Supporting pin, sliding block component and four-way valve

Abstract

The utility model provides a support pin, slider component and four-way valve, the support pin is provided with two oppositely arranged surfaces along the thickness direction and two oppositely arranged convex surfaces along the width direction, the convex surfaces are arc-shaped surfaces, the surfaces and the convex surfaces are alternately connected along the circumference of the support pin, the maximum distance between the two convex surfaces along the width direction of the support pin is B, in the thickness direction of the supporting pin, the maximum distance between the two surfaces is H, on the cross section of the supporting pin, the distance between the two ends of the convex face is d1, the distance between the middle point of the connecting line of the two ends of the convex face and the outer end point of the convex face in the width direction of the supporting pin is d2, and d1 is larger than or equal to 2d2. By means of the scheme, the problems that in the prior art, the cross section of a supporting pin is set to be oval, stress concentration is prone to occurring on the two side portions in the width direction of the supporting pin, and the service life of the supporting pin and a die for machining the supporting pin is affected can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of four-way valves, in particular to a support pin, a slider component and a four-way valve. Background Art

[0002] The slider assembly of a four-way valve includes a slider body and a support pin. The slider body has a concave cavity, and the support pin is arranged at the opening of the concave cavity. The length direction of the support pin is the same as the width direction of the slider body, and the two ends of the support pin are respectively connected to the two inner side walls of the slider body. However, the refrigerant needs to flow through the concave cavity. After the support pin is arranged in the concave cavity, the presence of the support pin will affect the smoothness of the refrigerant circulation in the concave cavity. In order to reduce the resistance of the support pin to the refrigerant, the cross-section of the support pin in the prior art is usually set to an elliptical structure. However, when the cross-section of the support pin is set to an elliptical structure, the two side portions of the support pin in the width direction are too sharp, and there is a possibility of stress concentration on the support pin, and the two side portions of the support pin in the width direction are easily damaged. In addition, the mold used to process the support pin also has the problem of cold working and machining stress concentration, which can easily cause damage to the mold. Utility Model Content

[0003] The utility model provides a support pin, a slider component and a four-way valve to solve the problem in the prior art that after the cross section of the support pin is set to an elliptical shape, the two side portions in the width direction of the support pin are too sharp, and stress concentration is prone to occur on the two side portions in the width direction of the support pin, thereby easily causing the support pin to be damaged and the mold for processing the support pin to be damaged.

[0004] According to one aspect of the present invention, a support pin is provided, wherein the support pin has two surfaces arranged opposite to each other in the thickness direction and two convex surfaces arranged opposite to each other in the width direction, the convex surfaces are arc-shaped surfaces, the surfaces and the convex surfaces are alternately connected along the circumference of the support pin, the maximum spacing between the two convex surfaces along the width direction of the support pin is B, and the maximum spacing between the two surfaces along the thickness direction of the support pin is H. On the cross section of the support pin, the distance between the two ends of the convex surface is d1, and the distance between the midpoint of the line connecting the two ends of the convex surface and the outer end point of the convex surface along the width direction of the support pin is d2, d1≥2d2.

[0005] Furthermore, d1 is greater than or equal to 0.7 mm.

[0006] Furthermore, the two convex surfaces are symmetrically arranged, and / or the two surfaces are symmetrically arranged.

[0007] Furthermore, at least one surface is a plane, and / or at least one surface is an outwardly convex curved surface.

[0008] Furthermore, the surfaces are all configured as planes, and the convex surface is semicircular in the cross section of the support pin.

[0009] Furthermore, the convex surface and the surface arc are transitionally connected.

[0010] Furthermore, the surface includes a plane and an outwardly protruding arc surface, and along the width direction of the support pin, the plane and the arc surface are connected in sequence.

[0011] Furthermore, the surface includes multiple sections of arc surfaces protruding outward, and the multiple arc surfaces are connected in sequence along the width direction of the support pin.

[0012] Further,

[0013] According to another aspect of the present invention, a slider component is provided, which includes: a slider body having a concave cavity; the above-mentioned support pin, which is located at the opening of the concave cavity, extends along the width direction of the slider body, and the two ends of the support pin in the length direction are respectively connected to the two inner side walls of the slider body.

[0014] Furthermore, a snap-fit groove is provided on the inner side wall of the slider body, the snap-fit groove is connected to the concave cavity, the shape of the snap-fit groove is adapted to the shape of the cross section of the support pin, and the end of the support pin is embedded in the snap-fit groove and snap-fitted with the snap-fit groove.

