A clutch lever used in electronic watch movement and electronic watch stop second mechanism

Abstract

The present invention discloses a clutch lever applied to an electronic watch movement, comprising a plate-shaped body made of metal, a circular through hole being provided on the plate-shaped body, an elastically deformable welding rod extending upward from one side of the plate-shaped body, an elastic portion extending outward from another position on the same side as the welding rod, a clutch contact portion extending upward from the plate-shaped body on the side opposite to the welding rod, and a toggle portion extending outward from another position on the same side as the clutch contact portion. When the movement time adjustment stem contacts the clutch contact portion, one pole of the movement circuit board input power is connected; when the movement time adjustment stem is disengaged from the clutch contact portion, the toggle portion toggle a transition transmission gear on the electronic watch movement to shift, so that the second hand gear of the electronic watch movement does not form a transmission with the minute hand gear. The present invention realizes that the movement circuit board is powered off in the time adjustment state, improves the reliability of the stop second, prolongs the battery life, and can prevent the time adjustment from damaging the movement.

Description

Technical Field

[0001] The invention relates to the technical field of electronic watch manufacturing, in particular to a clutch lever applied to an electronic watch movement and an electronic watch stop second mechanism. Background Art

[0002] When the electronic watch movement is in the time setting state, the second hand needs to stop rotating to prevent the transmission mechanism from interfering with each other and causing damage. Existing electronic watch movements are often provided with a clutch lever to realize the stop second function.

[0003] For example, on April 9, 2014, a Chinese invention patent application with application number "201410002958.4" and titled "A stop-second device for a clock and watch" was published. The patent application includes a stem, a clutch lever, a positive electrode and a circuit board. One end of the clutch lever is provided with a rotating hole that movably cooperates with the positioning shaft on the main plate, and one end of the clutch lever is also provided with a positioning baffle that cooperates with the stem. The positive electrode is provided with a positive electrode elastic arm, and the other end of the clutch lever is provided with a clutch arm that elastically contacts the positive electrode elastic arm. When the clutch lever is in the running state, the positioning baffle is pushed by the side of the stem shaft to rotate around the rotating hole, so that the clutch arm drives the positive electrode elastic arm to separate from the stop-second end of the circuit board. When the clutch lever is in the time adjustment state, the positive electrode elastic arm returns to contact with the stop-second end of the circuit board through recovery deformation. When this stop-second device is in the time adjustment state, the circuit board is still powered on and still consumes power, which will reduce the service life of the battery. Secondly, the stop-second is achieved by the contact between the positive spring arm and the stop-second end of the circuit board, and the clutch lever does not work. Once the positive spring arm has poor contact with the stop-second end of the circuit board, the stop-second cannot be achieved, and the time adjustment may damage the movement. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a clutch lever applied to an electronic watch movement, which realizes power-off of the movement circuit board in the time adjustment state, effectively improves the reliability of the stop second of the electronic watch movement in the time adjustment state, prolongs the service life of the battery, and can prevent the time adjustment from damaging the movement.

[0005] To achieve the above object, the technical solution of the present invention is: a clutch lever applied to an electronic watch movement, comprising a plate-shaped body made of metal, with a circular through hole provided on the plate-shaped body, and when the clutch lever is installed, the plate-shaped body can be rotatably pivoted on the main plate of the electronic watch movement through the circular through hole;

[0006] An elastically deformable welding rod extends upward from one side of the plate-shaped body. When the clutch rod is installed, the welding rod is welded on the circuit board of the electronic clock movement to form one pole of the circuit board power input;

[0007] The plate-shaped body has an elastic portion extending outwardly at another position on the same side as the welding rod. When the clutch rod is installed, one end of the elastic portion abuts against the main splint.

