CN209207360U - A kind of interchangeable bit screwdriver of hand held rotation - Google Patents

Abstract

The utility model provides a hand-held rotary exchangeable head screwdriver, which comprises a screwdriver part and a power part, the power part is detachably sheathed on the outside of the screwdriver part; the screwdriver part comprises a handle, a bearing, a screw rod and a screwdriver head, and the bearing is embedded in the handle Inside; the screw includes a fixed end and a working end, the fixed end is provided with a fixed stop and a fixed pin, the fixed stop is integrally connected with the fixed end and is located above the fixed end, and the fixed pin is integrally connected with the fixed stop and located above the fixed stop , the fixing pin is embedded in the bearing, the working end is provided with a connecting pin, the connecting pin is integrally connected with the working end, the tail end of the screwdriver head is provided with a connecting pin hole, and the connecting pin is detachably installed in the connecting pin hole; the power part includes A spring stopper, a spring and a sleeve; one end of the spring is fixedly connected with the spring stopper, and the other end of the spring is fixedly connected with the sleeve; the spring stopper is provided with a through hole, and the sleeve is provided with an internal thread; the utility model saves time Labor saving, wide application range and space saving.

Description

A hand-held rotary screwdriver with interchangeable heads

technical field

The utility model relates to the technical field of screwdrivers, in particular to a hand-held rotary and exchangeable head screwdriver.

Background technique

A screwdriver is a special tool used to turn a screw to lock or loosen the screw. It usually has a flat-shaped bit or a cross bit that can be inserted into the slot or notch of the screw head, but the slot of the screw head Or the sizes in the notches are inconsistent, so that the staff needs to carry a plurality of screwdrivers with screwdriver heads of different sizes or shapes, which brings trouble to the carrying work of the tools.

In addition, currently screwdrivers are usually divided into manual screwdrivers and electric screwdrivers. Electric screwdrivers usually require an external power supply or have a battery; the use of an external power supply needs to accommodate the position of the power supply, and the built-in motor makes the weight heavier; although the electric screwdriver with a battery is flexible to use, it is larger and heavier. Because the manual screwdriver needs to be rotated manually, the rotation is laborious and sharp, and the speed and tightness of the tightening screw are determined by the speed and force of the hand. The handle is small and laborious to use, and the speed is not fast, and it is impossible to change a variety of different types of screwdriver. It is bulky and inconvenient to carry, and the purchase cost increases.

Utility model content

In view of the above problems, the utility model provides a hand-held rotary screwdriver with replaceable heads.

To achieve the above object, the utility model adopts the following technical solutions:

A hand-held rotary and exchangeable head screwdriver comprises a screwdriver part and a power part, wherein the power part is detachably sleeved on the outside of the screwdriver part.

The screwdriver part includes a handle, a bearing, a screw rod and a screwdriver head, the handle includes a hand-held end and a connecting end, the connecting end is provided with a circular groove, and the bearing is embedded in the groove of the connecting end; The screw rod includes a fixed end and a working end, the fixed end is provided with a fixed block and a fixed pin, the fixed block is integrally connected with the fixed end and is located above the fixed end, and the fixed pin is connected to the fixed end. The block is integrally connected and located above the fixed block, the fixed pin is embedded in the bearing, the working end is provided with a connecting pin, the connecting pin is integrally connected with the working end, and the screwdriver The tail end of the head is provided with a connecting pin hole, and the connecting pin is detachably installed in the connecting pin hole.

The power part includes a spring stopper, a spring and a sleeve; one end of the spring is fixedly connected to the spring stopper, and the other end of the spring is fixedly connected to the sleeve; the spring stopper is provided with The through hole is provided with an internal thread in the sleeve, and the spring block, the spring and the sleeve have a concentric axis.

Preferably, four connecting rods are integrally provided on the outside of the sleeve, the four connecting rods are symmetrically arranged on both sides of the outside of the sleeve, and two of the four connecting rods are located on the same side up and down. set up.

