CN219317362U

CN219317362U - Fixed mounting assembly

Info

Publication number: CN219317362U
Application number: CN202223257199.5U
Authority: CN
Inventors: 李振中; 于钦萍; 赵捍清; 杜美娜; 刘涛
Original assignee: Fule Suzhou New Material Co ltd; Beijing Tianshan New Material Technology Co ltd
Current assignee: Fule Suzhou New Material Co ltd; Beijing Tianshan New Material Technology Co ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-07-07
Anticipated expiration: 2032-12-05

Abstract

The utility model provides a fixed mounting assembly. The fixed mounting assembly includes: a connection bracket configured to be connected to a target mounting structure, the connection bracket having a receiving cavity; and a plurality of connection structures are arranged on the connection support, the connection structures are arranged at intervals along the length extending direction of the connection support, the connection structures comprise bases and connecting pieces, the bases are configured to be provided with mounting pieces, one ends of the connecting pieces are connected with the bases, and the other ends of the connecting pieces are fixedly adhered in the accommodating cavity. According to the fixed mounting assembly, the problem that when an existing fixing mode is adopted, torque fluctuation generated by tightening bolts can influence the mounting accuracy of a workpiece in the process of connecting and fixing the workpiece through a large number of screws and nuts can be solved.

Description

Fixed mounting assembly

Technical Field

The utility model relates to the technical field of industrial assembly, in particular to a fixed mounting assembly.

Background

Along with the development of modern science and technology and the improvement of people's living standard, people are to glass curtain wall, reflector wall and can be vividly demonstrate data, can also consult the demand of issuing, control, the oversized display screen of analysis increase gradually, in the equipment process of these large-scale work pieces such as glass, reflector, display screen, generally adopt the fixed mode of screw rod cooperation nut, adopt a large amount of screw rods and nut to realize the connection of work piece and fix, assembly and adjustment process waste time and energy to in the installation, when tightening the bolt, can produce moment fluctuation, produce adverse effect to the installation accuracy of work piece easily.

Disclosure of Invention

The utility model mainly aims to provide a fixed installation assembly which can solve the problem that when an existing fixing mode is adopted, torque fluctuation generated by tightening bolts can influence the installation accuracy of a workpiece in the process of connecting and fixing the workpiece through a large number of screws and nuts.

In order to achieve the above object, according to an aspect of the present utility model, there is provided a fixed mounting assembly configured to mount a piece to be mounted on a target mounting structure, the fixed mounting assembly comprising: a connection bracket configured to be connected to a target mounting structure, the connection bracket having a receiving cavity; and a plurality of connection structures are arranged on the connection support, the connection structures are arranged at intervals along the length extending direction of the connection support, the connection structures comprise bases and connecting pieces, the bases are configured to be provided with mounting pieces, one ends of the connecting pieces are connected with the bases, and the other ends of the connecting pieces are fixedly adhered in the accommodating cavity.

Further, the connecting support comprises a bottom plate, a plurality of through holes are formed in the bottom plate and are distributed at intervals along the length direction of the connecting support, the connecting piece is arranged in the accommodating cavity in a penetrating mode through the through holes, and gaps are formed between the inner wall surfaces of the through holes and the outer wall surfaces of the connecting piece.

Further, the connecting bracket further comprises a first side plate and a second side plate, and the first side plate and the second side plate are positioned on opposite sides of the bottom plate and form a containing cavity with the bottom plate; and/or, the fixed mounting assembly further comprises a blocking structure, the blocking structure is mounted in the accommodating cavity and forms an encapsulation space with the bottom plate, the encapsulation space is filled with sealant, one end of the connecting piece, which is far away from the base, penetrates through the encapsulation space, and is bonded and fixed with the connecting support through the sealant.

Further, the distance between the end face of the sealant in the accommodating cavity and the bottom face of the connecting support is L1, the depth of the accommodating cavity is L2, the ratio of the end face of the sealant to the bottom face of the connecting support is a, and the value range of a is more than or equal to 0.34 and less than or equal to 0.56.

Further, the blocking structure comprises a first baffle and a second baffle, the heights of the first baffle and the second baffle are h, the lengths of the first baffle and the second baffle are L3, the widths of the first baffle and the second baffle are L4, the value range of h is more than or equal to 12mm and less than or equal to 25mm, the value range of L3 is more than or equal to 25mm and less than or equal to 35mm, and the value range of L4 is more than or equal to 8mm and less than or equal to 12mm.

