Combined structure and connecting piece of small-cavity broken bridge aluminum alloy profile

Abstract

The utility model provides a combined structure of a small-cavity broken bridge aluminum alloy profile and a connecting piece, and is applied to the technical field of doors and windows. According to the combined structure of the small-cavity broken bridge aluminum alloy section and the connecting piece, a mullion is provided with a mounting part, and a first cavity and a second cavity are formed in the two sides of the mounting part in the Z-axis direction; the connecting piece at least comprises a first connecting body and a second connecting body which are arranged in the Z-axis direction in a spaced mode and extend in the X-axis direction, and the first connecting body and the second connecting body are used for being connected with the first cavity and the second cavity respectively. And the two connecting parts are arranged at intervals in the Z-axis direction, so that the contact area of the connecting piece and the mullion is increased, and the connecting structure of the mullion and the connecting piece is more stable. Therefore, the combined structure of the small-cavity broken bridge aluminum alloy sections has the advantages of being simple in structure and stable in connection.

Description

Technical Field

[0001] This application relates to the technical field of doors and windows, and more specifically, to a combined structure and a connector of a small-chamber broken-bridge aluminum alloy profile. Background Art

[0002] Aluminum alloy doors and windows are an important part of customized furniture. To meet the current popular modern minimalist decoration style in the market, the profile cavity structure of aluminum alloy door and window products needs to be made more compact and small. Such a structure is beneficial to increasing the light transmittance of the window and making the appearance line more simple. However, due to the too small profile structure of the small-chamber profile, when making the profile T-connection (that is, the connection where the mullion is perpendicular to the frame), the existing solutions usually use connectors to fix on the outdoor side. For example, nail installation connection is used on the outdoor side (as shown in the attachment Figure 2 ), which has problems such as unstable structural connection, insufficient strength, and complex processing and installation processes.

[0003] In view of the above problems, the existing technology urgently needs to be improved. Summary of the Utility Model

[0004] The purpose of this application is to provide a combined structure and a connector of a small-chamber broken-bridge aluminum alloy profile. By setting a connector with a first connection body and a second connection body between the mullion and the frame, the connection structure between the mullion and the frame is made more stable.

[0005] In a first aspect, this application provides a combined structure of a small-chamber broken-bridge aluminum alloy profile, and the technical solution is as follows:

[0006] A combined structure of a small-chamber broken-bridge aluminum alloy profile includes a mullion, a frame, and a connector for connecting the mullion and the frame. The connector is connected to the frame. The mullion is provided with an installation part extending along the X-axis direction for installing a glass window. The mullion is provided with two first cavities and second cavities that extend through along the X-axis direction at intervals along the Z-axis direction. The first cavity and the second cavity are distributed on both sides of the installation part along the Z-axis direction;

[0007] The connector at least includes a first connection body and a second connection body that are arranged at intervals along the Z-axis direction and extend along the X-axis direction. The first connection body and the second connection body are respectively used for connecting with the first cavity and the second cavity.

[0008] A combined structure of a small cavity broken bridge aluminum alloy profile provided by the present application includes a middle mullion, a frame, and a connecting member for connecting the middle mullion and the frame. Connecting the middle mullion and the frame through the connecting member can make the connection more stable. The connecting member is connected to the frame. The middle mullion is provided with an installation part for installing a glass window extending along the X-axis direction, and two first cavities and second cavities penetrating along the X-axis direction are also arranged at intervals along the Z-axis direction. The first cavity and the second cavity are distributed on both sides of the installation part along the Z-axis direction, which can avoid the installation position of the glass window; the connecting member at least includes a first connecting body and a second connecting body arranged at intervals along the Z-axis direction and extending along the X-axis direction. The first connecting body and the second connecting body are respectively used for connecting with the first cavity and the second cavity. The structure of this connecting member is simple, and there are at least two connecting parts with the middle mullion, and these two connecting parts are arranged at intervals along the Z-axis direction, increasing the contact area between the connecting member and the middle mullion, and making the connection structure between the middle mullion and the connecting member more stable. Therefore, the combined structure of the small cavity broken bridge aluminum alloy profile has the beneficial effects of simple structure and stable connection.

