JPH0731877Y2 - clock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to the structure of a timepiece vehicle.

[Conventional technology]

In the structure of a conventional timepiece wheel, as in Japanese Patent Laid-Open No. 62-161076, a gear portion and a pinion portion are separately formed and are integrated by fixing with a shimiro. Also, as in Japanese Examined Patent Publication No. Sho 61-48869, there is one in which the pinion, the gear and the shaft are integrally molded with resin. Further, there is also one in which a central hole, a base portion and a tooth portion raised from the base portion are integrally formed as in Japanese Patent Publication No. 61-55472.

[Problems to be solved by the invention]

However, in the structure like Japanese Patent Laid-Open No. 62-161076, the plate member is made into a doughnut-shaped press using the gear material as raw material, and then the raw material is ground by the gear part and the automatic machine where the outer peripheral tooth division is performed, and the tooth division is further performed. The kana part that has been subjected to is processed separately, and both are hammered in and fixed in place. Therefore, the machining time for the gear and pinion is 20 to 30 seconds each, and the assembly time is 1
It takes ~ 2 seconds.

Next, in the case of a structure such as Japanese Patent Publication No. Sho 61-48869, it is necessary to have the strength to withstand the slipping force of the center wheel & pinion, the strength to withstand the force of pushing in the needle and the needle, and the strength to withstand the set force. ,
It was necessary to make the module of gears and pinwheels of high strength material large and to increase the plate thickness of the gears. Further, the molding processing time also requires a dozen seconds. Therefore, the cost is high because a high material is used and the molding time is long, and the timepiece becomes thick and large in order to increase the strength.

Next, the watch wheel in Japanese Examined Patent Publication No. 61-55472 has a hole in the center, and 10 independent tooth profiles are built up integrally from the plate-shaped base around the hole, although it has the advantage that the machining time is short. There is. Therefore, each tooth profile increases from the strength of the mold,
Further, since a hole diameter equal to or larger than the plate thickness of the base is required to open the center hole, the gear integrally formed with the base becomes very large. Therefore, it is not suitable for speed-up or speed-reduction trains. Especially when it is used for the front train wheel, the central hole is large, and moreover, there is always a fractured portion due to the shearing process, resulting in a large torque loss in the bearing portion. Also, because each tooth is independent, there is a manufacturing constraint on the height of the kana, and the deviation of the height of each tooth causes a large runout of the gear part, which may cause it to run out of contact with other cars. There was a problem.

Therefore, the present invention solves such a problem, and an object thereof is to integrally form a timepiece wheel having a pinion portion, a gear portion, and a bearing portion with a metal material capable of obtaining desired strength, In particular, since the bearing surface is manufactured by compression or forging, a smooth finished surface can be obtained, so torque loss can be reduced, and by integrating each tooth profile, a sufficient height to mesh with other gears can be obtained. By being able to complete a timepiece vehicle, it is possible to satisfy the above-mentioned conditions (performance) of the vehicle that constitutes the deceleration or speed-up train wheel and to reduce the cost.

[Means for solving problems]

The timepiece of the present invention is a timepiece having a timepiece wheel, wherein the timepiece wheel is provided with a bearing portion that engages with a receiving member, a pinion portion, and a tooth profile provided on an outer periphery of the pinion portion at one axial end of the pinion portion. And a base portion having a plate shape that is formed, the bearing portion, the pinion portion, and the base portion are integrally formed from a thin plate metal material by compression or forging, and the tooth profile is formed by shearing. Characterize.

〔Example〕

FIG. 1 is a plan view showing an embodiment of the present invention, and FIGS. 2 to 5 are sectional views thereof. 6, 8 to 12 and 14 are sectional views showing another embodiment of the present invention.

