Double retrograde clock

Abstract

The present invention relates to the technical field of clocks and watches, and in particular, to a double retrograde chronograph clock and watch. The clock and watch case and the clock and watch movement include a sector-shaped dial and a retrograde mechanism, wherein the dial is located above the retrograde mechanism, and the sector arc angle thereof is 120°; the retrograde mechanism includes a disc, a minute hand cam, an hour hand cam, a first rotating shaft, a sleeve, an hour hand sector-shaped transmission wheel, a minute hand sector-shaped transmission wheel, an hour hand gear, a minute hand gear, an hour hand, a minute hand, a spring shaft, and a minute-guide hour transmission mechanism. The double retrograde chronograph clock and watch of the present invention replaces the traditional clock and watch circular timing method, which not only provides people with a novel timing method, but also has a good artistic decorative effect.

Description

Technical Field

[0001] The present invention relates to the technical field of clocks and watches, in particular to a double retrograde chronograph clock and watch. Background Art

[0002] Retrograde is a way of moving the pointer of a mechanical watch. Unlike the traditional pointer that rotates in a circle, the retrograde pointer moves one way. When the indication scale is full, that is, the pointer reaches the end of the sector-shaped dial, the pointer will instantly jump back to the starting point of the scale, and then repeat the new process. The retrograde action of a mechanical watch is achieved through a retrograde mechanism. Its principle is that the cam drives the sector-shaped teeth, and then the sector-shaped teeth drive the circular gear, thereby driving the pointer. In this field, the retrograde mechanism is only used in mechanical watches, and can only realize single-hand retrograde timing. There is no related report on the application of the retrograde mechanism in clocks to achieve double retrograde of the hour hand and minute hand. Summary of the invention

[0003] The object of the present invention is to provide a double retrograde chronograph clock to solve the above technical problems.

[0004] To solve the above problems, the technical solution adopted by the present invention is:

[0005] A double retrograde chronograph clock, comprising a clock housing and a clock movement, wherein the clock movement comprises a sector-shaped dial and a retrograde mechanism, wherein the dial is located above the retrograde mechanism, and the sector arc angle thereof is 120°, and wherein the retrograde mechanism comprises a disc, a minute hand cam, an hour hand cam, a first rotating shaft, a sleeve, an hour hand sector-shaped transmission wheel, a minute hand sector-shaped transmission wheel, an hour hand gear, a minute hand gear, an hour hand, a minute hand, a spring shaft, and a minute-guide hour transmission mechanism;

[0006] The first rotating shaft is assembled at the center of the disc, and the minute hand cam is fixed on the first rotating shaft; the shaft sleeve is sleeved and assembled on the first rotating shaft, and the hour hand cam is fixed on the shaft sleeve; a clockwork gear is fixedly installed on the clockwork shaft; the hour transmission mechanism comprises a second rotating shaft, a first hourly guide gear, a first hourly guide pinion, a second hourly guide gear, a second hourly guide pinion and a transmission gear, wherein the first hourly guide gear, the first hourly guide pinion and the transmission gear are fixed on the second rotating shaft, wherein the transmission gear is constantly meshed with the clockwork gear; the second hourly guide pinion is fixed on the first rotating shaft and constantly meshed with the first hourly guide gear; the second hourly guide gear is fixed on the shaft sleeve and constantly meshed with the first hourly guide pinion;

[0007] The lower ends of the wheel handles of the hour hand sector transmission wheel and the minute hand sector transmission wheel are both mounted on the sector wheel axle, wherein the middle part of the wheel handle of the hour hand sector transmission wheel is provided with an inward hour hand convex angle, and the hour hand convex angle contacts the outer circle of the hour hand cam, and the middle part of the wheel handle of the minute hand sector transmission wheel is provided with an inward minute hand convex angle, and the minute hand convex angle contacts the outer circle of the minute hand cam;

[0008] A fixed shaft for assembling the hour hand gear and the minute hand gear is fixed on the upper part of the disc; the hour hand is fixed on the hour hand gear, and the minute hand is fixed on the minute hand gear; the gear teeth of the hour hand gear are meshed with the gear teeth of the hour hand sector transmission wheel; the gear teeth of the minute hand gear are meshed with the gear teeth of the minute hand sector transmission wheel.

