High-temperature-resistant inner hexagonal pan head screw

Abstract

The utility model discloses a high temperature resistant inner hexagonal pan head screw, which relates to the field of screws, and comprises a screw main body, the top of the screw main body is provided with an inner hexagonal groove, the inner part of the inner hexagonal groove is movably connected with an inner hexagonal block, the two sides of the inner hexagonal block are fixedly connected with side edge blocks, and the side edge blocks move in a channel. The internal hexagonal wrench is aligned with the jacked internal hexagonal block, external force is applied to enable the internal hexagonal wrench to press the internal hexagonal block downwards, the internal hexagonal wrench is twisted after entering the internal hexagonal groove, after the internal hexagonal wrench is taken out, the first reset spring conducts reset movement to enable the internal hexagonal block to be jacked up again, and the internal hexagonal block is flush with the top face of the screw body. In this way, dust and impurities are prevented from entering the inner hexagonal groove to affect use of the inner hexagonal wrench, and meanwhile under the condition that no inner hexagonal wrench exists, the extension plate is poked through the notch, and then the extension plate is poked to rotate so that the screw body can be driven to rotate as well.

Description

Technical Field

[0001] The utility model relates to the field of screws, and particularly relates to a hexagon socket head screw with high temperature resistance. Background Technique

[0002] The hexagon socket head screw is a common fastener, named after its head shape being a hexagon socket. The design of the hexagon socket head screw enables them to interact with a hexagon socket wrench, facilitating the installation and removal of the hexagon socket head screw. Their socket head shape provides a larger surface area, making the fastening more stable.

[0003] The existing Chinese patent application publication number: CN110513381A, discloses a hexagon socket external hexagon screw, including two parts: a screw rod and a nut. Its characteristics are: the screw rod and the nut are connected as a whole, and their axes coincide; the screw rod is a cylinder, and from the end away from the nut, there is a section of thread along the outer surface of the cylinder, or there is a thread along the entire length of the screw rod cylinder; the outer shape of the nut body is a regular hexagon, which is the external hexagon part of the nut; on the end plane of the nut away from the screw rod, there is a hexagon socket recess; the six faces of the hexagon socket recess of the nut of this hexagon socket external hexagon screw are respectively parallel to the six faces of the external hexagon of the nut, and the two regular hexagons inside and outside are concentric and their centers coincide with the central axis of the screw. This invention makes the torques obtained by the hexagon socket and the external hexagon of the screw similar when in use, resulting in the unexpected effect that wrenches can be used simultaneously inside and outside the screw, thereby doubling the torque and reducing the wear rate of the screw by 50%.

[0004] There are still some problems with the existing hexagon socket screws when in use: when the existing hexagon socket screws are in use, some impurities or dust usually accumulate inside the hexagon socket groove provided at the top, which makes it inconvenient for the subsequent matching between the hexagon socket wrench and the hexagon socket groove.

[0005] Therefore, it is very necessary to invent a hexagon socket head screw with high temperature resistance to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a hexagon socket head screw with high temperature resistance to solve the problem that when the existing hexagon socket screws are in use, some impurities or dust usually accumulate inside the hexagon socket groove provided at the top, which makes it inconvenient for the subsequent matching between the hexagon socket wrench and the hexagon socket groove as mentioned in the above background technique.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-temperature resistant hexagon socket pan head screw, comprising a screw body, a hexagon socket groove is arranged on the top of the screw body, a hexagon socket block is movably connected inside the hexagon socket groove, side blocks are fixedly connected on both sides of the hexagon socket block, the side blocks move inside the groove, the groove is connected to the hexagon socket groove, and the movement and stability of the hexagon socket block are ensured, a vertical rod is fixedly connected to the inner wall of the groove, the vertical rod passes through the inside of the side block, the side block and the groove are movably connected by a reset spring 1, and the subsequent reset movement of the hexagon socket block is ensured, a notch is arranged inside the hexagon socket block, an extension plate is movably connected inside the notch by a fixed rod, a movable groove is arranged inside the extension plate, a clamping block is movably connected inside the movable groove by a reset spring 2, the end of the clamping block matches the clamping groove, the clamping groove is connected to the notch, and a notch is arranged inside the extension plate to facilitate the extension plate to be unfolded.

[0008] Preferably, the thickness of the hexagonal block is smaller than the thickness of the hexagonal groove, so that after the hexagonal wrench presses down the hexagonal block, it can also match the hexagonal groove to complete the twisting of the screw body;

[0009] The outer wall of the hexagonal block is in contact with the inner wall of the hexagonal groove to achieve a sliding connection, and the top wall of the hexagonal block in the initial state is flush with the opening of the hexagonal groove, ensuring that impurities and dust cannot enter the interior of the hexagonal groove and do not affect the subsequent matching of the hexagonal wrench and the hexagonal groove.

[0010] Preferably, the return spring 1 is movably mounted on the outer ring of the vertical rod, and the two ends of the return spring 1 are respectively fixedly connected to the side block and the inner wall of the groove, and the return spring 1 is located inside the groove, and the hexagonal block pressed down can be reset by the return spring 1.

