An expansion bolt
By designing the fit between the fixing mechanism and the sliding mechanism in the expansion bolt, the contact area with the hole is increased, and the problems of low expansion strength and fewer contact surfaces of the existing expansion bolts are solved, thereby achieving higher firmness and stability.
Patent Information
- Application Number
- CN202421658708.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-07-12
AI Technical Summary
The expansion strength of existing expansion bolts is low and the contact surface is small, which makes it impossible to provide normal firmness and stability under external forces such as vibration.
By designing the coordination of the fixing mechanism and the sliding mechanism, the contact area with the fixed hole is increased. The specific implementation method includes a threaded rod leading the expansion ball to open the expansion strip to expand it outward, and expanding the first and second fixing plates through the fixing mechanism and the sliding mechanism to increase the contact surface of the cone.
It significantly improves the firmness and stability of the expansion bolts, and avoids the problem of loose connections caused by external forces such as vibration.
Smart Images
Figure CN222717242U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bolts, in particular to an expansion bolt. Background Art
[0002] Expansion bolts are bolts used to fix and connect components. They have a special structural design that can increase friction and tensile strength by expanding during installation, thereby improving the firmness and stability of the connection. Expansion bolts are usually used to fix materials such as concrete and brick walls, and are suitable for occasions that need to withstand large tensile and shear forces.
[0003] Existing expansion bolts are usually composed of bolts, nuts, washers, round blocks and expansion strips. During use, the round blocks impact the expansion strips to make them expand outward and increase the contact surface. However, the traditional expansion strength is low and the contact surface with the holes is also small. After vibration, it may not be able to provide normal firmness and stability. Therefore, the utility model provides an expansion bolt to solve the problems raised in the above background technology. Utility Model Content
[0004] The utility model aims to solve the shortcomings in the prior art and proposes an expansion bolt which increases the contact area with the fixing hole through the cooperation of the fixing mechanism and the sliding mechanism, thereby making the firmness and stability higher.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] An expansion bolt comprises a threaded rod, a nut is sleeved on one side of the threaded rod shaft, a gasket is slidably arranged on one side of the threaded rod shaft, an expansion sleeve is sleeved on the threaded rod shaft, an expansion strip is fixedly arranged on one side of the expansion sleeve, an expansion ball is fixedly arranged on one side of the threaded rod shaft, a fixing mechanism is fixedly arranged on one side of the threaded rod, and a sliding mechanism is fixedly arranged inside the fixing mechanism;
[0007] The fixing mechanism comprises a threaded rotating rod, the threaded rotating rod body is provided with a bearing, the bearing shaft body is slidably provided with a fixing sleeve, the fixing sleeve body is rotatably provided with a rotating shaft on all four sides, the four rotating shaft shaft bodies are fixedly provided with a first fixing plate, and the upper ends of the four first fixing plates are fixedly provided with a cone;
[0008] Through the above technical solution, by turning the nut, the threaded rod can move to one side through the gasket, and then the threaded rod moves to one side with the expansion ball, and then the expansion ball opens the expansion strip to expand it toward the outside. After reaching the optimal expansion point, stop rotating. In this process, the fixing mechanism will also rotate with the threaded rod. The threaded rod rotates with the threaded rotating rod, and then moves horizontally with the bearing, pushing the second fixed plate outward through the sliding mechanism, and then the second fixed plate expands with the first fixed plate away from the sliding mechanism, and is clamped by the cone, thereby increasing the contact surface between the product and the hole, and fixing it more firmly.
[0009] Further, two opposite sides of the four first fixing plates are fixedly provided with a second fixing plate, and two opposite sides of the four second fixing plates are fixedly provided with a slope;
[0010] Through the above technical solution, the second fixed plate sliding mechanism can move the first fixed plate and the cone on the first fixed plate when driven, and the slope facilitates the sliding mechanism to slide inside and guide and idle the sliding hook to a certain extent.
[0011] Furthermore, the sliding mechanism comprises four fixed blocks, and a slanted plate is fixedly provided on one side of each of the four fixed blocks;
[0012] Through the above technical solution, the fixed block moves with the bearing on the threaded rotating rod, and then the inclined plate slides inside the slope while pushing the second fixed plate to expand outward, and then more contact surfaces and fixation can be achieved through the cone of the first fixed plate.
[0013] Furthermore, a metal ring is fixedly arranged on one side of the expansion sleeve, and the metal ring is fixedly arranged on the outer ends of the plurality of expansion strips;
[0014] Through the above technical solution, the expansion strip is protected to a certain extent and the expansion strip is bent.
