CN102734012B - Fuel pump installation structure and bicycle provided with same - Google Patents
Fuel pump installation structure and bicycle provided with same Download PDFInfo
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- CN102734012B CN102734012B CN201210105364.7A CN201210105364A CN102734012B CN 102734012 B CN102734012 B CN 102734012B CN 201210105364 A CN201210105364 A CN 201210105364A CN 102734012 B CN102734012 B CN 102734012B
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- lip part
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Abstract
The invention relates to a fuel pump installation structure and a bicycle provided with the same. The fuel pump installation structure includes a fuel box which is provided with a pump inserting opening, and a fuel pump which is provided with a pump flange part, and an installation plate. A pump body of the fuel pump is arranged in the fuel box, a flange inner face of the pump flange part is arranged on an outer face of a peripheral part of the pump inserting opening, and a sealing member is arranged between the outer face and the inner face of the flange. The fuel pump is provided with a connecting member. The installation plate is arranged on the flange outer face of the pump flange part, and the installation plate is formed by a circular plate which is provided with an open part in the center. A base of the connecting member passes through the open part. The installation part is provided with multiple connecting parts which are arranged on the periphery of the installation plate and are to be connected with the fuel box. The installation plate includes a narrow part, and in the installation plate, the interval between adjacent connecting parts which are provided with the narrow parts is shorter than the interval between adjacent connecting parts which are not provided with the narrow parts. The fuel pump installation structure is especially suitable for bicycles, and other vehicles.
Description
Technical field
The present invention relates to fuel pump mounting structural and be provided with the cart of this fuel pump mounting structural, relate more particularly to the fuel pump mounting structural of the fuel tank for installing petrolift or be arranged to the carts such as such as small-sized cart (scooter).
Background technique
In the vehicle of some such as carts, such as small-sized cart (scooter-typ e motorcycle), article storage case is arranged on the below of rider's seat.In this small-sized cart, fuel tank may be arranged in rear side or foot treadle (step board) below of article storage case.In order to from fuel tank to the internal-combustion engine of this small-sized cart supply fuel, preferably, petrolift is configured to be arranged on inside fuel tank in layout design, so that petrolift and fuel tank are integrally turned to a unit.
For the mounting structure for petrolift being installed to fuel tank of prior art, between the outer side surface (case sealing surface) of the known periphery at fuel tank opening portion and the lip part of petrolift, packing ring is set, and by using the fastening pieces such as such as screw from the mounting plate of top (outside) the fastening annular of lip part, thus petrolift is fixed to fuel tank, as shown in patent documentation 1 (Japanese Unexamined Patent Publication 09-242636 publication).
In this fuel pump mounting structural, the connector element be communicated with petrolift is configured to insert and from lip part outwardly from lip part central authorities.This connector element extends and makes not interfere with each other in different directions from each other.
Mounting plate is formed as the annular in the central portion with circular open (hole), passes from mounting plate to make the connector element extended in different directions from each other.
Such as, for guaranteeing for being connected to the connecting length of fuel pipe installed towards internal-combustion engine, these two from lip part outwardly and the connector element extended to the periphery of described lip part on different directions from each other needs predetermined length in the direction of extension.Therefore, the opening portion of mounting plate needs diameter to pass from this opening portion even as big as making two connector elements, and therefore the external diameter of mounting plate must be greater than the diameter of opening portion.
In order to ensure the area of the lip part pushed down by mounting plate, the diameter of lip part needs to increase along with the increase of the diameter of mounting plate.Therefore, fuel pump mounting structural of the prior art causes the expansion of the diameter of the opening portion of the lip part of petrolift, mounting plate, fuel tank etc. usually.
The expansion of these component diameter causes the increase of total distance to be sealed, is not therefore preferred for the sealability guaranteed between fuel tank and lip part.
Summary of the invention
Consider that above-mentioned situation contemplates the present invention, and the diameter that the object of this invention is to provide opening portion, lip part and the mounting plate that can reduce fuel tank increases the fuel pump mounting structural of the sealability guaranteed between the lip part of petrolift and fuel tank.
Another object of the present invention is to provide the cart being provided with the fuel pump mounting structural with above-mentioned feature.
According to the present invention, can realize above-mentioned purpose and other objects by arranging as follows, on the one hand, fuel pump mounting structural comprises: fuel tank, and it is provided with pump insert port; Petrolift, it supplies fuel to the internal-combustion engine of vehicle, and described petrolift has pump lip part; And mounting plate, it has the external frame larger than the external frame of described pump lip part,
Wherein, described pump lip part has flange inner face, under the state that the pump main body of described petrolift is arranged in inside described fuel tank, described flange inner face is positioned over the outer side surface of the peripheral region of described pump insert port, and between described outer side surface and described flange inner face, there is sealing component, and described petrolift is provided with connector element, described connector element is given prominence to from the flange outer sides face of described pump lip part in the opposite direction along the side with described fuel tank place and is extended along described flange outer sides face
Wherein, described mounting plate is arranged in the flange outer sides face of described pump lip part, the annular slab that described mounting plate is formed with opening portion by central part is formed, the base portion of described connector element runs through described opening portion, described mounting plate has the multiple joining portion to be bonded to described fuel tank arranged in the circumference of described mounting plate, and
Wherein, described mounting plate comprises narrow portion, in described narrow portion, distance between the outer periphery of described mounting plate and the peristome of described opening portion is formed narrow, and in described mounting plate, the interval between the adjacent described joining portion therebetween with described narrow portion is than not having the interval between the adjacent described joining portion of described narrow portion short therebetween.