[0008] A clutch contact portion extends upward from the plate-shaped body at a side opposite to the welding rod, and the clutch contact portion contacts or disengages from one end of a time adjustment stem of an electronic watch movement;

[0009] A toggle portion extends outwardly from the plate-like body at another position on the same side as the clutch contact portion; when the time-adjusting stem contacts the clutch contact portion, one pole of the circuit board input power supply of the electronic watch movement is connected; when the time-adjusting stem disengages from the clutch contact portion, the elastic portion drives the plate-like body to rotate, and the toggle portion toggle a transition transmission gear on the electronic watch movement to shift, so that the second hand gear of the electronic watch movement does not form a transmission with the minute hand gear.

[0010] As a further improvement, a first positioning surface is provided on one side of the toggle part; when the time-adjusting stem contacts the clutch contact part, the first positioning surface abuts against a positioning part on the main plate; a second positioning surface is provided on the other side of the toggle part; when the time-adjusting stem disengages from the clutch contact part, the second positioning surface abuts against another positioning part on the main plate under the action of the elastic part. In this way, the toggle part can be reliably positioned regardless of the running state or the time-adjusting state, which facilitates the accurate shifting and returning of the transition transmission gear and improves the reliability of the action.

[0011] As a further improvement, the toggle part is provided with a toggle hole, the toggle hole is connected and matched with one end of the central axis of the transition transmission gear, and the toggle part toggle the transition transmission gear to shift through the toggle hole.

[0012] Preferably, the shifting hole is a through hole, and the inner peripheral surface of the upper portion of the shifting hole is a conical surface, so as to facilitate the installation and matching of the shifting hole and the central axis of the transition transmission gear.

[0013] As a further improvement, a U-shaped groove is provided between the clutch contact portion and the toggle portion to enhance the elasticity of the clutch contact portion and ensure the stability of the contact state between the clutch contact portion and the outer peripheral surface of the time setting stem.

[0014] Preferably, the clutch contact portion includes an upper vertical section extending upward from the plate-like body, a horizontal section extending horizontally from the upper vertical section, and a lower vertical section extending downward from the horizontal section, and the lower vertical section is in contact with or out of contact with the time setting stem. This structure can further enhance the elastic deformation capacity of the lower vertical section, making it easier to squeeze and contact with the outer peripheral surface of the time setting stem.

[0015] Furthermore, an arc groove is provided on one side of the lower vertical section that contacts and cooperates with the time-adjusting stem.

[0016] Preferably, the plate-like body, the elastic part and the toggle part are on the same plane. Since the welding rod and the clutch contact part of the entire clutch rod are formed by the upward extension of the plate-like body, the welding rod and the clutch contact part are arranged in the same direction, and the plate-like body, the elastic part and the toggle part are on the same plane, a stable support structure is formed. Multiple clutch rods are mixed together without being entangled with each other and will be free to disperse. Therefore, they can be separated one by one using a vibrating screen, which is convenient for automated installation. This improves the assembly efficiency of electronic watch movements and reduces manufacturing costs. It further solves the technical problem that some traditional clutch rods are easy to entangle and cannot be installed automatically.

[0017] It is further preferred that the plate-like body, the elastic portion and the shifting portion have the same thickness and are 0.2 mm to 0.3 mm.

[0018] The new clutch lever in this embodiment has an elastically deformable welding rod extending upward on one side of the plate-like main body. When the clutch lever is installed, the welding rod is welded to the electronic watch movement circuit board to form one pole of the circuit board power input, and the elastic deformation of the welding rod is used to adapt to a certain degree of rotation and displacement of the plate-like main body; the plate-like main body extends a clutch contact portion upward on the side opposite to the welding rod, and the clutch contact portion contacts or disengages from one end of the electronic watch movement time adjustment stem shaft; when the time adjustment stem shaft contacts the clutch contact portion, one pole of the circuit board input power of the electronic watch movement is connected, and it is in the running state. In this way, the clutch lever becomes a link of the power input of the circuit board of the electronic watch movement. Once the time adjustment stem is separated from the clutch contact part, the power supply of the circuit board of the electronic watch movement is immediately disconnected, the motor of the electronic watch movement stops rotating, and the second hand stops rotating, which effectively improves the reliability of the electronic watch movement in the time adjustment state and prolongs the service life of the battery. At the same time, the plate-shaped body extends a toggle part outward at another position on the same side as the clutch contact part. When the time adjustment stem is separated from the clutch contact part, the toggle part toggle a transition transmission gear on the electronic watch movement to shift, so that the second hand gear of the electronic watch movement does not form a transmission with the minute hand gear. In this way, the time adjustment operation can be performed reliably to prevent the time adjustment from damaging the electronic watch movement.

