CN209800139U - Overhead fuel pump assembly and connecting structure between flange cover and bracket in overhead fuel pump assembly - Google Patents

Abstract

The utility model provides a connection structure between overhead fuel pump assembly and flange lid and support wherein belongs to fuel pump technical field. It has solved the big scheduling problem of prior art design compressed air consumption. This overhead fuel pump assembly and flange lid and the connection structure between support wherein locate between the flange lid and the fuel pump support that is used for installing the fuel pump, locate the guide post on the flange lid and locate the uide bushing that supplies the outer end of guide post to pass on the fuel pump support including one end, keep away from on the uide bushing flange lid one serve along this uide bushing vertical extending direction protruding be equipped with be used for with the lateral part tight fit's of guide post jack catch etc.. This overhead fuel pump assembly and flange cover and the connection structure between support wherein's advantage lies in: through the tight fit of jack catch and guide post lateral part, realize the joint of blind flange and fuel pump support, not only need not again with the help of outside other connecting piece, realize used repeatedly moreover, reduced manufacturing cost, and the dismouting is more convenient, convenient.

Description

Overhead fuel pump assembly and connecting structure between flange cover and bracket in overhead fuel pump assembly

Technical Field

The utility model belongs to the technical field of the fuel pump, especially, relate to a connection structure between overhead fuel pump assembly and blind flange and support wherein.

Background

The overhead fuel pump assembly is installed in the oil tank, the entrance point of the fuel pump therein absorbs the oil in the oil tank, and the oil is pressurized through the fuel pump and conveyed to the engine through an oil outlet pipeline, a flange cover in the existing fuel pump assembly and a bracket for installing the fuel pump need to fix the fuel pump assembly and the bracket through other connecting pieces when being connected, and the connecting pieces are mostly disposable connecting pieces, namely, once the connecting pieces are installed, the connecting pieces are scrapped and can not be used again as long as being disassembled, and when the connecting pieces are disassembled and assembled, tools are needed mostly, and the disassembly and the assembly are inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, provide a connection structure of flange lid and fuel pump support in the fuel pump assembly that does not just can make flange lid and the leg joint of installation fuel pump and ability reuse with the help of outside connecting piece.

Another object of the present invention is to provide an easy-to-assemble/disassemble overhead fuel pump assembly.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the utility model discloses a connection structure of flange lid and fuel pump support among the fuel pump assembly locates between the flange lid and the fuel pump support that is used for installing the fuel pump, locate the guide post on the flange lid and locate the uide bushing that the outer end of confession guide post on the fuel pump support passed, its characterized in that including one end: and a clamping jaw used for being tightly matched with the side part of the guide column is convexly arranged on one end, far away from the flange cover, of the guide sleeve along the longitudinal extension direction of the guide sleeve. Through the tight fit of jack catch and guide post lateral part, realize the joint of blind flange and fuel pump support, not only need not again with the help of outside other connecting piece, realize used repeatedly moreover, reduced manufacturing cost, the dismouting is more convenient, convenient simultaneously.

In the connecting structure of the connecting flange cover and the fuel pump bracket in the fuel pump assembly, the outer end of the guide post is convexly provided with the abutting head for abutting against the end part of the outer end of the clamping jaw along the longitudinal extension direction of the guide post. The arrangement of the abutting head prevents the guide column from being separated from the clamping jaw in the using process, and provides the connecting strength and the using safety.

In the connecting structure of the connecting flange cover and the fuel pump bracket in the fuel pump assembly, one end of the abutting head, which is far away from the guide post, is of a conical structure. The resistance encountered when the clamping jaw is worn out through reducing the leaning head to prolong the service life of the leaning head, and is more labor-saving when being installed.