Further, a second preset distance L5 is arranged between the first baffle and the second baffle, the value range of the second preset distance L5 is 20 mm-40 mm, and the through hole is positioned between the first baffle and the second baffle.

Further, the fixed mounting assembly further includes a seal coupled between the base plate and the connector to seal the through hole.

Further, the minimum distance between the outer edge of the sealing piece and the inner wall surface of the through hole is L6, and the value range of L6 is more than or equal to 5mm and less than or equal to L6 and less than or equal to 10mm.

Further, the base includes mounting structure and connecting bulge, and mounting structure is fixed with waiting to install the piece bonding, and connecting bulge is provided with the installation cavity near the one end of linking bridge, is provided with the screw thread in the installation cavity, and the one end that the connecting piece is close to the base is installed in the installation cavity.

Further, the connecting piece is including the first linkage segment, second linkage segment and the third linkage segment that connect gradually, and the second linkage segment is located between first linkage segment and the third linkage segment, and first linkage segment and the protruding threaded connection of connection get into after the third linkage segment passes sealing member and through-hole in proper order and hold the intracavity, and the top surface of second linkage segment bonds with the bottom surface of sealing member to can carry out the shutoff to the sealing member.

By applying the technical scheme of the utility model, the connecting bracket and the connecting structure are arranged, the connecting structure comprises the base and the connecting piece connected with the base, the piece to be installed is installed on the base, one end of the connecting piece is connected with one end of the base far away from the piece to be installed, the other end of the connecting piece is fixedly connected with the base in a containing cavity of the connecting bracket in an adhering manner, the connecting piece is connected with one end of the base far away from the piece to be installed in an adhering manner, the other end of the connecting piece is fixedly connected with the connecting bracket in the containing cavity in an adhering manner, so that the piece to be installed can be installed on the connecting bracket, and finally, the connecting bracket is connected with the target installing structure, so that the installation of the piece to be installed can be completed. Because the to-be-installed piece and the connecting support are fixed in an adhesive mode, in the adhesive process, external force (such as pulling force or torsion force) which enables the to-be-installed piece to be separated from the base or move relative to the base cannot be applied to the connecting piece, and moment fluctuation does not exist, so that high-precision installation and positioning of the to-be-installed piece can be realized. In addition, the existing mechanical equipment can be utilized for glue injection, so that the installation efficiency can be greatly improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 shows a schematic overall construction of a fixed mounting assembly of an embodiment of the present utility model;

FIG. 2 illustrates a partial cross-sectional view of a fixed mounting assembly of an embodiment of the present utility model;

FIG. 3 illustrates another angular partial cross-sectional view of a fixed mounting assembly of an embodiment of the present utility model; and

fig. 4 shows a schematic dimensional and structural diagram of a fixed mounting assembly of an embodiment of the present utility model.

Wherein the above figures include the following reference numerals:

10. a connecting bracket; 11. a receiving chamber; 12. a first side plate; 13. a bottom plate; 14. a second side plate; 15. a through hole; 20. a connection structure; 21. a base; 211. a mounting structure; 212. a connection protrusion; 2121. a mounting cavity; 22. a connecting piece; 221. a first connection section; 222. a second connection section; 223. a third connecting section; 30. a piece to be mounted; 40. a blocking structure; 41. a first baffle; 42. a second baffle; 50. sealing glue; 60. and a seal.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Referring now to fig. 1 to 4 in combination, the present utility model provides a fixed mounting assembly configured to mount a member to be mounted 30 on a target mounting structure 211, the fixed mounting assembly comprising: each of the connection brackets 10 is configured to be connected to the target mounting structure 211, the connection bracket 10 having a receiving cavity 11; and a plurality of connection structures 20, a plurality of connection structures 20 are arranged on the connection support 10, the connection structures 20 are arranged at intervals along the length extending direction of the connection support 10, the connection structures 20 comprise a base 21 and a connecting piece 22, the base 21 is configured to mount the piece 30 to be mounted, one end of the connecting piece 22 is connected with the base 21, and the other end of the connecting piece 22 is fixedly adhered in the accommodating cavity 11.

