CN217768848U - Power supply insertion piece mounting structure on pump core of electric fuel pump - Google Patents
Power supply insertion piece mounting structure on pump core of electric fuel pump Download PDFInfo
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- CN217768848U CN217768848U CN202221871711.2U CN202221871711U CN217768848U CN 217768848 U CN217768848 U CN 217768848U CN 202221871711 U CN202221871711 U CN 202221871711U CN 217768848 U CN217768848 U CN 217768848U
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- moving back
- inserted sheet
- sealing joint
- power
- inclined plane
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Abstract
The utility model discloses a power inserted sheet mounting structure on electronic fuel pump core, control the interval including pump cover and two and install the power inserted sheet on the brush yoke, the position department that corresponds two power inserted sheets on the pump cover is provided with the mounting hole that stretches out on the power inserted sheet, every the sealing joint has all been moulded plastics at the middle part of power inserted sheet, and leaves the clearance between two sealing joint, be provided with big-end-up's on the sealing joint and prevent moving back the step, the pump cover inner circle is provided with the round and prevents moving back the recess, and the installation back prevents moving back the step and just supports on preventing moving back the recess. Compared with the prior art, the sealing ring is omitted, the sealing joint is injected on the power supply insertion sheet, sealing is realized by the adhesion between the anti-retreat step on the sealing joint and the anti-retreat groove on the pump cover, and therefore fuel oil is prevented from entering the brush holder.
Description
Technical Field
The utility model belongs to the technical field of fuel pump sealing connection, concretely relates to power inserted sheet mounting structure on electronic fuel pump core.
Background
The electric fuel pump is convenient for the current of a motor on the pump core assembly to be accessed, two power supply insertion pieces used for being connected with positive and negative electrodes are installed on the pump core assembly, and after the power supply insertion pieces are installed, a pump cover can be installed on the pump core assembly, thereby preventing fuel from entering, for ensuring the sealing property between the power supply insertion pieces and the pump cover, a sealing ring can be sleeved outside the power supply insertion pieces, for ensuring the sealing effect of the sealing ring, the pump cover can be in interference fit with a matched part of the pump cover, the sealing ring is compressed after being installed, but friction exists between the compressed part and the matched part of the sealing ring, so that the sealing ring after being assembled is easily damaged, the sealing ring loses effectiveness, sealing is further poor, meanwhile, the crushed slag can enter an oil pool, and an injection hole in the injection assembly is easily blocked.
SUMMERY OF THE UTILITY MODEL
The utility model discloses plan to provide a power plug-in sheet mounting structure on electronic fuel pump core, cancel the sealing washer, it has sealing joint to mould plastics on the power plug-in sheet, realizes sealedly through the laminating between sealing joint and the pump cover to prevent that the fuel from entering into in the brush yoke.
Therefore, the utility model discloses the technical scheme who adopts does: the utility model provides a power inserted sheet mounting structure on electronic fuel pump core, includes that pump cover and two control the interval and install the power inserted sheet on the brush yoke, the position department that corresponds two power inserted sheets on the pump cover is provided with the mounting hole that stretches out on the power inserted sheet, every sealing joint has all been moulded plastics at the middle part of power inserted sheet, and leaves the clearance between two sealing joint, be provided with big-end-up on the sealing joint and prevent moving back the step, the pump cover inner circle is provided with the round and prevents moving back the recess, and the installation back prevents moving back the step and just supports on preventing moving back the recess.
Preferably, the upper end outer ring of the sealing joint is sequentially provided with a first inclined plane, a first vertical transition plane and a second inclined plane from top to bottom, and a third inclined plane matched with the first inclined plane, a second vertical transition plane matched with the first vertical transition plane and a fourth inclined plane matched with the second inclined plane are sequentially arranged above the anti-retreat groove from top to bottom.
Preferably, each of the power supply insertion pieces is provided with a V-shaped anti-back-off tooth groove on the front side and the back side, and the anti-back-off tooth grooves on the front side and the back side are staggered.
Further preferably, each power supply insertion piece is provided with arc-shaped anti-withdrawal notches on the left side surface and the right side surface, and the anti-withdrawal notches on the left side surface and the right side surface are oppositely arranged left and right.
The utility model has the advantages that: compared with the prior art, a sealing ring is omitted, a sealing joint is injected on the power supply insertion piece, and sealing is realized through the attachment between the side surface of the anti-backing step on the sealing joint and the anti-backing groove on the pump cover, so that fuel oil is prevented from entering the brush frame; all having moulded plastics alone outside every power inserted sheet and having sealed joint for when moulding plastics, can adopt the mode of parting from top to bottom, for preventing moving back terminal surface under the step with sealed joint's die joint promptly, can effectively guarantee to prevent moving back the roughness of the side of step, thereby guarantee sealed effect.
Drawings
Fig. 1 is a schematic view of the present invention (no sealing joint is provided on the right power strip).
Fig. 2 is an enlarged view of M in fig. 1.
Fig. 3 is a schematic view of the middle sealing joint of the present invention.
Fig. 4 is a schematic diagram of the middle power supply insertion sheet of the present invention.
