JPH0665894U - Wooden frame clock - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent damage to the glass due to inconsistencies in the contact surface between the glass and the rear frame when assembling a wooden frame clock. [Structure] A rear frame 2 to which a timepiece mechanical body 1 is attached, and a wooden frame 3
A wooden frame clock is constructed by holding a glass 9 between and. Glass pressing portion 2c protruding around the front surface of the rear frame 2
A concave portion 2f for avoiding contact with the glass 9 is formed at each corner of the.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wooden frame clock.

[0002]

[Prior art]

 As a so-called wooden frame clock that uses wood for the front frame of the watch, a rear frame that incorporates the clock mechanical body is brought into contact with the back of a front frame made of wood (hereinafter referred to as the “wooden frame”), and a glass is placed between the two. There is a clamping part that is held at several points around and is fixed by screws. The wooden frame is provided with a glass fitting portion formed by combining several wooden piece members and forming the front side of the assembled wooden frame so as to project inward. The periphery of the front of the glass comes into contact with the back of the glass fitting part, and the periphery of the back of the glass is pressed by the glass retainer of the rear frame, and the rear frame is screwed to the front frame to fix the three members together. ing.

However, since the wooden frame is a frame made by joining a plurality of wood piece members together, a step is formed at the joint due to its structure. When the glass is attached to the wooden frame timepiece having such a structure, the pressing force due to the contact between the glass and the glass holding portion may not be uniform due to the step difference of the seam formed on the back surface of the glass fitting portion. For this reason, there is a gap between the glass holding part of the rear frame and the glass, which makes the fixing of the glass unstable, and if the part where the gap is created is tightened tightly, the glass holding part will cause local damage. The local pressing force may act to break the glass.

In order to bring the glass holding portion of the rear frame and the glass into contact with each other with a uniform pressing force, it is necessary to process the wooden frame so that no step is formed at the seam, but it is necessary to process the wooden frame. If such severe processing is required, it will be impossible in terms of cost. Therefore, as a measure to prevent the glass from being attached and to prevent the glass from being damaged, a packing or the like is interposed between the glass pressing portion and the front glass to prevent a gap. In addition, a means for increasing the tightening allowance for screwing so that the tightening force is applied to the glass evenly is also used.

[0005]

[Problems to be solved by the device]

 As described above, when packing is interposed between the glass and the glass retainer in order to prevent the glass from being damaged, the cost is high due to the cost of parts and the need to attach the packing. Become. In addition, when the tightening margin is increased, it is necessary to be careful when tightening, which is troublesome, and the tightening amount becomes large, and the glass may be damaged due to excessive force applied. Inconvenience such as occurs.

Therefore, an object of the present invention is to prevent breakage of the glass at the time of assembly by providing concave portions at the corners of the glass pressing portion for avoiding contact with the glass.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the wooden frame timepiece of the present invention has a rear frame to which a timepiece mechanical body is attached, a wooden frame screwed and fixed to the front surface of the rear frame, and a rear frame. In a wooden frame timepiece having a glass held between a glass holding portion and a glass fitting portion provided on the back surface of the wooden frame, a glass corner portion is provided at each corner of the glass holding portion. A recess is formed to avoid contact with the.

[0008]

[Action]

 If the glass frame is sandwiched between the glass retainer and the glass fitting part and the rear frame and the wooden frame are fixed by screws, the force applied to the glass will be imbalanced due to the unevenness of the seam of the wooden frame. . Due to the effect of unbalanced forces, the corners of the glass tend to be displaced from their originally planned positions. At this time, the corner portion of the glass enters into the recess of the corner portion of the glass pressing portion, avoiding contact with the glass pressing portion, and imbalanced force does not act on the glass.

[0009]

【Example】

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 2, the rear face of the wooden frame 3 is brought into contact with the front face of the rear frame 2 in which the timepiece mechanical body 1 is attached to the central portion, and is fixed by screws 4 and 4. The central portion of the rear frame 2 projects to the front surface, and the timepiece mechanical body 1 described above is housed in a mounting recess 2a formed on the rear surface. The periphery of the mounting recess 2a is a back surface 2b for hanging on the wall, and the periphery of the mounting recess 2a overhangs the outside to form a step for attaching the dial inside, and the wall of the step is projected forward. A glass pressing portion 2c that supports a glass 9 described later is formed. A dial 5 is provided in contact with the step portion of the front frame and the rear frame of the mounting recess 2a of the timepiece mechanical body 1. A flange portion 2d for contacting the wooden frame 3 is provided on the outer peripheral portion of the glass pressing portion 2c. At the upper end of the rear surface of the rear frame 2, there is provided a hooking hole 2e which is partially recessed and whose upper side is formed in parallel. An hour hand 6, a minute hand 7 and a second hand 8 are attached to a pointer shaft 1a protruding from the central portion of the front surface of the timepiece mechanical body 1.