In this embodiment, the to-be-installed piece 30 is installed on the base 21, one end of the connecting piece 22 is connected with one end of the base 21 far away from the to-be-installed piece 30, the other end of the connecting piece 22 is adhesively fixed in the accommodating cavity 11 of the connecting bracket 10, during installation, the to-be-installed piece 30 and the base 21 are adhesively fixed together in an adhesive manner, one end of the connecting piece 22 far away from the to-be-installed piece 30 is connected with the base 21, then the other end of the connecting piece 22 and the connecting bracket 10 are adhesively fixed in the accommodating cavity 11, so that the to-be-installed piece 30 can be installed on the connecting bracket 10, and finally the connecting bracket 10 and the target installation structure 211 are connected to complete the installation of the to-be-installed piece 30. The above-mentioned fixed mounting assembly is used as the transitional mounting structure 211, the to-be-mounted member 30 and the connecting bracket 10 are fixed by means of adhesion, and in the adhesion process, no external force (such as a pulling force or a torsion force) is applied to the connecting member 22 to enable the connecting member to be separated from the base 21 or move relative to the base 21, and no moment fluctuation exists, so that high-precision mounting and positioning of the to-be-mounted member 30 can be realized. In addition, the existing mechanical equipment can be utilized for glue injection, so that the installation efficiency can be greatly improved.

It should be noted that the number of the connection brackets 10 may be set according to the actual installation requirement, and the distance between two adjacent connection brackets 10 may be adjusted accordingly according to the actual installation requirement.

In one embodiment of the present utility model, the connecting piece 22 may be a screw, and the connecting bracket 10 may be a C-shaped channel, a U-shaped channel, or an aluminum profile.

Referring to fig. 1 to 3 in combination, in one embodiment of the present utility model, the connection bracket 10 includes a base plate 13, a plurality of through holes 15 are provided on the base plate 13, the plurality of through holes 15 are arranged at intervals along the length direction of the connection bracket 10, the connection member 22 is inserted into the receiving chamber 11 through the through holes 15, and a gap is provided between an inner wall surface of the through holes 15 and an outer wall surface of the connection member 22.

In the present embodiment, a gap is provided between the inner wall surface of the through hole 15 and the outer wall surface of the connecting member 22, so that the connecting member 22 is conveniently penetrated into the accommodating chamber 11 from the through hole 15, and the mounting efficiency can be improved.

Referring to fig. 2 and 3 in combination, in one embodiment of the present utility model, the connection bracket 10 further includes a first side plate 12 and a second side plate 14, and the first side plate 12 and the second side plate 14 are located at opposite sides of the bottom plate 13 and form the receiving chamber 11 with the bottom plate 13. The fixed mounting assembly further comprises a blocking structure 40, the blocking structure 40 is mounted in the accommodating cavity 11 and forms an encapsulation space with the bottom plate 13, the encapsulation space is filled with sealant 50, one end, far away from the base 21, of the connecting piece 22 is penetrated in the encapsulation space and is adhered and fixed with the connecting support 10 through the sealant 50.

In this embodiment, the first side plate 12, the second side plate 14 and the bottom plate 13 enclose together to form the accommodating cavity 11, the blocking structure 40 is installed in the accommodating cavity 11 and forms an encapsulation space with the bottom plate 13, one end of the connecting piece 22 away from the base 21 is penetrated in the encapsulation space, after the sealant 50 is cured, the connecting piece 22 and the connecting bracket 10 can be fixedly connected, the encapsulation space can limit the sealant 50, and the sealant 50 is prevented from flowing in the accommodating cavity 11 before curing, so that the connection strength between the connecting piece 22 and the connecting bracket 10 can be ensured.

In one embodiment of the present utility model, the connection bracket 10 includes only the bottom plate 13, the blocking structure 40 may be a rectangular bracket having openings at both ends, the blocking structure 40 is mounted on the bottom plate 13 to form a packaging space, at this time, the connection member 22 sequentially passes through the through hole 15 on the bottom plate 13 and the opening of the blocking structure 40 near one end of the bottom plate 13 to enter the packaging space, and the sealant 50 is injected into the packaging space from the opening of the blocking structure 40 far from one end of the bottom plate 13 to fixedly connect the connection member 22 with the bottom plate 13.