[0009] Further, the connecting member includes a thickened connecting back plate extending along the Z-axis direction and connecting the first connecting body and the second connecting body at both ends respectively; a first glue guiding groove is arranged on one side of the first connecting body away from the second connecting body, and the first glue guiding groove extends along the Y-axis direction.

[0010] A combined structure of a small cavity broken bridge aluminum alloy profile provided by the present application, the connecting member includes a thickened connecting back plate extending along the Z-axis direction and connecting the first connecting body and the second connecting body at both ends respectively, ensuring that the first connecting body and the second connecting body can be connected to the frame through the thickened connecting back plate, increasing the contact area between the connecting member and the frame, and improving the connection stability; a first glue guiding groove is arranged on one side of the first connecting body away from the second connecting body, and the first glue guiding groove extends along the Y-axis direction for accommodating glue to fix the connected components.

[0011] Further, on one side of the second connecting body away from the first connecting body, there are a first claw and a second claw connected to the C-shaped notch of the frame. The first claw and the second claw are arranged at intervals along the X-axis and form a second glue guiding groove, and the second glue guiding groove extends along the Y-axis direction.

[0012] A combined structure of a small cavity broken bridge aluminum alloy profile provided by the present application, on one side of the second connecting body away from the first connecting body, there are a first claw and a second claw connected to the C-shaped notch. The first claw and the second claw are engaged with the opening of the C-shaped notch, further improving the connection stability between the connecting member and the frame. The first claw and the second claw are arranged at intervals along the X-axis, and a second glue guiding groove can be formed. The second glue guiding groove is used for accommodating glue to make the connection between the first claw, the second claw and the C-shaped notch of the frame more stable.

[0013] Further, a first glue injection cavity and a second glue injection cavity are respectively formed in the first connection body and the second connection body along the Y-axis direction. A first glue injection hole and a second glue injection hole are respectively formed in the first cavity and the second cavity. The first glue injection hole communicates with the first glue injection cavity, and the second glue injection hole communicates with the second glue injection cavity.

[0014] In the combined structure of a small-cavity broken-bridge aluminum alloy profile provided by the present application, a first glue injection cavity and a second glue injection cavity are respectively formed in the first connection body and the second connection body along the Y-axis direction. The first glue injection cavity and the second glue injection cavity are used for injecting glue to make the connection between the connecting piece and the mullion more stable. After the first connection body and the second connection body are inserted into the first cavity and the second cavity, glue is injected through the first glue injection hole on the first cavity and the second glue injection hole on the second cavity respectively, thereby making the connection between the connecting piece and the mullion more stable.

[0015] Further, a first pin cavity and a second pin cavity are respectively formed in the first connection body and the second connection body along the Y-axis direction. The first pin cavity and the second pin cavity are respectively arranged on one side close to the mullion of the first glue injection cavity and the second glue injection cavity in the X-axis direction.

[0016] Further, a first pin hole and a second pin hole are respectively arranged on the first cavity and the second cavity. The first pin hole and the second pin hole communicate with the first pin cavity and the second pin cavity respectively, and the width dimensions of the first pin cavity and the second pin cavity in the X-axis direction are equal to the diameters of the first pin hole and the second pin hole.

[0017] Further, through first screw holes are respectively arranged in the first connection body and the second connection body along the X-axis direction. Second screw holes extending along the X-axis direction are arranged at intervals in the Z-axis direction of the frame. The diameters of the first screw holes and the second screw holes are equal.

[0018] Further, anti-disengagement clamping grooves are respectively arranged on both sides of the first connection body and the second connection body in the Z-axis direction.

[0019] Further, the anti-disengagement clamping groove is in the shape of an inverted hook.

