A special tool for loosening a screw

Abstract

The utility model discloses a special tool for screw loosening, include: connecting seat and counter -screw head, the connecting seat upper surface is provided with the shell, the counter -screw head detachable installation is in the shell inside, extension mechanism, extension mechanism sets up in the shell inside lower extreme, and counter -screw head and extension mechanism detachable connection, and counter -screw head passes through extension mechanism and the mutual approach or far away of connecting seat setting, auxiliary fixing mechanism, extension mechanism passes through auxiliary fixing mechanism and the shell fixed setting, and auxiliary fixing mechanism sets up in the shell outside, the utility model passes through the mutual cooperation of extension mechanism and auxiliary fixing mechanism, makes screw loosening tool suitable for using in different narrow space, to further improve the practicality of screw loosening tool.

Description

Technical Field

[0001] This utility model relates to a special tool, and more specifically, to a special tool for loosening screws. Background Technology

[0002] In daily maintenance work, we often encounter situations where screws are rusted and cannot be loosened. Using a screwdriver to remove them can easily damage the screw caps, making them impossible to remove. Therefore, in order to address screws with damaged screw caps and those that cannot be easily loosened, a reverse-threading screw tool has been developed on the market. It can use the principle of reverse threading to disassemble rusted screws or screws with damaged screw caps. However, existing technologies still have the following problems: First, because screws are generally used in confined spaces, workers cannot easily connect the reverse-threading screw tool to the screw cap that needs to be removed. Therefore, there are certain limitations and it cannot meet the current needs. Therefore, we propose a special tool for loosening screws. Utility Model Content

[0003] One objective of this utility model is to provide a new technical solution for a special tool for loosening screws.

[0004] According to a first aspect of this utility model, a special tool for loosening screws is provided, comprising: A connector and a reverse thread head are provided, wherein the upper surface of the connector is provided with a housing, and the reverse thread head is detachably installed inside the housing; An extension mechanism is provided inside the lower end of the housing, and the reverse thread head is detachably connected to the extension mechanism. The reverse thread head is positioned close to or far from the connecting seat through the extension mechanism. An auxiliary fixing mechanism is provided, wherein the extension mechanism is fixedly installed to the outer shell via the auxiliary fixing mechanism, and the auxiliary fixing mechanism is located on the outside of the outer shell.

[0005] Optionally, the extension mechanism includes an extension seat and a snap-fit ​​component. The upper end of the extension seat has a snap-fit ​​groove, and one end of the reverse thread head is snapped into the snap-fit ​​groove. The extension seat is fixedly mounted to the outer shell through the snap-fit ​​component.

[0006] Optionally, the snap-fit ​​component includes multiple sets of adjusting teeth and a fixing seat. The adjusting teeth are arranged at equal intervals from top to bottom. An adjusting groove is provided at the bottom of the extension seat. Multiple sets of adjusting teeth are symmetrically arranged on both sides inside the adjusting groove. The fixing seat is fixedly installed inside the housing. An avoidance hole is provided on the outer side of the extension seat, and the fixing seat is located inside the avoidance hole.

[0007] Optionally, the snap-fit ​​component further includes two sets of pressing rods, each set of pressing rods having a return spring fixedly installed at its opposite end. The return spring is fixedly connected to the fixed base. Limiting blocks are fixedly installed at the ends of the two sets of pressing rods that are close to each other. A limiting cavity is formed between two adjacent sets of adjusting teeth, and the limiting block is located inside the limiting cavity.

[0008] Optionally, the auxiliary fixing mechanism includes two sets of stabilizing slide plates. A stabilizing groove is provided at the upper end of the outer side of the housing. Both ends of the stabilizing slide plates are provided with irregularly shaped sliding grooves. The stabilizing slide plates are slidably installed inside the stabilizing grooves through the irregularly shaped sliding grooves.

[0009] Optionally, the auxiliary fixing mechanism further includes two sets of positioning clamps. Each of the two sets of positioning clamps has a threaded hole in the middle. A drive screw is threadedly connected inside the threaded hole. A rotating hole is opened in the center of the stabilizing slide plate. The drive screw passes through the rotating hole and a fastening nut is threadedly connected to the outside of the drive screw.

[0010] Optionally, guide rods are fixedly installed at both ends of one side of the stabilizing slide plate, and guide grooves are opened at both ends of one side of the positioning clamp plate, with one end of the guide rod slidably installed inside the guide groove.

[0011] According to one embodiment of this disclosure, the reverse threading head, through the design of the extension mechanism, can adjust the distance between the reverse threading head and the connecting seat, thereby facilitating the adjustment of the overall length of the screw loosening tool according to the position of the screw to be removed. This makes it easier for workers to connect the reverse threading head to the screw to be removed, thus further improving the practicality of the screw loosening tool. By designing an auxiliary fixing mechanism, the position of the reverse thread head after adjustment by the extension mechanism can be further fixed, preventing the return spring from loosening due to the centrifugal force generated by the rotation of the pressing rod during the rotation of the reverse thread head. Therefore, the stability of the reverse thread head after adjustment can be effectively improved. Secondly, the extension mechanism can be used as a pre-positioning extension, which facilitates the quick adjustment of the reverse thread head's position, and then the auxiliary fixing mechanism further fixes the reverse thread head.

