TWM584012U - Key cap, key module having the key cap, and jig on which the key cap is arranged - Google Patents

Abstract

A button module includes a bottom plate, a supporting mechanism, and a key cap. The support mechanism is disposed on the bottom plate. The keycap is disposed on the support mechanism and can move up and down relative to the bottom plate. The keycap includes a keycap body, a plurality of connecting structures, and at least one holding structure. The keycap body has a top wall and a surrounding wall extending downwardly from the periphery of the top wall. The connecting structures are formed on a bottom surface of the top wall of the keycap body and are adapted to be disposed on the support mechanism. The at least one holding structure is formed on the bottom surface of the top wall of the keycap body at a distance from the connecting structure, and the at least one holding structure is adapted to be disposed on a jig to set the key cap to the jig.

Description

Key cap, button module having the key cap, and jig for the key cap

The present invention relates to a keycap, and more particularly to a keycap having a retaining structure suitable for use in a jig.

In general, the characters displayed on the keycaps of the previous button modules are mostly formed by printing. However, in recent years, the formation of the typefaces on the keycaps has gradually developed toward the process of painting and laser engraving. Spraying paint on the surface of the keycap to make the surface of the keycap opaque, and then removing a part of the paint on the surface of the keycap by laser engraving to form a typeface, so that the part formed by the keycap can emit light. To have a backlight effect. However, this type of painting laser engraving requires the use of a fixture to fix the keycap to paint and laser engrave the keycap. Therefore, the design of the button module and its keycap and fixture has become a new topic.

Accordingly, it is an object of the present invention to provide a keycap that addresses at least one of the problems of the prior art.

Thus, in some embodiments, the keycap of the present invention includes a keycap body, a plurality of connecting structures, and at least one retaining structure. The keycap body has a top wall and a surrounding wall extending downwardly from the periphery of the top wall. The connecting structures are formed on the bottom surface of the top wall of the keycap body and are adapted to be disposed in a support mechanism. The at least one holding structure is formed on the bottom surface of the top wall of the keycap body at a distance from the connecting structure, and the at least one holding structure is adapted to be disposed on a jig to set the key cap to the jig.

In some embodiments, the at least one retaining structure is adjacent the center of the top wall of the keycap body than the connecting structures.

In some embodiments, the connecting structures are distributed adjacent the perimeter of the top wall of the keycap body.

In some embodiments, it includes spaced apart and is suitable for two holding structures disposed in a jig.

In some embodiments, the retaining structures are spaced apart along a first direction of the keycap, and the retaining structures are adjacent to the keycap in a second direction perpendicular to the first direction than the connecting structures At the center of the top wall of the body.

Therefore, another object of the present invention is to provide a key module capable of solving at least one of the problems of the prior art.

Therefore, in some implementations, the new button module includes a bottom plate, a supporting mechanism, and a key cap. The support mechanism is disposed on the bottom plate. The keycap is disposed on the support mechanism and can move up and down relative to the bottom plate. The keycap includes a keycap body, a plurality of connecting structures, and at least one holding structure. The keycap body has a top wall and a surrounding wall extending downwardly from the periphery of the top wall. The connecting structures are formed on a bottom surface of the top wall of the keycap body and are disposed on the support mechanism. The at least one holding structure is formed on the bottom surface of the top wall of the keycap body at a distance from the connecting structure, and the at least one holding structure is adapted to be disposed on a jig to set the key cap to the jig.

In some embodiments, the at least one retaining structure is adjacent the center of the top wall of the keycap body than the connecting structures.

In some embodiments, the connecting structures are distributed adjacent the perimeter of the top wall of the keycap body.

In some embodiments, the keycap includes spaced apart and is adapted for use in two retaining structures disposed in a jig.

In some implementations, the holding structures are spaced apart along a first direction of the button module, and the holding structures are adjacent to the keys in a second direction perpendicular to the first direction. At the center of the top wall of the cap body.

In some embodiments, the support mechanism is formed with at least one escaping hole for the at least one retaining structure to extend.

In some implementations, the support mechanism includes a first support member and a second support member. The width of the first support member is greater than the width of the second support member, and the first support member is formed with a receiving portion. a slot, the second support member extends through the receiving slot to be alternately connected to the first support member between the bottom plate and the keycap.

