Connecting structure and door and window assembly

Abstract

The utility model discloses a connecting structure and a door and window assembly, and relates to the technical field of doors and windows, the connecting structure comprises a first profile, and the first profile is provided with a first positioning part; a narrow cavity is formed in the second profile, a glue injection part communicated with the narrow cavity is arranged in the second profile, and a second positioning part is arranged on the second profile; one end of the connecting piece is connected with the first sectional material in an inserted mode, the other end of the connecting piece is connected with the narrow cavity of the second sectional material in an inserted mode, and the inserted connection direction of the first sectional material and the connecting piece is perpendicular to the inserted connection direction of the second sectional material and the connecting piece; the gap between the connecting piece and the first profile and the gap between the connecting piece and the second profile are communicated through the flow guide part, and the adhesive injection part and the flow guide part are communicated through the narrow cavity so that adhesive can flow into the gap between the connecting piece and the first profile and the gap between the connecting piece and the second profile. According to the technical scheme provided by the utility model, the technical problem that an existing connecting structure is easily stressed and loosened during end milling is solved.

Description

Technical Field

[0001] This utility model relates to the field of door and window technology, and in particular to a connection structure and door and window components. Background Technology

[0002] The connection structure of narrow cavities in doors and windows mainly involves the connection method between door and window frames, used to improve the overall strength, sealing performance, and ease of assembly of doors and windows. Currently, when splicing profiles with different widths and heights, a 90° splicing is conventionally used. Because glass needs to be installed after the profiles are spliced ​​on all four sides, the indoor and outdoor heights of the profiles are different. Therefore, one side of the spliced ​​profile needs to be milled to allow for the splicing. Now, a connection method using connectors with screw grooves is generally adopted.

[0003] However, during end milling, the existing connection structure is prone to loosening under stress, leading to gaps or failure of the connection, resulting in water leakage and safety hazards. Utility Model Content

[0004] The main purpose of this invention is to propose a connection structure that aims to solve the technical problem that existing connection structures are prone to loosening under stress during end milling.

[0005] For the above purposes, the connection structure proposed in this utility model includes:

[0006] A first profile, wherein the first profile is provided with a first positioning part;

[0007] A second profile, the second profile having a narrow cavity inside and a glue injection part communicating with the narrow cavity, the second profile having a second positioning part; and

[0008] A connector, one end of which is inserted into the first profile and the other end of which is inserted into the narrow cavity of the second profile, wherein the insertion direction of the first profile and the connector is perpendicular to the insertion direction of the second profile and the connector, the connector having a first mating part and a second mating part, the first mating part and the first positioning part cooperating to realize the connection between the first profile and the connector, the second mating part and the second positioning part cooperating to realize the connection between the second profile and the connector, the connector having a guide part, the gap between the connector and the first profile and the gap between the connector and the second profile being connected through the guide part, the glue injection part and the guide part being connected through the narrow cavity to allow adhesive to flow into the gap between the connector and the first profile and the gap between the connector and the second profile.

[0009] In one embodiment, the second profile is provided with at least two injection holes spaced apart, and the at least two injection holes form the injection portion;

[0010] The connector includes two independently arranged fixed bases. Each fixed base has a first support surface, a second support surface, and a third support surface that are adjacent to each other. The first support surface has an injection port for injecting the adhesive, and the second support surface has a drainage port. One end of the drainage port is connected to the gap between the connector and the first profile, and the other end is connected to the injection port so that the adhesive flows from the injection port through the drainage port into the gap between the connector and the first profile. The third support surface has a fixed bottom hole that is connected to the injection port. The fixed bottom hole forms the first mating part, and the injection port and the drainage port form the guide part.

[0011] The glue inlet is connected to the glue injection hole so that the adhesive enters the glue inlet through the glue injection hole.

[0012] In one embodiment, the second support surface is further provided with a drainage groove spaced apart from the drainage port. The drainage groove is connected to the gap between the connector and the second profile. The drainage groove penetrates the first support surface and is connected to one of the injection holes, so that the adhesive flows from the injection hole through the drainage groove into the gap between the connector and the second profile.

[0013] In one embodiment, the first positioning part and the first mating part are threaded holes, and the first positioning part and the first mating part are fixedly connected by screws; and / or,

[0014] The second positioning part and the second mating part are threaded holes, and the second positioning part and the second mating part are fixedly connected by screws.