[0020] In a second aspect, the present application provides a connecting piece for a small-cavity broken-bridge aluminum alloy profile, which is applied to the combined structure of a small-cavity broken-bridge aluminum alloy profile described in any one of the above. The connecting piece at least includes a first connection body and a second connection body which are arranged at intervals along the Z-axis and extend in the X-axis direction. The first connection body and the second connection body are respectively used for connecting with a first cavity and a second cavity on the mullion.

[0021] Beneficial effects: A combined structure and connecting member of a small-cavity broken-bridge aluminum alloy profile proposed in this application includes a middle mullion, a frame, and a connecting member for connecting the middle mullion and the frame. Connecting the middle mullion and the frame through the connecting member can make the connection more stable. The connecting member is connected to the frame, and the middle mullion is provided with an installation part for installing a glass window extending in the X-axis direction, and two first cavities and second cavities penetrating in the X-axis direction are also arranged at intervals in the Z-axis direction. The first cavity and the second cavity are distributed on both sides of the installation part in the Z-axis direction, which can avoid the installation position of the glass window; the connecting member at least includes a first connecting body and a second connecting body arranged at intervals in the Z-axis direction and extending in the X-axis direction. The first connecting body and the second connecting body are respectively used for connecting with the first cavity and the second cavity. This connecting member has a simple structure, and there are at least two connecting parts with the middle mullion, and these two connecting parts are arranged at intervals in the Z-axis direction, increasing the contact area between the connecting member and the middle mullion and making the connection structure between the middle mullion and the connecting member more stable. Therefore, the combined structure of this small-cavity broken-bridge aluminum alloy profile has the beneficial effects of simple structure and stable connection. Description of the drawings

[0022] Figure 1 It is an exploded view of a combined structure of a small-cavity broken-bridge aluminum alloy profile provided by this application.

[0023] Figure 2 It is a structure in the prior art where the middle mullion and the frame are connected by screws.

[0024] Figure 3 It is a structural diagram of a connecting member of a small-cavity broken-bridge aluminum alloy profile provided by this application.

[0025] Figure 4 It is a top view of the middle mullion provided by this application.

[0026] Figure 5 It is an exploded view of a self-tapping screw passing through the cross rail and the middle mullion provided by this application.

[0027] In the figure: 1, middle mullion; 2, connecting member; 3, frame; 11, first cavity; 12, second cavity; 13, dowel pin; 14, nail channel; 15, inner middle mullion profile; 16, outer middle mullion profile; 17, installation part; 111, first glue injection hole; 112, first dowel pin hole; 121, second glue injection hole; 122, second dowel pin hole; 21, first connecting body; 22, second connecting body; 23, thickened connection back plate; 24, first screw hole; 25, countersunk head screw; 26, anti-detachment slot; 211, first glue injection cavity; 212, first dowel pin cavity; 213, first glue guiding groove; 221, second glue injection cavity; 222, second dowel pin cavity; 223, first clamping jaw; 224, second clamping jaw; 225, second glue guiding groove; 31, C-shaped notch; 32, cross rail; 33, self-tapping screw. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Components of the embodiments of the present application usually described and marked in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but only represents the selected embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] Currently, in the combination structure of doors and windows, the T-connection between the mullion and the frame has problems of unstable connection and complex structure. To solve this problem, the present application provides a combination structure and a connector for a small cavity broken bridge aluminum alloy profile.

[0031] Please refer to Figures 1 to 5 , in a first aspect, a combination structure of a small cavity broken bridge aluminum alloy profile includes a mullion 1, a frame 3, and a connector 2 for connecting the mullion 1 and the frame 3. The connector 2 is connected to the frame 3. The mullion 1 is provided with a mounting portion 17 extending along the X-axis direction for mounting a glass window.

[0032] Two first cavities 11 and second cavities 12 that penetrate along the X-axis direction are arranged at intervals along the Z-axis direction on the mullion 1. The first cavity 11 and the second cavity 12 are distributed on both sides of the mounting portion 17 along the Z-axis direction.