In some embodiments, the keycap includes two retaining structures spaced apart and adapted to be disposed in a jig, the support mechanism being formed with two avoidance holes for the retaining structures to extend, the avoidance A hole is formed in the first support.

In some embodiments, the keycap includes two retaining structures spaced apart and adapted to be disposed in a jig, the support mechanism being formed with two avoidance holes for the retaining structures to extend, the avoidance A hole is formed in the second support.

Accordingly, another object of the present invention is to provide a jig that solves at least one of the problems of the prior art.

Therefore, in some embodiments, the present jig is suitable for the above-mentioned key cap arrangement, and the jig includes a jig body and a carrier block. The bearing block is formed on the fixture body and is provided for the key cap. The carrier block has a bearing surface for abutting against a bottom surface of the top wall of the keycap body, and is formed on the bearing surface for At least one mounting structure corresponding to the at least one holding structure, and a plurality of escaping grooves formed on the bearing surface spaced apart from the at least one mounting structure and accommodating the connecting structures.

In some implementations, the at least one mounting structure is adjacent the center of the carrier block than the avoidance slots.

In some implementations, the avoidance slots are located adjacent the perimeter of the carrier block.

In some embodiments, the carrier block has two mounting structures spaced apart.

In some embodiments, the mounting structures are spaced apart along a first direction of the fixture, and the mounting structures are adjacent to the carrier in a second direction perpendicular to the first direction. At the center of the block.

According to the at least one holding structure formed on the top wall of the keycap body, the key cap can be disposed on the jig to spray paint and laser engrave the key cap, and is And connecting the jig with the at least one holding structure without using the connecting structure to connect with the jig, so that the connecting structure can be prevented from being damaged due to assembly and disassembly with the jig, so as to The probability that the key cap of the button module is detached from the support mechanism due to the damage of the connection structure is reduced. And, the at least one holding structure is not integrally formed with the connecting structure, so that the at least one holding structure is deformed when being deformed by assembling and disassembling the jig, and the connecting structure is not affected; Therefore, when the mold for manufacturing the key cap is designed, the oblique pin for forming the holding structure of the mold and the oblique pin for forming the connecting structure can be separately disposed to prevent the oblique pin from being merged and the oblique pin is too large. The release of the key cap is not smooth, so as to avoid affecting the quality of the product. Further, by the at least one holding structure at the center of the top wall of the keycap body, the keycap can be more stable when the jig is disposed on the jig and is not easy to be painted. The air gun is blown up to prevent the inner side of the keycap from being painted, which affects the transparency of the laser engraved pattern of the keycap after laser painting.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 1 to FIG. 3, a first embodiment of the present button module 10 includes a bottom plate 1, a film circuit board 2, a supporting mechanism 3, and a keycap 4. For example, the first embodiment can be applied to a keyboard (not shown) having a plurality of button modules 10.

In the first embodiment, only one square plate is taken as an example, and the material of the bottom plate 1 may be plastic, but not limited thereto. The bottom plate 1 has one along the button module 10 . a plate body 11 extending in the longitudinal direction D1 and a width direction D2 perpendicular to the length direction D1, two first hooks 12 extending upward from the plate body 11 and spaced along the width direction D2, Two second hooks 13 extending upwardly from the board body 11 and spaced apart along the width direction D2, and extending upward from the board body 11 and spaced along the width direction D2 and adjacent to the first hooks 12 The two hooks 14 and the second hooks 13 are spaced apart from each other along the length direction D1, and the first hooks 12 and the second hooks 13 The ends are extended in opposite directions to each other. The thin film circuit board 2 is disposed over the bottom plate 1 in a covering manner.

The support mechanism 3 is disposed on the bottom plate 1. The support mechanism 3 includes a first support member 31 and a second support member 32. The material of the first support member 31 and the second support member 32 may be, for example, Plastic, but not limited to this. The width of the first support member 31 in the width direction D2 is larger than the width of the second support member 32 in the width direction D2, and the first support member 31 is formed with a receiving groove 311, the second support member 32 extends through the receiving groove 311 to be alternately connected to the first support member 31 between the bottom plate 1 and the key cap 4 . In more detail, the first support member 31 has two columnar portions 312 which are located on one side and are columnar extending in the width direction D2 and are respectively pivotally disposed on the first hooks 12 respectively. Two second pivoting portions 313 on the other side and extending in the width direction D2, and two pivoting slots formed in the middle of the receiving groove 311 and formed along the width direction D2 314, and the first support member 31 abuts against the stoppers 14 of the bottom plate 1. The second support member 32 has two columnar portions 321 located on one side and extending in the width direction D2 and pivotally respectively disposed on the second hooks 13 on the other side. And two columnar second pivoting portions 322 extending in the width direction D2 and two pivoting posts 323 respectively rotatably extending through the pivoting slots 314. The second support member 32 and the first support member 31 together form a scissor-like X-shaped support structure by the pivotal joints 314 and the pivotal posts 323.