[0012] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0013] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0014] Figure 1 This is a schematic diagram of the overall structure of a special tool for loosening screws in one embodiment; Figure 2 This is a schematic diagram of the connecting seat structure of a special tool for loosening screws in one embodiment; Figure 3 This is a schematic diagram of the extension seat structure of a screw loosening tool in one embodiment; Figure 4 One embodiment is a special tool for loosening screws. Figure 3 A magnified structural diagram at point A; Figure 5 This is a schematic diagram of an auxiliary fixing mechanism for a special tool for loosening screws in one embodiment.

[0015] The following are marked in the diagram: 1. Connecting seat; 2. Reverse thread head; 3. Housing; 4. Extension mechanism; 5. Auxiliary fixing mechanism; 6. Connecting rod; 401. Pressing rod; 402. Fixing seat; 403. Adjusting teeth; 404. Limiting block; 405. Return spring; 406. Extension seat; 501. Irregular groove; 502. Stabilizing slide plate; 503. Positioning clamp; 504. Drive screw; 505. Threaded hole; 506. Fastening nut; 507. Guide rod. Detailed Implementation

[0016] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0017] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0018] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0019] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0020] like Figures 1 to 5 As shown, a special tool for loosening screws includes: Connector 1 and reverse thread head 2, the upper surface of connector 1 is provided with housing 3, and reverse thread head 2 can be detachably installed inside housing 3; Extension mechanism 4 is located inside the lower end of housing 3, and reverse thread head 2 is detachably connected to extension mechanism 4. Reverse thread head 2 is positioned close to or far from connecting seat 1 through extension mechanism 4. The auxiliary fixing mechanism 5 and the extension mechanism 4 are fixedly installed to the outer shell 3 through the auxiliary fixing mechanism 5, and the auxiliary fixing mechanism 5 is located on the outside of the outer shell 3.

[0021] like Figures 1 to 5 As shown, through the design of the extension mechanism 4, the working end of the reverse thread head 2 is moved further away from the tool handle, which makes it easier to use in narrow spaces where it is not convenient for workers to reach their hands, thereby improving the practicality of the screw loosening tool. Secondly, the design of the auxiliary fixing mechanism 5 can further enhance the stability of the reverse thread head 2 after the extension distance, and prevent the reverse thread head 2 from becoming loose after rotation through the connecting seat 1; It should be noted that the connecting seat 1 in this application is used to connect with the motor output shaft key, so that the connecting seat 1 can drive the reverse thread head 2 to rotate, thereby achieving the screw loosening work.

[0022] Furthermore, the extension mechanism 4 includes an extension seat 406 and a snap-fit ​​component. The upper end of the extension seat 406 is provided with a snap-fit ​​groove, and one end of the reverse thread head 2 is snapped into the snap-fit ​​groove. The extension seat 406 is fixedly set to the outer shell 3 through the snap-fit ​​component. like Figures 1 to 5 As shown, by means of the design that one end of the reverse thread head 2 is engaged inside the engagement groove, the extension seat 406 can be replaced with different reverse thread heads 2 according to different screws that need to be removed.

[0023] Furthermore, the snap-fit ​​component includes multiple sets of adjusting teeth 403 and a fixing seat 402. The adjusting teeth 403 are arranged at equal intervals from top to bottom. An adjusting groove is opened at the bottom of the extension seat 406. Multiple sets of adjusting teeth 403 are symmetrically arranged on both sides inside the adjusting groove. The fixing seat 402 is fixedly installed inside the outer shell 3. An avoidance hole is opened on the outer side of the extension seat 406, and the fixing seat 402 is located inside the avoidance hole. The snap-fit ​​component also includes two sets of pressing rods 401. A return spring 405 is fixedly installed at the opposite end of the two sets of pressing rods 401. The return spring 405 is fixedly connected to the fixing seat 402. A limit block 404 is fixedly installed at the end of the two sets of pressing rods 401 that are close to each other. A limit cavity is formed between the two adjacent sets of adjusting teeth 403. The limit block 404 is located inside the limit cavity. like Figures 1 to 5 As shown, an adjustment cavity is formed between two adjacent sets of adjustment teeth 403 located on the same horizontal line, and the limiting block 404 can slide into the adjustment cavity.

[0024] like Figures 1 to 5As shown, through the design of the limiting block 404 and the two sets of pressing rods 401, when it is necessary to adjust the position of the reverse thread head 2, by pressing the two sets of pressing rods 401, the two sets of pressing rods 401 are brought closer to each other, and the limiting block 404 is driven to disengage from the limiting cavity and enter the adjustment cavity. Then the reverse thread head 2 can be slid to the desired position. Therefore, adjusting the reverse thread head 2 by pressing can achieve quick adjustment, improve the adjustment efficiency of the reverse thread head 2, and thus improve the efficiency of the screw loosening tool and pre-work preparation.

