Screw fastening device with visual tightening torque

Abstract

The utility model relates to the technical field of tools, in particular to a tightening torque visualized screw fastening device which comprises a tightening torque visualized screw fastening device body, and a convenient-to-replace assembly is arranged at one end of the tightening torque visualized screw fastening device body. According to the screw fastening device with the visual tightening torque, the screw fastening head and the fastening connecting sleeve block are detachably mounted, so that the screw fastening head can be conveniently replaced, the screw fastening device body with the visual tightening torque is more suitable for more screw models, the cost is saved, and meanwhile, the screw fastening device with the visual tightening torque is more convenient to use. The operation and the use by people are more convenient; the electric telescopic rod is used for driving the limiting block to contract, so that the limiting block is far away from the limiting groove, people can conveniently separate the screw fastening head from the fastening connecting sleeve block by applying downward pulling force to the screw fastening head, and therefore the screw fastening head of another model can be replaced, operation is easy, and replacement is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of tool technology, and in particular to a screw fastening device that visualizes tightening torque. Background Technology

[0002] A screw is a tool that uses the physical and mathematical principles of the inclined plane, circular rotation, and friction to gradually tighten objects and machine parts; screw is a general term for fasteners and is a common colloquial term; screws are an indispensable industrial necessity in daily life, and tightening screws requires the use of torque visualization fastening devices.

[0003] A torque preset mechanism for a torque wrench is disclosed in patent CN2445866Y. This patent includes a wrench head, a wrench handle, a force-applying sleeve, and a connecting pin. The neck pin forms the torque wrench. When the adjusting handwheel is pulled back, a steel ball inserted into the transverse hole on the outer circumference of the front end of the adjusting handwheel enters groove D of the screw shaft. Simultaneously, the torque transmission shaft at the tail end of the adjusting screw shaft enters the groove on the inner end face of the tail of the adjusting handwheel. Rotating the adjusting handwheel then drives the screw shaft to rotate, causing the scale seat mounted on the front section of the screw shaft to move axially (guided by a guide pin in groove B). The ruler seat forces the thrust retaining ring forward, compressing the spring and achieving the preset torque value. Simultaneously, the main scale mounted on the ruler seat reflects the torque value. Once the required torque value is reached, the adjusting handwheel is pushed into the sleeve, the steel ball enters groove D, and the small shaft disengages from the groove. At this point, it is in a disengaged state. When the adjusting ruler seat moves forward, when it reaches a certain position, the limit pin' will collide with the guide pin, restricting the ruler seat from moving further forward. Conversely, it restricts the ruler seat from moving backward, thus limiting over-operation beyond the wrench's torque value range and preventing accidental damage to the spring. However, the following problems still exist in this patent:

[0004] The torque wrench mentioned above uses a fixed type of screw head and can only tighten screws of a single type. When encountering different types of screws, different torque wrenches need to be used, which is wasteful of costs and inconvenient for users.

[0005] To address the above issues, a screw fastening device with visualized tightening torque needs to be designed to overcome these problems. Utility Model Content

[0006] The main purpose of this utility model is to provide a screw fastening device with visualized tightening torque, which can effectively solve the problems in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A screw fastening device with visualized tightening torque includes a main body for the screw fastening device with visualized tightening torque, and one end of the main body is provided with a component that is easy to replace.

[0009] The replaceable component includes a connecting sleeve block disposed at one end of the main body of the torque-visible screw fastening device. A sealing ring is embedded between the connecting sleeve block and the main body of the torque-visible screw fastening device. A torque connector is disposed at one end of the connecting sleeve block, and a fastening connecting sleeve block is disposed inside the torque connector. A rotating indicator disk is installed on the upper side of the fastening connecting sleeve block, and a screw fastening head is installed on the lower side of the fastening connecting sleeve block. Circular grooves are respectively opened on both sides of the inner wall of the fastening connecting sleeve block. One end of a first spring is disposed inside one end of the circular groove, and a connecting block is disposed at the other end of the first spring. Limit grooves are respectively opened on both sides of the connecting block. A hemispherical locking block is disposed on the outer wall of one end of the connecting block. Locking grooves are respectively opened on both sides of the screw fastening head, and vertical grooves are respectively opened on both sides of the locking grooves.

