TWM535815U - Buckle replaceable type snow goggle - Google Patents

Description

Card-removable snow mirror

This kind of card-removable snow mirror is a novel snow mirror structure technology that can easily unbuck and replace lenses and headbands.

Unlike sunglasses, large white snow reflects light more strongly than snowless ground, and it is more glaring under the sun. Therefore, watching snow directly on sunny snow will not cause long-term snow blindness and make snow walking. People who are skiing or skiing must wear a snow mirror that fits the eye to protect the eyes from glare, and the snow and ice are glaring, and the snow skiing speed is fast, making it easier to wear a snow mirror. Generally, the glasses are more stable and stronger. Therefore, the requirements for the structure of the snow mirror are far more stressful than the sunglasses, and it is worthwhile to carefully design the structure to meet the safety standards for wearing harsh environments.

The snow mirror is applied around the user's face, reflecting the excessive light with an incompletely transparent mirror surface, and preventing the wind and snow from blowing the eyes, allowing the user to see the surrounding snow environment for a long time, and seeing the snow mirror as a single frame. Corresponding to the inner edge of the frame around the entire edge of the lens, a full-circle groove is formed, so that the edge of the lens can be embedded in the groove, and the ligament is pierced on both sides of the frame to wear the headband, but the frame is mostly soft. Made of colloid, the lens is clamped and fixed in the frame only by the groove. Although the structure is extremely simple and easy to manufacture, if the lens is excessively worn or the buyer is not satisfied with the color of the lens, the lens replacement service of the merchant is required to be bought or sold. Let consumers change lenses themselves Industry, it will be very difficult to pull the inner wall of the frame, the edge of the lens is pulled out of the groove to be replaced, and the structure of the banded headband is worn on both sides of the frame, just like the strap structure of the shoulder strap. It is necessary to tie the headband with a looping strap around the frame, and if the headband itself is too loose, or the buyer is not satisfied with the headband pattern. It is not easy to replace the headband when it is necessary to change the service of the headband of the merchant who buys and sells the terminal or to allow the consumer to replace the headband.

In view of the fact that the snow mirror structure is not easy to replace the lens and the lack of the headband, the creator is actively studying the improvement. After some hard work and trials, the author finally has this creation.

The creation of such a card-removable snow mirror is intended to improve the lack of easy replacement of the lens and the headband of the snow mirror structure. The lens is mainly composed of a lens, a frame, a frame, and a buckle. The pressure plate structure and a bundle of headbands are folded together, wherein the lens is a binocular connected piece body, and a fastening groove ear is arranged near the center of the two side edges, and the side edge of the frame is corresponding to the buckle groove ear. The shackle of the slats and the side edges of the lens are arranged across the ferrule, and the ribs are formed on the vertical surface of the rim, and a plurality of open-type fastening holes and a plurality of closed types are formed in the ribs. The fastening holes are arranged according to the ribs in series to be arranged between the respective fastening holes to be more solid and convenient to facilitate the assembly, and to open the headband clip end grooves on both sides, and the open type fastening holes are distributed. The frame surface may correspond to the nose top and the forehead portion, and a narrow opening space is formed in the frame inner edge of the frame surface, and the closed type fastening holes are holes that are not transparent to the frame edge. The side of the eye frame and the frame surface correspond to the nose wing, and the frame is overlapped with the number of open-type fastening holes, and the number is closed. Engaging opposite side edges of each hole and defines a recess at the end of the headband clip, projections can be snapped into the corresponding engaging hole type openings, the number of T-shaped engagement hole number of closed clasp The double hook and the single hook are used to overlap and form the frame with the frame of the eye frame, and the frame overlaps the groove of the end of each head band, and protrudes from the side wall of the end of the clamp head. The user can simply open the corresponding type of hooking hole on the side of the frame of the eye frame by jumping the eye frame to open the corresponding hook of the hook, and can easily open the groove of the band end of the band head to carry out the beam. The headband is replaced, thereby achieving a more stable fastening assembly than the snow frame, and the headband can be easily replaced, which is the main purpose of the creation.

