Dial, watch, and method for manufacturing the dial

Abstract

To provide a dial plate capable of fixing parts to a dial plate body with a simple structure without impairing the aesthetic appearance. [Solution] The dial comprises a dial body with a through hole, and a first part inserted into the through hole and having a protrusion that protrudes from the back side of the dial body, with the first part fixed to the dial body by crimping, and is characterized in that the protrusion is provided with a crimp point group that includes multiple crimp points where the spacing between adjacent crimp points is smaller than a predetermined distance and the depth of the crimp points is shallower than a predetermined depth.

Description

[Technical Field]

[0001] The present invention relates to a dial, a timepiece, and a method for manufacturing a dial. [Background technology]

[0002] Patent Document 1 discloses a method for fixing a window frame member to a display board. In Patent Document 1, locking pieces provided on the window frame member are bent and housed in locking recesses or steps provided on the substrate, so that the window frame member can be fixed to the display board without having to be crimped with high pressure. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-31056 Summary of the Invention [Problem to be solved by the invention]

[0004] In Patent Document 1, it is necessary to provide locking pieces on the window frame member and to provide locking recesses or steps on the substrate, which causes a problem of a complex component structure. [Means for solving the problem]

[0005] The dial disclosed herein comprises a dial body having a through hole, and a first part inserted into the through hole and having a protrusion protruding from the back side of the dial body, with the first part fixed to the dial body by crimping, and is characterized in that the protrusion is provided with a crimp point group having a plurality of crimp points, the spacing between adjacent crimp points being smaller than a predetermined distance and the depth of the crimp points being shallower than a predetermined depth.

[0006] The timepiece of the present disclosure is characterized by comprising the dial and an exterior case that houses the dial.

[0007] The method for manufacturing a dial disclosed herein comprises a dial body having a through hole and a first part inserted into the through hole and having a protrusion protruding from the back side of the dial body, and the first part is fixed to the dial body by crimping, and is characterized by including a step of providing a crimping point group on the protrusion, the crimping point group including a plurality of crimping points, the spacing between adjacent crimping points being smaller than a predetermined distance and the depth of the crimping points being shallower than a predetermined depth. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a front view showing a timepiece according to a first embodiment. [Figure 2] FIG. 2 is a rear view showing the main part of the dial of the first embodiment. [Figure 3] FIG. 2 is a side view showing a main part of the dial of the first embodiment. [Figure 4] FIG. 3 is a side view showing a method for manufacturing the dial of the first embodiment. [Figure 5] FIG. 3 is a side view showing a method for manufacturing the dial of the first embodiment. [Figure 6] FIG. 3 is a side view showing a method for manufacturing the dial of the first embodiment. [Figure 7] FIG. 4 is a rear view showing the method for manufacturing the dial of the first embodiment. [Figure 8] FIG. 4 is a rear view showing the method for manufacturing the dial of the first embodiment. [Figure 9] FIG. 4 is a rear view showing the method for manufacturing the dial of the first embodiment. [Figure 10] FIG. 4 is a rear view showing the method for manufacturing the dial of the first embodiment. [Figure 11] FIG. 10 is a rear view showing the main part of the dial of the second embodiment. [Figure 12] FIG. 10 is a side view showing the main part of the dial of the second embodiment. [Figure 13] FIG. 10 is a rear view showing the main part of the dial of the modified example. DETAILED DESCRIPTION OF THE INVENTION

[0009] [First embodiment] A timepiece 1 according to a first embodiment of the present disclosure will now be described with reference to the drawings. 1 is a front view of the timepiece 1. In this embodiment, the timepiece 1 is configured as a wristwatch that is worn on the user's wrist. As shown in FIG. 1, the timepiece 1 includes an outer case 18 , and an hour hand 11 , a minute hand 12 , a second hand 13 , and a dial 14 housed within the outer case 18 .

[0010] [Dial] Fig. 2 is a rear view showing the main parts of the dial 14 of this embodiment, and Fig. 3 is a side view showing the main parts of the dial 14. Note that Fig. 3 shows the back surface 152 of the dial main body 15 facing upward. As shown in FIGS. 1 to 3, in this embodiment, the dial 14 includes a dial body 15 and a date window 16.

[0011] The dial body 15 is flat and has a rectangular through-hole 153 that penetrates from a front surface 151 to a back surface 152 at a location corresponding to the date window 16.