In FIGS. 1 to 5, 1 is a base plate and 2 is a base plate 1.
It is a train wheel bridge arranged on the front side of. The center wheel & pinion 3 is rotatably supported by the burring portion 1a of the main plate and the abacus ball of the fourth wheel & pinion 4 stacked on it. Further, the fourth wheel & pinion 4 is supported by the burring portion 1a via the dowel 2a of the train wheel bridge and the second wheel & pinion 3. The agaki of the fourth wheel & pinion 4 and the second wheel & pinion 3 is determined by the portion of the upper surface of the main plate 1 and the wheel train bridge 2 that has been half-blanked (shearing is stopped halfway to form a protrusion). The fourth wheel & pinion 4 has a pinion portion 4b, a collar portion 4c and a shaft portion 4d which mesh with the third gear 5a.
And the recess 4e are formed by compression or forging (including the case of not heating), and the tooth profile of the gear 4a is sheared (press cutting)
The true 4f is fixed to the car processed by and is integrated. The third wheel & pinion 5 is composed of a pinion 5b formed by compression or forging, a brim portion 5c as a base, upper and lower bearing portions, an upper recess 5e and a lower 5d, and a gear 5a with a tooth profile stamped out. The handle 5d is supported by a hole in the main plate, and the upper handle is supported by a dowel 2b formed by drawing and plastic working or half blanking. The base plate 1 is provided with a bent portion 1c to prevent it from falling during assembly. The fifth wheel & pinion 6 is the same as the third wheel & pinion in terms of configuration, but the positions of the upper handle 6d and the lower handle recess 6c are different.
Further, the fifth wheel & pinion 6 has a hole in which the upper handle 6d is formed in the half blanking of the train wheel bridge 2 and a recess 6c which is the lower handle, which is supported by the shaft portion of the stator 7. The compression or forged parts above have a length of 0.4 m
m or more is required, the number of teeth is 8 or less, and the material is preferably a copper alloy, especially brass or aluminum. To reduce the thickness, the ratio T / L of the brim thickness T and the length L should be 1/2 or less. desirable. The brim thickness T is preferably 0.25 mm or less in order to press out a tooth profile having a relatively small modulus. The half-drawing of the 4th wheel 4 and the 5th wheel 6 provided on the train wheel bridge 2 makes it possible to reduce the contact resistance of the part that determines the agaki of the car and to adjust the akiki of the car that was conventionally done with stones etc. Has meaning. Further, the half-puller that receives the upper handle of the fifth wheel 6 also has a function of retaining oil. The rotor 8 is made of plastic and the lower handle is the base plate 1 in which the handle hole is provided in the half blanking as in the above-mentioned car, and the upper handle is the handle hole having the slope portion provided in the half blank of the train wheel bridge 2. Is supported by. The stator 7 is planarly positioned at the two burring portions 1b provided on the main plate, and the magnetic core 9
A coil block composed of a coil wire and a coil lead substrate 10 and an insulating plate 11 for terminating the coil wire is stacked thereon. The coil lead substrate 10 has a pattern formed on the magnetic core 9 side and has a hole for guiding the outer periphery of the IC chip 12,
A pattern facing the bump (Au) of the IC chip 12 is formed so as to project into the hole. The IC chip 12 is individually thrown into the hole of the coil lead substrate 10 during assembly and pressed by the IC chip pressing spring of the train wheel bridge 2, and the spring force establishes conduction between the IC chip 12 and the pattern. The spring force also serves to magnetically couple the stator 7 and the magnetic core 9. Reference numeral 13 is a crystal unit, which is planarly positioned by a hole formed in the main plate, and has an insulating plate 11, a crystal terminal 13b, a coil lead substrate 10 (pattern is a pattern) between the bent portion 1d and the terminal retainer spring 2c of the train wheel bridge. Formed on the ground plate side), and the pattern and crystal terminal 13
The continuity of b is taken by the spring force of the terminal pressing spring. The crystal unit 13 is pressed by the crystal pressing spring 2d.
The battery 14 is electrically connected to the cathode can by arranging the insulating plate 11 and the copper foil pattern 10a protruding from the outer shape of the coil lead substrate on the negative terminal spring 1e, and using the spring force of the negative terminal spring 1e. Further, conduction with the anode is performed by a plus terminal 2d integrated with the train wheel bridge.

