JP2016057520A - Clock for learning - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operability of slight advancing or turning back of a minute hand at each scale.SOLUTION: In a clock for learning constructed so that a minute hand 8 and an hour hand 9 each installed to a rotational axis having an inner and outer double structure that penetrates a center of a clock dial 7 rotates due to rotational operation of a disk-shaped operation plate 11 via a minute gear and an hour gear respectively, the operation plate 11 is arranged on the same axis as the clock dial 7 with its center fixed to the rotational axis of the minute hand 8 and its peripheral part exposed from an opening 4 provided on a peripheral part of a clock housing 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a learning clock used for teaching time reading to lower grade school children and infants.

  For example, a learning clock 101 as shown in FIGS. 11 to 13 is used to teach a first grader or a second grader of a lower grade school child how to read the clock time (see, for example, Patent Document 1).

  The learning timepiece 101 includes a resin timepiece housing 102 and a pedestal portion 103 formed integrally therewith. The inside of the watch housing 102 is partitioned into a front space portion 105 and a rear space portion 106 by providing a partition wall 104 in the middle in the depth direction. As with a general-purpose clock, a minute scale and a time numeral are displayed on the outer periphery of the clock face 107 attached to the front space portion 105, respectively, and a minute hand 108, hour hand 109 and Is disposed, and the front surface is closed by a cover 110 made of transparent resin.

  An operation dial 111, a part of which protrudes from the peripheral surface of the watch housing 102, is rotatably provided on the partition wall 104 on the rear space 106 side. A pinion 112 is fixed around the rotation center of the operation dial 111, and a large-diameter intermediate gear 113 is meshed with the pinion 112. The intermediate gear 113 is meshed with a small-diameter minute gear 114, and a pinion 115 fixed around the rotation center of the intermediate gear 113 is meshed with a large-diameter hour gear 116.

  Further, a front shaft 118 protruding forward from the center of the split gear 114 is rotatably inserted into the cylindrical portion 117 fixed to the center of the hour gear 116, and these pass through the center of the timepiece dial 107. Of the shafts (cylindrical portion 117 and front shaft 118) of the inner and outer double structure, the base portion of the minute hand 108 is inserted and fixed to the front shaft 118, and the base portion of the hour hand 109 is inserted and fixed to the cylindrical portion 117.

  According to this configuration, when the operation dial 111 is rotated left and right, the intermediate gear 113 that meshes with the pinion 112 of the operation dial 111 rotates in the same direction. As the intermediate gear 113 rotates, the minute gear 114 meshed with the intermediate gear 113 and the hour gear 116 meshed with the pinion 115 of the intermediate gear 113 rotate, and the minute hand 108 and the hour hand 109 rotate with a predetermined relationship. To do. Then, the time pointed by the minute hand 108 and the hour hand 109 at this time is read by the minute scale and the time number displayed on the outer periphery of the clock face 107 to understand how to read the time.

JP 2000-112337 A

  In the learning watch 101 having such a configuration, the operation dial 111 protrudes only on one side (right side as viewed from the front) of the watch housing 102, which causes a problem that it is difficult to operate for a left-handed child. It was.

  In some learning watches 101 having such a configuration, the gear ratio is set so that one rotation of the operation dial 111 corresponds to one rotation of the minute hand 108. However, since the minute hand 108 and the hour hand 109 are moved by operating the small operation dial 111, there is a problem that it is particularly difficult to perform a fine operation such as advancing and returning the minute hand 108 which is a long hand in units of 1 minute.

  In view of this, a click mechanism that temporarily stops the rotation of the operation dial 111 every time the operation dial 111 is slightly rotated is provided to convey a click feeling to the hand operating the operation dial 111.

  However, the operation of rotating the operation dial 111, which is a small disk, by 1/60 (that is, the operation of advancing or returning the minute hand by 1 minute) is a very fine rotation operation. There was a problem that -4 clicks were made (that is, the minute hand advanced or returned 3-4 minutes at a stroke). In addition, there is a problem in that a backlash occurs after the minute hand advances at a stroke for 3 to 4 minutes.