[0025] Furthermore, the auxiliary fixing mechanism 5 includes two sets of stabilizing slide plates 502. A stabilizing groove is provided at the upper end of the outer side of the outer shell 3. Both ends of the stabilizing slide plate 502 are provided with irregularly shaped sliding grooves 501. The stabilizing slide plate 502 is slidably installed inside the stabilizing groove through the irregularly shaped sliding grooves 501. The auxiliary fixing mechanism 5 also includes two sets of positioning clamps 503. Both sets of positioning clamps 503 are provided with threaded holes 505 in the middle. A drive screw 504 is threadedly connected inside the threaded hole 505. A rotating hole is provided at the center of the stabilizing slide plate 502. The drive screw 504 passes through the rotating hole, and a fastening nut 506 is threadedly connected to the outside of the drive screw 504. like Figures 1 to 5 As shown, the design of the stabilizing slide plate 502 slidingly installed inside the sliding groove through the irregular sliding groove 501 allows the positioning clamp 503 to be aligned with the lower part of the reverse thread head 2 for docking. This facilitates the positioning clamp 503 to further reinforce and adjust the stability of the reverse thread head 2, preventing the reverse thread head 2 from becoming loose during rotation.

[0026] Secondly, the design of the fastening nut 506 integrates the drive screw 504 and the stabilizing slide plate 502, which indirectly makes the positioning clamp 503 more stable through the stabilizing slide plate 502, thereby effectively improving the stability of the reverse thread head 2 during use.

[0027] Furthermore, guide rods 507 are fixedly installed at both ends of one side of the stabilizing slide plate 502, and guide grooves are opened at both ends of one side of the positioning clamp plate 503. One end of the guide rod 507 is slidably installed inside the guide groove. like Figures 1 to 5 As shown, the guide rod 507 is slidably installed inside the sliding groove at one end, so that during the rotation of the drive screw 504, the two sets of positioning clamps 503 can stably approach each other and clamp the reverse thread head 2, preventing the positioning clamps 503 from shaking.

[0028] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A special tool for loosening screws, characterized in that: include: Connecting seat (1) and reverse thread head (2), the upper surface of the connecting seat (1) is provided with a housing (3), and the reverse thread head (2) is detachably installed inside the housing (3); The extension mechanism (4) is located at the lower end of the inner shell (3), and the reverse thread head (2) is detachably connected to the extension mechanism (4). The reverse thread head (2) is located close to or far from the connecting seat (1) through the extension mechanism (4). The auxiliary fixing mechanism (5) is used to fix the extension mechanism (4) to the outer shell (3), and the auxiliary fixing mechanism (5) is located on the outside of the outer shell (3).

2. The special tool for loosening screws according to claim 1, characterized in that: The extension mechanism (4) includes an extension seat (406) and a snap-fit ​​component. The upper end of the extension seat (406) is provided with a snap-fit ​​groove. One end of the reverse thread head (2) is snapped into the snap-fit ​​groove. The extension seat (406) is fixedly set to the outer shell (3) through the snap-fit ​​component.

3. The special tool for loosening screws according to claim 2, characterized in that: The snap-fit ​​component includes multiple sets of adjusting teeth (403) and a fixing seat (402). The adjusting teeth (403) are arranged at equal intervals from top to bottom. The bottom of the extension seat (406) is provided with an adjusting groove. Multiple sets of adjusting teeth (403) are symmetrically arranged on both sides inside the adjusting groove. The fixing seat (402) is fixedly installed inside the outer shell (3). The outer side of the extension seat (406) is provided with a clearance hole, and the fixing seat (402) is located inside the clearance hole.

4. The special tool for loosening screws according to claim 3, characterized in that: The snap-fit ​​component also includes two sets of pressing rods (401). Each set of pressing rods (401) has a return spring (405) fixedly installed at its opposite end. The return spring (405) is fixedly connected to the fixed seat (402). Each set of pressing rods (401) has a limit block (404) fixedly installed at one end close to the other. A limit cavity is formed between two adjacent sets of adjusting teeth (403). The limit block (404) is located inside the limit cavity.

5. A special tool for loosening screws according to claim 4, characterized in that: The auxiliary fixing mechanism (5) includes two sets of stabilizing slide plates (502). A stabilizing groove is provided at the upper end of the outer side of the outer shell (3). A shaped sliding groove (501) is provided at both ends of the stabilizing slide plate (502). The stabilizing slide plate (502) is slidably installed inside the stabilizing groove through the shaped sliding groove (501).

6. A special tool for loosening screws according to claim 5, characterized in that: The auxiliary fixing mechanism (5) also includes two sets of positioning clamps (503). Each of the two sets of positioning clamps (503) has a threaded hole (505) in the middle. A drive screw (504) is connected inside the threaded hole (505) by a thread. A rotating hole is opened in the center of the stabilizing slide plate (502). The drive screw (504) passes through the rotating hole and a fastening nut (506) is connected to the outside of the drive screw (504) by a thread.

7. A special tool for loosening screws according to claim 6, characterized in that: Guide rods (507) are fixedly installed at both ends of one side of the stabilizing slide plate (502), and guide grooves are opened at both ends of one side of the positioning clamp (503). One end of the guide rod (507) is slidably installed inside the guide groove.

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