CN218582430U - Bracket component and diverter valve - Google Patents

Abstract

The application relates to the technical field of switching valves, in particular to a support assembly and a switching valve. The bracket assembly comprises a first bracket and a second bracket. The first support is provided with an inserting groove, and the second support comprises a matching part. The first support comprises a buckling piece, at least part of the buckling piece is positioned in the insertion groove and extends into the insertion groove along with the matching part, and the matching part can be clamped with the buckling piece to connect the first support with the second support; or the matching part comprises a buckling piece which extends into the insertion groove along with the matching part, and the buckling piece can be clamped with the first support to connect the first support with the second support. The application has the advantages that: the first support and the second support are connected in a clamping mode, so that the whole connection of the support component is stable and reliable, the structure is simple, the subsequent disassembly is convenient, and the production and maintenance cost is reduced.

Description

Bracket component and diverter valve

Technical Field

The application relates to the technical field of switching valves, in particular to a support assembly and a switching valve.

Background

Switching valves are used primarily in refrigeration equipment to control the direction of fluid flow in the equipment lines.

The conventional switching valve includes a main valve and a pilot valve, which are connected to each other by a bracket assembly. The existing support component comprises a main valve support and a pilot valve support, the main valve support and the pilot valve support are mostly fixed through welding, the installation process is complex, the main valve support and the pilot valve support cannot be disassembled and reworked after welding, products can only be scrapped once problems occur, and the cost is improved.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a bracket assembly and a switching valve that are easy to assemble and disassemble.

A support assembly comprises a first support and a second support, wherein the first support is provided with an insertion groove, the second support comprises a matching part, the first support comprises a buckling piece, at least part of the buckling piece is positioned in the insertion groove, the buckling piece extends into the insertion groove along with the matching part, and the matching part can be clamped with the buckling piece to connect the first support with the second support; or the matching part comprises a buckling piece, the buckling piece extends into the insertion groove along with the matching part, and the buckling piece can be clamped with the first support to connect the first support with the second support.

It can be understood that the first support and the second support are connected in a clamping manner, so that the connection between the first support and the second support is stable and reliable, and in the assembling process, only the matching part needs to be inserted into the insertion groove, the matching part can be automatically clamped and positioned with the fastener, or the first support can be automatically clamped and positioned with the fastener, so that the operation difficulty and the production cost are reduced.

In one embodiment, the first bracket further comprises a fixing part, a connecting part and a guiding part, wherein one end of the connecting part is connected with the fixing part; the guide part is connected with the connecting part, and the guide part and the connecting part enclose the inserting groove.

So set up, can improve the stability of being connected of first support and second support.

In one embodiment, the guide part comprises two guide pieces, and the two guide pieces are symmetrically arranged on two sides of the connecting part and enclose the connecting part to form the insertion groove.

So set up, the removal that cooperation portion can be restricted to the guide part to realize prepositioning between first support and second support.

In one embodiment, the fastening piece comprises a positioning protrusion, the matching part is provided with a limiting hole, the positioning protrusion can be inserted into the limiting hole along with the second support extending into the insertion groove; or, the connecting part is provided with a limiting hole, the connecting part extends into the inserting groove along with the second support, and the positioning bulge can be clamped into the limiting hole.

So set up, can realize dismantling between first support and second support and be connected, the installation of being convenient for is dismantled, improves machining efficiency.

In one embodiment, the fastener further comprises an elastic sheet, one end of the elastic sheet is connected with the connecting part, and the positioning bulge is arranged on one side of the elastic sheet, which is far away from the connecting part; or one end of the elastic sheet is connected with the matching part, and the positioning bulge is arranged on one side of the elastic sheet far away from the matching part; the elastic piece can drive the positioning bulge to penetrate through the limiting hole along with the matching part extending into the insertion groove.

So set up, can avoid cooperation portion to produce and rock, realize the stability of connecting.

In one embodiment, the vertical distance between the elastic sheet and the connecting part is increased in the direction from one end of the connecting part far away from the fixing part to one end of the connecting part connected with the fixing part; or, the second support still includes the main part, the main part with the cooperation portion is connected the cooperation portion keep away from the one end of main part to the cooperation portion with in the direction of the one end that the main part is connected, the flexure strip with the perpendicular distance of cooperation portion is the increase trend.

So set up, further guarantee the stability of being connected between first support and second support.