In preferred implementation in above-mentioned or embodiment, it is desirable that, the peristome of described narrow portion is formed with nick shaped recess.
It is desirable that, the length of the straight line apart from described narrow portion position farthest from described narrow portion to described peristome is formed the ultimate range across described opening portion.
Narrow portion can be arranged in the position in described pump lip part except following region: the opposed area relative with described connector element; Region between described opposed area; The imaginary opposed area relative with the imaginary extension part of described connector element, described imaginary extension part extends on the direction that the corresponding bearing of trend to described connector element is contrary; And the region between described imaginary opposed area.
Opening portion desirably can be set to that the connector element making to be arranged on described pump lip part only can pass following A/F, and the length of the straight line apart from described narrow portion position farthest at described A/F place from described narrow portion to described peristome is the ultimate range across described opening portion.
Can also it is desirable that, described narrow portion be arranged at two positions positioned opposite across described opening portion in described mounting plate respectively.
Can also it is desirable that, described connector element comprises the Fuel connector and power connector that are connected to described pump main body.
Can preferably, described Fuel connector becomes on the direction of minimum range in the distance of the main body framework apart from vehicle and extends.
It is to be expected that the top of the top of described Fuel connector and described power connector is arranged in directions opposite each other.Described Fuel connector can be arranged in than the position of described power connector near described internal-combustion engine.
In another aspect of this invention, additionally provide a kind of cart, this cart is provided with the fuel pump mounting structural of the combination having independent above-mentioned feature structure or have above-mentioned feature structure.
According to the fuel pump mounting structural of the invention described above, mounting plate can be constructed such that the part except the opening portion of formation narrow portion of ring flat-plate component has wider width, thereby increases the rigidity of this part and effectively produces necessary surface pressure.
In addition, in the part being formed with narrow portion of opening portion, interval between the neighbouring joint parts therebetween with narrow portion is shorter than each other interval between the neighbouring joint parts therebetween without narrow portion, makes it possible to the pressure guaranteeing self-pumping lip part on fuel tank near narrow portion.Therefore, it is possible to the sealability between the outer side surface effectively obtaining pump lip part and pump insert port along the whole periphery of pump lip part and pump insert port.
Pump in accordance with the present invention mounting structure, when not enlarged openings portion, the opening portion of the connector element given prominence to from pump lip part by mounting plate can be inserted, make, without the need in order to expand the region producing surface pressure between mounting plate and pump lip part and the diameter expanding mounting plate and pump lip part, to thus prevent expansion or the increase of pump lip part diameter.
In addition, according to cart of the present invention, when bunch and fuel pipe contact with each other and be rubbing against one another, can prevent bunch and fuel pipe from damaging or being wound around, also ensure that installation capability and after sales service quality.
From the following explanation carried out with reference to accompanying drawing, essence of the present invention and other features will be made clearer.
Accompanying drawing explanation
In the accompanying drawings:
Fig. 1 is the stereogram of the fuel tank of the fuel pump mounting structural applied according to the embodiment of the present invention;
Fig. 2 is the sectional view intercepted along the line II-II in Fig. 1;
Fig. 3 is the decomposition section of the fuel tank of the fuel pump mounting structural applied according to the embodiment of the present invention;
Fig. 4 is the planimetric map of the fuel tank associated with fuel pump mounting structural according to the embodiment of the present invention;
Fig. 5 comprises Fig. 5 A and Fig. 5 B, is the planimetric map for illustration of how mounting plate to be installed to petrolift for fuel pump mounting structural according to the embodiment of the present invention;
Fig. 6 illustrates planimetric map fuel pump mounting structural mounting plate being according to the embodiment of the present invention installed to the state of petrolift;
Fig. 7 shows the major component of the fuel pump mounting structural being applied to the vehicles such as small-sized cart or the stereogram of parts;
Fig. 8 comprises Fig. 8 A and Fig. 8 B, for the planimetric map how mounting plate being installed to petrolift is described, the modified example of fuel pump mounting structural is according to the embodiment of the present invention shown; And
Fig. 9, to illustrate that mounting plate is installed to the planimetric map of the state of petrolift, illustrates the modified example of fuel pump mounting structural according to the embodiment of the present invention.
Embodiment
Hereinafter, with reference to Fig. 1 to Fig. 9, fuel pump mounting structural is according to the embodiment of the present invention described.Shall also be noted that with reference to the diagram in accompanying drawing or as installed to vehicle, the state of cart particularly stood use term " on ", D score, " right side ", " left side " and expression direction etc. similar term.
