CN217040269U - Screw driver - Google Patents

Abstract

The utility model relates to a bottle opener, bottle opener include connecting rod and bottle opener head, and the bottle opener head includes interconnect's linkage segment and gets the nail section, and the linkage segment is connected in the connecting rod, follows the first direction, gets the cross sectional area of nail section on the plane of the first direction of perpendicular to and reduces gradually, and the first direction is the directional direction of getting the nail section of linkage segment. Foretell bottle opener sets up to follow the first direction through the structure of getting the nail section, get the cross sectional area of nail section on the plane of perpendicular to first direction and reduce gradually, in the use of bottle opener, get the nail section through the regulation and stretch into the degree of depth in screw or hole plug along the first direction, make and get the section of nail section on the plane of perpendicular to first direction and can adapt to the screw or the hole plug of multiple not unidimensional, adopt a bottle opener just can install the screw or the hole plug of multiple not unidimensional promptly, the application scope of bottle opener is wide, do not need often to be changed, the operation flow of operation process has been simplified.

Description

Screw driver

Technical Field

The application relates to the technical field of medical equipment, in particular to a screwdriver.

Background

During the surgical operation, a plurality of screws or hole plugs with different sizes are often needed to be used, drivers are generally adopted to install the screws or the hole plugs, but because each driver can only be adapted to the screw or the hole plug with a certain size, a plurality of different drivers are needed to be prepared before the operation so as to be selected according to the size of the screw or the hole plug, and the operation process is complicated.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a screwdriver to solve the problem that a plurality of different screwdrivers are required to be prepared before operation so as to be selected according to the size of the screw or the hole plug, which results in a complicated operation process.

The embodiment of the application provides a bottle opener, including connecting rod and bottle opener head, the bottle opener head includes interconnect's linkage segment and gets the nail section, and the linkage segment is connected in the connecting rod, follows the first direction, gets the cross sectional area of nail section on the plane of the first direction of perpendicular to and reduces gradually, and the first direction is the directional direction of getting the nail section of linkage segment.

In one embodiment, the staple removing section comprises a body part and a plurality of flanges which are arranged by protruding from the outer wall surface of the body part; along the first direction, the section area of the body part on a plane perpendicular to the first direction is gradually reduced; and/or the cross-sectional area of the flange in a plane perpendicular to the first direction decreases gradually along the first direction.

In one embodiment, the body portion is configured to be cylindrical; the plurality of flanges are arranged in an annular array around the outer wall surface of the body part, and the cross-sectional area of the flanges on a plane perpendicular to the first direction is gradually reduced along the first direction.

In one embodiment, the body portion is configured to be frustoconical; the plurality of flanges are arranged in an annular array around the outer wall surface of the body portion, the cross-sectional area of the body portion on a plane perpendicular to the first direction is gradually reduced along the first direction, and the cross-sectional area of the flanges on the plane perpendicular to the first direction is kept unchanged.

In one embodiment, the taper of the body portion is 2.5.

In one embodiment, the flange has an edge that is disposed to project away from the body portion.

In one embodiment, the flange has an arcuate surface projecting away from the body portion.

In one embodiment, the screwdriver further comprises a universal joint, one end of the universal joint is rotatably connected to the connecting rod around a first axis, the screwdriver head is rotatably connected to the other end of the universal joint around a second axis, and the first axis and the second axis are perpendicular to each other.

In one embodiment, the screw driver further comprises a first elastic sheet, a first groove is formed in one end, connected with the connecting rod, of the universal joint, and the first elastic sheet is arranged in the first groove and clamped between the connecting rod and the universal joint.

In one embodiment, the screwdriver further comprises a second elastic sheet, a second groove is formed in one end, connected with the screwdriver head, of the universal joint, and the second elastic sheet is arranged in the second groove and clamped between the universal joint and the screwdriver head.