In one embodiment, the connecting part is provided with a containing groove, the containing groove is arranged corresponding to the elastic sheet, and under the action of external force, at least part of the elastic sheet can extend into the containing groove; or, the cooperation portion has seted up the holding tank, the holding tank with the flexure strip corresponds the setting, and under the exogenic action, the flexure strip part at least can stretch into in the holding tank.

So set up, the installation and the dismantlement of second support of further being convenient for.

In one embodiment, the height of the elastic sheet is H1, the height of the matching part is H2, and H1 is more than H2; or the height of the elastic piece is smaller than that of the matching part.

By the arrangement, the disassembly and rework or installation are facilitated.

In one embodiment, the end of the fitting portion near the first bracket is formed with a chamfer.

So set up, can play the guide effect to be convenient for the cooperation portion to insert in the inserting groove.

The application also provides a switching valve, which comprises a main valve, a pilot valve and the bracket assembly, wherein the first bracket is connected with the pilot valve or the main valve, and the second bracket is correspondingly connected with the main valve or the pilot valve.

Compared with the prior art, the bracket component that this application provided connects first support and second support through the mode of joint for it is comparatively stable, reliable to connect, simple structure moreover, and subsequent dismantlement of being convenient for has reduced the production maintenance cost.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a bracket assembly provided in the present application.

Fig. 2 is a schematic structural diagram of a first bracket provided in the present application.

Fig. 3 is a schematic structural diagram of a second bracket provided in the present application.

Fig. 4 is a side view of a first bracket provided herein.

Fig. 5 is a cross-sectional view of a first stent provided herein.

Fig. 6 is a side view of a second bracket provided herein.

The symbols in the drawings represent the following meanings:

100. a bracket assembly; 10. a first bracket; 11. inserting grooves; 12. a fastener; 121. positioning the projection; 122. an elastic sheet; 13. a fixed part; 131. welding the hole; 14. a connecting portion; 141. accommodating grooves; 15. a guide portion; 151. a guide member; 20. a second bracket; 21. a fitting portion; 211. a limiting hole; 212. chamfering; 22. a main body portion.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "secured to" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used in the description of the present application are for illustrative purposes only and do not represent the only embodiments.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or may simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the description of the present application, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, the present application provides a bracket assembly 100 mounted on a switching valve (not shown) to connect a main valve and a pilot valve of the switching valve.

Referring to fig. 1-3, a bracket assembly 100 provided herein includes a first bracket 10 and a second bracket 20. The first support 10 is provided with an insertion groove 11, the second support 20 comprises a matching part 21, and the matching part 21 can extend into the insertion groove 11 and connect the first support 10 with the second support 20.

Further, the first bracket 10 is connected to a pilot valve or a main valve, and the second bracket 20 is correspondingly connected to the main valve or the pilot valve. Specifically, when the first bracket 10 is connected with the pilot valve, the second bracket 20 is connected with the main valve; when the first bracket 10 is connected to the main valve, the second bracket 20 is connected to the pilot valve. In this way, the main valve and the pilot valve are connected together by the first bracket 10 and the second bracket 20, and the stability of the overall structure of the switching valve is improved. For convenience of explanation, the present application will be described with the first bracket 10 connected to the pilot valve and the second bracket 20 connected to the main valve.

Referring to fig. 2, in an embodiment, the first bracket 10 further includes a fixing portion 13, a connecting portion 14 and a guiding portion 15, wherein one end of the connecting portion 14 is connected to the fixing portion 13; the guide part 15 is connected with the connecting part 14, and the guide part 15 and the connecting part 14 enclose the inserting groove 11.

Specifically, the fixing portion 13 is connected to the pilot valve, and the connecting portions 14 are two and symmetrically disposed on both sides of the fixing portion 13. In this way, the stress of the assembled first bracket 10 is uniform, thereby improving the connection stability of the first bracket 10 and the second bracket 20.

Further, the guide portion 15 includes two guide elements 151, and the two guide elements 151 are symmetrically disposed on two sides of the connecting portion 14 and enclose the connecting portion 14 to form the insertion groove 11.

Specifically, the guide portion 15 is composed of two substantially L-shaped guide pieces 151. So, simple structure, processing is convenient, and when cooperation portion 21 stretched into inserting groove 11 in, guide part 15 can restrict the removal of cooperation portion 21 to realize the prepositioning between first support 10 and second support 20.

For the convenience of welding fixation, the part of the fixing part 13 connected with the pilot valve is provided with a welding hole 131, and the shape of the fixing part 13 can be fit with the outer wall of the pilot valve, thereby further improving the connection stability.

