CN210903251U - Bending type knife handle structure capable of being locked and rotating 360 degrees - Google Patents

Abstract

The utility model relates to a bending type handle of a knife structure that can lock and rotate 360 degrees, including handle of a knife and first lock nut, the handle of a knife includes back handle pole, the preceding handle pole that parallels with back handle pole, sets up the down tube between back handle pole and preceding handle pole, and the head end of preceding handle pole is provided with cylindric extension post, and the tip of extension post is provided with the double-screw bolt; one side of the first locking nut is provided with a first round hole for the extension column to pass in and out, the other side of the first locking nut is provided with a first screw hole matched with the stud, the joint of the extension column and the stud is arranged in the first round hole, and the stud is in threaded connection with the first screw hole. When the bent type cutter handle structure is used, the cutter head can be adjusted and locked at any angle within the range of 0-360 degrees; the bent type knife handle structure is convenient to use, convenient to adjust the direction of the cutting edge of the knife head, convenient to hold by hands of a user and good in implementation effect.

Description

Bending type knife handle structure capable of being locked and rotating 360 degrees

Technical Field

The utility model relates to a can lock and 360 rotatory crooked type handle of a knife structures of degree.

Background

In a neurosurgical knife commonly used in a surgical operation, for example, a neurosurgical operation, a knife head (a blade) is movably connected with a knife handle, the knife handle is generally in a long rod shape, and the knife handle is in threaded connection with the knife head. However, the current neurosurgical scalpel has the following defects in the use process: because the handle is in a shape of a straight line, the sight line is easily blocked by the front end of the handle in the operation process, and a doctor needs to swing the head to bypass the blocking area, which is not beneficial to finishing the operation efficiently for a long time; in addition, the straight-line-shaped knife handle is relatively awkward to operate in the process of applying force up and down or left and right, does not conform to the principle of human engineering, is inconvenient to adjust the cutting edge direction, and is poor in user experience.

SUMMERY OF THE UTILITY MODEL

The utility model discloses not enough to prior art exists, provide a can lock and 360 degrees rotatory crooked type handle of a knife structures, concrete technical scheme as follows:

a bending type knife handle structure capable of being locked and rotating 360 degrees comprises a knife handle and a first locking nut, wherein the knife handle comprises a rear handle rod, a front handle rod parallel to the rear handle rod and an inclined rod arranged between the rear handle rod and the front handle rod, one end of the inclined rod is fixedly connected with the head end of the rear handle rod, and the other end of the inclined rod is fixedly connected with the tail end of the front handle rod; the head end of the front handle rod is provided with a cylindrical extension column, and the end part of the extension column is provided with a stud; a first round hole for the extension column to pass in and out is formed in one side of the first locking nut, a first screw hole matched with the stud is formed in the other side of the first locking nut, and the first screw hole is communicated with the first round hole; the connecting part of the extension column and the screw column is arranged in the first round hole, the screw column is in threaded connection with the first screw hole, and the end part of the screw column is arranged outside the first locking nut.

As an improvement of the technical scheme, an included angle between the inclined rod and the rear handle rod is 125 degrees, and an included angle between the inclined rod and the front handle rod is 125 degrees.

As an improvement of the technical scheme, the extension column is in clearance fit with the first round hole.

As an improvement of the technical scheme, the cross-sectional area of the extension column is smaller than that of the front handle rod.

As the improvement of the technical scheme, the outer side wall of the head part of the rear handle rod is provided with a knurled structure.

The utility model discloses a bent handle structure can realize the adjustment and locking of the tool bit in the arbitrary angle within the range of 0-360 degrees in the use process; the bending type knife handle structure is convenient to use, convenient to adjust the direction of the cutting edge of the knife head, convenient to hold by hands of a user and good in implementation effect.