A glass 9 serving as a front cover is sandwiched between the glass pressing portion 2c of the rear frame and the back surface of the glass fitting portion 3a that extends to the inner peripheral portion of the wooden frame 3.

As shown in FIG. 1, at the corners of the four corners of the glass pressing portion 2c, each is retracted by about 0.5 mm from the other tip surface at a distance of about 50 mm from the bent position. A concave portion 2f is provided. The recess 2f is a wooden frame caused by a step generated at the seam of the wooden frame 3 when the glass 9 is sandwiched between the rear frame 2 and the wooden frame 3 and the glass 9 is attached by screwing. This is an escape area when the glass 9 is distorted due to the mismatch between the glass 3 and the glass 9.

As shown in FIG. 3, the glass 9 is distorted due to the misalignment between the wooden frame 3 and the glass 9, and the corner 9a is displaced and pressed by the glass retainer 2c, the glass 9 may be damaged. However, at this time, as shown by the chain double-dashed line, the corner 9a of the glass 9 can enter this recess 2f, so contact between the two is avoided, and the glass 9 and the glass retainer 2c are pushed. The pressure can be reduced. Therefore, the tightening force at the time of screwing does not exert an unreasonable force on the glass 9, and the glass 9 can be prevented from being damaged.

As shown in FIG. 1, a screwing portion 2g into which the screw 4 is inserted is formed at the center of each side of the flange portion 2d of the rear frame 2. A sawtooth-shaped projection 2h is formed at the tip of the glass pressing portion 2c near each of the screw fastening portions 2g. The convex portions 2h have a height of about 1 mm, a pitch of about 2 mm, a length of a forming range of about 24 mm, and a width of about 2/3 of the width of the glass pressing portion. The tip of the convex portion 2h is formed to be higher than the front end surface of the glass pressing portion 2c by about 0.3 mm.

When the glass 9 is sandwiched between the glass pressing portion 2c and the glass fitting portion 3a and each side of the flange portion 2d is screwed with the screw 4, the rear surface of the glass 9 and the tip portion of the glass pressing portion 2c At the portion where the abuts with each other, a misalignment occurs due to the step formed at the joint of the wooden frame 3, and there are places where the tip strongly hits and where there is a gap. For this reason, there is a gap in the portion where the back surface of the glass 9 and the tip of the glass pressing portion 2c are present, and in the portion where the glass fitting surface 3a recedes to the front side of the wooden frame 3, the tip of the convex portion 2h. The glass 9 is supported by the part.

On the other hand, in the portion where the fitting surface 3a of the wooden frame 3 is advanced to the back side of the wooden frame 3, the tip of the convex portion 2h is crushed by the pressing force when screwing, and the glass 9 The inside and the tip of the glass pressing portion 2c are in contact with each other. As a result, even if there is a step at the joint of the wooden frame 3, a gap is generated between the tip of the glass pressing portion 2c and the glass 9 when each side of the flange portion 2d is tightened with the screw 4 for assembly. The portion to be supported is supported by the convex portion 2h, and at the place where it strongly hits the glass 9, the force exerted on the glass 9 by tightening is absorbed in order to absorb the force generated here by the crushing of the tips of these convex portions 2h. It is reduced, and it becomes possible to avoid damage to the glass 9.

Although the wall clock has been described in the present embodiment, the present invention is not limited to this, and is also applicable to an alarm clock, a table clock, and the like. The height, shape, width, etc. of the convex portion are changed in response to changes in the configuration of the wooden frame and the rear frame.

[0017]

[Effect of device]

 As explained above, the corners of the glass holding part of the rear frame are provided with recesses to avoid contact with the glass.Therefore, when assembling the frame, the glass may be misaligned between the wooden frame and the glass. Even if the corner part of the glass is displaced, this corner part goes into the recess, so contact between the glass holding part and the corner part of the glass is avoided, and excessive pressing force does not act on the glass. can avoid. Moreover, since it is not necessary to interpose packing, the labor for interposing packing is not necessary. Further, since the risk of glass breakage is reduced and the work of assembling the frame is facilitated, the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a front view of a rear frame.

FIG. 2 is a sectional view of an essential part of the present invention.

FIG. 3 is a partially enlarged cross-sectional view showing a state of a concave portion of a rear frame and a corner portion of glass.

[Explanation of symbols]

 1 Clock mechanical body 2 Rear frame 2c Glass holding part 2f Recessed part 3 Wooden frame 3a Glass fitting part 9 Glass 9a Glass corner part

Claims (1)

[Scope of utility model registration request] 1. A rear frame to which a timepiece mechanical body is mounted, a wooden frame screwed and fixed to the front surface of the rear frame, a glass retainer formed on the rear frame, and a rear surface of the wooden frame. In a wooden frame timepiece provided with a glass sandwiched between the glass fitting portion provided in, each corner portion of the glass pressing portion has a concave portion for avoiding contact with the corner portion of the glass. A wooden frame clock characterized by being formed.