Furthermore, the fastening member 12, the fixing portion 13, the connecting portion 14 and the guide portion 15 are integrally formed, so that the strength is high, the number of assembling processes can be reduced, and the processing efficiency can be improved. In other embodiments, the fastening elements 12, the fixing portions 13, the connecting portions 14 and the guiding portions 15 may be provided in a split manner.

Referring to fig. 3, the second bracket 20 further includes a main body portion 22, and the main body portion 22 is connected to the matching portion 21. Specifically, the main body portion 22 is shaped to fit the outer wall of the main valve and is connected to the main valve, and the fitting portion 21 is connected to the side of the main body portion 22 away from the main valve. Corresponding to the connecting portion 14, in the present embodiment, there are two engaging portions 21, and the engaging portions are symmetrically distributed on two sides of the main body portion 22. Therefore, when the assembling process is carried out, the inserting limit can be easily realized only by aligning the matching part 21 with the corresponding inserting groove 11, the operation of the whole assembling process is simple, and the assembling efficiency can be improved.

Further, a chamfer 212 is formed at one end of the fitting portion 21 near the first bracket 10. Specifically, the chamfer 212 is disposed at an end of the fitting portion 21 away from the main body portion 22, and the chamfer 212 may be disposed as an oblique angle or a rounded angle. The chamfer 212 can serve as a guide to prevent interference between the fitting portion 21 and the guide portion 15, thereby facilitating insertion of the fitting portion 21 into the insertion groove 11.

Example one

Referring to fig. 1-3, the first bracket 10 includes a fastening member 12, the fastening member 12 is disposed on one side of the connecting portion 14 and connected to the connecting portion 14, and at least a portion of the fastening member 12 is disposed in the insertion slot 11 and extends into the insertion slot 11 along with the engaging portion 21, and the engaging portion 21 can be engaged with the fastening member 12 to connect the first bracket 10 and the second bracket 20.

It can be understood that the matching portion 21 and the fastening member 12 are connected in a clamping manner, so that the connection between the first support 10 and the second support 20 is stable and reliable, and in the assembling process, the matching portion 21 only needs to be inserted into the insertion groove 11, and the matching portion 21 can be automatically clamped and positioned with the fastening member 12. Compared with the prior art, the welding process is reduced, secondary fixing through other connecting structures is not needed, and the operation difficulty and the production cost are reduced. And the clamping structure is convenient for subsequent disassembly, and when one of the first bracket 10 or the second bracket 20 is damaged, the damaged part can be replaced conveniently without being scrapped integrally, so that the production and maintenance cost is further reduced.

Referring to fig. 2, 4 and 5, in an embodiment, the fastening member 12 includes a positioning protrusion 121, the matching portion 21 has a limiting hole 211, and the positioning protrusion 121 can be inserted into the limiting hole 211 along with the second bracket 20 extending into the inserting groove 11.

Through the cooperation of locating protrusion 121 and spacing hole 211, can realize dismantling between first support 10 and second support 20 and be connected, the installation of being convenient for is dismantled, improves machining efficiency. And when first support 10 or second support 20 damaged, undamaged part can use with other part cooperations, improves the utilization ratio of part. On the other hand, the positioning protrusions 121 and the limiting holes 211 are simple in structure, convenient to process and capable of reducing processing cost.

Further, the positioning protrusion 121 is hemispherical. Thus, when the matching part 21 extends into the insertion slot 11, the spherical surface of the positioning protrusion 121 can play a certain guiding role for the matching part 21, so that the matching part 21 can further extend into the insertion slot 11. Of course, the shape of the positioning protrusion 121 is not limited to a hemispherical shape, and may be a cylinder, a cone, a combined shape, or the like.

The fastening member 12 further includes an elastic piece 122, one end of the elastic piece 122 is connected to the connecting portion 14, and the positioning protrusion 121 is disposed on a side of the elastic piece 122 away from the connecting portion 14. Wherein, stretching into the inserting groove 11 along with the matching part 21, the matching part 21 is abutted against the elastic sheet 122, and the elastic sheet 122 can drive the positioning protrusion 121 to be clamped into the limiting hole 211.

