LU93424B1 - Demountable screwdriver - Google Patents

Abstract

The present invention discloses a dismountable screwdriver. The dismountable screw driver comprises a handle (10) and a screwdriver bar (30), the screwdriver bar (30) comprises a long arm (31) and a short arm (33), and the short arm (33) is vertically bent and extends from one end of the long arm (31). A locating slot (1121) and a through hole (1122) are communicated and are formed in the handle (10), the long arm (31) of t he screwdriver bar (30) partially protrudes from the exterior of the locating piece (11) through the through hole (1122), and the short arm (33) is fixedly stuck in the locating slot (1121). The invention further provides a handle. The screwdriver provided by the present invention has the advantages of convenience in operations and convenience in screwdriver bar dismounting

Description

DEMOUNTABLE SCREWDRIVER

BACKGROUND

Technical Field

The present invention relates to a screwdriver, and in particular to a demountable screwdriver.

Related Art

In a screw assembling or dismounting process, generally a screwdriver is used for performing dismounting and assembling operations. There are many types of screwdrivers, such as L-shaped screwdrivers and T-shaped screwdrivers. The L-shaped screwdriver comprises a long arm and a short arm that is vertically bent and extends from one end of the long arm; the length of the short arm is smaller than the length of the long arm, so, when the long arm is used for performing the dismounting and assembling operations, a user is hard to apply a relatively larger force through the short arm, resulting in inconvenience in operations. The T-shaped screwdriver comprises a handle and a screwdriver bar which are integrally formed, and the handle material is plastic; a contact area of the handle and the screwdriver bar is relatively smaller, and the fragility of the handle material is relatively larger, so that the plastic handle is easy to fragment during dismounting and assembling; furthermore, there are some T-shaped screwdrivers, the handle of which are made from high-toughness materials in order to prevent the handle from fragmenting; however, the screwdriver bar is easy to be worn or fragmented during assembling and dismounting, and it needs to be replaced; and because the handle and the screwdriver bar are integrally formed, when the screwdriver bar is worn or fragmented, the handle has to be abandoned even if it can be continuously used, and a new screwdriver should replace the worn or fragmented one, resulting in inconvenience in screwdriver bar dismounting.

Summary

In view of the above, it is necessary to provide a screwdriver convenient in operations and screwdriver bar dismounting. A dismountable screwdriver comprises a handle and a screwdriver bar, the screwdriver bar comprises a long arm and a short arm, and the short arm is vertically bent and extends from one end of the long arm. A locating slot and a through hole are communicated and are formed in the handle, the long arm of the screwdriver bar partially protrudes from the exterior of the locating slot via the through hole, and the short arm is fixedly stuck in the locating slot.

According to the dismountable screwdriver provided by the present invention, the communicated locating slot and through hole are formed in the handle, the short arm of the screwdriver bar is accommodated in the locating slot, and one end of the long arm protrudes from the exterior of the handle; the handle is mounted on the screwdriver bar, so that a user can conveniently apply a relatively larger force through the screwdriver bar, resulting in convenience in operations; furthermore, the screwdriver bar can be dismounted from the handle so as to be quickly replaced, the handle can be reutilized, and a new screwdriver does not need to replace the worn or fragmented one, resulting in convenience in screwdriver bar dismounting.

Brief Description of Drawings FIG. 1 is a stereoscopic schematic diagram of a screwdriver in a first embodiment of the present invention; FIG. 2 is a stereoscopic exploded view of the screwdriver as shown in FIG. 1; FIG. 3 is a cutaway view of a locating piece of the screw driver as shown in FIG. 2 along the Ill-Ill line; FIG. 4 is a cutaway view of the screwdriver as shown in FIG. 1 along the IV-IV line; and FIG. 5 is a cutaway view of a screwdriver in a second embodiment of the present invention.

Description of Embodiments

Referring to FIG. 1, in a first embodiment of the present invention, a screwdriver 100 is used for dismounting and assembling a workpiece (not shown in the accompanying drawings). The screwdriver 100 is approximately T-shaped and comprises a handle 10 and a screwdriver bar 30.

