Slide member, manufacturing method thereof, and watch

Abstract

To provide a slide pressing member capable of extending a function by preventing the positional deviation of display, a method for manufacturing the same, and a watch having them.SOLUTION: The slide pressing member includes a support member 13 which is arranged in a watch module 8 which is a first member having an electronic part and supports the watch module 8 and a slidable resin sheet 14 which is stuck to the support member 13 and pressed against a rear lid 7 which is a second member rotatably arranged with respect to the watch module 8. Thus, a load caused by the friction resistance of the resin sheet 14 caused by the rotation of the rear lid 7 is reduced so that the rotation of the slide pressing member 12 caused by the rotation of the rear lid 7 is prevented to prevent the positional deviation of the display of the watch module 8. Further, the support member 13 and the resin sheet are integrated to simplify assembly work and the restriction of the rear lid 7 due to the resin sheet 14 is reduced to extend the function.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a presser foot used in an electronic device such as a wristwatch, a method for manufacturing the same, and a timepiece equipped with the same. [Background technology]

[0002] For example, in the case of wristwatches, as described in Patent Document 1, a structure is known in which a male threaded portion on the outer periphery of the back cover is screwed into a female threaded portion on the bottom of the watch case, thereby preventing the watch module inside the watch case from rotating as the back cover is rotated when the back cover is attached to the watch case. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-183650

[0004] This type of wristwatch is configured so that a pressure plate is provided on the underside of the watch module, a sliding member is provided on the inside of the back cover, and multiple protrusions provided along the periphery of the pressure plate are pressed against this sliding member, and when the back cover is rotated and attached to the watch case in this state, the multiple protrusions on the pressure plate slide over the surface of the sliding member, preventing the watch module from rotating inside the watch case and preventing misalignment of the displays on the watch module, such as the time display. Summary of the Invention [Problem to be solved by the invention]

[0005] However, in such wristwatches, the sliding member is mounted on the inside of the back cover, which restricts the back cover, making it difficult to add functions such as a piezoelectric element to the back cover.

[0006] The problem to be solved by this invention is to provide a presser member that can prevent misalignment of a display and enable additional functions to be added, a method for manufacturing the same, and a timepiece equipped with the same. [Means for solving the problem]

[0007] This invention is Contacts electrically connected to the circuit and a first member having Ta A support member and a resin sheet having slipperiness that is attached to the support member and pressed against a second member that is rotatably disposed relative to the first member. The resin sheet is provided at a position where it does not come into contact with the contacts. The present invention relates to a presser foot member. [Effects of the Invention]

[0008] According to this invention, it is possible to prevent the display from shifting in position and to add functions. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is an enlarged front view showing an embodiment of a wristwatch to which the present invention is applied. [Figure 2] 2 is an enlarged cross-sectional view of the wristwatch shown in FIG. 1 taken along the line AA. [Figure 3] 3 is an enlarged perspective view of the wristwatch shown in FIG. 2, seen from the back, with the back cover removed. FIG. [Figure 4] 4 is an exploded enlarged perspective view of the wristwatch shown in FIG. 3, showing the shock absorber, slide stopper, and back cover. FIG. [Figure 5] 5 is an exploded enlarged perspective view showing a presser member disposed below the cushioning member shown in FIG. 4. FIG. [Figure 6] FIG. 3 is an enlarged perspective view showing the inside of the back cover of the wristwatch shown in FIG. 2. [Figure 7] 6 is an enlarged perspective view showing a resin sheet body in which a resin sheet provided with an adhesive layer is sandwiched between a protective sheet and a release sheet in the presser member shown in FIG. 5. FIG. [Figure 8]5 shows a method for manufacturing the press-on member shown in FIG. 4, in which (a) is a perspective view showing the positioning jig, (b) is a perspective view showing the state in which the support member is positioned on the positioning jig, (c) is a perspective view showing the state in which the protective sheet is positioned on the positioning jig and the resin sheet is attached to the support member, and (d) is a perspective view showing the press-on member in which the protective sheet has been peeled off and the resin sheet has been attached to the support member. DETAILED DESCRIPTION OF THE INVENTION

[0010] An embodiment of a wristwatch to which the present invention is applied will now be described with reference to FIGS. As shown in Figures 1 to 3, this wristwatch has a wristwatch case 1. This wristwatch case 1 has a case body 2 and an exterior member 3. The case body 2 is made of metal such as stainless steel or titanium alloy, and is provided with band attachment projections 2a on the 12 o'clock and 6 o'clock sides.

[0011] As shown in Figures 1 to 3, the exterior member 3 includes first to third exterior members 3a to 3c. The first exterior member 3a is a side bezel made of metal or synthetic resin and is disposed on the sides of the case main body 2 at the 3 o'clock and 9 o'clock sides, covering them. The second exterior member 3b is a top bezel made of metal or synthetic resin and is disposed above the case main body 2 and first exterior member 3a, covering them.

[0012] 1 to 3, the third exterior member 3c is a band mounting bezel that is made of metal or synthetic resin and is disposed above the band mounting protrusion 2a of the case body 2. The third exterior member 3c is attached to the band mounting protrusion 2a of the case body 2 with a plurality of screw members 3d.

[0013] As a result, as shown in Figures 1 to 3, when the third exterior member 3c is screwed and fixed to the band mounting protrusion 2a of the case main body 2 using multiple screw members 3d, the second exterior member 3b is fixed to the top of the case main body 2 by this third exterior member 3c, and the first exterior member 3a is fixed to the side of the case main body 2 by this second exterior member 3b.

