CN214384269U

CN214384269U - Electronic expansion valve stop device

Info

Publication number: CN214384269U
Application number: CN202120301592.6U
Authority: CN
Inventors: 王晖
Original assignee: Shaoxing Latte Textile Co ltd
Current assignee: Shaoxing Latte Textile Co ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2021-10-12
Anticipated expiration: 2031-02-02

Abstract

The utility model provides an electronic expansion valve detent, including nut and inside and outside nested and screw fit's spring guide and sliding ring, spring guide's top is provided with locking portion, the nut includes the path section of spring guide suit and the big footpath section of radially stretching out, the path section is in spring guide's top correspondence department is provided with the pit, spring guide's top end assemble in the pit. Therefore, the spring guide rail can be conveniently fixed, and the automatic assembly is suitable.

Description

Electronic expansion valve stop device

Technical Field

The utility model relates to an electronic expansion valve, in particular to electronic expansion valve detent.

Background

The refrigeration system includes a compressor, an evaporator, a condenser, and a throttling element, and an electronic expansion valve is generally used as the throttling element, and the electronic expansion valve is used for throttling a refrigerant of the refrigeration system. In the conventional electronic expansion valve of the chinese patent application 20151001426.7, the end of the spring guide rail is directly inserted into the radial hole of the nut to limit the spring guide rail in the radial and axial directions. However, it is difficult to insert the ends of the spring rails directly into the radial holes of the nuts.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electronic expansion valve detent can conveniently fix the spring guide rail end, suitable machine automated assembly.

In order to solve the technical problem, the electronic expansion valve stopping device comprises a nut, a spring guide rail and a sliding ring, wherein the spring guide rail and the sliding ring are nested inside and outside and are in spiral fit, and an upper stopping part is arranged at the top end of the spring guide rail. Through automatic assembly, as long as spring guide top end aligns the pit, because the spring guide top has elasticity, spring guide top end self just can imbed the pit, makes things convenient for the automatic assembly of machine.

Further, the concave pit is a chute, and the top end of the spring guide rail inclines inwards.

Further, the angle between the inclined groove and the central line of the nut is 15-60 degrees, and the optimal angle is 30 degrees.

Further, the chute completely receives the top end of the spring guide.

Further, the lower extreme of spring guide rail is provided with down detent, spring guide rail lower detent includes the slope section of relative axial slope, and the end of slope section is equipped with straight section, the major diameter section is equipped with the inclined plane of fixing a position the slope section.

Furthermore, the electronic expansion valve stopping device also comprises a connecting piece, wherein the connecting piece is provided with an axial small hole, the lower end of the spring guide rail is provided with a straight section, and the straight section is inserted into the small hole.

Further, the nut major diameter section is provided with an axial small hole, the lower end of the spring guide rail is provided with a straight section, and the straight section is inserted into the small hole.

Optionally, the lower end of the spring guide rail is provided with a lower stop portion, and the lower stop portion of the spring guide rail extends radially to form a positioning portion abutting against the step surface.

Furthermore, the inclined section is two sections, and the inclination angle is gradually increased.

Drawings

Fig. 1 is a schematic perspective view of an electronic expansion valve stop device according to an embodiment of the present invention;

fig. 2 is a schematic front view of an electronic expansion valve stop device according to an embodiment of the present invention;

fig. 3 shows a schematic cross-sectional view of an electronic expansion valve stop arrangement in accordance with an embodiment of the present invention;

fig. 4 shows a schematic diagram of a spring guide rail according to an embodiment of the present invention.

Reference numbers in the figures: the spring guide rail comprises a nut 1, a large-diameter section 2, a small-diameter section 3, a spring guide rail 4, an upper stop part 5, a sliding ring 6, a connecting sheet 7, a lower stop part 8, an inclined section 81/82, a straight section 9 and a small hole 10.

Detailed Description

The following describes embodiments of the present invention in detail.

Referring to fig. 1 to 4, according to an embodiment of the present invention, the electronic expansion valve stopping device includes a nut 1, a large diameter section 2, a small diameter section 3, a spring rail 4, an upper stopping portion 5, a slip ring 6, a connecting sheet 7, and a lower stopping portion 8.

The nut 1 comprises a large-diameter section 2 and a small-diameter section 3 above the large-diameter section 2, the spring guide rail is nested outside the small-diameter section of the nut, the top end of the spring guide rail is provided with an upper stop part 5, and the lower end of the spiral guide rail 4 is provided with a lower stop part 8; the large-diameter section 2 is provided with a connecting piece 7, and the connecting piece 7 is connected with the large-diameter section of the nut and used for fixing the nut 1. The sliding ring 6 is matched with the spring guide rail 4, when the electronic expansion valve coil drives the magnetic rotor to rotate, the sliding ring 6 is pushed to slide up and down along the spring guide rail 4, when the sliding ring 6 moves to an upper dead point, the upper stopping part 5 limits the sliding ring 6, and when the sliding ring 6 moves to a lower dead point, the lower stopping part 8 limits the sliding ring 6. In general use, the connecting sheet is a metal sheet, the nut is pps plastic, and the connecting sheet and the nut are connected in an injection molding manner or in an interference fit manner.

