Corner connector for sectional material splicing
By designing angle brackets for profile splicing with interference fit surfaces and beveled structures, the problem of slight misalignment after profile installation was solved, achieving flush and stable bonding of profile ends, and improving the aesthetics and connection stability of doors and windows.
Patent Information
- Application Number
- CN202422095173.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-08-27
AI Technical Summary
Existing corner brackets can easily cause slight misalignment of the profile bonding surfaces after installation, affecting the aesthetics and the quality of door and window products.
An angle bracket for splicing profiles was designed, which adopts an interference fit surface and a bevel structure. The interference fit surface is interference fit with the inner wall of the profile, and the bevel forms a gap with the inner wall of the profile. Combined with the glue injection groove and through hole, stable bonding and fixing are achieved.
Ensure that the outer surface of the profile ends is flush, reduce the impact of unevenness deep inside the profile on the interference fit, enhance the stable connection between the corner bracket and the profile, and maintain the flatness and aesthetics of the outer surface of the splice seam.
Smart Images
Figure CN223661670U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of corner bracket technology, and in particular to a corner bracket for splicing profiles. Background Technology
[0002] Corner brackets are commonly used hardware in construction, typically applied to doors, windows, curtain walls, furniture, etc. A standard corner bracket consists of two bracket arms, which are usually sheet-shaped, and the two bracket arms facilitate the fixing of profiles.
[0003] Currently, most corner brackets on the market are L-shaped, with horizontal and vertical corner bracket arms integrally formed. This type of corner bracket has the following shortcomings in application: When the corner bracket is applied to the corner of a door or window, the horizontal corner bracket arm is inserted into the horizontal profile of the door or window, and the vertical corner bracket arm is inserted into the vertical profile of the door or window. Since the entire side of the horizontal and vertical corner bracket arms is an interference fit with the horizontal and vertical profiles of the door or window, the inner wall of the door or window profile that contacts the entire side of the corner bracket arm inevitably has some unevenness. As a result, after the corner bracket is installed, the contact surface between the horizontal and vertical profiles of the door or window is prone to slight misalignment, resulting in an uneven surface, poor aesthetics, and a reduction in the grade of the door or window product. Utility Model Content
[0004] In view of this, the purpose of this utility model is to provide a corner bracket for splicing profiles, so as to solve the technical problem that slight misalignment of the profile bonding surface is easy to occur after the corner brackets of the prior art are installed.
[0005] This utility model provides a corner bracket for splicing profiles, including a first corner bracket arm and a second corner bracket arm. The first corner bracket arm is used to insert into a first profile, and the second corner bracket arm is used to insert into a second profile. Both the first and second corner bracket arms have an interference fit surface and a bevel on the same side. The interference fit surface is located on both sides of the splice seam between the first and second profiles. The bevel is located between the interference fit surface and the end of the corner bracket away from the splice seam. The bevel is lower than the interference fit surface. The interference fit surface is used to mate with the inner wall of the profile, and there is a gap between the bevel and the inner wall of the profile.
[0006] Optionally, the interference fit surface is strip-shaped and its length extends along the length direction of the splice seam.
[0007] Optionally, the width of the interference fit surface is less than 1 / 10 of the shorter of the first corner arm and the second corner arm, and greater than 5 mm.
[0008] Optionally, the inclined surface becomes lower as it moves further away from the interference fit surface along the length direction of the corner bracket.
[0009] Optionally, the highest point of the inclined surface is in contact with the interference fit surface.
[0010] Optionally, a first groove is provided on both sides of the inner corner where the first corner arm and the second corner arm are connected. The two first grooves form a protruding bump at the inner corner. The bump has a horizontal surface and a vertical surface. The horizontal surface is used to support the bottom of the vertical profile, and the vertical surface is used to fit against the inner wall of the profile. The first groove is recessed directly below the horizontal surface.
