CN2440623Y - Screwdriver nail holding device with elastic expansion and contraction ability - Google Patents

Abstract

A screw holding device with elastic expansion and contraction capability for a screw driver is characterized in that a binding ring is fixedly arranged on a screw body of the screw driver, a spring seat is arranged at the bottom of the binding ring and is connected with a helical pressure spring, the bottom of the pressure spring is movably pivoted with another elastic claw body, a plurality of arc claw rods are arranged at the bottom of a ring-shaped guide ring of each claw body, a screw holding groove is arranged between the claw rods around one claw rod forming a clamping opening and the clamping opening, a screw is placed into the claw body through the screw holding groove, and the screw is elastically clamped by utilizing the clamping opening.

Description

Screwdriver nail holding device with elastic expansion and contraction ability

The utility model relates to a screwdriver nail holding device with elastic expansion and contraction ability.

The application technology of using a screwdriver to lock and turn screws has a history of hundreds of years. With the needs of various locking and matching purposes of various screws, screws of various specifications, sizes and styles have been developed, such as cross-shaped, flat-shaped, flat-shaped, Hexagonal or plum-blossom-shaped round head, flat head, or crown head screws, etc. These different styles of screws all have a screwdriver with the same cog specification to facilitate the rotation and operation of the screwdriver to lock the screw.

In order to use the screwdriver to lock and turn the screw conveniently, the technology of attaching magnetism to the body of the screwdriver has been seen so far. The body of the screwdriver can be directly used to hold the screw, so that the groove on the screw head can be automatically held by the groove at the head of the body of the screwdriver. However, the concave surface of the cog on the screw head is so small that the contact area of the cog at the head end of the screwdriver body is extremely limited. , The phenomenon that the lifting nail falls off often occurs, especially when the screwdriver body is used to hold the nail head of the long rod-shaped screw and when the magnetic force of the screwdriver body is insufficient, it is easy to cause the unstable phenomenon that the lifting nail falls off.

In addition, when a magnetic screwdriver sucks and exerts force on the locking screw and bites into the surface of the work object, it cannot use the magnetic force to stabilize and straighten the screw, so that the locking screw often shakes during the positioning operation. unstable phenomenon. In order to overcome this phenomenon, it is customary to use fingers, pliers or clips to hold the screws, and there is no other way. However, when using fingers, pliers or clips to hold the screws, the operating space is often too narrow. The limitation caused by the difficulty in supporting the screw. Furthermore, a screwdriver with magnetic force cannot be used to hold non-ferrous alloy screws, wood screws or plastic screws, because these screws do not have magnetic sensitivity. Capable of turning and locking screws.

In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a screwdriver nail holding device with elastic expansion and contraction ability, which has the advantages of convenient installation of the clamped screw, elastic adjustment of the position of the nail, and stable insertion and locking. The ability to turn the screw, so as to achieve the convenience of holding the nail without using fingers, pliers, or clips, and improve the stability of the operation of inserting and locking the screw.

In order to achieve this goal, the utility model is implemented through the following technical solutions: a screwdriver nail holding device with elastic expansion and contraction capacity, which is mainly composed of a bunch of rings, a helical compression spring and another claw body. Composition, set on the screwdriver rod body to hold and lock and release the nail head screw; its characteristic is: a helical compression spring is movable and pivoted between the clamp ring and the claw body, and the clamp ring is fastened and held on the screwdriver rod body , and the claw body is elastically held by the spiral compression spring, and the claw body is suspended by the compression spring on the nail-holding position of the cog of the screwdriver rod body; the claw body has a ring-shaped guide ring and a plurality of strips Each claw bar surrounds and forms a nail-holding jaw, and one side of the claw bar is provided with a nail-setting groove.

A connecting ring is tied on the tie ring, and another spring seat is movably pivoted on the connecting ring, and the spring seat is covered with the above-mentioned pressure spring.

The bottom edge of the spring seat is provided with a retaining ring.

The ring-shaped guide ring of the claw body is movably pivoted on a connecting ring, the connecting ring is embedded with a pressure spring, and the claw body is elastically pivoted on the bottom of the pressure spring.

The above-mentioned claw bodies are all curved.

