CN106078592A - A kind of driver bit for installing anti-reverse screw and screwdriver - Google Patents

Abstract

The invention relates to a screwdriver head and a screwdriver for installing an anti-reverse screw. The screwdriver head includes a force application part for transmitting torque to the anti-reverse screw head to be installed; the rotation radial direction of the force application part is The outer side is provided with a positioning part for blocking and cooperating with the head of the anti-reverse screw along the extending direction of the slotted groove on the head of the anti-reverse screw. The positioning part is provided on the screwdriver head, and the positioning part is arranged on the radially outer side of the force application part, and is used to stop and cooperate with the screw head along the extension direction of the slotted groove on the screw head, ensuring that the anti-reverse screw is installed At the same time, the slot of the screwdriver head does not slip off, so that the screwdriver head and the bearing part of the screw are fastened together, so that the installation of the screw is more stable and convenient, and the efficiency of installation operation is improved.

Description

A screwdriver head and a screwdriver for installing anti-reversal screws

technical field

The invention relates to a screwdriver head, in particular to a screwdriver head equipped with an anti-reversal screw. The invention also relates to a screwdriver for installing an anti-reverse screw.

Background technique

In recent years, in order to improve the safety of the meter, relevant units have invented an anti-reverse screw as shown in Figure 1 and Figure 2. The head 31 of this screw 3 is provided with a slot 32, and the slot 32 Only about half of each side in the width direction is used for installation force, and only about half of the remaining half of the part exists, and the other half is milled with a 45-degree slope, so in When installing the screw, only about a quarter of the parts on both sides bear the torque of the screwdriver, so that the screw can be screwed into the nut in the forward direction; when the screw is to be rotated in the reverse direction, because there is no force-bearing part, the screwdriver does not use force , the screw cannot be rotated, so it cannot be unscrewed from the nut, so this screw also has the effect of anti-theft.

And because of the special structure of this anti-reverse screw, when the anti-reverse screw head is rotated in the forward direction, the place where the head of the anti-reverse screw bears the rotation of the screwdriver is too small and too small, and it is easy for the screwdriver bit and the screw head to extend in the slot. The direction is not centered, the force is uneven, the flat head screwdriver is easy to run off, and it is not easy to apply force. When installing the anti-reverse screw, the screwdriver is difficult to get stuck in the slot, and it is easy to slip and hit the hand, and the operation efficiency is low.

Contents of the invention

The purpose of the present invention is to provide a screwdriver head to solve the problem that the screwdriver and the screw head are not centered in the extending direction of the slot when the anti-reverse screw is installed, the force is uneven, the screwdriver is easy to slip, and the groove is not easy to be stuck. Another object of the present invention is to provide a screwdriver for installing anti-reverse screws.

For realizing the above object, technical scheme of the present invention is:

A screwdriver head for installing an anti-reverse screw, the screwdriver head includes a force applying part for transmitting torque to the head of the anti-reverse screw to be installed; The locating part is engaged with the head of the anti-reverse screw along the extension direction of the slot on the head of the anti-reverse screw.

The positioning portion is formed by a sleeve sleeved on the radially outer side of the force applying portion.

The front end of the sleeve is defined as the end that matches the head of the anti-reverse screw to be installed, and the part of the front end of the sleeve protruding from the force applying portion constitutes the positioning portion.

A fixed connection structure is provided between the rear end of the sleeve and the force application part for fixing the sleeve and the force application part as a whole.

The force application part is a prefix structure.

A screwdriver, comprising a handle and a screwdriver head, the screwdriver head includes a force applying part for transmitting torque to the anti-reversal screw head to be installed; The head of the reversing screw blocks the matching positioning portion along the extending direction of the slot on the head of the anti-reversing screw.

The positioning portion is formed by a sleeve sleeved on the radially outer side of the force applying portion.