[0015] According to another aspect of the present invention, a four-way valve is provided, which includes the above-mentioned slider component.

[0016] The application of the technical solution of the present invention can enable the support pin to take into account the advantages of low flow resistance and low stress concentration. Specifically, after the support pin is assembled into the slider body, the length direction of the support pin is perpendicular to the length direction of the slider body, and the fluid flows along the length direction of the slider body. The fluid flowing through the support pin passes through one of the convex surfaces, two surfaces and the other convex surface in sequence. In this solution, the ratio between the maximum thickness dimension of the support pin and the spacing between the maximum width dimension of the support pin is set between 0.1 and 0.3. Such a setting can reduce the resistance of the fluid when passing through the support pin; and, along the width direction of the support pin, the two oppositely arranged side walls of the support pin are respectively arc-shaped convex surfaces, and on the cross section of the support pin, the spacing between the two ends of the convex surface is d1, and the spacing between the midpoint of the line connecting the two ends of the convex surface and the outer end point of the convex surface along the width direction of the support pin is d2, and d1 ≥ 2d2. Such a setting can avoid the problem of stress concentration on the support pin due to the convex surface being too sharp, thereby improving the service life of the support pin and reducing the problem of stress concentration on the mold used to process the support pin due to the convex surface of the support pin being too sharp, thereby improving the service life of the mold used to process the support pin; and, in the process of the fluid flowing through the support pin, it first passes through the convex surface. The setting of the convex surface helps the fluid to flow smoothly to the surface, reduces the formation of turbulence, and further reduces the flow resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 It shows a schematic structural diagram of the support pin provided by the first embodiment of the present invention from a first perspective;

[0019] Figure 2 It shows a structural schematic diagram of the support pin provided by the first embodiment of the present utility model from a second viewing angle;

[0020] Figure 3 It shows a schematic structural diagram of the support pin provided in the second embodiment of the present utility model;

[0021] Figure 4 It shows a schematic structural diagram of the support pin provided by the third embodiment of the present invention from a first perspective;

[0022] Figure 5 It shows a structural schematic diagram of the support pin provided by the third embodiment of the present invention from a second perspective;

[0023] Figure 6 A schematic structural diagram of a support pin provided in a fourth embodiment of the present invention is shown;

[0024] Figure 7 It shows a schematic structural diagram of the support pin provided by the fifth embodiment of the present invention from a first perspective;

[0025] Figure 8 It shows a schematic structural diagram of the support pin provided by the fifth embodiment of the present invention from a second viewing angle;

[0026] Figure 9 It shows a structural schematic diagram of the support pin provided by the sixth embodiment of the present utility model from a first perspective;

[0027] Figure 10 It shows a structural schematic diagram of the support pin provided by the sixth embodiment of the present utility model from a second viewing angle;

[0028] Figure 11 It shows a structural schematic diagram of the support pin provided by the seventh embodiment of the present utility model from a first perspective;

[0029] Figure 12 It shows a structural schematic diagram of the support pin provided by the seventh embodiment of the present utility model from a second viewing angle;

[0030] Figure 13 It shows a structural schematic diagram of the slider component provided by the eighth embodiment of the present utility model;

[0031] Figure 14 A cross-sectional view of a slider component provided by an eighth embodiment of the present invention from a first perspective is shown;

[0032] Figure 15 Show Figure 14 Schematic diagram of the local structure at A in the middle;

[0033] Figure 16 A cross-sectional view of the slider component provided by the eighth embodiment of the present invention from a second perspective is shown.

[0034] The above drawings include the following reference numerals:

[0035] 10. Surface;

[0036] 101. Horizontal plane; 102. First arc surface; 103. First inclined surface;

[0037] 104. Second arc surface; 105. Second inclined surface;

[0038] 106. Third arc surface; 107. Fourth arc surface;

[0039] 20. convex surface;

[0040] 30. Slider body; 301. Concave cavity; 302. Snap-fit groove. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a support pin, which has two surfaces 10 arranged opposite to each other along the thickness direction and two convex surfaces 20 arranged opposite to each other along the width direction. The convex surfaces 20 are arc-shaped surfaces. The surfaces 10 and the convex surfaces 20 are alternately connected along the circumference of the support pin. Along the width direction of the support pin, the maximum spacing between the two convex surfaces 20 is B. Along the thickness direction of the support pin, the maximum spacing between the two surfaces 10 is H. On the cross section of the support pin, the distance between the two ends of the convex surface 20 is d1, and the distance between the midpoint of the line connecting the two ends of the convex surface 20 and the outer end point of the convex surface 20 along the width direction of the support pin is d2, where d1 ≥ 2d2. It can be understood that the distance between the two ends of the convex surface 20 is the distance between the intersection of the convex surface 20 and the two surfaces 10.