[0015] In one embodiment, the first profile includes an indoor end, a connecting component connected to the indoor end, and an outdoor end connected to the connecting component, arranged sequentially. The indoor end is provided with a groove, and the outdoor end is provided with an overlapping portion on the side facing the indoor end.

[0016] Both of the fixed bases include a base body, a correction slope protruding from the base body, and a locking part recessed in the base body;

[0017] In one of the fixed bases, the correction slope engages with the groove, and in the other fixed base, the clamping part engages with the overlapping part.

[0018] In one embodiment, the groove has a groove bottom and a first protrusion and a second protrusion connected to the groove bottom. The first protrusion and the second protrusion are disposed opposite to each other and are inclined in a direction away from the groove bottom. The inclination angle of the first protrusion and the second protrusion is the same as the slope of the correction slope.

[0019] In one embodiment, the distance between the base body and the bottom of the groove is equal to 0.2 mm.

[0020] In one embodiment, two first mating portions are provided at intervals along the height direction of the connector, and each first mating portion is provided with a corresponding first positioning portion.

[0021] In one embodiment, the distance between the second positioning part and the second mating part is equal to 0.3 mm.

[0022] This utility model also provides a door and window assembly, the door and window assembly including a connecting structure, the connecting structure including:

[0023] A first profile, wherein the first profile is provided with a first positioning part;

[0024] A second profile, the second profile having a narrow cavity inside and a glue injection part communicating with the narrow cavity, the second profile having a second positioning part; and

[0025] A connector is provided, one end of which is inserted into the first profile and the other end of which is inserted into a narrow cavity of the second profile. The insertion direction of the first profile and the connector is perpendicular to the insertion direction of the second profile and the connector. The connector has a first mating part and a second mating part. The first mating part and the first positioning part cooperate to connect the first profile and the connector. The second mating part and the second positioning part cooperate to connect the second profile and the connector. The connector is provided with a flow guide part. The gaps between the connector and the first profile and between the connector and the second profile are connected through the flow guide part. The glue injection part and the flow guide part are connected through the narrow cavity to allow adhesive to flow into the gaps between the connector and the first profile and between the connector and the second profile.

[0026] In the technical solution provided by this utility model, the first profile, as part of the connecting structure, provides the foundation for the connection. The second profile, as another part of the connecting structure, can cooperate with the first profile, and a stable connection between the first and second profiles is achieved through the provided connectors. The second profile has a narrow cavity inside, which can be used to accommodate the connectors and provide a flow channel for the adhesive. When it is necessary to splice the first and second profiles, one end of the connector is inserted into the first profile, and the first mating part and the first positioning part ensure that the connector is fixed to the first profile. Then, the narrow cavity of the second profile is inserted along the connector that is fixed to the first profile. After it is in place, the second mating part and the second positioning part ensure that the connector is fixed to the second profile. After the splicing is completed, adhesive is injected through the glue injection part of the second profile. At this time, the adhesive can flow through the narrow cavity of the second profile and the guide part of the connector to the gap between the connector and the first profile, as well as the gap between the connector and the second profile, thereby strengthening the splicing strength and waterproofing effect of the first and second profiles. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 A schematic diagram of an embodiment of the connection structure provided by this utility model;

[0029] Figure 2 A schematic diagram of the structure of an embodiment of the connector provided by this utility model;

[0030] Figure 3 A schematic diagram of a planar structure of an embodiment of the connection structure provided by this utility model;

[0031] Figure 4 A schematic diagram of the structure of an embodiment of the first profile provided by this utility model;

[0032] Figure 5 This is a structural schematic diagram of an embodiment of the second profile provided by this utility model.

[0033] Explanation of icon numbers:

[0034] 10. First profile; 11. First positioning part; 12. Indoor end; 121. Groove; 13. Connecting component; 14. Outdoor end; 141. Overlap part; 20. Second profile; 21. Second positioning part; 22. Glue injection part; 30. Connector; 31. First mating part; 32. Second mating part; 33. Fixed base; 331. Base body; 332. Correction slope; 333. Clamping part; 34. Glue injection port; 35. Drainage port; 36. Drainage groove.

[0035] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only one part of the embodiments of the present utility model, and not all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0039] For the connection structure of narrow cavities in doors and windows, the conventional method for splicing profiles with different widths and heights is to use a 90° splice. Because glass needs to be fitted after the profiles are spliced ​​on all four sides, the indoor and outdoor heights of the profiles differ. Therefore, one side of the splicing profile needs to be milled to allow for the splice. Currently, a connection method using connectors with screw slots is generally used. The connectors are first fixed inside the profile cavity that needs to be milled, and then milled together. The connectors are then secured with screws before milling. However, during the milling process, the above-mentioned connection structure is prone to loosening under stress, leading to gaps or failure, resulting in water leakage and safety hazards.

