CN209892413U

CN209892413U - Miniature pump for small household electrical appliances

Info

Publication number: CN209892413U
Application number: CN201920590935.8U
Authority: CN
Inventors: 赵海杰; 潘俊; 龙小杰
Original assignee: Zhejiang Dawei Electronic Co Ltd
Current assignee: Zhejiang Dawei Electronic Co Ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-01-03
Anticipated expiration: 2029-04-26

Abstract

The utility model provides a little household electrical appliances micropump, including motor and casing, the casing including the transmission chamber, the transmission chamber in be provided with piston, connecting piece and eccentric wheel, eccentric position integrated into one piece of eccentric wheel have the projection, the connecting piece lower extreme be provided with and supply the projection to establish and establish the pivoted mounting hole. The utility model provides a guarantee under the condition of cost, not fragile, the longer little household electrical appliances micropump of life.

Description

Miniature pump for small household electrical appliances

Technical Field

The utility model relates to a micropump, especially a little household electrical appliances micropump.

Background

The miniature pump for small household appliances refers to a machine for conveying fluid or pressurizing fluid in small household appliances, and is commonly used for water dispensers, water purifiers, coffee makers and the like, and the miniature pump for small household appliances in the prior art is shown in fig. 1: comprises a shell 1 and a motor 2 arranged at the lower end of the shell 1, wherein the shell 1 comprises a water inlet end 11, a water outlet end 12, a compression seat 13, a compression cover 14, a cover plate 15 and a base 16, a transmission cavity 3 is formed between the cover plate 15 and the base 16, a compression cavity 4 is formed between the compression seat 13 and the compression cover 14, the compression seat 13 is clamped between the cover plate 15 and the compression cover 14, a piston 5 and an eccentric wheel 6 are arranged in the transmission cavity 3, the piston 5 comprises a plurality of conical columns 51 formed by extending the compression seat 13 towards the transmission cavity 3, the conical columns 51 are clamped with a connecting piece 7, the eccentric wheel 6 is arranged on a rotating shaft of the motor 2, a connecting rod 8 is arranged between the eccentric wheel 6 and the connecting piece 7, one end of the connecting rod 8 is inserted at the eccentric position of the eccentric wheel 6, and the other end of the connecting rod 8 is inserted at the center of the connecting piece 7, the compression cavity 4 comprises a plurality of air outlet holes, and air outlet valve plates 9 are movably arranged at the positions corresponding to the air outlet holes.

However, in the prior art, when the eccentric wheel swings through the connecting rod and the connecting piece, the connecting rod can simultaneously receive the reaction force of parts and fluid in the pump body, and the joints of the connecting rod, the connecting plate and the eccentric wheel bear large force, so that the connecting rod and the connecting plate are easy to damage, and the service life of the connecting rod is influenced. Since the connecting rod is usually made of metal material, thickening the connecting rod may result in high cost of the product.

SUMMERY OF THE UTILITY MODEL

The utility model provides a little household electrical appliances micropump with low costs, it is not fragile, life is longer to prior art not enough, the utility model provides a.

In order to achieve the purpose, the utility model provides a little household electrical appliances micropump, including motor and casing, the casing including the transmission chamber, the transmission chamber in be provided with piston, connecting piece and eccentric wheel, the eccentric position integrated into one piece of eccentric wheel have the projection, the connecting piece lower extreme be provided with and supply the projection to insert and establish the pivoted mounting hole.

The technical scheme has the advantages that: because its metal material that uses usually of connecting rod, replace the connecting rod by eccentric wheel integrated into one piece's projection, when can avoiding thickening the problem that leads to product cost too high to the connecting rod, make the product not fragile, life is longer.

The utility model discloses can further set up to: the mounting hole is internally provided with a bearing, and the convex column is inserted in an inner hole of the bearing.

Through further setting, use the bearing to share the pump in the use, spare part and fluidic reaction force in the pump body are received to projection and mounting hole inner wall, and further messenger's product is not fragile, the life-span is longer.

The utility model discloses can further set up to: the piston protruding including a plurality of bowls of compressing the complex with the connecting piece, the bowl form protruding constitute by elastic material, the connecting piece corresponds the spliced pole of being connected including a plurality of and each bowls of form are protruding, wear to be equipped with between bowl form arch and the spliced pole and be connected screw between them.

Through further setting up, compare prior art, connecting piece and piston joint complex in-process, there is the gap between the two in connecting piece and the piston, drives the in-process of piston swing at the connecting piece, takes place the friction, the problem of colliding with, and it can be through carrying out the spiro union to both, connects more stably, and further messenger's product is not fragile, the life-span is longer.

The utility model discloses can further set up to: the spliced pole all is provided with the circular terminal surface that supplies both to level the contact and connect with bowl form arch, spliced pole and bowl form arch between be provided with a plurality of annular protruding muscle of concentric distribution of centre of a circle along circular terminal surface

Through further setting up, the spliced pole is connected the back through the level and smooth contact of circular terminal surface with the bowl form arch, and annular protruding muscle supports and forms sealedly between the two.

The utility model discloses can further set up to: the annular convex rib is arranged on the circular end surface of the connecting column, which is contacted with the bowl-shaped bulge.