[0043] like Figure 2 As shown, in this embodiment, one of the two ends of the convex surface 20 is the intersection point A1 between the convex surface 20 and one of the surfaces 10, and the other is the intersection point A2 between the convex surface 20 and the other surface 10. The midpoint of the line connecting the two ends of the convex surface 20 is O. The outer endpoints of the convex surface 20 along the width direction of the support pin refer to the endpoints where the distance between the two convex surfaces 20 is the largest along the width direction of the support pin. In this embodiment, the outer endpoints of the convex surface 20 along the width direction of the support pin are C.

[0044] The application of the technical solution of the present invention can enable the support pin to take into account the advantages of low flow resistance and low stress concentration. Specifically, after the support pin is assembled into the slider body, the length direction of the support pin is perpendicular to the length direction of the slider body, and the fluid flows along the length direction of the slider body. The fluid flowing through the support pin passes through one of the convex surfaces 20, the two surfaces 10 and the other convex surface 20 in sequence. In this solution, the ratio between the maximum thickness dimension of the support pin and the distance between the maximum width dimension of the support pin is set between 0.1 and 0.3. Such a setting can reduce the resistance of the fluid passing through the support pin while ensuring the structural strength of the support pin; and along the width direction of the support pin, the two opposite side walls of the support pin are respectively arc-shaped convex surfaces 20, and in the cross section of the support pin, the distance between the two ends of the convex surface 20 is d1, and the distance between the midpoint of the line connecting the two ends of the convex surface 20 and the outer end point of the convex surface 20 along the width direction of the support pin is d2, and d1 ≥ 2d2. Such a setting can avoid the convex surface 20 being too sharp, reduce the problem of stress concentration on the support pin, improve the service life of the support pin, and facilitate the processing and forming of the support pin; and reduce the problem of stress concentration on the mold used to process the support pin due to the convex surface of the support pin being too sharp, thereby improving the service life of the mold used to process the support pin; and, in the process of the fluid flowing through the support pin, it first passes through the convex surface 20. The setting of the convex surface 20 helps the fluid to flow smoothly to the surface 10, reduces the formation of turbulence, and further reduces the flow resistance.

[0045] Preferably, in, It can be set to 0.1, 0.15, 0.18, 0.2, 0.25, 0.3, etc.

[0046] Furthermore, d1 is greater than or equal to 0.7 mm. This configuration can further reduce the possibility of stress concentration occurring in the support pin and the possibility of stress concentration occurring in the mold for processing the support pin.

[0047] In this embodiment, the two convex surfaces 20 are symmetrically arranged. That is, in this embodiment, the two convex surfaces 20 have the same structure. This arrangement ensures uniform pressure distribution on both sides of the support pin when the fluid passes through it, reducing resistance caused by the pressure difference. Furthermore, this arrangement facilitates the processing and forming of the support pin.

[0048] This solution does not limit the specific form of surface 10. Surface 10 may be a flat surface; an outwardly protruding arc surface; a surface 10 formed by alternating flat surfaces and outwardly protruding arc surfaces along the width of the support pin; or a surface 10 formed by sequentially connecting multiple outwardly protruding arc surfaces along the width of the support pin.

[0049] When the surface is arranged in a manner that the plane and the outwardly protruding arc surface are alternately connected along the width direction of the support pin, the adjacent plane and the outwardly protruding arc surface are transitionally connected to the arc. This arrangement can reduce flow forces and reduce the risk of stress concentration on the support pin.

[0050] Similarly, the surface is arranged along the width direction of the support pin, and when a plurality of outwardly protruding arc surfaces are connected in sequence, two adjacent arc surfaces are connected by arc transition.

[0051] In some embodiments of the present solution, the two surfaces 10 are arranged in an asymmetrical form.

[0052] In the embodiment of this solution, the two surfaces 10 are symmetrically arranged.

