CN204088880U - A kind of mounting structure of spark plug protective sleeve - Google Patents
A kind of mounting structure of spark plug protective sleeve Download PDFInfo
- Publication number
- CN204088880U CN204088880U CN201420496254.2U CN201420496254U CN204088880U CN 204088880 U CN204088880 U CN 204088880U CN 201420496254 U CN201420496254 U CN 201420496254U CN 204088880 U CN204088880 U CN 204088880U
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- CN
- China
- Prior art keywords
- spark plug
- protective sleeve
- plug protective
- cylinder head
- connecting plate
- 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 - Lifetime
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- 230000001681 protective effect Effects 0.000 title claims abstract description 76
- 238000009434 installation Methods 0.000 claims abstract description 15
- 210000003141 lower extremity Anatomy 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 10
- 230000008719 thickening Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The utility model discloses a kind of mounting structure of spark plug protective sleeve, comprise cylinder head, be positioned at side, chain chamber in described cylinder head and be provided with spark plug protective sleeve, described spark plug protective sleeve is connected along the bottom of its axis with the internal chamber wall in chain chamber, cylinder head is stretched out through after the outer chamber wall in chain chamber in upper end, in spark plug protective sleeve and chain chamber, respectively by interior between outer chamber wall, exterior seal ring seals, the upper end of described spark plug protective sleeve is provided with rubber sleeve, connecting plate is built-in with in described rubber sleeve, connecting plate described in this is provided with installation journal stirrup, described installation journal stirrup is fastenedly connected on cylinder head, the lower limb of rubber sleeve fits tightly to be formed with described spark plug protective sleeve and seals under the pressure effect of connecting plate.The utility model structure is simple, good sealing effect, be easy to processing and manufacturing, cost is low.
Description
Technical field
The utility model relates to motorcycle spark plug, specifically the mounting structure of spark plug protective sleeve.
Background technology
In general, four-stroke engine combustion chamber is equipped with two air valves (intake valve and vent valve) and a spark plug 1 ', an inferior position of this layout is exactly the time relatively grown to this process need burnt from plug ignition, and under higher engine speed, this just easily causes available firing duration may be abundant not, the power loss causing imperfect combustion and cause thereupon, emission is turn increased while fuel oil waste, and these problems can be resolved by being equipped with two spark plugs to each engine chamber.
Shown in Fig. 1 ~ 2, the spark plug 2 ' increased is arranged on the side, chain chamber 11 of engine usually, label 3 ' in Fig. 2, 4 ' represents timing chain and timing sprocket respectively, and this layout just needs increase protective sleeve, normally work in order to avoid lubricating fluid affects spark plug 2 ', concrete structure is as follows: in cylinder head 1, be namely positioned at side, chain chamber 11 be provided with spark plug protective sleeve 2, described spark plug protective sleeve 2 is connected along the bottom of its axis and the internal chamber wall 12 in chain chamber 11, cylinder head 1 is stretched out through after the outer chamber wall 13 in chain chamber 11 in upper end, spark plug protective sleeve 2 is with in chain chamber 11, outer chamber wall 12, respectively by interior between 13, exterior seal ring 3, 4 sealings, the ignition part of the spark plug 2 ' arranged in spark plug protective sleeve 2 extend in combustion chamber, the basic demand of spark plug protective sleeve 2 demand fulfillment avoids lubricating fluid enter protective sleeve inside or flow out external engine (usually in spark plug protective sleeve 2 with chain chamber 11 exactly, outer chamber wall 12, respectively by interior between 13, exterior seal ring 3, 4 radial seals prevent lubricating fluid from outflowing), and because spark plug protective sleeve 2 is oliquely downward obliquely installed, therefore its inside can not ponding laying dust (otherwise ponding laying dust can enter into chain chamber).
But at present for the water proof and dust proof not effectively design of spark plug protective sleeve outside; see the structure of the prior art shown in Fig. 1 ~ Fig. 2; wherein label 5 ' is the rubber ring with spark plug cap one; this structure needs special spark plug cap; and need spark plug cap to possess sealing and fixing function simultaneously; very high to the requirement of material, and the sealing effectiveness of this structure unreliable, and spark plug protective sleeve does not also carry out axial location and easily gets loose.Therefore be necessary improve further the mounting structure of existing spark plug protective sleeve and optimize.
Utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of mounting structure of novel spark plug protective sleeve, its structure is simple, good sealing effect, be easy to processing and manufacturing, cost is low.
The utility model solves the technical scheme that its technical problem adopts:
A kind of mounting structure of spark plug protective sleeve, comprise cylinder head, be positioned at side, chain chamber in described cylinder head and be provided with spark plug protective sleeve, described spark plug protective sleeve is connected along the bottom of its axis with the internal chamber wall in chain chamber, cylinder head is stretched out through after the outer chamber wall in chain chamber in upper end, in spark plug protective sleeve and chain chamber, respectively by interior between outer chamber wall, exterior seal ring seals, the upper end of described spark plug protective sleeve is provided with rubber sleeve, connecting plate is built-in with in described rubber sleeve, connecting plate described in this is provided with installation journal stirrup, described installation journal stirrup is fastenedly connected on cylinder head, the lower limb of rubber sleeve fits tightly to be formed with described spark plug protective sleeve and seals under the pressure effect of connecting plate.
As the improvement of technique scheme, the inwall of described rubber sleeve is formed with inner groove, rubber sleeve is provided with the via hole communicated with described inner groove, described connecting plate holding is in described inner groove, and the installation journal stirrup on connecting plate stretches out from described via hole.
Further improvement, the wall thickness of described rubber sleeve near described inner groove position comparatively other position wall thickness forms thickening part greatly.
Further, described rubber sleeve is cap lid-like.
Further, on the periphery wall of described spark plug protective sleeve, radial direction is extended flange, and described rubber sleeve is nested with its lower limb and described flange after on spark plug protective sleeve and fits tightly.
Preferably; described cylinder head is provided with step; described exterior seal ring is shelved on step described in this; exterior seal ring is subject to the axial compressive force of described flange and between spark plug protective sleeve and the outer chamber wall in chain chamber, forms axial seal, the lower surface of spark plug protective sleeve because of the existence of exterior seal ring and the internal chamber wall in chain chamber have interval apart.
Further, described cylinder head is provided with stud, the installation journal stirrup of described connecting plate is connected by screw and is fixed on stud described in this.
The beneficial effects of the utility model are: the utility model adopting said structure, by increasing a rubber sleeve in the upper end of spark plug protective sleeve, built-in connecting plate in rubber sleeve is also fixed on cylinder head by installing journal stirrup, when fastening installation journal stirrup, connecting plate can bring pressure to bear on the lower limb of rubber sleeve, this lower limb and spark plug protective sleeve is utilized to fit to be formed and seal, while making spark plug protective sleeve have good water proof and dust proof effect, an axial location can also be formed to spark plug protective sleeve, spark plug protective sleeve is well avoided to occur loosening in locomotive ride, the phenomenons such as noise, prevent unnecessary risk, in this configuration, rubber sleeve can select the rubber that cost is low, have excellent sealing and compression performance, be conducive to obtaining good water proof and dust proof effect, this structure is particularly adopted to make spark plug cap not need special one-tenth special shape, can complete general various forms of spark plug cap, improve the versatility of design, be conducive to reducing costs.
Accompanying drawing explanation
Fig. 1 is the mounting structure of spark plug protective sleeve in traditional design;
Fig. 2 is the installation decomposing schematic representation of spark plug protective sleeve in traditional design;
Fig. 3 is front projection figure of the present utility model;
Fig. 4 is the generalized section of Fig. 3 middle section A-A ';
Fig. 5 and Fig. 6 is decomposing schematic representation of the present utility model respectively.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
With reference to Fig. 3 ~ Fig. 6, the mounting structure of a kind of spark plug protective sleeve of the present utility model, comprise cylinder head 1, be positioned at side, chain chamber 11 in described cylinder head 1 and be provided with spark plug protective sleeve 2, described spark plug protective sleeve 2 is connected along the bottom of its axis and the internal chamber wall 12 in chain chamber 11, cylinder head 1 is stretched out through after the outer chamber wall 13 in chain chamber 11 in upper end, spark plug protective sleeve 2 is with in chain chamber 11, outer chamber wall 12, respectively by interior between 13, exterior seal ring 3, 4 sealings, external engine is flowed out to avoid lubricating fluid, the upper end of described spark plug protective sleeve 2 is provided with rubber sleeve 5, rubber sleeve 5 selects cost lower, have the rubber of excellent sealing and compression performance, connecting plate 6 is built-in with in described rubber sleeve 5, connecting plate 6 described in this is provided with journal stirrup 61 is installed, described installation journal stirrup 61 is fastenedly connected on cylinder head 1, fastening means is preferably as follows: described cylinder head 1 is provided with stud 15, the installation journal stirrup 61 of described connecting plate 6 is connected by screw and is fixed on stud 15 described in this, the lower limb of rubber sleeve 5 fits tightly to be formed with described spark plug protective sleeve 2 and seals under the pressure effect of connecting plate 6.
