CN2291265Y

CN2291265Y - Improved structure of screwdriver

Info

Publication number: CN2291265Y
Application number: CN 97234533
Authority: CN
Inventors: 曾鸿贵
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-05-13
Filing date: 1997-05-13
Publication date: 1998-09-16
Anticipated expiration: 2007-05-13

Abstract

The utility model provides an improved structure of a screwdriver, particularly a structure in which the rod body part of the screwdriver can adjust a telescopic distance. The utility model is mainly composed of a front section rod body, a middle section rod body and a base section rod body, and the front section rod body, the middle section rod body and the base section rod body carry out telescopic adjustment through a positioning reed, a falling-stopping groove, a guide groove and a fixing hole.

Description

Improved structure of screwdriver

The present invention relates to an improved screwdriver, and more particularly to a structural design of a screwdriver capable of adjusting a long-distance telescopic structure at a screwdriver rod body.

The screwdriver is an indispensable tool in general factories, families and any places, and plays a role in tightening and loosening screws. The commonly used screwdriver, as shown in fig. 1, has a fixed length of the shank 10, and has the following disadvantages in use:

firstly, since the rod bodies of the common screwdrivers are designed to have fixed lengths, the screwdrivers sometimes cannot be matched with actual use requirements, for example, a screwdriver with a short rod body cannot be used when working at a long depth, or a screwdriver with a long rod body feels too long when working at a short distance, so that the common screwdrivers cannot be used with ease.

Secondly, due to different use requirements, common factories or households are provided with screwdrivers with different lengths so as to meet different use requirements, and therefore, a plurality of screwdrivers are required to be provided, which causes unnecessary cost waste.

Thirdly, if the driver needs to go out for working, it is very inconvenient to carry a plurality of screw drivers with different lengths.

The main object of the utility model is to provide a can carry out the improvement structure of the flexible screwdriver of adjusting use of length, can cooperate different use needs and nimble adjustment use, it is also convenient to carry, can give full play to its advantage in work.

The utility model is realized in such a way that the improved structure of the screwdriver, the rod body of which comprises a positioning reed which is sleeved with a base section rod, a middle section rod, a front section rod and an adjacent section rod in sequence for telescopic positioning, the top wall surface of the rod body of the base section rod is concavely provided with a drop-proof groove, and the side wall surface of the drop-proof groove is provided with a plurality of positioning holes; the wall surface of the rod body of the middle rod is concavely provided with a guide groove, a release-preventing spring plate is convexly arranged below the groove, the side edge of the release-preventing spring plate is provided with a fixing hole, the upper end of the other wall surface of the guide groove is provided with a release-preventing groove, and the upper part and the lower part of the other side wall surface of the guide groove are respectively provided with a positioning hole; the two sides of the rod body surface of the front section rod are respectively concavely provided with a guide groove, a fixed hole is arranged between the wall surfaces at the bottom ends of the two guide grooves, the end part of the bottom end of one guide groove is provided with a release-preventing spring plate, and the top end of the rod body is provided with an inner hexagonal screw rod head; the positioning spring is U-shaped, one side wall of the positioning spring is riveted with a steel ball positioning body, the end of the steel ball positioning body is cylindrical, and the top of the steel ball positioning body is hemispherical. The base section rod, the middle section rod and the front section rod can stretch up and down and are adjusted through the positioning spring, the guide groove, the anti-release spring plate, the anti-release groove, the fixing hole and the positioning hole.

The utility model has the advantages as follows:

1. the length of adjustable screwdriver, convenient to use can adjust the use in a flexible way according to the operation requirement of difference, has improved work efficiency.

2. The portable screwdriver has the advantages that the portable screwdriver is convenient to carry, screwdrivers with different lengths are avoided during outgoing operation, and the burden is reduced.

Brief description of the drawings:

fig. 1 is an appearance view of a common screwdriver.

Fig. 2 is an exploded perspective view of the present invention.

Fig. 3 is a combined sectional view of the present invention.

Fig. 4 is a schematic drawing of the present invention.

Fig. 5 is a schematic diagram of the present invention in a half-stretched state.

Fig. 6 is a schematic view of the present invention in full-shrink mode.

Fig. 7, 8 and 9 are schematic views of the anti-slip structure of the present invention.

Fig. 10 and 11 are schematic views of the positioning structure of the present invention.

The numbering in the drawings illustrates:

10-rod body 21-base section rod

22-middle rod 23-front rod

24-positioning reed 25-steel ball positioning body

251-cylinder 26-socket head cap

27-cross screwdriver bit 31-anti-drop groove

32-positioning hole 33-guiding groove

34-anti-release spring plate 35-fixing hole

The following provides a preferred embodiment of the present invention, which is illustrated in detail in the accompanying drawings:

fig. 2 and 3 show that fig. 2 is an exploded perspective view of the present invention, and fig. 3 is a sectional view of the present invention. Fig. 2 and 3 show that the present invention can be divided into a base rod 21, a middle rod 22, a front rod 23, and two positioning springs 24. Wherein,

the top end of the rod body of the base section rod 21 is concavely provided with a slip-off preventing groove 31, and the side wall surface of the slip-off preventing groove 31 is provided with a plurality of positioning holes 32;

a guide groove 33 is concavely arranged on the rod body of the middle rod, a release-preventing spring plate 34 and a fixing hole 35 are convexly arranged below the guide groove 33, a release-preventing groove 34 is arranged on the other wall surface of the guide groove 33, and positioning holes 32 are respectively arranged on the upper and lower rod body end wall surfaces of the other side wall surface;

the top end of the rod body of the front section rod is provided with a hexagon socket head 26, two sides of the wall surface are respectively provided with a guide groove 33 in a concave manner, the wall surface at the bottom end of the two guide grooves 33 is provided with a fixing hole 35, and the end part at the bottom end of one of the guide grooves 33 is provided with a release-preventing spring plate 34 in a protruding manner (in fig. 2, the structures of the guide groove 33 and the release-preventing spring plate 34 are positioned at the back side and just covered by the guide groove 33 at the front side);

the positioning spring 24 is a U-shaped structure, and a steel ball positioning body 25 is riveted on one wall surface of the positioning spring, the steel ball positioning body 25 is a structure with a cylinder 251 at the end and a semi-sphere at the top.

When the utility model is assembled, each positioning spring plate 24 is firstly respectively placed in the rod bodies at the bottom ends of the middle rod 22 and the front rod 23; because the U-shaped structure of the positioning spring plate 24 has the characteristic of elasticity, when the positioning spring plate is pressed into the rod body, the positioning steel ball 25 of the positioning spring plate 24 can be buckled in the fixing hole 35 at the bottom end of the rod body due to the elasticity of the positioning spring plate, so that the positioning spring plate can be stably fixed in the bottom end of the rod body and can move along with the motion of the rod body. After the above steps are completed, the front rod 23 is inserted into the upper end of the middle rod 22, the middle rod 22 is inserted into the base rod 21 (when the rods are inserted, the guide grooves 33 of the inner diameter rods are inserted into the anti-slip grooves 31 of the outer diameter rods, respectively), and the anti-slip grooves 31 and the guide grooves 33 of the rods can be matched with each other to prevent the inner diameter rods and the outer diameter rods from rotating relatively. As shown in fig. 7, 8 and 9, the inner diameter rod body anti-release spring plate 34 has elastic characteristics, and the anti-release groove 31 of the outer diameter rod body has a smooth concave portion at the upper edge and a cross-section at the lower edge portion with the wall surface of the outer diameter rod body, so that the inner diameter rod body can be smoothly inserted into the outer diameter rod body by force, and the inner diameter rod body can move relatively and cannot be separated out after being inserted into the outer diameter rod body by the clamping action.

As shown in fig. 4, 5 and 6, when the length of the steel ball positioning rod is adjusted to a proper length according to actual needs, the steel ball positioning body 25 protruding from the wall surface of the lower rod body is pressed first, and then the front rod 23 and/or the middle rod 22 are compressed or pulled, so that the required length can be adjusted. As shown in fig. 10 and 11, after the inner diameter rod body can slide to the next position in the outer diameter rod body, the steel ball positioning body 25 on the positioning spring piece 24 can be clamped in another positioning hole 32, so that the overall length of the rod body can be adjusted. The end of the steel ball positioning body 25 is a cylinder 251, so that the adjusted steel ball positioning body can be clamped in the positioning hole 32 of the rod body with the outer diameter to be stable, the rod body is not stretched or compressed under the action of external force, the adjusted fixed length can be maintained, and the using effect of the steel ball positioning body can be ensured.

The utility model discloses can adjust the use according to the needs of in-service use in a flexible way, have simultaneously and prevent to break away from and firm location, very nimble convenient and portable improves the efficiency of work greatly in the use.

Claims

1. An improved structure of a screwdriver is characterized in that a rod body comprises a base section rod (21), a middle section rod (22), a front section rod (23) and a positioning reed (24) for telescopic positioning of adjacent section rods which are sequentially sleeved, wherein a release-preventing groove (31) is concavely arranged on the wall surface of the top end of the rod body of the base section rod (21), and a plurality of positioning holes (32) are arranged on the side wall surface of the release-preventing groove (31); the middle section rod (22), the wall of the rod body is concavely provided with a guide groove (33), a release-stopping spring plate (34) is convexly arranged below the groove, the edge of the release-stopping spring plate (34) is provided with a fixing hole (35), the upper end of the other wall of the guide groove (33) is provided with a release-stopping groove (31), the upper part and the lower part of the other wall are respectively provided with a positioning hole (32), the two sides of the rod body surface of the front section rod (23) are respectively concavely provided with a guide groove (33), a fixing hole (35) is arranged between the wall surfaces at the bottom ends of the two guide grooves (33), the end part at the bottom end of one guide groove (33) is provided with the release-stopping spring plate (34), and the top end of the rod body; the positioning spring (24) is U-shaped, one side wall of which is riveted with a steel ball positioning body (25), the end of the steel ball positioning body is a cylinder (251) and the top is a semi-sphere structure.