Fastening screw with adjustable pressure

Abstract

The utility model discloses an adjustable pressure fastening screw which comprises a screw body and a nut, the outer side of the screw body is connected with the nut in an embedded mode, the bottom of the nut is fixedly connected with a connecting block, a sliding groove is formed in the inner side of the connecting block, an adjusting plate is arranged on the inner side of the connecting block, and the left side and the right side of the adjusting plate are both fixedly connected with sliding blocks. The adjusting plate is embedded into the sliding groove through the sliding block and connected with the connecting block in an embedded mode, a contact plate connected with the screw body in an embedded mode is arranged at the lower end of the connecting block, and the contact plate and the adjusting plate are arranged, so that pressure is dispersed by increasing the contact area; the situation of surface deformation of the gasket and the connecting piece caused by excessively concentrated pressure applied by the nut is avoided, and the adjusting screw hole and the adjusting screw rod are arranged, so that the adjusting plate and the contact plate can synchronously make contact with the gasket without manually pressing the adjusting plate downwards to the same horizontal plane with the contact plate.

Description

Technical Field

[0001] This utility model relates to the field of fastening screw technology, and in particular to an adjustable pressure fastening screw. Background Technology

[0002] Fastening screws, also commonly known as bolts or screws, are mechanical parts used to connect and fasten mechanical parts or structural components. They are widely used in various mechanical equipment, building structures, furniture and other fields. When using existing fastening screws, washers are usually placed at the screw holes to prevent excessive local pressure. Washers can evenly distribute the pressure of the screw over a larger area, reducing the pressure per unit area and protecting the surface of the connected parts. However, in actual use, when using washers to distribute pressure, due to the small area of ​​the nut, excessive pressure can still occur between the washers and the surface of the connected parts, resulting in dents on the surface of the connected parts.

[0003] The present invention aims to provide an adjustable pressure fastening screw to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of the prior art as described in the background section by proposing an adjustable pressure fastening screw.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An adjustable pressure fastening screw includes a screw body and a nut. The nut is fitted onto the outer side of the screw body, and a connecting block is fixedly connected to the bottom of the nut. A groove is formed on the inner side of the connecting block, and an adjusting plate is provided on the inner side of the connecting block. Slider blocks are fixedly connected to both the left and right sides of the adjusting plate. The adjusting plate is fitted into the connecting block through the sliders embedded in the groove. A contact plate is provided at the lower end of the connecting block and fitted into the screw body.

[0007] Preferably, an adjusting screw hole is fixedly connected to the inner side of the contact plate, and an adjusting screw is provided on the lower end surface of the screw body located inside the connecting block and the contact plate.

[0008] Preferably, the surfaces of the nut, adjusting plate and contact plate are all provided with fixing screw holes, and the upper surface of the nut is fitted with a limit bolt.

[0009] Preferably, the slider is rectangular in shape, and both the upper and lower ends of the slider are fixedly connected to limit rods.

[0010] Preferably, the inner side of the adjustment plate is an arc surface, and the curvature of the arc surface is consistent with the curvature of the outer side of the contact plate.

[0011] Preferably, the adjusting plate is composed of two parts: a connecting plate and a supporting plate, with the connecting plate located on the side closer to the screw body.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. In this utility model, by setting a contact plate and an adjustment plate, when the screw is screwed between two connecting parts, the adjustment plates extending from the left and right sides of the contact plate can also contact the washer, thereby increasing the contact area between the bolt and the washer. By increasing the contact area, the pressure is dispersed, and the deformation of the washer and connecting parts surface caused by excessive pressure applied by the nut is avoided.

[0014] 2. By setting an adjusting screw hole and adjusting screw, when the operator screws the bolt into the device, the bottom of the adjusting plate and the contact plate can be adjusted to the same horizontal plane simultaneously. This means that the adjusting plate and the contact plate can make synchronous contact with the gasket without manually pressing the adjusting plate down to the same horizontal plane as the contact plate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an adjustable pressure fastening screw proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the unfolded structure of the adjustment plate of this device;

[0017] Figure 3 This is a schematic diagram of the connecting block and adjusting plate structure;

[0018] Figure 4 This is a schematic diagram of a partial cross-sectional structure of the device.

[0019] In the diagram: 1. Screw body; 2. Nut; 3. Connecting block; 4. Contact plate; 5. Adjusting plate; 6. Slide groove; 7. Slider; 8. Adjusting screw hole; 9. Adjusting screw. Detailed Implementation

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example

[0025] Reference Figure 1-4 An adjustable pressure fastening screw includes a screw body 1 and a nut 2. The nut 2 is fitted onto the outer side of the screw body 1, and a connecting block 3 is fixedly connected to the bottom of the nut 2. A groove 6 is formed on the inner side of the connecting block 3, and an adjusting plate 5 is provided on the inner side of the connecting block 3. Slider blocks 7 are fixedly connected to both sides of the adjusting plate 5. The adjusting plate 5 is fitted into the groove 6 through the sliders 7 and connected to the connecting block 3. The lower end of the connecting block 3 is provided with a contact plate 4 that is fitted into the screw body 1. When a tight connection is required between the two fasteners, the worker can unscrew the fixing bolt on the upper surface of the nut 2, and then pull the left and right sides of the nut 2. The adjusting plate 5 is pulled out to its maximum extent. During this process, the sliders 7 on the left and right sides of the adjusting plate 5 will slide in the grooves 6 inside the connecting block 3. After the adjusting plate 5 is pulled out, the operator can screw the screw between the two connecting parts by rotating the nut at the top of the screw body 1. During this process, the contact plate 4 contacts the washer on the surface of the connecting part, and the adjusting plates 5 extending from the left and right sides of the contact plate 4 can also contact the washer, thereby increasing the contact area between the bolt and the washer. By increasing the contact area, the pressure is distributed, and the deformation of the washer and connecting part surface caused by the excessive pressure applied by the nut is avoided.