With reference to FIG. 4 and FIG. 5 , the key cap 4 is disposed on the support mechanism 3 and can move up and down relative to the bottom plate 1 . The key cap 4 includes a key cap body 41 , four connecting structures 42 , 42 ′, and The material of the key cap 4 can be plastic, for example, but not limited thereto. It should be noted that the number of the connecting structures 42, 42' may also be two, three or more, and the number of the holding structures 43 may be one, or even more than three, two The number of the persons is not limited by the first embodiment. The keycap body 41 has a top wall 411 and a surrounding wall 412 extending downward from the periphery of the top wall 411. The connecting structures 42, 42' are formed to extend downward from the bottom surface of the top wall 411 of the keycap body 41 and are disposed in the supporting mechanism 3. In the first embodiment, the four connecting structures 42, 42' The two connecting structures 42 are respectively formed with a card slot 421 for receiving the fourth pivoting portion 322 of the second supporting member 32, and the connecting structures 42 are opposite to the fourth pivot of the second supporting member 32. The connecting portion 322 is pivoted, wherein the other two connecting structures 42 ′ are respectively formed with a sliding slot 421 ′ for receiving the second pivoting portion 313 of the first supporting member 31 , and the connecting structures 42 ′ are opposite to the The second pivoting portion 313 of the first support member 31 is pivoted such that the connecting structures 42, 42' of the keycap 4 are disposed on the first support member 31 and the second support member 32 of the support mechanism 3. In addition, the connecting structures 42, 42' are distributed around the peripheral edge of the top wall 411 of the keycap body 41, thereby making the keycap 4 more stable and less swayable when it is disposed on the support mechanism 3. In more detail, when the keycap 4 moves up and down relative to the bottom plate 1, the second pivoting portions 313 slide relative to the connecting structure 42' of the keycap 4 formed with the sliding groove 421', and The third pivoting portions 321 slide relative to the second hooks 13 of the bottom plate 1 . The keycap 4 further includes a pressing block 44 formed at a center of the bottom surface of the top wall 411 of the keycap body 41 and having a substantially circular shape. The button module 10 further includes a pressing block disposed on the key cap 4. An elastic member (not shown) is disposed between the film and the film board 2. The second support member 32 is further formed with a through hole 324 for the elastic member to extend. The elastic member has elasticity and supports the key. The cap 4 is used to transmit the pressing force of the keycap 4 to the film circuit board 2.