Moreover, the buckled lock plate structure of the present invention is a fixed pressure plate and a screwable pressure plate, which are respectively located on both sides of the frame, and the one end of the lens is clamped by the fixed platen. The other side of the lens is clamped by the squeezable pressing plate. At the fixed pressing plate and the squeezing plate pressing pin, the vertical pin is inserted into the anchoring pin hole, and the other side of the frame is correspondingly laminated. The top of the buckle plate is only perpendicular to the bayonet pin, and the pin hole for inserting the vertical pin is inserted as a pin, and the corresponding groove of the pinch plate and the side angle of the lens are attached. The upper and lower sides of the plate are offset from the upper end of the lens, and the vertical side of the lens protrudes from the side of the frame. The side edge of the frame is adjacent to the fixed platen and only the vertical pin is provided. Under the plate, only the vertical pin-shaped pin is opened from the outside to the outside of the clip, and the lip-clip hole is opened outwardly. The fixed platen surface is corresponding to the ear groove hole of the clamping and fixing groove ear, and the protruding can be used for the fastening groove. The ear is obliquely pushed into the ear, so that the ear slot is inserted into the oblique hook block, and the corresponding frame is slidably fitted with the screwable pressing plate. At the ear slot of the slotted ear, a positioning protrusion which can be inserted and latched by the correspondingly connected ear slot is protruded, thereby inserting the buckle lock plate structure into the corresponding position of the frame, and then rotating By screwing the pressing plate, the locking groove of the lens facing the fixed platen can be squeezed into the back of the fixed platen by the front side of the frame, and then the lens is positioned toward the ear slot of the side of the screwable platen. After the bump card is fixed, the screw can be screwed down to rotate the press plate so that only the vertical pin-shaped pin under the screw-fastening plate can be clamped into the outer opening and the lip hole is clamped to form a lens and the frame is fixed, and the screw can be rotated. The buckle plate bounces off and the outer opening is transparent through the lip clamp hole, which can be The lens is removed obliquely in front of the frame to achieve a stable connection between the lens and the frame, and the effect of the lens is easily removed. This is another purpose of the creation.

Furthermore, the snow-removable snow mirror of the present invention is specially formed by the opening-type fastening hole to form a narrow opening into the space inside the through-frame, so that the corresponding frame-shaped opening-type fastening hole protrudes to form a T The double hook of the word can be quickly inserted into the opening type fastening hole through the narrow neck, so that the fastening is more convenient and quick, which is another purpose of the creation.

As for the detailed structure, application principle, function and effect of this creation, a complete understanding can be obtained by referring to the following description according to the drawings.

10‧‧‧ Eye frame

10A, 10B‧‧‧ headband with clip end groove

10C‧‧‧Box space

10D‧‧‧ Ribs

11,12,13‧‧‧Open type snap hole

11A‧‧‧ narrow mouth

14,15,16,17,18,19‧‧‧Closed snap hole

20‧‧‧Contact frame

20A, 20B, 20C‧‧‧ button holes

20D‧‧‧Opening through the lip hole

20E‧‧‧Positioning lugs

20F, 20G‧‧‧ side wall

20H‧‧‧ fingertips placed shallow notch

21,22,23,28,29‧‧‧T double hook

21A‧‧‧neck

21B‧‧‧Double hook block

24,25,26,27‧‧‧ single hook

24A‧‧‧neck

24B‧‧‧ single hook block

30‧‧‧ lenses

31,32‧‧‧ buckled ear

31A, 32A‧‧‧ ear slot

33, 34, 35, 36‧‧‧ lens side angle

40‧‧‧Lock lock plate structure

41‧‧‧Fixed platen

41A, 41B, 42A, 42B‧‧‧ blocks

42‧‧‧Spin-on platen

42C‧‧‧

43,44,45,46‧‧‧ vertical pin

47‧‧‧ oblique hook block

50‧‧‧Bundle headband

51, 52‧‧‧ headband end

53‧‧‧ Shaped rod

The first picture is the overall perspective view of the snow-shield of the creative card.

The second figure is a three-dimensional exploded view of the snow-shield of the deduction card.

The third picture is the three-dimensional exploded view of the snow-shield of the creative buckle card.

The fourth figure is an enlarged view of the A part indicated in Figure 2.

The fifth figure is an enlarged view of the B part indicated in Figure 2.

The sixth figure is an enlarged view of the C portion indicated in Figure 2.

The seventh figure is an enlarged view of the D portion indicated in Figure 2.

The eighth figure is a partial cross-sectional view of the D-D line in Figure 1.

