CN217582591U

CN217582591U - Welding rib structure of electronic water pump rear cover

Info

Publication number: CN217582591U
Application number: CN202221291617.XU
Authority: CN
Inventors: 黄磊; 王鸿; 陈道富; 潘徐刚
Original assignee: Taizhou Jiuyi Electromechanical Co ltd
Current assignee: Taizhou Jiuyi Electromechanical Co ltd
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2022-10-14
Anticipated expiration: 2032-05-24

Abstract

The utility model provides a welding muscle structure of lid behind electronic water pump belongs to electronic water pump technical field. It has solved the not enough technical problem of current lid welding structure welding effect behind the electronic water pump. This electronic water pump welding muscle structure includes casing and discoid back lid, the back is covered and is had around the protruding edge of annular that circumference was arranged, the uncovered inner edge of one end of casing has annular step groove, the protruding edge of annular can the adaptation be inserted and is located the step inslot just links firmly with this casing through the welding, the surface on the protruding edge of annular has around the rib bead that welds that circumference was arranged, works as the protruding edge of annular is inserted and is located when the step inslot the rib bead along the axial of back lid support by in the corner of step inslot wall. The utility model discloses do benefit to and promote the welded seal effect, also make the welding more firm simultaneously.

Description

Welding rib structure of electronic water pump rear cover

Technical Field

The utility model belongs to the technical field of, a welding muscle structure of lid behind electronic water pump is related to.

Background

The electronic water pump is a novel water pump which adopts a piezoelectric material as a power device, thoroughly realizes electronization from control to driving, completely controls liquid transmission by an electronic integrated system, and further realizes adjustability and accuracy of the liquid transmission.

Chinese patent No. CN210686342U discloses a connection structure of a bearing end cover and a pump body of a drain pump, which includes a motor, a lower pump body, an upper pump body and pump blades, the lower pump body is fixedly connected with the motor, the motor includes a rotating shaft, a motor end cover and a bearing end cover, an outer end face of the motor end cover is provided with a stepped first end cover step face and a stepped second end cover step face, an inner end face of the bearing end cover is provided with a third end cover step face and a fourth end cover step face which are respectively matched with the first end cover step face and the stepped second end cover step face, and a matching gap forms a first end cover flash area; the outer end face of the lower pump body is provided with a stepped first pump body step face and a stepped second pump body step face, the inner end face of the upper pump body is provided with a third pump body step face and a fourth pump body step face which are respectively matched with the first pump body step face and the second pump body step face, and a first pump body flash area is formed by matching gaps.

The connecting structure of the end cover and the pump body can improve the welding reliability, but the dimension of the joint surface of the pump body is often single after the welding flux is solidified, and the welding effect is still insufficient.

Disclosure of Invention

The utility model discloses to the above-mentioned problem that prior art exists, provide a welding muscle structure of lid behind electronic water pump, the utility model aims to solve the technical problem that: and the welding effect of the rear cover is improved.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a lid's welding muscle structure behind electronic water pump, includes casing and discoid back lid, it has around the protruding edge of annular that circumference was arranged to cover after, the open inner edge of one end of casing has annular step groove, the protruding edge of annular can the adaptation insert locate in the step inslot and link firmly through welding and this casing, its characterized in that, the surface on the protruding edge of annular has around the muscle bead that welds that circumference was arranged, works as the protruding edge of annular is inserted and is located when the step inslot the muscle bead that welds supports along the axial of back lid and lean on in the corner of step inslot wall.

The shell and the rear cover can generate local high temperature at the welding part through ultrasonic welding, the shell and the rear cover can be welded into a whole by pressing and cooling after the plastic piece is melted, the rear cover is provided with the annular convex edge, the open inner edge of the shell is provided with the step groove matched with the annular convex edge, and thus the welding area can be arranged in the area where the annular convex edge is opposite to the step groove, and the influence on the appearance or the inner cavity wall after the flowing solder is solidified is reduced. The rib bead is welded through the surface setting on the protruding edge of annular to it is relative with the corner of step inslot wall to weld the rib bead when locating the step inslot along inserting to make the protruding edge of annular, and when the rib bead pressurized that welds as the solder melts with the contact of step inslot wall, weld the rib bead and lean on to separate and make molten solder can flow at the crossing two faces of step inslot wall, and then form the welding at two dimensions during the solidification and link firmly, do benefit to and promote the welded seal effect, also make the welding more firm simultaneously.

