CN101900626A - Knock sensor and manufacturing method thereof - Google Patents
Knock sensor and manufacturing method thereof Download PDFInfo
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- CN101900626A CN101900626A CN2009101423515A CN200910142351A CN101900626A CN 101900626 A CN101900626 A CN 101900626A CN 2009101423515 A CN2009101423515 A CN 2009101423515A CN 200910142351 A CN200910142351 A CN 200910142351A CN 101900626 A CN101900626 A CN 101900626A
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- pipe portion
- pedestal
- sheathed
- ring edge
- daughter board
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Abstract
The invention relates to a knock sensor and a manufacturing method thereof. The knock sensor comprises a base, a lower insulation sheet, a lower terminal board, a piezoelectric assembly, an upper terminal board, an upper insulation sheet and a counterweight block, wherein the base is provided with a disc-shaped basic part, a pipe part and an annular edge, wherein the pipe part extends along the axial direction of the basic part from the basic part, and the annular edge extends from the pipe part and surrounds the periphery of the pipe part; the lower insulation sheet is sleeved at the pipe part of the base and stacked above the basic part of the base; the lower terminal board is sleeved at the pipe part of the base and stacked above the lower insulation sheet; the piezoelectric assembly is sleeved at the pipe part of the base and stacked above the lower terminal board; the upper terminal board is sleeved at the pipe part of the base, stacked above the piezoelectric assembly and in electrical contact with the lower terminal board; the upper insulation sheet is sleeved at the pipe part of the base and stacked above the upper terminal board; and the counterweight is sleeved at the pipe part of the base and packed between the annular edge of the base and the upper insulation sheet. Therefore, the lower insulation sheet, the lower terminal board, the piezoelectric assembly, the upper terminal board, the upper insulation sheet and the counterweight block can be packed by the annular edge of the base to keep an appropriate contact state so as to really implement the knock detection.
Description
Technical field
The present invention is relevant with detonation sensor, is meant a kind of detonation sensor and manufacture method thereof especially.
Background technology
China publication number CN1760654 patent case has disclosed a kind of " detonation sensor and manufacture method thereof ", it mainly is outer peripheral face in the pipe portion of the pedestal annular groove that is shaped, one stop collar is set in the pipe portion of pedestal and applies after the axial load, allow the piezoelectric element of the pipe portion that is set in pedestal in advance, terminal strip, assembly such as insulating trip and balancing weight is keeping suitable compressing mutually, then again stop collar is applied radially load, certain a part of stop collar is embedded in the annular groove of pipe portion of pedestal, to finish the fixing of stop collar piezoelectric element is applied stable preload.
Though the stop collar of above-mentioned patent case can effectively solve and use the problem that nut produced in the prior art of above-mentioned patent case, but no matter be stop collar or nut, with extra member assemblies such as piezoelectric element, terminal strip, insulating trip and balancing weight are fixed, applied predetermined load simultaneously.Therefore, these extra members tend to cause the raising of whole manufacturing cost, and need the output pressure of control board and when pressure reaches predetermined value, by axial force distribution riveted stop collar, its manufacture process easily makes the pipe portion of pedestal produce modification, cause substandard product, manufacture process certainly also can be comparatively complicated.
Summary of the invention
At the problems referred to above, fundamental purpose of the present invention is to provide a kind of detonation sensor and manufacture method thereof, and it has cheap manufacturing cost and easy manufacture process.
For achieving the above object, a kind of detonation sensor provided by the present invention, it is characterized in that including: a pedestal, have a discoid base portion, a pipe portion and a ring edge, along the extending axially of described base portion, the periphery of described pipe portion is extended and be surrounded in the described pipe of described ring cause portion by described base portion in described pipe portion; Insulating trip once be sheathed on the pipe portion of described pedestal, and storehouse is above the base portion of described pedestal; Terminal strip once be sheathed on the pipe portion of described pedestal, and storehouse is above described insulating trip down; One piezoelectric element be sheathed on the pipe portion of described pedestal, and storehouse is above the daughter board of described lower end; One upper end daughter board is sheathed on the pipe portion of described pedestal, and storehouse and electrically contacts with described lower end daughter board above described piezoelectric element; Insulating trip on one be sheathed on the pipe portion of described pedestal, and storehouse is above the daughter board of described upper end; One balancing weight is sheathed on the pipe portion of described pedestal, and is packed in the ring edge and described the going up between the insulating trip of described pedestal.