[0014] 1 and 2, band attachment sections 4 for attaching a watch band (not shown) are provided on the 12 o'clock and 6 o'clock sides of this wristwatch case 1. These band attachment sections 4 are composed of band attachment protrusions 2a on the case main body 2 and a third exterior member 3c, which is a band attachment bezel. Switch buttons 5 are provided on the 2 o'clock, 4 o'clock, 8 o'clock, and 10 o'clock sides of the case main body 2 and the first exterior member 3a, which is a side bezel, of this wristwatch case 1.

[0015] As shown in Figures 1 and 2, a crystal 6 is attached via a gasket 6a to the upper opening of the watch case 1, i.e., the upper opening of the case body 2. A back cover 7 is attached via a waterproof ring 7a to the lower part of the watch case 1, i.e., the lower part of the case body 2. The back cover 7 is formed in a roughly circular plate shape from a conductive metal such as titanium alloy (6-4Ti alloy) or stainless steel.

[0016] 2 and 6, the inner periphery of back cover 7 is formed higher, and a female thread 7b is provided on the inner periphery of this higher step. Back cover 7 is thereby attached to case body 2 of wristwatch case 1 by rotating and screwing female thread 7b into male thread 2b provided on the lower outer periphery of case body 2 of wristwatch case 1.

[0017] Furthermore, inside this wristwatch case 1, that is, inside the case body 2, a clock module 8 is arranged via an inner frame 9, as shown in Figures 2 to 4. This clock module 8 is equipped with a housing 10 (see Figure 4). Although not shown, this housing 10 is equipped with various electronic components necessary for clock functions, such as a clock movement that moves hands to indicate and display the time, a display unit that electro-optically displays information such as the time, date, and day of the week, and circuits that drive and control these components.

[0018] As shown in Figures 2 to 5, a presser member 12 is disposed on the underside of this watch module 8, i.e., the underside of the housing 10, with a buffer member 11 in between. The presser member 12 has a two-layer structure made by laminating a support member 13 and a resin sheet 14. The support member 13 is formed into a thin, roughly ring-shaped plate made of a highly rigid metal such as stainless steel.

[0019] As shown in Fig. 5, this support member 13 has multiple protrusions 13a formed around its circumference. These multiple protrusions 13a are formed by pressing the support member 13 so that they each protrude downward, on the side opposite the watch module 8. Additionally, this support member 13 has multiple position restriction sections 15 that restrict its position relative to the watch module 8, which protrude toward the side opposite the multiple protrusions 13a (the upper side in Fig. 5), i.e., the watch module 8 side.

[0020] 4 and 5, these multiple position restriction parts 15 are provided diagonally opposite each other on the outer periphery of support member 13, and are configured to be inserted into housing 10 of watch module 8 and attached to housing 10 via buffer members 11. In this way, the multiple position restriction parts 15 restrict the position of support member 13 relative to watch module 8 in the rotational direction and radial direction in the planar direction.

[0021] 3 to 5, buffer member 11 is made of a resilient material such as rubber and is formed into a circular plate shape that is roughly the same size as the outer diameter of support member 13. This buffer member 11 is provided with a plurality of elastic protrusions 11a that correspond to the plurality of protrusions 13a of support member 13, and a plurality of buffer cutouts 11b into which the plurality of position restriction portions 15 of support member 13 are inserted. As a result, buffer member 11 is configured so that its outer periphery is resiliently pressed against the underside of housing 10 of watch module 8 by support member 13.

[0022] On the other hand, as shown in Figures 3 to 5, resin sheet 14 is made of a synthetic resin with high slipperiness, such as fluororesin. The synthetic resin with high slipperiness used for this resin sheet should preferably have a lower coefficient of friction than, for example, stainless steel, and even more preferably, a lower coefficient of friction than polyethylene terephthalate (PET). Resin sheet 14 is divided into multiple pieces, which are attached to the underside of support member 13 by adhesive layer 16 (see Figure 7), covering the multiple protrusions 13a. Resin sheet 14 is configured so that, when back cover 7 is attached to the bottom of watch case 1, multiple locations on support member 13 corresponding to the multiple protrusions 13a are pressed against the inner surface of back cover 7.

[0023] 3 to 5, this presser member 12 has a structure in which a slippery resin sheet 14 is attached to a highly rigid support member 13, integrating the support member 13 and the resin sheet 14. As a result, this presser member 12 is configured so that the highly rigid support member 13 evenly and reliably presses the resin sheet 14 against the inner surface of the back cover 7, forcing the resin sheet 14 into contact with the inner surface of the back cover 7.

[0024] As a result, as shown in Figures 3 to 5, this anti-slip member 12 is configured so that when the back cover 7 is rotated and attached to the bottom of the watch case 1, the male threaded portion 2b of the case body 2 is screwed into the female threaded portion 7b of the back cover 7, and the portions of the resin sheet 14 that correspond to the multiple protrusions 13a of the support member 13 are pressed against the inner surface of the back cover 7 in an almost point contact state, and slide while sliding.

[0025] Therefore, as shown in Figures 3 to 5, this anti-slip member 12 is configured so that the male threaded portion 2b of the case body 2 is screwed into the female threaded portion 7b of the back cover 7, so that when the back cover 7 is attached to the watch case 1 while being rotated, the load caused by the frictional resistance of the resin sheet 14 against the back cover 7 as the back cover 7 rotates is reduced by the slipperiness of the resin sheet 14, and the watch module 8 does not rotate within the watch case 1 as the back cover 7 rotates.