When fastening installation journal stirrup 61, connecting plate 6 can bring pressure to bear on the lower limb of rubber sleeve 5, this lower limb and spark plug protective sleeve 2 is utilized to fit to be formed and seal, while making spark plug protective sleeve 2 have good water proof and dust proof effect, an axial location can also be formed to spark plug protective sleeve 2, well avoid spark plug protective sleeve 2 to occur loosening in locomotive ride, the phenomenon such as noise; This structure is adopted to make spark plug cap not need special one-tenth special shape, can complete general various forms of spark plug cap, improve the versatility of design, be conducive to reducing costs.
In the present embodiment; preferably; the inwall of described rubber sleeve 5 is formed with inner groove 51; rubber sleeve 5 is provided with the via hole 52 communicated with described inner groove 51; the holding of described connecting plate 6 is in described inner groove 51, and the installation journal stirrup 61 on connecting plate 6 stretches out from described via hole 52, makes when fixed connecting plate 6; connecting plate 6 can force in the lower cell wall of inner groove 51, thus realizes the sealing between rubber sleeve 5 and spark plug protective sleeve 2.Certainly; the structure making rubber sleeve 5 be close to spark plug protective sleeve 2 formation sealing for realizing connecting plate 6 pairs of spark plug protective sleeve 2 forces is not limited to said structure, can also adopt as arranged bulge loop on the inwall of rubber sleeve 5, connecting plate 6 being pressed in the first-class structure of bulge loop.
In the present embodiment, well effectively seal for making to be formed between rubber sleeve 5 and spark plug protective sleeve 2, the wall thickness of preferred described rubber sleeve 5 near described inner groove 51 position comparatively other position wall thickness forms thickening part 53 greatly.
Wherein the shape of rubber sleeve 5 can be diversified, and in the present embodiment, described rubber sleeve 5 is preferably cap lid-like.
More reliable for making rubber sleeve 5 install on spark plug protective sleeve 2, on the periphery wall of described spark plug protective sleeve 2, radial direction is extended flange 21, and described rubber sleeve 5 is nested with its lower limb and described flange 21 after on spark plug protective sleeve 2 and fits tightly.
As the present embodiment further preferably; described cylinder head 1 is provided with step 14; described exterior seal ring 4 is shelved on step 14 described in this; exterior seal ring 4 is subject to the axial compressive force of described flange 21 and between spark plug protective sleeve 2 and the outer chamber wall 13 in chain chamber 11, forms axial seal; at the axial direction of spark plug protective sleeve 2, the lower surface of described spark plug protective sleeve 2 because of the existence of exterior seal ring 4 and the internal chamber wall 12 in chain chamber 11 have interval apart.This structure has abandoned in traditional design the structure utilizing the radial seal of sealing O shape circle; make to remain with certain gap between the internal chamber wall 12 in the lower surface of spark plug protective sleeve 2 and chain chamber 11, thus effectively avoid in traditional design because two Metal Phases contact the exception collision sound brought.
The above, just better embodiment of the present utility model, but the utility model is not limited to above-described embodiment, as long as it reaches technique effect of the present utility model with any same or similar means, all should fall within protection range of the present utility model.
