Compact instrument hairspring

Abstract

The utility model discloses a compact instrument hairspring, which relates to the technical field of instrument hairsprings and comprises a chassis, the top end of the chassis is movably connected with a movable column, the outer side of the movable column is fixedly connected with a body, the top end of the movable column is movably connected with a cross block, and the top end of the cross block is fixedly connected with a knob. A limiting mechanism is arranged on the inner side of the movable column, and the limiting mechanism is movably connected with the bottom end of the cross block. By means of the limiting mechanism, the rotary knob is pressed downwards, the cross block and the tooth block can be driven to move downwards synchronously, the tooth block is separated from the tooth ring, the movable block is pushed to move downwards, the limiting block moves along the limiting groove, the reset spring is compressed and shortened, the rotary knob is rotated, the movable column is driven to rotate under the action of the cross block, and the movable column is driven to rotate. Therefore, the body is continuously wound on the outer side of the movable column, gaps in the body are reduced, and the compactness is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of instrument hairsprings, in particular to a compact instrument hairspring. Background Art

[0002] Compact instrument hairsprings are a common component in precision instruments. Hairsprings are usually thin, flexible wires that are used to support or suspend other components and play a key role in the operation of the instrument. Compact instrument hairsprings may refer to hairspring designs that are small, compact, but powerful, suitable for instruments or devices with limited space. Such designs need to take into account the strength, stability, and precision of the hairspring to ensure the accuracy and reliability of the instrument.

[0003] Patent document CN106990699B relates to an integrated hairspring, which includes a single strip wound around itself between an inner coil and an outer coil, the strip having geometric features such that when the contraction angle of the hairspring has a value of 360°, there is a constant distance between each coil from the inner coil to the penultimate coil; however, the above structure cannot automatically adjust the compactness of the hairspring, and when the hairspring is adjusted to a compactness, the outer side of the hairspring is not constrained, which easily causes the outer part of the hairspring to become loose, thereby affecting the overall compactness. For this reason, a compact instrument hairspring is needed to solve the existing deficiencies. Utility Model Content

[0004] In order to solve the above problems, the present application provides a compact instrument hairspring, which adopts the following technical solution:

[0005] A compact instrument hairspring comprises a chassis, the top of the chassis is movably connected to a movable column, the outer side of the movable column is fixedly connected to a body, the top of the movable column is movably connected to a cross block, the top of the cross block is fixedly connected to a knob, a limiting mechanism is provided on the inner side of the movable column, and the limiting mechanism is movably connected to the bottom end of the cross block, the top of the chassis is fixedly connected to a limiting frame, the knob is movably connected to the center of the limiting frame, a contraction mechanism is provided on the inner side of the limiting frame, and the contraction mechanism is movably connected to the outer side of the body.

[0006] By adopting the above technical solution, the limiting mechanism includes a gear ring, a gear block, a moving block and a reset spring, the bottom end of the reset spring is fixedly connected to the top of the chassis, and the top end of the reset spring is fixedly connected to the bottom end of the gear block, the gear ring is meshed with the gear block, and the top end of the gear block is fixedly connected to the bottom end of the cross block, and the cross block passes through the gear ring.

[0007] By adopting the above technical solution, the limiting mechanism also includes a jacket, the bottom end of the jacket is fixedly connected to the top of the chassis, the moving block is slidably connected to the inside of the jacket, and the reset spring is located inside the jacket, the gear ring is fixedly connected to the inside of the jacket, and the cross bar passes through the top of the jacket.

[0008] By adopting the above technical solution, a plurality of limit blocks are fixedly connected to the outer side of the moving block, a plurality of limit grooves are provided inside the jacket, and the limit blocks are slidably connected to the inside of the limit grooves respectively.

[0009] By adopting the above technical solution, the jacket is located on the inner side of the movable column, the movable column is located at the bottom end of the center of the limiting frame, and the bottom end of the tooth block conflicts with the top end of the moving block.

[0010] By adopting the above technical solution, the retraction mechanism includes a traction rope, a guide block and a side block, and the traction rope, the guide block and the side block are distributed in a circular array, one end of the traction rope is fixedly connected to one side of the guide block, and the other end of the traction rope is wrapped around the outside of the movable column, and the guide blocks are fixedly connected to the top of the side blocks.

[0011] By adopting the above technical solution, a plurality of movable grooves are opened on the top of the chassis, and the movable grooves are distributed in a circular array, and the bottom ends of the side blocks are movably connected to the inside of the movable grooves.

