TWI411828B - Buckle structure - Google Patents

Abstract

A buckle structure includes a body, and a clasp. The clasp includes a ring surface and at least two buckles set on the ring surface. The body includes a hole used to provide a path for a camera head passing there through, at least two notches corresponding to the buckles, at least one elastic protrusion, and at least one location block. The notches, the elastic protrusion, and the location block are formed at the edge of the hole. The buckles pass through the corresponding notches and the camera head, the elastic protrusion, and the location block. The buckle structure avoids the eccentric error between the clasp and the camera head. Otherwise, the buckle structure is easy for disassembly.

Description

Clamping structure

The invention relates to a snap structure, in particular to a snap structure of a lens decorative ring.

The lens trim ring is mounted on the edge of the camera lens. In addition to improving the appearance of the camera, the lens decorative ring also protects the lens.

The existing lens decorative ring is generally mounted on the outer cover of the body by means of hot pressing, adhesive or double-sided adhesive fixing. All of the above methods have the following problems: 1. Due to the cumulative tolerance, the center of the lens decoration ring and the center of the lens will deviate during installation, which affects the appearance of the camera. When the degree of deviation is severe, the lens will be blocked by the lens decoration ring and cannot be extended. 2. The lens is not easy to disassemble after being fixed by the above method, and it is not convenient to repair the camera lens.

In view of this, it is necessary to provide a snap-fit structure for a lens decorative ring that can improve the eccentricity error of the lens decorative ring.

A snap structure includes a body and a snap ring. The snap ring includes a snap ring surface and at least two buckles disposed on the snap ring surface. The body includes a lens through hole and at least two engaging notches, at least one elastic protrusion and at least one limit stop disposed on the edge of the lens through hole and corresponding to the buckle. The elastic protrusion has a connecting end and a movable end connected to the connecting end. The connecting end is flexibly connected to the adjacent side of the engaging notch, and the movable end is elastically protruded from a plane where the body is located. The limit stop is disposed at an edge of the lens through hole opposite to the movable end of the elastic protrusion. The buckle passes through the corresponding engaging notch and passes through the lens barrel and the elastic protrusion in the through hole of the lens The active end and the limit stop are accurately positioned.

Compared with the prior art, the card structure provided by the present invention has a snap fit on the snap ring and a snap gap corresponding to the buckle on the body, so that the snap ring fits closely with the body and passes through the lens.

The lens barrel, the movable end of the elastic protrusion and the limit stop are accurately positioned in the through hole, thereby effectively avoiding the eccentricity error between the snap ring and the lens barrel. Secondly, because the snap fit and the snap-fit notch are used, the snap ring and the body are also easily disassembled for maintenance.

1‧‧‧Clock structure

10‧‧‧ Ontology

12‧‧‧ card ring

100‧‧‧ lens through hole

Edge of 1001‧‧

102‧‧‧ Snap gap

104‧‧‧Elastic protrusion

106‧‧‧Limit stop

1040‧‧‧Connected end

1041‧‧‧Active

1020‧‧‧Snap gap side

101‧‧‧ body plane

120‧‧‧ Engagement torus

122‧‧‧ buckle

1200‧‧‧ Engaged torus inner wall

1201‧‧‧The flange

1203‧‧‧Circle

1220‧‧‧ Holding Department

1221‧‧‧Clock Department

1222‧‧‧top of the holding unit

1223‧‧‧ engaging end face

13‧‧‧Lens cylinder

130‧‧‧Lens cylinder outer wall

FIG. 1 is an exploded perspective view of a snap-fit structure provided by an embodiment of the present invention.

FIG. 2 is a schematic view showing the cooperation of the engaging structure provided in FIG. 1.

FIG. 3 is a schematic view showing the positioning of the engaging structure provided in FIG. 1.

Figure 4 is a cross-sectional view taken along line IV-IV of Figure 3;

The invention will be further described in detail below with reference to the accompanying drawings.