The winding stem 15 is guided by the bent portions 1f and 1g of the main plate in three directions, that is, the front side and the plane direction of the main plate 1, and is guided to the back side by a projection formed by drawing or half blanking. This is the bending part 1
Since f and 1g are very close to the winding stem guide hole, the guide hole may be deformed when bending and the hole diameter accuracy may be difficult to obtain, so the purpose is to eliminate the effect.
The winding stem 15 has a step 15a and a pinion 15b.
The click spring 1h provided on the main plate is in contact with 15a.
The tip of the click spring 1h is bent up, and when the winding stem is removed, the tip of the click spring is pushed down by a tool so that the click spring 1h and the stepped portion 15a are disengaged and the winding stem 15 is removed. When you pull out the winding stem 15, click spring 1 on the slope of step 15a.
The position of the winding stem 15 is determined by pushing down h and engaging with the next step 15a. In this state, the kana portion 15b can be rotated by engaging with the upper teeth of the back wheel 16 of the day. In order to reliably pull out this winding stem, a part of the click spring 1h is cut to zero (the clearance after cutting the spring part and the main plate rigid body part is almost 0) and the winding stem 15
aThe zero-cut portion receives the force in the thrust direction so that the tip of the click spring 1h does not bend in the thrust direction of the winding stem 15. The day wheel & pinion 16 is composed of a gear 16a that meshes with the pinion of the center wheel & pinion 3, a pinion 16b, and an upper tooth 16c, and the processing is performed by press shearing all thin plate members. For example, as shown in FIGS. 7A and 7B, the pinion portion 16b and the upper teeth 16c (only one sheet is shown) are sheared to the middle of the plane and further bent to be manufactured. The gear 16a is toothed by shearing. Therefore, the mass productivity is high and the cost can be reduced. In addition, the back wheel 16 of the day has the base of the pinion portion 16b supported by the handle hole of the main plate 1, and the agaki is determined by the half blanked portion 9a of the magnetic core 9. Numeral 17 is an hour wheel and is arranged on the back side of the main plate 1, and the sprocket of the hour wheel is maintained by the protrusion 1i that is drawn or half-pressed.

Next, regarding the method of fixing the exterior parts and the movement, cut the diver part 1j (connection part between parts and ribbon-shaped main plate raw material) provided on the main plate 1 according to the inside shape of the case, and cut it The plane position of the case and the main plate 1 is determined, and the train wheel bridge 2
It is pressed against the back lid by a plurality of push-up springs 2f provided on the
The movement and the case are fixed by abutting against a part of the case through the dial. Therefore, there is an advantage that the middle frame can be abolished.

The height determining structure of the main plate 1 and the train wheel bridge 2 will be described. The base plate is provided with a bend 1k, and the protrusion 1 is formed at the bending tip by drawing or half blanking. In general, the tolerance of bending process varies widely, so it could not be used to determine the yard of the wheel. However, this variation can be absorbed by adjusting the height of the protrusion 1 according to the bending height. Further, the main plate 1 and the train wheel bridge 2 are fixed by the concave portion 1s and the train wheel bridge convex portion of the outer peripheral bending portion.
It is fixed at 2k, and positioning is performed by the outer circumference bending part and the outer shape of the train wheel bridge.

The thin base plate 1 described above is bent or drawn around the outer periphery except for the tie bar portion 1j in order to prevent warpage and enhance rigidity. In addition, a beat 1 m is formed by drawing or half-drawing in the vicinity of the portion where there is no bent or drawn portion on the outer periphery. The train wheel bridge 2 also has a beat 2j formed around the handle hole to enhance rigidity and prevent warping.

FIG. 6 is a sectional view showing another embodiment of the train wheel portion. Descriptions of parts that are common to the above-described embodiments will be omitted. 101 is the main plate, 1
Reference numeral 02 is an axle train receiver, 103 is a second wheel, 104 is a fourth wheel, 105 is a third wheel, 106 is a fifth wheel, and 107 is a rotor. The third wheel & pinion 105 has a pinion 105a formed by cutting and bending around the handle hole (processing to perform bending after zero cut), and a gear 105b having a tooth profile removed by a press on the outer peripheral portion thereof. The burial direction of the pinion 105a is on the outer peripheral side. The lower handle squeezes from the main plate 101 and the shaft portion 101a is half blanked or plastically worked to make it protrude, and the sag side of the pinion 105a is supported.
The shaft 102a, which has been subjected to the same processing as the base plate 101, is mounted on the shaft 2. Whether the fourth wheel 104 has been processed in the same way as the third wheel 105 104a
A true 104c is fixed to the gear 104b by white-screwing to form an integral structure. The burr of the pinion 104a extends to the center side so as not to affect the meshing of the third gear 105b. Processing of the fifth wheel & pinion 106 is the same as that of the third wheel & pinion 105, and therefore description thereof will be omitted. The rotor 107 is composed of a pinion 107a and a magnet 107c fixing portion 107b (plural), and is integrated with the magnet 107c. Further, the lower handle of the rotor 107 has a magnet hole and a dowel 101b for the main plate, and the upper handle has a dowel 102b for receiving a shaft.
It is supported by. Further, the number of each kana is preferably 8 or less in manufacturing. Further, the thickness of the material is preferably 0.2 mm or less for press working.