The front end of the sleeve is defined as the end that matches the head of the anti-reverse screw to be installed, and the part of the front end of the sleeve protruding from the force applying portion constitutes the positioning portion.

A fixed connection structure is provided between the rear end of the sleeve and the force application part for fixing the sleeve and the force application part as a whole.

The force application part is a prefix structure.

The beneficial effects of the present invention are: compared with the prior art, the screwdriver head used for installing the anti-reverse screw according to the present invention is provided with a positioning part on the screwdriver head, and the positioning part is arranged on the radially outer side of the force application part. In order to stop and cooperate with the screw head along the extension direction of the slot on the screw head, it solves the problem that when the anti-reverse screw is installed, the screwdriver head and the screw head are not aligned in the extension direction of the slot, and the force is not correct. Even, the flat-head screwdriver is easy to run off, and it is not easy to apply force to make the bit slip when it is stuck in the groove; the positioning part fastens the screwdriver head and the part of the screw that bears the force together, which plays a certain role in guiding and positioning, so that The installation of the screw is more stable and convenient, which improves the efficiency of installation and operation. In some spaces that are not easy to operate, the cutter head and the screw can be better connected, reducing the difficulty of installation.

Description of drawings

Figure 1 is a schematic diagram of the anti-reverse screw structure;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is a schematic structural diagram of a specific embodiment of the present invention;

Fig. 4 is a bottom view of Fig. 3;

Fig. 5 is a schematic structural diagram of the force applying part of another specific embodiment of the present invention;

Fig. 6 is a structural schematic diagram of another specific embodiment of the present invention.

detailed description

Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

A specific embodiment of the present invention, as shown in Fig. 3 to Fig. 4, the screwdriver bit described in the present invention includes a force application part that transmits torque to the head of the anti-reverse screw to be installed, and the rotation radial outer side of the force application part is There is a positioning part used to block and cooperate with the screw head along the extension direction of the slot on the screw head, and the force application part directly acts on the slot of the anti-reverse screw head to be installed; The radial direction of the force part is the direction perpendicular to the axis of rotation on the force part during the process of installing the anti-reverse screw; The radially outer side of the force applying part 2 is the radially outside of the screwdriver bit 2, and the bit 2 of the flat-shaped screwdriver is used as the force applying part, which has a simple structure, is convenient to manufacture, and is low in cost; the sleeve 1 is set on the screwdriver On the bit 2 of the screwdriver, the front end 11 of the sleeve 1 protrudes from the bit 2 of the screwdriver to form a positioning part. contact with the installation force-bearing surface; wherein, the position of the bit 2 of the screwdriver in the inner cavity of the sleeve 1 does not exceed the front end of the sleeve 1, taking into account the total height of the part bearing the force of the screw and the total length of the screw head , multiple tests, the distance between the front end of the sleeve 1 and the front end of the screwdriver bit 2 is preferably 3 mm; the inner diameter of the sleeve 1 is slightly larger than the outer diameter of the head of the anti-reverse screw, preferably the sleeve 1 The inner diameter is 0.2mm larger than the outer diameter of the screw cap. The purpose is to make the sleeve 1 easy to fit on the anti-reverse screw; the outer diameter of the sleeve 1 should not be too large. When installing the anti-reverse screw on the electric meter case, Because the groove width of the screw part on the ammeter case is only 2mm larger than the screw outer diameter, the wall thickness of the sleeve 1 cannot exceed 1mm, so the wall thickness of the sleeve is preferably 0.5mm, so that the sleeve is easier to use. A fixed connection structure is provided between the rear end of the sleeve 1 and the bit 2 of the screwdriver, and the fixed connection structure in this embodiment is a welded connection structure. After combining the bit 2 of the screwdriver and the sleeve 1 according to an appropriate distance according to the actual installation situation, the sleeve 1 and the bit 2 of the screwdriver are welded together.