As shown in FIG. 1, the present invention provides a snap structure 1 comprising a body 10 and a snap ring 12 that cooperate with each other. The body 10 includes a lens through hole 100 having an edge 1001 that is engaged with the edge 1001 of the lens through hole 100.

At least two symmetrically distributed engagement notches 102 are formed on the edge 1001 of the lens through hole 100. An elastic protrusion 104 and a limit stop 106 are formed on one side of at least one of the engaging notches 102.

The elastic protrusion 104 includes a connecting end 1040 and a movable end 1041 connected to the connecting end 1040. The connecting end 1040 of the elastic protrusion 104 is flexibly connected to the side 1020 of the adjacent engaging notch 102. The movable end 1041 of the elastic protrusion 104 elastically protrudes from the plane 101 where the body 10 is located .

The limit stop 106 is formed by the edge 1001 of the opposite side of the movable end 1041 of the elastic protrusion 104 protruding toward the center of the lens through hole 100. The elastic protrusions 104 and the limiting stops 106 are used to position the snap ring 12 on the edge 1001 of the lens through hole 100.

The snap ring 12 includes an engaging ring surface 120 and at least two latches 122 disposed on the engaging ring surface 120 in one-to-one correspondence with the engaging recesses 102. The outer diameter of the engaging annular surface 120 is larger than the diameter of the lens through hole 100. The inner diameter of the engaging annular surface 120 is smaller than the diameter of the lens through hole 100. The engaging ring surface 120 extends radially from the inner wall 1200 thereof with a flange 1201. The inner side of the flange 1201 defines a ring wall 1203 along the axial direction of the snap ring 12. The buckle 122 is evenly spaced at the edge where the flange 1201 engages with the engagement ring surface 120.

The buckle 122 includes a holding portion 1220 and an engaging portion 1221. The retaining portion 1220 is formed by the flange 1201 extending upward in the axial direction of the snap ring 12 . The engaging portion 1221 is formed by the top end 1222 of the holding portion 1220 extending horizontally outward in the radial direction of the snap ring 12 . The end of the engaging portion 1221 forms a U-shaped end surface 1223 to increase the flexibility of the buckle.

As shown in FIG. 2, FIG. 3 and FIG. 4, in order to make the snap ring 12 concentric with the lens barrel 13 mounted in the lens through hole 100, when the body 10 is engaged with the snap ring 12, the buckle 122 is made The retaining portion 1220 cooperates with the outer wall 130 of the lens barrel 13 and simultaneously passes the buckle 122 through the corresponding engaging notch 102 such that the engaging annular surface 120 and the edge 1001 of the lens through hole 100 cooperate with each other. A gap width F is left between the retaining portion 1220 of the buckle 122 and the edge 1001 of the lens through hole 100 to adjust the position between the snap ring 12 and the body 10.

After the buckle 122 passes through the engaging notch 102, the snap ring 12 is disposed on the side of the engaging notch 102 with the elastic protrusion 104 and the limit stop 106 rotated. The engaging portion 1221 of the buckle 122 is rotated by the connecting end 1040 of the elastic protrusion 104 toward the movable end 1041 to press the movable end of the elastic protrusion 104. The 1041 is kept flat with the edge 1001 of the lens through hole 100 such that the buckle 12 is rotatable into the edge 1001 of the lens through hole 100 between the limit stop 106 and the elastic protrusion 104. When the engaging portion 1221 of the buckle 12 leaves the elastic protrusion 104, the movable end 1041 of the elastic protrusion 104 is lifted upward by the elastic restoring force to protrude from the plane 101 where the body 10 is located. At this time, the buckle 122 is positioned within a segment edge 1001 between the limit stop 106 and the elastic protrusion 104. The engaging portion 1221 of the buckle 122 and the body 10 have a certain amount of engagement H.