In one embodiment of the present utility model, the sealant 50 may be selected from a high precision positioning adhesive or a room temperature curable reactive adhesive, such as epoxy adhesive, polyurethane adhesive, etc., which has the characteristics of low viscosity, rapid curing, high strength, low shrinkage, good adhesion and high holding power.

In one embodiment of the present utility model, the distance between the end surface of the sealant 50 in the accommodating cavity 11 and the bottom surface of the connecting bracket 10 is L1, the depth of the accommodating cavity 11 is L2, the ratio of the two is a, and the value range of a is 0.34-0.56. The blocking structure 40 comprises a first baffle 41 and a second baffle 42, the heights of the first baffle 41 and the second baffle 42 are h, the lengths of the first baffle 41 and the second baffle 42 are L3, the widths of the first baffle 41 and the second baffle 42 are L4, the value range of h is more than or equal to 12mm and less than or equal to 25mm, the value range of L3 is more than or equal to 25mm and less than or equal to 35mm, and the value range of L4 is more than or equal to 8mm and less than or equal to 12mm.

Through the arrangement, the waste of the sealant 50 can be reduced and the cost can be saved on the premise of ensuring the bonding strength between the connecting piece 22 and the connecting bracket 10.

In one embodiment of the present utility model, the connection bracket 10 may be an L-shaped steel plate, and the first and

second baffles

41 and 42 enclose a column-shaped packing space with the L-shaped steel plate.

Referring to fig. 1 to 4 in combination, in one embodiment of the present utility model, a second preset distance L5 is provided between the first baffle 41 and the second baffle 42, where the value of the second preset distance L5 is 20mm less than or equal to L5 less than or equal to 40mm, and the through hole 15 is located between the first baffle 41 and the second baffle 42.

In this embodiment, the first baffle 41 and the second baffle 42 are respectively disposed at two sides of the through hole 15, and the range of the distance L5 between the first baffle 41 and the second baffle 42 satisfies 20mm less than or equal to L5 less than or equal to 40mm, so that the size of the packaging space enclosed by the first baffle 41, the second baffle 42 and the bottom plate 13 can be ensured, and the connecting piece 22 and the connecting bracket 10 can be fixedly connected after the packaging space is filled with glue, thereby ensuring the structural strength.

In one embodiment of the present utility model, the first baffle 41 and the second baffle 42 may be made of polyurethane foam material, and may be made of polypropylene resin material.

Referring now to fig. 1-4 in combination, in one embodiment of the utility model, the mounting assembly further includes a seal 60, the seal 60 being coupled between the base 13 and the connector 22 to seal the through hole 15.

In this embodiment, the sealing member 60 can seal the through hole 15 on the connection bracket 10, so that the problem that the sealant 50 in the packaging space flows out from the gap between the outer wall surface of the connection member 22 and the inner wall surface of the through hole 15 before solidification, so as to pollute the to-be-mounted member 30, and the problem that the component of the sealant 50 in the packaging space is insufficient due to the fact that part of the sealant 50 flows out from the through hole 15, so that the strength of the overall structure after solidification is weaker, and looseness occurs in the process of transporting or mounting the sealant in the target mounting structure 211 can be avoided.

In one embodiment of the present utility model, the seal 60 may be selected from double sided tape or butyl tape.

In one embodiment of the present utility model, the minimum distance between the outer edge of the seal 60 and the inner wall surface of the through hole 15 is L6, and the value of L6 is 5 mm.ltoreq.L6.ltoreq.10mm.

In this embodiment, the sealing member 60 is adhered to the bottom plate 13, the minimum distance L6 between the outer edge of the sealing member 60 and the inner wall surface of the through hole 15 is less than or equal to 5mm and less than or equal to 10mm, so that the adhesion area between the sealing member 60 and the bottom plate 13 is ensured on the premise that the sealing member 60 can seal the through hole 15, and after the glue is injected into the packaging space, the sealing member 60 can bear the pressure of the sealing glue 50, and the sealing member 60 cannot be separated from the bottom plate 13 of the connecting bracket 10 due to the pressure of the sealing glue 50.

Referring to fig. 1 to 4 in combination, in one embodiment of the present utility model, the base 21 includes a mounting structure 211 and a connection protrusion 212, the mounting structure 211 is adhesively fixed to the member to be mounted 30, one end of the connection protrusion 212 near the connection bracket 10 is provided with a mounting cavity 2121, threads are provided in the mounting cavity 2121, and one end of the connection member 22 near the base 21 is mounted in the mounting cavity 2121.