Based on this application embodiment's bottle opener, set the directional direction of getting the nail section of linkage segment into first direction, through the structure that will get the nail section sets up to follow first direction, it reduces gradually to get the cross sectional area of nail section on the plane of perpendicular to first direction, so, in the use of bottle opener, through adjusting the degree of depth of getting the nail section and stretching into screw or hole stopper along first direction, make and get the section of nail section on the plane of perpendicular to first direction and can be adapted to the screw or the hole stopper of multiple not unidimensional, adopt a bottle opener just can install the screw or the hole stopper of multiple not unidimensional promptly, the application scope of bottle opener is wide, do not need often to change, the operation flow of operation process has been simplified.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Moreover, like reference numerals are used to refer to like elements throughout. In the drawings:

fig. 1 is a schematic view of the overall structure of a driver provided in an embodiment of the present application;

FIG. 2 is a schematic view of an overall structure of a screwdriver head according to an embodiment of the present application;

FIG. 3 is a cross-sectional view of the overall structure of a staple removing section provided in accordance with one embodiment of the present application;

FIG. 4 is a schematic view of a configuration of a staple removing section engaged with a workpiece according to an embodiment of the present application;

FIG. 5 is a schematic cross-sectional view of a staple removing segment taken perpendicular to a first direction according to one embodiment of the present application;

FIG. 6 is a schematic view of a fitting structure of a staple removing section and a workpiece according to another embodiment of the present application;

FIG. 7 is a schematic cross-sectional view of a staple removing segment taken perpendicular to a first direction according to another embodiment of the present application;

fig. 8 is an exploded structural schematic view of a gimbal, a first elastic piece, and a second elastic piece according to an embodiment of the present disclosure.

The reference numbers in the detailed description are as follows:

10: a screwdriver;

100: a connecting rod;

200: screwdriver head, 210: connection section, 220: nail taking section, 221: a body portion, 222: flange, 222 a: edge, 222 b: a cambered surface;

300: gimbal, 310: first axis, 320: second axis, 330: first groove, 340: a second groove;

400: a first spring plate;

500: a second elastic sheet;

600: a workpiece to be installed;

a: a first direction.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiment in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and therefore the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The screw or the hole plug with various sizes are often required to be used in the surgical operation process, a screwdriver is usually adopted to install the screws or the hole plugs, a screwdriver head extends into an installation hole of the screws or the hole plugs, and after the screwdriver head is abutted and fixed with the inner wall of the installation hole, the screwdriver is rotated to complete installation of the screws or the hole plugs. However, since the size of the screwdriver head is fixed, each screwdriver can only be adapted to a screw or a hole plug of a certain size, and therefore, a plurality of different screwdrivers are required to be selected according to the size of the screw or the hole plug before the operation, which results in a complicated operation process.

Fig. 1 is a schematic overall structure diagram of a driver 10 provided in an embodiment of the present application, fig. 2 is a schematic overall structure diagram of a driver head 200 provided in an embodiment of the present application, fig. 3 is a cross-sectional overall structure diagram of a staple taking section 220 provided in an embodiment of the present application, and fig. 4 is a schematic matching structure diagram of the staple taking section 220 and a workpiece provided in an embodiment of the present application.

In order to at least partially solve the above problem, please refer to fig. 1 to 4, the present application provides a driver 10, wherein the driver 10 includes a connecting rod 100 and a driver head 200. The screwdriver head 200 comprises a connecting section 210 and a nailing section 220 which are connected with each other, wherein the connecting section 210 is connected with the connecting rod 100, the section area of the nailing section 220 on a plane vertical to the first direction a is gradually reduced along the first direction a, and the first direction a is the direction of the connecting section 210 pointing to the nailing section 220.

The connecting rod 100 is a portion of the screwdriver 10 convenient for holding or connecting, and during the use of the screwdriver 10, the connecting rod 100 can be held by hand to directly operate the screwdriver 10, or the connecting rod 100 can be mounted on an external tool, such as a ratchet handle, to indirectly operate the screwdriver 10, so as to achieve the effects of saving labor, changing the force direction, and the like. The connecting rod 100 is rod-shaped, and for the convenience of holding, the connecting rod 100 may be provided in a cylindrical shape, and the size of the connecting rod may be adjusted according to the actual application, and is not limited herein.

