Optical fiber cutting knife

Abstract

The invention discloses an optical fiber cutting knife which comprises a shell, a knife containing groove is formed in one side of the shell, a knife rest is slidably installed in the knife containing groove, a cutting blade is fixedly installed on the knife rest, a gland is rotatably installed on one side of the knife containing groove, a gland rotating shaft is connected with a first connecting rod, and the end, away from the gland rotating shaft, of the first connecting rod abuts against the knife rest. A driving spring is installed at the end, away from the first connecting rod, of the tool rest and abuts against the side wall of the tool containing groove, self-locking parts are installed on the shell and the tool rest, the tool rest slides to the locking position when the self-locking parts are away from the first connecting rod, unlocking parts are installed at the ends, away from the rotating shaft, of the shell and the gland, and a driving hammer is slidably installed on the gland. Through linkage of the gland and the tool rest, energy storage is performed on the driving spring in the gland opening process, locking is performed through the self-locking part, and the driving spring releases elastic potential energy at the moment when the gland is closed, so that the cutting blade quickly cuts the optical fiber, the trouble of sliding the tool is reduced, and use is facilitated.

Description

Technical Field

[0001] This invention belongs to the field of fiber optic cleaver technology and relates to a fiber optic cleaver. Background Technology

[0002] A fiber optic cleaver is a tool used to cut optical fibers. The fiber cut by the cleaver has a smooth cross-section, facilitating subsequent fusion splicing. The cleaver mainly consists of a fiber clamp, a cleaver, and a hammer. The fiber is fixed to the cleaver by the clamp, the cleaver slides across the bottom of the fiber to create a cut, and the hammer falls to break the fiber.

[0003] The fiber optic cleaver requires sliding the blade and operating the hammer to drop during use, which is rather cumbersome. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a fiber optic cleaver, which effectively solves the issues in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A fiber optic cleaver, comprising:

[0007] A housing, on which a clamp is mounted;

[0008] A tool slot is located on the side of the housing away from the fixture.

[0009] A tool holder, which is slidably mounted in the tool slot;

[0010] A cutting blade, which is fixedly mounted on the blade holder;

[0011] A pressure cap, which is rotatably mounted on one side of the knife slot;

[0012] The first connecting rod has its first end fixedly connected to the rotating shaft of the pressure cap, and its second end abutting against the tool holder;

[0013] A drive spring is installed at the end of the tool holder away from the first connecting rod, and the drive spring abuts against the side wall of the tool slot;

[0014] A self-locking part is installed on the housing and the tool holder, and the tool holder is locked when it slides to a position where the self-locking part is away from the first connecting rod;

[0015] The unlocking part is installed at the end of the housing and the pressure cover away from the rotating shaft;

[0016] A hammer, which is slidably mounted on the pressure cap.

[0017] Optionally, it also includes:

[0018] A first return spring is disposed between the hammer and the pressure plate;

[0019] A wedge block, which is slidably mounted on the pressure cap, with its inclined surface conforming to the top of the hammer;

[0020] The second link, the first end of the second link being fixedly connected to the wedge block;

[0021] The third link is rotatably mounted on the housing near the first link at its middle part, with the first end of the third link abutting against the second end of the second link, and the second end of the third link located in the knife slot.

[0022] Optionally, a second return spring is provided between the third link and the housing.

[0023] Optionally, after the third link is reset under the drive of the second reset spring, the first end of the third link is located at the position of the cover rotation axis.

[0024] Optionally, the self-locking part includes a first pin slidably installed inside the tool holder, and a third return spring is provided between the first pin and the tool holder. The unlocking part includes a second pin slidably installed in the housing. When the tool holder slides to a side away from the rotating shaft of the pressure cap, the first pin and the second pin are coaxial.

[0025] Optionally, the upper end of the first pin is a spherical end.

[0026] Optionally, a limiting piece is fixedly connected to the upper end of the second pin.

[0027] Optionally, a cylindrical hole is provided at the bottom of the tool holder, and the drive spring is inserted and installed in the cylindrical hole.