[0026] Furthermore, as shown in Figures 3 to 5, when the support member 13 is pressed toward the watch module 8 by the inner surface of the back cover 7 attached to the bottom of the watch case 1, the portions of the support member 13 corresponding to the multiple protrusions 13a push up the multiple elastic protrusions 11a of the buffer member 11, thereby pressing the entire buffer member 11 against the housing 10 of the watch module 8.

[0027] As a result, as shown in Figures 2 to 5, when the support member 13 presses the buffer member 11 against the housing 10 of the watch module 8, the anti-slip member 12 is configured to elastically press the watch module 8 into the watch case 1 without rattling due to the elasticity of the buffer member 11, and to press the resin sheet 14 against the inner surface of the back cover 7 due to the elasticity of the buffer member 11.

[0028] Incidentally, a piezoelectric element 17 is provided in the center of the back cover 7, as shown in Figures 2 and 6. This piezoelectric element 17 is formed in a disk shape and is configured to vibrate when voltage is applied to it, emitting a warning sound such as an alarm. In this case, the watch module 8 is provided with a first contact 18 and a second contact 19, as shown in Figures 3 and 4.

[0029] 3 and 4, the first contactor 18 is a leaf spring, and one end thereof is electrically connected to a circuit section (not shown) in the watch module 8 at a location corresponding to the inside of the inner periphery of the press-on member 12. The other end of the first contactor 18 is located inside the inner periphery of the press-on member 12 and protrudes below the press-on member 12.

[0030] 3 and 4, the other end of first contactor 18 protrudes below presser member 12 through first opening 11c provided in buffer member 11 at a location corresponding to the inside of the inner periphery of presser member 12, and this protruding tip 18a is configured to come into contact with piezoelectric element 17 on back cover 7 shown in Fig. 6. In this way, piezoelectric element 17 is electrically connected to the circuit section (not shown) of watch module 8 by first contactor 18.

[0031] 3 and 4, the second contactor 19 is a leaf spring, similar to the first contactor 18, and one end thereof is electrically connected to a circuit section (not shown) of the watch module 8 at a location corresponding to the keep member 12. The other end of the second contactor 19 passes through the buffer member 11 and the keep member 12 and protrudes below the keep member 12.

[0032] 3 and 4, second contactor 19 is configured to protrude below press-on member 12 through second opening 11d provided in buffer member 11 at a location corresponding to press-on member 12 and through reinforcing notch 13b provided in support member 13. As a result, second contactor 19 is configured so that protruding tip 19a comes into contact with the inner surface of back cover 7 located on the outer periphery of piezoelectric element 17 shown in FIG. 6, thereby electrically connecting back cover 7 to a circuit section (not shown) as a ground.

[0033] Now, unlike the present invention, if we imagine a case in which resin sheet 14 is attached to back cover 7, depending on the position where resin sheet 14 is attached and the size of resin sheet 14, there is a risk that first contact 18 or second contact 19 will get caught on resin sheet 14 when back cover 7 is rotated and attached to watch case 1, causing the resin sheet 14 to peel off. However, because the resin sheet of the present invention is attached to the side of buffer member 11 fixed to watch module 8, first contact 18 or second contact 19 will not get caught on resin sheet 14 when back cover 7 is rotated and attached to watch case 1.

[0034] Next, a method for manufacturing the presser foot 12 in such a wristwatch will be described with reference to FIGS. The manufacturing method of this anti-slip member 12 includes a first step of providing a resin sheet 14 divided into multiple pieces on a protective sheet 20, providing an adhesive layer 16 on the exposed surface of the resin sheet 14, and attaching a release sheet 21 to it; a second step of peeling off the release sheet 21 and positioning the resin sheet 14 with the protective sheet 20, and in this state attaching the resin sheet 14 to the support member 13 with the adhesive layer 16; and a third step of peeling off the protective sheet 20, leaving the resin sheet 14 attached to the support member 13.

[0035] In this case, in the first step, support member 13 is formed in advance by stamping a metal plate such as stainless steel into a substantially circular ring shape using a press process. At this time, multiple protrusions 13a, multiple position restricting portions 15, and reinforcing cutout portion 13b are formed on support member 13 using the press process. In this case, multiple protrusions 13a are formed along the circumference of support member 13, multiple position restricting portions 15 are formed at locations facing the 1 o'clock and 7 o'clock sides of support member 13 so as to protrude toward the side opposite multiple protrusions 13a, and reinforcing cutout portion 13b is formed on the 12 o'clock side of support member 13.

[0036] This forms a support member 13 provided with a plurality of protrusions 13a, a plurality of position regulating portions 15, and reinforcing notches 13b. In the first step, as shown in Fig. 7, an adhesive layer 16 is provided on a resin sheet 14 that has been divided into a plurality of pieces, and these are sandwiched between a protective sheet 20 and a release sheet 21 to form a resin sheet body 22.

[0037] That is, when forming this resin sheet body 22, first, the resin sheet 14 is divided into a plurality of pieces, excluding the portions corresponding to the plurality of position restriction portions 15 and the reinforcing notches 13b of the support member 13. These divided resin sheets 14 are provided on the protective sheet 20 in a state where they are arranged in correspondence with the circumference of the support member 13.