In the technical scheme of the invention described above, the pipe portion of described pedestal has a big footpath Duan Yuyi path section, described insulating trip down, described lower end daughter board, described piezoelectric element, described upper end daughter board, describedly goes up the big footpath section that insulating trip and described balancing weight are sheathed on described pipe portion; Described ring edge has a vertical section and a horizontal segment, described vertical section is by end face axially vertically the extending along described pipe portion of described big footpath section, described horizontal segment is extended by the end of the described vertical section radial level along described pipe portion, and the described balancing weight of packing.
Also include a dead ring, described dead ring is sheathed on the big footpath section of the pipe portion of described pedestal, and between described big footpath section and described upper end daughter board, described piezoelectric element, described lower end daughter board and described balancing weight.
The ring edge of described pedestal is surrounded on the pipe portion periphery of described pedestal uninterruptedly.
The ring edge of described pedestal has at least one breach and is surrounded on the pipe portion periphery of described pedestal discontinuously.
Also include a packing ring, described gasket sleeve is located at the pipe portion of described pedestal, and between the ring edge and described balancing weight of described pedestal.
The invention provides a kind of manufacture method of above-mentioned detonation sensor, it is characterized in that including the following step: a) provide a pedestal, described pedestal has a discoid base portion, a pipe portion and a ring edge, along the extending axially of described base portion, the periphery of described pipe portion is extended and be surrounded in the described pipe of described ring cause portion by described base portion in described pipe portion; B) in regular turn will be once insulating trip, pipe portion that once insulating trip and a balancing weight are sheathed on described pedestal on terminal strip, a piezoelectric element, the upper end daughter board, also in regular turn storehouse above the base portion of described pedestal; C) with a drift ring edge of described pedestal is carried out punching press, make described ring edge produce bending, each assembly packing of step b) between the ring edge and base portion of described pedestal, and is applied predetermined load to each described assembly of step b); D) coat layer protective layer in the periphery of described pedestal.
Wherein step b) can be above described balancing weight a sheathed again packing ring.
Wherein step b) can be at the sheathed dead ring of the pipe portion of described pedestal, and described dead ring is between described pipe portion and described upper end daughter board, described piezoelectric element, described lower end daughter board and described balancing weight.
Wherein the described drift of step c) forms a vertical section and a horizontal segment with the punching press of described ring edge, and described ring edge is with described each assembly of described horizontal segment packing step b).
Described ring edge is surrounded on the pipe portion periphery of described pedestal uninterruptedly.
Described ring edge has at least one breach and is surrounded on the pipe portion periphery of described pedestal discontinuously.
Adopt technique scheme, detonation sensor of the present invention can dispense extra assembly, drift by setting the riveted board is directly at the peripheral integrally formed ring edge that goes out can be bent of the pipe portion of pedestal, to be sheathed on the assembly packing of the pipe portion of pedestal, and can effectively reach and reduce manufacturing cost and the purpose that simple manufacture process is provided.
Description of drawings
Figure 1A is a cut-open view, mainly shows the pedestal that the present invention's first preferred embodiment is provided;
Figure 1B is a cut-open view, main shows insulating trip, lower end daughter board, piezoelectric element, upper end daughter board down, goes up the state after insulating trip and balancing weight are sheathed on the pipe portion of pedestal;
Fig. 1 C is a cut-open view, shows that mainly drift carries out the state of punching press to the ring edge of base portion;
Fig. 1 D is a cut-open view, and the main ring edge that shows is bent to form a vertical section and a horizontal segment;
Fig. 2 is the cut-open view of the present invention's first preferred embodiment;
Fig. 3 is the vertical view that protective seam is removed in the present invention's first preferred embodiment, and the main ring edge that shows is surrounded on the pipe portion periphery of pedestal uninterruptedly;
Fig. 4 is the vertical view that protective seam is removed in the present invention's second preferred embodiment, and the main ring edge that shows has the pipe portion periphery that four breach are surrounded on pedestal discontinuously.