  On the other hand, it may be possible to strengthen the click engagement structure to some extent so that it can be stopped with one click, but this time, a force is required for one-click operation, and operability when the minute hand needs to be advanced quickly. There is a problem that becomes extremely worse. Moreover, there is also a problem that the minute hand can be moved in 3-4 clicks at once by applying force.

  The present invention was devised to solve such problems. The purpose of the present invention is to enlarge the operation dial (operation plate) and to provide the left and right sides of the portion protruding from the watch case when viewed from the front. An object of the present invention is to provide a learning watch with improved operability regardless of the dominant hand. Another purpose is to enlarge the operation dial and fix it coaxially with the minute hand so that the advancement of the operation dial matches the minute hand, and the click mechanism so that one minute of the minute hand corresponds to one click. It is to provide a learning timepiece in which the operability of the advance (or return) of the minute hand is improved.

  In order to solve the above-mentioned problems, the learning timepiece of the present invention has a minute hand and an hour hand attached to a rotary shaft of an inner / outer double structure penetrating the center of the timepiece dial by rotating the disk-like operation plate. A learning timepiece configured to rotate via the clock dial, wherein the operation plate is arranged coaxially with the timepiece dial, and a center thereof is fixed to the rotation shaft of the minute hand, and The peripheral portion is exposed to the outside through an opening provided in the peripheral portion of the watch housing.

  According to this configuration, since the rotation axis of the minute hand is directly rotated by the operation plate arranged coaxially with the timepiece dial, one rotation of the operation plate and one rotation of the minute hand directly correspond to each other. . In addition, since the operation plate is formed in a large-diameter disk so as to be exposed to the outside from the peripheral portion of the watch casing, the movement amount (rotation amount) of one minute (one scale of the display panel) of the tip of the minute hand ) And the movement amount (rotation amount) corresponding to one minute of the operation plate are substantially the same movement amount (rotation amount). Therefore, for school children and infants (hereinafter referred to as children), a delicate rotation operation for advancing the minute hand by 1 minute is not required, and the operability is extremely excellent.

  Further, according to the learning timepiece of the invention, the opening is provided on at least two side portions on the left and right sides of the peripheral portion of the timepiece housing via the central upper portion of the timepiece housing. It is good also as a structure. Further, according to the learning timepiece of the invention, the opening is provided in a series from the left side of the timepiece case to the right side through the center upper portion of the periphery of the timepiece case. It is good also as a structure. According to this configuration, a right-handed child and a left-handed child can operate the operation panel in the same manner regardless of the dominant hand.

  Further, according to the learning timepiece of the invention, the opening may be provided in a lower central portion of the timepiece casing in a peripheral portion of the timepiece casing. According to this configuration, the operation panel can be operated by placing the learning watch on a desk and moving it to the left or right.

  Further, according to the learning timepiece of the invention, the operation plate is provided with a click mechanism that temporarily stops the rotation for each angle corresponding to one division of the minute hand.

  According to this configuration, every time the operation plate is rotated by the same amount as the advance amount of the minute hand, the click mechanism can be operated to obtain a click feeling, so that the operability is improved for the child.

  According to the learning timepiece of the invention, the click mechanism includes a locking ring formed concentrically with the rotation shaft along a peripheral edge of one surface of the operation plate, and the operation plate. A locking body that presses against the locking ring provided on the inner wall of the timepiece housing that faces one surface, and the locking ring has 60 recesses that are continuously spaced over the entire circumference. The locking body is composed of an action part that fits into a recess of the locking ring, and an arm part that supports the action part so as to be elastically displaceable so as to be in pressure contact with the locking ring. Has been.

  According to this configuration, only by lightly operating (turning) the operation plate, each time the minute hand advances (or returns), the rotation of the operation plate is stopped once with a light click feeling. To do.

  Further, according to the learning timepiece of the invention, the operation plate has a fractional number written around the back surface, and the fractional number is arranged on the back surface of the timepiece casing facing the back surface of the operation plate. It is good also as a structure provided with the display window which displays. According to this configuration, the position indicated by the minute hand can be easily confirmed by the child with the numbers on the display window.