Fig. 7 illustrates the fuel pump mounting structural according to an embodiment of the invention that can be applied to small-sized cart etc.
(fuel pump mounting structural)
As shown in Figures 1 to 3, fuel pump mounting structural is by fuel tank 1, the petrolift 2 being installed to fuel tank 1 and the mounting plate 3 that petrolift 2 supported to fuel tank 1 being assembled, then mounting plate 3 being fixed to fuel tank 1 side and petrolift 2 being installed to the structure of fuel tank 1.
(fuel tank)
As illustrated in fig. 1 and 2, fuel tank 1 comprises nowel portion 11 and top box portion 12, and nowel portion 11 is vessel form, and top box portion 12 is the lid form of the opening covering nowel portion 11.Nowel lip part 11A is formed to project upwards along the whole upper shed periphery in nowel portion 11 in side.Top box lip part 12A is formed to project upwards along the whole lower periphery in top box portion 12 in side.
Nowel lip part 11A and top box lip part 12A is engaged to form fuel tank 1.
Joining portion between nowel lip part 11A and top box lip part 12A is used as in the case lip part 13 along the edged forms of the whole periphery of fuel tank 1.As shown in Figure 1, mounting hole 14 is formed at case lip part 13.In the present embodiment, although fuel tank 1 is formed by metallic material, also resin material can be used shaping integratedly by blow moiding method.
As shown in Figure 1, tubular filling fuels mouth 4 is formed at the appropriate location in top box portion 12.Lid 5 is releasably attached to filling fuels mouth 4.As shown in Figures 2 and 3, pump insert port 6 is formed at top box portion 12.
Pump lip part 22 as illustrated after a while is positioned over the outer side surface (above) 15 of the peripheral region of pump insert port 6.As shown in Figure 3, the outer side surface 15 of pump insert port 6 peripheral region is formed slightly lower than the outer circumferential face adjacent with outer side surface 15.In the pump insert port side of outer side surface 15, sealing component contact (abutting) face 17 is formed as lower than outer side surface 15 by the stepped part 16 arranged along the periphery of outer side surface 15.
Bolt acceptance division 18 is used as the tapped hole at joining portion, and bolt acceptance division 18 to be formed and along surrounding's layout of outer side surface 15 along above-below direction.Configuration and the interval of bolt acceptance division 18 will be described after a while.
(petrolift)
As shown in Figures 2 and 3, petrolift 2 mainly comprises: pump main body 21, and this pump main body 21 forms internally-arranged type (in-t ank type) the pump unit being equipped with pressure regulator 21A, safety relief valve 21B etc.; Pump lip part 22, this pump lip part 22 is arranged in above pump main body 21 with disc-shape; With the power connector 23 and the Fuel connector 24 that are used as multiple connector element, this power connector 23 and Fuel connector 24 are given prominence to from the flange outer sides face of the pump lip part 22 being connected to pump main body side and extend along flange outer sides face above contrary with fuel tank 1 one side.
In addition, as shown in Figures 2 and 3, the sucting 25 for the fuel in draws fuel case 1 is arranged at below pump main body 21.Sucting 25 is provided with filter 26 in its unshowned ingress, and fuel is filtered by filter 26.Pump main body 21 and sucting 25 are configured to have the thickness and width that are enough to through the pump insert port 6 being formed at fuel tank 1 respectively.
The intermediate portion that detection unit 27 is arranged on pump main body 21 used up by the fuel used up for detecting fuel.One end of sensor (sender gauge) 28 is rotatably supported fuel and uses up detection unit 27.The other end of sensor 28 is provided with float 29.Because float 29 is along with the motion of melt surface of fuel, detection unit 27 can detect fuel residual capacity by the detection to the motion of sensor 28 used up by fuel.Sensor 28 is closely kept rotationally along pump main body 21, make float 29 and sensor 28 can via the pump insert port 6 of fuel tank 1 by together with insert.
The cable being connected to power connector 23 is laid (route) uses up detection unit 27 and pump main body 21 power unit to fuel.The bunch 7 illustrated after a while is connected to power connector 23.In pump main body 21, be configured with the unshowned pipe for the fuel imported from sucting 25 being supplied to Fuel connector 24.
Pump lip part 22 is formed by plectane, and the profile line of pump lip part 22 is configured to the circle roughly concentric with the profile line of pump main body 21 in plan view.Particularly, the shape that the pump lip part 22 above pump main body 21 has is consistent with by rotating the shape that the edge shape plate above pump main body 21 formed.
As shown in Figure 3, under pump main body 21, sucting 25, float 29 etc. are contained in fuel tank 1 state, petrolift 2 is installed in fuel tank 1, and the lower peripheral edge surface of pump lip part 22 (flange inner face) 22A is placed on the outer side surface 15 of the pump insert port 6 in top box portion 12.In addition, the sealing component 10 formed by such as resin O type ring etc. is maintained between the lower peripheral edge surface 22A of pump lip part 22 and the sealing component surface of contact 17 in top box portion 12.