[0040] In view of this, this utility model embodiment provides a connection structure in which a connector with an injection groove is provided between the first profile and the second profile. Screws are used to connect and fix the connector to the first and second profiles to achieve the connection function. Adhesive is injected through the injection part of the second profile, and the adhesive passes through the guide part of the connector, thereby filling the joint between the connector and the inner cavity of the two splicing profiles, further providing reinforcement and waterproofing.

[0041] To better understand the above technical solution, the following detailed explanation is provided in conjunction with the accompanying drawings.

[0042] like Figure 1 , Figure 2 , Figure 3 As shown, this utility model provides a connection structure, including:

[0043] The first profile 10 is provided with a first positioning part 11;

[0044] The second profile 20 has a narrow cavity inside and is provided with an injection part 22 communicating with the narrow cavity; the second profile 20 is provided with a second positioning part 21; and

[0045] The connector 30 has one end inserted into the first profile 10 and the other end inserted into the narrow cavity of the second profile 20. The insertion direction of the first profile 10 and the connector 30 is perpendicular to the insertion direction of the second profile 20 and the connector 30. The connector 30 has a first mating part 31 and a second mating part 32. The first mating part 31 and the first positioning part 11 cooperate to realize the connection between the first profile 10 and the connector 30. The second mating part 32 and the second positioning part 21 cooperate to realize the connection between the second profile 20 and the connector 30. The connector 30 is provided with a guide part. The gap between the connector 30 and the first profile 10 and the gap between the connector 30 and the second profile 20 are connected through the guide part. The glue injection part 22 and the guide part are connected through the narrow cavity to allow the adhesive to flow into the gap between the connector 30 and the first profile 10 and the gap between the connector 30 and the second profile 20.

[0046] In the technical solution adopted in this embodiment, the first profile 10, as part of the connecting structure, can provide a foundation for the connection. The second profile 20, as another part of the connecting structure, can cooperate with the first profile 10, and a stable connection between the first profile 10 and the second profile 20 is achieved through the provided connector 30. The second profile 20 has a narrow cavity inside, which can be used to accommodate the connector 30 and provide a flow channel for the adhesive. When it is necessary to splice the first profile 10 and the second profile 20, one end of the connector 30 is inserted into the first profile 10. The first mating part 31 and the first positioning part 11 are used to ensure that the connector 30 is fixed to the first profile 10. Then, the narrow cavity of the second profile 20 is inserted into the connector 30 that is fixed to the first profile 10. After it is in place, the second mating part 32 and the second positioning part 21 are used to ensure that the connector 30 is fixed to the second profile 20. After the splicing is completed, adhesive is injected through the glue injection part 22 of the second profile 20. At this time, the adhesive can flow through the narrow cavity of the second profile 20 and the guide part of the connector 30 to the gap between the connector 30 and the first profile 10 and the gap between the connector 30 and the second profile 20, thereby strengthening the splicing strength and waterproofing effect of the first profile 10 and the second profile 20.

[0047] Specifically, the connection structure includes a first profile 10, a second profile 20, and a connector 30.

[0048] The first profile 10 can be made of aluminum alloy or stainless steel, possessing a certain load-bearing capacity and providing support. The first positioning part 11 can be a screw through hole, facilitating the passage of screws.

[0049] The second profile 20 is used to cooperate with the first profile 10 to form a structural frame, jointly providing structural support and ensuring the integrity and stability of the frame. A narrow cavity is formed inside the second profile 20 to accommodate the connector 30. It is understood that inserting the connector 30, which is fixed to the first profile 10, into the narrow cavity of the second profile 20 makes the splicing of the first profile 10 and the second profile 20 more stable and the splicing gaps tighter. In addition, adhesive can be injected into the narrow cavity through the provided glue injection part 22, which can be a hole formed on the surface of the second profile 20. The second positioning part 21 can be the aforementioned screw through-hole, facilitating screw passage.