[0033] The connector 2 at least includes a first connection body 21 and a second connection body 22 that are arranged at intervals along the Z-axis direction and extend along the X-axis direction. The first connection body 21 and the second connection body 22 are respectively used for connecting with the first cavity 11 and the second cavity 12.

[0034] Among them, the combination structure includes a mullion 1, a frame 3, and a connector 2 connecting the mullion 1 and the frame 3. The mullion 1 extends along the X-axis direction, the frame 3 extends along the Y-axis direction, and the mullion 1 is vertically connected to the frame 3. In the prior art, please refer to Figure 2, the mullion 1 and the frame 3 are connected by screws passing through both of them. However, this connection method is not stable, the connection strength is insufficient, and in order to drill the process holes for the screws on the mullion 1 and the frame 3, the complexity of manufacturing the aluminum profiles for doors and windows will increase. Therefore, to solve this problem, a connecting piece 2 can be provided between the mullion 1 and the frame 3, and the mullion 1 and the frame 3 are connected through the connecting piece 2, which simplifies the connection structure and reduces the complexity of manufacturing the aluminum profiles for doors and windows.

[0035] The existing connection structure usually only includes a connection body extending in the X-axis direction. In actual application, the mullion 1 includes an outer mullion profile 16 on the side close to the outdoor, and an inner mullion profile 15 on the side close to the indoor. An installation part 17 for installing glass windows and other door and window components are arranged between the outer mullion profile 16 and the inner mullion profile 15. If only one connection body is provided to connect the mullion 1 and the frame 3, it will still cause unstable connection on one side of either the outer mullion profile 16 or the inner mullion profile 15.

[0036] Therefore, in this application, a first cavity 11 and a second cavity 12 extending in the X-axis direction are provided on the mullion 1, and the first cavity 11 and the second cavity 12 are spaced along the Z-axis on both sides of the installation part 17. In order to avoid the first cavity 11 and the second cavity 12 interfering with other components on the door and window, the first cavity 11 and the second cavity 12 can be respectively arranged in the inner mullion profile 15 and the outer mullion profile 16 located on both sides of the installation part 17.

[0037] Among them, the connecting piece 2 at least includes a first connecting body 21 and a second connecting body 22 which are spaced along the Z-axis direction and extend in the X-axis direction. Since the first cavity 11 and the second cavity 12 communicate with each other in the X-axis direction, the first connecting body 21 and the second connecting body 22 can be inserted into the first cavity 11 and the second cavity 12 in the X-axis direction and fixedly connected to the mullion 1. Through the first connecting body 21 and the second connecting body 22 spaced along the Z-axis direction, there are at least two contact parts between the connecting piece 2 and the mullion 1, which can connect the mullion 1 and the frame 3 more stably.

[0038] Furthermore, the connecting piece 2 includes a thickened connecting back plate 23 extending in the Z-axis direction and connecting the first connecting body 21 and the second connecting body 22 at both ends respectively; a first glue guiding groove 213 is arranged on the side of the first connecting body 21 away from the second connecting body 22, and the first glue guiding groove 213 extends in the Y-axis direction.

[0039] Among them, please refer to Figure 3, the connecting member 2 includes a thickened connecting back plate 23 extending in the Z-axis direction and connected to the first connecting body 21 and the second connecting body 22 at both ends respectively. Among them, the thickened connecting back plate 23 is arranged at one end of the first connecting body 21 and the second connecting body 22 away from the mullion 1, and forms an "n"-shaped groove with the first connecting body 21 and the second connecting body 22. This "n"-shaped groove is used for snap connection with the frame 3, so as to improve the connection stability between the connecting member 2 and the frame 3. A first glue guide groove 213 is arranged on one side of the first connecting body 21 away from the second connecting body 22. The first glue guide groove 213 extends in the Y-axis direction. After the first connecting body 21 is inserted into the first cavity 11, the nail channel 14 in the first cavity 11 communicates with the first glue guide groove 213. After glue is injected into the first glue guide groove 213, it is used to fix the screw in the nail channel 14, so that the connection between the connecting member 2 and the mullion 1 is more stable.