[0019] The present invention also provides a stop-second mechanism for an electronic clock, comprising a main plate, an upper plate, a time adjustment stem, a second hand gear, a minute hand gear, a motor, a circuit board and a battery, wherein the motor is provided with a driving gear, the second hand gear is fixedly connected to the second hand shaft, the minute hand gear is fixedly connected to the minute hand shaft, the circuit board controls the motor to rotate, the time adjustment stem is axially movably mounted on the main plate, the battery is mounted on the main plate, the driving gear drives the second hand gear to rotate via a transmission gear, the second hand gear drives the minute hand gear to rotate via a transition transmission gear, the transition transmission gear is provided with a central shaft, the upper end of the central shaft is matched with a concave hole on the lower end surface of the upper plate; the stop-second mechanism also includes the above-mentioned clutch lever;

[0020] The clutch lever is rotatably pivoted to the main plate through a circular through hole on the plate-shaped body, and one end of the elastic portion on the clutch lever abuts against the main plate;

[0021] The welding rod on the clutch lever is welded on the circuit board to form one pole of the circuit board power input, the time adjustment stem is made of a conductor and is electrically connected to one pole of the battery; the other pole of the battery is electrically connected to the other pole of the circuit board power input through a conductive member, and the lower end of the central shaft is mounted on the clutch lever toggle portion;

[0022] When the electronic clock is in the running state, the outer peripheral surface of one end of the time-adjusting stem is pressed and contacted with the clutch contact part on the clutch lever, so that the elastic part on the clutch lever is in a compressed state; in the time-adjusting state, the time-adjusting stem is pulled out, and one end of the time-adjusting stem is separated from the clutch contact part, and the elastic part on the clutch lever drives the plate-like body of the clutch lever to rotate, and the toggle part on the clutch lever toggle the transition transmission gear to shift, so that the second hand gear does not form a transmission with the minute hand gear.

[0023] As a further improvement, the end of the time adjustment stem that contacts the clutch contact portion is chamfered.

[0024] The stop-second mechanism of the present invention utilizes the above-mentioned clutch lever. When the time adjustment stem is pulled out in the time adjustment state, one end of the time adjustment stem is separated from the clutch contact portion, and the circuit board is powered off, and the seconds are stopped immediately. The stop-second mechanism has good reliability and prolongs the service life of the battery. On the other hand, the shifting portion on the clutch lever shifts the transition transmission gear so that the second hand gear does not form a transmission with the minute hand gear. In this way, the time adjustment operation can be performed reliably, and damage to the electronic watch movement can be prevented. In addition, the above-mentioned feature that the clutch lever will not be entangled with each other is further utilized to further realize the automatic assembly of the electronic watch movement, improve assembly efficiency, and reduce manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front view of the clutch lever of the present invention;

[0026] Figure 2 is a top view of the clutch lever of the present invention;

[0027] Figure 3 is a stereogram of a clutch lever of the present invention;

[0028] Figure 4 It is a three-dimensional diagram of an electronic watch movement provided with the stop-second mechanism of the present invention;

[0029] Figure 5 yes Figure 4 A perspective view of the upper clamping plate, circuit board and battery hidden;

[0030] Figure 6 yes Figure 4A three-dimensional view with the upper plate and transmission parts hidden;

[0031] Figure 7 It is a cross-sectional structural diagram of the welding rod on the clutch rod and the circuit board being welded to each other;

[0032] Figure 8 yes Figure 4 Cross-sectional structural diagram of the transmission mechanism of the electronic watch movement;

[0033] Fig. 9 1. It is a schematic diagram of the contact state between the time setting stem and the clutch contact part on the clutch lever;

[0034] Fig.10 It is a schematic diagram of the disengagement state between the time-adjusting stem and the clutch contact portion on the clutch lever. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] Figures 1 to 10 As shown, a clutch lever used in an electronic watch movement comprises a plate-shaped body 1 made of metal. The clutch lever as a whole is conductive. A circular through hole 11 is provided on the plate-shaped body 1. When the clutch lever is installed, the plate-shaped body 1 can be rotatably pivoted to a column 21 of a main plate 2 of the electronic watch movement through the circular through hole 11.

