CN100404886C

CN100404886C - Self-positioning expansion adapter sleeve

Info

Publication number: CN100404886C
Application number: CNB2005100573822A
Authority: CN
Inventors: 尹明善; 蔡亮
Original assignee: Lifan Industry Group Co Ltd
Current assignee: Lifan Technology Group Co Ltd
Priority date: 2005-11-14
Filing date: 2005-11-14
Publication date: 2008-07-23
Anticipated expiration: 2025-11-14
Also published as: CN1769721A

Abstract

The present invention relates to a self-positioning expansion adapter sleeve between plate-shaped parts, which is provided with a head (1), a neck (2) and a back end (3), wherein the cross sections of the head (1) and the neck (2) are polygonal, the back end (3) is circular, the neck (2) forms a taper with a small front end in a shaft direction, the outer diameter of the head (1) is larger than the outer diameter of the front end of the neck (2), the end face of the back end (3) is provided with a counter bore, a taper pylome with the small front end is arranged between the bottom of the counter bore and the end face of the head (1), the head (1) and the neck (2) are evenly divided into 3 to 6 pieces in a cycle direction by a radial groove. The present invention makes the connection operation between two plate-shaped parts more convenient, connection reliable, installation and disassembling convenient, cost reduced and appearance beautiful.

Description

Self-positioning expansion adapter sleeve

Technical field

The present invention relates to the connector element between two parts, especially the connector element between plate parts.

Background technique

At present, when the surface covering parts of assembling motorcycle, electric bicycle, clamp nut 10 and bolt 11 ways of connecting (as Fig. 1) are adopted in connection between the two boards shape part usually, though this Placement has join strength preferably, but need to design connection journal stirrup 8a on a plate parts 8 therein, need snap in the U-shaped card base 10a of clamp nut 10 connecting journal stirrup 8a during installation, structure is complicated, can increase mould manufacture difficulty and cost, and the operating space that needs when installing is big, if assembly space is narrow and small, just make assembling work become difficult.Direct in addition in addition use card falcon 12 carries out clamping, card falcon 12 is made of one (as Fig. 2) with plate parts 9 wherein, and this Placement can only be used for the smoothness of control

connection plate parts

8 and 9 as a kind of complementary connection usually, the assurance seam is even, but join strength is not enough.

Summary of the invention

The purpose of this invention is to provide a kind of easy-to-operat, connect reliably, mount and dismount all self-positioning expansion adapter sleeve very easily.

For this reason, self-positioning expansion adapter sleeve of the present invention has head, neck and rearward end, wherein head and neck cross section are polygonal, the rearward end cross section is circular, and neck is the little taper of front end in the axial direction, and head outer diameter is greater than neck front end external diameter, and the end face of rearward end is provided with counterbore, be provided with the little conical through-hole of front end between counterbore bottom and head end, head and neck upwards evenly are divided into 3～6 by radial groove in week.

Head and neck cross section are polygonal among the present invention, be preferably the regular polygon on 3～6 limits, attachment hole on two plate parts also is set to corresponding and the polygonal hole identical with head size, thereby connecting sleeve relatively rotates in attachment hole when preventing to assemble.Because connecting sleeve head and neck upwards evenly are divided into 3～6 by radial groove in week, make the head of connecting sleeve and neck have elasticity, can easily insert the attachment hole on two plate parts after header suppression diminishes.Screw in tapping screw then in conical through-hole, head and neck are extruded distortion, after the neck deformation with plate parts on the attachment hole inwall fit the location of finishing substantially horizontal between two plate parts.Simultaneously, with rearward end two plate parts are compressed in Vertical direction after the head dilatancy, connecting sleeve can not come off from attachment hole.During dismounting, screw out tapping screw, the head of connecting sleeve and neck resilience are shunk, thereby can take out from attachment hole smoothly.

The invention has the beneficial effects as follows: make the attended operation between two plate parts convenient, connect reliably, mount and dismount all easily, and can reduce cost, make beautiful shape.

Description of drawings

Fig. 1 is the scheme of installation that adopts clamp nut and bolt that two plate parts are connected at present;

Fig. 2 is the scheme of installation that adopts the card falcon two plate parts to be carried out clamping at present;

Fig. 3 is a structural representation of the present invention;

Fig. 4 is the left view of Fig. 3;

Fig. 5 is the right elevation of Fig. 3;

Fig. 6 is the A-A sectional view (rotation) of Fig. 4;

Fig. 7 is that the B of Fig. 4 is to view (rotation);

Fig. 8 is a scheme of installation of the present invention.

Embodiment

Extremely shown in Figure 7 as Fig. 3, self-positioning expansion adapter sleeve of the present invention has head 1, neck 2 and rearward end 3, wherein head 1 and neck 2 cross sections are square, rearward end 3 cross sections are circular, and neck 2 is the little taper of front end in the axial direction, head 1 external diameter is greater than neck 2 front end external diameters, the end face of rearward end 3 is provided with counterbore 4, be provided with the little conical through-hole of front end 5 between counterbore 4 bottoms and head 1 end face, head 1 and neck 2 upwards evenly are divided into four by radial groove 6 in week.

In conjunction with Fig. 6 and Fig. 7 as can be seen: radial groove 6 runs through the end face of counterbore 4 bottoms and head 1 in the axial direction, and the part that is positioned at rearward end 3 is a straight trough, the part that is positioned at head 1 and neck 2 is the little cone tank of front end, the part that radial groove 6 is positioned at head 1 and neck 2 outer end diametrically is an enlarging shape, enlarging is rectangular, the demoulding when being convenient to moulding.

The cross section of head 1 and neck 2 also can be made equilateral triangle, regular pentagon or regular hexagon.

Referring to Fig. 8, during installation head 1 aimed at and inserts the square attachment hole on two

plate parts

8 and 9, in conical through-hole 5, screw in tapping screw 7 then, head 1 and neck 2 are extruded distortion, attachment hole inwall on neck 2 distortion backs and

plate parts

8 and 9 is fitted, finish the location of substantially horizontal between two

plate parts

8 and 9, with rearward end 3 two

plate parts

8 and 9 are compressed in Vertical direction after head 1 dilatancy, connecting sleeve can not come off from attachment hole.During dismounting, screw out tapping screw 7, the head 1 of connecting sleeve and neck 2 resiliences are shunk, thereby can take out from attachment hole smoothly, and are convenient, fast.

Claims

1. self-positioning expansion adapter sleeve, it is characterized in that this connecting sleeve has head (1), neck (2) and rearward end (3), wherein head (1) and neck (2) cross section are polygonal, rearward end (3) cross section is circular, and neck (2) is the little taper of front end in the axial direction, head (1) external diameter is greater than neck (2) front end external diameter, the end face of rearward end (3) is provided with counterbore (4), be provided with the little conical through-hole of front end (5) between counterbore (4) bottom and head (1) end face, head (1) and neck (2) upwards evenly are divided into 3～6 by radial groove (6) in week.

2. self-positioning expansion adapter sleeve according to claim 1, it is characterized in that described radial groove (6) runs through the end face of counterbore (4) bottom and head (1) in the axial direction, and the part that is positioned at rearward end (3) is a straight trough, and the part that is positioned at head (1) and neck (2) is the little cone tank of front end; The part that radial groove (6) is positioned at head (1) and neck (2) outer end diametrically is an enlarging shape.

3. self-positioning expansion adapter sleeve according to claim 1 is characterized in that described head (1) and neck (2) cross section are the regular polygon on 3～6 limits.