Bendable screwdriver

Abstract

The utility model relates to the technical field of screwdrivers, in particular to a bendable screwdriver which comprises a double-ratchet handle, the double-ratchet handle is connected with a universal flexible shaft, a double-head screwdriver head is hinged to the end, away from the double-ratchet handle, of the universal flexible shaft, a limiting cylinder is arranged at the end, away from the double-ratchet handle, of the universal flexible shaft in a sleeved mode, and the limiting cylinder is connected with the double-head screwdriver head in a sleeved mode. A reset spring is arranged between the limiting barrel and the universal flexible shaft, the universal flexible shaft is connected with a limiting rod for limiting the moving direction and distance of the limiting barrel, the problem that a screwdriver works in a narrow space and a position where operation is not easy is solved, the screwdriver head is convenient to replace, the screwdriver head can be prevented from falling off, and the screwdriver is convenient to use and high in practicability. The screwdriver has a wide application prospect in the technical field of screwdrivers.

Description

Technical Field

[0001] The utility model relates to the technical field of screwdrivers, in particular to a bendable screwdriver. Background Art

[0002] Screwdrivers used in the market can be roughly divided into two categories: manual screwdrivers and electric screwdrivers. The most commonly used in people's lives are manual screwdrivers. Manual screwdrivers require users to manually rotate the screwdriver rod to achieve the purpose of removing or tightening screws. Most of the manual screwdrivers currently used are ordinary flat-blade screwdrivers or plum-shaped screwdrivers. The obvious disadvantage is that they are not adaptable. In construction with narrow space, they cannot be bent, making it inconvenient to remove screws. In addition, for different types of bolts, it is not possible to quickly and conveniently switch between flat-blade screwdrivers or plum-shaped screwdrivers. Therefore, a screwdriver that solves the above problems is needed. Utility Model Content

[0003] A bendable screwdriver is invented to solve the problem that most of the manual screwdrivers used before are ordinary flat-blade screwdrivers or plum-shaped screwdrivers, which have obvious disadvantages of poor adaptability, cannot be bent during construction in a narrow space, making it inconvenient to remove screws, and cannot quickly and conveniently switch flat-blade screwdrivers or plum-shaped screwdrivers for different types of bolts.

[0004] The technical solution of the utility model is that it includes a double ratchet handle, wherein the double ratchet handle is connected to a universal flexible shaft, a double-headed screwdriver head is hinged on one end of the universal flexible shaft away from the double ratchet handle, a limiting cylinder is sleeved on one end of the universal flexible shaft away from the double ratchet handle, a reset spring is provided between the limiting cylinder and the universal flexible shaft, and a limiting rod is connected to the universal flexible shaft for limiting the moving direction and distance of the limiting cylinder.

[0005] Preferably, a rotation groove is formed at one end of the universal flexible shaft away from the double ratchet handle, and the double-headed screwdriver head is rotatably connected in the rotation groove via a rotation shaft.

[0006] Preferably, a limit groove connected to the rotating groove is provided on the universal flexible shaft, and a limit block corresponding to the limit groove is fixed on the inner end surface of the limit cylinder, constituting a structure in which the limit block moves from the rotating groove into the limit groove to unlock the double-headed screwdriver head, and moves from the limit groove into the rotating groove to limit the double-headed screwdriver head.

[0007] Preferably, the vertical cross-section of the limit block is T-shaped, so that a groove structure is formed between the limit block and the inner wall of the limit cylinder, and one end of the return spring is arranged in the groove mechanism.

[0008] Preferably, an inner wall of the limiting cylinder is provided with a placement groove, and the return spring is arranged in the placement groove.

[0009] Preferably, a limit rod is provided in the universal flexible shaft, one end of the limit rod extends into the accommodating groove, and one end of the return spring abuts against the limit rod.

[0010] Preferably, a guide groove is provided in the placement groove, and one end of the limit rod extends into the guide groove.

