CN212287427U

CN212287427U - Screwdriver head and clamping piece

Info

Publication number: CN212287427U
Application number: CN202021436721.4U
Authority: CN
Inventors: 郑原敏
Original assignee: Wenzhou Jinsanyuan Tool Co ltd
Current assignee: Wenzhou Jinsanyuan Tool Co ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-01-05
Anticipated expiration: 2030-07-20

Abstract

The utility model discloses a screwdriver head and a clamping piece, wherein the screwdriver head comprises a first head part, a first connecting part and a first fixing part, the first head part is connected with the first fixing part through the first connecting part, the cross section of the first fixing part is regular hexagon, and at least three sides of the first fixing part are provided with first grooves; the utility model discloses the centre gripping is effectual, the aesthetic property is high, torsion resistance is big.

Description

Screwdriver head and clamping piece

Technical Field

The utility model relates to a criticize head and holder.

Background

The bit, which is commonly referred to as a screwdriver bit, is mounted to a hand drill or hammer for driving a screw. But current batch head is installed on electric tools such as electric hand drill or electric hammer, tightly relies on the cross-section of batch head self to reach the fastening effect, and this kind of fixed knot structure is fixed insecure, can take place to become flexible, influences actual result of use.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a criticize head and holder.

The utility model discloses the technical scheme who solves its technical problem and adopt is: the utility model provides a batch head and holder, wherein, includes first head, first connecting portion and first fixed part, and first head is connected with first fixed part through first connecting portion, and the cross-section of first fixed part is regular hexagon, is equipped with first recess on the at least three side of first fixed part.

Adopt the setting of first recess for electric tool at the in-process of centre gripping, the centre gripping head can be better with criticize first monolithic stationary, make fixed area of contact between the two bigger, radial fixed depth is bigger, thereby it is strong to have realized the centre gripping effect, at the rotation in-process, be difficult for taking place trouble such as drops.

The number of the first grooves is three, and the first grooves are arranged on the side face of the first fixing portion at intervals.

The three first grooves are arranged, so that the positioning and fixing effects are achieved in the fixing process, a triangle fixing structure is formed at the positions of the three first grooves, an equilateral triangle is formed at the position of the three first grooves, and the fixing strength is higher through the fixing mode.

The side face of the first fixing part is provided with a first plane and a second plane, the first plane is connected with the second plane through a first groove, and the first plane and the second plane occupy one tenth to one fifth of the whole side face.

The two planes are arranged, the whole side face is not directly made into a groove, firstly, the strength of the side face can be enhanced by the two planes in consideration of the stability after clamping, the size of the cross section of the fixing part is reduced due to the arrangement of the groove, if the whole side face is the groove, when the torsion is overlarge, the fracture is easy to occur, and the arrangement of the two planes ensures that the torsion has a buffering effect and prevents overlarge internal stress, so that the fracture occurs in the fixing part; two, processing is convenient, through axial processing recess, the space is left to both sides, is difficult for breaking two adjacent sides, directly causes criticizing first whole damage, and whole side all is the recess moreover, needs to make the tie point of recess both ends and two adjacent sides tangent, and the processing precision is high, and the processing difficulty forms the substandard product very easily.

Wherein, the bottom surface of the first groove is provided with a wear-resistant rib.

The setting of wear-resisting muscle for whole centre gripping effect is better.

Wherein, be equipped with first spigot surface on one side of first recess.

The arrangement of the first guide surface enables the screwdriver head to have a guide effect when extending into the electric tool.

The cross section of the second fixing part is regular hexagon, three second grooves are arranged on the side face of the second fixing part, the second grooves are arranged on the side face of the second fixing part at intervals, and the second grooves are located in the axial direction of the first grooves.

Adopt the setting of second fixed part, prevent in the use that operating personnel needs the batch head of different length, also can realize the centre gripping effect through the second fixed part. The second groove and the first groove are axially arranged, so that after fixation, the exposed length needs to be lengthened, the whole body only needs to be pulled out, and the rotating direction is not needed. Secondly, the sectional mode is adopted, the use of materials is reduced, the production cost is reduced, and meanwhile, the integral attractiveness is improved.

Wherein, the second recess is equipped with the second spigot surface towards first recess one side.

The second guide surface and the first guide surface are arranged correspondingly, and the guide effect is achieved.

The first connecting portion is provided with a reinforcing portion, and the cross-sectional size of the reinforcing portion is larger than that of the first connecting portion.