As shown in Fig. 5 (Fig. 5 A and Fig. 5 B), positioning salient 22B is arranged on the appropriate location in (flange outer sides face) above pump lip part 22.Positioning salient 22B is mounted to the locating aperture 34 (illustrating after a while) of mounting plate 3 to position pump lip part 22 and mounting plate 3.
As shown in Figure 5A, the narrow portion 32 of mounting plate 3 and recess 32A (illustrating all after a while) configure in the mode that can not overlap each other in the following region of pump lip part 22 (the shadow region 22C in figure), this region comprises: the opposed area of power connector 23 and Fuel connector 24, and this opposed area is relative with Fuel connector 24 with power connector 23; Region between power connector 23 and the opposed area of Fuel connector 24; The imaginary opposed area of power connector 23 and Fuel connector 24, this imaginary opposed area is relative with the imaginary extension part on the direction that each bearing of trend of power connector 23 and Fuel connector 24 is contrary; And the region between these imaginary opposed area.
In addition, in Fig. 5 B and Fig. 6, the imaginary extension part extended in opposite direction of power connector 23 is denoted as the region be limited between straight line L1 and straight line L2, and in Fig. 5 B and Fig. 6, the imaginary extension part extended in opposite direction of Fuel connector 24 is denoted as the region be limited between straight line L3 and L4.
The opposed area relative with Fuel connector 24 with power connector 23 and in the relative imaginary opposed area of the imaginary extension part extended in the opposite direction of power connector 23 and Fuel connector 24 and be arranged between opposed area and each region be arranged between imaginary opposed area is called as and comprises the region that all above-mentioned zones are projected in the region in (flange outer sides face) above pump lip part 22, the shadow region 22C namely in Fig. 5 B.
As shown in Figs. 4-6, consider assembling property or the precision of the power connector 23 relevant to pump lip part 22 and Fuel connector 24, bunch 7, fuel pipe 8 etc., angle between the bearing of trend determining power connector 23 and Fuel connector 24, namely the set angle of power connector 23 and Fuel connector 24, is preferably set to minimum angles.
Power connector 23 is for the unshowned connection be connected between the electric distribution of the pressure regulator 21A of pump main body 21 outfit etc. and bunch 7 (see Fig. 7).Power connector 23 comprises: connector base portion 23A, outstanding then (flange outer sides face) extension above pump lip part 22 in a predetermined direction of this connector base portion 23A (flange outer sides face) above pump lip part 22; With power coupler 23B, this power coupler 23B is installed to one end of connector base portion 23A in their extension direction.
Fuel connector 24 comprises: fuel discharge pipe 24A, and this fuel discharge pipe 24A is used for the fuel drawn from the sucting 25 be arranged at below pump main body 21 to discharge; With the connector portion 24B on the top as Fuel connector 24.Fuel discharge pipe 24A is from the substantially central portion of pump lip part 22 outwardly, and bending to extend along pump lip part 22 in a predetermined direction.Connector portion 24B is installed to the end of fuel discharge pipe 24A.The end of connector portion 24B is at right angles bending relative to the bearing of trend of fuel discharge pipe 24A connects nozzle (top) 24B 1 to be formed.The fuel pipe 8 (see Fig. 7) being connected to the internal-combustion engine of vehicle, i.e. cart is connected to and connects nozzle 24B1.
(mounting plate)
As shown in Fig. 2, Fig. 3, Fig. 5 and Fig. 6, mounting plate 3 is the round members with the profile (configure) larger than the profile of pump lip part 22, and centre has circular open portion 31 wherein.Mounting plate 3 is positioned on the outer side surface (above) of pump lip part 22.The connector base portion 23A of the power connector 23 and fuel discharge pipe 24A of Fuel connector 24 is arranged in the mode can inserted by opening portion 31.
As illustrated in Figures 5 and 6, narrow portion 32 is formed in mounting plate 3 as follows: nick shaped recess 32A is formed at a part for the peristome of opening portion 31, makes the distance between the outer periphery of mounting plate 3 and the peristome with recess 32A of opening portion 31 become minimum.Ultimate range R across opening portion 31 is configured to by recess 32A.Particularly, the narrow portion 32 with recess 32A is set at the peristome of opening portion 31, becomes maximum to make the A/F between the opposite edges of opening portion 31.
Only the A/F at the ultimate range R place of mounting plate 3 is configured to both power connector 23 and Fuel connector 24 are passed therethrough.As shown in Figure 5 B, the minimum range D limited to one end of another connector (Fuel connector 24) in the direction of extension with length in power connector 23 and Fuel connector 24 from the one end in the direction of extension with a connector (power connector 23) of shorter length power connector 23 and Fuel connector 24 can have random lengths, as long as this minimum range D can by the A/F at the ultimate range R place of opening portion 31.This means that minimum range D can be set to be less than ultimate range R.Preferably, other parts (peristome) without recess 32A of opening portion 31 are designed to have diameter little as far as possible, with the near zone of the base portion of the fuel discharge pipe 24A around the connector base portion 23A of power connector 23 and Fuel connector 24.