When the second bracket 20 is installed, the matching part 21 extends into the insertion groove 11 and abuts against the elastic piece 122, the elastic piece 122 is pressed to generate displacement, and under the elastic action, the elastic piece 122 can give a pressing force to the matching part 21, so that the matching part 21 is prevented from relatively shaking, and the connection stability is realized. When the matching part 21 extends into a certain distance, the positioning protrusion 121 can automatically penetrate through the limiting hole 211 under the restoring force of the elastic piece 122 to realize clamping, so that stable connection between the first support 10 and the second support 20 is further realized.

In an embodiment, the size of the limiting hole 211 is greater than or equal to the size of the positioning protrusion 121, so that the positioning protrusion 121 is conveniently inserted into the limiting hole 211, and the first bracket 10 and the second bracket 20 are clamped and positioned. In other embodiments, the size of the limiting hole 211 may be smaller than that of the positioning protrusion 121, so long as the positioning protrusion 121 can abut against the edge of the limiting hole 211 under the action of the elastic piece 122, that is, the positioning is also clamped, and thus the stable connection between the first bracket 10 and the second bracket 20 can be achieved.

Further, referring to fig. 5, in a direction from an end of the connecting portion 14 far away from the fixing portion 13 to an end of the connecting portion 14 connected to the fixing portion 13, a vertical distance between the elastic sheet 122 and the connecting portion 14 tends to increase. That is, in the insertion process, along the moving direction of the fitting portion 21 during installation, the elastic piece 122 can play a certain guiding role in the fitting portion 21, and the elastic force of the elastic piece 122 gradually increases during the gradual insertion of the fitting portion 21, so as to increase the difficulty of the fitting portion 21 coming out of the insertion groove 11 after the installation is completed, and further ensure the connection stability between the first bracket 10 and the second bracket 20.

Referring to fig. 2 and 5, the connecting portion 14 is formed with an accommodating groove 141, the accommodating groove 141 is disposed corresponding to the elastic sheet 122, and under the action of an external force, at least a portion of the elastic sheet 122 can extend into the accommodating groove 141. The receiving groove 141 provides a displacement space for the elastic piece 122 to be compressed, thereby further facilitating the mounting and dismounting of the second bracket 20.

Referring to fig. 5 and 6, the height of the elastic piece 122 is H1, the height of the matching portion 21 is H2, and H1 > H2. Thus, after the bracket assembly 100 is installed, the elastic piece 122 is higher than the matching portion 21. Therefore, when the first bracket 10 and the second bracket 20 are detached, the elastic piece 122 has an operation area for pressing, so that the positioning protrusion 121 is separated from the limiting hole 211 under the driving of the elastic piece 122, and the first bracket 10 and the second bracket 20 are separated, thereby facilitating the detachment and rework.

It should be noted that the height of the elastic piece 122 refers to the height from the end of the elastic piece 122 close to the connection between the first bracket 10 and the pilot valve to the end of the first bracket 10 far away from the connection between the first bracket 10 and the pilot valve along the height direction of the first bracket 10 and along the central line direction of the elastic piece 122. The height of the engaging portion 21 refers to the height from the end of the engaging portion 21 connected to the main body portion 22 to the end of the engaging portion 21 away from the main body portion 22 along the height direction of the second bracket 20 and along the central line direction of the engaging portion 21.

Example two

The structure of this embodiment is substantially the same as that of the first embodiment, and the same parts are not described again, except that:

in this embodiment, the matching portion 21 includes a fastening member 12, the fastening member 12 is located on one side of the matching portion 21 and connected to the matching portion 21, and the fastening member 12 can be clamped with the first bracket 10 along with the matching portion 21 extending into the insertion slot 11, so as to connect the first bracket 10 with the second bracket 20.

It can be understood that the first bracket 10 and the fastening member 12 are connected in a clamping manner, so that the connection between the first bracket 10 and the second bracket 20 is stable and reliable, and in the assembling process, only the matching portion 21 needs to be inserted into the insertion groove 11, and the first bracket 10 and the fastening member 12 can be automatically clamped and positioned. Compared with the prior art, the welding process is reduced, secondary fixing through other connecting structures is not needed, and the operation difficulty and the production cost are reduced. And the clamping structure is convenient for subsequent disassembly, and when one of the first bracket 10 or the second bracket 20 is damaged, the damaged part is convenient to replace without being scrapped integrally, so that the production and maintenance cost is further reduced.

In an embodiment, the fastening member 12 includes a positioning protrusion 121, the connecting portion 14 is formed with a limiting hole 211, and the positioning protrusion 121 can be inserted into the limiting hole 211 along with the second bracket 20 extending into the inserting groove 11.