The setting of rib for prevent that torsion is stronger, improve holistic life.

Wherein, the first head is provided with wing teeth, and the side surfaces of the wing teeth are arranged in an arch shape.

Through the arched arrangement of the wing teeth, the first head portion can better stretch into the screw hole, the contact area is increased, and the screwdriver head can be better matched with the fastener.

Wherein, the wing tooth is parabola type, satisfies parabola equation Y =0.75X ^2+ 0.17.

By adopting the linear relation, the first head part is ensured to extend into the screw hole, and the side wall of the wing tooth can be attached to the side wall of the screw hole, so that the effect of attaching in a large area is realized, and the driving capability is improved. Moreover, when the first head part is in a cross structure, the first head part is in a snake-head-like shape when being observed from the side surface, and the wing teeth are novel in structure, attractive in appearance and good in practicability.

The utility model provides a clamping piece, wherein, includes foretell first and main part of criticizing, is equipped with first part and second part in the main part, is equipped with the through-hole on the first part, is equipped with three clamping part on the second part, and the second part cover is established on first part and is relative rotation setting, and three clamping part penetrates to the through-hole in along through-hole inner wall axial motion, and the clamping part offsets with the first recess or the second recess of criticizing the head and realizes the centre gripping effect.

The clamping part adopts this kind of setting, can rotate first part or second part for the centre gripping mouth that the clamping part formed changes, can cooperate not unidimensional batch head to use, and the clamping part closely laminates with first recess or second recess, makes the centre gripping effect better, and difficult emergence is slided.

Wherein, the clamping part is arranged in a fan shape, and a notch is arranged on the top surface of the clamping part.

The setting of breach for form the clearance setting in the centre gripping process, improve the radiating effect, guarantee in the use, difficult emergence is overheated to lead to cracked situation to take place. The top surface here refers in particular to the opposing surface of the three clamping portions.

Wherein, be equipped with first magnet and second magnet in the first part, first magnet is relative setting with the second magnet, and the through-hole is located between first magnet and the second magnet.

The two opposite magnets are arranged, so that the screwdriver heads positioned in the through holes have a magnetizing effect, and at the moment, the screwdriver heads do not need to be sleeved with the magnets, and the operation is simpler and more convenient.

Drawings

Fig. 1 is a front view of embodiment 1 of the present invention;

fig. 2 is a plan view of embodiment 1 of the present invention;

fig. 3 is a front view of embodiment 2 of the present invention;

fig. 4 is a plan view of embodiment 1 of the present invention;

fig. 5 is a plan view of the closed state of embodiment 1 of the present invention;

fig. 6 is a plan view of the embodiment 1 of the present invention cooperating with the batch head;

fig. 7 is a sectional view of a first member in embodiment 1 of the present invention.

Detailed Description

Example 1:

referring to fig. 1-2, a batch head includes a first head portion 1, a first connecting portion 2, a first fixing portion 3, and a second fixing portion 4, wherein the first head portion 1 is connected to the first fixing portion 3 through the first connecting portion 2, and the first fixing portion 3 is connected to the second fixing portion 4.

The first head 1 may be a straight shape, a cross shape or a quincunx shape, and the embodiment only takes the cross shape as an example. Four wing teeth 11 are arranged on the first head part 1, and the four wing teeth 11 are connected to form a cross shape. The side of wing tooth 11 is the arch setting, specifically is the parabola type, and the parabola equation satisfies Y =0.75X 2+0.17 here, and what need be noted here is that the interval scope of X is (-1, 1), guarantees the length of wing tooth 11 to control wholesale's holistic focus and stability, the height of hunch-up is injectd moreover, makes the side wall of wing tooth 11 better with the inner wall laminating of screw, reach the cooperation effect. By adopting the arrangement of the wing teeth 11, the first head part 1 integrally and better extends into the cross screw hole, the contact area is increased, and the screwdriver head is better matched with a fastener. Specifically, the first head part 1 extends into the screw hole, and the side wall of the wing teeth 11 can be attached to the side wall of the cross screw hole, so that the effect of large-area attachment is achieved, and the driving capacity is improved. And wing tooth 11 of this kind of setting, when first head 1 was cross structure, first head 1 was observed to the edgewise, and its shape is similar snake head shape, and novel structure, pleasing to the eye, practicality are good, have improved the holistic aesthetic property of batch head, for current batch head, regardless of aesthetic property or practicality, all improve greatly.