[0038] Then, adhesive layers 16 are provided on the resin sheet 14 divided into multiple pieces, and release sheets 21 formed in the same ring shape as the support member 13 are attached to these adhesive layers 16. This forms a resin sheet body 22. Therefore, even though the resin sheet 14 is divided into multiple pieces, it does not fall apart due to the protective sheet 20, and the pieces are arranged on the protective sheet 20 in a state corresponding to predetermined positions on the support member 13.

[0039] Furthermore, even if the resin sheet 14 is divided into a plurality of pieces, or even if the adhesive layer 16 is provided on each of the divided resin sheets 14, the resin sheet 14 and the adhesive layer 16 are sandwiched between the protective sheet 20 and the release sheet 21, making it easy to store, transport, and otherwise handle the resin sheet 22.

[0040] In the second step, as shown in Fig. 8(b), the support member 13 is positioned and attached to a positioning jig 23. In this case, as shown in Fig. 8(a), the positioning jig 23 includes a jig main body 23a, and the upper surface of this jig main body 23a is provided with a plurality of positioning grooves 23b into which a plurality of position regulating portions 15 provided on the support member 13 are inserted. In addition, a large-diameter positioning pin 23c and a small-diameter positioning pin 23d are provided on the upper surface of this jig main body 23a at locations corresponding to the inside of the inner periphery of the support member 13.

[0041] 8(b), when positioning the support member 13 on the positioning jig 23, the multiple position restricting portions 15 of the support member 13 are inserted into the multiple positioning grooves 23b of the positioning jig 23. As a result, the support member 13 is positioned and placed at a predetermined position on the positioning jig 23. In this state, with the two positioning pins 23c, 23d of the positioning jig 23 positioned inside the inner periphery of the support member 13, the multiple protrusions 13a of the support member 13 protrude and are exposed on the side opposite the positioning jig 23, and the reinforcing notches 13b of the support member 13 are placed at the predetermined position on the positioning jig 23.

[0042] 8(c), the release sheet 21 of the resin sheet body 22 is peeled off from the adhesive layer 16, and the resin sheet 14 is positioned with respect to the positioning jig 23 by the protective sheet 20 and attached to the support member 13. In this case, the protective sheet 20 is provided with large-diameter pin insertion holes 20a into which the large-diameter positioning pins 23c of the positioning jig 23 are inserted, and small-diameter pin insertion holes 20b into which the small-diameter positioning pins 23d are inserted.

[0043] 8(c), when the resin sheet 14 is attached to the support member 13, the large-diameter positioning pin 23c of the positioning jig 23 is inserted into the large-diameter pin insertion hole 20a of the protective sheet 20, and the small-diameter positioning pin 23d of the positioning jig 23 is inserted into the small-diameter pin insertion hole 20b of the protective sheet 20. In this case, the two different-sized positioning pins 23c, 23d of the positioning jig 23 and the two different-sized pin insertion holes 20a, 20b of the protective sheet 20 prevent reverse insertion, and the protective sheet 20 is accurately positioned in the positioning jig 23.

[0044] Therefore, even if resin sheet 14 is divided into multiple pieces, by providing these multiple pieces of resin sheet 14 on protective sheet 20, the multiple pieces of resin sheet 14 are arranged to accurately correspond to predetermined positions on support member 13. In other words, the multiple pieces of resin sheet 14 are arranged on support member 13, covering the multiple protrusions 13a of support member 13, except for the positions corresponding to the multiple position regulating portions 15 and reinforcing cutout portions 13b of support member 13. In this way, the multiple pieces of resin sheet 14 are attached to the predetermined positions of support member 13 by adhesive layer 16.

[0045] 8(d), in the third step, the protective sheet 20 is peeled off from the divided resin sheet 14. This leaves the divided resin sheet 14 attached to the predetermined positions of the support member 13. That is, the divided resin sheet 14 is accurately and reliably attached to the predetermined positions of the support member 13 by the adhesive layer 16, covering the plurality of protrusions 13a of the support member 13, except for the portions corresponding to the plurality of position restriction portions 15 and reinforcing cutout portions 13b of the support member 13.

[0046] Next, the assembly of such a wristwatch will be described. In this case, the crystal 6 is first fitted together with the packing 6a into the upper opening of the case body 2 of the wristwatch case 1. In this state, the first exterior members 3a, which are side bezels, are placed on the 3 o'clock and 9 o'clock sides of the case body 2, and the second exterior member 3b, which is a top bezel, is placed on the top of the first exterior members 3a and the top of the case body 2.

[0047] Then, the third exterior member 3c, which is a band mounting bezel, is placed on the band mounting protrusions 2a of the case main body 2 and attached with multiple screw members 3d. As a result, the second exterior member 3b is fixed to the top of the case main body 2 by the third exterior member 3c, and the first exterior member 3a is fixed to the side of the case main body 2 by this second exterior member 3b. In this way, the wristwatch case 1 is assembled.

[0048] In this state, switch buttons 5 are attached to the 2 o'clock, 4 o'clock, 8 o'clock, and 10 o'clock sides of the watch case 1. After this, the watch module 8 is assembled together with the inner frame 9 inside the watch case 1. Then, a buffer member 11 is placed below the watch module 8, and a slide stopper member 12 is placed on the underside of this buffer member 11.

[0049] At this time, the multiple elastic protrusions 11a of the buffer member 11 are positioned in positions corresponding to the multiple protrusions 13a of the support member 13, and in this state the multiple position restriction portions 15 of the support member 13 are inserted into the housing 10 through the multiple buffer cutout portions 11b of the buffer member 11. In this way, the two-layered slide stop member 12, in which the support member 13 and the resin sheet 14 are laminated, is attached to the watch module 8, and the buffer member 11 is elastically pressed against the housing 10 of the watch module 8 by the support member 13.