[0011] Optionally, a concave arc-shaped groove is provided at the outer corner where the first corner arm and the second corner arm are connected, and the gap between the arc surface and the inner wall of the profile communicates with the arc-shaped groove.
[0012] Optionally, a glue injection groove is provided at the connection between the first corner bracket arm and the second corner bracket arm, the interference fit surface is located on both sides of the glue injection groove, and the glue injection groove is connected to the arc-shaped groove.
[0013] Optionally, the first corner bracket arm and the second corner bracket arm are provided with through holes that penetrate the inclined surface and the opposite side surface.
[0014] Optionally, a second groove is provided on both the inner and outer surfaces of the corner bracket, and the second groove extends through the inclined surface.
[0015] The technical solution of this utility model has the following advantages:
[0016] 1. After the two arms of the corner bracket are inserted into the two profiles respectively, the two corner bracket arms are interference fit with the inner walls of the two profiles through their respective interference fit surfaces. The corner bracket forcibly holds the ends of the two profiles through the two interference fit surfaces, so that the outer surfaces of the ends of the two profiles are flush with both sides of the joint.
[0017] 2. The beveled design on the side of the corner bracket not only allows for unobstructed insertion into the profile, but also creates a large adhesive layer between the bevel and the inner wall of the profile after glue application, which is beneficial for the stable bonding and fixation of the corner bracket to the inner wall of the profile. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a front view of the corner bracket in an embodiment of this utility model;
[0020] Figure 2 This is a front view of the corner bracket installed inside the profile in an embodiment of this utility model;
[0021] Figure 3 yes Figure 2 A schematic diagram of the cross-section of a medium-sized profile;
[0022] Figure 4 yes Figure 3 Enlarged view of section A.
[0023] In the figure: First corner bracket arm 1, second corner bracket arm 2, interference fit surface 3, inclined surface 4, first groove 5, protrusion 6, horizontal surface 61, vertical surface 62, arc groove 7, glue injection groove 8, through hole 9, second groove 10, profile 11. Detailed Implementation
[0024] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.
[0025] Unless otherwise explicitly specified and limited, the terms "setup," "installation," and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms based on the specific circumstances.
[0026] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0027] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.
[0028] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.
[0029] Please refer to Figure 1This utility model provides a corner bracket for splicing profiles. The corner bracket is integrally formed by a first corner bracket arm 1 and a second corner bracket arm 2 at an angle. The angle is not limited to 90°, but can also be an obtuse angle or an acute angle. The angle is the same as the angle of the two profiles to be spliced. When the corner bracket is used to splice two adjacent profiles at the four corners of a door or window, the angle is 90°.
[0030] Please refer to Figures 1 to 3 At the junction of the first corner bracket arm 1 and the second corner bracket arm 2, there are inner and outer angles. The inner angle is formed by the upper surface of the first corner bracket arm 1 and the left side of the second corner bracket arm 2, while the outer angle is formed by the lower surface of the first corner bracket arm 1 and the right side of the second corner bracket arm 2. The tip of the outer angle is machined away to form a concave arc-shaped groove 7. The arc-shaped groove 7 is symmetrical about the dividing line between the first corner bracket arm 1 and the second corner bracket arm 2 (i.e., the dotted line in the figure), which is parallel to the seam of the two profiles 11. The functions of the arc-shaped groove 7 are twofold: first, to prevent the tip of the outer corner bracket from abutting against the inner wall of the profile, thus avoiding unevenness in the profile splicing; and second, to be used for glue injection. Small holes are pre-drilled on the profile to align with the arc-shaped groove 7. A glue injection needle is inserted into the profile through the small holes to inject glue into the arc-shaped groove 7. The corner bracket is provided with a strip-shaped glue injection groove 8 at the aforementioned dividing line. The length of the glue injection groove 8 extends along the dividing line, with the upper end reaching the upper surface of the corner bracket and the lower end reaching into the arc-shaped groove 7.