Claims (7)
1. the mounting structure of a spark plug protective sleeve, comprise cylinder head (1), be positioned at chain chamber (11) side in described cylinder head (1) and be provided with spark plug protective sleeve (2), described spark plug protective sleeve (2) is connected along the bottom of its axis and the internal chamber wall (12) of chain chamber (11), cylinder head (1) is stretched out through after the outer chamber wall (13) in chain chamber (11) in upper end, spark plug protective sleeve (2) is with in chain chamber (11), outer chamber wall (12, 13) respectively by interior between, exterior seal ring (3, 4) seal, it is characterized in that: the upper end of described spark plug protective sleeve (2) is provided with rubber sleeve (5), connecting plate (6) is built-in with in described rubber sleeve (5), connecting plate described in this (6) is provided with journal stirrup (61) is installed, described installation journal stirrup (61) is fastenedly connected on cylinder head (1), the lower limb of rubber sleeve (5) fits tightly to be formed with described spark plug protective sleeve (2) and seals under the pressure effect of connecting plate (6).
2. the mounting structure of a kind of spark plug protective sleeve according to claim 1; it is characterized in that: the inwall of described rubber sleeve (5) is formed with inner groove (51); rubber sleeve (5) is provided with the via hole (52) communicated with described inner groove (51); described connecting plate (6) holding is in described inner groove (51), and the installation journal stirrup (61) on connecting plate (6) stretches out from described via hole (52).
3. the mounting structure of a kind of spark plug protective sleeve according to claim 2, is characterized in that: the wall thickness of described rubber sleeve (5) near described inner groove (51) position comparatively other position wall thickness forms thickening part (53) greatly.
4. the mounting structure of a kind of spark plug protective sleeve according to claim 1 or 2 or 3, is characterized in that: described rubber sleeve (5) is cap lid-like.
5. the mounting structure of a kind of spark plug protective sleeve according to claim 4; it is characterized in that: on the periphery wall of described spark plug protective sleeve (2), radial direction is extended flange (21), described rubber sleeve (5) is nested with its lower limb and described flange (21) after spark plug protective sleeve (2) is upper and fits tightly.
6. the mounting structure of a kind of spark plug protective sleeve according to claim 5; it is characterized in that: described cylinder head (1) is provided with step (14); described exterior seal ring (4) is shelved on step described in this (14); exterior seal ring (4) is subject to the axial compressive force of described flange (21) and between spark plug protective sleeve (2) and the outer chamber wall (13) of chain chamber (11), forms axial seal, the lower surface of spark plug protective sleeve (2) because of the existence of exterior seal ring (4) and the internal chamber wall (12) of chain chamber (11) have interval apart.
7. the mounting structure of a kind of spark plug protective sleeve according to claim 1; it is characterized in that: described cylinder head (1) is provided with stud (15), the installation journal stirrup (61) of described connecting plate (6) is connected by screw and is fixed on stud described in this (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420496254.2U CN204088880U (en) | 2014-08-29 | 2014-08-29 | A kind of mounting structure of spark plug protective sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420496254.2U CN204088880U (en) | 2014-08-29 | 2014-08-29 | A kind of mounting structure of spark plug protective sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204088880U true CN204088880U (en) | 2015-01-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420496254.2U Expired - Lifetime CN204088880U (en) | 2014-08-29 | 2014-08-29 | A kind of mounting structure of spark plug protective sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204088880U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140782A (en) * | 2015-09-03 | 2015-12-09 | 温州智信机电科技有限公司 | Spark plug sleeve sheathing machine |
| CN105173150A (en) * | 2015-09-03 | 2015-12-23 | 温州智信机电科技有限公司 | Spark plug sleeve protector with material detection |
-
2014
- 2014-08-29 CN CN201420496254.2U patent/CN204088880U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140782A (en) * | 2015-09-03 | 2015-12-09 | 温州智信机电科技有限公司 | Spark plug sleeve sheathing machine |
| CN105173150A (en) * | 2015-09-03 | 2015-12-23 | 温州智信机电科技有限公司 | Spark plug sleeve protector with material detection |
| CN105140782B (en) * | 2015-09-03 | 2016-04-20 | 温州智信机电科技有限公司 | Spark plug sleeve sheath machine |
| CN105173150B (en) * | 2015-09-03 | 2017-05-17 | 沈祥明 | Spark plug sleeve protector with material detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150107 |