[0028] Optionally, rectangular grooves are provided on both sides of the pressure cap, and a pressure block is slidably installed in the rectangular groove. A clamping groove is provided on the side of the pressure block, and a spring is provided between the pressure block and the rectangular groove.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. A first connecting rod is provided at the position of the rotating shaft of the pressure cover. The end of the first connecting rod abuts against the tool holder. The tool holder abuts against the first connecting rod by the elastic force of the drive spring. When the pressure cover is opened, the first connecting rod rotates accordingly. The end of the first connecting rod pushes the tool holder to slide and compresses the drive spring. When the tool holder slides to the self-locking part position, the self-locking part locks the position of the tool holder. After the optical fiber is placed, the pressure cover is pressed down. The pressure cover contacts the unlocking part, the self-locking part unlocks, and the tool holder resets under the action of the drive spring to cut the optical fiber. Then, the optical fiber is broken by hammering. In this way, the pressure cover and the tool holder are linked. During the opening of the pressure cover, the drive spring is charged with energy and locked by the self-locking part. At the moment the pressure cover is closed, the drive spring releases elastic potential energy, so that the cutting blade quickly cuts through the optical fiber, reducing the trouble of sliding the tool twice and making it easier to use.

[0031] 2. A third link is provided on the housing, with the second end of the third link located in the tool slot. When the tool post is reset under the action of the drive spring, it strikes the third link, causing the third link to rotate. The upper end of the third link strikes the second link, which pushes the wedge block to slide. The inclined surface of the wedge block pushes the hammer to slide and strike. By setting the wedge block, the second link, and the third link, the striking action is automatically completed after the tool post slides to the end and strikes the third link, which further facilitates use. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0033] Figure 2 This is a structural schematic diagram from another perspective of an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the hammer part according to an embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of the pressing block portion according to an embodiment of the present invention.

[0036] Reference numerals: 1. Housing; 11. Clamp; 12. Tool slot; 21. Tool holder; 22. Cutting blade; 3. Pressure cap; 31. Pressure block; 32. Clamping groove; 41. First connecting rod; 42. Drive spring; 51. Self-locking part; 511. First pin; 512. Third return spring; 52. Unlocking part; 521. Second pin; 522. Limiting piece; 6. Hammer; 61. First return spring; 62. Wedge block; 63. Second connecting rod; 64. Third connecting rod; 65. Second return spring. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1 to 4 This is an example of an optical fiber cleaver disclosed in an embodiment of the present invention. Please refer to [link / reference]. Figures 1 to 2 The device includes a housing 1, on which a clamp 11 is mounted. A blade holder 12 is provided on the side of the housing 1 away from the clamp 11. A blade holder 21 is slidably mounted in the blade holder 12. A cutting blade 22 is fixedly mounted on the blade holder 21. A pressure cover 3 is rotatably mounted on one side of the blade holder 12. A first connecting rod 41 is fixedly connected to the rotating shaft of the pressure cover 3. The end of the first connecting rod 41 away from the rotating shaft of the pressure cover 3 abuts against the blade holder 21. A drive spring 42 is mounted on the end of the blade holder 21 away from the first connecting rod 41. The drive spring 42 abuts against the side wall of the blade holder 12. A self-locking part 51 is installed on the housing 1 and the blade holder 21. When the blade holder 21 slides to the self-locking part 51 away from the first connecting rod 41, it is locked. An unlocking part 52 is installed on the end of the housing 1 and the pressure cover 3 away from the rotating shaft. A hammer 6 is slidably mounted on the pressure cover 3.

[0039] Specifically, a first connecting rod 41 is provided at the rotation axis position of the pressure cover 3. The end of the first connecting rod 41 abuts against the tool holder 21, and the tool holder 21 is elastically abutted against the first connecting rod 41 by the drive spring 42. When the pressure cover 3 is opened, the first connecting rod 41 rotates accordingly, and the end of the first connecting rod 41 pushes the tool holder 21 to slide and compresses the drive spring 42. When the tool holder 21 slides to the self-locking part 51 position, the self-locking part 51 locks the tool holder 21 in position. After the optical fiber is placed, the pressure cover 3 is pressed down, the pressure cover 3 contacts the unlocking part 52, the self-locking part 51 unlocks, the tool holder 21 resets under the action of the drive spring 42, and the optical fiber is cut. Then, the optical fiber is broken by the hammer 6.

