JP2869350B2 - Clockwork pendulum fixing structure and its locking mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative pendulum for a table clock or a wall clock, and more particularly to a structure and a mechanism for locking and fixing a pendulum so as not to damage the pendulum when transferring a clock body.

[0002]

2. Description of the Related Art Today, an electronic timepiece using a crystal oscillator is widely used for displaying accurate time. A pendulum is unnecessary in this electronic timepiece, but a decorative body is used in a table clock or a wall clock. As one type of watch, many clock bodies having a movable part such as a pendulum have been used.

[0003] The decorative pendulum swings close to free oscillation when the timepiece is operated, and a space is formed around the pendulum. Therefore, when the watch body is transferred, the pendulum may move inside the watch body due to external vibration and impact, and may damage the pendulum itself or the inside of the watch body. For this reason, conventionally, an engagement portion for fixing the pendulum outside the swing range of the pendulum is formed inside the watch body, and in many cases, an engagement projection is formed on a part of the pendulum, and Various types of fixing recesses and the like, which engage with the mating projections, are provided outside the swing range of the ordinary pendulum, and the pendulum is fixed by engaging the engaging projections with the fixing recesses (for example, the actual flat pendulum 2). In addition, there is a case where a dedicated cushioning material for fixing the pendulum when the watch body is transferred is molded and manufactured separately from the watch body, and the pendulum is fixed using the cushioning material (for example, 54-1
No. 80771).

[0004]

As described above, the pendulum is provided with the engaging projection and the pendulum is fixed to the side of the swing range. However, the rattling of the pendulum cannot be completely prevented, and the pendulum may be damaged during transportation.

The size and shape of the cushioning material for preventing the movement of the pendulum differs depending on the size of the clock and the shape and size of the pendulum, and a dedicated material is required for each type of clock. Met. Furthermore, in a clock body in which the pendulum is fixed by the cushioning material, when the clock body is used, the cushioning material is unnecessary, so that the cushioning material is easily lost.
In order to attach and remove the cushioning material, the watch body needs an opening / closing part, and the shape and structure of the watch body are sometimes limited.

[0006]

According to the present invention, an engagement projection is provided on a pendulum, an engagement fixing portion for engaging with the engagement projection is provided inside the timepiece, and the engagement projection is engaged with the engagement fixing portion. By engaging the pendulum swing and engaging the engaging projections
When the pendulum is positioned at the fixing portion, the pendulum is fixed by the front pressing portion that presses a part of the pendulum from the front and the rear pressing portion that presses the pendulum from the rear of the pendulum at a position different from the position pressed from the front. I do.

For this purpose, according to the present invention, an engagement protrusion is provided on a pendulum, an engagement groove for penetrating the engagement protrusion is provided on a back cover, and the width of an end portion of the engagement groove is reduced. An engagement fixing portion is formed at the end of the watch body, and a front holding portion that contacts the front surface of the pendulum when the engaging projection is located at the engagement fixing portion is provided inside the watch body, and is located at a position different from the front holding portion. Also, a rear pressing portion which comes into contact with the rear surface of the pendulum when the engaging projection is located at the engagement fixing portion is also provided inside the watch body, and the front pressing portion and the rear pressing portion press and clamp the pendulum from front and rear. A locking mechanism.

[0008]

According to the present invention, the swing of the pendulum is locked by the engaging projections, and a part of the pendulum is pressed from the front and the rear by the front holding portion and the rear holding portion. Movement can also be prevented, and rattling of the pendulum can be reliably prevented.

[0009] Further, the locking mechanism in which an engagement groove through which the engagement protrusion penetrates is provided in the back cover and one end of the engagement groove is used as an engagement fixing portion,
By pushing the engaging projection penetrating the back cover into one end of the engaging groove, the swinging of the pendulum can be stopped. At this time, the front pressing part that contacts the front of the pendulum and the rear pressing that contacts the rear of the pendulum Since the pendulum is provided, the pendulum can be clamped from the front and rear by the front and rear holding parts, so that swinging to the left and right can be prevented, and movement in the front and rear can be locked and fixed.