Embodiment
Now lifting following examples also is elaborated to structure of the present invention, feature and effect in conjunction with the accompanying drawings.
As shown in Figure 2; be the detonation sensor 10 that the present invention's first preferred embodiment is provided, consist predominantly of a pedestal 20, once insulating trip 30, dead ring, once insulating trip 70, a balancing weight 80, a dead ring 82, a packing ring 84 and a protective seam 86 on terminal strip 40, a piezoelectric element 50, the upper end daughter board 60.
Following insulating trip 30 is sheathed on the big footpath section 242 of the pipe portion 24 of pedestal 20, and storehouse is above the base portion 22 of pedestal 20.
Lower end daughter board 40 is sheathed on the big footpath section 242 of the pipe portion 24 of pedestal 20, and is stacked over down the top of insulating trip 30, makes lower end daughter board 40 keep the state of insulation by the base portion 22 of insulating trip 30 down and pedestal 20.
Upper end daughter board 60 is sheathed on the big footpath section 242 of the pipe portion 24 of pedestal 20, and storehouse electrically contacts with lower end daughter board 40 above piezoelectric element 50 simultaneously.
Balancing weight 80 is sheathed on the big footpath section 242 of the pipe portion 24 of pedestal 20, and storehouse insulating trip 70 above the last insulating trip 70 and on can passing through keep with upper end daughter board 60 between state of insulation, to provide vibration force to piezoelectric element 50.
Protective seam 86 is made by synthetic resin, is coated on the periphery of pedestal 20.
By said structure as can be known, detonation sensor 10 of the present invention is the pipe portion 24 peripheral integrally formed ring edge 26 that go out can be bent at pedestal 20, with will descend insulating trip 30, lower end daughter board 40, piezoelectric element 50, upper end daughter board 60, go up insulating trip 70, in addition packing of balancing weight 80 and packing ring 84, and simultaneously said modules is applied predetermined load, need not to use assemblies such as existing employed stop collar of patent case or nut.Thus, detonation sensor 10 provided by the present invention can dispense extra assembly, makes detonation sensor 10 of the present invention compare with existing patent case, more easy manufacture process can be provided and effectively reduce manufacturing cost.
What deserves to be mentioned is that the structure of detonation sensor of the present invention can have multiple variation.As shown in Figure 4, the detonation sensor 90 that is provided for the present invention's second preferred embodiment, main difference is that the ring edge 96 of pedestal 92 has four breach 962 (at least one breach gets final product) and is surrounded on pipe portion 94 peripheries of pedestal 92 discontinuously, can be sheathed on the assembly of the pipe portion 94 of pedestal 92 equally by horizontal segment 964 packings, and each assembly is applied predetermined load.
Conjunction with figs. describes the manufacture method of detonation sensor 10 of the present invention more below.
Step a): shown in Figure 1A, provide a pedestal 20, pedestal 20 has a discoid base portion 22, a pipe portion 24 and a ring edge 26.Pipe portion 24, and is had a big footpath section 242 and one a path section 244. and encircles edge 26 were extended upward and be surrounded on uninterruptedly pipe portion 24 by the big footpath section 244 of pipe portion 24 path section 244 peripheries along axially the extending upward of base portion 22 by the end face of base portion 22.
Step b): shown in Figure 1B, in regular turn with a dead ring 82, once insulating trip 30, once on terminal strip 40, a piezoelectric element 50, the upper end daughter board 60, an insulating trip 70, a balancing weight 80 and a packing ring 84 be sheathed on pedestal 20 pipe portion 24 big footpath section 242 and in regular turn storehouse above the base portion 22 of pedestal 20.
