WO2023165305A1

WO2023165305A1 - Nut structure and electric valve

Info

Publication number: WO2023165305A1
Application number: PCT/CN2023/075059
Authority: WO
Inventors: 詹少军; 黄鸿峰; 贺宇辰
Original assignee: 浙江盾安人工环境股份有限公司
Priority date: 2022-03-04
Filing date: 2023-02-08
Publication date: 2023-09-07
Also published as: CN217177308U; KR20240039177A

Abstract

A nut structure, which comprises a nut main body (10); two opposing demolding planes (11) are arranged on an outer peripheral surface of the nut main body (10), the demolding planes (11) are parallel to an axis of the nut main body (10); the nut main body (10) is further provided with a helical guide groove (12); the helical guide groove (12) is arranged on an outer peripheral surface of the nut main body (10) between the two demolding planes (11); the maximum distance between the two demolding planes (11) is L, and the minimum diameter of the helical guide groove (12) is d, where L ≤ ( d - 0.3 ) mm. The nut structure prevents a portion of a parting line produced after mold closing and forming of the nut main body from falling on the helical guide groove, a situation where there is interference between a parting line on a demolding plane and a stop ring when moving in the helical guide groove is averted, and the reliability of the nut main body is improved. Further disclosed is an electromagnetic valve comprising the nut structure.

Description

Nut structure and electric valve

This application claims the priority of the patent application submitted to the State Intellectual Property Office of China on March 4, 2022 with the application number 202220476508.9 and the invention titled "nut structure and electric valve".

technical field

The present application relates to the technical field of electric valves, in particular, to a nut structure and electric valves.

Background technique

At present, the nut body in the nut structure will produce a mold line at the mold clamping position after mold clamping, and the mold line part is located on the spiral guide groove, which affects the movement of the stop ring in the spiral guide groove.

Part of the nut structure in the prior art will use a new mold to mold the nut body during production, so that the mold clamping line avoids the setting of the spiral guide groove. On the stripping plane, but the stop ring still interferes with the helical guide groove or the parting line on the stripping plane during the movement of the stop ring, which reduces the reliability of the nut structure.

application content

The application provides a nut structure and an electric valve to improve the reliability of the nut structure.

In order to achieve the above object, according to one aspect of the present application, the present application provides a nut structure, including: a nut body, two opposite demoulding planes are arranged on the outer peripheral surface of the nut body, and the demoulding planes are parallel to the nut body. axis, the nut body also has a helical guide groove, the helical guide groove is set on the outer peripheral surface of the nut body between the two demoulding planes, the maximum distance between the two demoulding planes is L, and the minimum diameter of the helical guide groove is For d, L≤(d-0.3)mm.

Further, L≥(d-1)mm.

Further, the two demoulding planes are arranged in parallel.

Further, in the axial direction of the nut body, the length of the stripping plane is greater than or equal to the length of the spiral guide groove.

Further, the nut body includes a nut section, a transition section and a connection section connected in sequence, the maximum radial dimension of the connection section is larger than the maximum radial dimension of the nut section, and both the demoulding plane and the spiral guide groove are located on the nut section.

Further, the distance between the demoulding plane and the inner wall of the nut segment is greater than or equal to 1 mm.

Further, the demoulding plane is a first cut surface, the transition section has a second cut surface, the connecting section has a third cut surface, and the first cut surface, the second cut surface and the third cut surface are sequentially connected.

Further, the nut body also includes a limiting plate, the limiting plate is connected to the end of the connecting section away from the transition section, the maximum radial dimension of the limiting plate is larger than the maximum radial dimension of the connecting section, and the limiting plate has a fourth cut surface, The fourth cut plane is connected to the third cut plane.

Further, the nut structure further includes a matching plate, which is detachably sleeved on the nut main body.

According to another aspect of the present application, an electric valve is provided. The electric valve includes a valve body assembly and the above-mentioned nut structure, and the nut structure is located in the valve body assembly.