[0012] The date window 16 is made of metal and is formed in a rectangular frame shape that covers the periphery of a through-hole 153 formed in the dial main body 15, and is inserted into the through-hole 153. In this embodiment, the date window 16 is fixed to the dial main body 15 by caulking. The date window 16 is an example of a first part of the present disclosure.

[0013] In this embodiment, the date window 16 has a frame-shaped portion 161 and a protruding portion 162. The frame-shaped portion 161 is rectangular and is arranged so as to cover a portion of the front surface 151 of the dial main body 15. The protrusion 162 is formed so as to protrude from the frame-shaped portion 161 toward the back surface 152 of the dial main body 15. In this embodiment, a crimping point group 17 having a plurality of crimping points 164 is provided on a tip surface 163 of the protrusion 162.

[0014] Furthermore, the date window 16 formed by the frame-shaped portion 161 and the protrusion 162 has two sets of opposing sides. Specifically, the date window 16 has one set of opposing first sides 165 and one set of opposing second sides 166. The pair of opposing first sides 165 are press-fitted into the through-holes 153, and a gap is formed between the pair of opposing second sides 166 and the through-holes 153.

[0015] The crimping point 164 is formed by recessing the tip surface 163 of the protrusion 162. In this embodiment, as will be described later, the crimping point 164 is formed by recessing the tip surface 163 using a crimping tool 20 with a cone-shaped tip. As a result, part of the protrusion 162 is deformed, and it covers part of the back surface 152 of the dial body 15. In this manner, in this embodiment, the date window 16 is fixed to the dial main body 15 by sandwiching the dial main body 15 between the frame-shaped portion 161 and the protruding portion 162.

[0016] In this embodiment, the crimping points 164 are formed so that the distance between adjacent crimping points 164 is smaller than a predetermined distance and the depth is shallower than the predetermined depth. Specifically, the crimping points 164 are formed so that the distance between each crimping point 164 is 0.3 mm. As a result, the crimping points 164 for protruding the protrusions 162 on the back surface 152 side of the dial main body 15 are closely spaced, so the protrusions 162 can be made to protrude from the back surface 152 side of the dial main body 15 without increasing the depth of each crimping point 164. This prevents the date window 16 from being deformed, which would spoil the aesthetic appearance, and allows the date window 16 to be fixed to the dial main body 15 with a simple structure. In the present disclosure, the interval of 0.3 mm at which the crimping points 164 are formed may include some error.

[0017] Furthermore, in this embodiment, when viewed from the side, if the height from the back surface 152 of the dial body 15 adjacent to the crimping point group 17 to the tip surface 163 of the protrusion 162 is h and the depth of the crimping point 164 is d, each crimping point 164 is formed so as to satisfy the following formula (1).

[0018] [Number 1] 0.05mm <d<h …(1)

[0019] More specifically, in this embodiment, the height h from the back surface 152 to the tip surface 163 of the protrusion 162 is 0.27 mm, and the depth d of the crimping point 164 is 0.15 mm. By making the depth d of the crimping point 164 greater than 0.05 mm and less than the height h from the back surface 152 at a location on the dial main body 15 adjacent to the crimping point group 17 to the tip surface 163 of the protrusion 162, deformation of the date window 16 can be suppressed. Furthermore, the protrusion 162 can be made to protrude toward the back surface 152 of the dial main body 15 sufficiently to secure the date window 16 to the dial main body 15. The depth d of the crimping point 164 is not limited to the above-described configuration and may be, for example, 0.10 mm or 0.20 mm, as long as the depth d satisfies the above-described formula (1). In this disclosure, being sufficient to fix the date window 16 to the dial body 15 means fixing by crimping to an extent that the dial body 15 does not come off the date window 16 during the impact test specified in JIS B 7027.

[0020] In this embodiment, the crimping point group 17, which is made up of each crimping point 164, is provided in multiple locations along the date window 16. Specifically, the crimping point group 17 is provided in four locations on a pair of opposing first sides 165. That is, the crimping point group 17 is provided at positions corresponding to the four corners of the rectangular date window 16. As a result, the crimping point group 17 is provided along the first side 165 that is press-fitted into the through hole 153, so the process of providing the crimping point group 17 can be shortened compared to when the crimping point group 17 is provided along the entire circumference of the frame of the date window 16. Furthermore, as described above, a gap is formed between the pair of opposing second sides 166 and the through hole 153, so it is possible to reduce the number of date windows 16 that cannot be inserted into the through hole 153 due to manufacturing tolerances.