In the welded rib structure of the rear cover of the electronic water pump, the welded rib protruding edge is positioned at the outer side edge of the annular protruding edge. The welding rib protruding edge can smoothly flow to two intersecting surfaces of the edge of the annular protruding edge after being melted, the situation that welding flux only stays on the horizontal plane is avoided, and the welding effect is guaranteed.

In the welded rib structure of the rear cover of the electronic water pump, the outer peripheral surface of the annular convex edge is in a conical surface shape, the inner edge surface of the step groove is in a conical surface shape, and the conical degree is matched with the outer peripheral surface of the convex edge. The outer peripheral surface of the annular convex edge gradually approaches the inner edge surface of the step groove along the radial direction in the welding process, so that the solder is pressed and diffused, the bonding area of the solder is increased, and the welding quality is improved.

In the welded rib structure of the rear cover of the electronic water pump, the outer edge surface of the welded rib ledge is in a conical surface shape and is coplanar with the outer peripheral surface of the annular ledge, and the welded rib ledge and the annular ledge are in smooth transition. Therefore, the welding rib close to the outer side can flow onto the outer peripheral surface of the annular convex edge more smoothly when being heated and melted, and the welding effect is further ensured.

In the welding rib structure of the rear cover of the electronic water pump, one side of the rear cover facing the shell is provided with a step surface arranged around the periphery of the annular convex edge, and when the rear cover is welded with the shell, the step surface gradually moves towards the end surface of the shell and can be abutted. Therefore, the step surface of the outer periphery of the annular convex edge is abutted against the shell during welding, so that the solder can be sealed in the inner space, and the influence on appearance and welding quality caused by the overflow and solidification of the solder is avoided.

In the welding rib structure of the rear cover of the electronic water pump, when the step surface abuts against the shell, the outer peripheral surface of the annular convex edge is spaced from the inner edge surface of the step groove. Therefore, a certain accommodating space is reserved between the outer peripheral surface of the annular convex edge and the inner edge surface of the step groove, the excessive waste of the solder before the step surface is abutted is avoided, and the welding effect is ensured.

Compared with the prior art, the utility model has the advantages as follows:

this lid behind electronic water pump welding muscle structure is when the welding muscle bead pressurized and the contact of step inslot wall melt as the solder, welds the muscle bead and supports to lean on to separate and make molten solder can flow at two crossing faces of step inslot wall, and then forms the welding at two dimensions during the solidification and link firmly, does benefit to and promotes the welded seal effect, also makes the welding more firm simultaneously.

Drawings

Fig. 1 is a schematic sectional view of the present embodiment before welding.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic view of a welded partial cross-sectional structure according to the present embodiment.

In the figure, 1, a housing; 11. a step groove;