[0010] As a preferred embodiment of this utility model, an electric telescopic rod is provided inside the vertical groove, a second spring is sleeved on the outer wall of the electric telescopic rod, a limit block is provided at one end of the electric telescopic rod, four sets of vertical grooves are provided, four sets of limit blocks are provided, two sets of slots are provided, and two sets of hemispherical blocks are provided.

[0011] As a preferred embodiment of this utility model, a visual display screen and an operation key are installed in the middle of the main body of the tightening torque visualization screw fastening device, and the visual display screen is located to the left of the operation key. A protective shell for the visual display screen is installed on the outer wall of the visual display screen and the operation key, and a protective shell is embedded in the outer wall of the protective shell for the visual display screen.

[0012] As a preferred embodiment of this utility model, the connecting sleeve block is fixedly installed between itself and the main body of the tightening torque visualization screw fastening device, the torque connector is detachably installed between itself and the connecting sleeve block, the rotating indicator disk is detachably installed between itself and the fastening connecting sleeve block, and the fastening connecting sleeve block is fixedly installed between itself and the torque connector.

[0013] As a preferred embodiment of this utility model, the screw fastening head and the fastening connecting sleeve are detachably installed, one end of the first spring is fixedly connected to the circular groove, the other end of the first spring is fixedly connected to the connecting block, the connecting block is fixedly connected to the hemispherical locking block, and the hemispherical locking block is movably engaged with the locking groove.

[0014] As a preferred embodiment of this utility model, one end of the electric telescopic rod is fixedly installed between it and the vertical groove, the other end of the electric telescopic rod is fixedly connected between it and the limiting block, the limiting block is engaged with the limiting groove, and the second spring is movably sleeved with the electric telescopic rod.

[0015] As a preferred embodiment of this utility model, the visual display screen and the main body of the tightening torque visual screw fastening device are electrically connected via a battery, the operation key and the main body of the tightening torque visual screw fastening device are electrically connected via a wire, and the protective shell of the visual display screen is snapped together with the protective shell.

[0016] Beneficial effects

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In this utility model, a screw fastening device with visualized tightening torque is designed. The screw fastening head and the fastening connecting sleeve are detachable and installable, which facilitates the replacement of the screw fastening head. This increases the applicability of the main body of the screw fastening device with visualized tightening torque to more screw models, thereby saving costs and making it easier for people to operate and use.

[0019] 2. In this utility model, a screw fastening device with visualized tightening torque is designed. An electric telescopic rod drives the limit block to retract, so that the limit block moves away from the limit groove. By applying a downward pulling force to the screw fastening head, it is easy to separate the screw fastening head from the fastening connecting sleeve block, so that other types of screw fastening heads can be replaced. The operation is simple and the replacement is more convenient. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main body of the screw fastening device with visualized tightening torque according to this utility model;

[0021] Figure 2 This is a front sectional view of the screw fastening head and fastening connecting sleeve of this utility model.

[0022] Figure 3 This is a structural schematic diagram of part A of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the protective shell for the visual display screen of this utility model;

[0024] Figure 5 This is an exploded structural diagram of the connecting sleeve block and torque connector of this utility model.

[0025] In the diagram: 1. Main body of the screw fastening device with visualized tightening torque; 2. Protective housing; 3. Protective housing for the visualized display screen; 4. Visualized display screen; 5. Operation key; 6. Sealing ring; 7. Connecting sleeve; 8. Torque connector; 9. Rotating indicator; 10. Easy-to-replace components; 11. Screw fastening head; 12. Fastening connecting sleeve; 13. Circular groove; 14. First spring; 15. Slot; 16. Hemispherical locking block; 17. Connecting block; 18. Limiting groove; 19. Vertical groove; 20. Electric telescopic rod; 21. Second spring; 22. Limiting block. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] like Figure 1-5 As shown, a screw fastening device with visualized tightening torque includes a main body 1 of the screw fastening device with visualized tightening torque, and a component 10 for easy replacement is provided at one end of the main body 1 of the screw fastening device with visualized tightening torque.