  According to the present invention, the rotation axis of the minute hand is directly rotated by the operation plate, and one rotation of the operation plate and one rotation of the minute hand directly correspond to each other. Min) Rotation operation to advance or return becomes easy. The operation panel is exposed to the outside through at least two openings on the left and right sides of the watch housing, so that right-handed and left-handed children can use the same operation panel regardless of their handedness. Can be operated.

  Further, according to the present invention, every time the operation plate is rotated by the same amount as the advance amount of the minute hand, the click mechanism can be operated to obtain a click feeling, and the advance and retreat of the minute hand is changed every minute (one scale). Since it can be stopped once, the operability for the child is improved. In particular, the operability in learning how to advance the minute hand is excellent.

It is the perspective view which looked at the timepiece for learning which concerns on embodiment of this invention from the front side. It is the disassembled perspective view which looked at the timepiece for learning which concerns on this embodiment from the front side. It is the disassembled perspective view which looked at the timepiece for learning which concerns on this embodiment from the back side. It is a disassembled perspective view which shows the internal mechanism of the timepiece for learning which concerns on this embodiment. It is the schematic which looked at the timepiece for learning which concerns on this embodiment transparently from the front side. It is explanatory drawing which expands and shows a part of other Example of a click mechanism. It is explanatory drawing which expands and shows further another Example of a click mechanism. It is a perspective view which shows the other Example of the opening part provided in the peripheral part of a timepiece housing | casing. It is a front view which shows the further another Example of the opening part provided in the peripheral part of a timepiece housing | casing. It is a disassembled perspective view which shows the structure which added the minute display window to the timepiece for learning. It is a rear view which shows the structure which added the minute display window to the timepiece for learning. It is a disassembled perspective view which shows an example of the conventional timepiece for learning. It is the schematic which looked at the conventional timepiece for learning transparently from the front side. It is a disassembled perspective view which shows the internal mechanism of the conventional timepiece for learning.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 is a perspective view of a learning timepiece according to an embodiment of the present invention as viewed from the front side, FIG. 2 is an exploded perspective view of the timepiece for learning according to the present embodiment as viewed from the front side, and FIG. 4 is an exploded perspective view of the learning timepiece according to the embodiment as viewed from the back side, FIG. 4 is an exploded perspective view showing the internal mechanism of the learning timepiece according to the embodiment, and FIG. 5 is a learning timepiece according to the embodiment. It is the schematic which looked at transparently from the front side.

  The learning timepiece 1 according to the present embodiment includes a resin-made timepiece housing 2 having an upper portion formed in a semicircular arc shape and a pedestal portion 3 formed integrally therewith. The watch housing 2 is composed of a front housing 2a and a rear housing 2b that are divided into two front and rear at the center in the front-rear direction, and the pedestal portion 3 is provided on the front housing 2a.

  On the outer periphery of the clock face 7 attached to the front wall 2a1 of the front housing 2a, a minute scale and a time number are displayed respectively, as in a general-purpose clock, and a minute hand 8 and an hour hand are at the center. 9 is disposed, and the entire front wall 2a1 of the front housing 2a is closed by a cover 10 made of transparent resin.

  The front housing 2a and the rear housing 2b are provided with openings 4a and 4b, respectively, where the peripheral surface is recessed by one step. The openings 4a and 4b are also provided in a state of being divided into two in the front and rear directions. By combining the openings 4a and 4b, one long opening 4 is formed along the peripheral surface. Yes. In the present embodiment, the opening 4 has two left and right side portions (more specifically, the watch housing 2 in both hands through the central upper portion 2d of the watch housing 2 in the peripheral portion of the watch housing 2. 2c and 2e, which are easy to operate with the left and right index fingers respectively. However, the locations where the openings 4 are provided are not limited to two. For example, it is possible to provide a total of four locations by further providing openings 4 and 4 on the lower sides of these openings 4 and 4, respectively.

