CN114609880A

CN114609880A - Fixedly arranged timepiece

Info

Publication number: CN114609880A
Application number: CN202111486377.9A
Authority: CN
Inventors: 扬·斯利瓦
Original assignee: Lange Uhren GmbH
Current assignee: Lange Uhren GmbH
Priority date: 2020-12-09
Filing date: 2021-12-07
Publication date: 2022-06-10
Anticipated expiration: 2041-12-07
Also published as: CH718115A2; DE102020132856B3; JP7254885B2; CN114609880B; JP2022091716A

Abstract

The invention relates to a fixedly arranged timepiece, comprising: the gear of the mechanical clockwork can rotate around the axis of the clockwork; the pointer can rotate around the axis of the pointer in front of the dial plate; a timing escapement; a balance wheel with a balance wheel rim, the balance wheel rim having a balance wheel shaft which can be pivoted about a balance wheel axis in an end region, the balance wheel shaft having a pulse roller which supports radially projecting pulse blocks at a radial distance from the balance wheel axis, the pulse blocks being able to engage in a circumferential, radially directed escapement wheel tooth region of an escapement wheel which can rotate about an escapement wheel axis; a release roller concentric at the balance axle; the release roller has a release mass projecting radially at a radial distance from the balance wheel axis, the spring arm of the travel spring projects into a radially encircling release mass region of the release mass and can be moved out of the release mass region by the release mass, the rest mass at the travel spring can be moved out of a radially encircling tooth region of the escape wheel with a coaxial pinion embedded by the mechanical clockwork gear.

Description

Fixedly arranged timepiece

Technical Field

The invention relates to a fixedly arranged timepiece, comprising: a gear of the mechanical clockwork that is rotatable about a clockwork axis; at least one hand which can rotate around a hand axis in front of the dial; chronograph escapement (chronograph striking); a balance wheel with a balance wheel shaft, which is mounted at an end region of the balance wheel shaft with a journal so as to be pivotable about a balance wheel axis and at which a pulse roller is provided, which supports a radially projecting pulse block at a radial distance from the balance wheel axis, which can engage in a circumferential, radially directed escape wheel tooth region of an escape wheel, which escape wheel is mounted so as to be rotatable about an escape wheel axis; a release roller arranged concentrically, directly or indirectly, at the balancing hub; a trip mass which projects radially at a radial distance from the balance wheel axis at the trip roller, wherein the spring arm of the travel spring projects into a radially encircling trip mass region of the trip mass and can be moved out of the trip mass region by the trip mass, and a stationary mass arranged at the travel spring can be moved out of a radially encircling tooth region of the escape wheel, wherein the escape wheel has a coaxial pinion into which the gear wheel of the mechanical spring device engages.

Background

The fixed clock is used as a table clock or a wall clock. In special applications, the fixed timepiece may be a navigation timepiece for sea navigation and must therefore operate very precisely.

In this timepiece, it is known that the clockwork axis and the hand axis of the rotatable wheel of the mechanical clockwork are arranged parallel to each other and the balance wheel shaft is arranged vertically.

Disclosure of Invention

The object of the invention is to provide a fixed timepiece of the type mentioned in the opening paragraph which achieves improved travel results and a longer travel duration of the timepiece.

This object is achieved according to the invention in that the balance wheel axis, the clockwork axis and the pointer axis extend horizontally and the plane of the dial extends vertically, and the escape wheel axis intersects the balance wheel axis at right angles, and the radially encircling tooth area of the escape wheel is an additional axial tooth, which has the same number of teeth as the radially directed escape wheel tooth area, from which the stationary block can be moved out.

A good readability of the timepiece is obtained by the vertical arrangement of the dial.

By the design according to the invention, the balance wheel axis is arranged vertically, so that the friction in the balance wheel bearing is very small, since the balance wheel axis runs in its lower bearing only at one point. In the case of a balance wheel axis extending horizontally, the entire weight of the balance wheel will be exerted on the ring surface in the balance wheel bearing, which will result in a significant increase in the bearing friction.

Furthermore, errors in the centre of gravity of the balance wheel can have a very adverse effect on the travel performance of the timepiece.

The timepiece according to the invention has a high stroke precision and a longer stroke duration, since the friction losses of the timepiece design according to the invention are very small and the error in the center of gravity of the balance wheel can only have a small effect.

Furthermore, the design according to the invention allows a compact construction of the timepiece.

In this case, the lower journal of the balancing axle is preferably mounted in an axial bearing with its end face so as to be rotatable about the balancing axle axis.

A further reduction in the bearing resistance is achieved in that the axial bearing is formed by a top piece.

The lower bearing resistance is also achieved in that the lower journal passes through the bearing opening of the perforated block, which forms the radial bearing.

The embodiment which is realized only in the direction of travel and has low frictional losses is realized in that the radially directed toothing of the escape wheel has a serration, the flank of the serration pointing away from the direction of rotation of the escape wheel has an inclination toward the direction of rotation, and the flank of the serration pointing toward the direction of rotation points radially or has an inclination toward the direction of rotation of the escape wheel.

