CN102562754B

CN102562754B - Fastener, driving piece matched with fastener and punch forming fastener

Info

Publication number: CN102562754B
Application number: CN201010609110.XA
Authority: CN
Inventors: 张光峰
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2010-12-28
Filing date: 2010-12-28
Publication date: 2014-04-23
Anticipated expiration: 2030-12-28
Also published as: CN102562754A

Abstract

The invention provides a fastener which comprises a thread part and a head part, wherein the head part is coaxially connected with one end of the thread part; the head part is provided with a plurality of detaching grooves which are distributed at the periphery of the head part along the radial direction; and the plurality of detaching grooves are not communicated with one another. An end face of the head part far away from the thread part is an arc end face. The detaching grooves are opened on the arc end face. Each detaching groove includes two side walls, a connection wall and a bottom wall. The two side walls are in radial parallel to the head part. Two side edges of the bottom wall are respectively slidingly connected to the two side walls. The connection wall is roughly in an arc shape and faces the outside of the head part. The both ends of the connection wall are respectively in arc transition connection with the two side walls. And the bottom of the connection wall is in sliding connection with the bottom wall. The invention also provides a driving piece matched with the fastener and a punch forming the fastener. It is not easy to detach the detaching grooves by common detaching tools, so that the anti-detaching requirement of the device with a special structure or special installing requirements can be met.

Description

The punching pin of fastening piece, the actuator being mated and this fastening piece of moulding

Technical field

The actuator that the present invention relates to a kind of fastening piece, coordinate with this fastening piece and the punching pin of this fastening piece of moulding.

Background technique

In modern mechanical manufacturing, between mechanism's part, often by fastening piece, interconnect.Common fastening piece comprises socket head screw, interior hexagonal flower shape screw, cross grooved screw, straight groove type screw etc., such fastening piece generally includes screw section and is located at the head of this one end, screw section, on this head, away from approximate mid-section position correspondence on the end face of screw section, is concaved with dismounting groove.These fastening pieces have all become general in the industry standard piece gradually, during use by with the supporting extracting tool of these fastening pieces as cross-head screwdriver, straight screwdriver, Phillips screwdrivers etc. are used together, can be easily, dismantle rapidly, thereby realize interfixing or separating of the fastening multiple mechanisms part of fastening piece.

But special or be equipped with the device of specific demand for some structures, not quick detachable after requiring to adopt fastening piece fastening, now, traditional standard fasteners just cannot meet matching requirements.

Summary of the invention

In view of the foregoing, be necessary to provide one not easily detachable fastening piece, and the punching pin of a kind of actuator coordinating with this fastening piece and this fastening piece of moulding is provided.

A kind of fastening piece, the head that it comprises screw section and is coaxially connected on one end, screw section, this head offers multiple dismounting grooves, the plurality of dismounting groove is radially laid in the periphery of head, and the plurality of dismounting groove is not communicated with mutually, head is curved end away from the end face of described screw section, dismounting groove is opened on curved end, each dismounting groove comprises two sidewalls, connecting wall and diapire, two sidewalls and head radial parallel, the both sides of the edge of diapire are connected with two smooth-sided respectively, connecting wall is roughly semicircle arcuation and headward outside, its two ends are connected with two sidewall arc transition respectively, and connecting wall bottom and diapire smooth connection.

A kind of actuator, it comprises bar portion and drive portion, wherein drive portion has the external frame matching with the dismounting groove structure of above-mentioned fastening piece.

A kind of punching pin, it has drift, and this drift has the external frame matching with the dismounting groove structure of above-mentioned fastening piece.

Because the dismounting groove on fastening piece is located at the periphery of head and is not communicated with mutually, thereby thereby use common extracting tool to be difficult for being pulled down as cross-head screwdriver, straight screwdriver, Phillips screwdriver etc. can not coordinate or not have Point of Strength, thereby it is special or be equipped with the Anti-dismantling requirement of the device of specific demand to have met structure.

Accompanying drawing explanation

Fig. 1 is the fastening piece of embodiment of the present invention and the stereogram of actuator.

Fig. 2 is the stereogram of fastening piece in Fig. 1.

Fig. 3 is the stereogram of actuator in Fig. 1.

Fig. 4 is the stereogram of the punching pin of fastening piece in moulding Fig. 1.