Simultaneously referring to FIG. 2 and FIG. 3, the handle 10 is approximately cylindrical and comprises a locating piece 11, a fixed piece 13 and two fasteners 15. The locating piece 11 is approximately cylindrical, and an accommodating part 112 is concavely formed in one side of the locating piece 11. A locating slot 1121 is formed in the accommodating part 112 in a length direction. A through hole 1122 is formed in the accommodating part 11 and is communicated with the locating slot 1121. The through hole 1122 and the locating slot 1121 commonly form an accommodating space 1120, and the accommodating space 1120 is used for accommodating the screwdriver bar 30. In the embodiment, the accommodating space 1120 has an L-shaped or T-shaped structure. Two fixing slots 1123 are concavely formed in parts, closed to the locating slot 1121, of the accommodating part 112, and the two fixing slots 1123 are respectively located on the two sides of the locating slot 1121.

The fixed piece 13 matches with the accommodating part 112 of the locating piece 11, the fixed piece 13 is mounted on the accommodating part 112, and the fixed piece 13 is located above the locating slot 1121 and the two fixing slots 1123. Fixing holes 131 are formed through parts, corresponding to the two fixing slots 1123, of the fixed piece 13, and the fixing holes 131 correspond to the corresponding fixing slots 1123. In the embodiment, the locating piece 11 and the fixed piece 13 are made from infrangible materials, such as metal, high-toughness plastic and the like.

The two fasteners 15 respectively pass through the two fixing holes 131 and are respectively locked in the two fixing slots 1123, so that the fixed piece 13 is fixedly mounted in the accommodating part 112 of the locating piece 11 through the fasteners 15. In the embodiment, the fasteners 15 are screws.

Simultaneously referring to FIG. 4, the screwdriver bar 30 is approximately L-shaped and is fixedly mounted in the locating slot 1121 of the locating piece 11. The screwdriver bar 30 comprises a long arm 31 and a short arm 33, and the short arm 33 is vertically bent and extends from one end of the long arm 31. In the embodiment, the screwdriver bar 30 is an L-shaped screwdriver bar, and the length of the short arm 33 is smaller than the length of the long arm 31. One end, far away from the short arm 33, of the long arm 31 partially protrudes from the exterior of the locating piece 11 through the through hole 1122 of the locating piece 11. The short arm 33 of the screwdriver bar 30 is accommodated in the locating slot 1121. The fixed piece 13 is fixedly mounted on the accommodating part 112 through the fasteners 15, and the bottom surface of the fixed piece 13 is propped against the short arm 33, so that the short arm 33 is clamped between the fixed piece 13 and the accommodating part 112. It should be understood that the corresponding screwdriver bar 30 is a T-shaped screwdriver bar when the locating slot 1121 has a T-shaped structure. It should be understood that the locating slot 1121 is designed according to the structure of the screwdriver bar 30.

When the screwdriver bar 30 needs to be replaced, the following steps are sequentially performed: firstly dismounting the two fasteners 15; dismounting the fixed piece 13 from the accommodating part 112 of the locating piece 11; pulling out the screwdriver bar 30; mounting a new screwdriver bar 30 in the locating slot 1121 of the locating piece 11; mounting the fixed piece 13 in the accommodating part 112 of the locating piece 11; and screwing down the fasteners 15 to fasten the locating piece 11 and the fixed piece 13.

In the present invention, the handle 10 utilized by the screwdriver 100 comprises the locating piece 11, the fixed piece 13 and the fasteners 15, and the locating piece 11 and the fixed piece 13 are made from infrangible materials, so that the handle 10 is hard to fragment. The locating slot 1121 is formed in the accommodating part 112 of the locating piece 11, the short arm 33 of the screwdriver bar 30 is accommodated in the locating slot 1121, one end, far away from the short arm 33, of the long arm 31 protrudes from the locating slot 1121, the fixed piece 13 is fixedly mounted in the accommodating part 112 of the locating piece 11 through the fasteners 15, the bottom surface of the fixed piece 13 is propped against the short arm 33, so that the short arm 33 is fixedly mounted on the locating piece 11 through the fixed piece 13. The handle 10 is mounted on the screwdriver bar 30, so that a user can conveniently apply a relatively larger force through the screwdriver bar 30, resulting in convenience in operations. Furthermore, the screwdriver bar 30 can be dismounted from the handle 10 of the screwdriver 100 so as to be quickly replaced, the handle 10 can be reutilized, and a new screwdriver does not need to replace the worn or fragmented one, resulting in cost saving and convenience in screwdriver bar dismounting.