[0011] Preferably, the end side walls of the locking block that is always located in the movable groove are fixedly connected with protrusions, the locking block body is in a "T" shape, the outer walls of the locking block and the protrusion are in contact with the inner wall of the movable groove and are in sliding connection, thereby ensuring the stability of the locking block's movement inside the movable groove.

[0012] Preferably, one end of the locking block that is not provided with a protrusion is pointed, and the outer wall of the pointed end is installed in a fit with the inner wall of the locking groove, so that during the process of flipping the extension plate, the edges of the locking groove and the notch can well resist the pointed end of the locking block to promote the movement of the locking block.

[0013] Preferably, the two ends of the second reset spring are respectively fixedly connected to the inner wall of the movable groove and the end of the engaging block that is always in the movable groove, so as to facilitate the subsequent reset movement of the engaging block.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] The utility model aims the hexagonal wrench at the raised hexagonal block and applies external force so that the hexagonal wrench presses the hexagonal block downward, and the hexagonal wrench enters the inside of the hexagonal groove and twists it, and after the hexagonal wrench is taken out, the reset spring resets and makes the hexagonal block rise again, and the hexagonal block is flush with the top surface of the screw body, thus preventing dust and impurities from entering the inside of the hexagonal groove and affecting the use of the hexagonal wrench. At the same time, in the absence of the hexagonal wrench, the extension plate is moved through the notch, and then the rotation of the extension plate can also drive the rotation of the screw body, thereby achieving the effect of twisting the screw body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0018] Figure 2 This is a three-dimensional diagram of the overall structure of the hexagonal block of the utility model after being pressed down;

[0019] Figure 3 This is a three-dimensional diagram of the unfolded structure of the extension plate of the utility model;

[0020] Figure 4 This is a three-dimensional diagram of the internal structure of the extension plate (partially cut away) of the utility model;

[0021] Figure 5 It is an exploded view of the internal structure of the screw body (partially cut away) of the utility model.

[0022] Description of reference numerals:

[0023] 1. Screw body; 2. Hexagon socket groove; 3. Hexagon socket block; 4. Side block; 5. Channel; 6. Vertical rod; 7. Reset spring 1; 8. Notch; 9. Fixed rod; 10. Extension plate; 11. Movable groove; 12. Engagement block; 121. Protrusion; 13. Engagement groove; 14. Reset spring 2; 15. Notch. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] The utility model provides Figures 1-5 The high temperature resistant hexagon socket pan head screw shown in the figure comprises a screw body 1, a hexagon socket groove 2 is arranged on the top of the screw body 1, a hexagon socket block 3 is movably connected inside the hexagon socket groove 2, side blocks 4 are fixedly connected on both sides of the hexagon socket block 3, the side blocks 4 are movable inside the groove 5, the groove 5 is connected to the hexagon socket groove 2, and the movement and stability of the hexagon socket block 3 are ensured, the inner wall of the groove 5 is fixedly connected to a vertical rod 6, the vertical rod 6 passes through the inside of the side block 4, and the side block 4 and the groove 5 are connected by a reset spring. 7 realizes active connection to ensure the subsequent reset movement of the hexagonal block 3. The hexagonal block 3 is provided with a notch 8 inside. The inside of the notch 8 is movably connected with an extension plate 10 through a fixing rod 9. The inside of the extension plate 10 is provided with a movable groove 11. The inside of the movable groove 11 is movably connected with a clamping block 12 through a reset spring 14. The end of the clamping block 12 matches the clamping groove 13. The clamping groove 13 is connected with the notch 8. The inside of the extension plate 10 is provided with a notch 15 to facilitate the extension plate 10 to be unfolded.

[0026] The thickness of the hexagonal block 3 is smaller than the thickness of the hexagonal groove 2, so that after the hexagonal wrench presses down the hexagonal block 3, it can also match the hexagonal groove 2 to complete the torsion of the screw body 1;

[0027] The outer wall of the hexagonal block 3 is in contact with the inner wall of the hexagonal groove 2 to achieve a sliding connection, and the top wall of the hexagonal block 3 in the initial state is flush with the opening of the hexagonal groove 2, ensuring that impurities and dust cannot enter the interior of the hexagonal groove 2 and do not affect the subsequent matching of the hexagonal wrench and the hexagonal groove 2.

[0028] The return spring 7 is movably mounted on the outer ring of the vertical rod 6, and the two ends of the return spring 7 are respectively fixedly connected to the side block 4 and the inner wall of the groove 5. The return spring 7 is located inside the groove 5, and the return spring 7 can be used to reset the pressed hexagonal block 3.

[0029] The locking block 12 is always located in the movable groove 11, and the two side walls of the end thereof are fixedly connected with protrusions 121. The main body of the locking block 12 is in a "T" shape. The outer walls of the locking block 12 and the protrusion 121 are in contact with the inner wall of the movable groove 11 and are in sliding connection, thereby ensuring the stability of the locking block 12 in the movable groove 11.