As mentioned above, less diameter around the peristome of connector base portion 23A and fuel discharge pipe 24A allows mounting plate 3 to be pressed onto near the central authorities of pump lip part 22, which thereby enhances the structure durability of opposing owing to the pressure of the vibration of the bunch 7 such as illustrated after a while and fuel pipe 8 etc.
As shown in Figure 5 and Figure 6, (5) bolt-inserting hole 33A, 33B, 33C, 33D and the 33E be used as to be bonded to the joining portion in the top box portion 12 of fuel tank 1 is formed at mounting plate 3 along the circumference of mounting plate 3.
As shown in Figure 5A, in bolt-inserting hole 33A, 33B, 33C, 33D and 33E, there is recess 32A (with narrow portion 32) between bolt-inserting hole 33A and 33E, interval P1 between bolt-inserting hole 33A and 33E be configured to little therebetween without recess 32A (and narrow portion 32) adjacent bolt-inserting hole between each interval P2, the interval namely between bolt-inserting hole 33A and 33B, between bolt-inserting hole 33B and 33C, between bolt-inserting hole 33C and 33D and between bolt-inserting hole 33D and 33E.
Locating aperture 34 be formed at mounting plate 3 away from the position of position forming narrow portion 32 and recess 32A.As mentioned above, locating aperture 34, for location, makes the positioning salient 22B be arranged on above pump lip part 22 be mounted in locating aperture 34.
In fuel pump mounting structural according to the present embodiment, as shown in Figures 2 and 3, under the state that the pump main body 21 of petrolift 2 is arranged in fuel tank 1, pump lip part 22 is engaged to the circumferential outside face 15 of the pump insert port 6 in top box portion 12.Meanwhile, sealing component 10 be maintained at sealing component surface of contact 17 and pump lip part 22 lower peripheral edge surface 22A between to guarantee sealability.
Mounting plate 3 is positioned on pump lip part 22, and bolt-inserting hole 33A, 33B, 33C, 33D and the 33E be formed in mounting plate 3 is located relative to each bolt acceptance division 18 being formed in top box portion 12, then when being provided with metal washer 9A, bolt 9B is screwed into each threaded receiver portion 18.
The threaded receiver portion 18 being formed at top box portion 12 is configured to the identical interval layout of the interval layout of the bolt-inserting hole 33A to 33E providing and be formed in mounting plate 3, makes threaded receiver portion 18 corresponding with each bolt-inserting hole 33A to 33E.
As shown in Figure 7, the bunch 7 being connected to power connector 23 is configured in the rear of fuel tank 1, and the fuel pipe 8 being connected to the connection nozzle 24B1 of Fuel connector 24 is installed in fuel tank front.
(installation method)
Hereinafter, the method or the mode that petrolift 2 will be installed to fuel tank 1 are described.
As shown in Figure 3, sealing component 10 is arranged in the below of the pump lip part 22 of petrolift 2, inserts sucting 25, sensor 28, float 29 and pump main body 21 via sealing component 10.
Thereafter, the sucting 25 of petrolift 2, sensor 28, float 29 and pump main body 21 are inserted into fuel tank 1 from the pump insert port 6 in the top box portion 12 of fuel tank 1.Sealing component 10 is arranged on the sealing component surface of contact 17 of the peripheral region of the pump insert port 6 in top box portion 12.
As shown in Figure 5 B, in the power connector 23 of pump lip part 22 being arranged at petrolift 2 in outstanding mode and Fuel connector 24, the opening portion 31 of mounting plate 3 is run through in the one end (the connection nozzle 24B1 of joint 24B) extending longer Fuel connector 24 in the direction of extension.
Thereafter, the part corresponding with the minimum range D between Fuel connector 24 and power connector 23 is mounted to the opening corresponding with the ultimate range R of the opening portion 31 across mounting plate 3, to be inserted from opening portion 31 on the top of power coupler 23B, i.e. power connector 23.In like fashion, Fuel connector 24 and power connector 23 can insert from opening portion 31, thus mounting plate 3 are assembled to pump lip part 22.
Then, as shown in Figure 6, adjusting mounting plate 3 makes the positioning salient 22B be arranged on pump lip part 22 in outstanding mode be mounted in the locating aperture 34 of mounting plate 3.
After pump lip part 22 and mounting plate 3 are located thus, complete the location between the bolt-inserting hole 33A to 33E of mounting plate 3 and each bolt acceptance division 18 being formed at top box portion 12.Interval between bolt-inserting hole 33A and 33E therebetween with narrow portion 32 and recess 32A in mounting plate 3 is set to be less than each interval between other adjacent bolt insert ports.Similarly, the bolt acceptance division 18 being formed at top box portion 12 is with the interval layout configurations identical with the interval layout of bolt insert port 33A to 33E.Thus, the bolt-inserting hole 33A to 33E in mounting plate 3 achieves the location of pump lip part 22 in sense of rotation with the location of bolt acceptance division 18 simultaneously, thus, pump main body 21 is positioned over the appropriate location in fuel tank 1.