Referring to FIG. 1 to FIG. 3 , FIG. 6 and FIG. 7 , the holding structures 43 are formed on the bottom surface of the top wall 411 of the keycap body 41 at intervals from the connecting structures 42 , and the holding structures 43 are suitable for designing The jig 4 is disposed on the jig 5 to paint and laser engrave the key cap 4 before the key cap 4 is assembled to the support mechanism 3 of the button module 10, and When the jig 5 is disposed, the jig 5 is connected to the jig 5 without using the connecting structures 42 and 42 ′ to be connected to the jig 5 , and the connecting structures 42 and 42 can be avoided. 'The connecting structures 42, 42' are damaged by assembly and disassembly with the jig 5 to reduce the keycap 4 of the button module 10 from the supporting mechanism 3 due to the damage of the connecting structures 42, 42'. The probability of falling off. Moreover, since the holding structures 43 are not integrally formed with the connecting structures 42, 42', the supporting structures 43 are deformed when assembled and disassembled with the jig 5, and the connecting is not affected. The structure 42 and 42'; in addition, the mold can be used to form the tilting pin of the holding structure 43 and the connecting structure 42 when the mold (not shown) for manufacturing the keycap 4 is designed. The inclined pins of 42' can be separately arranged to prevent the above-mentioned oblique pins from being merged and the oblique pins are too large, so that the release of the keycap 4 is unsatisfactory, thereby avoiding the influence of product quality. The holding structures 43 are spaced apart from each other along the width direction D2 and are closer to the center of the top wall 411 of the keycap body 41 than the connecting structures 42. Further, the holding structures 43 are perpendicular to the width direction. The length direction D1 of the D2 is closer to the center of the top wall 411 of the keycap body 41 than the connecting structure 42. From another angle, the center point of the holding structure 43 is also adjacent to the key of the connecting structure 42. The center of the top wall 411 of the cap body 41. The fixture 5 includes a fixture body 51 and a carrier block 52. It can be inferred that the fixture 5 can also include a plurality of carrier blocks 52 for the plurality of keycaps 4 to be disposed. An embodiment is limited. The bearing block 52 is formed on the jig body 51 and is provided for the key cap 4. The bearing block 52 has a bearing surface 521 for abutting against the bottom surface of the top wall 411 of the keycap body 41, and is formed on the bearing block 52. The mounting surface 521 and the two mounting structures 522 corresponding to the holding structures 43 are formed on the bearing surface 521 and spaced apart from the mounting structures 522 for receiving the connecting structures 42 and 42. a plurality of escaping slots 523 that cooperate with the retaining structures 43 to be spaced apart from each other along the width direction D2 and that are closer to the center of the carrier block 52 than the escaping slots 523, more specifically The mounting structure 522 is adjacent to the center of the carrier block 52 in the length direction D1 perpendicular to the width direction D2, and the number of the mounting structures 522 can also be matched with the holding structure. The number of 43 is one or even three or more, and the avoidance slots 523 cooperate with the connecting structures 42, 42' to be located adjacent the periphery of the carrier block 52. In more detail, the holding structures 43 are formed to extend downward from the bottom surface of the top wall 411 of the keycap body 41 and are respectively formed with a latching groove 431. The mounting structures 522 are respectively formed on the bearing surface 521 and a recess 522a for receiving the retaining structure 43 of the keycap 4, and a latch formed at the recess 522a for engaging with the latching slot 431 of the retaining structure 43 of the keycap 4 Block 522b, but the configuration of the holding structure 43 and the mounting structures 522 may also be other configurations that cooperate with each other, and are not limited by the first embodiment. By being closer to the holding structure 43 at the center of the top wall 411 of the keycap body 41 than the connecting structures 42, 42', the keycap 4 can be more stable when the jig 4 is disposed on the jig 5, and is not easily The air gun for painting is blown to prevent the inner side of the keycap 4 from being painted, which affects the transmittance of the key cap 4 after the laser engraving of the radium engraving pattern. It should be noted that since the stability of the key cap 4 in use is the most important, the closer the connection structure 42 , 42 ′ provided on the support mechanism 3 is to the edge of the key cap body 41, the better. The holding structure 43 provided in the jig 5 is generally not excessive in number due to the spatial arrangement relationship. Therefore, the closer the holding structure 43 of the key cap 4 is to the center of the key cap body 41, the more the key cap 4 is disposed on the key cap 4 When the jig 5 is lifted by the principle of the lever or by the deflection, and the holding structure 43 of the keycap 4 is close to the center of the keycap body 41, the position of the connecting structures 42, 42' can be avoided. More specifically, in the first embodiment, the holding structures 43 are arranged at intervals along the width direction D2, so that the key caps 4 can obtain better fixing forces on both sides in the width direction D2. And in the aspect of reinforcing the fixing force of the two sides of the keycap 4 in the longitudinal direction D1, the holding structures 43 are disposed adjacent to the keycaps in the length direction D1 of the connecting structures 42, 42'. The manner of the center of the top wall 411 of the body 41 is such that the two sides of the keycap 4 are relatively evenly distributed in the longitudinal direction D1 to avoid the two sides of the keycap 4 in the longitudinal direction D1 during painting. One side is blown up by an air gun used for painting to cause a lift.

In addition, it should be noted that the positional design of the holding structures 43 is such that the holding structures 43 are arranged along a first direction of the button module 10, and the holding structures 43 are perpendicular to the first a first direction of a direction is closer to a center of the top wall 411 of the keycap body 41 than the connecting structures 42, 42'. In the first embodiment, the first direction is the width direction D2. The second direction is the length direction D1. In a variant embodiment, the first direction may be other directions different from the width direction D2, and the second direction may be other directions different from the length direction D1. For example, the first direction may be the length direction D1, and the second direction is the width direction D2, which is not limited to the first embodiment.