[0040] In this way, the pressure cover 3 is linked with the tool holder 21, and the drive spring 42 stores energy during the opening of the pressure cover 3 and is locked by the self-locking part 51. At the moment the pressure cover 3 is closed, the drive spring 42 releases its elastic potential energy, so that the cutting blade 22 quickly glides across the optical fiber, reducing the trouble of sliding the tool twice and making it easier to use.

[0041] In some feasible embodiments, the housing 1 is a rectangular metal housing, and the clamp 11 is existing technology and will not be described in detail here. The blade holder 12 is a rectangular groove. To facilitate sliding, a slide rail is installed between the blade holder 12 and the bottom of the blade holder 21. The bottom of the blade holder 21 is set as a rectangular block, and the two sides of the rectangular block are attached to the two sides of the blade holder 12. A semi-circular mounting bracket is fixedly installed on the upper end of the rectangular block, and the cutting blade 22 is installed on the mounting bracket by bolts.

[0042] A rectangular block is bolted to the end of the tool holder 12 away from the rotating shaft of the pressure cap 3. The self-locking part 51 includes a through hole in the housing 1 and the tool holder 21. A cylindrical pin is installed in the through hole of the housing 1, and a spring is connected to the cylindrical pin. The end of the tool holder 21 is set with a slope. During the sliding of the tool holder 21, the slope pushes the cylindrical pin upward until the cylindrical pin is aligned with the through hole on the tool holder 21, and then the cylindrical pin enters the through hole. The unlocking part 52 includes a strong magnet with the upper end of the cylindrical pin and the end of the pressure cap 3. After the pressure cap 3 is pressed down, the strong magnets attract each other, and the cylindrical pin moves upward and disengages from the tool holder 21.

[0043] The pressure cover 3 is a rectangular plate. A rectangular hole is provided on the side of the tool holder 12 near the rotating shaft of the pressure cover 3. The first connecting rod 41 is a rectangular rod, fixedly installed on the pressure cover 3. The first connecting rod 41 passes through the rectangular hole and abuts against the tool holder 21. When the pressure cover 3 is rotated to be perpendicular to the upper surface of the housing 1, the first connecting rod 41 pushes the tool holder 21 to the locking position of the self-locking part 51. When the pressure cover 3 is pressed down, the first connecting rod 41 disengages from the tool holder 21 to avoid interference with the springback of the tool holder 21.

[0044] The hammer 6 is designed in an inverted U-shape, and the pressure cap 3 has a through hole at the corresponding position. The hammer 6 can be slidably installed in the through hole. After the pressure cap 3 is pressed down, the hammer 6 is pressed to complete the striking.

[0045] As one specific embodiment of the fiber optic cleaver provided in the application, please refer to Figure 3 It also includes a first return spring 61, which is disposed between the hammer 6 and the pressure plate 3. The pressure plate 3 is slidably mounted with a wedge block 62. The inclined surface of the wedge block 62 is in contact with the top of the hammer 6. The wedge block 62 is fixedly connected to a second connecting rod 63. A third connecting rod 64 is disposed at the end of the second connecting rod 63 away from the wedge block 62. The middle part of the third connecting rod 64 is rotatably mounted on the side of the housing 1 near the first connecting rod 41. The first end of the third connecting rod 64 abuts against the second end of the second connecting rod 63. The second end of the third connecting rod 64 is located in the knife groove 12.

[0046] Overall, a third link 64 is provided on the housing 1, and the second end of the third link 64 is located in the tool slot 12. When the tool holder 21 is reset under the action of the drive spring 42, the tool holder 21 hits the third link 64 to make the third link 64 rotate. The upper end of the third link 64 hits the second link 63, and the second link 63 pushes the wedge block 62 to slide. The inclined surface of the wedge block 62 pushes the hammer 6 to slide and strike.