Through the cooperation of location arch 121 and spacing hole 211, can realize dismantling between first support 10 and second support 20 and be connected, the installation of being convenient for is dismantled, improves machining efficiency. And when first support 10 or second support 20 damaged, undamaged part can use with other part cooperations, improves the utilization ratio of part. On the other hand, the positioning protrusions 121 and the limiting holes 211 are simple in structure, convenient to process and capable of reducing processing cost.

The fastening member 12 further includes an elastic piece 122, one end of the elastic piece 122 is connected to the matching portion 21, and the positioning protrusion 121 is disposed on a side of the elastic piece 122 away from the matching portion 21. The first bracket 10 abuts against the elastic piece 122 along with the engaging portion 21 extending into the inserting groove 11, and the elastic piece 122 can drive the positioning protrusion 121 to be inserted into the limiting hole 211.

When the second bracket 20 is installed, the matching part 21 extends into the insertion groove 11 and enables the elastic piece 122 to be abutted against the first bracket 10, the elastic piece 122 is pressed to generate displacement, and under the elastic action, the elastic piece 122 can provide a pressing force, so that the matching part 21 is prevented from relatively shaking, and the connection stability is realized. When the matching part 21 extends into a certain distance, the positioning protrusion 121 can be automatically clamped into the limiting hole 211 under the restoring force of the elastic sheet 122 to realize clamping, so that stable connection between the first bracket 10 and the second bracket 20 is further realized.

In one embodiment, the vertical distance between the elastic piece 122 and the engaging portion 21 increases in the direction from the end of the engaging portion 21 away from the main portion 22 to the end of the engaging portion 21 connected to the main portion 22. That is, in the process of inserting, along the moving direction of the matching portion 21 during installation, the elastic piece 122 can play a certain guiding role in guiding the matching portion 21 to extend into the inserting groove 11, and the elastic force of the elastic piece 122 is gradually increased in the process of gradually extending into the matching portion 21, so that the difficulty of the matching portion 21 coming out of the inserting groove 11 after installation is increased, and the connection stability between the first support 10 and the second support 20 is further ensured.

Furthermore, the fitting portion 21 has an accommodating groove 141, the accommodating groove 141 corresponds to the elastic piece 122, and under the action of an external force, at least a portion of the elastic piece 122 can extend into the accommodating groove 141. The receiving groove 141 provides a displacement space for the elastic piece 122 to be compressed, thereby further facilitating the mounting and dismounting of the second bracket 20.

The height of the elastic piece 122 is smaller than that of the fitting portion 21. In this way, the elastic piece 122 is prevented from interfering with the main body 22 and obstructing the movement of the elastic piece 122, thereby causing inconvenience to the installation.

The height of the elastic piece 122 refers to the height between the two ends of the elastic piece 122 along the height direction of the second bracket 20 and along the center line direction of the elastic piece 122. The height of the engaging portion 21 refers to the height from the end of the engaging portion 21 connected to the main body portion 22 to the end of the engaging portion 21 away from the main body portion 22 along the height direction of the second bracket 20 and along the central line direction of the engaging portion 21.

EXAMPLE III

The structure of this embodiment is basically the same as that of the second embodiment, and the same parts are not described again, except that:

it is defined that after the first bracket 10 and the second bracket 20 are installed, a side of the matching portion 21 close to the connecting portion 14 is an inner side, and a side of the matching portion 21 far from the connecting portion 14 is an outer side. That is, in the second embodiment, the fastener 12 is located inside the fitting portion 21.

In this embodiment, the guiding portion 15 is an integral structure with a U-shape, and the guiding portion 15 is connected to the connecting portion 14 and encloses the insertion slot 11. The guide portion 15 is provided with a limiting hole 211 at a side far away from the connecting portion 14. Correspondingly, the fastening member 12 is located outside the matching portion 21, i.e. the fastening member 12 of the present embodiment and the fastening member 12 of the second embodiment are symmetrically arranged with respect to the matching portion 21. Thus, when the matching portion 21 extends into the insertion slot 11, the positioning protrusion 121 on the fastening member 12 can be driven by the elastic piece 122 to be inserted into the limiting hole 211 formed on the guiding portion 15, so as to connect the first bracket 10 and the second bracket 20.