In the connecting structure of the connecting flange cover and the fuel pump bracket in the fuel pump assembly, the guide column comprises a first section of the guide column with the cross-sectional area larger than that of the channel in the guide sleeve and a second section of the guide column with the cross-sectional area not larger than that of the channel in the guide sleeve, one end of the first section of the guide column is tightly matched with the adjacent end on the guide sleeve when the guide column is matched with the clamping jaw, and the second section of the guide column is tightly matched with the clamping jaw after penetrating through the guide sleeve. The arrangement of the first section of the guide column enables the connecting surface between the first section of the guide column and the second section of the guide column to abut against the guide sleeve after assembly, thereby enhancing the supporting force on the guide column and improving the stability of the connection of the guide column during the operation of the assembly.

In the connecting structure of the connecting flange cover and the fuel pump bracket in the fuel pump assembly, the size and the shape of the cross section of the second section of the guide column are matched with the size and the shape of the cross section of the channel in the guide sleeve. The stability of the guide sleeve matched with the guide sleeve during working is further improved.

In the connecting structure of the connecting flange cover and the fuel pump bracket in the fuel pump assembly, the outer end of the guide column is a conical section in a conical shape, and the side part of the conical section is tightly matched with the clamping jaw; the guide post is of a tubular structure with a hollow interior. The conical section is beneficial to the claw to pass through during installation and is also beneficial to the claw to be separated from the conical section in a labor-saving manner during disassembly.

In the connecting structure of the connecting flange cover and the fuel pump bracket in the fuel pump assembly, the clamping jaw is in a hollow conical structure, and the relatively large end of the clamping jaw is connected with the guide sleeve. The tapered structure makes the area of the necking formed in the relatively small end of the jaw smaller, so as to be beneficial to the tight fit between the jaw and the guide column, and simultaneously further reduce the probability that the abutting head is separated from the adjacent end of the jaw during working.

In the connecting structure of the connecting flange cover and the fuel pump bracket in the fuel pump assembly, the clamping jaw comprises a plurality of clamping sheets which are arranged on the guide sleeve at intervals, the clamping sheets are arranged in an inclined inward mode, one end of each clamping sheet is connected with the guide sleeve, and the other end of each clamping sheet is close to the center line of the clamping jaw.

In the connecting structure of the connecting flange cover and the fuel pump bracket in the fuel pump assembly, the clamping sheet is an arc-shaped structure with a central angle positioned at the inner side; the cross section of one end of the clamping sheet far away from the guide sleeve is also of an arc structure with a central angle positioned at the inner side. The elastic deformation capacity of the clamping sheet is improved, so that the force of tight fit on the guide column is enhanced.

The overhead fuel pump assembly comprises a flange cover, a fuel pump and a fuel pump support, wherein the fuel pump is arranged on the fuel pump support, and the overhead fuel pump assembly is characterized in that: the assembly further comprises a cover frame connecting structure arranged between the flange cover and the fuel pump bracket, wherein the cover frame connecting structure is used for connecting the flange cover and the fuel pump bracket in the fuel pump assembly as claimed in any one of claims 1 to 9.

Compared with the prior art, this overhead fuel pump assembly and flange cover and the connection structure between the support wherein's advantage lies in: due to the arrangement of the clamping claw structure, the guide column on the flange cover is clamped with the fuel pump bracket, so that the guide column is tightly matched with the side part of the guide column, an external additional connecting piece is not needed, the repeated use is realized, the production cost is reduced, and the disassembly and the assembly are more convenient and convenient; the arrangement of the abutting head prevents the guide column from being separated from the clamping jaw in the use process, and provides the connection strength and the use safety; the arrangement of the first section of the guide post ensures that the connecting surface between the first section of the guide post and the second section of the guide post can be abutted against the guide sleeve after assembly, thereby enhancing the supporting force to the guide post and improving the stability of connection when the assembly works; the outer end of the guide post is provided with a conical section in a conical shape, so that the guide post can conveniently penetrate through the clamping jaw during installation and can conveniently be separated from the clamping jaw in a labor-saving manner during disassembly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 provides a schematic structural diagram of an embodiment of the present invention.