Further, since the positions of the front and rear pressing portions are different from each other, the pendulum is securely pressed against the front and rear pressing portions due to the bending of the pendulum, and the movement in the front-rear direction is reliably prevented. be able to.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention is a decorative pendulum which operates to rotate an annular pendulum body 34 located around the dial 11 around the dial 11, as shown in FIG.
The decorative pendulum is fixed when the clock body 10 is transferred. As shown in FIG. 2, this decorative pendulum swings a swinging bar 31 around a support bar 21 positioned substantially at the center of the back surface of the dial 11, and an annular pendulum fixed to both ends of the swinging bar 31. Body 34
As shown in FIG. 3, a flat annular pendulum body 34 is formed at the front end of a short cylindrical frame 35, and the pendulum body 34 is arranged near the dial 11 to form a pendulum. An appropriate pattern is applied to the front surface of the main body 34.

The support rod 21 has a sharp support point 23 at an upper portion, and the support point 23 supports the inner wall of a fulcrum hole 32 provided in the swing rod 31 so that the swing rod 31 can swing. Reduce the resistance and use a driving device such as an electromagnet (not shown) to
By swinging the 31, the pendulum body 34 and the frame 35 are rotated. In this embodiment, a rod-shaped engaging projection 33 is provided on a part of the swinging rod 31, and an engaging groove 43 is provided on the back cover 41 of the timepiece case, as shown in FIG. The tip of 33 protrudes from the back of the back cover 41.

The engagement groove 43 is formed in an arc shape with the center of curvature substantially at the center of the dial 11 and has a width larger than the diameter of the engagement protrusion 33 and a through groove having a predetermined length. In order not to hinder the swing of the swing rod 31, the engagement groove 43
And a tip of the engagement projection 33 is projected from the back surface of the back cover 41. A fixed projection 44 is provided near one end of the engagement groove 43, and the engagement projection is provided at the position of the fixed projection 44. When the width of the mating groove 43 is set to be slightly smaller than the diameter of the engaging protrusion 33, and the engaging protrusion 33 is pushed into the end of the engaging groove 43 beyond the position of the fixed protrusion 44, An engagement fixing portion 45 in which the mating projection 33 is fixed by the end of the engagement groove 43 and the fixing projection 44.
Is formed at the end of the engagement groove 43.

Incidentally, the engagement groove 43 is locally formed by the fixed projection 44.
Not only when the width of the engaging groove 43 is reduced, the width of the engaging groove 43 is formed narrow near the end of the engaging groove 43, and the engaging protrusion 33 is inserted into the portion of the engaging groove 43 having the reduced groove width. When it is positioned as described above, the engagement fixing portion 45 that fixes the swinging bar 31 by holding the engagement protrusion 33 between both end edges of the engagement groove 43 so as to prevent swinging of the swinging bar 31 is provided. It may be formed near the end of the engagement groove 43.

The center of the engagement fixing portion 45 is located slightly closer to the center of the dial 11 than the center line of the engagement groove 43.
When the engagement protrusion 33 is pushed into the engagement fixing portion 45, the engagement protrusion
33 is slightly pushed up toward the center of the dial 11, and the support rod
The inner wall of the fulcrum hole 32 provided in the swinging rod 31 is raised from the support point 23 of the support 21. The engagement groove 43 forms a groove recess 47 around the engagement groove 43 so that the tip of the engagement protrusion 33 penetrating the engagement groove 43 does not project from the surface of the back cover 41. .

Further, as shown in FIG. 2, the decorative pendulum projects from the center of the watch body from four places at appropriate intervals from each other inside the annular frame portion 34 of the decorative pendulum. Forming a portion 36, 37, 38, 39, and, as shown in FIG. 3, a dial 11 provided inside a transparent front plate 12, and a central back side of the dial 11; On the back surface of the dial fixing plate 15 for fixing the positioned movement 13, a front holding portion 51 that comes into contact with the front surface of the protrusion 36 provided on the pendulum main body 34 is protruded, and furthermore, a protrusion provided on the pendulum main body 34 is provided. A rear holding portion 55 having a contact portion 57 that comes into contact with the rear surface of the portion 39 is also protruded.