[0021] In this embodiment, the crimping point groups 17 provided at four locations along the first side 165 have the same shape. Specifically, each crimping point group 17 is made up of two crimping point sequences 171, 172, consisting of a first crimping point sequence 171 formed on the inside and a second crimping point sequence 172 formed on the outside. In this embodiment, each of the crimping point sequences 171, 172 is made up of eight crimping points 164.

[0022] As described above, in this embodiment, the multiple crimping point groups 17 have the same shape, which makes it easier to design the crimping point groups 17. Furthermore, each crimping point group 17 is composed of a first crimping point sequence 171 formed on the inside and a second crimping point sequence 172 formed on the outside. This allows the first crimping point sequence 171 to cause the protrusion 162 to protrude relative to the dial main body 15, and then the second crimping point sequence 172 to cause the protrusion 162 to protrude relative to the dial main body 15. Therefore, even if the depth of each crimping point 164 is not increased, the protrusion 162 can protrude relative to the back surface 152 of the dial main body 15 to an extent sufficient to fix the date window 16 to the dial main body 15.

[0023] [Dial manufacturing method] Next, a method for manufacturing the dial 14 will be described. 4 to 10 are diagrams showing a method for manufacturing the dial 14. First, as shown in Figure 4, the protrusion 162 of the date window 16 is inserted into the through-hole 153 of the dial main body 15. At this time, the first edge 165 of the date window 16 is press-fitted into the through-hole 153. As a result, a portion of the date window 16 is press-fitted into the through-hole 153, and the date window 16 is temporarily fixed to the dial main body 15.

[0024] Next, as shown in Figure 5, a cone-shaped crimping tool 20 is used to form a recess on the inside of the tip surface 163 of the protrusion 162 at a position corresponding to one of the four corners of the first side 165 of the date window 16. This forms a crimping point 164. The same operation is then repeated eight times along the first side 165 to form a first crimping point sequence 171 consisting of eight crimping points 164. At this time, the crimping points 164 are formed so that the intervals between each of the crimping points 164 that make up the first crimping point sequence 171 are 0.3 mm.

[0025] Next, as shown in Fig. 6, a crimping tool 20 is used to form recesses on the outside of the crimping points 164 that make up the first crimping point sequence 171. This provides the crimping points 164. The same operation is then repeated eight times along the first side 165 to form a second crimping point sequence 172 made up of eight crimping points 164. At this time, the crimping points 164 are formed so that the intervals between the crimping points 164 that make up the second crimping point sequence 172 are 0.3 mm and that the intervals between adjacent crimping points 164 that make up the first crimping point sequence 171 are 0.3 mm.

[0026] As a result, as shown in FIG. 7, one of the crimping point groups 17 is formed, which is made up of the first crimping point sequence 171 and the second crimping point sequence 172. Next, as shown in Fig. 8, the same operation as above is performed at the diagonal positions of the crimping point group 17 formed by the above operation. As a result, the crimping point group 17 is formed at the diagonal positions of the date window 16.

[0027] Next, as shown in Figure 9, a crimping point group 17 is formed at a position corresponding to one of the four corners of the first side 165 of the date window 16 by performing the same operation as described above, and then, as shown in Figure 10, a crimping point group 17 is formed at a diagonal position of the formed crimping point group 17. As a result, four crimping point groups 17 are formed at positions corresponding to the four corners of the first side 165 of the date window 16. That is, in this embodiment, 16 crimping points 164 per crimping point group 17, for a total of 64 crimping points 164, are provided on the tip surface 163 of the protrusion 162 of the date window 16. In this way, in this embodiment, crimping point groups 17 are formed at diagonal positions at the four corners of the first side 165 of the date window 16, which makes it possible to prevent uneven deformation of the date window 16. Therefore, the date window 16 can be more reliably fixed to the dial body 15 without impairing the aesthetic appearance.

