Slide pressing member, method for manufacturing the same, 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 member for use in electronic devices such as wristwatches, a manufacturing method thereof, 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 wristwatch case, thereby preventing the watch module inside the wristwatch case from rotating as the back cover is rotated when the back cover is attached to the wristwatch 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 inner surface 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 of the pressure plate slide along 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 watches, since the sliding member is provided on the inside of the back cover, the back cover is restricted by the sliding member, which makes it difficult to add additional functions such as a piezoelectric element to the back cover.

[0006] The problem to be solved by the present invention is to provide a presser member that prevents misalignment of a display and allows for the addition of additional functions, a manufacturing method thereof, and a timepiece equipped with the presser member and the method. [Means for solving the problem]

[0007] The present invention provides 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 slipperiness that is attached to the support member and pressed against a second member that is placed rotatably relative to the first member. Effect of the Invention

[0008] According to this invention, it is possible to prevent the display from shifting in position and to add functions. [Brief description 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. [Diagram 2] 2 is an enlarged cross-sectional view of the wristwatch shown in FIG. 1 taken along the line AA. [Diagram 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 cushioning member, the anti-skid member, and the back cover. FIG. [Diagram 5] 5 is an exploded enlarged perspective view of a presser member disposed below the cushioning member shown in FIG. 4. [Figure 6] 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 manufacturing method of the anti-slip member shown in FIG. 4, in which (a) is a perspective view showing a positioning jig, (b) is a perspective view showing a state in which a support member is positioned on the positioning jig, (c) is a perspective view showing a state in which a protective sheet is positioned on the positioning jig and a resin sheet is attached to the support member, and (d) is a perspective view showing the anti-slip 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 PREFERRED EMBODIMENTS

[0010] BEST MODE FOR CARRYING OUT THE DISCLOSURE Hereinafter, one embodiment of a wristwatch to which the present invention is applied will 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 main body 2 and an exterior member 3. The case main body 2 is made of a metal such as stainless steel or a 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 3 o'clock and 9 o'clock sides of the case main body 2, covering them. The second exterior member 3b is a top bezel made of metal or synthetic resin and is disposed on the upper parts of the case main body 2 and the first exterior member 3a, covering them.

[0012] 1 to 3, the third exterior member 3c is a band mounting bezel, which is made of metal or synthetic resin, and is disposed on the upper part of the band mounting protrusion 2a of the case body 2. This 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, the wristwatch case 1 is configured such that, 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 the third exterior member 3c, and the first exterior member 3a is fixed to the side of the case main body 2 by the second exterior member 3b, as shown in Figures 1 to 3.

[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 of the case main body 2 and a third exterior member 3c which is a band attachment bezel. In addition, 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] 1 and 2, a watch crystal 6 is attached via a packing 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 substantially circular plate shape from a conductive metal such as titanium alloy (6-4Ti alloy) or stainless steel.

[0016] 2 and 6, the outer periphery of the inside surface of back cover 7 is formed higher, and a female thread 7b is provided on the inner periphery of the higher step of back cover 7. As a result, back cover 7 is attached to case body 2 of wristwatch case 1 by female thread 7b rotating and screwing into male thread 2b provided on the outer periphery of the lower part 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 the clock function, 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 a circuit unit that drives and controls these.

[0018] As shown in Figures 2 to 5, anti-slip member 12 is disposed on the underside of this watch module 8, i.e., the underside of housing 10, with buffer member 11 between them. Anti-slip member 12 has a two-layer structure in which support member 13 and resin sheet 14 are laminated together. 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, multiple protrusions 13a are provided along the circumference of support member 13. These multiple protrusions 13a are formed by pressing support member 13 so that they each protrude downward on the opposite side to watch module 8. Additionally, support member 13 is provided with multiple position restricting portions 15 that restrict its position relative to watch module 8, protruding toward the opposite side to the multiple protrusions 13a (upper side in Fig. 5), in other words, the watch module 8 side.

