Building main body expansion joint decoration construction structure
By designing a centering mechanism and elastic support edges, the positioning and service life of the cover plate when the joint width changes are solved, ensuring the aesthetics and sealing effect of the building expansion joint.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 四川省建筑机械化工程有限公司
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-01
AI Technical Summary
Existing building expansion joint cover panels cannot simultaneously ensure positioning, service life, and covering effect when the joint width changes, and are prone to misalignment or damage.
A centering mechanism is adopted, including a first centering arm, a second centering arm, and a connecting seat. It is fixed to both sides of the expansion joint via a central axis. The cover plate is fixedly connected to the connecting seat, and the elastically bent support edge compensates for changes in the joint width to maintain the covering effect.
It achieves stable positioning of the cover plate when the seam width changes, extends its service life, maintains a good covering effect, and avoids misalignment and damage.
Smart Images

Figure CN224186959U_ABST
Abstract
Description
A construction structure for decorative expansion joints in building structures Technical Field
[0001] This utility model relates to the field of building construction technology, specifically to a decorative construction structure for building expansion joints. Background Technology
[0002] Expansion joints, also known as building expansion joints, are structural joints installed at appropriate locations along the construction joint direction of a building or structure to prevent cracks or damage caused by changes in climate temperature (thermal expansion and contraction). Expansion joints divide building components above the foundation, such as walls, floors, and roofs (except for wooden roofs), into two independent parts, allowing the building or structure to expand and contract horizontally along its length.
[0003] Exposed expansion joints are not only unsightly but also prone to leakage. Therefore, cover plates are commonly used to cover expansion joints. However, since the width of expansion joints changes with environmental conditions, cover plates cannot be directly fixed to the main building structure on both sides of the expansion joint. Otherwise, when the joint width changes, the cover plate will be subjected to outward tension or inward pressure, causing unnecessary deformation of the cover plate or even irreversible damage.
[0004] If the cover plate is not directly fixed to the main building structure on both sides of the expansion joint, although the shape of the cover plate can be guaranteed not to change, the cover plate is prone to misalignment after the joint width changes multiple times, and may even cause the expansion joint to be exposed again. Summary of the Invention
[0005] The purpose of this utility model is to provide a construction structure for decorative expansion joints in building structures, which can solve the problem that the covering plate cannot simultaneously take into account positioning, service life and its own covering effect when covering expansion joints.
[0006] This utility model is achieved through the following technical solution:
[0007] A decorative construction structure for building expansion joints includes a centering mechanism comprising multiple centering components, each including a first centering arm, a second centering arm, and a connecting seat. The first and second centering arms are of the same length, with one end of the first and one end of the second centering arm aligned via a central axis. The free ends of the first and second centering arms are aligned with the side walls of the expansion joint, respectively. The connecting seat is aligned with the central axis. A cover plate is also included, used to cover the expansion joint. The centerline of the cover plate is fixedly connected to all the connecting seats, and the edges of the cover plate are elastically bent to form supporting edges that abut against the surface of the building structure.
[0008] Optionally, the centering mechanism further includes a telescopic rod, the two ends of which are respectively aligned with the free ends of the first centering arm and the second centering arm; the telescopic rod is slidably fitted with a centering cylinder, the side wall of the centering cylinder is connected to a fixed-angle telescopic rod, and the other end of the fixed-angle telescopic rod is fixedly connected to the connecting seat.
[0009] Optionally, the telescopic rod is arranged perpendicular to the wall of the expansion joint.
[0010] Optionally, the fixed-angle telescopic rod is arranged perpendicular to the fixed-center cylinder.
[0011] Optionally, the fixed-angle telescopic rod is arranged perpendicular to the central axis.
[0012] Optionally, a connecting plate is fixedly connected to each end of the telescopic rod. The connecting plate is perpendicular to the telescopic rod and is used to fit against the joint wall of the expansion joint and be fixedly connected by bolts.