[0037] A welding rod 12 that can be elastically deformed is extended upward from one side of the plate-shaped body 1. When the clutch rod is installed, the welding rod 12 is welded on the electronic watch movement circuit board 3 to form a power input pole of the circuit board 3;

[0038] The plate-like body 1 has an elastic portion 13 extending outwardly at another position on the same side as the welding rod 12. When the clutch rod is installed, one end of the elastic portion 13 abuts against the main splint 2. The elastic portion 13 is also provided with an abutting protrusion 131.

[0039] The plate-like body 1 has a clutch contact portion 14 extending upwardly on a side opposite to the welding rod 12, and the clutch contact portion 14 contacts or disengages from one end of the time adjustment stem 4 of the electronic watch movement;

[0040] The plate-like body 1 extends outwardly from another position on the same side as the clutch contact portion 14 to form a toggle portion 15, the toggle portion 15 is provided with a toggle hole 151, and one side of the toggle portion 15 is provided with a first positioning surface 152; when the time-adjusting stem 4 contacts the clutch contact portion 14, the circuit board 3 of the electronic watch movement is connected to one pole of the input power supply, and the first positioning surface 152 abuts against a positioning portion 22 on the main plate 2, as shown in FIG. Fig. 9As shown; when the time-adjusting stem 4 is disengaged from the clutch contact portion 14, the elastic portion 13 drives the plate-like body 1 to rotate, and the shifting portion 15 shifts a transition transmission gear on the electronic clock movement through the shifting hole 151, so that the second hand gear of the electronic clock movement does not form a transmission with the minute hand gear.

[0041] The other side of the toggle portion 15 is provided with a second positioning surface 153; when the time setting stem 4 is disengaged from the clutch contact portion 14, the second positioning surface 153 abuts against another positioning portion 23 on the main plate 2 under the action of the elastic portion 13, such as Fig.10 shown.

[0042] The shifting hole 151 is a through hole, and the inner peripheral surface of the upper portion of the shifting hole 151 is a conical surface.

[0043] A U-shaped groove 16 is provided between the clutch contact portion 14 and the toggle portion 15 so that the clutch contact portion 14 has better deformation ability and better elasticity, and can further ensure good conductive contact when contacting the outer peripheral surface of the time adjustment stem 4.

[0044] The clutch contact portion 14 includes an upper vertical section 141 extending upward from the plate-like body 1 , a horizontal section 142 extending horizontally from the upper vertical section 141 , and a lower vertical section 143 extending downward from the horizontal section 142 . The lower vertical section 143 is in contact with or disengaged from the time setting stem 4 .

[0045] An arc groove 144 is formed on one side of the lower vertical section 143 that contacts and cooperates with the time setting stem 4 .

[0046] The plate-shaped body 1 , the elastic portion 13 and the shifting portion 15 are located on the same plane.

[0047] The plate-shaped body 1 , the elastic portion 13 and the shifting portion 15 have the same thickness, which is 0.2 mm to 0.3 mm.