The driver head 200 is a portion of the driver 10 for engaging with a screw or a plug waiting for installation of the workpiece 600, and specifically, the driver head 200 includes a connecting section 210 and a staple removing section 220 connected to each other. Wherein, linkage segment 210 sets up in the one side that is close to connecting rod 100, and linkage segment 210 directly or indirectly connects in connecting rod 100, and according to the difference of connected mode, linkage segment 210's structure also can be inequality, for example, when linkage segment 210 welds on connecting rod 100, linkage segment 210's structure is unlimited, when linkage segment 210 passes through the round pin hub connection on connecting rod 100, is equipped with the shaft hole etc. that is used for the installation round pin axle on linkage segment 210. The nail taking section 220 is disposed on one side far away from the connecting rod 100, and the nail taking section 220 can extend into the mounting hole of the workpiece 600 to be mounted and is abutted and fixed with the inner wall of the mounting hole, so that the workpiece 600 to be mounted can be mounted by means of the screwdriver 10.

The direction of the screwdriver head 200 from the connecting section 210 to the staple removing section 220 is set to be a first direction a, and the cross-sectional area of the staple removing section 220 on a plane perpendicular to the first direction a is gradually reduced along the first direction a. The section of the staple removing section 220 in a plane perpendicular to the first direction a, i.e. during use of the driver 10, the section where the nail taking section 220 is fixedly abutted against the inner wall of the mounting hole in the workpiece 600 to be mounted has, since in the first direction a, this cross-sectional area is gradually reduced, that is, unlike the driver 10 in the related art, the size of the cross-sectional area where the driver 10 in the embodiment of the present application is fixed in abutment with the inner wall of the mounting hole on the workpiece 600 to be mounted is not fixed, but gradually reduced in the first direction a, and therefore, in the use process of the screw driver 10, as shown in fig. 4, if the aperture of the mounting hole on the workpiece 600 to be mounted is relatively large, the nail taking section 220 can be matched with the mounting hole of the workpiece 600 to be mounted by using the portion with the large cross-sectional area on the plane perpendicular to the first direction a, so as to realize the abutting fixation of the workpiece 600 to be mounted. If the aperture of the mounting hole on the workpiece 600 to be mounted is relatively small, the portion, with a small cross-sectional area, of the nail taking section 220 on the plane perpendicular to the first direction a can be used to match with the mounting hole of the workpiece 600 to be mounted, so as to achieve the abutting fixation of the workpiece 600 to be mounted.

The direction that the screw taking section 220 is pointed by the connecting section 210 of the screw driver 10 is set as a first direction a, the structure of the screw taking section 220 is set to be along the first direction a, and the sectional area of the screw taking section 220 on a plane perpendicular to the first direction a is gradually reduced, so that in the use process of the screw driver 10, the depth of the screw taking section 220 extending into a screw or a hole plug along the first direction a is adjusted, so that the section of the screw taking section 220 on the plane perpendicular to the first direction a can be suitable for screws or hole plugs of various sizes, namely, the screws or hole plugs of various sizes can be installed by one screw driver 10, the application range of the screw driver 10 is wide, frequent replacement is not needed, and the operation flow of the operation process is simplified.

Moreover, compared with the scheme that the same part on the nail taking section 220 is always adopted by the screwdriver 10 in the related art to be matched with the workpiece 600 to be installed in the using process of the screwdriver 10, the embodiment of the application can be matched with the workpiece 600 to be installed by utilizing different parts on the nail taking section 220, so that under the condition that the same number of workpieces 600 to be installed are installed, the degree of wear of the screwdriver 10 in the embodiment of the application is relatively small, the degree of wear of different positions on the nail taking section 220 is more uniform, and the durability of the screwdriver 10 is improved.

In order to better achieve abutting fixation with the workpiece 600 to be installed, please continue to refer to fig. 2 to 3, in some embodiments, optionally, the staple removing section 220 includes a body portion 221 and a plurality of flanges 222 protruding from an outer wall surface of the body portion 221. Along the first direction a, the sectional area of the body part 221 on a plane perpendicular to the first direction a is gradually reduced; and/or the cross-sectional area of the flange 222 in a plane perpendicular to the first direction a gradually decreases along the first direction a.