[0013] Optionally, the centering mechanism further includes a hanging rod, which is arranged parallel to the central axis. Both ends of the hanging rod are fixedly connected to the wall of the expansion joint through fixed seats, so that a hanging gap is reserved between the hanging rod and the wall of the expansion joint. The free end of the first centering arm or the free end of the second centering arm is provided with a hook, which is detachably hung with the hanging rod. When the hook is hung with the hanging rod, the connecting plate on the same side is in contact with the wall of the expansion joint.
[0014] Optionally, the connecting seat has a connecting plane on the side away from the centering cylinder, the connecting plane is perpendicular to the fixed angle telescopic rod, and the connecting plane is attached to and fixedly connected to the back of the cover plate.
[0015] Optionally, it also includes a waterstop strip, the two sides of which are respectively connected to the joint walls on both sides of the expansion joint.
[0016] Optionally, the waterstop is connected to embedded parts on both sides, and the embedded parts are embedded in the interior of the building body located on both sides of the expansion joint.
[0017] Compared with the prior art, this utility model has the following advantages and beneficial effects:
[0018] This utility model provides a decorative construction structure for building expansion joints. By setting a centering mechanism, the structure includes a first centering arm, a second centering arm, and a connecting seat. The first and second centering arms are aligned with a central axis, and their free ends are aligned with the joint walls on both sides of the expansion joint. The connecting seat is aligned with the central axis. The first and second centering arms, being of equal length, fix the position of the connecting seat, ensuring it remains centered within the expansion joint. Regardless of whether the joint width increases or decreases, only the angle between the first and second centering arms changes; the position of the central axis remains unchanged, and consequently, the position of the connecting seat is also unaffected. A cover plate is also included. The centerline is fixedly connected to all connecting seats, thus fixing their position. Regardless of whether the width of the expansion joint increases or decreases, the position of the cover plate remains unchanged. By setting the edge of the cover plate to form a support edge with elastic bending, when the included angle between the first and second fixed center arms changes with the joint width, the distance between the connecting seat and the main building will also change accordingly. The elastic bending support edge compensates for this distance change, thus maintaining the covering effect of the cover plate. Through the cooperation of the above features, this building expansion joint decoration construction structure can effectively solve the problem that the cover plate cannot simultaneously consider positioning, service life, and its own covering effect when covering expansion joints. Attached Figure Description
[0019] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:
[0020] Figure 1 is a front view schematic diagram of the building expansion joint decoration construction structure provided in the embodiment of this utility model;
[0021] Figure 2 is a top view of the building expansion joint decoration construction structure provided in the embodiment of this utility model;
[0022] Figure 3 is a schematic diagram of the centering mechanism of the building main body expansion joint decoration construction structure provided in the embodiment of this utility model.
[0023] The attached diagram shows the markings and corresponding component names:
[0024] 10-First fixed center arm; 11-Second fixed center arm; 12-Connecting seat; 13-Central shaft; 14-Telescopic rod; 141-Fixed center cylinder; 142-Fixed angle telescopic rod; 143-Connecting plate; 15-Hanging rod; 151-Fixed seat; 16-Hook; 20-Cover plate; 21-Supporting edge; 30-Waterstop; 31-Embedded part. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.
[0026] Example
[0027] Referring to Figures 1 to 3, this embodiment provides a decorative construction structure for the expansion joint of a building structure, including a centering mechanism. The centering mechanism includes multiple centering components, each including a first centering arm 10, a second centering arm 11, and a connecting seat 12. The first centering arm 10 and the second centering arm 11 have the same length. One end of the first centering arm 10 and one end of the second centering arm 11 are aligned via a central axis 13. The free ends of the first centering arm 10 and the second centering arm 11 are aligned with the two side walls of the expansion joint, respectively. The connecting seat 12 is aligned with the central axis 13. The second component includes a cover plate 20, which is used to cover the expansion joint. The centerline of the cover plate 10 is fixedly connected to all the connecting seats 12. The edge of the cover plate 10 is elastically bent to form a supporting edge 21, which abuts against the surface of the building structure.