[0050] In this case, the non-slip member 12 has a two-layer structure in which the resin sheet 14 is attached to the support member 13 to form an integrated structure, so there is no need to assemble the support member 13 and the resin sheet 14 separately to the watch module 8, and the support member 13 and the resin sheet 14 can be assembled to the watch module 8 at once. This simplifies the assembly work of the support member 13 and the resin sheet 14, and simplifies the assembling work of the support member 13 and the resin sheet 14.

[0051] At this time, first contact 18 provided on the circuit section (not shown) of watch module 8 protrudes below non-slip member 12 through first opening 11b of buffer member 11. Similarly, second contact 19 provided on the circuit section of watch module 8 protrudes below non-slip member 12 through second opening 11d of buffer member 11 and reinforcing notch 13b of support member 13. In this state, back cover 7 is attached to the bottom of watch case 1, i.e., the bottom of case body 2.

[0052] At this time, piezoelectric element 17 is first provided in the center of the inner surface of back cover 7. In this state, when back cover 7 is attached to the lower part of case body 2 of wristwatch case 1, female threaded portion 7b on the inner surface of the one-step higher portion of back cover 7 is rotated and screwed into male threaded portion 2b on the outer periphery of the lower part of case body 2 of wristwatch case 1, and tightened. In this way, back cover 7 is attached to the lower part of case body 2 of wristwatch case 1.

[0053] In this way, when attaching back cover 7 to the lower part of case body 2 of wristwatch case 1, support member 13 of presser member 12 presses resin sheet 14 against the inner surface of back cover 7, so that the resin sheet 14 at locations corresponding to multiple protrusions 13a of support member 13 is pressed in a nearly point-contact manner against the inner surface of back cover 7, that is, the inner surface of back cover 7 located on the outer periphery of piezoelectric element 17. As a result, resin sheet 14, which has slippery properties and is pressed by support member 13, slides along the inner surface of back cover 7 in a nearly point-contact manner.

[0054] As a result, when the back cover 7 is screwed onto the watch case 1 while being rotated, the load caused by the frictional resistance of the resin sheet 14 against the back cover 7 as the back cover 7 rotates is reduced, so the slide stopper member 12 does not rotate as the back cover 7 rotates. As a result, the watch module 8 does not rotate within the watch case 1. As a result, the hands of the watch movement of the watch module 8 and the display unit of the watch module 8 do not become misaligned with the watch case 1, so the watch module 8 can be positioned accurately within the watch case 1, resulting in a product of high quality and commercial value.

[0055] Furthermore, when the back cover 7 is attached to the case body 2 of the wristwatch case 1 while rotating in this manner, the tip 18a of the first contactor 18 provided on the watch module 8 elastically contacts and slides against the piezoelectric element 17 of the back cover 7, and the tip 19a of the second contactor 19 elastically contacts and slides against the inner surface of the back cover 7 located on the outer periphery of the piezoelectric element 17, so that the watch module 8 does not rotate within the wristwatch case 1.

[0056] For this reason, even if tip 18a of first contactor 18 slides in elastic contact with piezoelectric element 17 as back cover 7 rotates, it maintains an electrical connection between piezoelectric element 17 and the circuit section (not shown) of watch module 8. Also, even if tip 19a of second contactor 19 slides in elastic contact with the inner surface of back cover 7 as back cover 7 rotates, it maintains an electrical connection between back cover 7 and the circuit section of watch module 8.

[0057] When the back cover 7 is attached to the case body 2 of the watch case 1 in this way, the support member 13 reliably and effectively presses the buffer member 11 against the housing 10 of the watch module 8. As a result, the elasticity of the buffer member 11 presses the watch module 8 into the watch case 1 without any rattle, and the elasticity of the buffer member 11 also effectively presses the resin sheet 14 against the inner surface of the back cover 7.

[0058] In this way, the anti-slip member 12 of this wristwatch is equipped with a support member 13 that is arranged on the watch module 8, which is the first member having the display unit, and has multiple protrusions 13a that protrude toward the opposite side of the watch module 8, and a slippery resin sheet 14 that is attached to the support member 13, covering the multiple protrusions 13a, and is pressed against the back cover 7, which is the second member that is arranged so that the areas corresponding to the multiple protrusions 13a are rotatable relative to the watch module 8.This makes it possible to prevent misalignment of the display, such as the time display on the watch module 8, while also simplifying the assembly work and enabling the addition of additional functions.

[0059] That is, with this non-slip member 12, when resin sheet 14 is pressed against the inner surface of back cover 7 by support member 13, the resin sheet 14 can be pressed in approximately point contact against the inner surface of back cover 7 at locations that correspond to the multiple protrusions 13a of support member 13. Therefore, with this non-slip member 12, when back cover 7 is attached to watch case 1 by screwing it while rotating, resin sheet 14, which is pressed in approximately point contact against the inner surface of back cover 7, slides smoothly along the inner surface of back cover 7, thereby reducing the load caused by the frictional resistance of resin sheet 14 against back cover 7 as it rotates.

[0060] As a result, with this sliding member 12, sliding member 12 does not rotate in conjunction with the rotation of back cover 7, and so time module 8 does not rotate within watch case 1. As a result, the hands of the timepiece movement of time module 8 and the displays of time module 8 do not become misaligned with respect to watch case 1, so time module 8 can be positioned within watch case 1 with high precision, resulting in a product of high quality and commercial value.