[0011] The following beneficial effects can be achieved by adopting the technical solution of the utility model: (1) the double ratchet handle makes it easier to rotate the screwdriver, making it easier and more labor-saving to remove the screws; (2) the universal flexible shaft makes it possible for the screwdriver head to be bent 360 degrees, making it easier for the screwdriver to operate in a narrow space; (3) the double-headed screwdriver head, the rotating shaft, and the limit cylinder make it easier to select different screwdriver heads according to different screws, and to replace the screwdriver heads; (4) the limit block makes it easier to limit the double-headed screwdriver head in the rotating groove, preventing the double-headed screwdriver head from automatically rotating and affecting the disassembly and assembly of the screws; (5) the reset spring and the limit rod make it easier to provide elastic force to the limit cylinder, so that after the double-headed screwdriver head is converted, the limit cylinder limits the double-headed screwdriver head only under the elastic force of the reset spring; the technical solution of the utility model has broad application prospects in the field of screwdriver technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front view of the working state of the flexible screwdriver of the utility model.

[0013] Figure 2 This is a front view of the state of the conversion screwdriver head of the flexible screwdriver of the utility model.

[0014] Figure 3 This is a cross-sectional view of the limit block and limit cylinder structure of the utility model.

[0015] Among them, 1. universal flexible shaft, 2. rotating groove, 3. rotating shaft, 4. double-headed screwdriver head, 5. limiting cylinder, 6. limiting block, 7. limiting groove, 8. placement groove, 9. reset spring, 10. limiting rod, 11. guide groove, 12. lighting lamp. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions of various embodiments of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0017] In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0018] The double ratchet handle is a common two-way ratchet screwdriver handle on the market. It makes it easy to rotate the screwdriver head through the double ratchet handle, which makes it easier to disassemble and install screws, making it more convenient and labor-saving to remove screws.

[0019] The universal flexible shaft 1 is a common flexible connecting shaft on the market. By connecting with a double ratchet handle, the universal flexible shaft 1 can be driven to rotate by turning the double ratchet handle. At the same time, the 360° adjustable feature of the universal flexible shaft 1 is utilized to facilitate inserting the screwdriver head into a narrow working environment to disassemble and install screws.

[0020] The double-headed screwdriver head 4 is rotatably connected to the rotating groove 2 opened at one end of the universal flexible shaft 1 away from the double ratchet handle through the rotating shaft 3, so that the double-headed screwdriver head 4 can rotate in the rotating groove 2 with the rotating shaft 3 as the axis, thereby realizing the replacement of the flat screwdriver head and the plum screwdriver head. When one end of the double-headed screwdriver head 4 is in the rotating groove 2, the other end partially protrudes out of the rotating groove 2, which is convenient for disassembling and assembling the screw through the part of the double-headed screwdriver head 4 that exceeds the rotating groove 2. The two ends of the double-headed screwdriver head 4 are magnetic, which is convenient for adsorbing the screws, and then convenient for disassembling and assembling the screws.

[0021] The limiting cylinder 5 is sleeved on the end of the universal flexible shaft 1 away from the double ratchet handle, so as to limit the part of the double-headed screwdriver head 4 that rotates into the rotating groove 2, thereby preventing the double-headed screwdriver head 4 from rotating when removing the screw, thereby affecting the removal of the screw.

[0022] The limit block 6 has a T-shaped vertical section, and one end is welded to the limit cylinder 5 or detachably connected by bolts, so that the limit block 6 and the limit cylinder 5 are connected together to achieve simultaneous movement. The other end of the limit block 6 extends to the rotation groove 2, and when one end of the double-headed screwdriver head 4 rotates into the rotation groove 2, the limit cylinder 5 is lowered, and the limit block 6 contacts the double-headed screwdriver head 4, so that the double-headed screwdriver head 4 is further limited by the limit block 6 to prevent the double-headed screwdriver head 4 from continuing to rotate in the rotation groove 2.

[0023] The limiting groove 7 is provided on the universal flexible shaft 1 and is connected with the rotating groove 2, so that when the limiting cylinder 5 drives the limiting block 6 to move, the limiting block 6 can rotate from the rotating groove 2 to the limiting groove 7, thereby realizing the release of the double-headed screwdriver head 4 in the rotating groove 2 by the limiting cylinder 5, thereby facilitating the rotation of the double-headed screwdriver head 4; when the limiting block 6 moves from the limiting groove 7 to the rotating groove 2, the double-headed screwdriver head 4 is limited to avoid the rotation of the double-headed screwdriver head 4.