[0009] Preferably, the lower parts of the wheel handles of the hour hand sector-shaped transmission wheel and the minute hand sector-shaped transmission wheel are respectively connected with springs, and the other ends of the springs are fixed on the disc.

[0010] Preferably, an arc-shaped hour hand counterweight is fixed to the end of the hour hand; and an arc-shaped minute hand counterweight is fixed to the end of the minute hand.

[0011] Beneficial effects: Compared with the prior art, the present invention installs minute hand cam and hour hand cam on the first rotating shaft and sleeve of the traditional clock movement that rotates 360 degrees in a circle, respectively, and the spring shaft drives the minute hand cam and hour hand cam through the sub-guide transmission mechanism, and then the minute hand cam and the hour hand cam respectively drive the minute hand fan-shaped transmission wheel and the hour hand fan-shaped transmission wheel, and then the needle fan-shaped transmission wheel and the hour hand fan-shaped transmission wheel respectively drive the minute hand gear and the hour hand gear, thereby controlling the time and minute of the watch hand within 120 degrees. The double retrograde chronograph clock and watch of the present invention replaces the traditional clock and watch circular timing method, which not only provides people with a novel timing method, but also has a good artistic decoration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the watch movement of the present invention;

[0013] Figure 2 It is a schematic diagram of the hour hand indicating the full-scale state of the scale in the present invention;

[0014] Figure 3 A schematic diagram of the hour hand in the present invention jumping back to the starting point of the scale;

[0015] Figure 4 It is a schematic diagram of the minute hand indicating the full-scale state of the scale in the present invention;

[0016] Figure 5 It is a schematic diagram of the state where the minute hand in the present invention jumps back to the starting point of the scale;

[0017] Figure 6 It is a schematic diagram of the assembly of the transmission mechanism during the split-guide operation described in the present invention. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] Example

[0020] Reference Figure 1-Figure 6 The double retrograde chronograph clock and watch described in this embodiment comprises a clock and watch housing and a clock and watch movement. The clock and watch movement comprises a sector-shaped dial 21 and a retrograde mechanism, wherein the dial 21 is located above the retrograde mechanism, and its sector arc angle is 120°. The retrograde mechanism comprises a disc 22, a minute hand cam 12, an hour hand cam 2, a first rotating shaft 11, a sleeve 1, an hour hand sector transmission wheel 4, a minute hand sector transmission wheel 14, an hour hand gear 5, a minute hand gear 15, an hour hand 6, a minute hand 16, a spring shaft 9, a sub-guide hour transmission mechanism and a spring 8.

[0021] The first rotating shaft 11 is assembled at the center of the disc 22, and the minute hand cam 12 is fixed on the first rotating shaft 11; the sleeve 1 is sleeved and assembled on the first rotating shaft 11, and the hour hand cam 2 is fixed on the sleeve 1; the clockwork shaft 9 is fixedly mounted with a clockwork gear 3.

[0022] like Figure 6 As shown, the transmission mechanism during the guide time includes a second rotating shaft 13, a first guide gear 13A, a first guide pinion 13D, a second guide gear 13B, a second guide pinion 13C and a transmission gear 13E, wherein the first guide gear 13A, the first guide pinion 13D and the transmission gear 13E are fixed on the second rotating shaft 13, wherein the transmission gear 13E is constantly meshed with the clockwork gear 3; the second guide pinion 13C is fixed on the first rotating shaft 11 and is constantly meshed with the first guide gear 13A; the second guide gear 13B is fixed on the sleeve 1 and is constantly meshed with the first guide pinion 13D.

[0023] The lower ends of the wheel handles of the hour hand fan-shaped transmission wheel 4 and the minute hand fan-shaped transmission wheel 14 are both assembled on the fan-shaped wheel axle 10, wherein the middle part of the wheel handle of the hour hand fan-shaped transmission wheel 4 is provided with an inward hour hand convex angle A, and the hour hand convex angle A contacts the outer circle of the hour hand cam 2, and the middle part of the wheel handle of the minute hand fan-shaped transmission wheel 14 is provided with an inward minute hand convex angle B, and the minute hand convex angle B contacts the outer circle of the minute hand cam 12; the lower parts of the wheel handles of the hour hand fan-shaped transmission wheel 4 and the minute hand fan-shaped transmission wheel 14 are respectively connected with springs 8, and the other ends of the springs 8 are fixed on the disc 22.