[0028] The component 10 for easy replacement includes a connecting sleeve 7 disposed at one end of the main body 1 of the torque visualization screw fastening device. A sealing ring 6 is embedded between the connecting sleeve 7 and the main body 1 of the torque visualization screw fastening device. A torque connector 8 is disposed at one end of the connecting sleeve 7. A fastening connecting sleeve 12 is disposed inside the torque connector 8. A rotating indicator 9 is installed on the upper side of the fastening connecting sleeve 12. A screw fastening head 11 is installed on the lower side of the fastening connecting sleeve 12. Circular grooves 13 are respectively opened on both sides of the inner wall of the fastening connecting sleeve 12. One end of a first spring 14 is disposed at one end of the inner wall of the circular groove 13. A connecting block 17 is disposed at the other end of the first spring 14. Limit grooves 18 are respectively opened on both sides of the connecting block 17. A hemispherical locking block 16 is disposed on the outer wall of one end of the connecting block 17. A locking groove 15 is respectively opened on both sides of the screw fastening head 11. Vertical grooves 19 are respectively opened on both sides of the locking groove 15.

[0029] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3As shown, an electric telescopic rod 20 is installed inside the vertical groove 19. A second spring 21 is sleeved on the outer wall of the electric telescopic rod 20. A limit block 22 is provided at one end of the electric telescopic rod 20. A visual display screen 4 and an operation key 5 are installed in the middle of the main body 1 of the tightening torque visualization screw fastening device, and the visual display screen 4 is located to the left of the operation key 5. A visual display screen protective shell 3 is installed on the outer wall of the visual display screen 4 and the operation key 5. A protective shell 2 is embedded in the outer wall of the visual display screen protective shell 3. The connecting sleeve 7 is fixedly installed between the tightening torque visualization screw fastening device main body 1. The torque connector 8 is detachably installed between the connecting sleeve 7 and the rotating indicator 9 is detachably installed between the fastening connecting sleeve 12 and the torque connector 8. The screw fastening head 11 is fixedly installed between the screw fastening head 11 and the fastening connecting sleeve 12. The sleeve blocks 12 are detachably installed. One end of the first spring 14 is fixedly connected to the circular groove 13, and the other end of the first spring 14 is fixedly connected to the connecting block 17. The connecting block 17 is fixedly connected to the hemispherical locking block 16, and the hemispherical locking block 16 is movably locked to the locking groove 15. One end of the electric telescopic rod 20 is fixedly installed to the vertical groove 19, and the other end of the electric telescopic rod 20 is fixedly connected to the limiting block 22. The limiting block 22 is locked to the limiting groove 18. The second spring 21 is movably sleeved to the electric telescopic rod 20. The visual display screen 4 is electrically connected to the main body 1 of the tightening torque visual screw fastening device via a battery. The operation key 5 is electrically connected to the main body 1 of the tightening torque visual screw fastening device via a wire. The visual display screen protective shell 3 is locked to the protective shell 2.

[0030] Among them, the electric telescopic rod 20 is activated by operating key 5, so that the limit block 22 retracts into the vertical groove 19 by a stroke of 5mm, thereby releasing the lock on the limit groove 18;

[0031] Among them, the rotating indicator 9 automatically calibrates the zero point, and the visual display screen 4 displays the "READY" status, so the tightening operation can begin;

[0032] After replacement, the electric telescopic rod 20 is reset, and the limit block 22 is engaged in the limit groove 18 under the action of the second spring 21 to ensure mechanical interlocking.