The flanges 222 are protruded from the outer wall surface of the body 221, wherein the body is used for roughly positioning the nail taking section 220 in the using process, so as to increase the overall stability of the nail taking part, the flanges 222 are used for being abutted and fixed with the inner wall of the mounting hole on the workpiece 600 to be mounted, a groove matched with the shape of the flange 222 can be arranged in the mounting hole of the workpiece 600 to be mounted, and the flange 222 and the groove are matched with each other. Since the cross-sectional area of the staple removing section 220 in the first direction a is gradually reduced in the plane perpendicular to the first direction a, in this case, the cross-sectional area of the main body portion in the plane perpendicular to the first direction a is gradually reduced, while the cross-sectional area of the flange 222 in the plane perpendicular to the first direction a is kept constant, or the cross-sectional area of the main body portion in the plane perpendicular to the first direction a is kept constant, while the cross-sectional area of the flange 222 in the plane perpendicular to the first direction a is gradually reduced, or both the cross-sectional areas of the main body portion and the flange 222 in the plane perpendicular to the first direction a are gradually reduced, which can be achieved by the above solutions.

Illustratively, in some embodiments, optionally, the body portion 221 is configured to be cylindrical; the plurality of flanges 222 are arranged in an annular array around the outer wall surface of the body portion 221, and the cross-sectional area of the flanges 222 in a plane perpendicular to the first direction a is gradually reduced along the first direction a. The cross-sectional shape of the cylindrical body portion 221 in a plane perpendicular to the first direction a is circular, and the diameter of the circle along the first direction a remains unchanged, that is, the cross-sectional area of the body portion 221 remains unchanged. Therefore, the cross-sectional area of the flange 222 on the plane perpendicular to the first direction a is gradually reduced, so that the cross-sectional area of the staple removing section 220 on the plane perpendicular to the first direction a is gradually reduced, and the processing and forming of the body portion 221 are facilitated, and the flange 222 is also conveniently arranged.

Exemplarily, in other embodiments, optionally, the body portion 221 is configured to be truncated cone-shaped; the plurality of flanges 222 are arranged in an annular array around the outer wall surface of the body portion 221, and along the first direction a, the cross-sectional area of the body portion 221 in a plane perpendicular to the first direction a is gradually reduced, and the cross-sectional area of the flanges 222 in a plane perpendicular to the first direction a is kept constant. The circular truncated cone is a geometric body surrounded by a curved surface formed by rotating a straight line where a waist of the right trapezoid is perpendicular to a bottom side serves as a rotation axis and the remaining sides rotate, so that the cross-sectional shape of the circular truncated cone-shaped body portion 221 on a plane perpendicular to the first direction a is circular, and the diameter of the circular truncated cone-shaped body portion 221 is gradually reduced along the first direction a due to a certain taper, and therefore the cross-sectional area of the body portion 221 on the plane perpendicular to the first direction a is also gradually reduced. Meanwhile, the cross-sectional area of the flange 222 on the plane perpendicular to the first direction a is kept constant, so that the effect of gradually reducing the cross-sectional area of the staple taking section 220 on the plane perpendicular to the first direction a can be achieved, and the processing and forming of the flange 222 are more convenient.

On the basis of the above embodiment, since the main body 221 is configured to be in the shape of a circular truncated cone, and the ratio of the diameter difference between the upper and lower base circles of the circular truncated cone to the height of the circular truncated cone is the taper of the circular truncated cone, in some embodiments, the taper of the main body 221 is 2.5. That is, the ratio of the difference between the cross-sectional diameter of the main body 221 at the end near the connection section 210 in the first direction a and the cross-sectional diameter at the end near the connection section 210 to the length dimension of the main body 221 in the first direction a is 2.5. The body portion 221 satisfying the above conditions can be applied to a variety of different sizes of workpieces 600 to be mounted within a certain range.

Fig. 5 is a schematic cross-sectional view of the staple removing section 220 perpendicular to the first direction a according to an embodiment of the present application.

In the staple removing section 220, the flange 222 is used to abut against and fix an inner wall of a mounting hole on the workpiece 600 to be mounted, specifically, a side of the flange 222 facing away from the main body 221 directly contacts with the inner wall of the mounting hole on the workpiece 600 to be mounted, so as to please refer to fig. 2 to 5 together, in some embodiments, optionally, the flange 222 has an edge 222a protruding in a direction away from the main body 221.