[0040] Furthermore, on one side of the second connecting body 22 away from the first connecting body 21, there are a first claw 223 and a second claw 224 connected to the C-shaped notch 31 of the frame 3. The first claw 223 and the second claw 224 are arranged at intervals along the X-axis and form a second glue guide groove 225. The second glue guide groove 225 extends in the Y-axis direction.

[0041] Among them, on one side of the second connecting body 22 away from the first connecting body 21, there are a first claw 223 and a second claw 224 connected to the C-shaped notch 31 of the frame 3. The first claw 223 and the second claw 224 are in an inverted hook shape, and the hook openings face the same side. During actual connection, the first claw 223 is connected to the inner wall of the C-shaped notch 31, and the second claw 224 is connected to the outer wall of the C-shaped notch. In order to make the connection between the first claw 223, the second claw 224 and the C-shaped notch 31 more stable, the first claw 223 and the second claw 224 are arranged at intervals along the X-axis and form a second glue guide groove 225. The second glue guide groove 225 extends in the Y-axis direction. The second glue guide groove 225 is used for injecting glue to stably fix the first claw 223, the second claw 224 and the C-shaped notch 31.

[0042] Furthermore, the first connecting body 21 and the second connecting body 22 are respectively provided with a first glue injection cavity 211 and a second glue injection cavity 221 along the Y-axis direction. The first cavity 11 and the second cavity 12 are respectively provided with a first glue injection hole 111 and a second glue injection hole 121; the first glue injection hole 111 communicates with the first glue injection cavity 211, and the second glue injection hole 121 communicates with the second glue injection cavity 221.

[0043] Among them, the first connecting body 21 and the second connecting body 22 are respectively provided with a first glue injection cavity 211 and a second glue injection cavity 221 along the Y-axis direction. After the first connecting body 21 and the second connecting body 22 are inserted into the first cavity 11 and the second cavity 12, glue is injected to better fix the connecting member 2 to the mullion 1. Since the first connecting body 21 and the second connecting body 22 are connected inside the mullion 1, for the convenience of glue injection, a first glue injection hole 111 and a second glue injection hole 121 communicating with the first glue injection cavity 211 and the second glue injection cavity 221 can be opened on the first cavity 11 and the second cavity 12, further enabling the connecting member 2 to be better connected to the mullion 1.

[0044] Furthermore, the first connecting body 21 and the second connecting body 22 are respectively provided with a first pin cavity 212 and a second pin cavity 222 along the Y-axis direction. The first pin cavity 212 and the second pin cavity 222 are respectively arranged on one side close to the mullion 1 of the first glue injection cavity 211 and the second glue injection cavity 221 in the X-axis direction.

[0045] Among them, the first connecting body 21 and the second connecting body 22 are respectively provided with a first pin cavity 212 and a second pin cavity 222 along the Y-axis direction. The pin 13 passes through the first cavity 11 and the first pin cavity 212 along the Y-axis direction, and the connecting member 2 can be fixed to the mullion 1. Similarly, the pin 13 passes through the second cavity 12 and the second pin cavity 222 along the Y-axis direction, and the connecting member 2 can be further fixed to the mullion 1. The first pin cavity 212 and the second pin cavity 222 are respectively arranged on one side close to the mullion 1 of the first glue injection cavity 211 and the second glue injection cavity 221, so that the ends of the first connecting body 21 and the second connecting body 22 extending in the X-axis direction are fixedly connected to the mullion 1 through the pin 13 in the Y-axis direction, thereby further improving the connection stability between the connecting member 2 and the mullion 1.

[0046] Furthermore, a first pin hole 112 and a second pin hole 122 are respectively arranged on the first cavity 11 and the second cavity 12. The first pin hole 112 and the second pin hole 122 communicate with the first pin cavity 212 and the second pin cavity 222 respectively, and the width dimensions of the first pin cavity 212 and the second pin cavity 222 in the X-axis direction are equal to the diameters of the first pin hole 112 and the second pin hole 122.