The first connecting portion 2 is provided with a reinforcing portion 21, and the cross-sectional dimension of the reinforcing portion 21 is larger than the cross-sectional dimension of the first connecting portion 2. Here rib 21 forms the round platform structure, for the protrusion setting, has increased first connecting portion 2's intensity, prevents in the use, and torsion too big results in breaking occur between first connecting portion 2 and the first head 1, improves holistic life.

The cross section of the first fixing part 3 is regular hexagon, so that the first fixing part 3 has six sides, at least three sides are provided with the first grooves 31, but in order to ensure the overall strength of the batch head, the number of the first grooves 31 is preferably three, and the three grooves are arranged on the sides at intervals, that is, one side is a plane, and the adjacent sides are provided with the first grooves 31. The three first grooves 31 are arranged, so that the positioning and fixing effects are achieved in the fixing process, and the positions of the three first grooves 31 form a triangle fixing structure, wherein the three first grooves 31 form an equilateral triangle, and the fixing strength is higher through the fixing mode.

The side surfaces of each specific first groove 31 are identical in structure, so that only one of the side surfaces is taken as an example. The side surface is provided with a first plane 32 and a second plane 33, the first plane 32 is connected with the second plane 33 through a first groove 31, and the first plane 32 and the second plane 33 occupy one tenth to one fifth of the whole side surface. The two planes are arranged, the whole side face is not directly made into a groove, firstly, the strength of the side face can be enhanced by the two planes in consideration of the stability after clamping, the size of the cross section of the fixing part is reduced due to the arrangement of the groove, if the whole side face is the groove, when the torsion is overlarge, the fracture is easy to occur, and the arrangement of the two planes ensures that the torsion has a buffering effect and prevents overlarge internal stress, so that the fracture occurs in the fixing part; two, processing is convenient, through axial processing recess, the space is left to both sides, is difficult for breaking two adjacent sides, directly causes criticizing first whole damage, and whole side all is the recess moreover, needs to make the tie point of recess both ends and two adjacent sides tangent, and the processing precision is high, the processing difficulty.

Further, a wear rib 312 is provided on the bottom surface of the first groove 31. The arrangement of the wear-resistant ribs 312 enables the overall clamping effect to be better.

Further, a first guiding surface 311 is disposed on one side of the first groove 31, where the first guiding surface 311 is disposed in the axial direction and faces the second fixing portion 4. The first guide surface 311 is provided to provide a guiding effect when the bit is inserted into the power tool.

The second fixing portion 4 and the first fixing portion 3 both have a fixing effect, and the difference therebetween is that the length of the second fixing portion 4 as a whole is at least three times, and preferably four times, the length of the first fixing portion 3 as a whole.

The cross section of the second fixing portion 4 is a regular hexagon, three second grooves 41 are provided on the side surface of the second fixing portion 4, the second grooves 41 are disposed on the side surface of the second fixing portion 4 at intervals, and the second grooves 41 are located in the axial direction of the first grooves 31. Adopt the setting of second fixed part 4, prevent in the use that operating personnel needs the batch head of different length, also can realize the centre gripping effect through second fixed part 4. The second groove 41 and the first groove 31 are axially arranged, so that after fixation, the exposed length needs to be lengthened, only the whole body needs to be pulled out, and the rotating direction is not needed. Secondly, the sectional mode is adopted, the use of materials is reduced, the production cost is reduced, and meanwhile, the integral attractiveness is improved.

Here, the side surface of the second groove 41 is the same as the side surface of the first groove 31, and two sides are also provided with a plane, so that the description is omitted here.

The second groove 41 is provided with a second guide surface 411 on the side facing the first groove 31. The second guide surface 411 and the first guide surface 311 are disposed correspondingly, and the guide effect is also achieved.

Further, it should be noted that the batch head in this embodiment is provided with two heads, that is, the batch head is provided with two first heads 1, two first fixing portions 3, and two second fixing portions 4, two ends of the batch head are symmetrically provided, and the first groove 31 and the second groove 41 are communicated in the same axial direction.

Adopt the setting of first recess 31 and second recess 41 for electric tool is at the in-process of centre gripping, the centre gripping head can be better with criticize first monolithic stationary, make fixed area of contact between the two bigger, radial fixed depth is bigger, thereby it is strong to have realized the centre gripping effect, at the rotation in-process, is difficult for taking place trouble such as coming off.

Example 2:

referring to fig. 3, the difference between embodiment 2 and embodiment 1 is that the lot header in this embodiment is a single-header arrangement, i.e., only one first header 1 is provided.