Primary component symbol description

Fastening piece	100
		Head	11
Screw section	13
		Curved end	111
Dismounting groove	113
		Screw thread	131
Sidewall	1131
		Connecting wall	1132
Diapire	1133
		Actuator	200

Bar portion	21
		Drive portion	23
Main body	211
		Grip part	213
Driving gear	231
		Fitting surface	2311
Support side	2313
		End face	2315
Punching pin	300
		Body	31
Drift	33
		Groove	331
Punching press sword	332

Embodiment

The actuator being used in conjunction with to fastening piece of the present invention, with this fastening piece below in conjunction with the drawings and the specific embodiments and the punching pin of this fastening piece of moulding are described in further detail.

Refer to Fig. 1 and Fig. 2, the screw section 13 that fastening piece 100 comprises head 11 and is connected with head 11.

It is roughly discoid that head 11 is, and itself and screw section 13 coaxially join.Head 11 is curved end 111 away from one end of screw section 13, offers multiple dismounting grooves 113 on curved end 111.Multiple dismounting grooves 113 are radially evenly laid in the periphery of head 11, and each dismounting groove 113 communicates with the periphery of head 11 respectively away from one end of head 11 central authorities, the other end radially extends to respectively near the medial axis of head 11, but do not intersect on the medial axis of curved end 111 of head 11, multiple dismounting grooves 113 are not communicated with mutually.In the present embodiment, head 11 comprises that four 113, four of grooves of dismounting dismounting grooves 113 are evenly laid in contiguous peripheral position place on the curved end 111 of head 11, relative between two, and is not communicated with mutually.

Each dismounting groove 113 is strip, comprises two sidewalls parallel with the radial direction of head 11 1131, connecting wall 1132 and a diapire 1133.Connecting wall 1132 is roughly semicircle arcuation, and its two ends are connected with one end arc transition of headward 11 medial axis direction of two sidewalls 1131 respectively.Diapire 1133 is fillet smooth connection with two side 1131 and connecting wall 1132.

Screw section 13 is rod-like structure, offers screw thread 131 on it.In the present embodiment, curved end 111 is towards the direction projection away from screw section 13.

Refer to Fig. 1 and Fig. 3, the actuator 200 being used in conjunction with fastening piece 100 comprises bar portion 21 and is located at the drive portion 23 of bar portion 21 ends.Bar portion 21 is roughly multidiameter shaft shape, comprises main body 211 and is connected in the grip part 213 of main body 211 one end.Drive portion 23 is roughly cylindrical shape, and its relative grip part 213 is axially convexly set in the other end of main body 211, and the diameter of axle size of drive portion 23 is greater than the diameter of axle size of main body 211.Multiple dismounting grooves 113 on the terminal surface of drive portion 23 on corresponding head 11 radially convex with multiple driving gears 231.In the present embodiment, drive portion 23 comprises four driving gears 231, and these four driving gears 231 are evenly laid on the terminal surface of drive portion 23 and contiguous peripheral position place, relative between two.Each driving gear 231 is all bar shaped bulk, and structure is mated mutually with the dismounting groove 113 on head 11.The connecting wall 1132 of one of the corresponding fastening piece 100 of each driving gear 231 dismounting groove 113, two sidewalls 1131 and diapire 1133 be respectively equipped with semicircular arc roughly fitting surface 2311, support side 2313 and end face 2315 with interconnective two of the two ends of fitting surface 2311, fitting surface 2311 and two supports side 2313 for fillet is connected, and end face 2315 and fitting surface 2311 and two support side 2313 and be fillet and be connected.

Refer to Fig. 4, the drift 33 that comprises body 31 and be recessed to form from body 31 one end for the punching pin 300 of forming fastener 100.Body 31 is cylindrical structure, certainly also can be the rod-like structure that cross section is rectangle or other shapes.The concrete structure of drift 33 is corresponding with dismounting groove 113 structures of the head 11 of fastening piece 100, and it is included in groove 331 and is located at the punching press sword 332 of the multiple dentation structures on groove 331 perisporiums.Punching press sword 332 is along the circumferential direction uniformly distributed.The both sides of punching press sword 332 and groove 331 perisporiums and diapire smooth connection.In present embodiment, punching press sword 332 numbers are four, are distributed in the perisporium place of groove 331, and relative between two.

Please refer to Fig. 1 to Fig. 4, when using actuator 200 to drive fastening piece 100, the drive portion 23 of actuator 200 inserts in the dismounting groove 113 of head 11 of fastening piece 100, and wherein the fitting surface 2311 of drive portion 23 and the connecting wall 1132 of fastening piece 100 coordinate.Support side 2313 and cooperatively interact and apply the power that pushes of circumferencial direction by driving gear 231 oppose side walls 1131 with sidewall 1131, thereby make fastening piece 100 synchronize rotation with actuator 200.