2. a rear cover; 21. an annular convex edge; 22. welding rib protrusions; 23. a step surface.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-3, the electronic water pump includes a housing 1 and a disk-shaped rear cover 2, an edge of the rear cover 2 facing one side of the housing 1 has an annular protruding edge 21 arranged around the circumferential direction, an open inner edge at one end of the housing 1 has an annular stepped groove 11, the annular protruding edge 21 can be inserted into the stepped groove 11 and is fixedly connected with the housing 1 by welding, a rib-welding convex rib 22 arranged around the circumferential direction is arranged on the surface of the annular protruding edge 21, and the rib-welding convex rib 22 abuts against a corner of the inner wall of the stepped groove 11 along the axial direction of the rear cover 2 when the annular protruding edge 21 is inserted into the stepped groove 11. The shell 1 and the rear cover 2 can generate local high temperature at the welding position through ultrasonic welding, after a plastic piece is melted, the shell 1 and the rear cover 2 can be welded into a whole through compression and cooling, the rear cover 2 is provided with the annular convex edge 21, the step groove 11 is arranged on the inner edge of the opening of the shell 1 and is matched with the annular convex edge 21, and therefore the welding area can be arranged in the area where the annular convex edge 21 is opposite to the step groove 11, and the influence on the appearance or the inner cavity wall after the flowing solder is solidified is reduced. Through the surface at annular protruding edge 21 set up weld muscle bead 22, and make annular protruding edge 21 insert when locating in step groove 11 weld muscle bead 22 relative with the corner of step groove 11 inner wall, like this when welding muscle bead 22 pressurized and step groove 11 inner wall contact as the solder melts, weld muscle bead 22 and lean on to separate and make fused solder can flow at the crossing two faces of step groove 11 inner wall, and then form the welding at two dimensions during the solidification and link firmly, do benefit to and promote the welded seal effect, it is more firm also to make the welding simultaneously. Specifically, the bead protruding ridges 22 are located at the outer side edges of the annular protruding rim 21. Therefore, the welding rib convex edge 22 can smoothly flow to two intersecting surfaces at the edge of the annular convex edge 21 after being melted, the condition that the welding flux only stays on the horizontal plane is avoided, and the welding effect is ensured. The outer peripheral surface of the annular convex edge 21 is in a conical surface shape, the inner edge surface of the step groove 11 is in a conical surface shape, and the conical degree is matched with the outer peripheral surface of the convex edge. Thus, the outer circumferential surface of the annular flange 21 gradually approaches the inner edge surface of the step groove 11 along the radial direction in the welding process, so that the solder is favorably pressed and diffused, the bonding area of the solder is increased, and the welding quality is improved. The outer edge surface of the rib welding convex rib 22 is conical surface-shaped and is coplanar with the outer peripheral surface of the annular convex edge 21 and is in smooth transition. Thus, when being heated and melted, the welding rib convex edge 22 close to the outer side can flow onto the outer peripheral surface of the annular convex edge 21 more smoothly, and the welding effect is further ensured. The side of the rear cover 2 facing the housing 1 has a step surface 23 arranged around the outer circumference of the annular flange 21, which step surface 23 gradually moves towards the end surface of the housing 1 and can form an abutment when the rear cover 2 is welded to the housing 1. Thus, the step surface 23 of the outer periphery of the annular convex edge 21 abuts against the shell 1 during welding to seal the solder in the inner space, and the solder is prevented from overflowing and solidifying to influence the appearance and the welding quality. The outer peripheral surface of the annular flange 21 is spaced from the inner edge surface of the step groove 11 when the step surface 23 abuts the housing 1. Therefore, a certain accommodating space is reserved between the outer peripheral surface of the annular convex edge 21 and the inner edge surface of the step groove 11, excessive waste of solder before the step surface 23 is abutted is avoided, and the welding effect is ensured.

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

Claims

1. The utility model provides a welding muscle structure of lid behind electronic water pump, includes casing (1) and discoid back lid (2), back lid (2) are gone up to have around the annular protruding edge (21) that circumference was arranged, the uncovered inner edge of one end of casing (1) has annular step groove (11), the annular is protruding to be inserted along (21) ability adaptation and is located step groove (11) are interior and link firmly with this casing (1) through the welding, its characterized in that, the annular is protruding to have on the surface along (21) welds muscle bead (22) of arranging around circumference, works as annular is protruding to be inserted along (21) and is located when in step groove (11) weld the axial of muscle bead (22) along back lid (2) support by in the corner of step groove (11) inner wall.

2. The welded rib structure of the rear cover of the electronic water pump as claimed in claim 1, wherein the welded rib protruding rib (22) is located at an outer side edge of the annular protruding rim (21).

3. The welding rib structure of the rear cover of the electronic water pump as claimed in claim 1 or 2, wherein the outer peripheral surface of the annular convex edge (21) is conical, the inner peripheral surface of the step groove (11) is conical, and the taper of the inner peripheral surface of the step groove is matched with the outer peripheral surface of the convex edge.

4. The welding rib structure of the rear cover of the electronic water pump as claimed in claim 3, wherein the outer edge surface of the welding rib protruding rib (22) is conical surface-shaped and is coplanar and smoothly transited with the outer peripheral surface of the annular protruding edge (21).

5. The welding rib structure of the rear cover of the electronic water pump according to claim 1 or 2, wherein a side of the rear cover (2) facing the housing (1) has a step surface (23) arranged around the outer periphery of the annular flange (21), and the step surface (23) gradually moves toward the end surface of the housing (1) and can be abutted when the rear cover (2) is welded to the housing (1).

6. The welding rib structure of the rear cover of the electronic water pump as claimed in claim 5, wherein the outer circumferential surface of the annular flange (21) is spaced from the inner edge surface of the step groove (11) when the step surface (23) abuts against the housing (1).