[0047] Among them, a first pin hole 112 and a second pin hole 122 are respectively arranged on the first cavity 11 and the second cavity 12, and the first pin hole 112 and the second pin hole 122 are respectively communicated with a first pin cavity 212 and a second pin cavity 222; the width dimensions of the first pin cavity 212 and the second pin cavity 222 in the X-axis direction are equal to the diameters of the first pin hole 112 and the second pin hole 122, so that after the pin 13 passes through the first pin hole 112 and the second pin hole 122, it can just be engaged with the first pin cavity 212 and the second pin cavity 222, fixing the connecting piece 2 and the mullion 1 and improving the connection stability between the connecting piece 2 and the mullion 1.

[0048] Furthermore, through first screw holes 24 are respectively arranged on the first connecting body 21 and the second connecting body 22 along the X-axis direction, and second screw holes extending along the X-axis direction are arranged at intervals of the frame 3 in the Z-axis direction, and the diameters of the first screw holes 24 and the second screw holes are equal.

[0049] Among them, two first screw holes 24 and second screw holes are respectively arranged, and the taper head screw 25 is used to pass through the first screw hole 24 and the second screw hole, so that the connecting piece 2 and the frame 3 can be fixed together, improving the connection stability between the connecting piece 2 and the frame 3.

[0050] In addition, the width dimension of the mullion 1 extending along the Z-axis direction is relatively long. When the extending end extends to the position of the horizontal rail 32 of the frame 3, a through hole extending along the X-axis direction can be opened at a specified position of the horizontal rail 32 of the frame 3, and the self-tapping screw 33 is used to pass through the horizontal rail 32 of the frame 3 and the mullion 1, further improving the connection stability between the frame 3 and the mullion 1.

[0051] Furthermore, anti-detachment card slots 26 are respectively arranged on both sides of the first connecting body 21 and the second connecting body 22 in the Z-axis direction.

[0052] Among them, anti-detachment card slots 26 are respectively arranged on both sides of the first connecting body 21 and the second connecting body 22 in the Z-axis direction. The anti-detachment card slots 26 are used to increase the friction between the first connecting body 21, the second connecting body 22 and the first cavity 11 and the second cavity 12, improving the connection stability.

[0053] Furthermore, the anti-detachment card slot 26 is in an inverted hook shape.

[0054] Among them, the anti-detachment card slot 26 includes inverted hook structures arranged in parallel along the X-axis direction, which are used to prevent the first connecting body 21 and the second connecting body 22 from falling off from the first cavity 11 and the second cavity 12.

[0055] Second aspect, a connector 2 for a small cavity broken bridge aluminum alloy profile is applied to the combined structure of a small cavity broken bridge aluminum alloy profile according to any one of the above. The connector 2 at least includes a first connection body 21 and a second connection body 22 that are arranged at intervals along the Z axis and extend in the X axis direction. The first connection body 21 and the second connection body 22 are respectively used to connect to the first cavity 11 and the second cavity 12 on the middle stile 1.

[0056] Among them, the connector 2 connects the first cavity 11 and the second cavity 12 on the middle stile 1 through the spaced-apart first connection body 21 and second connection body 22. The structure is simple, and the connection area between the connector 2 and the middle stile 1 is increased, improving the connection stability between the connector 2 and the middle stile 1, thereby improving the connection stability between the middle stile 1 and the frame 3.