[0028] The building expansion joint decoration construction structure provided in this embodiment uses a centering mechanism, comprising a first centering arm 10, a second centering arm 11, and a connecting seat 12. The first and second centering arms 10 and 11 are aligned with a central axis 13, with their free ends aligned with the joint walls on both sides of the expansion joint. The connecting seat 12 is aligned with the central axis 13. The first and second centering arms 10 and 11, being of equal length, fix the position of the connecting seat 12, ensuring it remains centered within the expansion joint. Regardless of whether the joint width increases or decreases, only the angle between the first and second centering arms 10 and 11 changes; the position of the central axis 13 remains unchanged, and consequently, the position of the connecting seat 12 remains the same. By providing a covering... The cover plate 20 is fixedly connected to all the connecting seats 12 along its centerline, thus fixing its position. Regardless of whether the width of the expansion joint increases or decreases, the position of the cover plate 20 remains unchanged. By setting the edge of the cover plate 20 to elastically bend and form a supporting edge 21, when the included angle between the first centering arm 10 and the second centering arm 11 changes with the joint width, the distance between the connecting seat 12 and the main building structure also changes accordingly. The elastically bent supporting edge 21 compensates for this distance change, thus maintaining the covering effect of the cover plate 20. Through the cooperation of these features, this building structure expansion joint decoration construction structure effectively solves the problem that the cover plate cannot simultaneously consider positioning, service life, and its own covering effect when covering expansion joints.
[0029] In order to fix the angle of the connecting seat 12, and thus fix the angle of the cover plate 20 connected to it, so that it can always be parallel to the surface of the building body, the centering mechanism also includes a telescopic rod 14. The two ends of the telescopic rod 14 are respectively aligned with the free ends of the first centering arm 10 and the second centering arm 11. The telescopic rod 14 is coaxially slidably fitted with a centering cylinder 141. The side wall of the centering cylinder 141 is connected to a fixed angle telescopic rod 142. The other end of the fixed angle telescopic rod 142 is fixedly connected to the connecting seat 12.
[0030] With the above settings, since the positions of the free ends of the first centering arm 10 and the second centering arm 11 are fixed, the line connecting the two is fixed, the straight line where the telescopic rod 14 is located is fixed, the axis of the centering cylinder 141 is fixed, the position of the straight line where the fixed angle telescopic rod 142 is located is fixed, and the angle of the connecting seat 12 connected to it is fixed.
[0031] To further optimize the stress and structure, the telescopic rod 14 is set perpendicular to the wall of the expansion joint.
[0032] To further optimize the stress and structure, the fixed-angle telescopic rod 142 is set perpendicular to the fixed-center cylinder 141.
[0033] To further optimize the force and structure, the fixed-angle telescopic rod 142 is set perpendicular to the central axis 13.
[0034] In order to increase the contact area at the connection between the centering mechanism and the joint wall of the expansion joint, thereby improving the connection performance, a connecting plate 143 is fixedly connected to each end of the expansion rod 14. The connecting plate 143 is perpendicular to the expansion rod 14 and is used to fit against the joint wall of the expansion joint and be fixedly connected by bolts.
[0035] To facilitate the installation and adjustment of the centering mechanism, the centering mechanism also includes a hanging rod 15, which is arranged parallel to the central axis 13. Both ends of the hanging rod 15 are fixedly connected to the joint wall of the expansion joint through fixing seats 151, so that a hanging gap is reserved between the hanging rod 15 and the joint wall of the expansion joint. The free end of the first centering arm 10 or the free end of the second centering arm 11 is provided with a hook 16, which is detachably hung with the hanging rod 15. When the hook 16 is hung with the hanging rod 15, the connecting plate 143 on the same side is in contact with the joint wall of the expansion joint.
[0036] With the above settings, during installation, one side of the centering mechanism can be quickly fixed by hook 16 and hanging rod 15, and then slid along hanging rod 15 to determine the actual installation position. After determining the position, the connecting plate 143 can be bolted to the seam wall.