Applying the technical solution of the present application, a nut structure is provided, including: a nut body, two demoulding planes arranged oppositely on the outer peripheral surface of the nut body, the demoulding planes are parallel to the axis of the nut body, and the nut body also has a helical Guide groove, the spiral guide groove is arranged on the outer peripheral surface of the nut body between the two demoulding planes, the maximum distance between the two demoulding planes is L, and the minimum diameter of the spiral guide groove is d, L≤(d -0.3) mm. With this solution, two demoulding planes parallel to the axis of the nut body are set, so that the part of the mold line formed after the nut body is molded is located on the demoulding plane, or the part of the mold formed after the nut body is molded The outer peripheral surface where the line is located is cut off to form a demoulding plane, which avoids the situation in the prior art that part of the clamping line generated by the nut body after clamping and forming falls on the spiral guide groove, affecting the movement of the stop ring in the spiral guide groove. Improve the reliability of the nut body. Further, the limit L≤(d-0.3)mm avoids the situation that when part of the parting line is located on the demoulding plane, the distance between the parting lines on both sides is equal to the minimum diameter d of the spiral guide groove, specifically, 0.3mm can be understood as the sum of the height of the mold clamping line on both sides protruding from the mold clamping plane, to prevent the stop ring from clamping on the demoulding plane during the movement of the stop ring in the spiral guide groove when L>(d-0.3)mm The situation of line interference ensures the reliability of the stop ring moving in the spiral guide groove and improves the reliability of the nut body.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide further understanding of the present application, and the schematic embodiments and descriptions of the present application are used to explain the present application, and do not constitute an improper limitation of the present application. In the attached picture:

FIG. 1 shows a schematic structural diagram of a nut structure provided by Embodiment 1 of the present application;

Fig. 2 shows the front view of the nut structure of Fig. 1;

Fig. 3 shows the front view of another angle of view of the nut structure of Fig. 1;

FIG. 4 shows a schematic structural view of the nut structure provided by Embodiment 2 of the present application;

Fig. 5 shows the front view of the nut structure of Fig. 4;

Fig. 6 shows a schematic structural diagram of the electric valve provided by Embodiment 3 of the present application.

Wherein, the above-mentioned accompanying drawings include the following reference signs:

10. Nut main body; 11. Demolding plane; 12. Spiral guide groove; 13. Nut section; 14. Transition section; 141. Second cut surface; 15. Connecting section; 151. Third cut surface; 16. Limit plate; 161, the fourth cutting surface;

20. Matching plate;

30. Valve body assembly.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as any limitation of the application, its application or uses. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

As shown in Figures 1 to 3, Embodiment 1 of the present application provides a nut structure, including: a nut body 10, two oppositely arranged demoulding planes 11 are arranged on the outer peripheral surface of the nut body 10, and the demoulding planes 11 Parallel to the axis of the nut body 10, the nut body 10 also has a helical guide groove 12, the helical guide groove 12 is arranged on the outer peripheral surface of the nut main body 10 between the two demoulding planes 11, between the two demoulding planes 11 The maximum distance is L, the minimum diameter of the spiral guide groove 12 is d, and L≤(d-0.3) mm.

In this embodiment, two demoulding planes 11 parallel to the axis of the nut body 10 are provided, so that part of the parting line formed after the nut body 10 is molded is located on the demoulding plane 11, or, so that the nut body 10 is molded The outer peripheral surface where the part of the mold line formed after molding is cut off to form a demoulding plane 11, which avoids the part of the mold line generated by the nut body after mold clamping in the prior art falling on the spiral guide groove and affecting the stop ring. In the case of moving in the spiral guide groove, the reliability of the nut main body 10 is improved. Further, the limit L≤(d-0.3)mm avoids the situation that when part of the parting line is located on the demoulding plane, the distance between the parting lines on both sides is equal to the minimum diameter d of the spiral guide groove 12, specifically , 0.3mm can be understood as the sum of the height of the parting line protruding from the demoulding plane 11 on both sides to prevent the stop ring from colliding with the demoulding plane during the movement of the spiral guide groove 12 when L>(d-0.3)mm The interference of the parting line on 11 ensures the reliability of the stop ring moving in the spiral guide groove 12 and improves the reliability of the nut body 10.

