Anti-disengaging groove type limiting mechanism of clock minute wheel connecting pipe

Abstract

The utility model provides an anti-disengaging groove type limiting mechanism of a clock minute wheel connecting pipe, which belongs to the technical field of clocks and comprises a clock central shaft, the clock central shaft is sleeved with the minute wheel connecting pipe, a minute wheel is fixedly arranged below the outer side surface of the minute wheel connecting pipe, and a minute hand is sleeved above the outer side surface of the minute wheel connecting pipe. A bearing ring is fixedly arranged below the outer side surface of the clock center shaft, and a plurality of installation grooves are formed in the upper portion of the outer side surface of the clock center shaft. By arranging the bearing ring and the trapezoidal limiting block, when the cannon pinion connecting pipe is connected to the clock center shaft in a sleeving mode, the cannon pinion connecting pipe can extrude the trapezoidal limiting block, so that the trapezoidal limiting block is embedded into the mounting groove till the cannon pinion connecting pipe makes contact with the bearing ring, and at the moment, the horizontal height of the bottom of the trapezoidal limiting block is equal to the horizontal height of the upper surface of the cannon pinion connecting pipe; the elastic force of the elastic piece ejects the trapezoidal limiting block out of the mounting groove, the trapezoidal limiting block limits the cannon pinion connecting pipe, the cannon pinion connecting pipe is prevented from axially moving relative to the clock center shaft, and the precision is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of watchmaking technology, and in particular to an anti-disengagement limiting mechanism for the watch wheel guide tube. Background Technology

[0002] The minute wheel tube is a key component in the core transmission system of a mechanical watch. Its design precision directly affects the accuracy of timekeeping. The minute wheel tube is the central component of the minute wheel, and the minute hand is directly fitted onto it. The side of the tube has annular or flat protrusions that mate with the holes in the main plate to achieve axial fixation. Traditional minute wheel tube structures have the following problems:

[0003] The minute wheel tube is prone to axial movement: Due to the clearance fit between the minute wheel tube and the main plate hole, long-term vibration or external impact can easily cause the minute wheel tube to move axially, affecting the transmission accuracy. Therefore, an anti-disengagement limit mechanism for the minute wheel tube of the watch is designed to solve the above problem. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the above-mentioned background technology, and to propose an anti-disengagement limiting mechanism for the watch wheel guide tube.

[0005] The technical problem to be solved by this utility model is to provide an anti-disengagement limiting mechanism for the minute wheel tube of a watch, which solves the problem of easy axial movement of the minute wheel tube in the prior art, affecting the transmission accuracy.

[0006] This utility model provides an anti-disengagement limiting mechanism for a minute wheel connector of a clock, including a clock center shaft, a minute wheel connector, a minute wheel, and a minute hand. The minute wheel connector is sleeved on the clock center shaft. The minute wheel is fixedly installed below the outer surface of the minute wheel connector. The minute hand is sleeved above the outer surface of the minute wheel connector. A support ring is fixedly installed below the outer surface of the clock center shaft. Multiple mounting grooves are formed above the outer surface of the clock center shaft. Trapezoidal limiting blocks are elastically connected to the mounting grooves through elastic elements.

[0007] Preferably, the trapezoidal limiting block is a right-angled trapezoid with a smaller thickness at the top and a larger thickness at the bottom, and the distance between the bottom surface of the trapezoidal limiting block and the upper surface of the supporting ring is equal to the height of the wheel guide pipe.

[0008] Preferably, when the elastic element is in a naturally elongated state, the upper part of the trapezoidal limiting block is completely embedded in the mounting groove, and the lower part of the trapezoidal limiting block extends out of the mounting groove. When the elastic element is in a maximum compressed state, both the upper and lower parts of the trapezoidal limiting block are embedded in the mounting groove.

[0009] Preferably, the elastic element is an elastic rubber column.

[0010] Preferably, the upper surface of the supporting ring has multiple spherical grooves evenly spaced at the center, and a first ball bearing is rolled in the spherical groove. The bottom surface of the trapezoidal limiting block has an embedding groove, an elastic rubber block, a spherical box, and a second ball bearing. The bottom surface of the trapezoidal limiting block has an embedding groove, and an elastic rubber block is fixedly installed on the top inner side of the embedding groove. A spherical box is fixedly installed on the bottom surface of the elastic rubber block, and a second ball bearing is rolled in the spherical box.

[0011] Preferably, the spherical groove extends through the upper surface of the supporting ring 5, and the top of the first ball extends out of the spherical groove.

[0012] Preferably, the bottom surface of the spherical box is provided with an opening groove, and the second ball extends out of the opening groove, the diameter of the second ball being larger than the diameter of the opening groove.

[0013] Preferably, when the elastic rubber block is not compressed, the bottom horizontal height of the second ball is lower than the bottom horizontal height of the trapezoidal limiting block.