Step c): shown in Fig. 1 C, use the ring edge 26 of 12 pairs of pedestals 20 of a drift to carry out punching press, make ring edge 26 be bent to form a vertical section 262 and a horizontal segment 264, and utilize horizontal segment 264 these assembly packings, apply predetermined load (shown in Fig. 1 D) simultaneously step b).
Step d): coat one deck by the made protective seam 86 of synthetic resin in the periphery of pedestal 20, finish the manufacturing (as shown in Figure 2) of detonation sensor 10 of the present invention.
By above-mentioned steps as can be known, 10 need of detonation sensor of the present invention carry out punching press with the ring edge 26 of 12 pairs of pedestals 20 of drift, make the ring edge 26 of pedestal 20 produce bending, can apply predetermined load to these assemblies of step b).Reviewing existing patent case then is the pipe portion that earlier stop collar is sheathed on pedestal, and after stop collar applies axial load, certain stop collar partly is embedded in the annular groove of pipe portion of pedestal, to finish the fixing of stop collar again.As can be known, detonation sensor 10 of the present invention is more simpler and easy than the manufacture process of existing patent case under comparing, and can effectively reduce whole manufacturing cost simultaneously.
What deserves to be mentioned is that the structure of detonation sensor of the present invention can have multiple variation.As shown in Figure 4, the ring edge 96 of step a) can have four breach 962 (at least one breach gets final product) and be surrounded on pipe portion 94 peripheries of pedestal 92 discontinuously.After ring edge 96 is formed horizontal segment 964 by drift 12 punching presses of step c), can be sheathed on the assembly of the pipe portion 94 of pedestal 92 equally by horizontal segment 964 packings, and these assemblies are applied predetermined load.
The constituent components that the present invention is disclosed in the aforementioned embodiment only for illustrating, is not used for limiting protection scope of the present invention, and substituting or changing of other equivalent elements also should be contained by scope of patent protection of the present invention.
Claims (12)
1. detonation sensor is characterized in that including:
One pedestal has a discoid base portion, a pipe portion and a ring edge, and along the extending axially of described base portion, the periphery of described pipe portion is extended and be surrounded in the described pipe of described ring cause portion by described base portion in described pipe portion;
Insulating trip once be sheathed on the pipe portion of described pedestal, and storehouse is above the base portion of described pedestal;
Terminal strip once be sheathed on the pipe portion of described pedestal, and storehouse is above described insulating trip down;
One piezoelectric element be sheathed on the pipe portion of described pedestal, and storehouse is above the daughter board of described lower end;
One upper end daughter board is sheathed on the pipe portion of described pedestal, and storehouse and electrically contacts with described lower end daughter board above described piezoelectric element;
Insulating trip on one be sheathed on the pipe portion of described pedestal, and storehouse is above the daughter board of described upper end;
One balancing weight is sheathed on the pipe portion of described pedestal, and is packed in the ring edge and described the going up between the insulating trip of described pedestal.
2. detonation sensor as claimed in claim 1, it is characterized in that: the pipe portion of described pedestal has a big footpath Duan Yuyi path section, described insulating trip down, described lower end daughter board, described piezoelectric element, described upper end daughter board, describedly goes up the big footpath section that insulating trip and described balancing weight are sheathed on described pipe portion; Described ring edge has a vertical section and a horizontal segment, described vertical section is by end face axially vertically the extending along described pipe portion of described big footpath section, described horizontal segment is extended by the end of the described vertical section radial level along described pipe portion, and the described balancing weight of packing.
3. detonation sensor as claimed in claim 2, it is characterized in that: also include a dead ring, described dead ring is sheathed on the big footpath section of the pipe portion of described pedestal, and between described big footpath section and described upper end daughter board, described piezoelectric element, described lower end daughter board and described balancing weight.
4. detonation sensor as claimed in claim 1 is characterized in that: the ring edge of described pedestal is surrounded on the pipe portion periphery of described pedestal uninterruptedly.