Further, when the positioning protrusion 121 is caught in the stopper hole 211, the elastic piece 122 is provided to partially protrude from the end of the guide 15. The length of the end of the elastic piece 122 protruding the guiding portion 15 can be set reasonably, so as to avoid interference on the connection between the second bracket 20 and the main valve, thereby affecting the installation. Meanwhile, the elastic piece 122 is convenient to press by reserving a certain length, so that the elastic piece 122 drives the positioning protrusion 121 to be separated from the limiting hole 211, and the disassembly efficiency can be further improved.

The present application further provides a switching valve including a main valve, a pilot valve, and the bracket assembly 100 described above.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims (10)

1. A mount assembly, comprising:

the device comprises a first bracket (10), wherein the first bracket (10) is provided with an inserting groove (11);

a second bracket (20), the second bracket (20) comprising a mating portion (21);

the first support (10) comprises a fastener (12), the fastener (12) is at least partially positioned in the insertion groove (11) and extends into the insertion groove (11) along with the matching part (21), and the matching part (21) can be clamped with the fastener (12) to connect the first support (10) with the second support (20);

or the matching part (21) comprises a buckling piece (12), the buckling piece (12) extends into the inserting groove (11) along with the matching part (21), and the buckling piece (12) can be clamped with the first support (10) so as to connect the first support (10) with the second support (20).

2. The rack assembly of claim 1, wherein the first rack (10) further comprises:

a fixed part (13);

a connecting portion (14), one end of the connecting portion (14) being connected to the fixing portion (13);

the guide part (15) is connected with the connecting part (14), and the insertion groove (11) is enclosed by the guide part (15) and the connecting part (14).

3. The bracket assembly according to claim 2, wherein the guide portion (15) comprises two guide elements (151), and the two guide elements (151) are symmetrically arranged on two sides of the connecting portion (14) and enclose the insertion groove (11) with the connecting portion (14).

4. The bracket assembly according to claim 2, wherein the fastening member (12) comprises a positioning protrusion (121), the mating portion (21) is provided with a limiting hole (211), the positioning protrusion (121) can be inserted into the limiting hole (211) along with the second bracket (20) extending into the insertion groove (11);

or, the connecting part (14) is provided with a limiting hole (211), the connecting part extends into the inserting groove (11) along with the second support (20), and the positioning protrusion (121) can be clamped into the limiting hole (211).

5. The bracket assembly of claim 4, wherein the fastener (12) further comprises:

one end of the elastic piece (122) is connected with the connecting part (14), and the positioning bulge (121) is arranged on one side, far away from the connecting part (14), of the elastic piece (122);

or one end of the elastic sheet (122) is connected with the matching part (21), and the positioning bulge (121) is arranged on one side of the elastic sheet (122) far away from the matching part (21);

the elastic piece (122) can drive the positioning protrusion (121) to be clamped into the limiting hole (211) along with the fact that the matching part (21) extends into the inserting groove (11).

6. The bracket assembly according to claim 5, wherein the vertical distance between the elastic sheet (122) and the connecting portion (14) is increased in a direction from an end of the connecting portion (14) far away from the fixing portion (13) to an end of the connecting portion (14) connected with the fixing portion (13);

or, the second support (20) further comprises a main body part (22), the main body part (22) is connected with the matching part (21), and the vertical distance between the elastic sheet (122) and the matching part (21) is increased in the direction from one end, far away from the main body part (22), of the matching part (21) to the end, connected with the main body part (22), of the matching part (21).

7. The bracket assembly according to claim 5, wherein the connecting portion (14) defines a receiving groove (141), the receiving groove (141) is disposed corresponding to the elastic sheet (122), and the elastic sheet (122) can at least partially extend into the receiving groove (141) under an external force;

or, the cooperation portion (21) is provided with an accommodating groove (141), the accommodating groove (141) is arranged corresponding to the elastic piece (122), and under the action of external force, at least part of the elastic piece (122) can extend into the accommodating groove (141).

8. The bracket assembly according to claim 5, wherein the height of the elastic piece (122) is H1, the height of the matching part (21) is H2, H1 > H2;

or the height of the elastic sheet (122) is smaller than that of the matching part (21).

9. The bracket assembly according to claim 1, wherein an end of the mating portion (21) adjacent to the first bracket (10) is formed with a chamfer (212).

10. A switching valve, characterized in that it comprises a main valve, a pilot valve and a bracket assembly according to any one of claims 1-9, and that said first bracket (10) is connected to said pilot valve or said main valve, and that said second bracket (20) is connected to said main valve or said pilot valve, respectively.

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