While using punching pin 300 forming fastener 100, utilize drift 33 to carry out punching press to head 11, and then mold the dismounting groove 113 of head 11.

The quantity that is appreciated that the dismounting groove 113 of fastening piece 100 is not limited to four in present embodiment, and they also can three or five, six etc., and the concrete quantity of dismounting groove 113 can be determined according to the actual demand of design.

Accordingly, the concrete quantity of the driving gear 231 of actuator 200 is also not limited to four in present embodiment, it can be also, three, five or six etc., and the concrete quantity of driving gear 231 and structure are mated quantity and the structure correspondence of the dismounting groove 113 of the fastening piece 100 of use.

In like manner, the quantity of the punching press sword 332 of punching pin 300 is also not limited to four in present embodiment, it can be also three, five or six etc., the concrete quantity of punching press sword 332 and structure to be punched with it quantity and the structure of dismounting groove 113 of fastening piece 100 corresponding.

Because the dismounting groove 113 on fastening piece 100 does not intersect at the medial axis of head 11, thereby use the common extracting tool cannot to be pulled down as cross-head screwdriver, straight screwdriver, Phillips screwdriver etc., thereby it is special or be equipped with the Anti-dismantling requirement of the device of specific demand to have met structure.In addition, because the driving gear 231 of actuator 200 and the dismounting groove 113 of fastening piece 100 coordinate, and dismounting groove 113 is radially laid in the periphery of head, therefore the arm of force is longer during dismounting, use less power can produce larger moment, thereby there is labour-saving effect.The driving gear 231 of actuator 200 support sidewall 1131 that side 2313 is held in dismounting groove 113 to drive fastening piece 100 while rotating, supporting side 2313 is 0 degree with sidewall 1131 for face contacts and drives angle, therefore can transmit Maximum Torque, have compared with high driving efficiency.The diapire 1133 of dismounting groove 113 is smooth connection with sidewall 1131 and connecting wall 1132, easily make unmatched extracting tool skid off in dismounting groove 113, there is certain anti-disassembling function, in addition, it also can prevent that stress is concentrated, reduces wearing and tearing and scraping while coordinating with actuator 200.In addition, by multiple dismounting grooves 113 are set, can reduce the active force that each dismounting groove 113 bears, thereby reduce the wearing and tearing in unloading process, increase the service life.

The bar portion that is appreciated that actuator 200 also can be crank throw shape, and the grip part 213 on it is coaxially connected with main body 211.

In addition, those skilled in the art also can do other and change in spirit of the present invention, and certainly, the variation that these do according to spirit of the present invention, all should be included in the present invention's scope required for protection.

Claims

1. a fastening piece, the head that it comprises screw section and is coaxially connected on one end, described screw section, described head offers multiple dismounting grooves, it is characterized in that: described multiple dismounting grooves are radially laid in the periphery of head, and multiple dismounting grooves are not communicated with mutually, described head is curved end away from the end face of described screw section, described dismounting groove is opened on described curved end, each dismounting groove comprises two sidewalls, connecting wall and diapire, described two sidewalls and described head radial parallel, the both sides of the edge of described diapire are connected with described two smooth-sided respectively, described connecting wall is roughly semicircle arcuation and towards described head outside, its two ends are connected with described two sidewall arc transition respectively, and described connecting wall bottom and described diapire smooth connection.

2. fastening piece as claimed in claim 1, is characterized in that: described dismounting groove communicates with the periphery of described head away from central one end of head.

3. fastening piece as claimed in claim 1, is characterized in that: described multiple dismounting grooves are evenly laid on the periphery of described head.

4. fastening piece as claimed in claim 1, is characterized in that: the curved end smooth connection of described connecting wall, sidewall and diapire and described head.

5. an actuator, the drive portion that it comprises bar portion and is connected with bar portion, is characterized in that: described drive portion have with claim 1 to 4 in the dismounting groove structure of fastening piece matches described in any one external frame.

6. a punching pin, it has drift, it is characterized in that: described drift have with claim 1 to 4 in the dismounting groove structure of fastening piece matches described in any one external frame.

7. punching pin as claimed in claim 6, is characterized in that: described punching pin also comprises body, and described drift is arranged with in one end of described body and comprises groove and be located at the punching press sword of the multiple dentation structures on the perisporium of described groove.