The ninth figure is a partial cross-sectional view of the E-E line in Figure 1.

The tenth figure is a schematic diagram of the lens removal of the snow-shield of the creative buckle card.

The eleventh figure is an overall perspective view of another implementation structure of the creative card-removable snow mirror.

The lack of the structure of the snow mirror has been described above, and will not be repeated here. The first picture is the overall perspective view of the snow-shielded snow-shield, and the second picture is the exploded view of the snow-shield. The third figure is the three-dimensional exploded view of the snow-shield of the creative card. The figure shows that the snow-removable snow mirror of this kind of card is mainly composed of a lens 30, a frame 20, and a circle. The eye frame 10, a set of buckle lock plate structure 40 and a bundle of headbands 50 are folded together, wherein the lens 30 is a binocular connected piece body, and the fastening groove ears 31, 32 are respectively arranged at the center of the two side edges. The latching slots 31, 32 are further provided with ear slot holes 31A, 32A. The side edges of the frame 20 are corresponding to the latching ears 31, 32, and the crimping ears 31, 32 and the lens side end are arranged across the crimping clip. The buckled platen structure 40 of the corners 33, 34, 35, 36.

The sleeve locking plate structure 40 is a fixed pressing plate 41 and a rotatable pressing plate 42 respectively located at two sides of the frame 20, and one end of the lens 30 is pinched by the fixed pressing plate 41, and the other end of the lens 30 is rotated. The pressing plate 42 is clamped, and the locking plate ears 31, 32 and the lens side end angles 33, 34, 35, 36 of the lens clamping plate 30 are clamped on the fixing platen 41 and the screwable pressing plate 42, and the upper and lower corresponding offset slots are fixed. The ears 31, 32 are not at the side angles 33, 34, 35, 36 of the lens, and the vertical latches 43, 44, 45, 46 are respectively protruded, and the vertical edges of the frame 20 are correspondingly stacked on the side of the fixed platen 41. At the bayons 43, 44, the vertical latches 43, 44 are inserted into the anchoring pin holes 20A, 20B, and the other side edges of the frame 20 are correspondingly stacked. At the same time, a vertical locking pin 45 is inserted into the insertion hole 20C as a rotating shaft, and the corresponding folding screwing plate 42 is only perpendicular to the locking pin 46, and is opened under the rotatable pressing plate 42. Only the vertical latching pin 46 is opened from the outside to the outside of the clip-fastening opening, and the lip-clamping hole 20D is opened outward. The surface of the fixed pressing plate 41 corresponds to the ear slot 31A of the clamping and locking slot 31, and the protruding buckle can be buckled. Slotted ear 31 obliquely penetrates into, The slot 31A is inserted into the latching block 47, and the corresponding frame 20 is correspondingly attached to the ear slot 32A of the latching slot 32, and the protruding slot can be positioned for the correspondingly folded ear slot 32A. The protrusion 20E can be disposed on the outer side corner of the screwable pressing plate 42 corresponding to the frame 20, and can form a fingertip to place the shallow notch. 20H, in order to facilitate the extension of the outer edge of the revolverable pressing plate 42 to pinch the edge of the retractable pressing plate 42.