[0048] A stop-second mechanism of an electronic watch of the present invention comprises a main plate 2, an upper plate 2a, a time adjustment stem 4, a second hand gear 5, a minute hand gear 6, a motor 7, a circuit board 3 and a battery 8, wherein the motor 7 is provided with a driving gear 71, the second hand gear 5 is fixedly connected to the second hand shaft 51, the minute hand gear 6 is fixedly connected to the minute hand shaft 61, the circuit board 3 controls the rotation of the motor 7, the time adjustment stem 4 is axially movably mounted on the main plate 2, the battery 8 is mounted on the main plate 2, the driving gear 71 drives the second hand gear 5 to rotate through a transmission gear 72, the second hand gear 5 drives the minute hand gear 6 to rotate through a transition transmission gear 9, the transition transmission gear 9 is provided with a central shaft 91, the upper end of the central shaft 91 is fitted in a concave hole on the lower end surface of the upper plate 2a; the stop-second mechanism also comprises the above-mentioned clutch lever 10;

[0049] The clutch lever 10 is rotatably pivoted to the main plate 2 through a circular through hole 11 on the plate-shaped body 1, and one end of the elastic portion 13 on the clutch lever 10 abuts against the main plate 2;

[0050] The welding rod 12 on the clutch lever 10 is welded on the circuit board 3 to form one pole of the circuit board 3 power input, the time adjustment stem 4 is made of a conductor and is electrically connected to one pole of the battery 8; the other pole of the battery 8 is electrically connected to the other pole of the circuit board 3 power input through the conductive member 81, and the lower end of the central shaft 91 is mounted on the toggle hole 151 of the toggle portion 15 of the clutch lever 10;

[0051] When the electronic clock is in the running state, the outer peripheral surface of one end of the time adjustment stem 4 is pressed and contacted with the clutch contact part 14 on the clutch lever 10, so that the elastic part 13 on the clutch lever 10 is in a compressed state; in the time adjustment state, the time adjustment stem 4 is pulled out, and one end of the time adjustment stem 4 is separated from the clutch contact part 14, and the elastic part 13 on the clutch lever 10 drives the plate-like body 1 on the clutch lever 10 to rotate, and the toggle part 15 on the clutch lever 10 toggle the transition transmission gear 9 to shift, so that the second hand gear 5 does not form a transmission with the minute hand gear 6.

[0052] The end of the time setting stem 4 that contacts the clutch contact portion 14 is provided with a chamfer 41 .

[0053] When this embodiment is used, the time adjustment stem 4 is pulled out, and one end of the time adjustment stem 4 is disengaged from the clutch contact portion 14 on the clutch lever 10, and the circuit board 3 is immediately powered off and stopped; at the same time, the toggle portion 15 on the clutch lever 10 toggle the transition transmission gear 9 to shift, so that the second hand gear 5 does not form a transmission with the minute hand gear 6, and a reliable time adjustment operation can be performed. The time adjustment stem 4 is pressed in, and the outer peripheral surface of one end of the time adjustment stem 4 is pressed and contacted with the clutch contact portion 14 on the clutch lever 10, and the power supply of the circuit board 3 is turned on. At the same time, the toggle portion 15 on the clutch lever 10 drives the transition transmission gear 9 to reset, so that the second hand gear 5 and the minute hand gear 6 form a transmission again, and enter the normal timekeeping state.

[0054] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A clutch lever for an electronic watch movement, comprising a plate-shaped body made of metal, characterized in that: A circular through hole is provided on the plate-like body. When the clutch lever is installed, the plate-like body can be rotatably pivoted on the main plate of the electronic watch movement through the circular through hole. An elastically deformable welding rod extends upward from one side of the plate-shaped body. When the clutch rod is installed, the welding rod is welded on the circuit board of the electronic clock movement to form one pole of the circuit board power input; The plate-shaped body has an elastic portion extending outwardly at another position on the same side as the welding rod. When the clutch rod is installed, one end of the elastic portion abuts against the main splint. A clutch contact portion extends upward from the plate-shaped body at a side opposite to the welding rod, and the clutch contact portion contacts or disengages from one end of a time adjustment stem of an electronic watch movement; A toggle portion extends outwardly from the plate-like body at another position on the same side as the clutch contact portion; when the time-adjusting stem contacts the clutch contact portion, one pole of the circuit board input power supply of the electronic watch movement is connected; when the time-adjusting stem disengages from the clutch contact portion, the elastic portion drives the plate-like body to rotate, and the toggle portion toggle a transition transmission gear on the electronic watch movement to shift, so that the second hand gear of the electronic watch movement does not form a transmission with the minute hand gear.