[0014] Compared with the prior art, this utility model has at least the following beneficial effects:

[0015] 1. This utility model, by setting a support ring and a trapezoidal limiting block, allows the sub-wheel connector to press against the trapezoidal limiting block when it is sleeved on the central shaft of the watch. This causes the trapezoidal limiting block to embed itself in the mounting groove until the sub-wheel connector contacts the support ring. At this point, the bottom horizontal height of the trapezoidal limiting block is equal to the upper surface horizontal height of the sub-wheel connector. The elastic force of the elastic element ejects the trapezoidal limiting block from the mounting groove. The trapezoidal limiting block limits the sub-wheel connector, preventing it from moving axially relative to the central shaft of the watch and ensuring accuracy.

[0016] 2. This utility model is equipped with a first ball and a second ball. After the sub-wheel connector is installed, the bottom of the sub-wheel connector is attached to the first ball on the upper surface of the support ring, and the second ball at the bottom of the trapezoidal limiting block is attached to the upper surface of the sub-wheel connector. The rolling of the first ball and the second ball can reduce the friction when the sub-wheel connector rotates, ensuring smooth rotation. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model.

[0019] Figure 2This is a three-dimensional structural disassembly diagram of the present invention.

[0020] Figure 3 This is a bottom view of the transverse cross-section structure of the clock's central axis according to this utility model.

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the central axis of the clock of this utility model.

[0022] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A.

[0023] Figure 6 This utility model Figure 4 Enlarged structural diagram at point B.

[0024] [Figure Labels]

[0025] 1. Clock central shaft; 101. Mounting groove; 2. Minute wheel connector; 3. Minute wheel; 4. Minute hand; 5. Support ring; 501. Spherical groove; 502. First ball bearing; 6. Trapezoidal limit block; 601. Elastic element; 602. Embedded groove; 603. Elastic rubber block; 604. Spherical box; 605. Second ball bearing. Detailed Implementation

[0026] Example:

[0027] like Figures 1-6 As shown, an embodiment of this utility model provides an anti-disengagement limiting mechanism for a minute wheel connector of a clock, including a clock central shaft 1, a minute wheel connector 2, a minute wheel 3, and a minute hand 4. The minute wheel connector 2 is sleeved on the clock central shaft 1. The minute wheel 3 is fixedly installed below the outer surface of the minute wheel connector 2. The minute hand is sleeved above the outer surface of the minute wheel connector 2. A support ring 5 is fixedly installed below the outer surface of the clock central shaft 1. Multiple mounting grooves 101 are formed above the outer surface of the clock central shaft 1. Trapezoidal limiting blocks 6 are elastically connected to the mounting grooves 101 by elastic elements.

[0028] In this embodiment, the trapezoidal limiting block 6 is a right-angled trapezoid with a smaller thickness at the top and a larger thickness at the bottom, and the distance between the bottom surface of the trapezoidal limiting block 6 and the upper surface of the supporting ring 5 is equal to the height of the wheel connecting pipe 2.

[0029] In this embodiment, when the elastic member is in a naturally elongated state, the upper part of the trapezoidal limiting block 6 is completely embedded in the mounting groove 101, and the lower part of the trapezoidal limiting block 6 extends out of the mounting groove 101. When the elastic member is in a maximum compressed state, both the upper and lower parts of the trapezoidal limiting block 6 are embedded in the mounting groove 101, which facilitates the trapezoidal limiting block 6 to retract into the mounting groove 101.

[0030] In this embodiment, the elastic element 601 is an elastic rubber column.

[0031] With the support ring 5 and trapezoidal limiting block 6 provided, when the wheel connector 2 is sleeved on the clock center shaft 1, the wheel connector 2 will squeeze the trapezoidal limiting block 6, causing the trapezoidal limiting block 6 to embed into the mounting groove 101 until the wheel connector 2 contacts the support ring 5. At this time, the bottom horizontal height of the trapezoidal limiting block 6 is equal to the upper surface horizontal height of the wheel connector 2. The elastic element 601 will spring the trapezoidal limiting block 6 out of the mounting groove 101. The trapezoidal limiting block 6 limits the wheel connector 2, preventing the wheel connector 2 from moving axially relative to the clock center shaft 1, thus ensuring accuracy.

[0032] In this embodiment, the upper surface of the supporting ring 5 has multiple spherical grooves 501 evenly spaced at the center. A first ball bearing 502 is rolled inside the spherical groove 501. The bottom surface of the trapezoidal limiting block 6 has an embedding groove 602, an elastic rubber block 603, a spherical box 604, and a second ball bearing 605. The bottom surface of the trapezoidal limiting block 6 has an embedding groove 602. An elastic rubber block 603 is fixedly installed on the top inner side of the embedding groove 602. A spherical box 604 is fixedly installed on the bottom surface of the elastic rubber block 603. A second ball bearing 605 is rolled inside the spherical box 604.

