Optical cable clamp

Abstract

The utility model provides an optical cable clamp, and relates to the field of optical cable installation tools, and the optical cable clamp comprises a pedestal, an eccentric wheel, and a fixed part. The eccentric wheel is rotationally connected to the base, the fixing piece is connected to the base and covers the eccentric wheel in a pressing mode, and the eccentric wheel is clamped between the base and the fixing piece through the base and the fixing piece. A clamping groove is formed between the outer edge of the eccentric wheel and the base, the convex part of the eccentric wheel rotates towards the optical cable clamping direction, the clamping groove is gradually reduced, and the optical cable is extruded by the eccentric wheel and the base in the clamping groove so as to be clamped. The optical cable clamping device has the effect of conveniently clamping the optical cable.

Description

Technical Field

[0001] This application relates to the field of optical cable installation tools, and particularly to an optical cable clamp. Background Art

[0002] An optical cable is a communication line in which a certain number of optical fibers are arranged in a certain manner to form a cable core, with a sheath on the outside, and some are also covered with an outer protective layer to achieve the transmission of optical signals. When laying an optical cable over a long distance, a clamp is required for auxiliary fixation to ensure the safety of the optical cable during use. Most of the existing optical cable clamps have a single and fixed structure, which can only fix the optical cable and cannot clamp the optical cable well, resulting in the loosening of the optical cable. Utility Model Content

[0003] To solve the problem that the prior art cannot achieve good clamping of the optical cable, this application provides an optical cable clamp.

[0004] An optical cable clamp provided by this application adopts the following technical solutions:

[0005] An optical cable clamp, comprising:

[0006] A base, the base having a limiting clamping plate;

[0007] A fixing member;

[0008] An eccentric wheel, rotatably connected to the base through the fixing member, a clamping groove for placing the optical cable is formed between the outer edge of the eccentric wheel and the limiting clamping plate, the clamping groove gradually decreases when the convex part of the eccentric wheel rotates towards the limiting clamping plate, and the minimum distance between the eccentric wheel and the limiting clamping plate is less than the diameter of the optical cable to be clamped.

[0009] By adopting the above technical solutions, the base is rotatably connected to the eccentric wheel through the fixing member, a clamping groove for placing the optical cable is formed between the base and the eccentric wheel, and when the eccentric wheel rotates towards the direction of clamping the optical cable, the clamping groove gradually decreases and the optical cable is gradually clamped.

[0010] Preferably, the base has a connecting shaft, the fixing member includes a fixing pin, the fixing pin is connected to the connecting shaft, the eccentric wheel is provided with a connecting hole, the eccentric wheel is sleeved outside the connecting shaft through the connecting hole, the fixing pin presses on the eccentric wheel, and the eccentric wheel is clamped between the fixing pin and the base.

[0011] Preferably, a sliding block is provided on the base, and a limiting groove for the sliding block to slide is provided on the eccentric wheel.

[0012] Preferably, the fixing pin includes a limiting block and a buckle, the limiting block presses on the eccentric wheel, the connecting shaft is a hollow shaft for the buckle of the fixing pin to insert, and a clamping groove for the buckle to be clamped is provided on the inner wall of the connecting shaft.

[0013] Preferably, the fixing member further includes an anti - detachment pin. The buckle is arranged on the limiting block. There are several buckles, and the several buckles form a pin hole for the anti - detachment pin to insert. The anti - detachment pin prevents the buckle from slipping out of the clamping groove.

[0014] Preferably, a positioning groove extends from the inner wall of the connecting hole towards the circumferential direction close to the connecting hole, and the limiting block presses on the positioning groove.

[0015] Preferably, the eccentric wheel includes a turntable. The turntable covers the clamping groove. The turntable has a flat part and a bent part that bends upwards. The distance from the bent part to the base is greater than the height of the limiting clamping plate. When the eccentric wheel rotates towards the direction of clamping the optical cable, the flat part gradually approaches the clamping groove. When the flat part moves to the entrance of the clamping groove, the flat part presses on the limiting clamping plate to prevent the optical cable from slipping out of the clamping groove.

[0016] Preferably, the eccentric wheel includes a runner, and the outer edge of the runner is configured as external teeth to increase the friction force when the eccentric wheel contacts the optical cable.

[0017] Preferably, a limiting convex block for preventing the optical cable from slipping is provided at the outlet of the clamping groove, and the limiting convex block is located on the limiting clamping plate.