The rib portion 10D is formed on the vertical surface of the inner ring of the eye frame 10 to be overlapped with the frame 20, and a plurality of open-type fastening holes 11 for facilitating rapid positioning are opened in the supporting rib portion 10D. , 12, 13, and a plurality of strong locking type closed fastening holes 14, 15, 16, 17, 18, 19 for overlapping and locating the frame of the frame 20, and on both sides Each of the bundle heads has a clip end groove 10A, 10B, and the joint frame 20 is overlapped with a plurality of open type snap holes 11, 12, 13, and a plurality of closed type fastening holes 14, 15, 16, 17, 18, 19 Wherein, the protrusion can be buckled into the corresponding open type fastening holes 11, 12, 13, and the number of closed type fastening holes 14, 15, 16, 17, 18, 19, T-shaped double hooks 21, 22, 23, 28 , 29 and single hooks 24, 25, 26, 27, each of the open type fastening holes 11, 12, 13 are respectively buckled with a T-shaped double hook 21, 22, 23, except for the rib portion 10D adjacent to the circumference Each of the closed fastening holes 14, 15, 16, 17 of the eye frame 10 is respectively opposite to a single hook 24, 25, 26, 27, and the other closed fastening holes 18, 19 respectively A T-shaped double hook 28, 29 is opposite to the buckle, and the frame 20 is overlapped and touches the end groove 10A, 10B of each bundle head, and the protruding clamp head end 51, 5 2 side wall 20F, 20G, beam head end groove 10A, 10B and beam head end 51, 52 detailed composition and cooperation, please refer to the enlarged view of the fourth figure, because the parts are the same structure Taking a headband end 52 as an example, the headband 50 can be worn across the end band 10B of the headband, and the headband end 52 of the headband 50 becomes thicker than the end of the clip. The groove 10B is grooved at the end of the strip t2, so that the headband 50 is worn across the end band 10B of the headband, and the end of the headband 52 is retained by the end band 10B of the headband. On the inner side of the eye frame 10, after the eye frame 10 is overlapped with the frame 20, the frame 20 is correspondingly covered by the cover band band end groove 10B, and the side wall 20G is crimped to cover the head band end groove 10B concave. The mouthband 50 is engaged with the eye frame 10 and the frame 20, and the ferrule 53 is wound into the end of the band formed by the end of the headband 52, so that the winding is more complete. Because the eye frame 10 has a certain degree of soft deflection, even if the eye frame 10 is overlapped with the frame 20, the eye frame 10 is simply twisted. Let the number of closed-type fastening holes 14, 15, 16, 17 jump open the hooks of 24, 25, 26, 27, and then easily open the notch of the end band 10A, 10B, and pull out The headband 50 is replaced; here, the headband end 51 can also be changed to a multi-fold sewing method (this multi-folding drawing is not drawn), so that the multi-folded portion becomes the thickness t1 larger than the clip end groove 10B. The end winding of the groove thickness t2 causes the headband 50 to be worn across the end band gap end 10B, and the headband end 52 is retained by the headband clip end groove 10B in the eye frame 10. The inner band of the headband is movable freely removable, and is not fixedly sewn to the lens frame 20 or the eye frame 10.

Please refer to the enlarged view of the parts of the fifth, sixth and seventh figures. The open-type fastening holes 11, 12, 13 are distributed on the vertical surface of the inner ring of the eye frame 10 and the rib part 10D. Since the open-type fastening holes 11, 12, and 13 have the same structure, only an open-type fastening hole 11 is shown in the fifth figure. The open-type fastening hole 11 is especially directed to the inner edge of the frame. The inner space 10C is formed with a slit 11A, and the notch formed by the slit 11A is formed on the transverse section of the rib portion 10D, and has a considerable degree of anti-crowding property, and the T-shaped double hook 21, 22 can be easily replaced. The hook neck 21A of 23 has a quick positioning benefit by laterally nesting, and the closed type fastening holes 14, 15, 16, 17, 18, 19 have the same structure, and only one closed type is shown in the sixth figure. The fastening hole 14 is a rib portion 10D which is divided into the rim portion 10D of the eye frame 10, and is a hole penetrating through the edge of the frame, and is located at the side oblique angle and the frame surface. The nose portion is overlapped with the plurality of open-type fastening holes 11, 12, 13, and the plurality of closed fastening holes 14, 15, 16, 17, 18, 19, and the protrusion can be buckled into the corresponding opening type. Buckle holes 11, 12, 1 3, several closed type fastening holes 14, 15, 16, 17, 18, 19 of several T-shaped double hooks 21, 22, 23, 28, 29 and single hooks 24, 25, 26, 27, and In the foregoing, the headband end 52 passes through the headband clip end groove 10B, and the receiving frame 20 is pressed against the side wall 20G of the cover headband clip end groove 10B, so that the headband 50 and the eye frame 10 are clamped. The phase card is connected, so when the frame 20 is unfastened and the eye frame 10 is fastened, the head end can be easily brought 52 is detached from the end band gap end groove 10B to replace the head band 50, so that the effect of disassembling the head band 50 can be easily obtained.

As for the number of T-shaped double hooks 21, 22, 23, 28, 29, the detailed hook structure is as shown in the enlarged view of the seventh figure, which is represented by a T-shaped double hook 21, which has a common frame surface. The double hooking block 21B is bent out of the hook neck 21A.