When in use, align the front end of the sleeve 1 with the anti-reverse screw on the screw hole to be installed, turn the screwdriver to drive the screwdriver bit 2, and wait for the screwdriver bit 2 to snap into the slot on the head of the anti-reverse screw When inserting the screwdriver head 2 into the screw groove, put the sleeve 1 on the screw head and turn the screwdriver to complete the installation.

In other specific implementations of the present invention, the screwdriver head on the screwdriver can be integrated with the screwdriver shaft, or it can be detached. For example, a force application part is directly provided on the sleeve, and a Inner hexagonal hole, inserting the outer hexagonal screwdriver shank into the sleeve rear end is another form of the present invention.

In other specific implementations of the present invention, the force applying portion may be set as a bit of a screwdriver in other forms. For example, the cutter head 4 shown in FIG. 5 is provided with a protrusion 41 at the end of the cutter head 4 that matches the shape of the groove surface at the end of the anti-rotation screw, which makes the installation more convenient.

In other specific embodiments of the invention, the force application part can be provided with other forms of force application parts except the bit of the screwdriver. As shown in FIG. The clamping block 52 fitted at the end of the installed anti-reverse screw, the clamping block 52 is directly clamped on the force-bearing surface of the head of the anti-reverse screw to be installed; or a force-applying force of an in-line structure is directly welded inside the sleeve The fitting fits into the slot in the head of the anti-reverse screw.

In other specific implementations of the present invention, the positioning part can be set as a positioning part other than a sleeve, for example, two claw-shaped structures are provided on both sides of the force application part, for The two sides of the extending direction of the groove are matched with the screw head, and the claw structure can be arc-shaped or cylindrical; the number of claws can be three claws or four claws.

In other specific embodiments of the present invention, the fixed connection structure can be set on the head of the screwdriver, or on the screwdriver, such as setting threads on the screwdriver shaft, and setting a matching screwdriver at the rear end of the sleeve. Internal thread, the sleeve is rotated and fixed on the screwdriver.

Claims (10)

1. one kind for installing the driver bit of anti-reverse screw, it is characterised in that: described driver bit includes for pacifying to waiting The force section of the anti-reverse screw head transmission moment of torsion of dress；The outside radially that rotates of described force section is provided with for anti-reverse The location division that the bearing of trend block of screw head word groove along anti-reverse screw head coordinates.

Driver bit for installing anti-reverse screw the most according to claim 1, it is characterised in that: described location division by The sleeve being enclosed within force section radial outside is formed.

Driver bit for installing anti-reverse screw the most according to claim 2, it is characterised in that: definition sleeve on One end that anti-reverse screw head to be installed coordinates is front end, and the part of the protrusion force section, front end of described sleeve constitutes described Location division.

Driver bit for installing anti-reverse screw the most according to claim 3, it is characterised in that: after described sleeve It is provided with fixed connection structure, for sleeve and force section being fixed as one between end and described force section.

5. according to the driver bit for installing anti-reverse screw described in any one of Claims 1-4, it is characterised in that: institute Stating force section is manifold structure.

6. a screwdriver, including handle and driver bit, it is characterised in that: described driver bit includes for to be installed The force section of anti-reverse screw head transmission moment of torsion；Described force section rotate outside radially be provided with for anti-reverse screw The location division that the bearing of trend block of head word groove along anti-reverse screw head coordinates.

Screwdriver the most according to claim 6, it is characterised in that: described location division is by the set being enclosed within force section radial outside Cylinder is formed.

Screwdriver the most according to claim 7, it is characterised in that: with anti-reverse screw head to be installed on definition sleeve The one end coordinated is front end, and the part of the protrusion force section, front end of described sleeve constitutes described location division.

Screwdriver the most according to claim 8, it is characterised in that: set between rearward end and the described force section of described sleeve There is fixed connection structure, for sleeve and force section being fixed as one.

10. according to the screwdriver described in any one of claim 6 to 9, it is characterised in that: described force section is manifold structure.