside described back segment; At described complete assembled state, described thickened portion is engaged in described back segment.
10. the circuit board retaining element as described in any one in claim 1 to 7, is characterized in that, described rivet and expansion sleeve are working of plastics.
11. circuit board retaining elements as claimed in claim 8, is characterized in that, described rivet and expansion sleeve are working of plastics.
12. circuit board retaining elements as claimed in claim 9, is characterized in that, described rivet and expansion sleeve are working of plastics.
13. 1 kinds of electronic control units, comprise circuit board and substrate, it is characterized in that, described circuit board and substrate are fixed together by the circuit board retaining element as described in any one in claim 1 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420001546.4U CN203761727U (en) | 2014-01-02 | 2014-01-02 | Circuit board fixing element and electronic control unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420001546.4U CN203761727U (en) | 2014-01-02 | 2014-01-02 | Circuit board fixing element and electronic control unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203761727U true CN203761727U (en) | 2014-08-06 |
Family
ID=51256953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420001546.4U Expired - Fee Related CN203761727U (en) | 2014-01-02 | 2014-01-02 | Circuit board fixing element and electronic control unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203761727U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106163214A (en) * | 2015-04-07 | 2016-11-23 | 罗伯特·博世有限公司 | Electric unit and radiating subassembly thereof |
| CN107105584A (en) * | 2016-02-19 | 2017-08-29 | 法国大陆汽车公司 | It is provided with the printed circuit containment vessel bottom plate of the rivet blank carried by ventilation filter |
| WO2024187333A1 (en) * | 2023-03-13 | 2024-09-19 | 罗伯特·博世有限公司 | Electronic control device |
-
2014
- 2014-01-02 CN CN201420001546.4U patent/CN203761727U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106163214A (en) * | 2015-04-07 | 2016-11-23 | 罗伯特·博世有限公司 | Electric unit and radiating subassembly thereof |
| CN106163214B (en) * | 2015-04-07 | 2020-07-10 | 罗伯特·博世有限公司 | Electric unit and heat radiation assembly thereof |
| CN107105584A (en) * | 2016-02-19 | 2017-08-29 | 法国大陆汽车公司 | It is provided with the printed circuit containment vessel bottom plate of the rivet blank carried by ventilation filter |
| US10548233B2 (en) | 2016-02-19 | 2020-01-28 | Continental Automotive France | Printed circuit protective case base plate provided with a rivet blank borne by a ventilation filter |
| CN107105584B (en) * | 2016-02-19 | 2020-04-14 | 法国大陆汽车公司 | Printed circuit housing base plate provided with rivet blanks carried by ventilation filters |
| WO2024187333A1 (en) * | 2023-03-13 | 2024-09-19 | 罗伯特·博世有限公司 | Electronic control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20210102 |