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

[0021] 3 to 5, the buffer member 11 is made of an elastic material such as rubber and is formed into a circular plate shape having approximately the same size as the outer diameter of the support member 13. The buffer member 11 is provided with a plurality of elastic protrusions 11a corresponding to the plurality of protrusions 13a of the support member 13, and a plurality of buffer cutout portions 11b into which the plurality of position restriction portions 15 of the support member 13 are inserted. As a result, the buffer member 11 is configured so that its outer periphery is elastically pressed against the bottom surface of the housing 10 of the timepiece module 8 by the support member 13.

[0022] On the other hand, as shown in Figs. 3 to 5, the 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 have a friction coefficient lower than that of stainless steel, and more preferably, a friction coefficient lower than that of polyethylene terephthalate (PET). This resin sheet 14 is divided into multiple pieces, which are attached to the underside of the support member 13 by an adhesive layer 16 (see Fig. 7) so as to cover the multiple protrusions 13a. This resin sheet 14 is configured so that when the back cover 7 is attached to the bottom of the watch case 1, multiple points of the support member 13 corresponding to the multiple protrusions 13a are pressed against the inner surface of the back cover 7.

[0023] 3 to 5, the presser member 12 has a structure in which a slippery resin sheet 14 is attached to a highly rigid support member 13, and the support member 13 and the resin sheet 14 are integrated together. Therefore, the 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, thereby pressing the resin sheet 14 against the inner surface of the back cover 7.

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

[0025] For this reason, as shown in Figures 3 to 5, this anti-slip member 12 is configured 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 lower part of the watch case 1, the locations 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 elasticity of the buffer member 11 elastically presses the watch module 8 inside the watch case 1 without any rattling, and the elasticity of the buffer member 11 is also configured to press the resin sheet 14 against the inner surface of the back cover 7.

[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 a 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, one end of which 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 this first contactor 18 is located inside the inner periphery of the press-on member 12 and protrudes below the press-on member 12.

[0030] That is, as shown in Figures 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 of back cover 7 shown in Figure 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, like the first contactor 18, and one end of the second contactor 19 is electrically connected to a circuit section (not shown) of the watch module 8 at a location corresponding to the press-on member 12. The other end of the second contactor 19 passes through the buffer member 11 and the press-on member 12 and protrudes below the press-on member 12.

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

[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 and second contact 19 will get caught on resin sheet 14 when back cover 7 is rotated and attached to watch case 1, causing the risk of resin sheet 14 peeling 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 and 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 member 12 for 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, a metal plate such as stainless steel is punched into a substantially circular ring shape by press working to form support member 13. At this time, multiple protrusions 13a, multiple position restriction portions 15, and reinforcing cutout portion 13b are formed on support member 13 by press working. In this case, multiple protrusions 13a are formed along the circumference of support member 13, multiple position restriction portions 15 are formed at locations facing the 1 o'clock side and the 7 o'clock side of support member 13 so as to protrude toward the side opposite to multiple protrusions 13a, and reinforcing cutout portion 13b is formed on the 12 o'clock side of support member 13.

[0036] This forms the support member 13 having the plurality of protrusions 13a, the plurality of position regulating portions 15, and the reinforcing cutout portion 13b. In the first step, as shown in Fig. 7, the adhesive layer 16 is provided on the resin sheet 14 which has been divided into a plurality of portions, and the resin sheet body 22 is formed by sandwiching the resin sheet 14 between the protective sheet 20 and the release sheet 21.

[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 regulating portions 15 and the reinforcing cutout portions 13b of the support member 13. These plurality of divided resin sheets 14 are provided on the protective sheet 20 in a state in which 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 a plurality of pieces, and release sheets 21 formed in the same ring shape as the support member 13 are attached to the adhesive layers 16. This forms a resin sheet body 22. Therefore, even though the resin sheet 14 is divided into a plurality of pieces, it does not fall apart due to the protective sheet 20, and the resin sheets 14 are arranged on the protective sheet 20 in a state corresponding to predetermined positions of the support member 13.

[0039] In addition, even if the resin sheet 14 is divided into a plurality of pieces, and even if the adhesive layer 16 is provided on each of the plurality of divided resin sheets 14, the resin sheet 14 and the adhesive layer 16 are sandwiched between the protective sheet 20 and the peeling sheet 21, making it easy to handle the resin sheet 22, such as storing and transporting the resin sheet 22.