In the first embodiment, the support mechanism 3 is formed with two avoidance holes 33 for the retaining structures 43 to extend, and the avoidance holes 33 are formed in the first support member 31, thereby avoiding the The holding structure 43 occupies the internal space of the button module 10 to affect the arrangement position of the first support member 31 and the second support member 32. It should be noted that the number of the avoidance holes 33 should be adjusted according to the number of the holding structures 43 and is not limited to the first embodiment.

Referring to FIG. 8 to FIG. 10, a second embodiment of the present button module 10 is substantially the same as the first embodiment. However, in the second embodiment, the holding structures 43 are compared with the first embodiment. Further adjacent to the center of the top wall 411 of the keycap body 41, the avoidance holes 33 are formed in the second support member 32. The second embodiment provides another configuration of the holding structure 43. However, the configuration of the holding structure 43 can be adjusted according to requirements in practical applications, and should not be limited by the above embodiments.

In summary, the key cap 4 can be disposed on the jig 5 to spray and laser engrave the key cap 4 by the retaining structures 43 formed on the top wall 411 of the keycap body 41. And when the jig 5 is disposed, the fixing structure 43 is connected to the jig 5 without using the connecting structure 42 , 42 ′ to be connected to the jig 5 , and the connecting structure can be avoided. 42, 42' is damaged by the assembly and disassembly of the jig 5 to reduce the damage of the connecting structure 42, 42', so that the key cap 4 of the button module 10 is The probability of falling off on the support mechanism 3. Moreover, since the holding structures 43 are not integrally formed with the connecting structures 42, 42', the supporting structures 43 are deformed when assembled and disassembled with the jig 5, and the connecting is not affected. The structure 42, 42'; in addition, the mold can also be used to form the skew pin of the retaining structure 43 and the skew pin for forming the connecting structure 42, 42' when designing the mold for manufacturing the keycap 4. It can be separately set to prevent the above-mentioned oblique pin from being merged and the oblique pin is too large, so that the key cap 4 is not released smoothly, thereby avoiding affecting the product quality. Further, by means of the holding structures 43 at the center of the top wall 411 of the keycap body 41 of the connecting structures 42, 42', the keycap 4 can be provided when the jig 4 is disposed on the jig 5. It is stable and not easy to be blown by the air gun used for painting to prevent the inner side of the keycap 4 from being painted and affecting the transmittance of the key cap 4 after the laser engraving of the radium engraving pattern.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

10‧‧‧Key Module  1‧‧‧floor  11‧‧‧ board  12‧‧‧First card hook  13‧‧‧Second card  14‧‧‧stops  2‧‧‧Film board  3‧‧‧Support institutions  31‧‧‧First support  311‧‧‧ accommodating slots  312‧‧‧First pivotal  313‧‧‧Second pivotal  314‧‧‧ pivot slot  32‧‧‧second support  321‧‧‧ Third pivotal joint  322‧‧‧fourth pivotal department  323‧‧‧ pivot column  324‧‧‧through hole  33‧‧‧ Avoiding holes  4‧‧‧Key Cap  41‧‧‧Key Cap Body  411‧‧‧ top wall  412‧‧‧ Around the wall  42‧‧‧ Connection structure  421‧‧‧ card slot  42’‧‧‧ Connection structure  421’‧‧‧Chute  43‧‧‧ Holding structure  431‧‧‧ card slot  44‧‧‧ Pressing block  5‧‧‧ fixture  51‧‧‧ fixture body  52‧‧‧bearing block  521‧‧‧ bearing surface  522‧‧‧Installation structure  522a‧‧‧ recessed hole  522b‧‧‧ card block  523‧‧‧ escaping slot  D1‧‧‧ length direction  D2‧‧‧width direction  

Other features and effects of the present invention will be apparent from the following description of the drawings, in which:  1 is a perspective view of a first embodiment of the key module of the present invention;  Figure 2 is a perspective exploded view of the first embodiment;  Figure 3 is a perspective exploded perspective view of the first embodiment;  Figure 4 is a side elevational view of the first embodiment illustrating the state of the keycap of the embodiment when it is not pressed;  Figure 5 is a side elevational view of the first embodiment illustrating the state of the keycap of the embodiment when it is pressed;  Figure 6 is a perspective view showing the key cap of the first embodiment disposed on a jig;  Figure 7 is a perspective exploded view of Figure 6;  8 is a perspective view of a second embodiment of the key module of the present invention;  Figure 9 is a perspective exploded view of the second embodiment; and  Figure 10 is a further perspective exploded view of the second embodiment.  