[0015] Further, one side of the threaded rod body is a fixed rod and is connected to a fixing mechanism;
[0016] Through the above technical solution, the threaded rotating rod inside the fixing mechanism is driven to rotate.
[0017] Furthermore, the sliding mechanism is fixedly arranged on one side of the bearing shaft body;
[0018] Through the above technical solution, the sliding mechanism moves with the bearing, and then pushes the fixing mechanism to open it.
[0019] The utility model has the following beneficial effects:
[0020] 1. The utility model proposes an expansion bolt, in which the fixing mechanism rotates with the threaded rod, and the threaded rod rotates with the threaded rotating rod, and with the bearing, the second fixing plate is pushed outward through the sliding mechanism, and then the second fixing plate expands the first fixing plate in the direction away from the sliding mechanism, and the cone clamps the outside, thereby increasing the contact surface between the product and the hole, avoiding vibration caused by too long a time, and being more firm.
[0021] 2. The utility model proposes an expansion bolt. The nut is rotated so that the threaded rod can move to one side through the gasket. Then the threaded rod moves to one side with the expansion ball. Then the expansion ball opens the expansion strip to expand it toward the outer end. After reaching the best expansion point, the rotation is stopped to complete the initial expansion, so that the bolt can be fixed more firmly. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of the axial side of the utility model;
[0023] Figure 2 It is a schematic diagram of the shaft side of the incompletely installed fixing mechanism of the utility model;
[0024] Figure 3 It is a partial isometric view of the fixing mechanism of the utility model;
[0025] Figure 4 It is a partial isometric view of the fixing mechanism of the utility model.
[0026] Legend:
[0027] 1. Threaded rod; 2. Nut; 3. Gasket; 4. Expansion sleeve; 5. Metal ring; 6. Expansion strip; 7. Expansion ball; 8. Fixing mechanism; 9. Sliding mechanism; 801. Threaded rotating rod; 802. Bearing; 803. Fixing sleeve; 804. Rotating shaft; 805. First fixing plate; 806. Cone; 807. Second fixing plate; 808. Slope; 901. Fixing block; 902. Inclined plate. DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] Reference Figure 1-4The utility model provides an embodiment: an expansion bolt, including a threaded rod 1, a nut 2 is sleeved on one side of the rod body of the threaded rod 1 to enable the threaded rod 1 to move, a gasket 3 is slidably arranged on one side of the rod body of the threaded rod 1, and the threaded rod 1 can be moved outward through the thread sleeve in cooperation with the nut 2, and the rod body of the threaded rod 1 is sleeved with an expansion sleeve 4, and an expansion strip 6 is fixedly arranged on one side of the expansion sleeve 4 to increase the friction and contact surface with the hole by expanding outward, an expansion ball 7 is fixedly arranged on one side of the rod body of the threaded rod 1 to push the expansion strip 6, and a fixing mechanism 8 is fixedly arranged on one side of the threaded rod 1 to improve firmness and stability, and a sliding mechanism 9 is fixedly arranged inside the fixing mechanism 8 to improve stability in cooperation with the fixing mechanism 8;
[0030] The fixing mechanism 8 includes a threaded rotating rod 801. As the threaded rod 1 rotates, the threaded rotating rod 801 is provided with a bearing 802. The inside rotates with the threaded rotating rod 801, and the outside does not rotate. As the inside moves, the bearing 802 is provided with a fixed sleeve 803 on the shaft body. The fixed sleeve 803 is provided with a rotating shaft 804 rotating around the inside of the sleeve body. The four rotating shafts 804 are fixedly provided with a first fixing plate 805. The upper ends of the four first fixing plates 805 are fixedly provided with a cone 806. By rotating the nut 2, the threaded rod 1 can be moved to one side through the gasket 3, and then the threaded rod 1 Move the expansion ball 7 to one side, and then the expansion ball 7 opens the expansion strip 6 to expand it toward the outside. After reaching the optimal expansion point, stop rotating. In this process, the fixing mechanism 8 will also rotate with the threaded rod 1. The threaded rod 1 rotates with the threaded rotating rod 801, and then moves horizontally with the bearing 802. The second fixing plate 807 is pushed outward by the sliding mechanism 9, and then the second fixing plate 807 expands with the first fixing plate 805 away from the sliding mechanism 9, and is clamped by the cone 806, thereby increasing the contact surface between the product and the hole, and fixing it more firmly.