Metal washer 9A and bolt 9B is assembled and be screwed in each bolt-inserting hole 33A to 33E to complete the installation of petrolift 2 and fuel tank 1.
(being applied to the example of small-sized cart)
Fig. 7 shows the stereogram fuel tank 1 with above-mentioned fuel pump mounting structural being according to the embodiment of the present invention applied to vehicle, the i.e. state of small-sized cart.
As shown with 7, via unshowned support (bracket), by means of the bolt 42 being inserted into mounting hole (see Fig. 1), the rear cabinet lip part 13 of fuel tank 1 is fixed to a pair aftercarriage frame member 41, and this aftercarriage frame member 41 is alongst arranged at the left and right sides of small-sized cart.By means of the bolt 42 of two mounting holes of the insertion left and right sides, case lip part 13 before fuel tank 1 is fixed to the front portion of the crossbeam 43 of aftercarriage frame member 41, this crossbeam 43 is laterally arranged in this between aftercarriage frame member 41.
As shown in Figure 7, in the present embodiment, the connector portion 24B of Fuel connector 24 is arranged to extending on the direction having a minimum range with the aftercarriage frame member 41 in left side, and the fuel pipe 8 being connected to 24B top, connector portion is installed to forward unshowned internal-combustion engine and oil sprayer 44.
Fuel connector 24 is arranged in than the position of power connector 23 near the internal-combustion engine of the vehicles such as such as cart, and be connected to the fuel pipe 8 of Fuel connector 24 by the aftercarriage frame member 41 easily guided to the left side of locating with minimum range, and be locked into aftercarriage frame member 41 by locking component 45, be then directed to internal-combustion engine along aftercarriage frame member 41.
This mounting structure allows fuel pipe 8 to have the shortest length, is applied to the pressure of the base portion of Fuel connector 24 when being reduced in Vehicular vibration thus.
If unlocked from aftercarriage frame member 41 by fuel pipe 8, fuel pipe 8 fluffs, and which thereby enhances fuel pipe 8 relative to the installation of Fuel connector 24 or dismantling property.On the other hand, if fuel pipe 8 is locked onto aftercarriage frame member 41, fuel pipe 8 is tauted the vibration making it possible to reduce fuel pipe.Set angle between Fuel connector 24 and fuel pipe 8 can be set to 90 degree to 180 degree, is preferably about 90 degree.
The bunch 7 being connected to power connector 23 is arranged along the direction contrary with fuel pipe 8.Therefore, when small-sized cart is driven, even if when bunch 7 and fuel pipe 8 contact with each other and be rubbing against one another, also can prevent bunch 7 and fuel pipe 8 from damaging or being wound around, and also ensure that installation or assembling property and after sales service quality.
(beneficial effect)
According to above-mentioned fuel pump mounting structural, because the diameter of pump lip part 22 is determined by the external diameter of mounting plate 3, and mounting plate 3 needs to guarantee the minimum plate width being enough to the outer side surface 15 pump lip part 22 of petrolift 2 being pressed onto top box portion 12, is preferably set as little as much as possible by the diameter of the opening portion 31 of mounting plate 3.
Then, in order to above-mentioned purpose, in the present embodiment, be set to the ultimate range R across opening portion 31 in the narrow portion 32 of mounting plate 3 and the A/F at recess 32A position, and power connector 23 and Fuel connector 24 only can by having the opening portion 31 of ultimate range R.Particularly, distance D (see Fig. 5 B) from the one end of the side (power connector 23) in the direction of extension with shorter length power connector 23 and Fuel connector 24 to the other end of the opposing party's (Fuel connector 24) in the direction of extension with length in power connector 23 and Fuel connector 24 can adopt any distance, as long as distance D can through the A/F of the ultimate range R had across opening portion 31.Therefore, ultimate range R can be set as roughly the same with the distance D between power connector 23 and Fuel connector 24.
In addition, because recess 32A is arranged in like fashion, the opening diameter not having other parts of recess 32A of opening portion 32 can be reduced, guarantee the area of contact between mounting plate 3 and pump lip part 22 thus as much as possible.Therefore, it is possible to prevent the diameter expanding mounting plate 3 and pump lip part 22 in order to ensure the contact area between mounting plate 3 and pump lip part 22.
While the enlarged-diameter preventing mounting plate 3 and pump lip part 22 as mentioned above, result, the part of the formation recess 32A of the opening portion 31 in mounting plate 3 has less of being received in the region that top box portion 12 upwards pressure with the side of contact of pump lip part 22, make the rigidity of this part become less than other parts, the surface pressure therefore for generation necessity is disadvantageous.