[0031] Please refer to Figure 1 On the upper surface of the corner bracket, first grooves 5 are symmetrically arranged on both sides of the inner corner of the corner bracket. A protruding bump 6 is thus formed between the two first grooves 5. When the corner bracket arm is inserted into the vertical profile, the bump 6 supports the bottom end of the vertical profile (see...). Figure 3 The protrusion 6 has an upward-facing horizontal surface 61 and a left-facing vertical surface 62. The horizontal surface 61 and the vertical surface 62 are symmetrical about the aforementioned dividing line, and the angle between the horizontal surface 61 and the vertical surface 62 is the aforementioned interior angle.
[0032] Please refer to Figure 4 During installation, the bottom of the vertical profile presses against the horizontal surface 61, and the vertical surface 62 is in contact with the inner wall of the profile. The first groove 5 is recessed directly below the horizontal surface 61, meaning the inner wall of the first groove 5 penetrates directly below the horizontal surface 61, causing the protrusion 6 to form two resilient triangular prisms. When the profile is pressed onto the triangular prisms, the triangular prisms can slightly bend downwards, preventing the rigid corner bracket from cracking at the dividing line after being compressed. Because the first groove 5 is provided on both sides of the inner corner of the corner bracket, the angle formed by the bottom surfaces of the two first grooves 5 (i.e., Figure 4 The angle between the two dotted lines becomes the new inner angle of the corner bracket. The protrusion 6 is essentially a thickened pad for the new inner angle. The profile presses on the protrusion 6 instead of directly on the new inner angle. The resilient protrusion 6 has a stress-relieving effect, making the new inner angle less stressed, thus preventing cracking from the new inner angle.
[0033] Please refer to Figure 1 The front side of the corner bracket (i.e., the side shown in the diagram) has an interference fit surface 3 and a bevel 4, while the opposite rear side is flat. Both the first corner bracket arm 1 and the second corner bracket arm 2 have an interference fit surface 3 and a bevel 4. The interference fit surfaces 3 of the first and second corner bracket arms 1 and 2 are symmetrically arranged on both sides of the glue injection groove 8. The bevel 4 is located between the interference fit surface 3 and the corner bracket away from the profile splice seam (i.e.,...). Figure 1 Between one end of the corner bracket (at the dotted line in the middle). The interference fit surface 3 is strip-shaped and its length extends along the length direction of the glue injection groove 8. The lengths of the first corner bracket arm 1 and the second corner bracket arm 2 can be the same or different, and this embodiment does not limit this. The width of the interference fit surface 3 is less than 1 / 10 of the shorter of the first corner bracket arm 1 and the second corner bracket arm 2, and greater than 5mm to ensure that the interference fit surface 3 can fully contact and interfere with the inner wall of the profile. After the corner bracket and the profile are installed, the interference fit surface 3 of the corner bracket interferes with the inner wall of the profile near the end, and there is a gap between the inclined surface 4 and the inner wall of the profile.
[0034] When machining the corner bracket, first mill both sides of the corner bracket blank into parallel planes, then machine one side of the blank plane, retaining the interference fit surface 3 at the center of this plane. Mill from the edge of the interference fit surface 3 towards the end of the blank to form the inclined surface 4. The inclined surface 4 decreases in height as it moves further away from the interference fit surface 3 along the length of the corner bracket, and the highest point of the inclined surface 4 is where it meets the interference fit surface 3.
[0035] When installing the corner brackets, the first corner bracket arm 1 is inserted into the first profile, and the second corner bracket arm 2 is inserted into the second profile. The two corner bracket arms are in interference fit with the inner walls of the two profiles through their respective interference fit surfaces 3. The corner brackets forcefully press against the inner walls at the ends of the two profiles through the two interference fit surfaces 3, so that the outer surfaces of the ends of the two profiles are flush with the sides of the joint.