[0050] The connector 30 is used to connect the first profile 10 and the second profile 20. By inserting the two ends of the connector 30 into the first profile 10 and the second profile 20 respectively, the first profile 10 and the second profile 20 can be assembled into a door or window frame. It can be understood that the first mating part 31 can be a threaded hole that can be threadedly connected to a screw, and the second mating part 32 can be a screw groove that can be threadedly connected to a screw. Additionally, a flow guide can be provided on the connector 30 via a flow channel. When the second profile 20 is assembled, the inlet of the flow channel connects to the injection section 22, and the outlet of the flow channel connects to the gaps between the connector 30 and the first profile 10, as well as the gaps between the connector 30 and the second profile 20. At this time, adhesive is injected into the injection section 22, allowing it to flow along the flow channel to the gaps between the connector 30 and the first profile 10, and between the connector 30 and the second profile 20, thereby enhancing the stability and sealing of the assembly. The flow channel can have one or multiple outlets, as long as the adhesive can flow to fill the gaps. Furthermore, during assembly, cross-sectional adhesive can be applied to the milled ends of the second profile 20 to enhance the sealing effect. After assembly, sealant can be injected at the joint between the first profile 10 and the second profile 20, as well as at the port of the first profile 10, to further enhance waterproof sealing and stability.

[0051] Furthermore, refer to Figure 2 , Figure 5 In one embodiment of the present invention, the second profile 20 is provided with at least two injection holes spaced apart, and the at least two injection holes form an injection portion 22;

[0052] The connector 30 includes two fixed bases 33 that are independently arranged. The fixed base 33 has a first support surface, a second support surface and a third support surface that are adjacent to each other. The first support surface is provided with an injection port 34 for injecting adhesive. The second support surface is provided with a drainage port 35. One end of the drainage port 35 is connected to the gap between the connector 30 and the first profile 10, and the other end is connected to the injection port 34 so that the adhesive flows from the injection port 34 through the drainage port 35 into the gap between the connector 30 and the first profile 10. The third support surface is provided with a fixed bottom hole that is connected to the injection port 34. The fixed bottom hole forms a first mating part 31. The injection port 34 and the drainage port 35 form a guide part.

[0053] The glue inlet 34 is connected to the glue inlet hole so that the adhesive can enter the glue inlet 34 through the glue inlet hole.

[0054] In this embodiment, the glue injection section 22 of the second profile 20 can have at least two glue injection holes, enabling the adhesive to be injected into the narrow cavity inside the second profile 20 and ensuring that the adhesive is evenly distributed. The connector 30 includes two fixed bases 33, which can provide more stable support, ensuring that the connector 30 reduces the risk of displacement and deformation under stress, thereby enhancing structural strength. In this embodiment, the adhesive is injected into the glue injection hole. The adhesive can smoothly enter the interior of the connector 30 through the glue injection port 34 and flow to the gap between the connector 30 and the profile through the drainage port 35, which can make the adhesive evenly distributed, reducing air bubbles and uneven filling. Moreover, the fixed bottom hole is connected to the glue injection port 34. When the adhesive flows in, the adhesive can make the screws or bolts connecting the first profile 10 and the connector 30 more secure, reducing the possibility of loosening.

[0055] Furthermore, refer to Figure 1 , Figure 2 In one embodiment of this utility model, the second support surface is further provided with a drainage groove 36 spaced apart from the drainage port 35. The drainage groove 36 is connected to the gap between the connector 30 and the second profile 20. The drainage groove 36 penetrates the first support surface and is connected to one of the glue injection holes, so that the adhesive flows from the glue injection hole through the drainage groove 36 into the gap between the connector 30 and the second profile 20.

[0056] In this embodiment, the flow channel 36 guides the adhesive from one of the injection holes to the gap between the second profile 20 and the connector 30, further optimizing the adhesive flow path and ensuring uniform distribution. It is understood that when the connector 30 is inserted into the narrow cavity of the second profile 20, the flow channel 36 and the inner wall of the narrow cavity form a guiding channel, thereby better filling the gap and improving the sealing of the connection.

[0057] Furthermore, refer to Figure 1 , Figure 2 In one embodiment of this utility model, the first positioning part 11 and the first mating part 31 are threaded holes, and the first positioning part 11 and the first mating part 31 are fixedly connected by screws; and / or,

[0058] The second positioning part 21 and the second mating part 32 are threaded holes, and the second positioning part 21 and the second mating part 32 are fixedly connected by screws.