  On the rear wall 2a2 of the front housing 2a, there is rotatably provided an operation plate 11 part of which protrudes from the openings 4 and 4 of the timepiece housing 2. The operation plate 11 includes a front shaft (rotary shaft) 18 that protrudes forward from the center of rotation. A pinion 12 is fixed around the front shaft 18, and an intermediate gear 13 is engaged with the pinion 12. Yes. A large-diameter hour gear 16 is engaged with a pinion 15 fixed around the rotation center of the intermediate gear 13.

  Further, a front shaft 18 protruding forward from the center of the operation plate 11 is rotatably inserted in the cylindrical portion 17 fixed to the center of the hour gear 16, and penetrates through the center of the timepiece dial 7. Of the shafts (cylindrical portion 17 and front shaft 18) of the inner and outer double structures, the base portion of the minute hand 8 is inserted and fixed to the front shaft 18, and the base portion of the hour hand 9 is inserted and fixed to the cylindrical portion 17. That is, the operation plate 11 is arranged coaxially with the timepiece dial 7.

  According to this configuration, when the operation plate 11 protruding from the opening 4 is rotated left and right, the minute hand 8 directly connected thereto rotates in the same direction by the same movement amount. At this time, the intermediate gear 13 that meshes with the pinion 12 of the operation plate 11 rotates in the same direction, and the rotation of the intermediate gear 13 rotates the gear 16 that meshes with the pinion 15 of the intermediate gear 13. Thereby, the hand 8 and the hour hand 9 are respectively rotated with a predetermined relationship according to the gear ratio.

  According to this embodiment, since the front shaft 18 which is the rotation axis of the minute hand 8 is directly rotated by the operation plate 11, one rotation of the operation plate 11 and one rotation of the minute hand 8 directly correspond to each other. The operation plate 11 is formed in a large-diameter disk so as to be exposed to the outside from the openings 4 and 4 on the peripheral surface of the timepiece housing 2. Therefore, the movement amount (rotation amount) corresponding to one minute (rotation amount) corresponding to 1 minute of the operation plate 11 and the movement amount (rotation amount) corresponding to one minute of the operation plate 11 are substantially equal to the movement amount (rotation amount). It has become. Therefore, for a child, a delicate rotation operation for advancing (or returning) the minute hand 8 by 1 minute as in a conventional learning clock is not required, and particularly excellent in operability in learning how to advance the minute hand 8. It has become. Further, the opening 4 is provided in at least two side portions 2 c and 2 e through the central upper portion 2 d of the watch housing 2. Therefore, regardless of the handedness, a right-handed child and a left-handed child can operate the operation panel 11 in the same manner.

  In the present embodiment, the operation plate 11 is provided with a click mechanism 20 that temporarily stops the rotation for each angle corresponding to one division of the minute hand 8.

  The click mechanism 20 includes a locking ring 21 formed concentrically with the front shaft 18 along the peripheral edge of the operation plate 11 on the front surface side, and a rear wall 2a2 of the front housing 2a facing the front surface of the operation plate 11. And a locking body 25 that is pressed against the locking ring 21.

  As shown mainly in FIGS. 4 and 5, the locking ring 21 has 60 concave portions 21 a formed continuously at equal intervals over the entire circumference, and the pitch P is a minute scale of the timepiece dial 7. Is substantially equal to the pitch P (interval of one scale) P.

  On the other hand, the locking body 25 includes an action portion 26 that fits into the recess 21 a of the locking ring 21, and an arm portion 27 that supports the action portion 26 so as to be elastically displaceable so as to be in pressure contact with the locking ring 21. .

  The base end portion 27a of the arm portion 27 is fixed to the rear wall 2a2 of the front housing 2a (specifically, two fitting holes formed in the base end portion 27a on two protrusions formed on the rear wall 2a2) Are inserted and fixed), and a ring-shaped (annular) action portion 26 is integrally formed at the tip thereof. The locking body 25 is integrally formed of resin, and the arm portion 27 supports the action portion 26 so as to be elastically displaceable by the elastic force of the resin. However, in consideration of durability and the like, the arm portion 27 may use a metal spring body.