After this combination, after the completion of the internal setting state, as shown in the eighth and ninth partial cross-sectional views, and with reference to the enlarged drawings of the fourth to seventh figures, the assembly allows the single hook 24 directly With the hook-shaped slanting edge of the single hooking block 24B being squeezed through the closed-type fastening hole 14 of the supporting rib portion 10D, the neck portion 24A is clipped and fixed by the closed-type fastening hole 14 and In the eight-figure assembly, the T-shaped double hook 21 can be quickly inserted into the open-type fastening hole 11 by the narrow-neck 11A of the open-type fastening hole 11 of the supporting rib portion 10D with its narrowed neck 21A. The double hooking block 21B is opposite to the outer hole edge of the opening type fastening hole 11 of the card, and the direction of the outer edge of the opening type 11A of the hook neck 21A is different from that of the double hooking piece 21B. The double hook block 21B is suddenly shaken by the external force, and the missing lock is released from the slit 11A, so that the buckle joint is more convenient and quick, and the two ends of the lens 30 are respectively pressed by the fixed pressure plate 41 and the screwable pressure plate 42. It is fixed on the lens frame 20, and is inserted into the ear slot 31A of the corresponding side by the oblique hook block 47, and the positioning bump 20E is engaged in the ear groove of the corresponding side. 32A engaging the buckle card position accurately.

As shown in FIG. 10, after the buckle lock plate structure 40 is inserted into the corresponding position of the lens frame 20, the spinner platen 42 can be rotated to face the lens 30 toward the fixed platen 41 side. The locking groove 31 is fixed from the center of the frame 20 to the side of the frame 20 and is fixed to the back of the fixed platen 41. Then, the lens 30 is fixed to the ear slot 32A of the side of the screwable plate 42 by the positioning protrusion 20E. The rotary plate lowers the retractable pressing plate 42 so that only the vertical locking pin 46 under the rotatable pressing plate 42 is snapped into the outer opening transparent lip bomb The clamping hole 20D is clamped, and the lens 30 is formed and fixed in combination with the frame 20; on the contrary, the screwing plate 42 can be bounced and pulled out to open the lip hole 20D, so that the lens 30 can be removed obliquely from the front of the frame 20. The lens 30 and the lens frame 20 are firmly connected, and the effect of the lens 30 is easily removed.

The buckled snow mirror of the present invention can also be implemented as shown in FIG. 11 , and the fixed platen 41 and the screwable platen 42 protrude from the other end faces of the vertical pins 43 , 44 , 45 , 46 . (The vertical bayonet 43, 44, 45, 46 is not shown in the figure, please refer to the previous figure), and the blocks 41A, 41B, 42A, 42B are formed so as to increase the finger pinch to press the fixed platen 41 or press The frictional force of the squeezing platen 42 can more stably operate the fixed platen 41 or the squeezable platen 42, and the fixed platen 41 and the squeezable platen 42 protrude from the reverse of the vertical pins 43 , 44 , 45 , 46 . The upper surface of the frame 20 is attached to the outer corner of the frame 20, and the height of the frame is raised by a wall 42C, so that the finger is pinched and twisted by the wall 42C to rotate the platen 42 to make it easier to rotate and rotate the plate 42 to the lens. 30 buckle lock compression (in the figure, only the surface of the retractable pressure plate 42 is shown to be the panel 42C).

In summary, this creation does achieve the stated effect, and it has not been used publicly. In accordance with the provisions of the Patent Law, it is a matter of granting a patent.

It should be noted that the above is a better embodiment of this creation. If the changes made according to the concept of this creation, or the functional functions produced by them, still do not exceed the spirit of the manual and the illustration, All should be included in the scope of this creation, combined with Chen Ming.

10‧‧‧ Eye frame

10A, 10B‧‧‧ headband with clip end groove

10C‧‧‧Box space

10D‧‧‧ Ribs

11,12,13‧‧‧Open type snap hole

11A‧‧‧ narrow mouth

14,15,16,17,18,19‧‧‧Closed snap hole

20‧‧‧Contact frame

20A, 20B, 20C‧‧‧ button holes

20D‧‧‧Opening through the lip hole

20F, 20G‧‧‧ side wall

21,22,23,28,29‧‧‧T double hook

24,25,26,27‧‧‧ single hook

30‧‧‧ lenses

31,32‧‧‧ buckled ear

31A, 32A‧‧‧ ear slot

33, 34, 35, 36‧‧‧ lens side angle

41‧‧‧Fixed platen

42‧‧‧Spin-on platen

46‧‧‧Vertical pin

50‧‧‧Bundle headband

51, 52‧‧‧ headband end

53‧‧‧ Shaped rod

Claims (9)