[0031] The four first fixing plates 805 are fixedly provided with second fixing plates 807 on opposite sides of each other, and the four second fixing plates 807 are fixedly provided with slopes 808 on opposite sides of each other. When the second fixing plates 807 are driven by the sliding mechanism 9, they can move the first fixing plates 805 and the cone 806 on the first fixing plates 805. The slope 808 facilitates the sliding mechanism 9 to slide inside and guides and restricts the sliding mechanism 9 to a certain extent. The sliding mechanism 9 includes four fixing blocks 901, and the four fixing blocks 901 are fixedly provided with inclined plates 902 on one side. The fixing blocks 901 move along the shaft of the threaded rotating rod 801 with the bearing 802, and then are moved by the inclined plates 9 02 pushes the second fixed plate 807 to expand outward while sliding inside the ramp 808, and then more contact surfaces and fixation can be achieved through the cone 806 of the first fixed plate 805. A metal ring 5 is fixedly arranged on one side of the expansion sleeve 4. The metal ring 5 is fixedly arranged on the outer ends of multiple expansion strips 6 to provide certain protection for the expansion strips 6 and to bend the expansion strips 6. One side of the rod body of the threaded rod 1 is a fixed rod and is connected to the fixing mechanism 8, which drives the threaded rotating rod 801 inside the fixing mechanism 8 to rotate. The sliding mechanism 9 is fixedly arranged on one side of the shaft body of the bearing 802. The sliding mechanism 9 moves with the bearing 802, and then completes the pushing of the fixing mechanism 8 to open it.
[0032] Working principle: Turn the nut 2 so that the threaded rod 1 can move to one side through the gasket 3, and then the threaded rod 1 moves to one side with the expansion ball 7, and the expansion ball 7 opens the expansion strip 6 and expands the expansion strip 6 toward the outer end. After reaching the optimal expansion point, stop rotating. In this process, the fixing mechanism 8 will also rotate with the threaded rod 1. The threaded rod 1 rotates with the threaded rotating rod 801, and then moves horizontally with the bearing 802, and pushes the second fixed plate 807 outward through the sliding mechanism 9. Then the second fixed plate 807 expands with the first fixed plate 805 away from the sliding mechanism 9, and is clamped by the cone 806, thereby increasing the contact surface between the product and the hole.
[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An expansion bolt, comprising a threaded rod (1), characterized in that: A nut (2) is sleeved on one side of the threaded rod (1), a gasket (3) is slidably provided on one side of the threaded rod (1), an expansion sleeve (4) is slidably sleeved on the threaded rod (1), an expansion strip (6) is fixedly provided on one side of the expansion sleeve (4), an expansion ball (7) is fixedly provided on one side of the threaded rod (1), a fixing mechanism (8) is fixedly provided on one side of the threaded rod (1), and a sliding mechanism (9) is fixedly provided inside the fixing mechanism (8); The fixing mechanism (8) comprises a threaded rotating rod (801), the rod body of the threaded rotating rod (801) is provided with a bearing (802), the shaft body of the bearing (802) is slidably provided with a fixing sleeve (803), the inside of the fixing sleeve (803) is rotatably provided with a rotating shaft (804) on all four sides, the shaft bodies of the four rotating shafts (804) are all fixedly provided with a first fixing plate (805), and the upper ends of the four first fixing plates (805) are all fixedly provided with a cone (806).
2. An expansion bolt according to claim 1, characterized in that: A second fixing plate (807) is fixedly disposed on one side of each of the four first fixing plates (805) that are opposite to each other, and a slope (808) is fixedly disposed on one side of each of the four second fixing plates (807) that are opposite to each other.
3. An expansion bolt according to claim 1, characterized in that: The sliding mechanism (9) comprises four fixed blocks (901), and a slanted plate (902) is fixedly provided on one side of each of the four fixed blocks (901).
4. An expansion bolt according to claim 1, characterized in that: A metal ring (5) is fixedly arranged on one side of the expansion sleeve (4), and the metal ring (5) is fixedly arranged on the outer ends of a plurality of expansion strips (6).
5. An expansion bolt according to claim 1, characterized in that: One side of the threaded rod (1) is a fixed rod and is connected to a fixing mechanism (8).
6. An expansion bolt according to claim 1, characterized in that: The sliding mechanism (9) is fixedly arranged on one side of the shaft body of the bearing (802).