In this embodiment, the distance S between the limit stop 106 and the movable end 1041 of the elastic protrusion 104 is equal to the width s of the buckle 122 (as shown in FIG. 1 ), and the engaging portion 1221 of the buckle 122 The radial length h is equal to the sum of the fastening amount H and the gap width F. The length L of the limiting block 106 protruding from the edge 1001 of the lens through hole 100 is greater than the thickness of the holding portion 1220 of the buckle 122. The sum of the gap widths F is such that the limit stop 106 and the resilient projections 104 better position the buckle 12.

The engaging structure 1 provided by the present invention is provided with a buckle 122 on the snap ring 12 and an engaging notch 102 corresponding to the buckle 122 on the body 10 so that the snap ring 12 fits tightly with the body 10 and is universally mounted. The lens barrel 13 in the lens through hole 100 and the limit stop 106 and the elastic protrusion 104 disposed on the edge 1001 of the lens through hole 100 accurately position the snap ring 12, effectively avoiding the gap between the snap ring 12 and the lens barrel 13. Eccentricity error. Secondly, since the snap ring 122 is engaged with the engaging notch 102, the snap ring 12 is easily detached from the body 10 for maintenance.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

10‧‧‧ Ontology

12‧‧‧ card ring

100‧‧‧ lens through hole

102‧‧‧ Snap gap

104‧‧‧Elastic protrusion

1040‧‧‧Connected end

1041‧‧‧Active

106‧‧‧Limit stop

122‧‧‧ buckle

Claims (12)

A snap-fit structure includes a body and a snap ring, the snap ring includes a snap ring surface and at least two buckles disposed on the snap ring surface, the body includes a lens for penetrating the lens barrel The through hole and the at least two engaging notches formed on the edge of the lens through hole and corresponding to the buckle are improved in that the body further comprises at least one elastic protrusion disposed on the edge of the lens through hole and at least one limit stop The elastic protrusion has a connecting end and a movable end connected to the connecting end, and the connecting end is flexibly connected to a side adjacent to the engaging notch, and the movable end is elastically protruded from a plane of the body, the limit The stopper is disposed at an edge of the lens through hole opposite to the movable end of the elastic protrusion, and the buckle extends through the corresponding engaging notch into the lens through hole and is caught on the edge of the lens through hole, wherein a buckle is positioned at the elastic Between the movable end of the protrusion and the limit stop. The accommodating structure of claim 1, wherein the outer diameter of the engaging annular surface is larger than the diameter of the lens through hole, and the inner diameter of the engaging annular surface is smaller than the diameter of the lens through hole. The engaging structure of claim 2, wherein the engaging annulus extends a flange in a radial direction of the inner wall thereof, and the inner side of the flange forms a ring wall along the axial direction of the snap ring. The engaging structure of claim 3, wherein the snap spacing is evenly disposed on the flange. The snap structure of claim 3, wherein the snap is disposed at a side of the flange that engages the snap ring surface. The snap-fit structure of claim 3, wherein the buckle comprises a retaining portion and an engaging portion, the retaining portion is formed by the flange extending upward in the axial direction of the snap ring, the card The joint portion is formed by the top end of the retaining portion extending along the radial direction of the snap ring. The engaging structure according to claim 6, wherein the end of the engaging portion forms a U-shaped end surface. The engaging structure of claim 6, wherein when the snap ring is engaged with the body, the engaging portion of the buckle has a gap width with an edge of the lens through hole. The engaging structure of claim 8, wherein the engaging portion of the buckle has a length of engagement with the body, and the radial length of the engaging portion is equal to the engaging amount and the gap. The sum of the widths. The engaging structure of claim 8, wherein the length of the limiting stop protruding from the edge of the lens through hole is greater than the sum of the thickness of the locking portion and the width of the gap. The snap structure of claim 1, wherein the distance between the limit stop and the movable end of the elastic protrusion is equal to the width of the buckle. The engaging structure of claim 1, wherein the elastic protrusion and the limiting stopper are disposed on the same side of each of the engaging notches, and at least one side of one of the engaging notches should be disposed.