[0053] Furthermore, the convex surface 20 and the surface 10 are connected by an arc transition. The arc transition connection provides a smooth transition from the convex surface 20 to the surface 10, reducing sudden changes in the fluid flow and helping to reduce the local velocity gradient and turbulence intensity of the fluid. In addition, the arc transition allows the fluid to adhere more smoothly to the convex surface 20 and the surface 10, helping to reduce the separation of the fluid on the support pin surface and further reducing flow resistance. In addition, the above-mentioned setting reduces stress concentration points, allowing for a more uniform stress distribution on the support pin, which helps to increase the life of the support pin.

[0054] like Figure 1 and Figure 2 Specifically, in the first embodiment of this solution, the cross-section of the support pin is a central figure. The two convex surfaces 20 are symmetrically arranged, and the two surfaces 10 are symmetrically arranged. The two surfaces 10 are respectively plane and parallel to each other. Along the cross-section of the support pin, H = d1 = 2d2, and the convex surface 20 is tangent to the surface 10. The profile of the convex surface 20 is a semicircular structure. That is, along the cross-section of the support pin, the cross-section of the support pin is waist-shaped.

[0055] like Figure 3 As shown, in the second embodiment of this solution, the two convex surfaces 20 are symmetrically arranged, and the two surfaces 10 are symmetrically arranged. The two surfaces 10 are respectively plane and parallel to each other. Along the cross-sectional direction of the support pin, d1>2d2, d1=H, the convex surface 20 is tangent to the surface 10, and the outline of the convex surface 20 is a semi-elliptical structure.

[0056] like Figure 4 and Figure 5 As shown in the third embodiment of this scheme, the cross section of the support pin is a central figure. The two convex surfaces 20 are symmetrically arranged, the two surfaces 10 are symmetrically arranged, and the two surfaces 10 are respectively arc-shaped surfaces convex outwards. The convex surface 20 and the surface 10 are connected by an arc transition, d1>2d2, and d1 <H。

[0057] like Figure 6 As shown in the fourth embodiment of this scheme, the cross section of the support pin is a central figure. The two convex surfaces 20 are symmetrically arranged, the two surfaces 10 are symmetrically arranged, and the two surfaces 10 are respectively arc-shaped surfaces convex outwards. The convex surface 20 and the surface 10 are connected by an arc transition, d1=2d2, and d1 <H。

[0058] like Figure 7 and Figure 8 As shown, in the fifth embodiment of this solution, the cross-section of the support pin is a centrally symmetrical figure, with two convex surfaces 20 symmetrically arranged and two surfaces 10 symmetrically arranged. Taking one of the surfaces as an example, surface 10 includes a horizontal surface 101, a first arc surface 102, and a first inclined surface 103. There are two first inclined surfaces 103 and two first arc surfaces 102, respectively. The horizontal surface 101 is located in the middle of the surface 10, and two first arc surfaces 102 are connected to each of the two ends of the horizontal surface 101. The end of the first arc surface 102 away from the horizontal surface 101 is connected to the first inclined surface 103, and the end of the first inclined surface 103 away from the first arc surface 102 is connected to the convex surface 20. In addition, along the thickness direction of the support pin, the distance between the two symmetrically arranged first inclined surfaces 103 gradually decreases from the middle of the support pin to the end. It can be understood that the two horizontal surfaces 101 are arranged parallel to each other.

[0059] like Figure 9 and Figure 10 As shown, in the sixth embodiment of this solution, the cross-section of the support pin is a centrally symmetrical figure, with two convex surfaces 20 and two surfaces 10 arranged symmetrically. Taking one of the surfaces as an example, surface 10 includes a second arc surface 104 and a second inclined surface 105. Two second inclined surfaces 105 are provided, and the two second inclined surfaces 105 are symmetrically arranged on either side of the second arc surface 104. One end of the second inclined surface 105 is connected to the second arc surface 104, and the other end is connected to the convex surface 20. Furthermore, along the thickness direction of the support pin, the spacing between the two symmetrically arranged second inclined surfaces 105 gradually decreases from the middle of the support pin to the end.

[0060] like Figure 11 and Figure 12 As shown, in the seventh embodiment of this solution, the cross section of the support pin is a centrally symmetrical figure, with the two convex surfaces 20 and the two surfaces 10 being symmetrically arranged. Taking one of the surfaces as an example, surface 10 includes a third arc surface 106 and a fourth arc surface 107. There are two fourth arc surfaces 107, which are symmetrically arranged on both sides of the third arc surface 106. The two ends of the fourth arc surface 107 are respectively connected to the third arc surface 106 and the convex surface 20.