[0047] By setting up wedge block 62, second link 63 and third link 64, the tool holder 21 slides to the end and hits the third link 64 to automatically complete the striking action, which further facilitates use.

[0048] Furthermore, a second return spring 65 is provided between the third link 64 and the housing 1.

[0049] It should be understood that by setting the second return spring 65, the third link 64 can be automatically reset after the tool holder 21 slides.

[0050] Furthermore, after the third link 64 is reset under the drive of the second reset spring 65, the first end of the third link 64 is located at the position of the rotating shaft of the pressure cover 3.

[0051] It should be understood that during the pressing down of the pressure cap 3, the end of the second link 63 moves around the rotation axis following the pressure cap 3. The first end of the third link 64 is located at the rotation axis position of the pressure cap 3 so that the second link 63 is not affected by the third link 64 during rotation.

[0052] In some feasible configurations, the upper end of the hammer 6 is triangular to facilitate the wedge block 62 pushing the hammer 6, and the first return spring 61 is fixedly connected to the four apex corners of the hammer 6. For ease of installation, a cover body is bolted to the upper end of the pressure cap 3, and the first return spring 61 is fixed to the cover body. A rectangular groove is provided in the middle of the pressure cap 3 for the sliding of the second connecting rod 63, and the upper side of the rectangular groove is closed after the cover body is installed.

[0053] The third link 64 is a bent rod, and the second return spring 65 is a torsion spring installed at the rotation axis position of the third link 64. The third link 64 is keyed to the rotation axis, and the second return spring 65 is sleeved on one end of the rotation axis. The two ends of the second return spring 65 are respectively connected to the rotation axis and the housing 1.

[0054] As a specific embodiment of the fiber optic cleaver provided in the application, the self-locking part 51 includes a first pin 511 that is slidably installed in the cleaver holder 21, and a third return spring 512 is provided between the first pin 511 and the cleaver holder 21. The unlocking part 52 includes a second pin 521 that is slidably installed in the housing 1. When the cleaver holder 21 slides to the side away from the rotating shaft of the pressure cover 3, the first pin 511 and the second pin 521 are coaxial.

[0055] It should be understood that by setting the first pin 511 and the second pin 521, when the pressure cap 3 is pressed down, the second pin 521 is pressed down, the second pin 521 presses down the first pin 511, the first pin 511 disengages from the housing 1, and the tool holder 21 is released.

[0056] Furthermore, the upper end of the first pin 511 is a spherical end.

[0057] It should be understood that by setting the spherical end, it is easy for the first pin 511 to detach from the housing 1.

[0058] In some feasible embodiments, through holes are provided on the housing 1 and the tool holder 21. The first pin 511, the second pin 521, and the third return spring 512 are installed in the through holes. To reduce the problem of excessive pressing of the second pin 521, a limiting piece 522 is fixedly connected to the upper end of the second pin 521. The length of the second pin 521 should be the same as the length of the through hole on the housing 1. After pressing, the first pin 511 can be disengaged from the housing 1. When the tool holder 21 is pushed to compress the drive spring 42, the first pin 511 slides to the position of the second pin 521 and enters the through hole on the housing 1 through the third return spring 512, thus lifting the second pin 521.

[0059] As another specific embodiment of the fiber optic cleaver provided in the application, the bottom of the cleaver holder 21 has a cylindrical hole, and the drive spring 42 is inserted and installed in the cylindrical hole.

[0060] It should be understood that by inserting the drive spring 42 into the cylindrical hole, the space occupied by the drive spring 42 is reduced, the size of the fiber optic cleaver is reduced, and it is easier to carry.

[0061] As another specific embodiment of the fiber optic cleaver provided in the application, please refer to [link / reference needed]. Figure 4 The pressure cap 3 has rectangular grooves on both sides, and a pressure block 31 is slidably installed in the rectangular groove. The side of the pressure block 31 is provided with a clamping groove 32, and a spring is provided between the pressure block 31 and the rectangular groove.