Drawings

Fig. 1 is a schematic structural view of a neurosurgical knife of the present invention;

FIG. 2 is a schematic structural view of the knife handle of the present invention;

FIG. 3 is a schematic view of the connection between the tool holder and the tool bit of the present invention;

FIG. 4 is a schematic view of the structure of the bending type tool holder capable of locking and rotating 360 degrees according to the present invention;

fig. 5 is a schematic structural view of the first lock nut of the present invention;

fig. 6 is a schematic view of the connection between the tool bit and the second lock nut of the present invention;

fig. 7 is a schematic structural view of the cutter head of the present invention;

fig. 8 is a schematic diagram of the working time of the bending type tool holder structure capable of locking and rotating 360 degrees.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 5, the bending type handle structure capable of locking and rotating 360 degrees comprises a lightning handle and a first locking nut 20, the handle comprises a rear handle 11, a front handle 12 parallel to the rear handle 11, and an inclined rod 13 arranged between the rear handle 11 and the front handle 12, one end of the inclined rod 13 is fixedly connected with the head end of the rear handle 11, and the other end of the inclined rod 13 is fixedly connected with the tail end of the front handle 12; the head end of the front handle rod 12 is provided with a cylindrical extension column 121, the end part of the extension column 121 is provided with a stud 122, and the stud 122, the extension column 121 and the front handle rod 12 are all coaxially arranged; a first round hole 21 for the extension column 121 to enter and exit is formed in one side of the first locking nut 20, a first screw hole 22 matched with the stud 122 is formed in the other side of the first locking nut 20, and the first screw hole 22 is communicated with the first round hole 21; the joint of the extension column 121 and the stud 122 is arranged inside the first round hole 21, the stud 122 is in threaded connection with the first screw hole 22, and the end of the stud 122 is arranged outside the first lock nut 20. Further, the cross-sectional area of the extension post 121 is smaller than that of the front stem 12. The maximum diameter of the stud 122 is smaller than the diameter of the extension post 121.

As shown in fig. 1, 3, 6, and 7, the tail of the tool bit 30 is a round bar, a second locking nut 40 is sleeved on the outer side of the tail of the tool bit 30, a second round hole matched with the tail of the tool bit 30 is arranged on one side of the second locking nut 40, a second screw hole 41 matched with the stud 122 is arranged on the other side of the second locking nut 40, the second screw hole 41 and the second round hole are coaxially arranged, and the second screw hole 41 and the second round hole are communicated to form a through hole structure. The tool bit 30 and the second locking nut 40 are fixedly mounted through interference fit between the tail of the tool bit 30 and the second round hole.

The connection method of the knife handle and the knife head 30 is as follows: the stud 122 is first inserted into the first circular hole 21, and then the stud 122 is screwed into the first threaded hole 22 until the end of the stud 122 is drilled out of the first threaded hole 22 so that the end of the stud 122 is disposed outside the first lock nut 20, as shown in fig. 4. The end of the stud 122 is then threaded into the second threaded hole 41 until the first locking nut 20 and the second locking nut 40 abut against each other, thus completing the locking action, as shown in fig. 3. As can be seen from fig. 3, since the length of the exposed portion of the stud 122 from the first lock nut 20 is adjustable, after the stud 122 is screwed with the second lock nut 40 from the exposed portion of the first lock nut 20, the tool bit 30 can be adjusted and locked at any angle within a range of 0 to 360 ° by rotating the second lock nut 40 and the first lock nut 20 with reference to the tool holder.

Further, in order to facilitate the insertion of the extension column 121 into the first circular hole 21, a clearance fit is formed between the extension column 121 and the first circular hole 21.

Further, the included angle between the inclined rod 13 and the rear handle rod 11 is 125 °, and the included angle between the inclined rod 13 and the front handle rod 12 is 125 °.

Further, for convenient holding, the outer side wall of the head part of the rear handle 11 is provided with a knurled structure 111. The knurled structure 111 can increase the frictional force of the grip.