[0061] like Figures 13 to 16 As shown, the eighth embodiment of the present invention provides a slider assembly, which includes a slider body 30 and the support pin of the above embodiment. The slider body 30 has a cavity 301; the support pin is located at the opening of the cavity 301, extending along the width of the slider body 30, and the two ends of the support pin in the longitudinal direction are respectively connected to the two inner side walls of the slider body 30.

[0062] Furthermore, a snap-fit groove 302 is provided on the inner sidewall of the slider body 30. The snap-fit groove 302 communicates with the recessed cavity 301. The shape of the snap-fit groove 302 matches the cross-sectional shape of the support pin, and the end of the support pin is embedded in and snap-fits with the snap-fit groove 302. Specifically, one end of the snap-fit groove 302 extends to the end surface of the open end of the slider body 30, and the contour of the snap-fit groove 302 matches the cross-sectional shape of the support pin. This can reduce the possibility of stress concentration in the slider body 30 corresponding to the snap-fit groove 302, thereby improving the life of the slider body 30. The provision of the snap-fit groove 302 can also improve the stability and convenience of the connection between the support pin and the slider body 30.

[0063] It can be understood that the slider component of this solution can apply any one of the support pins in the above embodiments. Correspondingly, the contour shape of the engaging groove 302 of the slider component can be adapted to the cross-sectional shape of the corresponding support pin.

[0064] An embodiment of the present utility model further provides a four-way valve, which includes the above-mentioned slider component.

[0065] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0066] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0067] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0068] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0069] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A support pin, characterized in that: The support pin has two surfaces (10) arranged opposite to each other in the thickness direction and two convex surfaces (20) arranged opposite to each other in the width direction, the convex surfaces (20) are arc-shaped surfaces, the surfaces (10) and the convex surfaces (20) are alternately connected along the circumference of the support pin, the maximum spacing between the two convex surfaces (20) along the width direction of the support pin is B, and the maximum spacing between the two surfaces (10) along the thickness direction of the support pin is H. On the cross section of the support pin, the distance between the two ends of the convex surface (20) is d1, and the distance between the midpoint of the line connecting the two ends of the convex surface (20) and the outer end point of the convex surface (20) along the width direction of the support pin is d2, and d1≥2d2.

2. The support pin according to claim 1, wherein: d1 is greater than or equal to 0.7 mm.

3. The support pin according to claim 1, wherein: The two convex surfaces (20) are symmetrically arranged, and / or the two surfaces (10) are symmetrically arranged.

4. The support pin according to claim 1, wherein: At least one of the surfaces (10) is a plane, and / or at least one of the surfaces (10) is an outwardly convex arc surface.

5. The support pin according to claim 1, wherein: The surfaces (10) are all arranged to be planes, and the convex surface (20) is semicircular in the cross section of the support pin.

6. The support pin according to claim 1, wherein: The convex surface (20) and the surface (10) are connected in a circular arc transition.

7. The support pin according to claim 1, wherein: The surface (10) comprises a plane and an outwardly protruding arc surface, and along the width direction of the support pin, the plane and the arc surface are connected in sequence.

8. The support pin according to claim 1, wherein: The surface (10) comprises a plurality of segments of outwardly protruding arc surfaces, and the plurality of segments of the arc surfaces are sequentially connected along the width direction of the support pin.

9. The support pin according to claim 1, characterized in that:

10. A slider component, characterized in that: include: The slider body (30) has a concave cavity (301); The support pin according to any one of claims 1 to 9 is located at the opening of the cavity (301), the support pin extends along the width direction of the slider body (30), and the two end portions of the support pin in the length direction are respectively connected to the two inner side walls of the slider body (30).

11. The slider component according to claim 10, wherein: A snap-fit groove (302) is provided on the inner side wall of the slider body (30), the snap-fit groove (302) is communicated with the concave cavity (301), the shape of the snap-fit groove (302) is adapted to the shape of the cross section of the support pin, and the end of the support pin is embedded in the snap-fit groove (302) and snap-fitted with the snap-fit groove (302).

12. A four-way valve, characterized in that: A slider component comprising claim 10 or 11.

Images