[0036] After the two arms of the corner bracket are inserted into the two profiles respectively, the bevel 4 on the side of the corner bracket forms a gap with the inner wall of the profile. Since the contact surface of the interference fit surface 3 and the profile is located at the end of the profile, even if the contact surface is uneven, it is easy to grind. The lower bevel 4 prevents the uneven parts deep inside the profile from contacting the surface of the corner bracket. Compared with the existing technology where the entire side of the corner bracket is interference-fitted with the inner wall of the profile, the corner bracket in this embodiment is minimally affected by the uneven parts deep inside the profile. Moreover, the lower bevel 4 also allows both ends of the corner bracket to be smoothly inserted into the profile until the interference fit surface 3 enters the profile.
[0037] Please refer to Figure 1 and Figure 3The corner bracket has a second groove 10 on its inner side (upper side) and a second groove 10 on its outer side (lower side). The second groove 10 extends to the inclined surface 4. The edge of the first groove 5 penetrates into and connects to the glue injection groove 8. The inclined surface 4 of the corner bracket has a through hole 9 that extends through the front and rear sides of the corner bracket. When the syringe injects glue into the arc-shaped groove 7, the glue enters the glue injection groove 8 and the gap between the inclined surface 4 and the profile, and enters the through hole 9 and the second groove 10 from the gap, and enters the first groove 5 from the glue injection groove 8. After the glue solidifies, the corner bracket is firmly fixed in the profile and the alignment of the outer surface of the profile splice is maintained.
[0038] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A corner bracket for splicing profiles, characterized in that, The device includes a first corner bracket arm and a second corner bracket arm. The first corner bracket arm is used to insert into a first profile, and the second corner bracket arm is used to insert into a second profile. Both the first and second corner bracket arms have an interference fit surface and a bevel on the same side. The interference fit surface is located on both sides of the joint between the first and second profiles. The bevel is located between the interference fit surface and the end of the corner bracket away from the joint. The bevel is lower than the interference fit surface. The interference fit surface is used to mate with the inner wall of the profile. There is a gap between the bevel and the inner wall of the profile.
2. The angle bracket for profile splicing as described in claim 1, characterized in that, The interference fit surface is strip-shaped, and its length extends along the length direction of the splice seam.
3. The angle bracket for profile splicing as described in claim 2, characterized in that, The width of the interference fit surface is less than 1 / 10 of the length of the shorter of the first corner arm and the second corner arm, and greater than 5 mm.
4. The angle bracket for profile splicing as described in claim 1, characterized in that, The slope decreases as it moves further away from the interference fit surface along the length of the corner bracket.
5. The angle bracket for profile splicing as described in claim 4, characterized in that, The highest point of the inclined plane is in contact with the interference fit surface.
6. The angle bracket for profile splicing as described in claim 1, characterized in that, The first corner bracket arm and the second corner bracket arm are connected by a first groove on both sides of the inner corner. The two first grooves form a protruding bump at the inner corner. The bump has a horizontal surface and a vertical surface. The horizontal surface is used to support the bottom of the vertical profile, and the vertical surface is used to fit against the inner wall of the profile. The first groove is recessed directly below the horizontal surface.
7. The angle bracket for profile splicing as described in claim 1, characterized in that, The outer corner where the first corner arm and the second corner arm connect is provided with a concave arc-shaped groove, and the gap between the arc surface and the inner wall of the profile communicates with the arc-shaped groove.
8. The angle bracket for profile splicing as described in claim 7, characterized in that, A glue injection groove is provided at the connection between the first corner bracket arm and the second corner bracket arm. The interference fit surface is located on both sides of the glue injection groove, and the glue injection groove is connected to the arc-shaped groove.
9. The angle bracket for profile splicing as described in claim 7, characterized in that, The first corner bracket arm and the second corner bracket arm are provided with through holes that penetrate the inclined surface and the opposite side surface.
10. The angle bracket for profile splicing as described in claim 7, characterized in that, The corner bracket is provided with a second groove on both its inner and outer surfaces, and the second groove extends through the inclined surface.