In FIG. 8, 1 is a main plate and 2 is a train wheel bridge. 3 consists of a second gear 3a and a second pinion 3b, and a second gear 3a and a second pinion
It is the second wheel with an arbitrary sliding torque between 3b.
4 is a 4th gear 4a and a 4th pinion 4b, and a recess 4c formed by compression or forging is formed integrally in the center with a metal material, and in the subsequent step, the 4th gear 4a is punched and a hole is formed. It is a number 4 wheel consisting of a numbered body and a number 4d 4d fixed in the center hole. The second wheel & pinion 3 includes the burring portion 1a of the main plate 1 and the abacus ball (2) of the fourth wheel & pinion 4 stacked on the burring portion 1a.
) Is rotatably supported. The fourth wheel & pinion 4 is supported by the burring portion 1a via the handle hole 2a of the train wheel bridge 2 and the second wheel & pinion 3. Agaki of the second wheel & pinion 3 and the fourth wheel & pinion 4 is determined by the main plate 1 and the train wheel bridge 2. Reference numeral 5 denotes a third wheel, which is integrally formed with a third pinion 5b which meshes with the second gear 3a and a third pinion 5a which meshes with the fourth pinion 4b, a lower handle 5c and an upper handle 5d. In the third wheel & pinion 5, the lower handle 5c is rotatably supported in the hole of the main plate 1 and the upper handle 5d is rotatably supported in the hole of the train wheel bridge 2. A fifth wheel & pinion 6 has a fifth gear 6a meshing with the pinion of the rotor 8, a fifth pinion 6b meshing with the fourth gear 4a, a lower handle 6c, and a recess 6b serving as the upper handle, which are integrally formed. The third wheel 5, the fourth wheel body, and the fifth wheel 6 are formed by compression or forging except for the gears of the gears, and the tooth profile of the gears is processed by punching. However, the center hole of the No. 4 vehicle body is processed by press punching with a diameter smaller than the diameter of the recess 4c formed by compression or forging. Therefore, since the finished surface of the handle portion cannot have a fractured surface as in the case of processing without a press, a smooth surface can be created, and a timepiece wheel with less torque loss can be manufactured.

FIG. 9 is a tooth profile of each wheel shown in FIGS. 2 and 8 of the present invention. In this tooth profile, each tooth (6 in the example) is not independent so that it can be easily compressed or forged, and whether the tooth thickness at the root portion is the same as the tooth thickness at the tip, Alternatively, it is preferable to set the tooth thickness of the tooth root portion large to improve the flow of material. Also, the tenth
As shown in the figure, attach the appropriate radius 5c to the connecting part of the gear base 5a and the pinion 5b, or the radius 5e to the tooth profile of the pinion 5e to the connecting part of the upper handle 5d and base 5a or the lower handle 5f and pinion 5b. The flowability of the material may be further improved by adding 5 g of radius. This also applies to other embodiments.

FIG. 11 is a cross-sectional view showing another structure of the timepiece wheel used in FIGS. 2 and 8. This will be described by taking the third wheel & pinion 5 as an example, and the manufacturing method is the same as that described above, and will be omitted. The third wheel & pinion 5 is a third wheel having a tooth profile formed on the base thereof.
5a, third pinion 5b, bearing lower part 5c and upper part 5d.The third pinion 5b has a draft taper θ, which is used to compress or forge and then remove the product from the die. It is provided to make it easier to pull out when removing, and the angle θ is
A tilt of 0.1 ° to 3 ° is preferred. Especially for the third pinion 5b having a pinion height n of 0.4 mm or more, the quality can be further stabilized by providing the draft taper θ. Further
5e is a body-attached portion and may be provided on the lower handle side as well, which can reduce the contact resistance of the receiver and the like.

In addition, the recesses 5e and 6c provided on the gear side in FIG. 2 are intended to make it easier for the handles 5d and 6d to be formed during compression or forging, and the depth thereof is preferably deeper than the flange thickness T.

Next, the concave portion 6d of the fifth wheel & pinion 6 shown in FIG. 8 also has the meaning of facilitating the lower handle 6c in the compression or forging process and facilitating the pushing of the material to the tip of the tooth (kana). Further, it is desirable that the depth s of the upper handle 6d be shorter than the height of the fifth pinion 6b, which is to increase the strength of the mold during compression or forging, thereby improving the mass productivity. Furthermore, it is desirable that the volume of the recess 6d be smaller than the volume of the lower handle 6c, so that the above-described quality can be easily ensured.