[0024] A fixed shaft for assembling the hour hand gear 5 and the minute hand gear 15 is fixed to the upper part of the disc 22; the hour hand 6 is fixed on the hour hand gear 5, and an arc-shaped hour hand counterweight 7 is fixed to the end thereof; the minute hand 16 is fixed on the minute hand gear 15, and an arc-shaped minute hand counterweight 17 is fixed to the end thereof; the teeth of the hour hand gear 5 are meshed with the teeth of the hour hand sector transmission wheel 4; the teeth of the minute hand gear 15 are meshed with the teeth of the minute hand sector transmission wheel 14.

[0025] In the retrograde mechanism of the present invention, the main function of the two cams is to complete various complex movements according to the working requirements. The two sector-shaped transmission wheels slide at the highest points of the two cams respectively. The circumference of the cam controls the sector-shaped transmission wheel to cycle 120°, and the sector-shaped transmission wheel drives the pointer gear to move 120°. 13 points should be drawn in the 120° sector-shaped dial, and 0 o'clock and 12 o'clock are the overlapping points.

[0026] The specific working process of the double retrograde chronograph clock and watch of the present invention is briefly described as follows:

[0027] 1. The transmission process of the hour hand transmission mechanism: the spring shaft 9 drives the spring gear 3, the spring gear 3 drives the transmission gear 13E, the transmission gear 13E drives the second rotating shaft 13, the second rotating shaft 13 drives the first hour hand gear 13A and the first hour hand gear 13D; the first hour hand gear 13A drives the second hour hand gear 13C, the second hour hand gear 13C drives the first rotating shaft 11, and then drives the minute hand cam 12; the first hour hand gear 13D drives the second hour hand gear 13B, the second hour hand gear 13B drives the shaft sleeve 1 to rotate, and the shaft sleeve 1 drives the hour hand cam 2.

[0028] 2. Hour hand: The hour hand cam 2 drives the hour hand convex corner A of the hour hand sector transmission wheel 4 to slide on the outer circle of the hour hand cam 2, and the hour hand sector transmission wheel 4 drives the hour hand gear 5 to rotate, thereby driving the hour hand 6 to rotate. Since the arc angle of the hour hand cam 2 from the highest point to the lowest point is 120°, the hour hand sector transmission wheel 4 slides on the hour hand cam 2 to the highest point at 120°, driving the hour hand gear 5 to rotate, and the hour hand gear 5 drives the hour hand 6 to 12 o'clock (see Figure 2 Since the hour hand cam 2 rotates 360° along with the shaft sleeve 1, when the hour hand 6 turns to the end of the sector dial at 12 o'clock, the hour hand cam 2 continues to rotate and instantly returns to the lowest point from the highest point. The hour hand convex angle A of the hour hand sector transmission wheel 4 also slides to the lowest point, thereby driving the hour hand gear 5 to rotate, and the hour hand gear 5 drives the hour hand 6 to instantly return to the zero point (see Figure 3 ).

[0029] 3. Minute hand: The minute hand cam 12 drives the minute hand convex corner B of the minute hand sector transmission wheel 14 to slide on the outer circle of the minute hand cam 12, and the minute hand sector transmission wheel 14 drives the minute hand gear 15 to rotate, thereby driving the minute hand 16 to rotate. Since the arc angle of the minute hand cam 12 from the highest point to the lowest point is 120°, the minute hand sector transmission wheel 14 is 120° when it slides on the minute hand cam 12 to the highest point, driving the minute hand gear 15 to rotate, and the minute hand gear 15 drives the minute hand 16 to the end of the sector dial (see Figure 4Since the minute hand cam 12 rotates 360° along with the first rotating shaft 11, when the minute hand 16 rotates to the end of the sector-shaped dial, the minute hand cam 12 continues to rotate and instantly returns to the lowest point from the highest point. At the same time, the minute hand convex angle B of the minute hand sector-shaped transmission wheel 14 also slides to the lowest point, thereby driving the minute hand gear 15 to rotate, and the minute hand gear 15 drives the minute hand 16 to instantly return to the zero point (see Figure 5 ).