Preferably, the length of the screw is greater than the total length of the power part.

Preferably, the diameter of the through hole of the spring stopper is larger than the diameter of the screw rod, and the diameter of the through hole is smaller than the outer diameter of the fixed stopper.

Preferably, the inner diameter of the spring is the same as the diameter of the through hole.

Preferably, the connecting pin is a magnetic prism.

Preferably, the cross-sectional pattern of the connecting pin hole is the same as the cross-sectional pattern of the prism.

Preferably, the screwdriver bit is a wear-resistant metal bit that can be adsorbed by a magnetic pole.

Preferably, the hand-held end is in the shape of a cylinder with a spherical upper surface and no edges and corners.

Preferably, the screwdriver bits are replaceable cross-shaped or straight-line bits of different specifications.

Compared with the prior art, the beneficial effects of the utility model are as follows: the handle and the screw rod are connected by a bearing, so as to ensure the normal rotation of the screw rod when the handle is held to make the screwdriver vertical; It has the effect of tightening or loosening screws, saving time, effort and improving work efficiency; the screwdriver head can be replaced, which increases its applicability, solves the trouble of needing screwdrivers of different specifications, has a wide range of applications and saves space.

Description of drawings

FIG. 1 is a schematic structural diagram of a hand-held rotary screwdriver with replaceable heads according to the present invention.

Detailed ways

In order to have a further understanding of the purpose, structure, features, and functions of the present utility model, the following detailed descriptions are given in conjunction with the embodiments.

Please refer to FIG. 1 , which is a schematic structural diagram of a hand-held rotary screwdriver with replaceable heads according to the present invention. As shown in FIG. 1 , the present invention provides a hand-held rotary screwdriver with replaceable heads, which includes a screwdriver part and a power part, and the power part is detachably sleeved on the outside of the screwdriver part.

The screwdriver part includes a handle 1, a bearing 2, a screw 3 and a screwdriver head 4. The handle 1 includes a hand-held end 11 and a connecting end 12. The connecting end 12 is provided with a circular groove, and the bearing 2 is embedded in the groove of the connecting end 12. Glue and fix; the screw 3 includes a fixed end 31 and a working end 32, the fixed end 31 is provided with a fixed stop 33 and a fixed pin 34, the fixed stop 33 is integrally connected with the fixed end 31 and is located above the fixed end 31, the fixed pin 34 It is integrally connected with the fixed block 33 and is located above the fixed block 33. The fixed pin 34 is embedded in the bearing 2 and fixed by welding. The working end 32 is provided with a connecting pin 35, and the connecting pin 35 is integrally connected with the working end 32. , the tail end of the screwdriver head 4 is provided with a connecting pin hole 41 , and the connecting pin 35 is detachably installed in the connecting pin hole 41 . When in use, the tail end of the screwdriver head 4 is inserted into the connecting pin 35, the head end is inserted into the slot of the screw, the handle 1 is pressed against the palm of the hand to make the screwdriver as a whole vertical, and the handle 1 and the screw rod 3 are connected through the bearing 2, which can Ensure that the handle 1 is fixed and the screw 3 rotates to drive the screwdriver bit 4 to tighten or loosen the screw. Preferably, the connecting pin 35 is a magnetic prism. Preferably, the screwdriver bit 4 is a wear-resistant metal bit that can be attracted by magnetic poles. Preferably, the cross-sectional pattern of the connecting pin hole 41 is the same as the cross-sectional pattern of the prism, and the prismatic connecting pin 35 and the connecting pin hole 41 are matched and clamped to each other, so that the screwdriver bit 4 can be driven to rotate by the screw rod 3 to avoid slipping; The magnetic connecting pin 35 can attract the screwdriver bit 4 to prevent the screwdriver bit 4 from slipping off when not in use.

