CN201696439U - Screw with anti-dismounting structure - Google Patents

Abstract

The utility model provides a screw with an anti-dismounting structure, which belongs to the field of fasteners and solves the problem that the conventional screws are easily dismounted via a common screwdriver. The screw with the anti-dismounting structure comprises a screw body and a screw cap which are fixedly connected into a whole; threads are formed on the surface of the screw body; the screw cap is arranged at one end of the screw body; and an slot allowing a screwdriver to be inserted in is formed on the outer end surface of the screw cap. The screw is characterized in that the slot comprises a plurality of straight slots; and a stop block capable of blocking the straight slots is arranged in at least one straight slot. In the utility model, the stop block is fixedly arranged in the slot of a common screw, which causes the slot to be changed into an irregularly-shaped slot different from a common slot, so that a common screwdriver can not be inserted in the slot; therefore, the screw is protected from being dismounted via a common screwdriver, and the use safety of the screw is fully ensured.

Description

A kind of screw with tamper structure

Technical field

The utility model relates to a kind of screw, particularly relates to a kind of screw with tamper structure, belongs to fastener areas.

Background technique

It is Placement very commonly used in the Machine Design that screw connects, most of screws are standard piece, as long as adopt the screw-driver that matches just can mount and dismount, adopt straight screwdriver to open as slotted head screw, cruciform slot screw adopts Phillips screwdriver to open, but for cruciform slot screw, adopt straight screwdriver also can open, do not have Phillips screwdriver so reliable though straight screwdriver is twisted.During especially for the connection of some strength member, need prevent that mistake dismounting or other people from will dismantling, this class standard screw just can not satisfy its needs.

Summary of the invention

The purpose of this utility model provides a kind of screw with tamper structure that can prevent the dismounting of normal screws cutter.

The purpose of this utility model can realize by following technical proposal: a kind of screw with tamper structure, comprise the nail body and the head of a nail that are solidly fixed, the surface of described nail body has screw thread, the described head of a nail is positioned at an end of nail body, and on the exterior edge face of the head of a nail, has the slot that screw-driver is inserted, it is characterized in that described slot is made up of some straight troughs, and at least one straight trough, be installed with the block that can make this straight trough blocking-up.

This screw is installed with block in the slot of plain screw (as slotted head screw, cruciform slot screw etc.), slot is made up of some straight troughs, this block is blocked at least one straight trough, thereby make this slot become special-shaped groove, if adopt common extracting tool, be difficult to plug and dismantle, thereby fully guaranteed the Security of screw with this abnormal shape groove.

In above-mentioned screw with tamper structure, described slot is made up of the straight trough that intersects more than two or two, and described block is located at the intersection of each bar straight trough.Because block is located at the intersection of each bar straight trough, thereby cuts off each bar straight trough, helps improving the tamper effect.

In above-mentioned screw with tamper structure, the intersection of described each bar straight trough is positioned at head of a nail center.Feasible stressed evenly with the matching used Full dog point socket set cutter of this screw, be convenient to fast quick-detach.

In above-mentioned screw with tamper structure, described slot intersects cross by two straight troughs, and described block is positioned at criss-crossing place.This screw is set up a block in criss-crossing place of cruciform slot screw, and cruciform slot screw is used quite extensive, is easy to installation and removal, and is easily manufactured, is easy to promote.

In above-mentioned screw with tamper structure, the described block and the head of a nail are made one.This structure can be simplified installation.

In above-mentioned screw with tamper structure, the outer side surface of described block is mutually concordant with the exterior edge face of the head of a nail.When reality was made, as long as reserve the position of a block at the head of a nail center of plain screw, fluting gets final product then, and was quite convenient.

Compared with prior art, bolt structure of the present utility model is simple, easy to make, practical, it only sets firmly a block in the slot of plain screw, and this block becomes slot to be different from the special-shaped groove of common slot, make the normal screws cutter can't insert slot, thereby effectively prevent the dismounting of normal screws cutter, fully guaranteed the safety in utilization of this screw, particularly particularly outstanding in some important joint.