Since the flange 222 has the edge 222a protruding away from the body 221, the nail removing section 220 abuts against the inner wall of the mounting hole of the workpiece 600 to be mounted by means of the edge 222a on the flange 222 during the use of the driver 10, so as to fix the workpiece 600 to be mounted. Meanwhile, a groove matched with the shape of the flange 222 can be further formed in the mounting hole of the workpiece 600 to be mounted, and the flange 222 is matched with the groove, so that the side wall surface of the flange 222 connected with the edge 222a is simultaneously abutted and matched with the outer wall surface of the groove of the workpiece 600 to be mounted.

Fig. 6 is a schematic view of a fitting structure of a staple removing segment 220 and a workpiece according to another embodiment of the present application, and fig. 7 is a schematic cross-sectional view of the staple removing segment 220 perpendicular to a first direction a according to another embodiment of the present application.

On the other hand, referring to fig. 6 to 7 in combination with fig. 2 and fig. 3, in other embodiments, optionally, the flange 222 has an arc surface 222b protruding away from the body portion 221.

Since the flange 222 has the arc face 222b protruding away from the body 221, the nail-taking section 220 abuts against the inner wall of the mounting hole on the workpiece 600 to be mounted by means of the arc face 222b on the flange 222 during the use of the driver 10, so as to fix the workpiece 600 to be mounted. Meanwhile, a groove matched with the shape of the flange 222 can be further formed in the mounting hole of the workpiece 600 to be mounted, and the flange 222 is matched with the groove, so that the cambered surface 222b on the flange 222 is simultaneously in abutting fit with the outer wall surface of the groove of the workpiece 600 to be mounted.

Fig. 8 is an exploded structural schematic view of the gimbal 300, the first resilient sheet 400, and the second resilient sheet 500 according to an embodiment of the present disclosure.

In order to make the screwdriver 10 more flexible when in use, so as to improve the applicable scope of the screwdriver 10, please refer to fig. 8 in combination with fig. 1 to fig. 2, in some embodiments, optionally, the screwdriver 10 further includes a universal joint 300, one end of the universal joint 300 is rotatably connected to the connecting rod 100 around a first axis 310, the screwdriver head 200 is rotatably connected to the other end of the universal joint 300 around a second axis 320, and the first axis 310 and the second axis 320 are perpendicular to each other.

In the present embodiment, the universal joint 300 is provided in the driver 10, the driver head 200 is connected to the connecting rod 100 by means of the universal joint 300, since one end of the universal joint 300 is rotatably connected to the connecting rod 100 about the first axis 310, the driver head 200 can rotate together with the universal joint 300 about the first axis 310 with respect to the connecting rod 100, so that the driver head 200 has a rotational degree of freedom in one direction, and at the same time, the driver head 200 is rotatably connected to the other end of the universal joint 300 about the second axis 320, so that the driver head 200 can also rotate about the second axis 320 with respect to the universal joint 300 and the connecting rod 100, and the first axis 310 is perpendicular to the second axis 320, so that the driver head 200 has a rotational degree of freedom in the other direction, so that the driver head 200 can rotate in two directions with respect to the connecting rod 100, thereby achieving a universal rotation effect, and greatly increasing the degree of flexibility of the driver 10 in use, the user can adjust the angle of the screwdriver head 200 flexibly on the premise of not changing the setting direction of the connecting rod 100, so that the screwdriver head is suitable for different applicable scenes, and is more convenient to use.

On the basis of the above embodiments, the screwdriver head 200 can rotate in two directions relative to the connecting rod 100, so as to achieve the effect of universal rotation, and in order to reduce the unnecessary shaking that may occur to the screwdriver head 200 during the use of the screwdriver 10, in some embodiments, optionally, the screwdriver 10 further includes a first elastic sheet 400, one end of the universal joint 300 connected to the connecting rod 100 is provided with a first groove 330, and the first elastic sheet 400 is disposed in the first groove 330 and is sandwiched between the connecting rod 100 and the universal joint 300.