[0062] Depending on the specific application scenario, the pressure cap 3 compresses the optical fiber located on the housing 1 during the pressing process, facilitating cutting. By setting a sliding pressure block 31, the optical fiber is compressed before the pressure cap 3 triggers the drive spring 42, facilitating cutting.

[0063] In some feasible methods, the clamping block 31 is rectangular, and the clamping block 31 is provided with a clamping groove 32 corresponding to the position of the housing 1 for accommodating optical fibers. A cover plate connected by bolts is provided on the outside of the rectangular groove.

[0064] In some feasible configurations, the pressure block 31 is set as an arc-shaped block, and the clamping groove 32 is set as a corresponding arc-shaped groove. The arc shape is circular with the rotation axis position of the pressure cover 3 as the reference point. The pressure cover 3 is rotatably connected. By setting the arc-shaped groove and the arc-shaped block, after the pressure block 31 contacts the housing 1, the arc shape allows the pressure cover 3 to continue pressing down without affecting the position of the pressure block 31, thus reducing the impact on the optical fiber.

[0065] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An optical fiber cleaver characterized by comprising: The utility model relates to a cutting device, including: The shell (1) is installed on the clamp (11); The knife groove (12) is located on the shell (1) far from the clamp (11) side; The tool rest (21) is slidably installed in the knife groove (12); The cutting blade (22) is fixedly installed on the tool rest (21); The gland (3) is rotatably installed on one side of the knife groove (12); The first connecting rod (41) first end is fixedly connected on the rotating shaft of the gland (3), and the second end of the first connecting rod (41) is located on the tool rest (21); The drive spring (42) is installed on the tool rest (21) far from the first connecting rod (41) one end, and the drive spring (42) is located on the side wall of the knife groove (12); The self-locking portion (51) is installed on the shell (1) and the tool rest (21), and when the tool rest (21) slides to the self-locking portion (51) far from the first connecting rod (41), the locking position is locked; The unlocking portion (52) is installed on the shell (1) and the gland (3) far from the rotating shaft one end; The hammer (6) is slidably installed on the gland (3).

2. The fiber cleaver of claim 1, wherein Further including: The first reset spring (61) is arranged between the hammer (6) and the gland (3); The wedge block (62) is slidably installed on the gland (3), and the inclined surface of the wedge block (62) is attached to the top of the hammer (6); The second connecting rod (63) first end is fixedly connected on the wedge block (62); The third connecting rod (64) is rotatably installed on the shell (1) near the first connecting rod (41) side, and the first end of the third connecting rod (64) is located on the second end of the second connecting rod (63), and the second end of the third connecting rod (64) is located in the knife groove (12).

3. The fiber cleaver of claim 2, wherein: The second reset spring (65) is arranged between the third connecting rod (64) and the shell (1).

4. The fiber cleaver of claim 3, wherein: After the third connecting rod (64) is reset under the drive of the second reset spring (65), the first end of the third connecting rod (64) is located on the rotating shaft position of the gland (3).

5. The fiber cleaver of claim 1, wherein: The self-locking portion (51) includes the first pin (511) slidably installed in the tool rest (21), the third reset spring (512) is arranged between the first pin (511) and the tool rest (21), the unlocking portion (52) includes the second pin (521) slidably installed on the shell (1), and when the tool rest (21) slides to the side far from the rotating shaft of the gland (3), the first pin (511) and the second pin (521) are coaxial.

6. The fiber cleaver of claim 5, wherein: The upper end of the first pin (511) is spherical.

7. The fiber cleaver of claim 5, wherein: The upper end of the second pin (521) is fixedly connected with the limiting sheet (522).

8. The fiber cleaver of claim 1, wherein: The bottom of the tool rest (21) is provided with a cylindrical hole, and the drive spring (42) is inserted and installed in the cylindrical hole.

9. The fiber cleaver of claim 1, wherein: The grommet (3) is provided with a rectangular slot on both sides, a pressing block (31) is slidably installed in the rectangular slot, the pressing block (31) is provided with a clamping slot (32) on the side, and the pressing block (31) and the rectangular slot are provided with a spring.

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