In FIG. 8, the sun-back wheel 16 includes a sun-back gear 16a, a sun-back pinion 16b, a lower handle 16c between the gear 16a and the pinion 16b, and an upper handle.
16d is integrally formed of a metal material. Although not shown, the back wheel 16b of the sun is always in mesh with the hour wheel, and the back wheel 16a of the day is always in mesh with the second wheel. Also, the height of the pinion 16b behind the sun is stopped halfway along the length of the pinion. This makes the lower handle 16
In addition to being able to configure c as a circle, it facilitates compression or forging of a car with a particularly long pinion length.

In Fig. 12, the end face of the pinion portion of the fifth wheel & pinion 6 has a flat portion 6h which is a part of the body, and the other is constituted by a circular arc 6i or a slope so that the contact resistance with the machine frame such as the main plate can be improved. Can be reduced.

It is also possible to configure by combining the above-described application examples, and thereby it is possible to improve manufacturing and quality.

FIG. 13 is a plan view showing a working process until the timepiece car is completed by plastic working, and as an example of the timepiece car,
This will be described using the third wheel & pinion 5 in FIG. Band material 30 in process 1
(Short length material is also acceptable) is inserted into the mold, and the pilot holes 31 and 32, which serve as reference holes for positioning in the subsequent process, are drilled. Next, in step 2, a part of the strip 30 (area larger than the gear 5a) is applied with a compressive load from the upper and lower surfaces to make the strip 30 thinner than the strip 30, thereby forming the brim 5c and thinning it. The pinion 5b and the lower handle 5d are formed by bulging most of the material of the part downward, and the desired tooth profile and lower handle shape are obtained (in the present invention, the process of step 2 is called compression or forging). Further, the lower handle 5d is formed by the upper handle recess 5e.
Makes it easier to raise. In addition, the surface of the recess 5e, the lower handle 5d, and the brace 5b can be made very smooth by improving the finishing surface of the mold, so that the torque loss in the handle and the tooth profile is very small. Can be created. Next, in step 3, the gear 5a is removed from the strip 30 by shearing to complete the third wheel & pinion. The above processing steps are the same for the other embodiments described above (except the fourth wheel).

FIG. 14 is a sectional view showing another embodiment of the train wheel portion. 7
Is a stator having a shaft portion 7c. 6 is a fifth wheel manufactured by the processing method described in FIG. However, it does not have an upper handle, and the recessed portion 6c serving as a lower handle is supported by the shaft portion 7c.
The wheel clearance of the fifth wheel & pinion 6 is determined by the train wheel bridge 2 and the stator 7. Further, although the stator 7 has been described as a member that supports the shaft portion 7c, it may be supported by another member such as a ground plate.

[Effect of device]

As described above, according to the present invention, in particular, a watch wheel having a gear and a pinion constituting a deceleration or speed-up gear train is integrally formed of a metal material satisfying a desired strength, and the processing time thereof is increased. The cost can be reduced because the width can be shortened (processing time is approximately 0.5 seconds because the entire process is plastic processing). In addition, since the bearing portion is compressed or forged, the finish of the engaging surfaces of the base plate and the bearing portion with the bearing portion is very smooth, so that torque loss in the bearing portion can be reduced. Further, by making the tooth profile of the kana into a tapered shape, or by forming a radius at the joining part of the kana and the gear part or the joining part of the handle and the gear part, by improving the flowability of the material in the compression or forging process, The height of the kana can be made high enough. Further, by forming a draft taper in a complicated planar flat portion, it is possible to improve releasability and also to improve stability in terms of quality.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, and FIGS.
The figure is its cross-sectional view, FIGS. 6 and 8 are cross-sectional views showing another embodiment of the train wheel portion, and FIGS. 7 (a) and 7 (b) are one of the back teeth and kana of the back wheel of the day. The perspective view shown in FIG. 9, FIG. 9 is a tooth profile of the kana of the embodiment of the present invention, and FIGS. 10 to 12 are sectional views of a timepiece wheel showing another embodiment. 13 (a) and 13 (b) are plan and sectional views showing the processing steps of the present invention, and FIG. 14 is a sectional view showing another embodiment of the train wheel portion. 1 ...... Main plate 2 ...... Train wheel bridge 3 ...... 2nd wheel 4 ... 4th wheel 5 ... 5th wheel

Claims (1)

[Scope of utility model registration request] 1. A timepiece having a timepiece wheel, wherein the timepiece wheel has a bearing portion that engages with a receiving member, a pinion portion, and a tooth profile provided on an outer periphery of the pinion portion at one axial end of the pinion portion. It is composed of a plate-shaped base portion, the bearing portion, the pinion portion and the base portion are integrally formed by compression or forging from a thin plate-shaped metal material, and the tooth profile is formed by shearing. And watch.