By further arrangement, the bowl-shaped bulge is usually made of elastic materials, so that the annular convex rib is arranged on the connecting column, and the implementation is easy.

The utility model discloses can further set up to: the screw is arranged at the center of the circular end face in a penetrating mode.

Through further setting, wear to establish in the center department of circular terminal surface, it is more even to the bellied application of force of bowl form, makes the transmission between connecting piece and piston more stable.

The utility model discloses can further set up to: the screw head of its one end of screw is located the compression chamber, and its other end and spliced pole looks spiro union.

Through further setting, because bowl form arch is elastic material, be difficult to with screw other end spiro union cooperation.

The utility model discloses can further set up to: and a gasket which is in interference fit with the bowl-shaped bulge is sleeved at the screw head.

Through further setting, through the packing ring of establishing between screw head and bowl form arch of support, when guaranteeing that the screw head compresses tightly on the bowl form arch, it is even to the protruding application of force of bowl form to promote the leakproofness of the protruding spiro union department of bowl form.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

fig. 2 is a top view of an embodiment of the present invention;

FIG. 3 is a cross-sectional view of FIG. 2 (B-B) in an embodiment of the present invention;

fig. 4 is a partial exploded view of an embodiment of the present invention;

fig. 5 is a partial exploded view of an embodiment of the present invention.

Detailed Description

The embodiment of the miniature pump for small household appliances of the utility model is shown in figures 1-5: including motor 1 and casing 2, casing 2 intake end 21, play water end 22, compression seat 23, compression lid 24, apron 25, base 26, by compression seat 23 and the compression chamber 27 that 24 amalgamations formed of compression lid and by the transmission chamber 28 that apron 25 and base 26 amalgamation formed, transmission chamber 28 in be provided with piston 3, connecting piece 4 and eccentric wheel 5, eccentric position integrated into one piece of eccentric wheel 5 have projection 51, connecting piece 4 lower extreme be provided with and supply projection 51 to insert and establish pivoted mounting hole 41. The compression cavity 27 comprises a plurality of air outlet holes 271, and air outlet valve plates 6 are movably arranged at positions corresponding to the air outlet holes 231. The mounting hole is provided with a bearing 7, and the convex column 51 is inserted in an inner hole of the bearing 7. Piston 3 including a plurality of bowl form arch 31 with the 4 compression fit of connecting piece, bowl form arch 31 constitute by elastic material, connecting piece 4 is including a plurality of spliced poles 42 that correspond the connection with each bowl form arch 31, wear to be equipped with between bowl form arch 31 and the spliced pole 42 and be connected screw 8 between them. The spliced pole 42 all is provided with the circular terminal surface 9 that supplies both to level the contact and connect with bowl form arch 31, spliced pole 4 and bowl form arch 31 between be provided with a plurality of annular protruding muscle 421 along the concentric distribution of the centre of a circle of circular terminal surface 9. The annular rib 421 is arranged on the circular end surface 9 of the connecting column 42, which is in contact with the bowl-shaped bulge 31. The screw 8 is arranged in the center of the circular end face 9 in a penetrating mode. The screw 8 has a screw head 81 at one end thereof located in the compression chamber 27 and a connecting post 42 at the other end thereof screwed together. The screw head 81 is sleeved with a gasket 10 which is in interference fit with the bowl-shaped bulge 31.

The above examples are only one of the preferred embodiments of the present invention, and the general changes and substitutions performed by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.

Claims

1. The utility model provides a little household electrical appliances micropump, including motor and casing, the casing including the transmission chamber, the transmission chamber in be provided with piston, connecting piece and eccentric wheel, its characterized in that: the eccentric position of the eccentric wheel is integrally provided with a convex column, and the lower end of the connecting piece is provided with a mounting hole for the convex column to be inserted and rotated.

2. The small household appliance micropump of claim 1, wherein: the mounting hole is internally provided with a bearing, and the convex column is inserted in an inner hole of the bearing.

3. The small-sized household electrical appliance micro-pump according to claim 1 or 2, characterized in that: the piston protruding including a plurality of bowls of compressing the complex with the connecting piece, the bowl form protruding constitute by elastic material, the connecting piece corresponds the spliced pole of being connected including a plurality of and each bowls of form are protruding, wear to be equipped with between bowl form arch and the spliced pole and be connected screw between them.

4. The small household appliance micropump of claim 3, wherein: the spliced pole all is provided with the circular terminal surface that supplies both to level the contact and connect with bowl form arch, spliced pole and bowl form arch between be provided with a plurality of annular protruding muscle of the concentric distribution of centre of a circle along circular terminal surface.

5. The small household appliance micropump of claim 4, wherein: the annular convex rib is arranged on the circular end surface of the connecting column, which is contacted with the bowl-shaped bulge.

6. The small household appliance micropump of claim 4, wherein: the screw is arranged at the center of the circular end face in a penetrating mode.

7. The small household appliance micropump of claim 4, wherein: the screw head of its one end of screw is located the compression chamber, and its other end and spliced pole looks spiro union.

8. The small household appliance micropump of claim 7, wherein: and a gasket which is in interference fit with the bowl-shaped bulge is sleeved at the screw head.