CN2448982Y

CN2448982Y - Concave head screw

Info

Publication number: CN2448982Y
Application number: CN 00249951
Authority: CN
Inventors: 高显智
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-11-07
Filing date: 2000-11-07
Publication date: 2001-09-19
Anticipated expiration: 2010-11-07

Abstract

The utility model relates to a concave head screw, which is characterized in that the center of the bottom layer of the concave surface of the concave head screw is a square groove, and the longitudinal and the transverse angled ends of the square groove are dug with concave slots having a medium depth; the concave slots are formed into a cross shape, and the upper part of the longitudinal concave slot is provided with a straight groove. The concave head screw can be tightly screwed or opened and disassembled by a screwdriver in any shape.

Description

Concave head screw

The utility model is a kind of Concave head screw, means especially that a kind of screwdriver that utilizes arbitrary type body all can be kissed to connect the Concave head screw that screws togather, and screwdriver that need not standby multiple type body is conveniently saved the screwdriver time of changing again.

Present common on the market Concave head screw, be applied to the binding member of two articles, the socket screw header structure that generally is spirally connected is divided into yi word pattern Concave head screw A (as Fig. 1,2), cross Concave head screw B (as Fig. 3,4), square Concave head screw C (as Fig. 5,6), each Concave head screw A, B, C are when being spirally connected, though can both reach spiral shell acts on admittedly, but in the use, still exist following various situation to take place:

1. because yi word pattern groove A1, cross groove B1, square groove C1 on yi word pattern Concave head screw A, cross Concave head screw B and the square Concave head screw C, need secondary operations, could will cut ditch cut establish complete, on working process, the trouble expend time in again.

2. operator need the screwdriver of the standby groove that is consistent with it when construction, cause the inconvenience of carrying.

3. when if the groove of the desire Concave head screw that will be spirally connected is not inconsistent with screwdriver that hand is being held, need to seek in addition the screwdriver that replacing another and this Concave head screw groove meets, at this moment, not only waste the engineering time to bother again.

4. because of not carrying the screwdriver that meets the Concave head screw groove, in construction, bother, person very, if do not carry when complete, then be spirally connected and pause in conjunction with still being forced on the engineering, one influences speed of application, and two cause cost waste (need expend other darg sky again, could construct and finish).

Commonly using Concave head screw needs to transfer by the screwdriver spiral shell of the groove that is consistent with it, the inconvenient operation that screws togather, and also still deficiency is called perfect design kenel.Therefore, the scarce fraud with regard to the structure of commonly using Concave head screw is now given birth to ought to have a good structure setting to be improved.

Main purpose of the present utility model provides a kind ofly utilizes arbitrary type body screwdriver all can reach the Concave head screw that spiral shell acts on admittedly, also use the bottom square groove that the screwdriver of arbitrary type body established by Concave head screw, the chase of criss-crossing, one by one to one of upper strata font groove, it is solid to form the spiral shell that coincide, use the screwdriver of arbitrary type body in order to operator, just can finish the work of being spirally connected with driving a light carriage on a familiar road, save time and convenient, more need not carry the screwdriver of multiple groove.

The purpose of this utility model is achieved in that

A kind of Concave head screw, concave face is established in this Concave head screw top, it is characterized in that these concave face bottom central authorities are the square groove, square groove vertical, horizontal angle end respectively digs laterally and is provided with the moderate chase of the degree of depth, make chase form the kenel of criss-crossing, dig in vertical chase top again and establish the yi word pattern groove that its degree of depth extends to concave face.

The structural feature, the performance that below cooperate embodiment and accompanying drawing formula thereof explanation the utility model.

Fig. 1: commonly use yi word pattern Concave head screw plan view.

Fig. 2: Fig. 1 plan view.

Fig. 3: commonly use cross Concave head screw plan view.

The plan view of Fig. 4: Fig. 3.

Fig. 5: commonly use square Concave head screw plan view.

The plan view of Fig. 6: Fig. 5.

Fig. 7: the stereogram of the utility model.

Fig. 8: the plan view of the utility model.

Fig. 9: the plan view of the utility model.

A kind of Concave head screw of the utility model, see also Fig. 7, shown in 8, this Concave head screw 1 is shaped to via pressing and establishes concave face 10 on it, concave face 10 bottoms central authorities are square groove 11, square groove 11 is vertical, the lateral angle end respectively digs laterally and is provided with the moderate chase of the degree of depth 110,111 and the degree of depth extend to the chase 112 of concave face 10,113, make chase 110,111,112,113 form the kenel of criss-crossing, again in vertical chase 110, dig on 111 and establish the yi word pattern groove 12 (as Fig. 9) that its degree of depth extends to concave face 10, make Concave head screw 1 all can utilize the solid or unlatching of screwdriver spiral shell of arbitrary type body.

The design of the utility model socket screw header structure is being spirally connected when coincide implementing with screwdriver, and decapacitation is got rid of outside the inconvenience of practising the user, also can provide practise that the user can't reach and advantage, be described below:

1. the square groove of the bottom central authorities of the utility model screw terminal and top right-angled intersection thereof Chase and yi word pattern groove all can utilize the screwdriver of arbitrary type body, form kiss connect spiral shell solid or Open shape, can reach and be spirally connected, its construction is by pretending when fast and convenient.

2. in the construction of recessed spiral shell head of the utility model, allow operating personnel's easy construction, again need not be standby With the screwdriver of multiple-type body, the saving of labor saves time again, and the construction working fate more avoids waste.

Claims

1, a kind of Concave head screw, concave face is established in this Concave head screw top, it is characterized in that these concave face bottom central authorities are the square groove, square groove vertical, horizontal angle end respectively digs laterally and is provided with the moderate chase of the degree of depth, make chase form the kenel of criss-crossing, dig in vertical chase top again and establish the yi word pattern groove that its degree of depth extends to concave face.