[0061] Furthermore, because this presser member 12 has a two-layer structure in which the resin sheet 14 is attached to the support member 13 and integrated with it, there is no need to assemble the support member 13 and the resin sheet 14 separately to the watch module 8, and the support member 13 and the resin sheet 14 can be assembled to the watch module 8 at once. Therefore, with this presser member 12, the assembly work of the support member 13 and the resin sheet 14 is simplified, and the assembly work of the support member 13 and the resin sheet 14 can be simplified.

[0062] Furthermore, with this presser member 12, the resin sheet 14 is not provided on the inside surface of the back cover 7, thereby reducing the constraints on the back cover 7 caused by the resin sheet 14. As a result, with this presser member 12, a piezoelectric element 17 can be provided on the back cover 7 to add the function of emitting a warning sound such as an alarm, thereby achieving multi-functionality.

[0063] In this case, in this non-slip member 12, the support member 13 is formed from a highly rigid metal and the resin sheet 14 is formed from a highly slippery fluororesin, so that the support member 13, which is formed from a highly rigid metal, can reliably and effectively press the resin sheet 14 against the inner surface of the back cover 7.

[0064] Furthermore, with this presser member 12, even when resin sheet 14 is pressed against the inside surface of back cover 7, because resin sheet 14 is made of a highly slippery fluororesin, the load caused by the frictional resistance of resin sheet 14 against the inside surface of back cover 7 can be significantly reduced when back cover 7 is screwed onto watch case 1 while being rotated. This allows resin sheet 14 to slide smoothly and satisfactorily on the inside surface of back cover 7, reliably preventing presser member 12 from rotating as back cover 7 rotates.

[0065] Furthermore, in this press-on member 12, the support member 13 is formed in a ring shape with multiple protrusions 13a provided along the circumference, so that the resin sheet 14 at locations corresponding to the multiple protrusions 13a of the support member 13 can be reliably and satisfactorily pressed against the inner surface of the back cover 7 in a state of nearly point contact by the support member 13, thereby reliably reducing the load caused by the frictional resistance of the resin sheet 14 against the inner surface of the back cover 7.

[0066] Furthermore, in this anti-slip member 12, since the resin sheet 14 is divided into multiple pieces, the resin sheet 14 can be provided only in the necessary locations on the support member 13, and multiple position control portions 15 and reinforcing cutout portions 13b into which the second contactors 19 are inserted can be provided in good condition at the locations of the support member 13 located between the multiple divided resin sheets 14.

[0067] Furthermore, in this anti-slip member 12, the support member 13 is provided with a plurality of position regulating portions 15 that regulate the position relative to the watch module 8, and these plurality of position regulating portions 15 reliably prevent rotation of the support member 13 in the planar direction relative to the watch module 8 and radial positional deviation in the planar direction, thereby enabling the support member 13 to be accurately and reliably positioned relative to the watch module 8.

[0068] Furthermore, with this presser member 12, because the buffer member 11 is disposed between the support member 13 and the watch module 8, when the support member 13 is pressed against the watch module 8 by the back cover 7 via the resin sheet 14, the support member 13 can reliably and effectively press the buffer member 11 against the housing 10 of the watch module 8. As a result, the elasticity of the buffer member 11 can press the watch module 8 into the watch case 1 without rattle, and the elasticity of the buffer member 11 can also effectively press the resin sheet 14 against the inner surface of the back cover 7.

[0069] Furthermore, this method of manufacturing the anti-slip member 12 includes a first step of providing the resin sheet 14 divided into multiple pieces on the protective sheet 20, providing an adhesive layer 16 on the exposed surface of the resin sheet 14, and attaching the release sheet 21; a second step of peeling off the release sheet 21 and positioning the resin sheet 14 with the protective sheet 20, and attaching the resin sheet 14 to the support member 13 in this state with the adhesive layer 16; and a third step of peeling off the protective sheet 20, leaving the resin sheet 14 attached to the support member 13. As a result, the resin sheet 14 divided into multiple pieces can be accurately attached to the support member 13, and the anti-slip member 12 can be manufactured easily and satisfactorily.

[0070] That is, in the manufacturing method of this anti-slip member 12, in the first step, the resin sheet 14 is divided into multiple pieces so as to exclude the portions corresponding to the multiple position regulating portions 15 and reinforcing cutout portions 13b of the support member 13, and these divided resin sheets 14 are provided on the protective sheet 20 so as to be arranged along the circumference of the support member 13.By this, even though the resin sheet 14 is divided into multiple pieces, it does not fall apart due to the protective sheet 20, and the multiple divided resin sheets 14 can be arranged in a state corresponding to predetermined positions on the support member 13.

[0071] In this case, in the first step of the manufacturing method of this anti-slip member 12, multiple divided resin sheets 14 are provided on a protective sheet 20, an adhesive layer 16 is provided on each exposed surface of these multiple resin sheets 14, and a release sheet 21 formed in the same ring shape as the support member 13 is attached to these adhesive layers 16 to form a resin sheet body 22.Therefore, even if the resin sheet 14 is divided into multiple pieces or even if adhesive layers 16 are provided on each of the multiple divided resin sheets 14, the resin sheet body 22 can be easily handled, such as for storage and transportation.