[0030] One end of the locking block 12 which is not provided with the protrusion 121 is pointed, and the outer wall of the pointed end is installed in a fit with the inner wall of the locking groove 13. During the process of flipping the extension plate 10, the edge of the locking groove 13 and the notch 8 can well resist the pointed end of the locking block 12 to promote the movement of the locking block 12.

[0031] The two ends of the second reset spring 14 are respectively fixedly connected to the inner wall of the movable groove 11 and the end of the engaging block 12 that is always in the movable groove 11, so as to facilitate the subsequent reset movement of the engaging block 12.

[0032] Working principle: When using a high-temperature resistant hexagon socket pan head screw, first align the hexagon socket wrench with the raised hexagon socket block 3, apply external force to make the hexagon socket wrench press down the hexagon socket block 3, during which time the hexagon socket wrench enters the inside of the hexagon socket groove 2, and then twist the hexagon socket wrench to drive the hexagon socket screw body 1 to rotate to achieve the installation and removal of the screw body 1, after the hexagon socket wrench is taken out, the reset spring 7 resets and causes the hexagon socket block 3 to be lifted up again, and at this time the top of the hexagon socket block 3 is flush with the top surface of the screw body 1, thus preventing dust and impurities from entering the inside of the hexagon socket groove 2 and affecting the matching use of the hexagon socket wrench and the hexagon socket groove 2;

[0033] Subsequently, in the absence of an Allen wrench, the extension plate 10 is turned over and unfolded through the notch 15, and then the extension plate 10 is turned to rotate, which can also drive the screw body 1 to rotate, thereby achieving the effect of twisting the screw body 1, and then the extension plate 10 is turned over and stored in the notch 8. During the turning process of the extension plate 10, the extension plate 10 is connected to the rear edge of the notch 8 by the reset spring 2 14. At this time, the edge of the notch 8 blocks the In this case, the inclined surface of the sharp end of the locking block 12 pushes the locking block 12 toward the inside of the movable groove 11. Later, when the sharp end of the locking block 12 matches the position of the locking groove 13, the reset spring 14 applies an external force to the locking block 12 to push the sharp end of the locking block 12 to match the locking groove 13. At this time, the extension plate 10 is matched with the notch 8, and the top of the extension plate 10 is flush with the top surface of the hexagonal block 3. In this way, the extension plate 10 will not affect the subsequent use of the hexagonal block 3.

[0034] The screw body 1 is made of a high-temperature alloy material, which has good heat resistance and oxidation resistance and can maintain sufficient strength and stability in a high-temperature environment.

[0035] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A hexagon socket pan head screw resistant to high temperatures, comprising a screw body (1), characterized in that, The top of the screw body (1) is provided with a hexagonal socket (2), and a hexagonal block (3) is movably connected inside the hexagonal socket (2). Side blocks (4) are fixedly connected to both sides of the hexagonal block (3). The side blocks (4) move inside a channel (5), and the channel (5) communicates with the hexagonal socket (2). A vertical rod (6) is fixedly connected to the inner wall of the channel (5). The vertical rod (6) penetrates through the inside of the side block (4). The side block (4) and the channel (5) are movably connected by a first return spring (7). A notch (8) is provided inside the hexagonal block (3). An extension plate (10) is movably connected inside the notch (8) through a fixing rod (9). An activity groove (11) is provided inside the extension plate (10). A clamping block (12) is movably connected inside the activity groove (11) through a second return spring (14). The end of the clamping block (12) matches a clamping groove (13), and the clamping groove (13) communicates with the notch (8). A notch (15) is provided inside the extension plate (10).

2. The hexagon socket pan head screw with high temperature resistance according to claim 1, characterized in that, The thickness of the hexagonal block (3) is less than the thickness of the hexagonal socket (2); The outer wall of the hexagonal block (3) is in contact with and slidably connected to the inner wall of the hexagonal socket (2), and the top wall of the hexagonal block (3) in the initial state is flush with the opening of the hexagonal socket (2).

3. A hexagon socket button head screw with high temperature resistance according to claim 1, characterized in that, The first return spring (7) is movably sleeved on the outer circle of the vertical rod (6). The two end parts of the first return spring (7) are respectively fixedly connected to the side block (4) and the inner wall of the channel (5). The first return spring (7) is located inside the channel (5).

4. A hexagon socket button head screw resistant to high temperature according to claim 1, characterized in that, Convex blocks (121) are fixedly connected to the two side walls of the end part of the clamping block (12) that is always located inside the activity groove (11). The main body of the clamping block (12) is in a "T" shape. The outer walls of the clamping block (12) and the convex blocks (121) are in contact with and slidably connected to the inner wall of the activity groove (11).

5. A hexagon socket head cap screw with high temperature resistance according to claim 1, characterized in that, One end part of the clamping block (12) without the convex block (121) is in a sharp angle shape, and the outer wall of this sharp angle end part is fitted and installed with the inner wall of the clamping groove (13).

6. A hexagon socket pan head screw with high temperature resistance according to claim 1, characterized in that, The two end parts of the second return spring (14) are respectively fixedly connected to the inner wall of the activity groove (11) and the end part of the clamping block (12) that is always located inside the activity groove (11).

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