[0059] In this embodiment, the connection between the first profile 10 and the connector 30, and between the second profile 20 and the connector 30, is strengthened by this arrangement. In this embodiment, one end of the connector 30 is inserted into the first profile 10 until the threaded hole of the first profile 10 corresponds to the threaded hole of the connector 30. A screw is then tightened through the threaded holes of the first profile 10 and the connector 30 to ensure that the connector 30 is securely fastened to the first profile 10, thus ensuring a more stable and secure connection between the connector 30 and the first profile 10 after tightening. Then, one end of the connector 30 is inserted into the narrow cavity of the second profile 20 until the threaded hole of the second profile 20 corresponds to the threaded hole of the connector 30. A screw is then tightened through the threaded holes of the second profile 20 and the connector 30, ensuring a more stable and secure connection between the connector 30 and the second profile 20 after tightening.

[0060] Furthermore, refer to Figure 3 , Figure 4 In one embodiment of the present invention, the first profile 10 includes an indoor end 12, a connecting component 13 connected to the indoor end 12, and an outdoor end 14 connected to the connecting component 13, arranged in sequence. The indoor end 12 is provided with a groove 121, and the outdoor end 14 is provided with an overlapping portion 141 on the side facing the indoor end 12.

[0061] Both fixed bases 33 include a base body 331, a correction slope 332 protruding from the base body 331, and a locking part 333 recessed in the base body 331.

[0062] In one of the fixed bases 33, the correction slope 332 engages with the groove 121, and the clamping part 333 of the other fixed base 33 engages with the overlapping part 141.

[0063] In this embodiment, the first profile 10 includes an indoor end 12, a connecting component 13, and an outdoor end 14. The fixed base 33 includes a base body 331, a correction slope 332, and a locking part 333. One of the locking part 333 and the overlapping part 141 can be a limiting groove, and the other is a limiting protrusion. In this embodiment, the locking part 333 of one fixed base 33 is inserted along the overlapping part 141 of the outdoor end 14 of the first profile 10, and then a screw is tightened through the threaded hole of the outdoor end 14 of the first profile 10 and the fixing bottom hole on the base body 331 until the locking part 333 tightly engages with the overlapping part 141 of the first profile 10, ensuring that the connection between the fixed base 33 and the first profile 10 is more stable and firm after tightening; The glue injection groove of a fixed base 33 faces the inner surface of the first profile 10, and the fixed base 33 is inserted into the groove 121 at the end of the first profile 10. Then, screws are tightened through the threaded holes on the inner surface of the first profile 10 and the fixing bottom holes on the fixed base 33. Under the action of the screw tightening force, the correction slope 332 and the groove 121 will self-correct to be vertical and tightly pressed together, reducing the occurrence of skew and loosening, and ensuring that the connector 30 and the groove 121 are kept in the vertical direction, stable, firm and not easy to deviate.

[0064] Furthermore, refer to Figure 3 In one embodiment of the present invention, the groove 121 has a groove bottom and a first protrusion and a second protrusion connected to the groove bottom. The first protrusion and the second protrusion are arranged opposite to each other and are inclined in a direction away from the groove bottom. The inclination angle of the first protrusion and the second protrusion is the same as the slope of the correction slope 332.

[0065] In this embodiment, the groove 121 includes a groove bottom, a first protrusion, and a second protrusion. The first and second protrusions are arranged opposite to each other and respectively cooperate with the correction slopes 332 on both sides of the fixed base 33. Moreover, the inclination angle of the two protrusions is the same as the slope of the correction slope 332, ensuring that the two can fit tightly. When the correction slope 332 of the fixed base 33 is inserted into the groove 121 of the first profile 10, since the inclination angle of the first and second protrusions is the same as the slope of the correction slopes 332 on both sides of the fixed base 33, the position of the first profile 10 can be automatically adjusted under the action of the screw tightening force, so that the correction slope 332 and the first and second protrusions self-correct until the fixed base 33 is perpendicular to the first profile 10 and tightly pressed. In addition, the first and second protrusions can also provide stable support for the fixed base 33, ensuring the reliability of the connection.

[0066] Furthermore, refer to Figure 3 In one embodiment of this utility model, the distance between the base body 331 and the bottom of the groove is equal to 0.2mm.

[0067] In the technical solution adopted in this embodiment, by setting it in this way, it can be ensured that there is enough space between the correction slope 332 and the protrusion of the groove 121 for automatic correction. Setting the interval to 0.2mm ensures both tight contact between the correction slope 332 and the protrusion and avoids installation difficulties or material deformation caused by excessive compression.

[0068] Furthermore, refer to Figure 2 , Figure 4 In one embodiment of the present invention, two first mating parts 31 are provided at intervals along the height direction of the connector 30, and each first mating part 31 is provided with a first positioning part 11.