That is, the 4 provided on the frame 35 of the decorative pendulum
The front pressing portion 51 which can contact the front surfaces of the first and third protruding portions 36, 38 among the protruding portions 36, 37, 38, 39 is a dial fixing plate.
15 is provided on the back surface, and the engaging projection 33 provided on the swing rod 31 is engaged with the engaging groove.
When the swinging rod 31, pendulum body 34 and frame 35 are rotated to the position where they are pushed into the engagement fixing portions 45 of 43, the first projecting portion 36 and the third projecting portion 38 ride on the front pressing portion 51 and The front surfaces of the first projecting portion 36 and the third projecting portion 38 come into contact with the front pressing portion 51.

The rear holding portion 55 has a support portion 56 projecting rearward from the back surface of the dial fixing plate 15, and has a contact portion 57 substantially parallel to the dial fixing plate 15 from the tip of the support portion 56. When the pendulum body 34 and the frame 35 are rotated to a position where the engagement protrusion 33 provided on the swinging rod 31 is pushed into the engagement fixing portion 45 of the engagement groove 43, the second protrusion 37 and the fourth The contact portion 57 is brought into contact with the rear surface of the protruding portion 39 so as to press the second protruding portion 37 and the fourth protruding portion 39 from behind.

The arrangement of the front pressing part 51 and the rear pressing part 55 is such that the front pressing part 51 and the rear pressing part 55 are alternately arranged. As described above, the pendulum of the timepiece body according to the present embodiment has the engaging protrusion 33 on the swinging bar 31, and when the engaging protrusion 33 is pushed into the engaging fixing portion 45 of the engaging groove 43, the fulcrum is The inner surface of the hole 32 is separated from the support point 23 of the support rod 21 to prevent the swing, and the first protrusion 36
In addition, the third projection 38 is brought into contact with the front holding section 51, and the second projection 37 and the fourth projection 39 are brought into contact with the rear holding section 55, so that the movement in the front-rear direction is also prevented and fixed.

Therefore, when the tip of the engaging projection 33 exposed through the back cover 41 is moved by a fingertip so as to be positioned at the engaging fixing section 45, the engaging fixing section 45 and the engaging projection 33 are moved. The swinging of the swinging bar 31 is prevented by the pressure contact engagement with the boss, and the decorative pendulum is moved in the front-rear direction by the contact engagement of the four protrusions 36, 37, 38, 39 with the front holding part 51 and the rear holding part 55. Is also blocked,
It is possible to reliably prevent rattling of the pendulum.

And, with this pendulum fixed,
Since the support point 23 is separated from the inner wall of the fulcrum hole 32, the support rod 21 that is easily damaged and has a large influence on the swing of the pendulum due to the damage is surely prevented, and can be moved back and forth, right and left. Can be easily prevented from damaging the entire pendulum or the inside of the timepiece simply by positioning the engagement protrusion 33 on the engagement fixing portion 45.

Further, this decorative pendulum has four projections 3
The two protrusions 36, 38 of 6, 37, 38, 39 are brought into contact with the front pressing portion 51, and the two protrusions 37, 39 of the four protrusions 36, 37, 38, 39 are provided. Is made to contact the rear pressing portion 55 so that the portion supported from the front of the pendulum body 34 and the portion supported from the rear are different from each other. And the rear pressing part 55 is formed so as to be surely brought into contact with and pressed against the front face of the second protruding part 37 or the fourth protruding part 39.
When forming so as to make contact pressure contact with the rear surface,
Even if the front holding part 51 is made to protrude a little more, and the contact part 57 of the rear holding part 55 is formed so as to be located slightly closer to the dial fixing plate 15, the pendulum body 34 and the frame part 35 may be bent or deformed. This makes it possible to absorb the manufacturing error of the front holding part 51 and the rear holding part 55, etc., so that each of the protrusions 36, 37, 38, 39 and the front holding part 51
And pressure contact with the rear pressing part 55 can be reliably performed.

By separating the front pressing portion 51 and the rear pressing portion 55 as described above, a pressing portion for holding and fixing one projecting portion from both front and rear surfaces is formed. There is an advantage that die-cutting production and production and molding of a die such as the dial fixing plate 15 are facilitated. In this embodiment, the front pressing portion 51 and the rear pressing portion are provided on the back of the dial fixing plate 15.
Although 55 is provided, it is sufficient that the front holding portion 51 and the rear holding portion 55 are formed at appropriate locations inside the timepiece body 10, such as inside the back cover 41.