[0028] [Effects of the first embodiment] According to the first embodiment, the following effects can be obtained. In this embodiment, a crimping point group 17 is provided for the protruding portion 162 of the date window 16, with adjacent crimping points 164 spaced less than a predetermined distance apart and with a plurality of crimping points 164 that are shallower than a predetermined depth. This allows the crimping points 164 for protruding the protruding portion 162 toward the back surface 152 of the dial main body 15 to be densely packed, so the protruding portion 162 can be protruded toward the back surface 152 of the dial main body 15 without increasing the depth of each crimping point 164. This prevents the date window 16 from being deformed, which would damage its appearance, and allows the date window 16 to be fixed to the dial main body 15 with a simple structure.

[0029] In this embodiment, the interval between the crimping points 164 is set to 0.3 mm, so that the crimping points 164 can be arranged closely together.

[0030] In this embodiment, by making the depth d of the crimping point 164 greater than 0.05 mm and less than the height h from the back surface 152 of the dial body 15 adjacent to the crimping point group 17 to the tip surface 163 of the protrusion 162, deformation of the date window 16 can be prevented, and the protrusion 162 can be made to protrude toward the back surface 152 of the dial body 15 to an extent sufficient to fix the date window 16 to the dial body 15.

[0031] In this embodiment, the caulking points 17 are provided at a plurality of locations along the frame of the date window 16, so that the fixation of the date window 16 to the dial body 15 can be made stronger.

[0032] In this embodiment, the plurality of crimping point groups 17 are provided in the same shape, so that the design of the plurality of crimping point groups 17 can be facilitated.

[0033] In this embodiment, the first crimping point sequence 171 causes the protrusion 162 to protrude relative to the dial main body 15, and the second crimping point sequence 172 causes the protrusion 162 to protrude relative to the dial main body 15. Therefore, even if the depth of each crimping point 164 is not large, the protrusion 162 can be made to protrude relative to the back surface 152 of the dial main body 15 to an extent sufficient to fix the date window 16 to the dial main body 15.

[0034] In this embodiment, the crimping point group 17 is provided along the first side 165 that is press-fit into the through hole 153, so the process of providing the crimping point group 17 can be shortened compared to when the crimping point group 17 is provided along the entire circumference of the date window 16. Furthermore, a gap is formed between the second side 166 and the through hole 153, so it is possible to reduce the number of date windows 16 that cannot be inserted into the through hole 153 due to manufacturing tolerances.

[0035] [Second embodiment] Next, a dial 14A according to a second embodiment of the present invention will be described. The dial 14A of the second embodiment differs from the first embodiment in that a recess 154A is formed at a position corresponding to the crimping point group 17A on the back surface 152 of the dial body 15A. In the second embodiment, the same or similar components as those in the first embodiment are denoted by the same reference numerals, and descriptions thereof will be omitted.

[0036] Fig. 11 is a rear view showing the main part of the dial 14A of this embodiment, and Fig. 12 is a side view showing the main part of the dial 14A. In Fig. 12, the back surface 152A of the dial main body 15A is shown facing up. As shown in FIGS. 11 and 12, in this embodiment, recesses 154A are formed on the back surface 152A of the dial main body 15A at positions corresponding to the crimping point group 17A. As a result, even if the height H of the protrusion 162A of the date window 16A is small compared to the thickness D of the dial main body 15A, the thickness of a portion of the dial main body 15A is reduced, making it possible to increase the height h1 from the back surface 152A of the dial main body 15A adjacent to the crimping point group 17A to the tip surface 163A of the protrusion 162A. As a result, it is possible to provide a crimping point 164A with a depth d that satisfies the formula (1) of the first embodiment described above.

[0037] [Effects of the second embodiment] According to the second embodiment, the following effects can be obtained. In this embodiment, a recess 154A is formed at a position corresponding to the crimping point group 17A on the back surface 152A side of the dial body 15A, so that even if the height H of the protrusion 162A is small compared to the thickness D of the dial body 15A, a crimping point 164A of a depth d that satisfies formula (1) can be provided.

[0038] [Variations] The present disclosure is not limited to the above-described embodiments, and includes modifications, improvements, etc. within the scope of achieving the object of the present disclosure.