The bottoms of the claw rods are all openings that arc outwards.

C-shaped tension springs are respectively embedded in the arc-shrinking part and the bottom of the claw rod.

A screwdriver nail holding device with elastic expansion and contraction ability of the utility model overcomes the shortcomings of the prior art and achieves the above creation purpose. The utility model has the convenience of installing and clamping screws, and can elastically transfer the nail Position ability and the effectiveness of stably holding and locking screws, and can be easily installed on various types of screwdrivers, and is suitable for inserting and clamping a variety of nail-head screws, so it can improve the use of screwdriver hand tools or automatic assembly The nail holding capacity of an electric screwdriver.

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

Fig. 1 is the three-dimensional exploded schematic view of the utility model;

Fig. 2 is a schematic cross-sectional view of the utility model before the screw is placed into the nail-holding device;

Fig. 3 is a cross-sectional view of the state of the utility model embedded with a screw;

Fig. 4 is a sectional view of the utility model in the process of locking the screw into the surface of the work object;

Fig. 5 is a sectional view of the utility model when the screw is completely locked into the surface of the work object;

Fig. 6 is a cross-sectional view of another type of screw embedded in the utility model.

As shown in Figure 1, the screwdriver nail holding device with elastic expansion and contraction ability of the utility model is mainly composed of a beam ring 1, a spring seat 20, a helical compression spring 2 and another claw body 3; wherein,

The clamping ring 1 is made of a rubber ring with a binding capacity, so that one end of the clamping ring 1 can be clamped and held at an appropriate height of the rod body 41 of the screwdriver 4 (as shown in FIG. 2 ).

The other end of the clamping ring 1 holds a connecting ring 10, and the connecting ring 10 is used to pivotally connect the spring seat 20, so that the spring seat 20 can not rotate with the locking operation of the clamping ring 1 and the screwdriver body 41. And by this spring seat 20 sleeve stage clip 2, this spring seat 20 bottom edges and are shaped on a retaining ring 21, in order to limit the bottom movable pivot of stage clip 2 this claw body 3 (as shown in Figure 2).

The claw body 3 is made of elastic plastic, and the claw body 3 has a ring-shaped guide ring 31 (as shown in Figure 1) and is movable and pivotally placed on a connecting ring 37 (as shown in Figure 2), and the connecting ring 37 A spring buckle groove 30 is provided on the outer wall to embed the above-mentioned compression spring 2, and a bundle ring 300 is provided outside the buckle groove 30, so that the compression spring 2 can be stably embedded in the buckle groove 30 and can be connected with the claw body 3. Connecting ring 37 and movable pivot state, to prevent the relative rotation phenomenon between claw body 3 and clip spring 2, and have the ability of the cog 42 peripheral elastic adjustment claw body 3 holding nail position in screwdriver rod body 41 end (as Figure 3). At the same time, the bottom of the guide ring 31 is extended to form a plurality of curved claw bars 32 (as shown in FIG. 1 ), so that the nail holding jaws 33 with elastic expansion and contraction capabilities are formed around the claw bars 32 (as shown in FIG. 1 ). 2).

One side of each claw bar 32 is also provided with a nail groove 36, which can be conveniently inserted into the jaw 33 of the claw body 3 for the screw 5 (as shown in Figures 2 and 3), and the middle section of each claw bar 32 The outer wall of arc position is shaped on draw-in groove 34, in order to embed a C-shaped expansion and contraction spring 35, and each paw bar 32 bottoms and is shaped on draw-in groove 340, in order to embed another C-shaped expansion and contraction spring 350, borrow The two C-shaped expansion and contraction springs 35 and 350 are used to improve the ability of elastic expansion and contraction of each claw bar 32 to hold the screw 5 (as shown in FIG. 2 ).