Likewise, the design which is only realized in the direction of travel and has low frictional losses is realized in that the additional axial toothing of the escape wheel is a sawtooth toothing, the flank of the sawtooth toothing which points away from the direction of rotation of the escape wheel having an inclination towards the direction of rotation, and the flank of the sawtooth toothing which points towards the direction of rotation pointing radially with respect to the plane of the escape wheel or having an inclination towards the direction of rotation of the escape wheel with respect to the plane of the escape wheel.

When the travel spring and the spring arm of the travel spring extend tangentially with respect to the escape wheel, a compact construction of the timepiece results.

This achieves a simple construction of the timepiece, if the spring arm of the travel spring can project with its free end into the trip block region of the trip block and is arranged in a stationary manner with its other end.

The spring arms can be designed as flat spring arms. The release mass of the balance wheel thus firmly takes the spring arm and lifts it up as it swings anticlockwise, until it releases the escape wheel, before which the escape wheel remains fixed by the rest mass. If the balance wheel swings clockwise, the trip block easily overcomes the spring arm.

The spring arm of the travel spring may be a gold spring arm, the spring force of which is preferably adjustable.

Drawings

Embodiments of the invention are illustrated in the drawings and described further below. The figures show:

fig. 1 shows a side view of the balance wheel, the chronograph escapement and the dial of a timepiece;

fig. 2 shows a side view of the balance, the chronograph escapement and the clockwork of the timepiece according to fig. 1;

figure 3 shows an enlarged view of a side view of the balance wheel, chronograph escapement of the timepiece according to figure 1;

fig. 4 shows a bottom view of the balance wheel and the chronograph escapement of the timepiece according to fig. 1;

fig. 5 shows a side view of the axial bearing of the lower journal of the balance wheel shaft of the balance wheel of the timepiece according to fig. 1.

Detailed Description

The illustration of the drawing shows a balancing rim 2 which is firmly connected to a vertically arranged balancing axle 1 by means of radial balancing wheel legs 3.

The balance wheel shaft 1 has an upper bearing journal 4 and a lower bearing journal 5 in the axial end region thereof, by means of which the balance wheel shaft 1 is mounted so as to be pivotable about a balance wheel axis 6.

The upper journal 4 is mounted in a radial bearing, not shown, while the lower journal 5 is mounted in an axial bearing and a radial bearing. The axial bearing is formed here by a top piece 7, on which the lower bearing journal 5 is supported on the end side.

The radial bearing is formed by an open-pored block 8, through the through-hole 9 of which the lower journal 5 passes.

Below the balancing rim 2, a pulse roller 10 is arranged concentrically on the balancing hub 1 and carries a pulse block 11 which projects radially from its circumferential edge.

The impulse block 11 projects into the radially encircling, radially directed escape wheel tooth region of the radial tooth 14 of the escape wheel 13, which is mounted so as to be rotatable about an escape wheel axis 12 which intersects the bearing axis 6 at right angles.

Below the impulse roller 10, a release roller 15 is arranged concentrically on the balance wheel shaft 1 in a rotationally fixed manner, on which a release block 16 projects radially at a radial distance from the balance wheel axis 6.

A gold spring arm 17, which is designed as a flat spring arm, of a travel spring 18 extending tangentially with respect to escape wheel 13 projects with its free end into a radially encircling trip block region of trip block 16. By means of the release mass 16, the free end 22 of the gold spring arm 17 can be lifted from the release mass region once per oscillation of the balance wheel axis 6. The gold spring arm 17 is fixed with its end opposite the free end and facing away from the balance wheel axis 6 to a travel spring 18.

The travel spring 18, which likewise extends tangentially with respect to the escape wheel 13, carries at its free end region a preferably cylindrical stationary block 19, which projects into a radially encircling axial tooth region 20 of a radially encircling axial tooth 21 of the escape wheel 13.

The gold spring arm 17 is supported in the region of its free end 22 on a catch 23 of the travel spring 18, so that when the gold spring arm 17 is moved out of the release block region of the release block 16, the travel spring 18 is pivoted together against its spring force and the stationary block 19 is moved out of the axial tooth region 20 of the axial tooth 21 of the escape wheel 13.

The escape wheel 13 has a pinion 24 arranged concentrically and fixedly, which is in mesh with a first wheel 25 of a plurality of wheels 26 of a mechanical clockwork supported in a rotatable manner about a clockwork axis 36 parallel to the escape wheel axis 12.

By means of the last wheel 27 of the plurality of wheels 26, the hands 28 can be rotatably driven in front of a dial 29, the plane of which extends at right angles to the plane of the balancing rim 2.

The radially directed tooth of the escape wheel 13 is designed as a sawtooth tooth, so that the escape wheel 13 can only travel in one direction of rotation. The flank 30 pointing counter to the direction of rotation 31 has an inclination towards the direction of rotation 31, while the flank 32 pointing towards the direction of rotation 31 has a smaller inclination towards the direction of rotation 31 of the escape wheel 13.

The axial toothing of the escape wheel 13 is also designed as a sawtooth. In this case, the flank 33 pointing counter to the direction of rotation 31 has an inclination toward the direction of rotation 31, while the flank 34 pointing toward the direction of rotation 31 points radially with respect to the plane of the escape wheel 13.