The power part includes a spring stopper 5, a spring 6 and a sleeve 7; one end of the spring 6 is fixedly connected to the spring stopper 5, and the other end of the spring 6 is fixedly connected to the sleeve 7. Usually, the two ends of the spring 6 can be welded to each other. The spring stop 5 and the sleeve 7 are attached to make the connection stable; the spring stop 5 is a wear-resistant metal block and has a through hole 51 inside. The spring stop 5 can block the fixed stop 33 when the spring 6 is compressed, preventing the spring 6 The inner diameter increases due to extrusion deformation, and the fixed block 33 is stretched out; the sleeve 7 is provided with an internal thread 71, the sleeve 7 is a metal threaded pipe, and the spring block 5, the spring 6 and the sleeve 7 have a concentric axis. The power part can be sleeved on the screw 3 in a forward direction, that is, the spring block 5 is sleeved on the screw 3 above; When the screw 3 is fixed, the sleeve 7 is screwed on the screw 3, and the sleeve 7 is held to compress the spring 6. During the compression process, the sleeve 7 is screwed on the screw 3, which drives the screw 3 to rotate, thereby tightening or loosen the screws.

Preferably, four connecting rods 72 are integrally provided on the outside of the sleeve 7 , and the four connecting rods 72 are symmetrically arranged on both sides of the outside of the sleeve 7 , and two of the four connecting rods 72 are arranged up and down on the same side. The arrangement of the four connecting rods 72 makes the work of the power unit more convenient. When in use, the middle finger and the index finger are inserted between the connecting rods on both sides respectively, which is convenient for operation and application of force.

Preferably, the length of the screw 3 is greater than the total length of the power part. To ensure normal fitting, the sleeve 7 can be screwed on the screw 3 to facilitate the implementation of the entire structure.

Preferably, the diameter of the through hole 51 of the spring stopper 5 is larger than the diameter of the screw rod 3 to ensure that the spring stopper 5 can be accurately fitted on the screw rod 3; the diameter of the through hole 51 is smaller than the outer diameter of the fixed stopper 33 to ensure that the entire power section Corresponding effects can be achieved. If the diameter of the through hole 51 is larger than the outer diameter of the fixed block 33, the entire screwdriver cannot work normally.

Preferably, the inner diameter of the spring 6 is the same as the diameter of the through hole 51 . On the one hand, it ensures that the spring 6 is smoothly fitted on the screw 3, and at the same time, it is avoided that the aperture of the spring 6 is too large to cause the structure to be damaged due to excessive deformation beyond the spring stop 5.

Preferably, the hand-held end 11 is a cylindrical shape with a spherical upper surface and no edges and corners. The spherical hand-held end 11 can be in contact with the staff's hand more smoothly, and the absence of edges and corners can avoid bruising, so that when the hand-held end 11 is in contact with the staff's hand, the hand of the staff is reduced due to long-term use of the screwdriver. cause some damages.

Preferably, the screwdriver bit 4 is a replaceable cross-shaped bit or a straight-line bit of different specifications. The connecting pin holes 41 at the tail end of the screwdriver heads 4 of different specifications are all the same, which can ensure their applicability; the cross-shaped bit or the flat-shaped bit of different specifications can meet the needs of different screws and solve the trouble of carrying multiple screwdrivers.

During work, first select the screwdriver head 4 according to the specifications of the screw slot, and insert the screwdriver head 4 on the connecting pin 35; if the screw is tightened, put the power part forward, and the sleeve 7 is at the bottom at this time. The handle 1, the middle finger and the index finger are inserted between the connecting rods on both sides of the sleeve 7, pull up and compress the spring 6, the sleeve 7 is screwed upward to drive the screw 3 to rotate and tighten the screw, and after the spring 6 is compressed to the most tight , pick up the screwdriver, due to the self-recovery elastic force of the spring 6, push the sleeve 7 back to the working end 32 of the screw 3, and then start a new round of tightening work; The sleeve 7 is located above, hold the handle 1 with one hand, and press the sleeve 7 down with the other hand. While compressing the spring 6, the sleeve 7 is screwed downward, driving the screw 3 to rotate and loosen the screw. After the spring 6 is compressed to the most tight , pick up the screwdriver, due to the self-recovery elastic force of the spring 6, push the sleeve 7 back to the fixed end 31 of the screw 3, and then start a new round of tightening work.