Description of drawings

Fig. 1 is the schematic perspective view that the utlity model has the screw of tamper structure.

Fig. 2 is the cross-sectional schematic that the utlity model has the screw of tamper structure.

Fig. 3 is that the A of Fig. 2 is to structural representation.

Fig. 4 is second kind of inserting slot construction schematic representation with screw of tamper structure.

Fig. 5 is the inserting slot construction schematic representation of the third screw with tamper structure.

Among the figure, 1 nail body; The 1a screw thread; 2 heads of a nail; The 2a straight trough; The 2b block.

Embodiment

Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.

Embodiment one

As Fig. 1, Fig. 2 and shown in Figure 3, this screw comprises the nail body 1 and the head of a nail 2 that is solidly fixed, the surface of nail body 1 has screw thread 1a, the head of a nail 2 is positioned at an end of nail body 1, and on the exterior edge face of the head of a nail 2, has the slot that screw-driver is inserted, slot intersects cross by two straight trough 2a, is fixed with the block 2b that makes one with the head of a nail 2 in criss-crossing place, and the outer side surface of block 2b is equal with the exterior edge face of the head of a nail 2.

When reality is made, as long as reserve the position of a block 2b at the head of a nail 2 centers of cruciform slot screw, fluting gets final product then, block 2b makes this cruciform slot screw become a kind of special-shaped screw, this special-shaped screw need adopt the Full dog point socket set cutter that matches with it, obviously, when open in criss-crossing place of Phillips screwdriver one with groove that this block 2b matches after can become the Full dog point socket set cutter of this special-shaped screw.

Embodiment two

As shown in Figure 4, structure of this screw and embodiment's one structure is basic identical, and its difference only is the shape of slot.The slot of screw only is made up of a straight trough 2a who passes the head of a nail 2 centers in this example, is fixed with a block 2b at the middle part of straight trough 2a, and this block 2b protrudes the exterior edge face of the head of a nail 2, and straight trough 2a is cut off two sections that become not communicate.

Embodiment three

As shown in Figure 5, the structure of this screw is identical with embodiment one and embodiment's two basic structure, and its difference is the shape of slot.The slot of screw intersects chevron shaped straight trough 2a by two and forms in this example, and the intersection of two straight trough 2a is fixed with the block 2b that makes one with it away from the head of a nail 2 centers in its intersection, and this block 2b makes two straight trough 2a form splayed configuration.

Certainly, slot also can be made up of the straight trough 2a more than two, so that make the screw of tamper better effects if.

Claims (6)

1. screw with tamper structure, comprise the nail body (1) and the head of a nail (2) that are solidly fixed, the surface of described nail body (1) has screw thread (1a), the described head of a nail (2) is positioned at an end of nail body (1), and on the exterior edge face of the head of a nail (2), has the slot that screw-driver is inserted, it is characterized in that described slot is made up of some straight troughs (2a), and at least one straight trough (2a), be installed with the block (2b) that can make this straight trough (2a) blocking-up.

2. the screw with tamper structure according to claim 1 is characterized in that, described slot is made up of the straight trough (2a) that intersects more than two or two, and described block (2b) is located at the intersection of each bar straight trough (2a).

3. the screw with tamper structure according to claim 2 is characterized in that, the intersection of described each bar straight trough (2a) is positioned at the head of a nail (2) center.

4. the screw with tamper structure according to claim 2 is characterized in that, described slot intersects cross by two straight troughs (2a), and described block (2b) is positioned at criss-crossing place.

5. according to arbitrary described screw of claim 1-4, it is characterized in that described block (2b) is made one with the head of a nail (2) with tamper structure.

6. the screw with tamper structure according to claim 5 is characterized in that, the outer side surface of described block (2b) is mutually concordant with the exterior edge face of the head of a nail (2).

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