[0024] A reset spring 9 and an inner wall of the limit cylinder 5 are provided with an accommodation groove 8, in which the reset spring 9 is arranged, and one end of the reset spring 9 is inserted into a groove structure formed between the limit block 6 and the inner wall of the limit cylinder 5, so that the reset spring 9 provides elastic force for the limit cylinder 5, so that the limit cylinder 5 always covers the outside of the universal flexible shaft 1 out of the rotating groove 2 only under the elastic force of the reset spring 9 to limit the double-headed screwdriver head 4 in the rotating groove 2.

[0025] The limiting rod 10 is arranged in the universal flexible shaft 1 and is located in the universal flexible shaft 1 at one end of the limiting groove 7 away from the rotating groove 2. One end of the limiting rod 10 extends into the placement groove 8, and one end of the reset spring 9 conflicts with the limiting rod 10, and then the other end of the reset spring 9 is limited by the limiting rod 10, so that when the limiting cylinder 5 drives the limiting block 6 to move in the limiting groove 7, the reset spring 9 is in a compressed state, which is convenient for the reset spring 9 to push the limiting cylinder 5 to return to its original position after rotating the double-headed screwdriver head 4.

[0026] The guide groove 11 is provided in the receiving groove 8, and one end of the limit rod 10 is also in the guide groove 11, so that the moving direction and distance of the limit cylinder 5 are limited by the limit rod 10 being slidably connected in the guide groove 11, so that the limit cylinder 5 can only move a certain distance along the length direction of the universal flexible shaft 1, thereby preventing the limit cylinder 5 from rotating relative to the universal flexible shaft 1.

[0027] The illuminating lamp 12 is composed of LED lamp beads, and the universal flexible shaft 1 of the mounting seat is away from one end of the double ratchet handle, so that the illuminating lamp 12 can be used to illuminate the working surface, which is convenient for disassembling and installing screws in a narrow space. The double ratchet handle is provided with a switch and a battery electrically connected to the illuminating lamp 12 through a conductive slip ring, so that the illuminating lamp 12 can be controlled by the switch, and the illuminating lamp 12 is provided with power by the battery.

[0028] Unless otherwise specified, the device elements involved in the above embodiments are all conventional device elements, and the structural settings, working modes or control modes involved are all conventional settings, working modes or control modes in the art unless otherwise specified.

[0029] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model, deformation and improvement can be made, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A bendable screwdriver comprising a double ratchet handle, characterized in that: The double ratchet handle is connected to a universal flexible shaft (1); a double-headed screwdriver head (4) is hingedly connected to one end of the universal flexible shaft (1) away from the double ratchet handle; a limiting cylinder (5) is sleeved on one end of the universal flexible shaft (1) away from the double ratchet handle; a return spring (9) is provided between the limiting cylinder (5) and the universal flexible shaft (1); and a limiting rod (10) for limiting the moving direction and distance of the limiting cylinder (5) is connected to the universal flexible shaft (1).

2. The bendable screwdriver according to claim 1, characterized in that: A rotation groove (2) is formed at one end of the universal flexible shaft (1) away from the double ratchet handle, and the double-headed screwdriver head (4) is rotationally connected in the rotation groove (2) via a rotation shaft (3).

3. The bendable screwdriver according to claim 1, characterized in that: The universal flexible shaft (1) is provided with a limit groove (7) connected to the rotation groove (2), and the inner end surface of the limit cylinder (5) is fixed with a limit block (6) corresponding to the limit groove (7), so that the limit block (6) moves from the rotation groove (2) into the limit groove (7) to unlock the double-headed screwdriver head (4), and moves from the limit groove (7) into the rotation groove (2) to limit the double-headed screwdriver head (4).

4. The bendable screwdriver according to claim 3, characterized in that: The vertical cross-section of the limit block (6) is T-shaped, so that a groove structure is formed between the limit block (6) and the inner wall of the limit cylinder (5), and one end of the return spring (9) is arranged in the groove structure.

5. The bendable screwdriver according to claim 1, characterized in that: The inner wall of the limiting cylinder (5) is provided with a placement groove (8), and the return spring (9) is arranged in the placement groove (8).

6. The bendable screwdriver according to claim 5, characterized in that: A limit rod (10) is provided inside the universal flexible shaft (1), one end of the limit rod (10) extends into the placement groove (8), and one end of the return spring (9) abuts against the limit rod (10).

7. The bendable screwdriver according to claim 5, characterized in that: A guide groove (11) is provided in the placement groove (8), and one end of the limit rod (10) extends into the guide groove (11).

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