Example 3:

referring to fig. 4-7, a clamping member includes a batch head and a main body 5, and the structure of the batch head is described in detail in embodiment 1, and therefore not described herein.

The main body 5 is provided with a first part 6 and a second part 7, the second part 7 is sleeved on the first part 6 and is rotatably connected with the first part 6 and the second part, and the first part and the second part are in threaded connection. The size of the second part 7 is larger than the size of the first part 6. The first member 6 is provided with a through hole 61, and the through hole 61 is integrally formed through the first member 6. The second component 7 is provided with three clamping portions 71, the three clamping portions 71 are distributed in a circumferential array and have the same shape, the three clamping portions 71 penetrate into the through hole 61 and move axially along the inner wall of the through hole 61, a clamping opening 711 is formed at the top end of each clamping portion 71 and is used for clamping the batch head, and the clamping portions 71 abut against the first grooves 31 or the second grooves 41 of the batch head to realize the clamping effect. Here clamping part 71 specifically is fan-shaped setting, and is equipped with breach 712 on the top surface of clamping part 71, the setting of breach 712 for form the clearance setting in clamping process, improve the radiating effect, guarantee in the use, difficult emergence is overheated to lead to cracked situation to take place.

Further, a first magnet 62 and a second magnet 63 are arranged in the first component 6, the first magnet 62 and the second magnet 63 are oppositely arranged, and the through hole 61 is located between the first magnet 62 and the second magnet 63. The two opposite magnets are arranged, so that the screwdriver bit positioned in the through hole 61 has a magnetizing effect, and the screwdriver bit does not need to be sleeved with a magnetic ring, and the operation is simpler and more convenient. Here, the first magnet 62 and the second magnet 63 are both arranged in a circular ring, and the opposite surfaces of the first magnet 62 and the second magnet 63 have the same polarity, so as to form a magnetic field, thereby achieving the effect of magnetization.

The clamping part 71 is arranged in such a way, the first part 6 or the second part 7 can be rotated, so that the clamping port 711 formed by the clamping part 71 is changed and can be matched with heads of different sizes for use, and the clamping part 71 is tightly attached to the first groove or the second groove, so that the clamping effect is better, and the slipping is not easy to occur.

Claims

1. A bit, comprising: the first head part is connected with the first fixing part through the first connecting part, the cross section of the first fixing part is in a regular hexagon shape, and at least three side surfaces of the first fixing part are provided with first grooves.

2. A batch head as claimed in claim 1, wherein: the number of the first grooves is three, and the first grooves are arranged on the side face of the first fixing portion at intervals.

3. A batch head as claimed in claim 1, wherein: the side face of the first fixing part is provided with a first plane and a second plane, the first plane is connected with the second plane through a first groove, and the first plane and the second plane occupy one tenth to one fifth of the whole side face.

4. A batch head as claimed in claim 1, wherein: the cross section of the second fixing part is regular hexagon, three second grooves are arranged on the side face of the second fixing part, the second grooves are arranged on the side face of the second fixing part at intervals, and the second grooves are located in the axial direction of the first grooves.

5. A batch head as claimed in claim 1, wherein: the first connecting portion is provided with a reinforcing portion, and the cross-sectional dimension of the reinforcing portion is larger than that of the first connecting portion.

6. A batch head as claimed in claim 1, wherein: wing teeth are arranged on the first head, and the side surfaces of the wing teeth are arranged in an arch shape.

7. A bit as claimed in claim 6, wherein: the wing teeth are parabolic, and satisfy the parabolic equation Y =0.75X ^2+ 0.17.

8. A holder, characterized in that: the screwdriver head comprises the screwdriver head as claimed in any one of claims 1 to 7 and a main body, wherein the main body is provided with a first part and a second part, the first part is provided with a through hole, the second part is provided with three clamping parts, the second part is sleeved on the first part and is arranged in a relative rotation manner, the three clamping parts penetrate into the through hole and move axially along the inner wall of the through hole, and the clamping parts abut against the first groove or the second groove of the screwdriver head to realize a clamping effect.

9. A clip as set forth in claim 8, wherein: the clamping part is arranged in a fan shape, and a notch is arranged on the top surface of the clamping part.

10. A clip as set forth in claim 8, wherein: be equipped with first magnet and second magnet in the first part, first magnet is relative setting with the second magnet, and the through-hole is located between first magnet and the second magnet.