Fig. 2 provides a schematic cross-sectional view of an embodiment of the present invention.

Fig. 3 provides another schematic cross-sectional view of an embodiment of the present invention.

Fig. 4 provides an exploded view of an embodiment of the present invention.

Fig. 5 provides a schematic view of an angular explosion without a fuel filter according to an embodiment of the present invention.

Fig. 6 provides a schematic illustration of an alternative angle explosion without a fuel filter according to an embodiment of the present invention.

In the figure, a flange cover a, a fuel pump b, a fuel pump bracket c, an oil outlet pipe d, a one-way valve e, a pressure regulating valve f, a fuel filter g, an external plug h, a power line i, a guide post 1, a guide post first section 101, a guide post second section 102, a conical section 103, a guide sleeve 2, a clamping jaw 3, a clamping sheet 301, an abutting head 4 and a reinforcing part 5.

Detailed Description

The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.

Example 1

As shown in fig. 1 to 6, the connecting structure of the connecting flange cover and the fuel pump bracket in the fuel pump assembly, which is arranged between the flange cover a and the fuel pump bracket c for mounting the fuel pump b, comprises a guide post 1 with one end arranged on the flange cover a and a guide sleeve 2 arranged on the fuel pump bracket c for the outer end of the guide post 1 to pass through, preferably, the guide post 1 and the guide sleeve 2 are arranged in a one-to-one correspondence manner, and in addition, the number of the guide post 1 and the guide sleeve 2 is at least two, preferably, the guide post 1 and the guide sleeve 2 are arranged symmetrically or uniformly spaced, the connecting manner of the flange cover a and the guide post 1 can be detachable connection, such as clamping connection, or can be integrally formed by injection molding, preferably, the end of the guide post 1 connected with the flange cover a is provided with a plurality of reinforcing parts 5 for enhancing the connecting strength of the guide post 1 and the flange cover a, the reinforcing part 5 may be a raised head or a raised ring which is raised outside the guide post 1 to enhance the connection strength with the flange cover a, and the end of the guide sleeve 2 away from the flange cover a is raised with a claw 3 for tightly matching with the side of the guide post 1 along the longitudinal extension direction of the guide sleeve 2. Through the tight fit of jack catch 3 and 1 lateral part of guide post, realize the joint of blind flange a and fuel pump support c, not only need not again with the help of outside other connecting piece, realize used repeatedly moreover, reduced manufacturing cost, the dismouting is more convenient, convenient simultaneously.

Further, the jaw 3 is a conical structure with a hollow inner part, and the relatively large end of the jaw is connected with the guide sleeve 2. The tapered structure makes the area of the necking formed in the relatively small end of the jaw 3 smaller, so as to be beneficial to the tight fit with the guide column 1, and simultaneously, the probability that the abutting head 4 is separated from the adjacent end of the jaw 3 during working is further reduced.

In addition, the clamping jaw 3 comprises a plurality of clamping pieces 301 arranged on the guide sleeve 2 at intervals, the clamping pieces 301 are arranged obliquely inwards, one end of each clamping piece is connected with the guide sleeve 2, and the other end of each clamping piece is close to the central line of the clamping jaw 3. Preferably, the latch piece 301 has an arc structure with a central angle located inside, and further preferably, the cross section of the end of the latch piece 301 away from the guide sleeve 2 also has an arc structure with a central angle located inside. The elastic deformation capability of the clamping piece 301 is improved, so that the force of tight fit on the guide column 1 is enhanced.

Example 2

This embodiment is substantially the same as embodiment 1 except that: an abutting head 4 for abutting the end part of the outer end of the clamping jaw 3 is convexly arranged on the outer end of the guide column 1 along the longitudinal extension direction of the guide column 1. The provision of the abutment head 4 serves to prevent disengagement of the guide post 1 from the jaw 3 during use, providing strength of connection and safety of use, where the guide post 1 is preferably integral with the abutment head 4.