[0072] Furthermore, in the second step of the manufacturing method of this anti-slip member 12, the support member 13 is positioned on the positioning jig 23, and in this state the resin sheet 14 from which the release sheet 21 has been peeled off is positioned on the positioning jig 23 using the protective sheet 20, and the resin sheet 14 is attached to the support member 13 using the adhesive layer 16. Thus, even if the resin sheet 14 is divided into multiple pieces, these divided resin sheets 14 can be attached to the support member 13 accurately and well at once using the protective sheet 20, thereby improving the workability of attaching the resin sheet 14 to the support member 13.

[0073] That is, in this second step, when attaching the support member 13 to the positioning jig 23, the multiple position regulating portions 15 of the support member 13 are inserted into the multiple positioning grooves 23b of the positioning jig 23, so that the support member 13 can be accurately and reliably positioned at a predetermined position on the positioning jig 23 with the multiple protrusions 13a of the support member 13 exposed on the opposite side of the positioning jig 23.

[0074] Furthermore, in this second step, when attaching the resin sheet 14 to the support member 13, the resin sheet 14 from which the release sheet 21 has been peeled off can be accurately positioned in the positioning jig 23 by the protective sheet 20. That is, in this second step, the large-diameter positioning pins 23c of the positioning jig 23 are inserted into the large-diameter pin insertion holes 20a of the protective sheet 20, and the small-diameter positioning pins 23d of the positioning jig 23 are inserted into the small-diameter pin insertion holes 20b of the protective sheet 20, thereby allowing the protective sheet 20 to be accurately and satisfactorily positioned in the positioning jig 23.

[0075] In this case, in this second step, reverse insertion can be prevented by the two different sized positioning pins 23c, 23d of the positioning jig 23 and the two different sized pin insertion holes 20a, 20b of the protective sheet 20, so that the protective sheet 20 can be accurately and satisfactorily positioned in the positioning jig 23. Therefore, in this second step, even if the resin sheet 14 is divided into multiple pieces, these multiple divided resin sheets 14 can be accurately and reliably positioned and arranged in predetermined positions on the support member 13 by the protective sheet 20.

[0076] That is, in this second step, the resin sheet 14 divided into multiple pieces is provided on the protective sheet 20 so as to cover the multiple protrusions 13a of the support member 13 except for the areas corresponding to the multiple position regulating portions 15 and reinforcing cutout portions 13b of the support member 13, so that the resin sheet 14 divided into multiple pieces can be accurately positioned by the protective sheet 20 and accurately and reliably attached to the predetermined positions of the support member 13 by the adhesive layer 16.

[0077] Furthermore, in a wristwatch equipped with this anti-slip member 12, the watch module 8 is equipped with a second contact 19 that contacts the inner surface of the back cover 7, and this second contact 19 contacts the inner surface of the back cover 7 through a reinforcing notch 13b, which is an opening provided in the anti-slip member 12, thereby enabling a reliable and good electrical connection between the circuit section (not shown) of the watch module 8 and the back cover 7 as ground.

[0078] In this case, in this wristwatch, piezoelectric element 17 is provided in the center of the inside surface of case back 7, and resin sheet 14 of slide member 12 is pressed against the inside surface of case back 7 at a location on the outer periphery of piezoelectric element 17, so that piezoelectric element 17 can be provided on the inside surface of case back 7 to add the function of emitting warning sounds such as an alarm. This not only enables the watch to be multifunctional, but also reduces the load caused by the frictional resistance of resin sheet 14 as case back 7 rotates, because resin sheet 14 can be pressed against the inside surface of case back 7 at a location on the outer periphery of piezoelectric element 17.

[0079] As a result, in this wristwatch, the sliding member 12 does not rotate when the back cover 7 is rotated, so the watch module 8 does not rotate within the watch case 1, and the hands of the watch movement of the watch module 8 and the displays of the watch module 8 do not become misaligned with respect to the watch case 1. This allows the watch module 8 to be positioned within the watch case 1 with high precision, resulting in a high-quality product with great commercial value.

[0080] In the above-described embodiment, the invention is described as being applied to a wristwatch, but it does not necessarily have to be a wristwatch, and can be applied to various types of clocks, such as travel watches, alarm clocks, table clocks, wall clocks, etc. Furthermore, the invention does not necessarily have to be a clock, and can be widely applied to electronic devices such as mobile phones and personal digital assistants.

[0081] Although one embodiment of the present invention has been described above, the present invention is not limited to this and includes the inventions set forth in the claims and their equivalents. The inventions described in the claims of this application are as follows:

[0082] (Addendum) The invention described in claim 1 is a press-on member characterized by comprising: a support member that is placed on a first member having an electronic component and supports the electronic component; and a resin sheet having slip properties that is attached to the support member and pressed against a second member that is placed rotatably relative to the first member.

[0083] The invention described in claim 2 is the anti-slip member described in claim 1, characterized in that the support member has a plurality of protrusions protruding from the first member, the resin sheet is attached to cover the plurality of protrusions, and the portions corresponding to the plurality of protrusions have a slipperiness that allows them to be pressed against a second member that is arranged rotatably relative to the first member.

[0084] A third aspect of the present invention provides the presser member according to the first or second aspect, wherein the support member is made of metal.

[0085] The invention of claim 4 is the presser member of any one of claims 1 to 3, characterized in that the resin sheet is made of a fluororesin.

[0086] The invention described in claim 5 is a presser element according to any one of claims 1 to 4, characterized in that the support member is formed in a ring shape and the multiple protrusions are arranged along the circumference.

[0087] A sixth aspect of the present invention provides the presser member according to any one of the first to fifth aspects, wherein the resin sheet is divided into a plurality of pieces.