[0012] By adopting the above technical solution, a plurality of guide grooves are opened on the outer side of the limit frame, the traction ropes are respectively located inside the guide grooves, and the guide blocks are respectively slidably connected to the inside of the guide grooves.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] (1) The utility model provides a limit mechanism, and by pressing the knob downward, the cross block and the tooth block can be driven to move downward synchronously, so that the tooth block is separated from the gear ring, thereby pushing the moving block to move downward, and the limit block moves along the limit groove, so that the return spring is compressed and shortened, thereby turning the knob, and under the action of the cross block, the movable column is driven to rotate, so that the body is continuously wound around the outer side of the movable column, thereby reducing the gap in the body and improving the compactness;

[0015] (2) The utility model provides a retracting mechanism so that, during the rotation of the movable column, the traction rope is continuously wound around the outer side of the movable column, thereby pulling the guide block to move along the guide groove, so that the side block moves along the movable groove and continuously fits the edge of the main body, thereby preventing the edge of the main body from becoming loose, thereby maintaining the compact state of the main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the chassis, body and limit frame structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the limiting mechanism of the utility model;

[0019] Figure 4 This is a schematic diagram of the contraction mechanism structure of the utility model;

[0020] Figure 5 For this utility model Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0021] In the figure: 1. chassis; 2. movable column; 3. main body; 4. cross block; 5. knob; 6. limiting mechanism; 601. gear ring; 602. gear block; 603. moving block; 604. reset spring; 605. jacket; 7. limiting frame; 8. retracting mechanism; 801. traction rope; 802. guide block; 803. side block; 9. limiting block; 10. limiting slot; 11. moving slot; 12. guide slot. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0023] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] like Figure 1-5 As shown, the utility model provides a technical solution: a compact instrument hairspring, including a chassis 1, a movable column 2 is movably connected to the top of the chassis 1, a body 3 is fixedly connected to the outer side of the movable column 2, a cross block 4 is movably connected to the top of the movable column 2, a knob 5 is fixedly connected to the top of the cross block 4, a limiting mechanism 6 is arranged on the inner side of the movable column 2, and the limiting mechanism 6 is movably connected to the bottom end of the cross block 4, a limiting frame 7 is fixedly connected to the top of the chassis 1, the knob 5 is movably connected to the center of the limiting frame 7, a contraction mechanism 8 is arranged on the inner side of the limiting frame 7, and the contraction mechanism 8 is movably connected to the outer side of the body 3.

[0026] First, the knob 5 is pressed downward to move the cross bar downward, thereby triggering the limiting mechanism 6. At this time, the knob 5 is rotated to drive the movable column 2 to rotate, so that the main body 3 is continuously wrapped around the outside of the movable column 2, thereby reducing the gap inside the main body 3 and improving the compactness; and while the knob 5 is rotated, the contraction mechanism 8 is triggered to limit the position of the outer edge of the main body 3, thereby maintaining the compact state of the main body 3.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the limiting mechanism 6 includes a toothed ring 601, a toothed block 602, a moving block 603 and a reset spring 604, the bottom end of the reset spring 604 is fixedly connected to the top of the chassis 1, and the top end of the reset spring 604 is fixedly connected to the bottom end of the toothed block 602, the toothed ring 601 is meshed with the toothed block 602, and the top end of the toothed block 602 is fixedly connected to the bottom end of the cross block 4, and the cross block 4 passes through the toothed ring 601, and the limiting mechanism 6 also includes a jacket 605, the bottom end of the jacket 605 is fixedly connected to the top of the chassis 1, and the moving block 603 is slidably connected to the bottom end of the cross block 4. The jacket 605 is inside the jacket 605, and the reset spring 604 is inside the jacket 605, the gear ring 601 is fixedly connected to the inside of the jacket 605, and the cross bar passes through the top of the jacket 605, and a plurality of limit blocks 9 are fixedly connected to the outside of the moving block 603, and a plurality of limit grooves 10 are provided inside the jacket 605, and the limit blocks 9 are slidably connected to the inside of the limit grooves 10 respectively, and the jacket 605 is located on the inner side of the movable column 2, and the movable column 2 is located at the bottom end of the center of the limit frame 7, and the bottom end of the gear block 602 conflicts with the top end of the moving block 603.

[0028] Pressing the knob 5 downward can drive the cross block 4 and the tooth block 602 to move downward synchronously, so that the tooth block 602 is separated from the tooth ring 601, thereby pushing the movable block 603 to move downward, and the limit block 9 moves along the limit groove 10 to compress and shorten the return spring 604, thereby turning the knob 5, and under the action of the cross block 4, the movable column 2 is driven to rotate, so that the main body 3 is continuously wrapped around the outside of the movable column 2, thereby reducing the gap in the main body 3 and improving the compactness. Conversely, loosening the knob 5, under the action of the return spring 604, the tooth block 602 and the tooth ring 601 are re-engaged, and the movable column 2 cannot rotate.

[0029] like Figure 1 , Figure 2 and Figure 4 As shown, the retraction mechanism 8 includes a traction rope 801, a guide block 802 and a side block 803, and the traction rope 801, the guide block 802 and the side block 803 are all distributed in a circular array, one end of the traction rope 801 is fixedly connected to one side of the guide block 802, and the other end of the traction rope 801 is wrapped around the outside of the movable column 2, the guide blocks 802 are fixedly connected to the top of the side block 803, and the top of the chassis 1 is provided with a plurality of movable grooves 11, and the movable grooves 11 are distributed in a circular array, the bottom ends of the side blocks 803 are movably connected to the inside of the movable grooves 11, and the outside of the limiting frame 7 is provided with a plurality of guide grooves 12, the traction ropes 801 are respectively located in the inside of the guide grooves 12, and the guide blocks 802 are respectively slidably connected to the inside of the guide grooves 12.