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

[0041] 8(b), the multiple position regulating portions 15 of the support member 13 are inserted into the multiple positioning grooves 23b of the positioning jig 23. This positions and places the support member 13 at a predetermined position in 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 cutout portions 13b of the support member 13 are placed at the predetermined positions in 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 a large-diameter pin insertion hole 20a into which the large-diameter positioning pin 23c of the positioning jig 23 is inserted, and a small-diameter pin insertion hole 20b into which the small-diameter positioning pin 23d is 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 a plurality of pieces, by providing resin sheet 14 divided into a plurality of pieces on protective sheet 20, resin sheet 14 divided into a plurality of pieces is arranged to accurately correspond to predetermined positions of support member 13. That is, resin sheet 14 divided into a plurality of pieces is arranged on support member 13, covering protrusions 13a of support member 13, except for positions corresponding to position regulating portions 15 and reinforcing cutout portions 13b of support member 13. As a result, resin sheet 14 divided into a plurality of pieces is attached to 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 multiple protrusions 13a of the support member 13, except for the positions corresponding to the multiple position regulating portions 15 and the 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, respectively, 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 protrusion 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 watch case 1. After this, watch module 8 is assembled together with inner frame 9 into watch case 1. Then, buffer member 11 is placed below watch module 8, and anti-slip member 12 is placed on the underside of buffer member 11.

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

[0050] In this case, since the non-slip member 12 has a two-layer structure formed by bonding the resin sheet 14 to the support member 13, 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 are assembled to the watch module 8 at one time. This simplifies the assembly work of the support member 13 and the resin sheet 14, and simplifies the assembly 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 cushioning 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 cushioning 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, a piezoelectric element 17 is provided in advance in the center of the inner surface of the back cover 7. When attaching the back cover 7 to the lower part of the case body 2 of the watch case 1 in this state, the female threaded portion 7b provided on the inner peripheral surface of the stepped portion of the back cover 7, is rotated and screwed into the male threaded portion 2b provided on the outer periphery of the lower part of the case body 2 of the watch case 1, and fastened. In this way, the back cover 7 is attached to the lower part of the case body 2 of the watch case 1.

[0053] In this way, when the back cover 7 is attached to the lower part of the case body 2 of the wristwatch case 1, the support members 13 of the non-slip member 12 press the resin sheet 14 against the inner surface of the back cover 7, so that the resin sheet 14 at the locations corresponding to the multiple protrusions 13a of the support member 13 is pressed in a substantially point-contact state against the inner surface of the back cover 7, that is, the inner surface of the back cover 7 located on the outer periphery of the piezoelectric element 17. For this reason, the slippery resin sheet 14 pressed by the support members 13 slides along the inner surface of the back cover 7 in a substantially point-contact state.

[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 caused by the rotation of the back cover 7 is reduced, so the anti-slip 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 high commercial value.

[0055] Furthermore, when the back cover 7 is rotated in this manner to be attached to the case body 2 of the watch case 1, the tip 18a of the first contact 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 contact 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 watch case 1.

[0056] For this reason, even if tip portion 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 portion 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 satisfactorily 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 rattling, and the elasticity of the buffer member 11 also presses the resin sheet 14 satisfactorily against the inner surface of the back cover 7.

[0058] In this way, the anti-slip member 12 of this wristwatch is provided with a support member 13 which is arranged on the watch module 8, which is a first member having a display unit, and has a plurality of protrusions 13a protruding toward the opposite side of the watch module 8, and a slippery resin sheet 14 which is attached to the support member 13, covering the plurality of protrusions 13a, and is pressed against the back cover 7, which is a second member which is arranged rotatably relative to the watch module 8, at the locations corresponding to the plurality of protrusions 13a. This makes it possible to prevent misalignment of the display, such as the time display of 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 the resin sheet 14 is pressed against the inner surface of the back cover 7 by the support member 13, the resin sheet 14 can be pressed against the inner surface of the back cover 7 at locations corresponding to the multiple protrusions 13a of the support member 13 in a state of approximately point contact. Therefore, with this non-slip member 12, when the back cover 7 is attached to the watch case 1 by screwing it while rotating it, the resin sheet 14 pressed against the inner surface of the back cover 7 in a state of approximately point contact slides smoothly along the inner surface of the back cover 7, thereby reducing the load caused by the frictional resistance of the resin sheet 14 against the back cover 7 as the back cover 7 rotates.