  According to this configuration, each time the operation plate 11 is rotated by the same amount as the advance amount (specifically, one scale) of the minute hand 8, the action portion 26 passes the locking ring 21 over one mountain from the one recess 21a. A click feeling can be obtained by fitting into the recess 21a. That is, only by lightly operating the operating plate 11 (turning it lightly), every time the minute hand 8 advances (or returns), the operating plate 11 stops once with a light click feeling. The operability when proceeding is improved. Therefore, the progress of 1 minute (one scale) can be simulated for the child even with the feel of the hand, so that learning of time can be performed more intuitively.

  Here, in this embodiment, the recessed part 21a of the locking ring 21 is triangular, and the action part 26 is ring-shaped (annular). That is, since the concave portion 21a and the action portion 26 have different shapes, the action portion 26 does not completely match the concave portion 21a and has a loose engagement structure. Therefore, only by lightly operating the operation plate 11 (turning it lightly), the rotation of the operation plate 11 is gently stopped with a light click feeling every time the minute hand 8 advances (or returns) for 1 minute. It is very good.

  In other words, in the conventional learning watch, there was a situation in which the minute hand advances at a stretch for several minutes by strongly operating the operation dial, or a backlash occurs in which the minute hand reverses due to the reaction. In the watch 1, such a situation hardly occurs.

  6A and 6B show another embodiment of the click mechanism 20.

  In FIG. 6A, the concave portion 21a of the locking ring 21 is formed in a continuous semicircular arc (or sine curve) wave piece. However, the curvature of the action part 26 is configured to be a gentle curvature compared to the curvature of the recess 21a. As a result, the engagement between the recess 21a and the action portion 26 becomes a loose engagement structure that does not fit completely, and a gentle click feeling and stop feeling can be realized. In addition, as a shape of the action part 26, it is good also as a semicircle shape which made only the part (action part) which contacts the recessed part 21a circular arc shape. Moreover, instead of such a complete arc shape, for example, an elliptical shape or the like may be used. That is, the shape of the part (acting part) that contacts the recess 21a of the action part 26 may be a curved shape, and is not limited to a circle or an ellipse.

  In FIG. 6B, the action part 26 is formed in a triangular shape with respect to the semicircular arc shaped (or sine curve shaped) concave part 21a. Even in this case, the engagement between the concave portion 21a and the action portion 26 has a loose engagement structure that does not fit completely, and a gentle click feeling and stop feeling can be realized. In addition to the triangular shape, the action portion 26 may have a pentagonal shape, a hexagonal shape, or a polygonal shape higher than that.

  FIG. 7 is a perspective view showing another embodiment of the opening 4 provided in the peripheral portion of the watch housing 2.

  In the embodiment described above, the opening 4 is provided on each of the left and right side portions of the peripheral portion of the watch housing 2 via the central upper portion of the watch housing 2, but the embodiment shown in FIG. In the peripheral portion of the watch housing 2, the opening 4 is a series (ie, one long opening) from the left side 2c of the watch housing 2 through the central upper portion 2d to the right side 2e. As). Therefore, also in this case, regardless of the handedness, the right-handed child and the left-handed child can operate the operation panel 11 in the same manner.

  FIG. 8 is a front view showing still another embodiment of the opening 4 provided in the peripheral portion of the timepiece housing 2.

  In the embodiment shown in FIG. 8, in addition to the opening 4 shown in FIG. 7, another opening 4 having the same configuration is provided in the lower central part 2 f of the watch housing 2.

  According to this configuration, the operation plate 11 can be operated by placing the learning watch 1 on a desk and moving it to the left and right, for example. Therefore, for example, with the time axis set in the horizontal direction, a sheet is prepared in which fractional numbers are sequentially written on the time axis so as to correspond to the amount of movement of the operation plate 11 per minute, and the learning clock 1 is placed on this sheet. By moving to the left and right, the progress of time can be visually experienced by the actual amount of movement of the learning watch 1 itself. That is, a concept such as the length of time can be visually shown as a movement amount on the time axis (that is, as a fractional difference).

  In FIG. 8, in addition to the opening 4 shown in FIG. 7, the opening 4 is provided in the lower central part 2f of the timepiece housing 2. For example, the left and right openings 4 and 4 shown in FIG. In addition, the opening 4 may be provided in the lower central portion 2f of the watch housing 2.