[0069] In the technical solution adopted in this embodiment, by setting two first mating parts 31, a stable connection can be provided, ensuring that the connection between the connector 30 and the first profile 10 is not easy to loosen, and reducing the problem of excessive force at a single point, thereby improving the strength and durability of the connection.

[0070] Furthermore, in one embodiment of the present invention, the distance between the second positioning part 21 and the second mating part 32 is equal to 0.3 mm.

[0071] In the technical solution adopted in this embodiment, by setting the second mating part 32 to be 0.3mm lower than the second positioning part 21 of the fixed connector 30, the second profile 20 will be pulled and pressed against the first profile 10 under the action of the screw tightening force, ensuring that the splice seam is tight and waterproof.

[0072] This utility model also provides a door and window assembly, which includes the connection structures of the above embodiments. The specific structure of the connection structure is as described in the above embodiments. Since this door and window assembly adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0073] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A connection structure, characterized in that, include: A first profile, wherein the first profile is provided with a first positioning part; A second profile, the second profile having a narrow cavity inside and a glue injection part communicating with the narrow cavity, the second profile having a second positioning part; and A connector, one end of which is inserted into the first profile and the other end of which is inserted into the narrow cavity of the second profile, wherein the insertion direction of the first profile and the connector is perpendicular to the insertion direction of the second profile and the connector, the connector having a first mating part and a second mating part, the first mating part and the first positioning part cooperating to realize the connection between the first profile and the connector, the second mating part and the second positioning part cooperating to realize the connection between the second profile and the connector, the connector having a guide part, the gap between the connector and the first profile and the gap between the connector and the second profile being connected through the guide part, the glue injection part and the guide part being connected through the narrow cavity to allow adhesive to flow into the gap between the connector and the first profile and the gap between the connector and the second profile.

2. The connection structure as described in claim 1, characterized in that, The second profile is provided with at least two injection holes at intervals, and the at least two injection holes form the injection portion; The connector includes two independently arranged fixed bases. Each fixed base has a first support surface, a second support surface, and a third support surface that are adjacent to each other. The first support surface has an injection port for injecting the adhesive, and the second support surface has a drainage port. One end of the drainage port is connected to the gap between the connector and the first profile, and the other end is connected to the injection port so that the adhesive flows from the injection port through the drainage port into the gap between the connector and the first profile. The third support surface has a fixed bottom hole that is connected to the injection port. The fixed bottom hole forms the first mating part, and the injection port and the drainage port form the guide part. The glue inlet is connected to the glue injection hole so that the adhesive enters the glue inlet through the glue injection hole.

3. The connection structure as described in claim 2, characterized in that, The second support surface is also provided with a drainage groove spaced apart from the drainage port. The drainage groove is connected to the gap between the connector and the second profile. The drainage groove passes through the first support surface and is connected to one of the glue injection holes, so that the adhesive flows from the glue injection hole through the drainage groove into the gap between the connector and the second profile.

4. The connection structure as described in claim 1, characterized in that, The first positioning part and the first mating part are threaded holes, and the first positioning part and the first mating part are fixedly connected by screws; and / or, The second positioning part and the second mating part are threaded holes, and the second positioning part and the second mating part are fixedly connected by screws.

5. The connection structure as described in claim 2, characterized in that, The first profile includes an indoor end, a connecting component connected to the indoor end, and an outdoor end connected to the connecting component, arranged sequentially. The indoor end is provided with a groove, and the outdoor end is provided with an overlapping portion on the side facing the indoor end. Both of the fixed bases include a base body, a correction slope protruding from the base body, and a locking part recessed in the base body; In one of the fixed bases, the correction slope engages with the groove, and in the other fixed base, the clamping part engages with the overlapping part.

6. The connection structure as described in claim 5, characterized in that, The groove has a bottom and a first protrusion and a second protrusion connected to the bottom. The first protrusion and the second protrusion are arranged opposite to each other and are inclined away from each other in a direction away from the bottom of the groove. The inclination angle of the first protrusion and the second protrusion is the same as the slope of the correction slope.

7. The connection structure as described in claim 6, characterized in that, The distance between the base body and the bottom of the groove is 0.2 mm.

8. The connection structure as described in claim 1, characterized in that, Two first mating parts are provided at intervals along the height direction of the connector, and each first mating part is provided with a corresponding first positioning part.

9. The connection structure as described in claim 1, characterized in that, The distance between the second positioning part and the second mating part is equal to 0.3 mm.

10. A door and window assembly, characterized in that, Includes the connection structure as described in any one of claims 1-9.

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