2. The clutch lever for an electronic watch movement according to claim 1, characterized in that: A first positioning surface is provided on one side of the toggle part; when the time adjusting stem contacts the clutch contact part, the first positioning surface abuts against a positioning part on the main plate; a second positioning surface is provided on the other side of the toggle part; when the time adjusting stem disengages from the clutch contact part, the second positioning surface abuts against another positioning part on the main plate under the action of the elastic part.

3. The clutch lever for an electronic watch movement according to claim 1, characterized in that: The toggle part is provided with a toggle hole, which is connected and matched with one end of the central axis of the transition transmission gear. The toggle part toggle the transition transmission gear to shift through the toggle hole.

4. The clutch lever used in an electronic watch movement according to claim 3, characterized in that: The shifting hole is a through hole, and the inner peripheral surface of the upper part of the shifting hole is a conical surface.

5. The clutch lever for an electronic watch movement according to claim 1, characterized in that: A U-shaped groove is provided between the clutch contact portion and the toggle portion, and the clutch contact portion includes an upper vertical section extending upward from the plate-like body, a horizontal section extending horizontally from the upper vertical section, and a lower vertical section extending downward from the horizontal section, and the lower vertical section is in contact with or disengaged from the time adjustment stem.

6. The clutch lever used in the electronic watch movement according to claim 5, characterized in that: An arc groove is provided on one side of the lower vertical section that contacts and cooperates with the time-adjusting stem.

7. The clutch lever for an electronic watch movement according to claim 1, characterized in that: The plate-shaped body, the elastic portion and the shifting portion are located on the same plane.

8. The clutch lever used in the movement of an electronic watch according to claim 7, characterized in that: The plate-shaped body, the elastic part and the shifting part have the same thickness, which is 0.2 mm to 0.3 mm.

9. A stop-second mechanism for an electronic clock, comprising a main plate, an upper plate, a time adjustment stem, a second hand gear, a minute hand gear, a motor, a circuit board and a battery, wherein the motor is provided with a driving gear, the second hand gear is fixedly connected to the second hand shaft, the minute hand gear is fixedly connected to the minute hand shaft, the circuit board controls the rotation of the motor, the time adjustment stem is axially movably mounted on the main plate, and the battery is mounted on the main plate, wherein the characteristics are as follows: The driving gear drives the second hand gear to rotate through the transmission gear, and the second hand gear drives the minute hand gear to rotate through the transition transmission gear. The transition transmission gear is provided with a central shaft, and the upper end of the central shaft is matched with a concave hole on the lower end surface of the upper splint; the stop second mechanism also includes the clutch lever described in any one of claims 1 to 8; The clutch lever is rotatably pivoted to the main plate through a circular through hole on the plate-shaped body, and one end of the elastic portion on the clutch lever abuts against the main plate; The welding rod on the clutch lever is welded on the circuit board to form one pole of the circuit board power input, the time adjustment stem is made of a conductor and is electrically connected to one pole of the battery; the other pole of the battery is electrically connected to the other pole of the circuit board power input through a conductive member, and the lower end of the central shaft is mounted on the toggle portion of the clutch lever; When the electronic clock is in the running state, the outer peripheral surface of one end of the time-adjusting stem is pressed and contacted with the clutch contact part on the clutch lever, so that the elastic part on the clutch lever is in a compressed state; in the time-adjusting state, the time-adjusting stem is pulled out, and one end of the time-adjusting stem is separated from the clutch contact part, and the elastic part on the clutch lever drives the plate-like body of the clutch lever to rotate, and the toggle part on the clutch lever toggle the transition transmission gear to shift, so that the second hand gear does not form a transmission with the minute hand gear.

10. The stop-second mechanism of an electronic timepiece according to claim 9, characterized in that: The end of the time adjustment stem that contacts the clutch contact portion is chamfered.

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