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

[0061] Furthermore, because this non-slip member 12 has a two-layer structure in which the resin sheet 14 is attached to the support member 13 and integrated therewith, 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 non-slip member 12, the assembly work between the support member 13 and the resin sheet 14 is simplified, and the assembly work between the support member 13 and the resin sheet 14 can be simplified.

[0062] Furthermore, in this presser member 12, the resin sheet 14 is not provided on the inner surface of the back cover 7, so the constraints on the back cover 7 caused by the resin sheet 14 can be alleviated. Therefore, in 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 anti-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 made of a highly rigid metal can reliably and satisfactorily press the resin sheet 14 against the inner surface of the back cover 7.

[0064] Furthermore, with this non-slip member 12, even if the resin sheet 14 is pressed against the inner surface of the back cover 7, because the resin sheet 14 is made of a fluororesin that has high slipperiness, the load caused by the frictional resistance of the resin sheet 14 against the inner surface of the back cover 7 can be significantly reduced when the back cover 7 is screwed onto the watch case 1 while being rotated. This allows the resin sheet 14 to slide smoothly and satisfactorily on the inner surface of the back cover 7, reliably preventing the non-slip member 12 from rotating as the 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 substantially point-contact state 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 necessary locations on the support member 13, and multiple position control portions 15 and reinforcing cutout portions 13b into which the second contacts 19 are inserted can be provided favorably in 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 position of the support member 13 to be accurately and reliably regulated relative to the watch module 8.

[0068] Furthermore, in 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 toward the watch module 8 by the back cover 7 via the resin sheet 14, the buffer member 11 can be reliably and satisfactorily pressed against the housing 10 of the watch module 8 by the support member 13. As a result, the elasticity of the buffer member 11 can press the watch module 8 into the wristwatch case 1 without rattling, and the elasticity of the buffer member 11 can also be used to satisfactorily press the resin sheet 14 against the inner surface of the back cover 7.

[0069] Furthermore, according to the manufacturing method of this anti-slip member 12, there is provided a first step of providing the 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 while 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 easily and satisfactorily manufactured.

[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 positional 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 of the support member 13.

[0071] In this case, in the first step of the manufacturing method of this anti-slip member 12, a resin sheet 14 divided into multiple pieces is provided on a protective sheet 20, an adhesive layer 16 is provided on each of the exposed surfaces 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 and 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 stored and transported.

[0072] Furthermore, in the second step in 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.By this, even if the resin sheet 14 is divided into multiple pieces, these divided resin sheets 14 can be accurately and satisfactorily attached to the support member 13 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 to the positioning jig 23.

[0074] In addition, 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 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, so that the protective sheet 20 can 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 be arranged to cover the multiple protrusions 13a of the support member 13 except for the locations corresponding to the multiple positional 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 to be made 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, a piezoelectric element 17 is provided in the center of the inner surface of the back cover 7, and the resin sheet 14 of the non-slip member 12 is pressed against the inner surface of the back cover 7 at a location on the outer periphery of the piezoelectric element 17, so that the piezoelectric element 17 can be provided on the inner surface of the back cover 7 to add the function of emitting a warning sound such as an alarm. This makes it possible to increase the number of functions, and even if more functions are added, the load caused by the frictional resistance of the resin sheet 14 as the back cover 7 rotates can be reduced, because the resin sheet 14 can be pressed against the inner surface of the back cover 7 at a location on the outer periphery of the piezoelectric element 17.

[0079] For this reason, in this wristwatch, the slide member 12 does not rotate with the rotation of the back cover 7, so the watch module 8 does not rotate within the wristwatch case 1, and the hands of the watch movement of the watch module 8 and the displays of the display unit of the watch module 8 do not become misaligned with respect to the wristwatch case 1. As a result, the watch module 8 can be positioned within the wristwatch case 1 with high precision, resulting in a high quality and commercial value product.