The shape and size of the first groove 330 and the first elastic sheet 400 are adapted, for example, as shown in fig. 8, the first groove 330 and the first elastic sheet 400 may be both set to be circular, and a through hole is further formed in the center of the first elastic sheet 400, so that the connection between the connecting rod 100 and the gimbal 300 is prevented from being affected. Through locating first shell fragment 400 in first recess 330 to make first shell fragment 400 press from both sides and locate between connecting rod 100 and universal joint 300, so, in the use of bottle opener 10, whenever universal joint 300 takes place relative rotation with connecting rod 100, first shell fragment 400 can take place synchronous rotation to a certain extent, has increased the damping between universal joint 300 and connecting rod 100, avoids appearing unnecessary and rocking because the damping is undersize between universal joint 300 and the connecting rod 100, has increased the firm degree between universal joint 300 and the connecting rod 100.

Similarly, in some embodiments, optionally, the screwdriver 10 further includes a second elastic sheet 500, one end of the universal joint 300 connected to the screwdriver head 200 is provided with a second groove 340, and the second elastic sheet 500 is disposed in the second groove 340 and is sandwiched between the universal joint 300 and the screwdriver head 200.

The shape and size of the second groove 340 and the second elastic piece 500 are adapted, for example, as shown in fig. 8, the second groove 340 and the second elastic piece 500 may be both set to be circular, and a through hole is further formed in the center of the second elastic piece 500, so that the influence on the connection between the universal joint 300 and the screwdriver head 200 is avoided. By arranging the second elastic sheet 500 in the second groove 340 and clamping the second elastic sheet 500 between the universal joint 300 and the screwdriver head 200, in the using process of the screwdriver 10, when the screwdriver head 200 and the universal joint 300 rotate relatively, the second elastic sheet 500 can rotate synchronously to a certain extent, so that the damping between the screwdriver head 200 and the universal joint 300 is increased, unnecessary shaking caused by too small damping between the screwdriver head 200 and the universal joint 300 is avoided, and the stability between the screwdriver head 200 and the universal joint 300 is increased.

In the screw driver 10, the first elastic piece 400 and the second elastic piece 500 may be provided at the same time, or only one of the first elastic piece 400 and the second elastic piece 500 may be provided, and the adjustment may be performed according to a required damping amount.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is specific and detailed, but not construed as limiting the scope of the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A driver, comprising:

a connecting rod; and

the screwdriver head comprises a connecting section and a nail taking section which are connected with each other, the connecting section is connected with the connecting rod and is along a first direction, the section area of the nail taking section on a plane perpendicular to the first direction is gradually reduced, and the first direction is that the connecting section points to the direction of the nail taking section.

2. The driver of claim 1 wherein the staple removing section comprises a body portion and a plurality of flanges provided to project from an outer wall surface of the body portion;

along the first direction, the cross-sectional area of the body portion on a plane perpendicular to the first direction is gradually reduced; and/or

Along the first direction, the cross-sectional area of the flange on a plane perpendicular to the first direction gradually decreases.

3. The driver as set forth in claim 2 wherein the body portion is configured to be cylindrical;

the flanges are arranged in an annular array around the outer wall surface of the body part, and the cross-sectional area of the flanges on a plane perpendicular to the first direction is gradually reduced along the first direction.

4. The driver of claim 2, wherein the body portion is configured to be frustoconical;

the flanges are arranged in an annular array around the outer wall surface of the body part, the cross-sectional area of the body part on a plane perpendicular to the first direction is gradually reduced along the first direction, and the cross-sectional area of the flanges on the plane perpendicular to the first direction is kept constant.

5. The driver of claim 4 where the taper of the body portion is 2.5.

6. A driver as defined in any one of claims 2 to 5 wherein the flange has an edge projecting away from the body portion.

7. A driver as defined in any one of claims 2 to 5 wherein the flange has an arcuate face convexly disposed away from the body portion.

8. The driver as set forth in any one of claims 1 to 5 further comprising a universal joint, one end of the universal joint being rotationally connected to the connecting rod about a first axis, the driver head being rotationally connected to the other end of the universal joint about a second axis, the first axis and the second axis being mutually perpendicular.

9. The driver as set forth in claim 8 further comprising a first resilient tab, wherein a first recess is disposed at an end of the universal joint connected to the connecting rod, and the first resilient tab is disposed in the first recess and interposed between the connecting rod and the universal joint.

10. The screwdriver according to claim 8, further comprising a second spring, wherein a second groove is formed in one end of the universal joint connected with the screwdriver head, and the second spring is arranged in the second groove and clamped between the universal joint and the screwdriver head.

Images