In this embodiment, one end of the connecting member 22 is screwed with the connecting protrusion 212, so that the connection member 22 or the base 21 is convenient to detach, and when damaged, only the damaged member needs to be detached for replacement, so that the whole replacement is not needed, and the cost can be saved. In addition, due to the threaded connection between the two, the relative position between the connecting support 10 and the base 21 can be adjusted, and the distance between the connecting support 10 and the base 21 can be adjusted before glue injection according to actual needs, so that the applicability of the fixed installation assembly is improved.

Referring to fig. 2 and 3 in combination, in one embodiment of the present utility model, the connection member 22 includes a first connection section 221, a second connection section 222 and a third connection section 223 connected in sequence, the second connection section 222 is located between the first connection section 221 and the third connection section 223, the first connection section 221 is in threaded connection with the connection protrusion 212, the third connection section 223 sequentially passes through the sealing member 60 and the through hole 15 and then enters the accommodating cavity 11, and the top surface of the second connection section 222 is bonded with the bottom surface of the sealing member 60 and can seal the middle hole of the sealing member 60.

In this embodiment, the sealing element 60 is provided with a through hole, the connecting element 22 sequentially passes through the through hole 15 on the sealing element 60 and the through hole 15 on the connecting bracket 10 and then enters the accommodating cavity 11, at this time, the third connecting section 223 is located in the accommodating cavity 11, the second connecting section 222 abuts against the sealing element 60, and the second connecting section 222 can seal the through hole 15 on the sealing element 60. The second connecting section 222 also supports the seal 60, sharing part of the pressure of the sealant 50 against the seal 60.

In an embodiment of the present utility model, the to-be-installed piece 30 may be a plurality of reflectors, and in an actual application scenario, the plurality of reflectors need to be fixed at different angles, so that each reflector needs to be ensured to be fixedly installed on the to-be-installed piece at a preset angle, so as to meet the scenario requirement. At this time, when a plurality of connecting brackets 10 and a plurality of bases 21 are needed, firstly, the plurality of bases 21 are adhered to the reflectors and precision adjustment is performed, then, a plurality of connecting pieces 22 are respectively installed on the bases 21, then, the blocking structure 40 is installed at the corresponding position of the accommodating cavity 11, the blocking structure 40 and the bottom plate 13 form a packaging space, then, the sealing piece 60 is adhered to one side of the bottom plate 13 close to the bases 21 so as to seal the through holes 15 on the bottom plate 13 of the connecting bracket 10, then, the connecting bracket 10 is sleeved on each connecting piece 22, finally, the sealing glue 50 is filled into each packaging space, and the sealing glue 50 is stood for a certain time at room temperature until the sealing glue 50 is solidified. Compared with the traditional installation mode through bolted connection, the staff does not need to manually or tighten bolts one by one through a manipulator, and because the traditional bolt fixing process can not ensure that each bolt can be screwed to a preset position, the reflector can not be fixed at a preset angle, and by the aid of the installation method, the sealant 50 can not apply tension or torsion force to the connecting piece 22 in the curing process, the reflector can be fixedly installed at the preset angle, and further the requirements of application scenes can be met.

From the above description, it can be seen that the above-described embodiments of the present utility model achieve the following technical effects: be provided with linking bridge and connection structure, connection structure includes the base and with the connecting piece of its connection, treat the installed part and install on the base, the one end of connecting piece is kept away from the one end of treating the installed part with the base and is connected, the other end of connecting piece bonds fixedly in linking bridge holds the intracavity, during the installation, will treat installed part and base fixed connection together through the mode of bonding at first, keep away from the one end of treating the installed part with the connecting piece with the base and be connected, then make the other end and the linking bridge bonding of connecting piece fix and hold the intracavity, thereby can install the installed part on the linking bridge, be connected the installing of treating the installed part with target mounting structure again at last. Because the to-be-installed piece and the connecting support are fixed in an adhesive mode, in the adhesive process, external force (such as pulling force or torsion force) which enables the to-be-installed piece to be separated from the base or move relative to the base cannot be applied to the connecting piece, and moment fluctuation does not exist, so that high-precision installation and positioning of the to-be-installed piece can be realized. In addition, the existing mechanical equipment can be utilized for glue injection, so that the installation efficiency can be greatly improved.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A fixed mounting assembly configured to mount a piece (30) to be mounted on a target mounting structure, the fixed mounting assembly comprising:

-a connection bracket (10), the connection bracket (10) being configured to be connected with the target mounting structure, the connection bracket (10) having a receiving cavity (11); and

a plurality of connection structure (20), be provided with a plurality of on the linking bridge (10) connection structure (20), and a plurality of connection structure (20) are followed the length extending direction interval setting of linking bridge (10), connection structure (20) include base (21) and connecting piece (22), base (21) are constructed to be installed wait install piece (30), the one end of connecting piece (22) with base (21) are connected, the other end bonding of connecting piece (22) is fixed in hold in chamber (11).

2. The fixed mounting assembly according to claim 1, wherein the connecting bracket (10) comprises a bottom plate (13), a plurality of through holes (15) are formed in the bottom plate (13), the through holes (15) are distributed at intervals along the length direction of the connecting bracket (10), the connecting piece (22) is penetrated in the accommodating cavity (11) through the through holes (15), and a gap is formed between the inner wall surface of the through holes (15) and the outer wall surface of the connecting piece (22).

3. The fixed mounting assembly of claim 2, wherein the connecting bracket (10) further comprises a first side plate (12) and a second side plate (14), the first side plate (12) and the second side plate (14) being located on opposite sides of the bottom plate (13) and forming the receiving cavity (11) with the bottom plate (13); and/or, the fixed mounting assembly further comprises a blocking structure (40), the blocking structure (40) is mounted in the accommodating cavity (11) and forms an encapsulation space with the bottom plate (13), the encapsulation space is filled with sealant (50), and one end, far away from the base (21), of the connecting piece (22) is penetrated in the encapsulation space and is adhered and fixed with the connecting support (10) through the sealant (50).

4. A fixed mounting assembly according to claim 3, wherein the distance between the end surface of the sealant (50) in the accommodating cavity (11) and the bottom surface of the connecting bracket (10) is L1, the depth of the accommodating cavity (11) is L2, the ratio of the two is a, and the value of a is more than or equal to 0.34 and less than or equal to 0.56.

5. A fixed mounting assembly according to claim 3, wherein the blocking structure (40) comprises a first baffle (41) and a second baffle (42), the heights of the first baffle (41) and the second baffle (42) are h, the lengths of the first baffle (41) and the second baffle (42) are L3, the widths of the first baffle (41) and the second baffle (42) are L4, wherein h is equal to or less than 12mm and equal to or less than 25mm, L3 is equal to or less than 25mm and equal to or less than 35mm, and L4 is equal to or less than 8mm and equal to or less than 12mm.

6. The fixed mounting assembly of claim 5, wherein a second preset distance L5 is provided between the first baffle (41) and the second baffle (42), the second preset distance L5 has a value range of 20mm +.l5 +.40 mm, and the through hole (15) is located between the first baffle (41) and the second baffle (42).

7. A fixed mounting assembly according to claim 3, further comprising a seal (60), the seal (60) being connected between the base plate (13) and the connection member (22) to seal the through hole (15).

8. The fixed mounting assembly of claim 7, wherein a minimum distance between an outer edge of the seal (60) and an inner wall surface of the through hole (15) is L6, and wherein L6 has a value in the range of 5mm ∈l6 ∈10mm.

9. The fixed mounting assembly of claim 7, wherein the base (21) comprises a mounting structure (211) and a connecting protrusion (212), the mounting structure (211) is fixedly adhered to the member to be mounted (30), a mounting cavity (2121) is formed in one end, close to the connecting bracket (10), of the connecting protrusion (212), threads are formed in the mounting cavity (2121), and one end, close to the base (21), of the connecting member (22) is mounted in the mounting cavity (2121).

10. The fixed mounting assembly according to claim 9, wherein the connecting member (22) comprises a first connecting section (221), a second connecting section (222) and a third connecting section (223) which are sequentially connected, the second connecting section (222) is located between the first connecting section (221) and the third connecting section (223), the first connecting section (221) is in threaded connection with the connecting protrusion (212), the third connecting section (223) sequentially passes through the sealing member (60) and the through hole (15) and then enters the accommodating cavity (11), and the top surface of the second connecting section (222) is adhered to the bottom surface of the sealing member (60) and can seal the sealing member (60).