Specifically, after the nut body 10 in the prior art is molded, the outer peripheral surface of the nut body 10 has a mold line extending along the axis of the nut body 10 , and part of the mold line is located on the spiral guide groove 12 . The clamping molding of the nut main body 10 in this embodiment is the situation that the clamping line on the outer peripheral surface of the nut main body 10 is located on the demoulding plane 11 by using mold clamping.

As shown in Figure 2 and Figure 3, L≥(d-1)mm. In this way, the minimum diameter d of the spiral guide groove 12 and the maximum distance L between the two demoulding planes 11 are further limited. This formula can be understood as (d-L)≤1mm, so as to avoid the distance between L being too small to cause the nut A case where the structural strength of the main body 10 is reduced. Specifically, the nut body 10 has a through hole that runs through the nut body 10 along the axial direction of the nut body 10. If (d-L)>1mm, the distance between the demoulding plane 11 and the side wall of the through hole will be too small to cause the nut body to 10 In the case of reduced structural strength, the further restrictions on d and L in this embodiment ensure the reliability of the structure of the nut body 10 .

As shown in FIG. 2, two demoulding planes 11 are arranged in parallel. Such setting facilitates the processing of the nut body 10 and improves the production efficiency of the nut body 10 .

Specifically, in the axial direction of the nut body 10 , the length of the demoulding plane 11 is greater than or equal to the length of the helical guide groove 12 . This arrangement avoids the situation in the prior art that part of the mold line is located in the spiral guide groove 12 after the nut body 10 is demoulded and affects the movement of the stop ring, ensuring the reliability of the nut body 10 .

Specifically, the nut body 10 includes a nut section 13, a transition section 14 and a connection section 15 connected in sequence, the maximum radial dimension of the connection section 15 is greater than the maximum radial dimension of the nut section 13, and the demoulding plane 11 and the spiral guide groove 12 are both Located on the nut segment 13. Such arrangement facilitates the processing of the demoulding plane 11 and the spiral guide groove 12 and improves the production efficiency of the nut body 10 .

Further, the distance between the demoulding plane 11 and the inner wall of the nut segment 13 is greater than or equal to 1mm. This setting avoids the situation that the structural strength of the nut segment 13 is reduced when the distance between the demoulding plane 11 and the inner wall of the nut segment 13 is less than 1 mm, and ensures the reliability of the nut segment 13 .

Specifically, the nut body 10 also includes a limiting plate 16, the limiting plate 16 is connected to the end of the connecting section 15 away from the transition section 14, the maximum radial dimension of the limiting plate 16 is greater than the maximum radial dimension of the connecting section 15, and the nut structure A matching plate 20 is also included, and the matching plate 20 is detachably sleeved on the nut body 10 .

In this embodiment, the mating plate 20 and the nut body 10 are detachably connected. By setting the matching plate 20 and the nut body 10 separately, it avoids the situation that the nut structure needs to be put into the matching plate when insert molding the nut structure in the related art, improves the production efficiency of the nut structure, and at the same time avoids the need to insert the matching plate 20. The fact that the nut body 10 cannot be recycled for secondary use makes the nut body 10 better for secondary recycling. Moreover, this arrangement avoids the situation in the related art that there are many burrs at the connection position of the mating plate and the nut when the nut structure is insert-molded due to technological reasons, resulting in damage to the nut structure, and improves the structural strength of the nut structure.

As shown in Figures 4 and 5, Embodiment 2 of the present application provides a nut structure. The difference from Embodiment 1 is that the demoulding plane 11 is the first cut surface, and the transition section 14 has a second cut surface 141. , the connecting section 15 has a third cut surface 151, the first cut surface, the second cut surface 141 and the third cut surface 151 are sequentially connected, the limiting plate 16 has a fourth cut surface 161, the fourth cut surface 161 and the third cut surface Face 151 is connected.

In this embodiment, the nut main body 10 is molded firstly, and then cut along the plane where the mold line is located, so as to remove the mold line. The interference between the mold line formed after the nut body 10 is molded and the stop ring moving in the spiral guide groove 12 in the prior art is avoided, thereby ensuring the reliability of the nut body 10 . Furthermore, the first cut surface, the second cut surface 141 , the third cut surface 151 and the fourth cut surface 161 are sequentially connected to facilitate the cutting process of the nut body 10 and improve the production efficiency of the nut body 10 .