Preferably, the end of the abutment head 4 remote from the guide post 1 is of a conical configuration. The resistance encountered when penetrating out the jack catch 3 through reducing the head of keeping back 4 to the life of the head of keeping back 4 is prolonged, and is more labor-saving when being installed.

Example 3

This embodiment is substantially the same as embodiment 2 except that: the guide column 1 comprises a guide column first section 101 with the cross-sectional area larger than that of a channel in the guide sleeve 2 and a guide column second section 102 with the cross-sectional area not larger than that of the channel in the guide sleeve 2, one end of the guide column first section 101 is tightly matched with the adjacent end on the guide sleeve 2 when the guide column 1 is matched with the jaw 3, and the guide column second section 102 is tightly matched with the jaw 3 after penetrating through the guide sleeve 2. The arrangement of the first guide column section 101 enables the connecting surface between the first guide column section 101 and the second guide column section 102 to abut against the guide sleeve 2 after assembly, so that the supporting force on the guide column 1 is enhanced, and the connection stability of the guide column during assembly operation is improved.

Preferably, the cross-section of the second section 102 of the guide post is sized and shaped to fit the cross-section of the channel in the guide housing 2. The stability of the guide sleeve 2 matched with the guide sleeve in work is further improved. Preferably, the height of the second section 102 of the guide post is substantially the same as the height of the guide sleeve 2.

Example 4

This example is substantially the same as example 3, except that: the outer end of the guide column 1 is a conical section 103 in a conical shape, and the side part of the conical section 103 is tightly matched with the clamping jaw 3; the guide column 1 is a tubular structure with a hollow interior. The conical section 103 is arranged to facilitate the insertion of the clamping jaw 3 during installation and to facilitate the separation of the clamping jaw 3 during disassembly with less effort. Preferably, the height of the conical section 103 is substantially the same as the height of the jaw 3.

As shown in fig. 1-6, specific embodiments of the present overhead fuel pump assembly include, but are not limited to, the following examples.

This overhead fuel pump assembly, including blind flange a, fuel pump b and fuel pump support c, fuel pump b locates on fuel pump support c, its characterized in that: the assembly also comprises a cover frame connecting structure arranged between the flange cover a and the fuel pump bracket c, the cover frame connecting structure is the connecting structure for connecting the flange cover and the fuel pump bracket in the fuel pump assembly of any one of claims 1 to 9, an oil outlet pipe d communicated with the outlet end of the fuel pump b is arranged on the flange cover a, and a one-way valve e is arranged on the oil outlet pipe d; the oil outlet pipe d is also provided with a pressure regulating valve f, one end of the pressure regulating valve f is connected with the oil outlet pipe d, and the other end of the pressure regulating valve f is communicated with the outside; the inlet end of the fuel pump b is detachably connected with the fuel filter g. The pressure regulating valve f here opens when the oil pressure in the outlet pipe d is too high, so that excess fuel is discharged into the fuel tank.

The working principle is as follows: after the fuel pump assembly is electrified, fuel is sucked into the fuel pump assembly from a fuel tank by a pump core of the fuel pump b, impurities in the fuel are filtered by a fuel filter g, the fuel enters an oil outlet pipe d connected with a flange cover a after passing through the pump core of the fuel pump b and is conveyed to an engine of a motorcycle or an automobile, when the internal pressure of the fuel pump assembly reaches rated working pressure, a pressure regulating valve f arranged on the oil outlet pipe d is opened for pressure relief, redundant fuel is sent into the fuel tank, when the fuel pump assembly stops working, the pressure inside the assembly is lost, and a one-way valve e is closed to prevent the fuel in the engine from flowing backwards so as to ensure that the pressure in the fuel pipe is normal. The operation is circulated in such a way to adapt to different working environments.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of flange cover a, fuel pump b, fuel pump bracket c, oil outlet pipe d, check valve e, pressure regulating valve f, fuel filter g, external plug h, power cord i, guide post 1, guide post first section 101, guide post second section 102, tapered section 103, guide sleeve 2, claw 3, snap tab 301, abutment head 4, reinforcement member 5, etc. are used more extensively herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (10)