It should be understood that: the number of the fasteners 15 is not limited to two in the embodiment, it may be one or more than two, and the numbers of the fixing holes 131 and the fixing slots 1123 are correspondingly designed according to the number of the fasteners 15. It should be understood that the fasteners 15 can be omitted, the fixed piece 13 is fixedly mounted in the accommodating part 112 of the locating piece 11 and is propped against the short arm 33 of the screwdriver bar 30, so that the short arm 33 of the screwdriver bar 30 is clamped between the locating piece 11 and the fixed piece 13. It should be understood that the fasteners 15 and the fixed piece 13 can be omitted, and the short arm 33 of the screwdriver bar 30 is fixedly stuck in the locating slots 1121.

Simultaneously referring to FIG. 5, a screwdriver 200 in a second embodiment of the present invention is approximately same as the screwdriver 100 in the first embodiment, and the screwdriver 200 also comprises a handle 50 and a screwdriver bar 70. The differences are as follows: the handle 50 comprises a locating piece 51 and a fixed piece 53. Communicated through hole 511 and locating slot 513 are sequentially formed in one end of the locating piece 51 in the length direction. The through hole 511 is formed in one end close to the handle 50, the through hole 511 and the locating slot 513 commonly form an accommodating space (not shown in the accompany drawings), and the accommodating space is used for accommodating the screwdriver bar 70. In the embodiment, the accommodating space has an L-shaped structure. The fixed piece 53 is fixedly stuck in the through hole 511 of the locating piece 51, and is propped against the screwdriver bar 70. In the embodiment, the handle 50 is made from an infrangible material, such as metal, high-toughness plastic and the like.

The screwdriver bar 70 comprises a long arm 71 and a short arm 73, and the short arm 73 is vertically bent and extends from one end of the long arm 71. The long arm 71 of the screwdriver bar 70 partially protrudes from the exterior of the handle 50 through the through hole 511 and is propped against the fixed piece 53, so that the long arm 71 of the screwdriver bar 70 is clamped between the locating piece 51 and the fixed piece 53. The short arm 73 is fixedly stuck in the locating slot 513. It can be understood that the fixed piece 53 can be omitted, and the short arm 73 of the screwdriver bar 70 is fixedly stuck in the locating slot 513.

In addition, persons skilled in the art further can made other changes within the spirit of the present invention. Certainly, those changes made according to the spirit of the present invention should fall within the protection scope of the present invention.

Claims (3)

1. A dismountable screwdriver, comprising a handle and a screwdriver bar, wherein the screwdriver bar comprises a long arm and a short arm, and the short arm is vertically bent and extends from one end of the long arm; the handle comprises a locating piece and a fixed piece, a locating slot and a through hole are communicated and are formed in the handle, the long arm of the screwdriver bar partially protrudes from the exterior of the locating slot through the through hole, and the short arm is fixedly stuck in the locating slot; the through hole and the locating slot are sequentially formed in one end of the locating piece in the length direction, the through hole is formed in one end close to the locating piece, and the fixed piece is fixedly stuck in the through hole of the locating piece and is propped against the long arm of the screwdriver bar, so that the long arm of the screwdriver bar is clamped between the locating piece and the fixed piece.

2. The dismountable screwdriver according to claim 1, wherein the handle comprises a locating piece and a fixed piece, an accommodating part is concavely formed in the locating piece, a locating slot and a through hole are respectively formed in the accommodating part, and the fixed piece is fixedly mounted in the accommodating part of the locating piece and is propped against a short arm of a screwdriver bar, so that the short arm is clamped between the locating piece and the fixed piece.

3. The dismountable screwdriver according to claim 1, wherein the through hole and the locating slot commonly form an accommodating space and the accommodating space has an L-shaped structure.