  9 and 10 show a configuration in which a minute display window is added to the learning clock 1, FIG. 9 is an exploded perspective view, and FIG. 10 is a rear view. However, in the rear view shown in FIG. 10, the fractional numbers are partially shown in perspective.

  In other words, the fractional number 22 is written around the back surface of the operation plate 11, and the fractional number 22 of the operation plate 11 is displayed on the rear housing 2 b that is the back surface of the watch housing 2 facing the back surface of the operation plate 11. The window 23 is provided. According to this configuration, the position of the minute scale pointed by the minute hand 8 can be easily confirmed by the child with the numbers on the display window 23.

  In the above embodiment, the recess 21 a of the locking ring 21 is formed along the inner peripheral surface of the locking ring 21. In other words, the structure is such that the unevenness is repeated toward the center of the locking ring 21, but the unevenness may be repeated vertically along the upper end surface of the locking ring 21 (that is, in the front-rear direction of the watch housing 2). . In this case, the action part 26 of the locking body 25 may be a sphere, for example, and may be provided in pressure contact with the upper end surface of the locking ring 21 so as to be elastically displaceable up and down.

  The embodiments disclosed herein are illustrative in all respects and do not serve as a basis for limited interpretation. Therefore, the technical scope of the present invention is not interpreted only by the above-described embodiments, but is defined based on the description of the scope of claims. Moreover, all the changes within the meaning and range equivalent to a claim are included.

DESCRIPTION OF SYMBOLS 1 Learning clock 2 Clock case 2a Front side case 2a1 Front wall 2a2 Rear side wall 2b Rear side case 2c Left side part 2d Upper center part 2e Right side part 3 Base part 4, 4a, 4b Opening part 7 Clock face 8 minute hand 9 hour hand 10 cover 11 operation plate 12 pinion 13 intermediate gear 15 pinion 16 hour gear 17 cylindrical part (rotating shaft)
18 Front shaft (rotary shaft)
20 click mechanism 21 locking ring 21a recess 25 locking body 26 action part 27 arm part

Claims (7)

A learning timepiece in which the minute hand and hour hand attached to the rotary shaft of the inner and outer double structure penetrating through the center of the clock face are each rotated via a gear by rotating the disk-like operation plate. There,
The operation plate is arranged coaxially with the timepiece dial, the center thereof is fixed to the rotation shaft of the minute hand, and the peripheral portion thereof is from an opening provided in the peripheral portion of the timepiece casing. A learning clock characterized by being exposed to the outside. The learning watch according to claim 1,
The learning timepiece is characterized in that the opening is provided on at least two side portions of the peripheral portion of the timepiece housing via the central upper portion of the timepiece housing. The learning watch according to claim 1,
The learning timepiece is characterized in that the opening is provided in a series from the left side of the timepiece case to the right side through a central upper portion of the periphery of the timepiece case. The learning watch according to any one of claims 1 to 3,
The timepiece for learning according to claim 1, wherein the opening is provided in a lower central portion of the timepiece casing in a peripheral portion of the timepiece casing. A learning watch according to any one of claims 1 to 4,
The learning timepiece is provided with a click mechanism for temporarily stopping the rotation for each angle corresponding to one scale of the minute hand on the operation plate. The learning watch according to claim 5,
The click mechanism includes a locking ring formed concentrically with the rotating shaft along a peripheral portion of one surface of the operation plate, and an inner wall of the timepiece casing facing the one surface of the operation plate. A locking body pressed against the locking ring provided in the
The locking ring has 60 recesses formed continuously at equal intervals over the entire circumference,
The locking body includes an action portion that fits into a recess of the lock ring, and an arm portion that supports the action portion so as to be elastically displaceable so as to be pressed against the lock ring. Watch. The learning timepiece according to any one of claims 1 to 6,
On the operation plate, fractional numbers are written around the back surface,
A learning timepiece, wherein a display window for displaying the fractional digits is provided on a back surface of the timepiece casing facing a back surface of the operation panel.

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