The utility model relates to a snow-removable snow mirror, which is characterized by the following structure: a lens, which is a binocular connected piece body, and a side edge angle of the lens is arranged adjacent to both side edges to quickly assist the assembly positioning, and The central position of the two end corners is further provided with a locking groove ear having an ear slot; a surrounding eye frame, the vertical surface of the surrounding eye frame is formed with a supporting rib portion, and the rib portion is opened at the rib portion There are several open-type fastening holes for quick positioning, a plurality of strong locking type closed-type fastening holes, and a groove for the end of the bundle head is provided on both sides; one frame is connected and fixed. The lens is disposed at a side edge of the lens frame corresponding to the grooved ear joint, and a plurality of T-shaped double hooks and a plurality of single hooks are opened on the contact surface of the corresponding frame of the frame. Each of the open-type fastening holes is respectively opposite to a T-shaped double hook, and each of the closed-type fastening holes opened in the corners of the ribs adjacent to the eye frame is respectively opposite to a single hook, and the rest The closed type fastening holes are respectively opposite to the T-shaped double hooks, so that the frame can be framed with the frame of the eye frame The combination of the locking and clamping plate structure is a fixed pressing plate and a revolving pressing plate, which are respectively located at two sides of the connecting frame for fastening the lens to the connecting frame, and rotating the same The rotary press plate can easily make the lens obliquely excavated from the screw-down plate of the spin-off plate by the frame, and a headband which has a thickness greater than the end of the band. The end groove of the end groove is grooved, so that the end of the bundle head passes through the groove of the end of the bundle head, and at the same time, the side wall of the corresponding end of the cover of the cover frame of the cover is clamped, so that the headband is brought The card is connected with the eye frame, and the fastening of the lens frame and the eye frame can be easily removed from the end of the band end band, and the head band is replaced. The snow-removing snow mirror of the buckle according to the first aspect of the patent application, wherein the fixed pressure plate surface corresponds to the ear groove hole of the clamping and fixing groove ear, and the protrusion can be bent and inserted into the buckle groove ear, so that The ear slot is inserted into the slanted hook block. The buckle snow-removable snow mirror according to the first aspect of the patent application, wherein the connecting frame is provided with a screw-fastening plate, corresponding to the ear slot of the fastening groove ear, and the protruding can be used for the corresponding overlapping The ear slot is inserted into the positioning of the positioning bump. The buckle snow-removable snow mirror according to claim 3, wherein the end of the bundle head formed by the end of the coil is placed in the shaping rod. The snow-removable snow mirror of claim 3, wherein the ends of the headband are multi-folded to form a final loop. The buckle snow-removable snow mirror according to the first aspect of the patent application, wherein the fixed platen and the buckled plate of the spin-press plate presser lens and the side surface of the lens side end face are offset by a fixed slot At the side corners of the lens, the vertical bayonet pins are respectively protruded, and the vertical pin-shaped pins of the fixed pressure plate are respectively arranged on the side edges of the frame, and the insertion holes for inserting the anchors into the anchors are provided. The other side of the frame is corresponding to the stacking pin. The top of the pinch platen is only perpendicular to the pin, and the pin hole is inserted as a pin hole for the rotating shaft, and the corresponding stack can be screwed under the platen. At the vertical pin-spinning hole, a hole for the lip-clip can be opened outwardly from the outer side of the pinch-pressing plate. The buckle snow-removable snow mirror according to claim 6, wherein the fixed pressure plate and the screw-fastening plate protrude from the reverse plate surface of the vertical bayonet, and the blocks forming the shallow protrusion are distributed. . The buckle snow-removable snow mirror according to the second aspect of the patent application, wherein the fixed platen and the reverse plate of the spin-up plate protruding from the vertical pin are facing outwardly from the outer corner of the frame frame, and the high-convex convex Out of the wall. The buckle snow-removable snow mirror according to claim 8 , wherein the connecting frame corresponds to a side edge of the spin-off pressing plate, and a fingertip is placed to place the shallow recess.