When in use, in order to enable the above-mentioned claw body 3 to stably embed the screws 5 of many styles, the pressure clamped on the spring seat 20 can be released depending on the length of the screw 5 to be clamped or the height of its nail head 51 . The desired length of the spring 2 makes the nail groove 36 of the claw body 3 just suspended at the height (as shown in Figure 2 ) where the nail head 51 can be placed, so as to facilitate the insertion of the slot 52 on the nail head 51 The load is properly loaded with spring pressure and is stably buckled on the cog 42 at the bottom of the luzi rod body 41, and the clamped screw 5 is stably embedded by the elastic force of each claw rod 32 (as shown in FIG. 3 ). At the same time, when the screwdriver 40 is operated to lock and turn the screw 5 to implant the surface 6 of the work object (as shown in Figure 4), the jaws 33 between the claw bars 32 can be gradually moved along with the progressive rotation of the nail head of the screw 5. Elastically push it away, and make the ends of the claws 32 touch the surface 6 of the work object. As the screw 5 is gradually locked and turned into the surface 6 of the work object, the claw body 3 will be pushed by the surface 6 of the work object. , so that the claw body 3 pushes the compression spring 2 and gradually withdraws from the screw 5 until the screw 5 is implanted on the surface 6 of the work object (as shown in Figure 5). During the process of locking and turning the screw 5, each claw The rod 32 still has the active force of the elastic beam clip, so it can ensure the stability of the screw 5 when it withdraws from the claw body 3, so that the screw can be stably locked and transferred to the surface 6 of the work object.

After using the nail holding device of the present utility model to implant the screw 5 into the surface 6 of the work object, because the claw body 3 pushes the spring 2, the claw body 3 can be quickly returned by the return force of the compression spring 2 The nail-holding position of the cog 42 of the original screwdriver body 41 is to facilitate the next operation of embedding the screw.

When using the nail-holding device of the present utility model to hold the screw 54 (as shown in Figure 6 ) such as the round-head-shaped nail head 53 with a higher height, the claw body 3 can be controlled by releasing an appropriate amount of ring coil spring rod on the spring seat 20 The sagging height makes the round head screw 54 also able to be stably embedded and locked.

To sum up, the screwdriver nail holding device with elastic expansion and contraction ability of the utility model has the convenience of installing and clamping screws, the ability to elastically adjust the position of the nail, and the effectiveness of providing stable embedding and locking screw , and can be easily installed on various types of screwdrivers, and is suitable for inserting and clamping a variety of nail-head screws, so it is novel and progressive in creation. Now a utility model patent application is filed in accordance with the law. I sincerely ask for your approval. Thank you for your convenience.

Claims (7)

1. A screwdriver nail holding device with elastic expansion and contraction ability, which is mainly composed of a bunch of rings, a helical compression spring and another claw body, which is set on the screwdriver rod to hold and lock and release the nail head screw; It is characterized in that: a helical pressure spring is pivotally placed between the beam ring and the claw body, and the beam ring is fastened and held on the rod body of the screwdriver, and the claw body is elastically held by the helical pressure spring, and the claw body is held by the pressure spring Hanging on the nail-holding position of the cog of the screwdriver body; the claw body has a ring-shaped guide ring and a plurality of claw rods on the bottom of the guide ring, and a nail-holding jaw is formed around each claw rod. And set up a nail slot. 2. The screwdriver nail holding device with elastic expansion and contraction capacity according to claim 1, characterized in that: a connecting ring is placed on the tightening ring, and another spring seat is movably pivoted on the connecting ring, and the spring seat is covered with the above-mentioned Compression spring. 3. The screwdriver nail holding device with elastic expansion and contraction capability as claimed in claim 2, wherein a retaining ring is provided on the bottom edge of the spring seat. 4. The screwdriver nail holding device with elastic expansion and contraction ability according to claim 1, characterized in that: the ring-shaped guide ring of the claw body is movable and pivotally placed on a connecting ring, and the connecting ring is embedded with a compression spring, and the claw The body is elastically pivoted on the bottom of the compression spring. 5. The screwdriver nail-holding device with elastic expansion and contraction capability according to claim 1, wherein the claws are curved. 6. The screwdriver nail holding device with elastic expansion and contraction capability according to claim 1, characterized in that: the bottoms of the claw rods are all openings that arc outwards. 7. The screwdriver nail-holding device with elastic expansion and contraction capability according to claim 1, characterized in that: C-shaped expansion and contraction springs are respectively embedded in the arc retraction part and the bottom of the claw lever.

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