In order to solve this inferior position, the present invention is constructed such that in the joining portion engaged by bolt 9B and each bolt-inserting hole 33A to 33E, and the interval P2 between the interval between the neighbouring joint parts being formed with recess 32A therebetween and the interval P1 between bolt-inserting hole 33A and 33E are set to than the adjacent bolt-inserting hole therebetween without recess 32A is short.
Therefore, sealing component 10 is firmly pressed between pump lip part 22 and top box portion 12 by the position can in mounting plate 3 with narrow portion 32 and recess 32A, to guarantee the sealability between pump lip part 22 and top box portion 12.
In fuel pump mounting structural according to the present embodiment, the narrow portion 32 of pump lip part 22 and recess 32A are configured to not overlapping with the shadow region 22C (not having the region of recess) in Fig. 5 B.Therefore, even if the power owing to the above-below direction of the vibration etc. of vehicle is applied to power connector 23 as connector element and Fuel connector 24, and be also applied to the bunch 7 and fuel pipe 8 that are connected to power connector 23 and Fuel connector 24, the pressure owing to vibration also can be prevented to be applied directly to the part being formed with narrow portion 32 and recess 32A.
As a result, sealability deterioration when the vehicle operating being provided with this fuel pump mounting structural can be prevented.
(other mode of executions)
In above-mentioned disclosing, although described fuel pump mounting structural according to the embodiment of the present invention, it should be noted that, the present invention this be can not be limited to the explanation of above-mentioned mode of execution and a part for above-mentioned mode of execution and accompanying drawing, and other mode of executions of roughly the same object and/or effect and embodiment be realized or obtain all within the scope of the invention.In addition, also it should be noted that the combination of the inventive features that scope of the present invention is not limited to be defined by the claims, but limited by each expectation combination of the specific features in disclosed all features.
Such as, in the above-described embodiment, although arrange a recess 32A at the peristome of the opening portion 31 of mounting plate 3, in embodiment variant, can be configured to as Fig. 8 (8A, 8B) be shown in recess 32B be set across a pair of opening portion 31 relative peristome place.
In above-mentioned modified example, each interval P1 between adjacent bolt patchhole 33A and 33F therebetween with narrow portion 32 and recess 32B in mounting plate 3 and between adjacent bolt patchhole 33C and 33D, than not having therebetween, each interval P2 between the adjacent bolt patchhole of recess 32B is short.Recess 32B in this variant can have the recessed amount less than the recessed amount of the recess 32A of aforementioned embodiments, and this provides advantage to the excessive minimizing of the contact area prevented between mounting plate 3 and pump lip part 32.
In the structure that a pair recess 32B is set, can make to have therebetween interval P1 between the neighbouring joint parts of recess 32B closer to or no better than each interval P2 between the neighbouring joint parts not getting involved narrow portion 32 and recess 32B therebetween.
In addition, in the configuration, although the difference between interval P1 and interval P2 is very little, but, if the positioning relation between the bolt-inserting hole 33A to 33F of mounting plate 3 and each bolt acceptance division 18 in top box portion 12 is inappropriate, can not clamping bolt 9B, can not locating effect be obtained thus.
In addition, according in the fuel pump mounting structural of above-mentioned mode of execution, because bolt acceptance division 18 is arranged on fuel tank 1 side, thus bolt 9B inserts from the top of mounting plate 3 to be screwed into each bolt acceptance division 18.But the juncture at the joining portion between fuel tank side and mounting plate 3 is not limited to which.That is, bolt can be arranged on fuel tank 1 side in the mode projected upwards, and can adopt nut fastening structure under the state of each bolt-inserting hole inserting mounting plate 3.
In addition, according in the fuel pump mounting structural of above-mentioned mode of execution, although pump lip part 22 and mounting plate 3 are configured to define as circle, the invention is not restricted to this structure, they the structure of based on fuel case 1 can be formed as various shape.
According to this embodiment variant, roughly the same and/or other beneficial effect can be expected.
Claims (10)
1. a fuel pump mounting structural, it comprises:
Fuel tank, it is provided with pump insert port;
Petrolift, it supplies fuel to the internal-combustion engine of vehicle, and described petrolift has pump lip part; And
Mounting plate, it has the external frame larger than the external frame of described pump lip part,
Wherein, described pump lip part has flange inner face, under the state that the pump main body of described petrolift is arranged in inside described fuel tank, described flange inner face is positioned over the outer side surface of the peripheral region of described pump insert port, and between described outer side surface and described flange inner face, there is sealing component, and described petrolift is provided with connector element, described connector element is given prominence to from the flange outer sides face of described pump lip part in the opposite direction along the side with described fuel tank place and is extended along described flange outer sides face
Wherein, described mounting plate is arranged in the flange outer sides face of described pump lip part, the annular slab that described mounting plate is formed with opening portion by central part is formed, the base portion of described connector element runs through described opening portion, described mounting plate has the multiple joining portion to be bonded to described fuel tank arranged in the circumference of described mounting plate, and
Wherein, described mounting plate comprises narrow portion, and in described narrow portion, the distance between the outer periphery of described mounting plate and the peristome of described opening portion is formed narrow, and in described mounting plate, the peristome of described narrow portion is formed with nick shaped recess,
It is characterized in that, the position of described nick shaped recess arrangement in described pump lip part except the imaginary extension part of described connector element of described narrow portion, described imaginary extension part extends on the direction that the corresponding bearing of trend to described connector element is contrary,
Interval between the adjacent described joining portion therebetween with described narrow portion is than not having the interval between the adjacent described joining portion of described narrow portion short therebetween.