Optionally, the parting line that affects the movement of the retaining ring is part of the parting line on the nut segment 13, so this embodiment can also be cut only for the nut segment 13, that is, it only has the first cut surface, and does not cut the transition part. 14. The connecting section 15 and the limiting plate 16 are cut off.

As shown in FIG. 6 , Embodiment 3 of the present application provides an electric valve. The electric valve includes a valve body assembly 30 and the above-mentioned nut structure, and the nut structure is located in the valve body assembly 30 .

In this embodiment, two demoulding planes 11 parallel to the axis of the nut main body 10 are provided on the nut body 10 of the nut structure, so that part of the mold line formed after the nut main body 10 is molded is located on the demoulding plane 11 , or, such that the screw The outer peripheral surface where the part of the mold line formed after the female body 10 is molded is cut off to form a demoulding plane 11, which avoids the part of the molded line generated by the nut body in the prior art after the mold is molded from falling on the spiral guide groove. The movement of the stop ring in the spiral guide groove is affected, and the reliability of the nut main body 10 is improved. Further, the limit L≤(d-0.3)mm, specifically, 0.3mm can be understood as the sum of the heights of the parting lines on both sides protruding from the demoulding plane 11, to prevent the stop when L>(d-0.3)mm During the movement of the stop ring in the spiral guide groove 12, it interferes with the parting line on the demoulding plane 11, which ensures the reliability of the stop ring moving in the spiral guide groove 12, and improves the reliability of the nut body 10 and the electric valve. sex.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, various modifications and changes may be made to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

A nut structure, characterized in that it comprises:

A nut body (10), the outer peripheral surface of the nut body (10) has two opposite demoulding planes (11), the demoulding planes (11) are parallel to the axis of the nut body (10), The nut body (10) also has a spiral guide groove (12), and the spiral guide groove (12) is arranged on the outer peripheral surface of the nut body (10) between the two demoulding planes (11). Above, the maximum distance between the two demoulding planes (11) is L, the minimum diameter of the spiral guide groove (12) is d, and L≤(d-0.3) mm.
The nut structure according to claim 1, characterized in that L≥(d-1)mm.
The nut structure according to claim 1, characterized in that two said stripping planes (11) are arranged in parallel.
The nut structure according to claim 1, characterized in that, in the axial direction of the nut body (10), the length of the stripping plane (11) is greater than or equal to the length of the spiral guide groove (12).
The nut structure according to claim 1, characterized in that, the nut body (10) comprises a nut section (13), a transition section (14) and a connecting section (15) connected in sequence, and the connecting section (15) The maximum radial dimension is greater than the maximum radial dimension of the nut segment (13), and both the demoulding plane (11) and the spiral guide groove (12) are located on the nut segment (13).
The nut structure according to claim 5, characterized in that the distance between the demoulding plane (11) and the inner wall of the nut segment (13) is greater than or equal to 1 mm.
The nut structure according to claim 5, characterized in that, the demoulding plane (11) is a first cut surface, the transition section (14) has a second cut surface (141), and the connecting section (15 ) has a third cut surface (151), the first cut surface, the second cut surface (141) and the third cut surface (151) are sequentially connected.
The nut structure according to claim 7, characterized in that, the nut body (10) further comprises a limiting plate (16), and the limiting plate (16) and the connecting section (15) are far away from the transition One end of the section (14) is connected, the maximum radial dimension of the limiting plate (16) is larger than the maximum radial dimension of the connecting section (15), and the limiting plate (16) has a fourth cut surface (161 ), the fourth cut surface (161) is connected to the third cut surface (151).
The nut structure according to claim 1, characterized in that the nut structure further comprises a fitting plate (20), and the fitting plate (20) is detachably sleeved on the nut body (10).
An electric valve, characterized in that the electric valve comprises a valve body assembly (30) and the nut structure according to any one of claims 1 to 9, the nut structure is located in the valve body assembly (30) .