[0033] The working process of this utility model is as follows: Using the tightening torque visualization screw fastening device designed in this solution, during operation, by installing a battery in the main body 1 of the tightening torque visualization screw fastening device, and pressing the operation button 5, the main body 1 of the tightening torque visualization screw fastening device can be started. By aligning the screw fastening head 11 with the screw to be tightened, the tightening operation can be performed. During the tightening process, the torque value is visualized on the display screen 4, making it convenient to use. When tightening different types of screws, the screw fastening head 11 needs to be replaced. By pressing the button on the operation button 5 to control the extension and retraction of the electric telescopic rod 20, the command to retract the electric telescopic rod 20 is given, which can drive four sets of electric telescopic rods 20 to simultaneously drive the limit block 22 at one end. The screw head 11 is retracted into the vertical groove 19. At this time, by pulling down the screw fastening head 11, the hemispherical locking block 16 can be separated from the groove 15 by the elastic force of the first spring 14, thus removing the screw fastening head 11. After replacing it with a different type of screw fastening head 11, one end of it is inserted into the fastening connecting sleeve 12. While inserting, the hemispherical locking block 16 is squeezed, causing the first spring 14 to retract. When the groove 15 corresponds to the circular groove 13, the rebound force of the first spring 14 locks the hemispherical locking block 16 into the groove 15. By operating the operation key 5, the electric telescopic rod 20 is extended, so that the limiting block 22 at one end is locked into the limiting groove 18 for limiting, thus completing the replacement of the screw fastening head 11. The structure is simple and easy for people to use.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screw fastening device with visualized tightening torque, comprising a main body (1) of the screw fastening device with visualized tightening torque, characterized in that: One end of the main body (1) of the tightening torque visualization screw fastening device is provided with a component (10) that is easy to replace. The replaceable component (10) includes a connecting sleeve (7) disposed at one end of the main body (1) of the torque visualization screw fastening device. A sealing ring (6) is fitted between the connecting sleeve (7) and the main body (1) of the torque visualization screw fastening device. A torque connector (8) is disposed at one end of the connecting sleeve (7). A fastening connecting sleeve (12) is disposed inside the torque connector (8). A rotating indicator disk (9) is mounted on the upper side of the fastening connecting sleeve (12). A screw fastening head (1) is mounted on the lower side of the fastening connecting sleeve (12). 1) The inner wall of the fastening connecting sleeve (12) is provided with circular grooves (13) on both sides respectively. One end of the first spring (14) is provided inside the circular groove (13), and the other end of the first spring (14) is provided with a connecting block (17). Limiting grooves (18) are provided on both sides of the connecting block (17). A hemispherical locking block (16) is provided on the outer wall of one end of the connecting block (17). The screw fastening head (11) is provided with locking grooves (15) on both sides respectively. Vertical grooves (19) are provided on both sides of the locking grooves (15).

2. The screw fastening device for visualizing tightening torque according to claim 1, characterized in that: An electric telescopic rod (20) is provided inside the vertical groove (19). A second spring (21) is sleeved on the outer wall of the electric telescopic rod (20). A limit block (22) is provided at one end of the electric telescopic rod (20). The vertical groove (19) has four sets of openings. The limit block (22) has four sets of openings. The slot (15) has two sets of openings. The hemispherical block (16) has two sets of openings.

3. The screw fastening device for visualizing tightening torque according to claim 1, characterized in that: The main body (1) of the tightening torque visualization screw fastening device is equipped with a visualization display screen (4) and an operation key (5) in the middle, and the visualization display screen (4) is located to the left of the operation key (5). The outer wall of the visualization display screen (4) and the operation key (5) is equipped with a visualization display screen protective shell (3), and the outer wall of the visualization display screen protective shell (3) is fitted with a protective shell (2).

4. The screw fastening device for visualizing tightening torque according to claim 1, characterized in that: The connecting sleeve (7) is fixedly installed between the main body (1) of the tightening torque visualization screw fastening device, the torque connector (8) is detachably installed between the connecting sleeve (7), the rotating indicator (9) is detachably installed between the fastening connecting sleeve (12), and the fastening connecting sleeve (12) is fixedly installed between the torque connector (8).

5. The screw fastening device for visualizing tightening torque according to claim 1, characterized in that: The screw fastening head (11) and the fastening connecting sleeve (12) are detachably installed. One end of the first spring (14) is fixedly connected to the circular groove (13), and the other end of the first spring (14) is fixedly connected to the connecting block (17). The connecting block (17) is fixedly connected to the hemispherical locking block (16), and the hemispherical locking block (16) is movably engaged with the locking groove (15).

6. The screw fastening device for visualizing tightening torque according to claim 2, characterized in that: One end of the electric telescopic rod (20) is fixedly installed between the vertical groove (19), the other end of the electric telescopic rod (20) is fixedly connected between the limiting block (22), the limiting block (22) is engaged with the limiting groove (18), and the second spring (21) is movably sleeved between the electric telescopic rod (20).

7. The screw fastening device for visualizing tightening torque according to claim 3, characterized in that: The visualization display screen (4) is electrically connected to the main body (1) of the tightening torque visualization screw fastening device via a battery. The operation key (5) is electrically connected to the main body (1) of the tightening torque visualization screw fastening device via a wire. The protective shell (3) of the visualization display screen is snapped together with the protective shell (2).

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