[0088] The invention described in claim 7 is a presser member according to any one of claims 1 to 6, characterized in that the support member is provided with a plurality of position regulating portions that regulate the position relative to the first member.

[0089] The invention described in claim 8 is a presser member according to any one of claims 1 to 7, characterized in that a buffer member is disposed between the support member and the first member.

[0090] The invention described in claim 9 is a method for manufacturing a press-on member, comprising: a first step of providing a resin sheet divided into multiple pieces on a protective sheet, providing an adhesive layer on the exposed surface of the resin sheet, and attaching a release sheet to the resin sheet; a second step of peeling off the release sheet and positioning the resin sheet with the protective sheet, and attaching the resin sheet to a support member in this state with the adhesive layer; and a third step of peeling off the protective sheet, leaving the resin sheet attached to the support member.

[0091] The invention of claim 10 is the method for manufacturing a slip prevention member of claim 9, wherein in the second step, the support member is positioned on a positioning jig, the resin sheet from which the release sheet has been peeled off is positioned on the positioning jig using the protective sheet, and the resin sheet is attached to the support member by the adhesive layer.

[0092] The invention described in claim 11 is a timepiece characterized by including a presser member according to any one of claims 1 to 8.

[0093] The invention described in claim 12 is a watch described in claim 11, characterized in that the first member is a watch module placed inside the watch case, the second member is a back cover that rotates and screws onto the bottom of the watch case, and the sliding member is a watch in which the support member is placed below the watch module and the resin sheet at locations corresponding to the multiple protrusions of the support member is pressed against the inner surface of the back cover.

[0094] The invention described in claim 13 is a watch described in claim 12, characterized in that the watch module is provided with a contactor that contacts the inner surface of the back cover, and the contactor contacts the inner surface of the back cover through an opening provided in the slide member.

[0095] The invention described in claim 14 is a watch as described in claim 12 or claim 13, characterized in that a piezoelectric element is provided in the center of the inner surface of the back cover, and the resin sheet of the slide member is pressed against the inner surface of the back cover at a location located on the outer periphery of the piezoelectric element. [Explanation of symbols]

[0096] 1 watch case 2 Case body 2a Band mounting protrusion 2b Male thread 7 Back cover 7a Waterproof ring 7b Female thread 8 Clock Module 9 Middle Frame 10. Housing 11. Cushioning material 11a Elastic protrusion 11b Buffer cutout 11c 1st opening 11d 2nd opening 12. Slip-preventing member 13 Support member 13a protrusion 13b Reinforcement notch 14 Resin sheet 15 Position regulation part 16 Adhesive layer 17 Piezoelectric element 18 First contact 19 Second contact 20 Protective Sheet 20a, 20b Pin insertion holes 21 Peel-off sheet 22 Resin sheet body 23 Positioning jig 23a Jig body 23b Positioning groove 23c, 23d Locating pins

Claims

1. A support member disposed on a first member having a contact electrically connected to a circuit portion; a resin sheet having slipperiness that is attached to the support member and pressed against a second member that is arranged rotatably relative to the first member, The resin sheet is provided at a position where it does not come into contact with the contacts. A presser foot member characterized by:

2. The presser member according to claim 1, the support member has a plurality of protrusions protruding toward a side opposite to the first member, The resin sheet is attached to cover the plurality of protrusions, and has a sliding property such that portions corresponding to the plurality of protrusions are pressed against the second member that is arranged rotatably with respect to the first member. A non-slip member characterized by:

3. The presser member according to claim 1 or 2, The support member is made of metal. A presser foot member characterized by:

4. The presser member according to any one of claims 1 to 3, The resin sheet is made of a fluororesin. A presser foot member characterized by:

5. The presser member according to claim 2, The support member is formed in a ring shape, and the plurality of protrusions are provided along the circumference. A presser foot member characterized by:

6. The presser member according to any one of claims 1 to 5, The resin sheet is divided into a plurality of pieces and attached to the support member at positions other than the cutout portions formed on the support member. A presser foot member characterized by:

7. The presser member according to any one of claims 1 to 6, The support member has a plurality of position restricting portions that restrict the position of the support member relative to the first member. A presser foot member characterized by:

8. The presser member according to any one of claims 1 to 7, A buffer member is disposed between the support member and the first member. A presser foot member characterized by:

9. In the anti-slip member according to claim 8, The contacts are leaf springs and include a first contact and a second contact. A presser foot member characterized by:

10. In the anti-skid member according to claim 9, The first contactor has one end electrically connected to a circuit section in the first member at a location corresponding to the inside of the inner periphery of the support member, and the other end located inside the inner periphery of the support member and protruding below the support member. A presser foot member characterized by:

11. In the anti-skid member according to claim 9, The second contactor has one end electrically connected to a circuit portion of the first member at a location corresponding to the support member, and the other end protruding below the support member through the buffer member and the support member. A presser foot member characterized by:

12. In the anti-skid member according to claim 9, a piezoelectric element is provided in the center of the second member; The first contactor has a second end that protrudes downward from the support member through a first opening provided in the buffer member at a position corresponding to the inside of the inner periphery of the support member, and the protruding tip is configured to come into contact with the piezoelectric element. A presser foot member characterized by:

13. In the anti-skid member according to claim 9, a piezoelectric element is provided in the center of the second member; The second contactor protrudes below the support member through a second opening provided in the buffer member at a location corresponding to the support member and a reinforcing notch provided in the support member, and the protruding tip portion is configured to come into contact with the inner surface of the back cover located on the outer periphery of the piezoelectric element. A presser foot member characterized by:

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