The motion flow is implemented as follows. If the balance rim 2 is swung in the direction of arrow 35, the release block 16 strikes the free end 22 of the gold spring arm 17. Gold spring arm 17 deflects travel spring 18 and stationary block 19 releases escape wheel 13. One of the teeth 14 of escape wheel 13 lands on impulse block 11 and drives balance rim 2. If the balance rim 2 is moved further, the free end 22 of the gold spring arm 17 falls from the impulse block 11, and the rest block 19 stops the escape wheel 13 again.

The balancing rim 2 is free to swing further up to its turning point. On the return path, the balancing rim 2 is virtually free-running. Only the release mass 16 deflects the free end 22 of the gold spring arm 17 and the plurality of wheels 26 do not move. The movement of the hands 28 therefore only takes place during each second half-swing of the balancing rim 2.

List of reference numerals

1 balance wheel axle

2 balance rim

3 balance wheel support

4 upper journal

5 lower journal

6 balance wheel axis

7 top block

8-hole block

9 through hole

10 pulse roller

11 pulse block

12 escape wheel axis

13 escape wheel

14 escape wheel tooth

15 Release roll

16 Release Block

17 gold spring arm

18-stroke spring

19 static block

20 axial tooth area

21 axial tooth

Free end of 22 gold spring arm

23 entrainment member

25 first wheel

26 multiple wheels

27 last wheel

28 hand

29 Dial

30 flank

31 direction of rotation

32 flank

33 flank of tooth

34 flank of tooth

35 arrow head

36 clockwork axis.

Claims

1. A timepiece arranged in a fixed position, the timepiece having: a gear (26) of the mechanical clockwork rotatable about a clockwork axis (36); at least one hand (28) that can be rotated about a hand axis before the dial (29); a timing escapement; a balancing wheel having a balancing wheel rim (2) which has a balancing wheel shaft (1) which is mounted at its end regions with journals (4, 5) so as to be pivotable about a balancing wheel axis (6) and at which a pulse roller (10) is provided which, at a radial distance from the balancing wheel axis (6), carries a radially projecting pulse piece (11) which can engage in the region of an encircling radially directed escape wheel tooth of an escape wheel (13) which is mounted so as to be rotatable about an escape wheel axis (12); a release roller (15) arranged concentrically, directly or indirectly, at the balancing wheel axle (1); a trip block (16) which projects radially at a radial distance from the balance wheel axis (6) at the trip roller, wherein a spring arm of a travel spring (18) projects into a radially encircling trip block region of the trip block (16) and can be moved out of the trip block region by the trip block (16), and a rest block (19) which is arranged at the travel spring (18) can be moved out of a radially encircling tooth region of the escape wheel (13), wherein the escape wheel (13) has a coaxial pinion (24) into which a gear wheel (25) of the mechanical spring device meshes, characterized in that the balance wheel axis (6), the spring device axis and the pointer axis extend horizontally, and the plane of the dial (29) extends vertically, and the escape wheel axis (12) intersects the balance wheel axis (6) at right angles, and the radially encircling tooth area of the escape wheel (13) is an additional axial tooth (21) having the same number of teeth as the radially directed escape wheel tooth area, the stationary block (19) being displaceable out of an axial tooth area (20) of the escape wheel tooth area.

2. Timepiece according to claim 1, wherein the lower journal (5) of the balance wheel shaft (1) is supported with its end side in an axial bearing in a rotatable manner about a balance wheel axis (6).

3. Timepiece according to claim 2, wherein the axial bearing is formed by a top piece (7).

4. Timepiece according to claim 2 or 3, wherein the lower journal (5) passes through a bearing opening (9) of an aperture block (8) forming a radial bearing.

5. Timepiece according to any one of the preceding claims, wherein the radially directed tooth (14) of the escape wheel (13) has a sawtooth whose flank (30) directed away from the direction of rotation (31) of the escape wheel (13) has an inclination towards the direction of rotation (31), and whose flank (32) directed towards the direction of rotation (31) is directed radially or has an inclination towards the direction of rotation (31) of the escape wheel (13).

6. Timepiece according to any one of claims 1 to 4, wherein the additional axial tooth (21) of the escape wheel (13) is a sawtooth tooth, the flank (33) of which pointing away from the direction of rotation (31) of the escape wheel (13) has an inclination towards the direction of rotation (31), and the flank (34) of which pointing towards the direction of rotation (31) points radially with respect to the plane of the escape wheel (13) or has an inclination towards the direction of rotation of the escape wheel with respect to the plane of the escape wheel.

7. Timepiece according to any one of the preceding claims, wherein the travel spring (18) and the spring arm of the travel spring extend tangentially with respect to the escape wheel (13).

8. The timepiece according to any one of the preceding claims, wherein the spring arm of the travel spring (18) can project with its free end (22) into the release block region of the release block (16) and is arranged in a stationary manner with its other end.

9. Timepiece according to any one of the preceding claims, wherein the spring arm of the travel spring (18) is a gold spring arm (17).