[0030] During the rotation of the movable column 2, the traction rope 801 is continuously wrapped around the outer side of the movable column 2, thereby pulling the guide block 802 to move along the guide groove 12, so that the side block 803 moves along the movable groove 11, continuously fitting the edge of the main body 3, avoiding the edge of the main body 3 from being loose, thereby maintaining the compact state of the main body 3.

[0031] Working principle: When in use, first, press the knob 5 downward, which can drive the cross block 4 and the tooth block 602 to move downward synchronously, so that the tooth block 602 is separated from the tooth ring 601, thereby pushing the moving block 603 to move downward, and the limit block 9 moves along the limit groove 10, so that the return spring 604 is compressed and shortened, thereby turning the knob 5, and under the action of the cross block 4, the movable column 2 is driven to rotate, so that the main body 3 is continuously wrapped around the outside of the movable column 2, thereby reducing the gap in the main body 3 and improving the compactness. Conversely, release the knob 5, and under the action of the return spring 604, the tooth block 602 is re-engaged with the tooth ring 601, and the movable column 2 cannot rotate at this time; during the rotation of the movable column 2, the traction rope 801 is continuously wrapped around the outside of the movable column 2, thereby pulling the guide block 802 to move along the guide groove 12, so that the side block 803 moves along the movable groove 11, continuously fitting the edge of the main body 3, avoiding the looseness of the edge of the main body 3, thereby maintaining the compact state of the main body 3.

[0032] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A compact instrument hairspring, comprising a chassis (1), characterized in that: The top of the chassis (1) is movably connected to a movable column (2), the outer side of the movable column (2) is fixedly connected to a body (3), the top of the movable column (2) is movably connected to a cross block (4), the top of the cross block (4) is fixedly connected to a knob (5), a limiting mechanism (6) is provided on the inner side of the movable column (2), and the limiting mechanism (6) is movably connected to the bottom end of the cross block (4), the top of the chassis (1) is fixedly connected to a limiting frame (7), the knob (5) is movably connected to the center of the limiting frame (7), a contraction mechanism (8) is provided on the inner side of the limiting frame (7), and the contraction mechanism (8) is movably connected to the outer side of the body (3).

2. A compact instrument hairspring according to claim 1, characterized in that: The limiting mechanism (6) comprises a toothed ring (601), a toothed block (602), a moving block (603) and a return spring (604); the bottom end of the return spring (604) is fixedly connected to the top end of the chassis (1), and the top end of the return spring (604) is fixedly connected to the bottom end of the toothed block (602); the toothed ring (601) is meshed with the toothed block (602), and the top end of the toothed block (602) is fixedly connected to the bottom end of the cross block (4); and the cross block (4) passes through the toothed ring (601).

3. A compact instrument hairspring according to claim 2, characterized in that: The limiting mechanism (6) also includes a jacket (605), the bottom end of the jacket (605) is fixedly connected to the top end of the chassis (1), the moving block (603) is slidably connected to the inside of the jacket (605), and the return spring (604) is located inside the jacket (605), the gear ring (601) is fixedly connected to the inside of the jacket (605), and a cross bar passes through the top end of the jacket (605).

4. A compact instrument hairspring according to claim 3, characterized in that: The outer side of the moving block (603) is fixedly connected with a plurality of limit blocks (9), the interior of the jacket (605) is provided with a plurality of limit grooves (10), and the limit blocks (9) are slidably connected to the interior of the limit grooves (10), respectively.

5. A compact instrument hairspring according to claim 4, characterized in that: The jacket (605) is located on the inner side of the movable column (2), the movable column (2) is located at the bottom end of the center of the limiting frame (7), and the bottom end of the tooth block (602) is in conflict with the top end of the moving block (603).

6. A compact instrument hairspring according to claim 1, characterized in that: The retracting mechanism (8) comprises a traction rope (801), a guide block (802) and a side block (803); the traction rope (801), the guide block (802) and the side block (803) are all distributed in a circular array; one end of the traction rope (801) is respectively fixedly connected to one side of the guide block (802), and the other end of the traction rope (801) is respectively wound around the outside of the movable column (2); and the guide block (802) is respectively fixedly connected to the top of the side block (803).

7. A compact instrument hairspring according to claim 6, characterized in that: The top of the chassis (1) is provided with a plurality of movable grooves (11), and the movable grooves (11) are distributed in a circular array, and the bottom ends of the side blocks (803) are movably connected to the inside of the movable grooves (11).

8. A compact instrument hairspring according to claim 7, characterized in that: A plurality of guide grooves (12) are provided on the outer side of the limiting frame (7), the traction ropes (801) are respectively located inside the guide grooves (12), and the guide blocks (802) are respectively slidably connected to the inside of the guide grooves (12).

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