1. The utility model provides a connection structure of flange lid and fuel pump support in fuel pump assembly, locate between flange lid (a) and the fuel pump support (c) that are used for installing fuel pump (b), locate guide post (1) on flange lid (a) and locate guide sleeve (2) that the outer end of confession guide post (1) on fuel pump support (c) passed, its characterized in that including one end: and one end of the guide sleeve (2) far away from the flange cover (a) is convexly provided with a clamping jaw (3) used for being tightly matched with the side part of the guide column (1) along the longitudinal extension direction of the guide sleeve (2).

2. The connecting structure of the connecting flange cover and the fuel pump bracket in the fuel pump assembly according to claim 1, characterized in that the outer end of the guide post (1) is provided with a support head (4) for supporting the end of the outer end of the clamping claw (3) along the longitudinal extension direction of the guide post (1).

3. The connecting structure of the connecting flange cover and the fuel pump bracket in the fuel pump assembly according to claim 2, characterized in that the end of the abutment head (4) away from the guide post (1) is of a tapered structure.

4. The connecting structure of the connecting flange cover and the fuel pump bracket in the fuel pump assembly according to claim 2, characterized in that the guide post (1) comprises a first guide post section (101) with a cross-sectional area larger than that of the channel in the guide sleeve (2) and a second guide post section (102) with a cross-sectional area not larger than that of the channel in the guide sleeve (2), one end of the first guide post section (101) is tightly matched with the adjacent end of the guide sleeve (2) when the guide post (1) is matched with the claw (3), and the second guide post section (102) is tightly matched with the claw (3) after passing through the guide sleeve (2).

5. The fuel pump assembly connecting flange cover and fuel pump bracket of claim 4, wherein said guide post second section (102) has a cross-section sized and shaped to fit the cross-section of the channel in the guide sleeve (2).

6. The connecting structure of the connecting flange cover and the fuel pump bracket in the fuel pump assembly according to any one of claims 2 to 5, characterized in that the outer end of the guide post (1) is a conical section (103) in the shape of a cone, and the side of the conical section (103) is tightly matched with the clamping jaw (3); the guide post (1) is of a tubular structure with a hollow interior.

7. The connecting structure of the connecting flange cover and the fuel pump bracket in the fuel pump assembly according to claim 6, characterized in that the claw (3) is a conical structure with a hollow inside, and the relatively large end of the claw is connected with the guide sleeve (2).

8. The connecting structure of the connecting flange cover and the fuel pump bracket in the fuel pump assembly according to claim 7, characterized in that the clamping jaw (3) comprises a plurality of clamping pieces (301) which are arranged at intervals on the guide sleeve (2), the clamping pieces (301) are arranged obliquely inwards, one end of each clamping piece is connected with the guide sleeve (2), and the other end of each clamping piece is close to the central line of the clamping jaw (3).

9. The connecting structure of the connecting flange cover and the fuel pump bracket in the fuel pump assembly according to claim 8, wherein the snap piece (301) is an arc structure with a central angle at the inner side; the cross section of one end of the clamping sheet (301) far away from the guide sleeve (2) is also of an arc structure with a central angle positioned at the inner side.

10. The utility model provides an overhead fuel pump assembly, includes flange lid (a), fuel pump (b) and fuel pump support (c), fuel pump (b) locate on fuel pump support (c), its characterized in that: the assembly further comprises a cover frame connecting structure arranged between the flange cover (a) and the fuel pump bracket (c), wherein the cover frame connecting structure is the connecting structure for connecting the flange cover and the fuel pump bracket in the fuel pump assembly as claimed in any one of claims 1 to 9.