5. detonation sensor as claimed in claim 1 is characterized in that: the ring edge of described pedestal has at least one breach and is surrounded on the pipe portion periphery of described pedestal discontinuously.
6. detonation sensor as claimed in claim 1 is characterized in that: also include a packing ring, described gasket sleeve is located at the pipe portion of described pedestal, and between the ring edge and described balancing weight of described pedestal.
7. the manufacture method of a detonation sensor as claimed in claim 1 is characterized in that including the following step:
A) provide a pedestal, described pedestal has a discoid base portion, a pipe portion and a ring edge, and along the extending axially of described base portion, the periphery of described pipe portion is extended and be surrounded in the described pipe of described ring cause portion by described base portion in described pipe portion;
B) in regular turn will be once insulating trip, pipe portion that once insulating trip and a balancing weight are sheathed on described pedestal on terminal strip, a piezoelectric element, the upper end daughter board, also in regular turn storehouse above the base portion of described pedestal;
C) with a drift ring edge of described pedestal is carried out punching press, make described ring edge produce bending, each assembly packing of step b) between the ring edge and base portion of described pedestal, and is applied predetermined load to each described assembly of step b);
D) coat layer protective layer in the periphery of described pedestal.
8. the manufacture method of detonation sensor as claimed in claim 7 is characterized in that: wherein step b) can be above described balancing weight a sheathed again packing ring.
9. the manufacture method of detonation sensor as claimed in claim 7, it is characterized in that: wherein step b) can be at the sheathed dead ring of the pipe portion of described pedestal, and described dead ring is between described pipe portion and described upper end daughter board, described piezoelectric element, described lower end daughter board and described balancing weight.
10. the manufacture method of detonation sensor as claimed in claim 7, it is characterized in that: wherein the described drift of step c) forms a vertical section and a horizontal segment with the punching press of described ring edge, and described ring edge is with described each assembly of described horizontal segment packing step b).
11. the manufacture method of detonation sensor as claimed in claim 7 is characterized in that: described ring edge is surrounded on the pipe portion periphery of described pedestal uninterruptedly.
12. the manufacture method of detonation sensor as claimed in claim 7 is characterized in that: described ring edge has at least one breach and is surrounded on the pipe portion periphery of described pedestal discontinuously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101423515A CN101900626A (en) | 2009-06-01 | 2009-06-01 | Knock sensor and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101423515A CN101900626A (en) | 2009-06-01 | 2009-06-01 | Knock sensor and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101900626A true CN101900626A (en) | 2010-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101423515A Pending CN101900626A (en) | 2009-06-01 | 2009-06-01 | Knock sensor and manufacturing method thereof |
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| Country | Link |
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| CN (1) | CN101900626A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539066A (en) * | 2010-12-10 | 2012-07-04 | 比亚迪股份有限公司 | Preparation method for knock sensor |
| CN102735394A (en) * | 2011-04-08 | 2012-10-17 | 三菱电机株式会社 | Knock sensor for combustion motor |
| CN110023731A (en) * | 2016-12-01 | 2019-07-16 | 法国大陆汽车公司 | Detonation sensor with the lower flange for being provided with attachment hole |
-
2009
- 2009-06-01 CN CN2009101423515A patent/CN101900626A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539066A (en) * | 2010-12-10 | 2012-07-04 | 比亚迪股份有限公司 | Preparation method for knock sensor |
| CN102735394A (en) * | 2011-04-08 | 2012-10-17 | 三菱电机株式会社 | Knock sensor for combustion motor |
| CN102735394B (en) * | 2011-04-08 | 2015-04-22 | 三菱电机株式会社 | Knock sensor for combustion motor |
| CN110023731A (en) * | 2016-12-01 | 2019-07-16 | 法国大陆汽车公司 | Detonation sensor with the lower flange for being provided with attachment hole |
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| PB01 | Publication | ||
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Application publication date: 20101201 |