Detailed Description
The invention will be further described by way of examples with reference to the accompanying drawings:
as shown in fig. 1-4, a power supply insertion sheet mounting structure on a pump core of an electric fuel pump mainly comprises a pump cover 1, a brush holder 2, power supply insertion sheets 3 and a sealing joint 4, wherein the two power supply insertion sheets 3 are mounted on the brush holder 2 at left and right intervals, mounting holes 1a extending from the upper ends of the power supply insertion sheets 3 are formed in positions on the pump cover 1 corresponding to the two power supply insertion sheets 3, and the pump cover 1 covers the brush holder 2, which is the prior art and is not described herein again.
In order to ensure the sealing between the power supply insertion sheet 3 and the pump cover 1, the middle part of each power supply insertion sheet 3 is provided with a sealing joint 4 in an injection molding mode, and a gap is reserved between the two sealing joints 4. For guaranteeing sealed effect, be provided with big-end-up's on sealing joint 4 and prevent moving back step 4a, simultaneously correspondingly, be provided with the round in pump cover 1 inner circle and prevent moving back recess 1b, after the installation, prevent moving back step 4a and just support on preventing moving back recess 1b, prevent promptly that the lower terminal surface that moves back step 4a just with prevent moving back the up end laminating of recess 1 b. Preferably, the sealing joint 4 is injection moulded in a split-type manner.
Because clearance fit is between mounting hole and the power inserted sheet 3, for further guaranteeing sealed effect, make things convenient for the installation of sealing joint simultaneously, set gradually to first inclined plane 4b, first vertical transition face 4c and second inclined plane 4d in the upper end outer lane from the top down of sealing joint 4, correspondingly, prevent moving back recess 1b top from the top down set gradually with first inclined plane 4b matched with third inclined plane 1c, with first vertical transition face 4c matched with second vertical transition face 1d and with second inclined plane 4d matched with fourth inclined plane 1e. Because the distance between the upper end and the lower end of the anti-retreat step 4a is overlarge, two sections of inclined planes are arranged, and a transition plane is arranged between the two sections of inclined planes, so that the anti-retreat step has better sealing performance and is convenient to install. Preferably, the slopes of the two slopes are not equal, and in order to ensure the sealing performance, the slope of the upper end is greater than that of the lower end.
In order to prevent the sealing joint 4 from withdrawing from the power supply inserting sheet 3 during installation, V-shaped anti-withdrawal tooth grooves 3a are arranged on the front side surface and the rear side surface of each power supply inserting sheet 3, and the anti-withdrawal tooth grooves 3a on the front side surface and the anti-withdrawal tooth grooves 3a on the rear side surface are arranged in a staggered mode. In the embodiment, two anti-back-out tooth grooves 3a are arranged on the front side, and one anti-back-out tooth groove 3a is arranged on the rear side and is positioned between the two anti-back-out tooth grooves 3a on the front side.
For the position of sealing joint 4 and further guarantee that sealing joint 4 can not withdraw from power supply inserted sheet 3, all be provided with curved on the left and right sides face of every power supply inserted sheet 3 and prevent moving back scarce groove 3b, and prevent moving back on the left and right sides face and lack the groove 3b and control relative setting.
Claims (4)
1. The utility model provides a power inserted sheet mounting structure on electronic fuel pump core, includes that pump cover (1) and two control the interval and install power inserted sheet (3) on brush yoke (2), the position department that corresponds two power inserted sheet (3) on pump cover (1) is provided with mounting hole (1 a) that stretches out on power inserted sheet (3), its characterized in that: every sealing joint (4) have all been moulded plastics at the middle part of power inserted sheet (3), and leave the clearance between two sealing joint (4), sealing joint (4) are last to be provided with big-end-up and prevent moving back step (4 a), pump cover (1) inner circle is provided with the round and prevents moving back recess (1 b), and after the installation, prevent moving back step (4 a) and just support on preventing moving back recess (1 b).
2. The electric fuel pump core power insert mounting structure of claim 1, wherein: the upper end outer ring from the top down of sealing joint (4) sets gradually to first inclined plane (4 b), first vertical transition face (4 c) and second inclined plane (4 d), prevent moving back recess (1 b) top from the top down set gradually with first inclined plane (4 b) matched with third inclined plane (1 c), with first vertical transition face (4 c) matched with second vertical transition face (1 d) and with second inclined plane (4 d) matched with fourth inclined plane (1 e).
3. The electric fuel pump core power insert mounting structure of claim 1, wherein: each power supply inserting sheet (3) is provided with V-shaped anti-back tooth grooves (3 a) on the front side surface and the back side surface, and the anti-back tooth grooves (3 a) on the front side surface and the anti-back tooth grooves (3 a) on the back side surface are arranged in a staggered mode.
4. The electric fuel pump core power insert mounting structure of claim 1, wherein: every all be provided with curved anti-moving back scarce groove (3 b) on the left and right sides face of power inserted sheet (3), and relative setting about anti-moving back scarce groove (3 b) on the left and right sides face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221871711.2U CN217768848U (en) | 2022-07-14 | 2022-07-14 | Power supply insertion piece mounting structure on pump core of electric fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221871711.2U CN217768848U (en) | 2022-07-14 | 2022-07-14 | Power supply insertion piece mounting structure on pump core of electric fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217768848U true CN217768848U (en) | 2022-11-08 |
Family
ID=83875097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221871711.2U Active CN217768848U (en) | 2022-07-14 | 2022-07-14 | Power supply insertion piece mounting structure on pump core of electric fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217768848U (en) |
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2022
- 2022-07-14 CN CN202221871711.2U patent/CN217768848U/en active Active
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