In the embodiment, the lightning-shaped knife handle is convenient to hold firstly, the front end is arranged at the lower part, the rear end is arranged at the upper part, the operation is facilitated, and the visual field is wider than that of a straight knife handle; however, if the tool holder is designed as an integral structure, the tool holder has the disadvantage of inconvenient direction adjustment, and the direction adjustment process can interfere with other structures because the tool holder of the integral structure rotates circularly with the radius of the bending part during the direction adjustment. In the utility model, due to the threaded connection, the tool bit 30 can rotate 360 degrees relative to the tool holder, so that the direction of the cutting edge of the tool bit 30 can be conveniently adjusted, and the tool is convenient for a user to use; therefore, the rotation angle of the cutting head 30 is adjusted to make up for the defects of the integrated knife handle, and the operation is convenient to carry out. The first locking nut 20 and the second locking nut 40 are matched to complete the locking between the tool bit 30 and the tool shank. The handle is designed into a lightning shape according to the principle of human engineering, and is convenient to hold. The curved design of the shank also has the advantage of not obstructing the field of view of the microscope during operation. As shown in FIG. 8, the view of the surgeon under the microscope is shown, therefore, the hand-held portion is designed to have a curved shape to ensure that the surgeon does not block the view of the surgeon during the operation under the microscope.

The bent knife handle structure of the utility model is convenient to adjust the direction of the cutting edge in a fixed holding mode; compared with the existing long rod-shaped knife handle, the existing knife handle is in a fixed holding mode, and the operation of adjusting the direction of the cutting edge is inconvenient.

Crooked type handle of a knife structure can realize the adjustment and the locking of tool bit 30 at 0 ~ 360 arbitrary angle of within range through rotatory first lock nut 20, second lock nut 40, tool bit 30 when handheld handle of a knife in the use. The bent type knife handle structure is convenient to use, convenient to adjust the direction of the cutting edge of the knife head 30, convenient to hold by hands of a user and good in implementation effect.

In the present embodiment, for convenience of description, the cutting head 30 is a surgical cutting head in neurosurgery; can lock and 360 rotatory crooked type handle of a knife structure of degree not only can be applied to neurosurgery, still can be applied to fields such as otolaryngology branch of academic or vocational study.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (5)

1. The utility model provides a can lock and 360 degrees rotatory crooked type handle of a knife structures which characterized in that: the novel screwdriver comprises a screwdriver handle and a first locking nut (20), wherein the screwdriver handle comprises a rear handle rod (11), a front handle rod (12) parallel to the rear handle rod (11), and an inclined rod (13) arranged between the rear handle rod (11) and the front handle rod (12), one end of the inclined rod (13) is fixedly connected with the head end of the rear handle rod (11), and the other end of the inclined rod (13) is fixedly connected with the tail end of the front handle rod (12); the head end of the front handle rod (12) is provided with a cylindrical extension column (121), and the end part of the extension column (121) is provided with a stud (122); a first round hole (21) for the extension column (121) to pass in and out is formed in one side of the first locking nut (20), a first screw hole (22) matched with the stud (122) is formed in the other side of the first locking nut (20), and the first screw hole (22) is communicated with the first round hole (21); the connecting part of the extension column (121) and the stud (122) is arranged inside the first round hole (21), the stud (122) is in threaded connection with the first screw hole (22), and the end part of the stud (122) is arranged outside the first locking nut (20).

2. A lockable and 360 degree rotatable curved handle structure according to claim 1, in which: the included angle between the inclined rod (13) and the rear handle rod (11) is 125 degrees, and the included angle between the inclined rod (13) and the front handle rod (12) is 125 degrees.

3. A lockable and 360 degree rotatable curved handle structure according to claim 1, in which: the extension column (121) is in clearance fit with the first round hole (21).

4. A lockable and 360 degree rotatable curved handle structure according to claim 1, in which: the cross-sectional area of the extension column (121) is smaller than that of the front handle bar (12).

5. A lockable and 360 degree rotatable curved handle structure according to claim 1, in which: the outer side wall of the head part of the rear handle rod (11) is provided with a knurled structure (111).

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