From the above, a hand-held rotary and exchangeable head screwdriver of the present invention connects the handle and the screw rod through a bearing, so as to ensure the normal rotation of the screw rod when the screwdriver is held vertically by the handle; the power part is sleeved on the screw rod, and the power part is compressed. , drives the screw to rotate, and has the effect of tightening or loosening the screw, saving time, effort, and improving work efficiency; the screwdriver head can be replaced, which increases its applicability and solves the need to bring different specifications of screwdrivers.

The present invention has been described by the above-mentioned related embodiments, but the above-mentioned embodiments are only examples of implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any alterations and modifications made without departing from the spirit and scope of the present utility model belong to the scope of patent protection of the present utility model.

Claims (10)

1. a kind of hand held rotates interchangeable bit screwdriver, it is characterised in that: including screwdriver portion and power part, the power part can It is releasably sleeved on the outside of the screwdriver portion；

The screwdriver portion includes handle, bearing, screw rod and driver bit, and the handle includes handheld terminal and connecting pin, described Connecting pin is equipped with circular groove, and the bearing is inlaid in the groove of the connecting pin；The screw rod includes fixing end and work End, the fixing end are equipped with fixed stop and fixed pin, and the fixed stop is with the fixing end integrally connected and positioned at described The top of fixing end, the fixed pin and the fixed stop integrally connected and the top for being located at the fixed stop, it is described solid Rationed marketing is inlaid in the bearing, and the working end is equipped with connecting pin, the connecting pin and the working end integrally connected, described The tail end of driver bit is equipped with connecting pin bores, and the connecting pin is removably mounted in the connecting pin bores；

The power part includes spring block, spring and casing；One end of the spring is fixedly connected with the spring block, institute The other end for stating spring is fixedly connected with described sleeve pipe；It is equipped with through-hole in the spring block, is equipped with internal screw thread in described sleeve pipe, The spring block, the spring and described sleeve pipe concentrically axis.

2. hand held as described in claim 1 rotates interchangeable bit screwdriver, it is characterised in that: be wholely set on the outside of described sleeve pipe There are four connecting rods, four connecting rods symmetrically set up the both sides on the outside of described sleeve pipe separately two-by-two, are located in four connecting rods Two of the same side are setting up and down.

3. hand held as described in claim 1 rotates interchangeable bit screwdriver, it is characterised in that: the length of the screw rod is greater than institute State the total length of power part.

4. hand held as described in claim 1 rotates interchangeable bit screwdriver, it is characterised in that: the through-hole of the spring block Diameter is greater than the diameter of the screw rod, and the diameter of the through-hole is less than the outer diameter of the fixed stop.

5. hand held as described in claim 1 rotates interchangeable bit screwdriver, it is characterised in that: the internal diameter of the spring with it is described The diameter of through-hole is identical.

6. hand held as described in claim 1 rotates interchangeable bit screwdriver, it is characterised in that: the connecting pin is magnetic for band Prism.

7. hand held as claimed in claim 6 rotates interchangeable bit screwdriver, it is characterised in that: the cross section of the connecting pin bores Figure is identical as the cross section figure of the prism.

8. hand held as claimed in claim 6 rotates interchangeable bit screwdriver, it is characterised in that: the driver bit is can be by magnetic The wear-resisting metal cutter head of pole absorption.

9. hand held as described in claim 1 rotates interchangeable bit screwdriver, it is characterised in that: the handheld terminal is that upper surface is Spherical surface and cylindrical of the edge without corner angle.

10. hand held as described in claim 1 rotates interchangeable bit screwdriver, it is characterised in that: the driver bit is that can replace The cross cutter head or linear type cutter head of the different size changed.