Claims (19)

A key cap comprising:
a keycap body having a top wall and a surrounding wall extending downward from a periphery of the top wall;
a plurality of connecting structures formed on a bottom surface of the top wall of the keycap body and adapted to be disposed on a supporting mechanism; and at least one holding structure formed on the bottom surface of the top wall of the keycap body at intervals from the connecting structures And the at least one holding structure is adapted to be disposed on a jig to set the key cap to the jig. The keycap of claim 1, wherein the at least one retaining structure is adjacent the center of the top wall of the keycap body. The keycap of claim 1, wherein the connecting structures are distributed at adjacent peripheral edges of the top wall of the keycap body. The keycap of any one of claims 1 to 3, comprising two spaced apart structures adapted to be disposed in a jig. The keycap of claim 4, wherein the retaining structures are spaced apart along a first direction of the keycap, and the retaining structures are connected in a second direction perpendicular to the first direction. The structure is adjacent to the center of the top wall of the keycap body. A button module comprising:
a bottom plate;
a support mechanism is disposed on the bottom plate; and a key cap is disposed on the support mechanism to be movable up and down relative to the bottom plate, the key cap includes a key cap body, a plurality of connecting structures, and at least one holding structure, The key cap body has a top wall and a surrounding wall extending downward from the peripheral edge of the top wall. The connecting structures are formed on the bottom surface of the top wall of the keycap body and disposed on the supporting mechanism, the at least one holding The structure is formed at a bottom surface of the top wall of the keycap body at a distance from the connecting structure, and the at least one holding structure is adapted to be disposed on a jig to set the keycap to the jig. The button module of claim 6, wherein the at least one holding structure is adjacent to the center of the top wall of the keycap body. The button module of claim 6, wherein the connection structures are distributed at adjacent peripheral edges of the top wall of the keycap body. The key module of any one of claims 6 to 8, wherein the keycap comprises two holding structures spaced apart and adapted to be disposed in a jig. The button module of claim 9, wherein the holding structures are spaced apart along a first direction of the button module, and the holding structures are in a second direction perpendicular to the first direction. The connecting structure is adjacent to the center of the top wall of the keycap body. The button module of any one of claims 6 to 8, wherein the support mechanism is formed with at least one avoidance hole for the at least one holding structure to extend. The button module of claim 11, wherein the support mechanism comprises a first support member and a second support member, the first support member has a width greater than a width of the second support member, and the first The support member is formed with a receiving groove, and the second supporting member extends through the receiving groove to be alternately connected to the first supporting member between the bottom plate and the key cap. The button module of claim 12, wherein the key cap comprises two retaining structures spaced apart and adapted to be disposed on a jig, the support mechanism being formed with two avoidances for the retaining structures to extend Holes, the avoidance holes are formed in the first support. The button module of claim 12, wherein the key cap comprises two retaining structures spaced apart and adapted to be disposed on a jig, the support mechanism being formed with two avoidances for the retaining structures to extend Holes, the avoidance holes are formed in the second support. A jig for a keycap arrangement according to any one of claims 1 to 5, the jig comprising:
a fixture body; and a carrier block formed on the fixture body for providing the keycap, the carrier block having a bearing surface for abutting a bottom surface of the top wall of the keycap body, formed on At least one mounting structure for the corresponding at least one holding structure, and a plurality of escaping slots formed on the bearing surface at intervals from the at least one mounting structure and accommodating the connecting structures . The jig of claim 15, wherein the at least one mounting structure is adjacent to the center of the carrier block than the avoidance slots. The jig of claim 15, wherein the avoidance slots are located adjacent the periphery of the carrier block. The jig of any one of claims 15 to 17, wherein the carrier block has two mounting structures spaced apart. The jig of claim 18, wherein the mounting structures are spaced apart along a first direction of the jig, and the mounting structures are in a second direction perpendicular to the first direction. The bit slot is adjacent to the center of the carrier block.