2. fuel pump mounting structural according to claim 1, is characterized in that, the length of the straight line apart from described narrow portion position farthest from described narrow portion to described peristome is formed the ultimate range across described opening portion.
3. fuel pump mounting structural according to claim 1, is characterized in that, described narrow portion is arranged in the position in described pump lip part except following region: the opposed area relative with described connector element; Region between described opposed area; The imaginary opposed area relative with the imaginary extension part of described connector element.
4. fuel pump mounting structural according to claim 1, it is characterized in that, the connector element that described opening portion is configured to make to be arranged on described pump lip part only can pass following A/F, and the length of the straight line apart from described narrow portion position farthest at described A/F place from described narrow portion to described peristome is the ultimate range across described opening portion.
5. fuel pump mounting structural according to claim 1, is characterized in that, described narrow portion is arranged at two positions positioned opposite across described opening portion in described mounting plate respectively.
6. fuel pump mounting structural according to claim 1, is characterized in that, described connector element comprises the Fuel connector and power connector that are connected to described pump main body.
7. fuel pump mounting structural according to claim 6, is characterized in that, described Fuel connector becomes on the direction of minimum range in the distance of the main body framework apart from vehicle and extends.
8. fuel pump mounting structural according to claim 6, is characterized in that, the top of described Fuel connector and the top of described power connector are arranged in directions opposite each other.
9. fuel pump mounting structural according to claim 6, is characterized in that, described Fuel connector is disposed in than the position of described power connector near described internal-combustion engine.
10. one kind is provided with the cart of fuel pump mounting structural according to any one of claim 1 to 9.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-087045 | 2011-04-11 | ||
| JP2011087045A JP5664422B2 (en) | 2011-04-11 | 2011-04-11 | Fuel pump mounting structure and motorcycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102734012A CN102734012A (en) | 2012-10-17 |
| CN102734012B true CN102734012B (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210105364.7A Expired - Fee Related CN102734012B (en) | 2011-04-11 | 2012-04-11 | Fuel pump installation structure and bicycle provided with same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5664422B2 (en) |
| CN (1) | CN102734012B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020110311A1 (en) | 2018-11-30 | 2020-06-04 | 本田技研工業株式会社 | Fuel shutoff unit attachment structure |
| CN216887242U (en) * | 2022-02-17 | 2022-07-05 | 上海峰飞航空科技有限公司 | Leak protection oil tank and unmanned aerial vehicle |
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| CN1486398A (en) * | 2001-11-20 | 2004-03-31 | ������������ʽ���� | Automobile fuel supply device |
| CN1970379A (en) * | 2005-11-22 | 2007-05-30 | 本田技研工业株式会社 | Fuel pump configuration structure for mini motor vechile |
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| JP3569572B2 (en) * | 1995-08-09 | 2004-09-22 | 本田技研工業株式会社 | Fuel pump support structure |
| JPH09242636A (en) * | 1996-03-08 | 1997-09-16 | Suzuki Motor Corp | Installing structure of fuel pump |
| JP3938473B2 (en) * | 2001-01-23 | 2007-06-27 | 本田技研工業株式会社 | Fuel pump tank mounting structure |
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| JP2003074436A (en) * | 2001-08-31 | 2003-03-12 | Keihin Corp | Fuel supply device for internal combustion engine |
| JP3908931B2 (en) * | 2001-10-16 | 2007-04-25 | 本田技研工業株式会社 | Fuel supply unit for small vehicles |
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| JP2004245079A (en) * | 2003-02-12 | 2004-09-02 | Keihin Corp | Vehicular fuel supply unit |
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| JP5276848B2 (en) * | 2008-01-08 | 2013-08-28 | 株式会社ケーヒン | Fuel supply module |
| JP5160247B2 (en) * | 2008-01-17 | 2013-03-13 | 本田技研工業株式会社 | Fuel tank and fuel pump mounting structure |
| JP5235089B2 (en) * | 2008-03-27 | 2013-07-10 | 本田技研工業株式会社 | Fuel pump mounting structure |
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| CN1486398A (en) * | 2001-11-20 | 2004-03-31 | ������������ʽ���� | Automobile fuel supply device |
| CN1970379A (en) * | 2005-11-22 | 2007-05-30 | 本田技研工业株式会社 | Fuel pump configuration structure for mini motor vechile |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012219726A (en) | 2012-11-12 |
| JP5664422B2 (en) | 2015-02-04 |
| CN102734012A (en) | 2012-10-17 |
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