[0033] In this embodiment, the upper part of the spherical groove 501 extends through the upper surface of the support ring 5, and the top of the first ball 502 extends out of the spherical groove 501, so that the first ball 502 can contact the bottom surface of the roller guide tube 2.

[0034] In this embodiment, the bottom surface of the spherical box 604 is provided with an opening groove, and the second ball 605 extends out of the opening groove. The diameter of the second ball 605 is larger than the diameter of the opening groove to prevent the second ball 605 from falling out of the opening groove.

[0035] In this embodiment, when the elastic rubber block 603 is not compressed, the bottom horizontal height of the second ball 605 is lower than the bottom horizontal height of the trapezoidal limiting block 6, which makes it convenient for the second ball 605 to contact the upper surface of the roller guide tube 2 first.

[0036] With the first ball 502 and the second ball 605 installed, after the distribution wheel connector 2 is installed, the bottom of the distribution wheel connector 2 is attached to the first ball 502 on the upper surface of the support ring 5, and the second ball 605 at the bottom of the trapezoidal limit block 6 is attached to the upper surface of the distribution wheel connector 2. The rolling of the first ball 502 and the second ball 605 can reduce the friction when the distribution wheel connector 2 rotates, ensuring smooth rotation.

[0037] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these should also be considered within the scope of protection of this utility model. These will not affect the implementation effect of this utility model or the practicality of the patent.

Claims

1. Anti-escape slot type limiting mechanism for a pinion of a timepiece, characterized in that: The application relates to a clock center shaft (1), a minute wheel connecting pipe (2), a minute wheel (3) and a minute hand (4), wherein the clock center shaft (1) is provided with the minute wheel connecting pipe (2) in a sleeving mode, the outer surface of the minute wheel connecting pipe (2) is fixedly provided with the minute wheel (3) below, the outer surface of the minute wheel connecting pipe (2) is provided with the minute hand in a sleeving mode above, the outer surface of the clock center shaft (1) is fixedly provided with a supporting ring (5) below, and a plurality of mounting grooves (101) are formed in the outer surface of the clock center shaft (1) above.

2. The anti-escape notch limiting mechanism of a timepiece wheel train according to claim 1, characterized in that: The trapezoidal limiting block (6) is in a right trapezoidal shape with a small thickness above and a large thickness below, and the distance between the bottom surface of the trapezoidal limiting block (6) and the upper surface of the supporting ring (5) is equal to the height of the minute wheel connecting pipe (2).

3. The anti-escape notch limiting mechanism of a timepiece wheel train according to claim 2, characterized in that: When the elastic member is in a natural elongation state, the upper part of the trapezoidal limiting block (6) is completely embedded in the mounting groove (101), the lower part of the trapezoidal limiting block (6) is out of the mounting groove (101), and when the elastic member is in a maximum compression state, the upper and lower parts of the trapezoidal limiting block (6) are embedded in the mounting groove (101).

4. The anti-escape notch limiting mechanism of a timepiece wheel train according to claim 3, characterized in that: The elastic member (601) is an elastic rubber column.

5. The anti-backslotted limiting mechanism for a balance cock arbor of a timepiece according to claim 1, characterized in that: A plurality of spherical grooves (501) are equidistantly formed in the upper surface of the supporting ring (5), the first rolling ball (502) is arranged in the spherical groove (501) in a rolling mode, the bottom surface of the trapezoidal limiting block (6) is provided with an embedding groove (602), an elastic rubber block (603), a spherical box (604) and a second rolling ball (605), the bottom surface of the trapezoidal limiting block (6) is provided with the embedding groove (602), the inner top of the embedding groove (602) is fixedly provided with the elastic rubber block (603), the bottom surface of the elastic rubber block (603) is fixedly provided with the spherical box (604), and the second rolling ball (605) is arranged in the spherical box (604) in a rolling mode.

6. The anti-escape notch limiting mechanism of a timepiece wheel arbor according to claim 5, characterized in that: The spherical groove (501) penetrates through the upper surface of the supporting ring (5), and the top of the first rolling ball (502) is out of the spherical groove (501).

7. The anti-escape notch limit mechanism of the arbor of the timepiece wheel, according to claim 6, characterized in that: The bottom surface of the spherical box (604) is provided with an opening groove, and the second rolling ball (605) is out of the opening groove, and the diameter of the second rolling ball (605) is larger than that of the opening groove.

8. The anti-escape notch limit mechanism of the arbor of the timepiece wheel, according to claim 7, characterized in that: When the elastic rubber block (603) is not pressed, the bottom horizontal height of the second rolling ball (605) is lower than that of the trapezoidal limiting block (6).

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