[0057] The above are only embodiments of the present application and are not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A combined structure of a small cavity broken bridge aluminum alloy profile, comprising a middle mullion (1), a frame (3), and a connecting member (2) for connecting the middle mullion (1) and the frame (3). The connecting member (2) is connected to the frame (3). The middle mullion (1) is provided with an installation portion (17) extending along the X-axis direction for installing a glass window. It is characterized in that, Two first cavities (11) and second cavities (12) that penetrate along the X-axis direction are arranged at intervals along the Z-axis direction in the middle mullion (1). The first cavity (11) and the second cavity (12) are distributed on both sides of the installation portion (17) along the Z-axis direction; The connecting member (2) at least includes a first connecting body (21) and a second connecting body (22) that are arranged at intervals along the Z-axis direction and extend along the X-axis direction. The first connecting body (21) and the second connecting body (22) are respectively used for connecting with the first cavity (11) and the second cavity (12); Anti-detachment clamping grooves (26) are respectively arranged on both sides of the first connecting body (21) and the second connecting body (22) in the Z-axis direction; The anti-detachment clamping groove (26) is in the shape of an inverted hook.

2. The combined structure of a small cavity broken bridge aluminum alloy profile according to claim 1, characterized in that, The connecting member (2) includes a thickened connecting back plate (23) that extends along the Z-axis direction and whose two ends are respectively connected to the first connecting body (21) and the second connecting body (22). A first glue guiding groove (213) is arranged on one side of the first connecting body (21) away from the second connecting body (22). The first glue guiding groove (213) extends along the Y-axis direction.

3. The combined structure of a small cavity broken bridge aluminum alloy profile according to claim 2, characterized in that, On one side of the second connecting body (22) away from the first connecting body (21), a first claw (223) and a second claw (224) for connecting with the C-shaped notch (31) of the frame (3) are arranged. The first claw (223) and the second claw (224) are arranged at intervals along the X-axis direction and form a second glue guiding groove (225). The second glue guiding groove (225) extends along the Y-axis direction.

4. The combined structure of a small cavity broken bridge aluminum alloy profile according to claim 1, characterized in that, The first connecting body (21) and the second connecting body (22) are respectively provided with a first glue injection cavity (211) and a second glue injection cavity (221) along the Y-axis direction. The first cavity (11) and the second cavity (12) are respectively provided with a first glue injection hole (111) and a second glue injection hole (121). The first glue injection hole (111) is communicated with the first glue injection cavity (211), and the second glue injection hole (121) is communicated with the second glue injection cavity (221).

5. The combined structure of a small cavity broken bridge aluminum alloy profile according to claim 4, characterized in that, The first connecting body (21) and the second connecting body (22) are also respectively provided with a first pin cavity (212) and a second pin cavity (222) along the Y-axis direction. The first pin cavity (212) and the second pin cavity (222) are respectively arranged on one side of the first glue injection cavity (211) and the second glue injection cavity (221) close to the middle mullion (1) in the X-axis direction.

6. The combined structure of a small cavity broken bridge aluminum alloy profile according to claim 5, characterized in that, The first cavity (11) and the second cavity (12) are respectively provided with a first pin hole (112) and a second pin hole (122). The first pin hole (112) and the second pin hole (122) are respectively communicated with the first pin cavity (212) and the second pin cavity (222), and the width dimensions of the first pin cavity (212) and the second pin cavity (222) in the X-axis direction are equal to the diameters of the first pin hole (112) and the second pin hole (122).

7. The combined structure of a small cavity broken bridge aluminum alloy profile according to claim 1, characterized in that The first connecting body (21) and the second connecting body (22) are respectively provided with through first screw holes (24) along the X-axis direction. The frame (3) is provided with second screw holes extending along the X-axis direction at intervals in the Z-axis direction. The diameters of the first screw holes (24) and the second screw holes are equal.

8. A connecting piece for a small cavity broken bridge aluminum alloy profile, characterized in that, Applied to the combined structure of a small cavity broken bridge aluminum alloy profile according to any one of the above claims 1-7, the connecting member (2) at least includes a first connecting body (21) and a second connecting body (22) which are arranged at intervals along the Z-axis and extend in the X-axis direction. The first connecting body (21) and the second connecting body (22) are respectively used for connecting with the first cavity (11) and the second cavity (12) on the middle mullion (1).

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