Specifically, the small-diameter section 3 is provided with a pit at the top corresponding position of the spring guide rail 4, the top end of the spring guide rail is assembled in the pit, the pit is a chute, the top end of the spring guide rail inclines towards the inner side, and the top end aligns with the pit during the assembly of the spring guide rail. The proper angle between the inclined groove and the central line of the nut is 15-60 degrees, and the optimal angle between the inclined groove and the central line of the nut is 30 degrees. When the inclined groove completely accommodates the top end of the spring guide rail, the best effect of limiting the spring guide rail from axially and upwards falling out is achieved. The lower extreme of spring rail is provided with down detent, and spring rail lower detent includes relative axially inclined's slope section 8, and the slope section is two sections slope sections 81/82, and inclination progressively increases, and the end of slope section is equipped with straight section 9, and the major diameter section is equipped with the inclined plane of fixing a position the slope section. Through the supporting and positioning of the inclined surface, the position change of the spring guide rail is prevented when the spring guide rail is stressed and deformed, and the slip ring is prevented from slipping. The connecting piece 7 is provided with an axial small hole 10, the lower end of the spring guide rail is provided with a straight section 9, and the straight section 9 is inserted into the small hole 10, so that the circumferential position of the spring guide rail is limited. Of course, a connecting sheet is not needed, an axial small hole is formed in the large-diameter section of the nut, the straight section of the spring guide rail is inserted into the small hole, the circumferential position of the spring guide rail can be limited, and the connecting sheet 7 and the large-diameter section of the nut are provided with the axial small hole 9 in the figure 3.

Of course, a lower stopper may be provided at the lower end of the spring rail, and the spring rail lower stopper may extend radially to form a positioning portion (not shown) that abuts against the step surfaces of the large-diameter section 2 and the small-diameter section 3.

And the assembly of the stopping device is realized by enabling the sliding ring to coincide with the axis of the spring guide rail along the spiral direction of the spring guide rail, placing the sliding ring on the first circle of spiral body of the spring guide rail, then sleeving the sliding ring and the first circle of spiral body of the spring guide rail on the small-diameter part of the nut together, inserting the straight section of the spring guide rail into the small hole, and inserting the tail end of the top end of the spring guide rail into the inclined groove.

The above is only an embodiment of the present invention, which is not limited to the present invention, the present invention can have various changes, all of which are included in the spirit and principle of the present invention, any modification, equivalent replacement, etc. of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an electronic expansion valve arresting gear, includes nut and inside and outside nested and screw fit's spring guide and sliding ring, the top of spring guide is provided with locking portion, its characterized in that, the nut includes the minor diameter section of spring guide suit and the big footpath section that radially stretches out, the minor diameter section is in the top of spring guide corresponds the department and is provided with the pit, the top end assembly of spring guide in the pit.

2. The electronic expansion valve stop arrangement of claim 1, wherein the dimples are angled grooves with the top ends of the spring rails angled inward.

3. The electronic expansion valve stop device of claim 2, wherein the angled slot is at an angle of 15-60 ° to the nut centerline.

4. The electronic expansion valve stop device of claim 2 or 3, wherein the chute fully receives the top end of the spring guide rail.

5. The electronic expansion valve stopping device of claim 1, 2 or 3, wherein the lower end of the spring guide is provided with a lower stopping portion, the lower stopping portion of the spring guide comprises an inclined section inclined with respect to the axial direction, the end of the inclined section is provided with a straight section, and the large diameter section is provided with an inclined surface for positioning the inclined section.

6. The electronic expansion valve stop device according to claim 1, 2 or 3, further comprising a connecting piece provided with an axial small hole, wherein the lower end of the spring guide rail has a straight section, and the straight section is inserted into the small hole.

7. The electronic expansion valve stop device according to claim 1, 2 or 3, wherein the nut large diameter section is provided with an axial small hole, and the lower end of the spring guide rail has a straight section which is inserted into the small hole.

8. The electronic expansion valve stop device according to claim 1, 2 or 3, wherein the lower end of the spring rail is provided with a lower stop portion, and the spring rail lower stop portion extends radially to form a positioning portion abutting against the step surface.

9. The electronic expansion valve stop device of claim 3, wherein the angled slot is at an angle of 30 ° to the nut centerline.

10. The electronic expansion valve stop arrangement of claim 5, wherein the sloped section is two sections, the angle of slope increasing in steps.