In this embodiment, an annular pendulum body 34 is used.
However, in the case of a pendulum having a swing ball at the lower end of the swing bar and swinging the swing bar so as to vibrate the swing ball to the left and right, one or two front faces are used. The pressing portions 51 and the rear pressing portions 55 are alternately arranged, and three or four of the rod-shaped swinging rods are moved from one side or two by the front pressing portion 51 or the rear pressing portion 55 from front and rear. By pressing down, it is possible to prevent the pendulum such as the swinging rod from moving in the front-rear direction.

In this embodiment, the pendulum is fixed by the engaging projections 33 and the front and rear movements are fixed by the front pressing part 51 and the rear pressing part 55. The back cover 41 can be operated only by operating the pointer adjusting knob 17 and the opening / closing cover 49 for battery replacement is provided. Since it is sufficient to form the watch body 10 at an appropriate spatial position inside the body, the design and manufacture of the timepiece body 10 can be facilitated.

[0026]

According to the present invention, the swing of the pendulum is locked by the engagement projection, and a part of the pendulum is pressed from the front by the front pressing part, and also pressed from the rear by the rear pressing part to be fixed. Therefore, the pendulum is fixed so that it does not move back and forth, right and left, and has a fixed structure in which the pendulum does not move during transfer and does not damage the inside of the pendulum or the clock body.
Since the position pressed from the front and the position pressed from the rear are different, the fixing structure is easy to manufacture.

[0027] Further, a locking mechanism having an engagement protrusion provided on a pendulum, an engagement groove formed with an engagement fixing portion on a back cover, and having a front pressing portion and a rear pressing portion inside the watch body,
The pendulum is prevented from moving left and right only by pushing the engagement protrusion into the engagement fixing part, and is also prevented from moving back and forth by the front holding part and the rear holding part. This is a locking mechanism that can securely fix the pendulum and prevent the pendulum from moving back and forth and right and left only by applying a slight external force to the engaging projection with a fingertip or the like. It also has

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a pendulum provided with a locking mechanism according to the present invention.

FIG. 2 is a rear view of the timepiece showing a pendulum provided with a locking mechanism according to the present invention.

FIG. 3 is a sectional side view of a timepiece having a pendulum provided with a locking mechanism according to the present invention.

FIG. 4 is an enlarged view showing a part of a locking mechanism according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Watch body 11 Dial 12 Front plate 13 Movement 15 Dial fixing plate 17 Pointer adjustment knob 21 Support rod 23 Support point 31 Vibration rod 32 Support hole 33 Engagement projection 34 Pendulum main body 35 Frames 36, 37, 38,
39 Projection 41 Back lid 43 Engagement groove 44 Fixing projection 45 Engagement fixing part 47 Groove recess 51 Front holding part 55 Rear holding part 56 Support part 57 Contact part

Claims (2)

(57) [Claims] An engaging projection is formed on a pendulum, an engagement fixing portion for engaging with the engaging projection is formed inside the watch body, and the engaging projection is engaged with the engaging fixing portion to thereby form the pendulum. In addition to locking the swing, the engagement projection of the pendulum is
When allowed, features and front pressing portion for pressing a portion of the vibration Rico from the front, and a rear surface pressing portion for pressing the pendulum from the rear of the pendulum between the different positions positions of pressing from the front, securing the pendulum by The pendulum fixing structure of the watch body. The pendulum has an engaging protrusion, the back cover has an engaging groove through which the engaging protrusion penetrates, and the end of the engaging groove has a narrow groove width corresponding to the width of the engaging protrusion. A front holding portion having an engagement fixing portion, and having a front holding portion for contacting the front surface of the pendulum and pressing the front surface of the pendulum when the engagement projection is positioned at the engagement fixing portion, inside the watch body; To a different position from
A pendulum locking mechanism for a clock body, wherein the clock body further includes a rear surface pressing portion that contacts the rear surface of the pendulum when the engagement protrusion is positioned at the engagement fixing portion and presses the rear surface of the pendulum. .