[0039] FIG. 13 is a rear view showing the main part of a modified dial 14B. As shown in Figure 13, in the modified dial 14B, two crimping point groups 17B consisting of 46 crimping points 164B are provided along a pair of opposing first sides 165B of the date window 16B, thereby fixing the date window 16B to the dial main body 15B. In this way, the crimping points are not limited to being provided at positions corresponding to the four corners of the date window, but may be provided at two locations along a pair of opposing sides.Furthermore, crimping points may be provided at four locations on the protruding portion of the date window, as long as they are provided in a way that allows the date window to be fixed to the dial body.

[0040] In the above-described embodiments, the crimping point clouds 17, 17A, and 17B are each composed of two crimping point sequences 171 and 172. However, the present invention is not limited to this. For example, the crimping point cloud may be composed of one crimping point sequence, or may be composed of three or more crimping point sequences.

[0041] In the above-described embodiments, the crimping point cloud 17 is formed by forming the first inner crimping point sequence 171 and the second outer crimping point sequence 172 in this order at a position corresponding to one of the four corners of the first side 165 of the date window 16, 16A, and then crimping point clouds are formed sequentially at positions corresponding to the other four corners, but this is not limiting. For example, the crimping point clouds may be formed at the four corners by sequentially forming the first inner crimping point sequence at each of the four corners of the first side of the window, and then sequentially forming the second outer crimping point sequence at each of the four corners.

[0042] In the above-described embodiments, the interval between adjacent crimping points 164, 164A, and 164B is 0.3 mm, but this is not limiting. For example, the interval between adjacent crimping points may be 0.2 mm, as long as the interval allows the crimping points to be closely spaced.

[0043] In the above-described embodiments, the plurality of crimping point groups 17, 17A, and 17B are provided in the same shape, but this is not limitative. For example, a plurality of crimping point groups each having a different shape may be provided.

[0044] Summary of this disclosure The dial disclosed herein comprises a dial body having a through hole, and a first part inserted into the through hole and having a protrusion protruding from the back side of the dial body, with the first part fixed to the dial body by crimping, and is characterized in that the protrusion is provided with a crimp point group having a plurality of crimp points, the spacing between adjacent crimp points being smaller than a predetermined distance and the depth of the crimp points being shallower than a predetermined depth.

[0045] In the present disclosure, a crimping point group is provided for the protruding portion of the first component, with adjacent crimping points spaced less than a predetermined distance apart and each crimping point having a depth shallower than a predetermined depth. This allows the crimping points for protruding the protruding portion from the back side of the dial body to be densely packed, so the protruding portion can be protruded from the back side of the dial body without increasing the depth of each crimping point. This prevents the first component from being deformed, which would otherwise damage the appearance, and allows the first component to be fixed to the dial body with a simple structure.

[0046] In the dial of the present disclosure, the predetermined interval may be 0.3 mm. This allows the distance between the crimping points to be 0.3 mm, so the crimping points can be placed closely together.

[0047] In the dial of the present disclosure, when viewed from the side, if the height from the surface of the dial body at a point adjacent to the crimping point group to the tip surface of the protrusion is h and the predetermined depth of the crimping point is d, the following formula (1) may be satisfied. 0.05mm <d<h …(1) As a result, by making the depth d of the crimping points greater than 0.05 mm and less than the height h from the surface of the dial body at the point adjacent to the crimping point group to the tip surface of the protrusion, deformation of the first part can be prevented, and the protrusion can be made to protrude from the back side of the dial body to an extent sufficient to fix the first part to the dial body.

[0048] In the dial of the present disclosure, the first component may be formed in a frame shape that covers the periphery of the through-hole, and the crimping point group may be provided at a plurality of locations along the frame of the first component. As a result, a group of crimping points is provided at multiple locations along the frame of the first part, making it possible to firmly fix the first part to the dial body.

[0049] In the dial of the present disclosure, the plurality of crimping point groups may be provided in the same shape. This makes it easier to design a group of multiple caulking points.

[0050] In the dial of the present disclosure, the crimping point group may be configured by the crimping points arranged in a plurality of rows. This allows the protruding portions to protrude from the dial body in one row, and then the protruding portions to protrude further from the dial body in the second and subsequent rows. Therefore, even without increasing the depth of each crimping point, the protruding portions can protrude from the back side of the dial body to an extent sufficient to fix the first component to the dial body.