[0026] An adjusting screw hole 8 is fixedly connected to the inner side of the contact plate 4. An adjusting screw 9 is provided on the lower surface of the screw body 1, located inside the connecting block 3 and the contact plate 4. With this design, after the adjusting plate 5 is unfolded, the adjusting screw 9 on the surface of the screw body 1 will be screwed into the adjusting screw hole 8 on the inner side of the contact plate 4 during the process of screwing in the screw body 1. During this process, the adjusting screw 9 and the adjusting screw hole 8 move the nut 2 downward through a method similar to screw drive, which in turn causes the connecting block 3 to drive the adjusting plate 5 downward. When the adjusting screw 9 is fully screwed into the inner side of the adjusting screw hole 8, the bottom of the adjusting plate 5 will be at the same level as the bottom of the contact plate 4. At this time, since the adjusting screw 9 is fully screwed into the inner side of the adjusting screw hole 8, the device can simultaneously adjust the bottom of the adjusting plate 5 and the contact plate 4 to the same level during the process of screwing in the bolt, so that the adjusting plate 5 and the contact plate 4 can simultaneously contact the gasket.

[0027] The surfaces of the nut 2, adjusting plate 5 and contact plate 4 are all provided with fixing screw holes, and the upper surface of the nut 2 is fitted with a limit bolt. Through this design, when the adjusting plate 5 is not needed, the operator does not need to remove the limit bolt. Thus, when the operator rotates the nut, the limit bolt can fix the nut 2, connecting block 3 and contact plate 4.

[0028] The slider 7 is rectangular in shape, and the upper and lower ends of the slider 7 are fixedly connected to limit rods. The upper and lower ends of the inner side of the connecting block 3 are provided with limit grooves, so that when the slider 7 moves inside the connecting block 3, the limit rods at the upper and lower ends of the slider 7 can slide in the limit grooves, thus preventing the slider 7 from shifting inside the connecting block 3.

[0029] The inner side of the adjusting plate 5 is an arc surface, and the curvature of the arc surface is consistent with the curvature of the outer side of the contact plate 4. With this setting, the adjusting plate 5 is in the unfolded state, and when the screw body 1 is screwed into the connector, the outer side of the adjusting plate 5 can move downward along the outer side of the contact plate 4, avoiding the situation where the adjusting plate 5 cannot move smoothly to the outer side of the contact plate 4 due to collision between the adjusting plate 5 and the contact plate 4.

[0030] The adjusting plate 5 is composed of two parts: a connecting plate and a support plate. The connecting plate is located on the side close to the screw body 1. With this design, when the adjusting plate 5 is in the retracted state, the support plate can play a supporting role between the nut 2 and the contact plate 4, so as to prevent the nut 2 and the contact plate 4 from loosening after the screw body 1 is screwed into the connector.

[0031] Working principle: When a tight connection is required between two connectors, the operator can unscrew the fixing bolt on the upper surface of the nut 2. Then, the operator can pull the adjusting plates 5 on both sides of the nut 2 to the maximum extent. During this process, the sliders 7 on both sides of the adjusting plates 5 will slide in the grooves 6 inside the connecting block 3. After the adjusting plates 5 are pulled out, the operator can rotate the nut at the top of the screw body 1 to screw the screw into the two connectors. During this process, the contact plate 4 contacts the washer on the surface of the connector, and the adjusting plates 5 extending from both sides of the contact plate 4 can also contact the washer, thereby increasing the contact area between the bolt and the washer. By increasing the contact area, the pressure is distributed, avoiding the deformation of the washer and the surface of the connector caused by excessive pressure applied by the nut.

[0032] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

[0033] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

Claims

1. An adjustable pressure fastening screw, comprising a screw body (1) and a nut (2), characterized in that, A nut (2) is fitted and connected to the outside of the screw body (1), and a connecting block (3) is fixedly connected to the bottom of the nut (2). A sliding groove (6) is provided on the inner side of the connecting block (3). An adjusting plate (5) is provided on the inner side of the connecting block (3), and sliders (7) are fixedly connected to both the left and right sides of the adjusting plate (5). The adjusting plate (5) is fitted and connected to the connecting block (3) through the slider (7) embedded in the sliding groove (6). A contact plate (4) is provided at the lower end of the connecting block (3) and fitted and connected to the screw body (1).

2. The adjustable pressure fastening screw according to claim 1, characterized in that, An adjusting screw hole (8) is fixedly connected to the inner side of the contact plate (4), and an adjusting screw (9) is provided on the lower end surface of the screw body (1) located inside the connecting block (3) and the contact plate (4).

3. The adjustable pressure fastening screw according to claim 1, characterized in that, The surfaces of the nut (2), adjusting plate (5) and contact plate (4) are all provided with fixing screw holes, and the upper surface of the nut (2) is fitted with a limit bolt.

4. The adjustable pressure fastening screw according to claim 2, characterized in that, The slider (7) is rectangular in shape, and both the upper and lower ends of the slider (7) are fixedly connected to limit rods.

5. The adjustable pressure fastening screw according to claim 1, characterized in that, The inner side of the adjustment plate (5) is an arc surface, and the curvature of the arc surface is consistent with the curvature of the outer side of the contact plate (4).

6. The adjustable pressure fastening screw according to claim 2, characterized in that, The adjustment plate (5) is composed of two parts: a connecting plate and a support plate, with the connecting plate located on the side close to the screw body (1).

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