[0030] The above shows and describes the basic principles, main features and technical effects of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments are only used to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the claims and their equivalents.

Claims

1. A double retrograde chronograph watch, comprising a watch case and a watch movement, wherein the watch movement comprises a sector-shaped dial (21) and a retrograde mechanism, wherein the dial (21) is located above the retrograde mechanism, and the sector arc angle is 120°, and wherein: The retrograde mechanism comprises a disc (22), a minute hand cam (12), an hour hand cam (2), a first rotating shaft (11), a sleeve (1), an hour hand sector transmission wheel (4), a minute hand sector transmission wheel (14), an hour hand gear (5), a minute hand gear (15), an hour hand (6), a minute hand (16), a spring shaft (9), and a minute guide hour transmission mechanism; The first rotating shaft (11) is assembled at the center of the disc (22), and the minute hand cam (12) is fixed on the first rotating shaft (11); the shaft sleeve (1) is sleeved and assembled on the first rotating shaft (11), and the hour hand cam (2) is fixed on the shaft sleeve (1); a spring gear (3) is fixedly mounted on the spring shaft (9); the hour transmission mechanism comprises a second rotating shaft (13), a first large small gear (13A), a first small small gear (13D), a second large small gear (13B), a second small small gear (13C), a second large small gear (13D), a second small small gear (13D), a second large small gear (13B), a second small small gear (13D), a second large small gear (13B), a second small small gear (13D), a second large small gear (13D), a second small small gear (13D), a second large small gear (13B), a first small small gear (13D), a second large small gear (13B), a first small small gear (13D), a second large small gear (13D), a first small small gear (13D), a second large small gear (13B), a first small small gear (13D), a first large small gear (13D), a second small small gear (13D), a first large small gear (13B ... first large small gear (13D), a second small small gear (13D), a first large small gear (13B), a first small small gear (13D), a first large small gear (13D), a second small small gear (13D), a first large small gear (13B), a first small small gear (13D), a first large small gear (13D), a first small small gear (13D), a first The first guide gear (13A), the first guide pinion (13D) and the transmission gear (13E) are fixed on the second rotating shaft (13), wherein the transmission gear (13E) is constantly meshed with the clockwork gear (3); the second guide pinion (13C) is fixed on the first rotating shaft (11) and is constantly meshed with the first guide gear (13A); the second guide gear (13B) is fixed on the shaft sleeve (1) and is constantly meshed with the first guide pinion (13D); The lower ends of the wheel handles of the hour hand fan-shaped transmission wheel (4) and the minute hand fan-shaped transmission wheel (14) are both mounted on the fan-shaped wheel shaft (10), wherein the middle part of the wheel handle of the hour hand fan-shaped transmission wheel (4) is provided with an inward hour hand convex angle (A), and the hour hand convex angle (A) contacts the outer circle of the hour hand cam (2), and the middle part of the wheel handle of the minute hand fan-shaped transmission wheel (14) is provided with an inward minute hand convex angle (B), and the minute hand convex angle (B) contacts the outer circle of the minute hand cam (12); A fixed shaft for assembling the hour hand gear (5) and the minute hand gear (15) is fixed on the upper part of the disc (22); the hour hand (6) is fixed on the hour hand gear (5), and the minute hand (16) is fixed on the minute hand gear (15); the gear teeth of the hour hand gear (5) mesh with the gear teeth of the hour hand sector transmission wheel (4); the gear teeth of the minute hand gear (15) mesh with the gear teeth of the minute hand sector transmission wheel (14); The lower parts of the wheel handles of the hour hand sector-shaped transmission wheel (4) and the minute hand sector-shaped transmission wheel (14) are respectively connected with springs (8), and the other ends of the springs (8) are fixed on the disc (22); An arc-shaped hour hand counterweight (7) is fixed to the end of the hour hand (6); and an arc-shaped minute hand counterweight (17) is fixed to the end of the minute hand (16).

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