[0080] In the above embodiment, the present invention is described as being applied to a wristwatch, but it does not necessarily have to be a wristwatch, and it can be applied to various types of clocks, such as travel watches, alarm clocks, table clocks, wall clocks, etc. Also, the present invention does not necessarily have to be a clock, and it 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 embodiment, and includes the inventions described in the claims and their equivalents. The invention as set forth in the claims of this application is set forth below.

[0082] (Additional Note) The invention described in claim 1 is a press-on member characterized by comprising: a support member arranged on a first member having an electronic component and supporting the electronic component; and a resin sheet having slipperiness attached to the support member and pressed against a second member arranged 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 covering the plurality of protrusions, and the locations 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] The invention as recited in claim 3 is the presser member as recited in claim 1 or 2, characterized in that the support member is made of metal.

[0085] The invention as set forth in claim 4 is the pressure member as set forth in 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 member 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 provided along the circumference.

[0087] The invention as recited in claim 6 is the presser member as recited in any one of claims 1 to 5, characterized in that 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 has a plurality of position regulating portions that regulate the position of the support member relative to the first member.

[0089] The invention described in claim 8 is the presser member described in 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 an anti-slip 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 in this state to a support member 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 described in claim 10 is the method for manufacturing an anti-slip member described in claim 9, characterized in that in the second step, the support member is positioned in a positioning jig, and in this state, the resin sheet from which the release sheet has been peeled off is positioned in the positioning jig by 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 comprising 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 within the watch case, the second member is a back cover that rotates and screws onto the lower part of the watch case, and the anti-slip member is a support member that 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 according to 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 anti-slip 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 materials 11a Elastic protrusion 11b Buffer cutout 11c 1st opening 11d 2nd opening 12 Anti-slip 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 Release sheet 22 Resin sheet body 23 Positioning jig 23a Jig body 23b Positioning groove 23c, 23d Locating pin

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 slip-preventing member characterized by the above-mentioned.

2. The presser member according to claim 1, the support member has a plurality of projections projecting toward an opposite side to the first member, The resin sheet is attached to cover the plurality of protrusions, and has a slipperiness such that the 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 the above.

3. The presser member according to claim 1 or 2, The support member is made of metal. A slip-preventing member characterized by the above-mentioned.

4. In the presser member according to any one of claims 1 to 3, The resin sheet is made of a fluororesin. A slip-preventing member characterized by the above-mentioned.

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 slip-preventing member characterized by the above-mentioned.

6. In the presser member according to any one of claims 1 to 5, The resin sheet is divided into a plurality of pieces and is attached to the support member at positions other than the cutout portions. A slip-preventing member characterized by the above-mentioned.

7. In the presser member according to any one of claims 1 to 6, The support member includes a plurality of position restricting portions that restrict a position of the support member relative to the first member. A slip-preventing member characterized by the above-mentioned.

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 slip-preventing member characterized by the above-mentioned.

9. The anti-slip member according to claim 8, The contacts are leaf springs and include a first contact and a second contact. A slip-preventing member characterized by the above-mentioned.

10. In the anti-slip 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 slip-preventing member characterized by the above-mentioned.

11. In the anti-slip member according to claim 9, The second contactor has one end electrically connected to the circuit portion of the first member at a location corresponding to the support member, and the other end protrudes below the support member through the buffer member and the support member. A slip-preventing member characterized by the above-mentioned.

12. The anti-slip member according to claim 9, A piezoelectric element is provided at the center of the second member, The first contactor is configured such that the other end thereof protrudes below the support member through a first opening provided in a portion of the buffer member corresponding to the inside of the inner periphery of the support member, and the protruding tip portion comes into contact with the piezoelectric element. A slip-preventing member characterized by the above-mentioned.

13. The anti-slip member according to claim 9, A piezoelectric element is provided at the center of the second member, The second contactor is configured to protrude 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 contact the inner surface of the back cover located on the outer periphery side of the piezoelectric element. A slip-preventing member characterized by the above-mentioned.

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