[0037] In order to improve the connection performance between the connecting seat 12 and the cover plate 20, a connecting plane is provided on the side of the connecting seat 12 away from the centering cylinder 141. The connecting plane is perpendicular to the fixed angle telescopic rod 142, and the connecting plane is attached to and fixedly connected to the back of the cover plate 20.
[0038] To further prevent leakage at the joints, the above-mentioned building expansion joint decoration construction structure also includes a waterstop 30, the two sides of which are connected to the joint walls on both sides of the expansion joint.
[0039] In order to improve the fixing and sealing performance of the waterstop 30, embedded parts 31 are connected to both sides of the waterstop 30. The embedded parts 31 are embedded in the interior of the building body located on both sides of the expansion joint.
[0040] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A construction structure for decorative expansion joints in building structures, characterized in that, include: A centering mechanism, comprising multiple centering components, including a first centering arm (10), a second centering arm (11), and a connecting seat (12). The first centering arm (10) and the second centering arm (11) are of the same length. One end of the first centering arm (10) and one end of the second centering arm (11) are aligned via a central axis (13). The free ends of the first centering arm (10) and the free ends of the second centering arm (11) are aligned with the two side walls of the expansion joint, respectively. The connecting seat (12) is aligned with the central axis (13). A cover plate (20), used to cover the expansion joint, has its centerline fixedly connected to all the connecting seats (12). The edge of the cover plate (10) is elastically bent to form a supporting edge (21), which abuts against the surface of the building body.
2. The building expansion joint decoration construction structure according to claim 1, characterized in that, The centering mechanism also includes a telescopic rod (14), the two ends of which are respectively aligned with the free ends of the first centering arm (10) and the second centering arm (11); the telescopic rod (14) is coaxially slidably fitted with a centering cylinder (141), and the side wall of the centering cylinder (141) is connected to a fixed angle telescopic rod (142), the other end of which is fixedly connected to the connecting seat (12).
3. The building expansion joint decoration construction structure according to claim 2, characterized in that, The telescopic rod (14) is set perpendicular to the wall of the expansion joint.
4. The building expansion joint decoration construction structure according to claim 3, characterized in that, The fixed-angle telescopic rod (142) is set perpendicular to the fixed-center cylinder (141).
5. The building expansion joint decoration construction structure according to claim 4, characterized in that, The fixed-angle telescopic rod (142) is set perpendicular to the central axis (13).
6. The building expansion joint decoration construction structure according to claim 5, characterized in that, A connecting plate (143) is fixedly connected to each end of the telescopic rod (14). The connecting plate (143) is perpendicular to the telescopic rod (14) and is used to fit against the joint wall of the expansion joint and be fixedly connected by bolts.
7. The building expansion joint decoration construction structure according to claim 6, characterized in that, The centering mechanism also includes a hanging rod (15), which is arranged parallel to the central axis (13). Both ends of the hanging rod (15) are fixedly connected to the joint wall of the expansion joint through a fixing seat (151) so that a hanging gap is reserved between the hanging rod (15) and the joint wall of the expansion joint. The free end of the first centering arm (10) or the free end of the second centering arm (11) is provided with a hook (16), which is detachably hung with the hanging rod (15). When the hook (16) is hung with the hanging rod (15), the connecting plate (143) on the same side is in contact with the joint wall of the expansion joint.
8. The building expansion joint decoration construction structure according to claim 6, characterized in that, The connecting seat (12) has a connecting plane on the side away from the centering cylinder (141). The connecting plane is perpendicular to the fixed angle telescopic rod (142). The connecting plane is attached to and fixedly connected to the back of the cover plate (20).
9. The building expansion joint decoration construction structure according to claim 1, characterized in that, It also includes a waterstop (30), the two sides of which are connected to the joint walls on both sides of the expansion joint.
10. The building expansion joint decoration construction structure according to claim 9, characterized in that, The waterstop (30) is connected to embedded parts (31) on both sides, and the embedded parts (31) are embedded in the interior of the building body located on both sides of the expansion joint.