[0051] In the dial of the present disclosure, the first part may be formed in the shape of a rectangular frame having two sets of opposing sides, one of the two sets of opposing sides being pressed into the through hole, a gap being formed between the other of the two sets of opposing sides and the through hole, and the plurality of crimping point groups may be arranged along one of the two opposing sides. As a result, the crimping point cloud is provided along one of the two sets of opposing sides that is press-fitted into the through hole, which shortens the process of providing the crimping point cloud compared to providing the crimping point cloud along the entire circumference of the frame of the first component. Furthermore, because a gap is formed between the other two opposing sides and the through hole, it is possible to reduce the number of first components that cannot be inserted into the through hole due to manufacturing tolerances.

[0052] The timepiece of the present disclosure is characterized by comprising the dial and a case that houses the dial.

[0053] The method for manufacturing a dial disclosed herein comprises a dial body having a through hole and a first part inserted into the through hole and having a protrusion protruding from the back side of the dial body, and the first part is fixed to the dial body by crimping, and is characterized by including a step of providing a crimping point group on the protrusion, the crimping point group including a plurality of crimping points, the spacing between adjacent crimping points being smaller than a predetermined distance and the depth of the crimping points being shallower than a predetermined depth.

[0054] This disclosure includes a process for providing a crimping point group on the protruding portion of the first component, the crimping points being spaced apart by a predetermined distance and each crimping point being shallower than a predetermined depth. This allows the crimping points for protruding the protruding portion from the back side of the dial body to be densely packed, allowing the protruding portion to protrude from the back side of the dial body without increasing the depth of each crimping point. This prevents the first component from being deformed, which would otherwise damage the appearance, and allows the first component to be fixed to the dial body with a simple structure. [Explanation of symbols]

[0055] 1...clock, 11...hour hand, 12...minute hand, 13...second hand, 14, 14A, 14B...dial, 15, 15A, 15B...dial body, 16, 16A, 16B...date window (first part), 17, 17A, 17B...crimping point cloud, 18...exterior case, 20...crimping tool, 151...surface, 152, 152A...back, 153...through hole, 154A...recess, 161...frame-shaped portion, 162, 162A...protruding portion, 163, 163A...tip surface, 164, 164A, 164B...crimping point, 165, 165B...first edge, 166...second edge, 171...first crimping point sequence, 172...second crimping point sequence.

Claims

1. A dial comprising: a dial body having a through hole; and a first part inserted into the through hole and having a protrusion protruding from a back side of the dial body, wherein the first part is fixed to the dial body by caulking; The protrusion is provided with a group of crimping points including a plurality of crimping points, the distance between adjacent crimping points being smaller than a predetermined distance and the depth of the crimping points being shallower than a predetermined depth. A dial characterized by

2. 2. The dial according to claim 1, The predetermined interval is set to 0.3 mm. A dial characterized by

3. 2. The dial according to claim 1, When viewed from the side, if the height from the surface of the dial body at a location adjacent to the crimping point group to the tip surface of the protrusion is h and the predetermined depth of the crimping point is d, the following formula (1) is satisfied: A dial characterized by 0.05mm<d<h...(1)

4. 2. The dial according to claim 1, the first component is formed in a frame shape that covers the periphery of the through hole, The caulking point group is provided at a plurality of locations along the frame of the first part. A dial characterized by

5. 5. The dial according to claim 4, The plurality of caulking points are provided in the same shape. A dial characterized by

6. 5. The dial according to claim 4, The crimping point group is composed of the crimping points arranged in a plurality of rows. A dial characterized by

7. 5. The dial according to claim 4, the first component is formed in a rectangular frame shape having two sets of two opposing sides, one of the two sets of two opposing sides is press-fitted into the through hole, a gap is formed between the other pair of opposing sides of the two pairs of opposing sides and the through hole; The plurality of caulking points are provided along two opposing sides of the one of the two sides. A dial characterized by

8. The dial according to claim 1; an exterior case that houses the dial; A watch characterized by

9. A method for manufacturing a dial comprising: a dial body having a through hole; and a first part inserted into the through hole and having a protrusion protruding from a back side of the dial body, wherein the first part is fixed to the dial body by caulking, and providing a group of crimping points on the protrusion, the group of crimping points including a plurality of crimping points, the distance between adjacent crimping points being smaller than a predetermined distance and the depth of the crimping points being shallower than a predetermined depth. A method for manufacturing a dial, comprising:

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