[0018] Preferably, an anti - detachment convex block for preventing the optical cable from slipping is provided at the outlet of the clamping groove, and the anti - detachment convex block is located on the base.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] The structure is reasonably arranged, capable of clamping the optical cable so that the optical cable is not easily loosened;

[0021] The operation is simple, capable of quickly realizing the fixing and clamping of the optical cable, and improving the installation efficiency of the optical cable;

[0022] It is small in size, convenient to carry and use, and suitable for the diverse characteristics of the optical cable erection operation environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three - dimensional structural schematic diagram of the optical cable clamp in Embodiment 1 of the present application.

[0024] Figure 2 is an exploded view of the optical cable clamp in Embodiment 1 of the present application.

[0025] Figure 3 is a cross - sectional structural schematic diagram of the optical cable clamp in Embodiment 1 of the present application.

[0026] Figure 4 is a top view of the optical cable clamp in Embodiment 1 of the present application.

[0027] Figure 5 is Figure 4 The schematic cross-sectional structure diagram along the A-A direction in the

[0028] Figure 6 is the explosion schematic diagram of the optical cable clamp from another perspective in Embodiment 1 of the present application.

[0029] Figure 7 is the top view of the optical cable clamp in Embodiment 2 of the present application.

[0030] Explanation of reference numerals: 1, base; 2, fixing member; 3, eccentric wheel; 4, clamping groove; 11, base; 12, limiting clamping plate; 13, connecting shaft; 31, convex portion; 32, connecting hole; 21, fixing pin; 22, anti-detachment pin; 211, limiting block; 212, buckle; 33, positioning groove; 131, clamping groove; 213, pin hole; 221, round head; 222, countersunk head; 14, slider; 34, limiting groove; 15, mounting hole; 35, turntable; 36, runner; 351, flat portion; 352, bent portion; 121, limiting convex block; 111, anti-detachment convex block; 5, material reduction hole; 122, anti-slip portion. Detailed implementation manners

[0031] The following further describes the present application in detail with reference to the Figure 1-7 accompanying drawings.

[0032] Embodiment 1 of the present application discloses an optical cable clamp. Embodiment

[0033] Referring to Figure 1 , the optical cable clamp includes a base 1, a fixing member 2 and an eccentric wheel 3. The eccentric wheel 3 is rotatably connected to the base 1. The fixing member 2 is connected to the base 1. The fixing member 2 presses on the eccentric wheel 3. The base 1 and the fixing member 2 clamp the eccentric wheel 3 therebetween. A clamping groove 4 is formed between the outer edge of the eccentric wheel 3 and the base 1. During the rotation of the eccentric wheel 3, the width of the clamping groove 4 will go through a process from large to small, so that the eccentric wheel 3 can clamp the optical cable located in the clamping groove 4 during rotation.

[0034] Referring to Figure 2 and Figure 3, the base 1 includes a base 11, a limiting clamping plate 12 and a connecting shaft 13. The limiting clamping plate 12 is integrally connected to the base 11 and is located on one side of the eccentric wheel 3. A clamping groove 4 for placing the optical cable is formed between the limiting clamping plate 12 and the outer edge of the eccentric wheel 3. The eccentric wheel 3 is a kind of cam. When the eccentric wheel 3 rotates around the connecting shaft 13, the connecting shaft 13 is the rotation axis of the eccentric wheel 3. The distance from the center of the rotation axis of the eccentric wheel 3 to a certain point on the outer edge of the eccentric wheel 3 is the radius of that point on the eccentric wheel 3. The point on the outer edge of the eccentric wheel 3 corresponding to the maximum radius of the eccentric wheel 3 is the end point, and the end of the eccentric wheel 3 where the end point is located is the convex part 31 of the eccentric wheel 3. The distance from the eccentric wheel 3 to the limiting clamping plate 12 is the width of the clamping groove 4. When the eccentric wheel 3 rotates, the distance from the convex part 31 of the eccentric wheel 3 to the limiting clamping plate 12 will surely change, and the width of the clamping groove 4 will also change. The rotation direction in which the distance from the convex part 31 of the eccentric wheel 3 to the limiting clamping plate 12 changes from large to small is the optical cable clamping direction (such as Figure 3 the direction indicated by the arrow in). It should be limited that the minimum distance between the eccentric wheel 3 and the limiting clamping plate 12 is less than the diameter of the optical cable to be clamped. When the convex part 31 of the eccentric wheel 3 rotates in the optical cable clamping direction, the width of the clamping groove 4 also changes from large to small, so as to clamp the optical cable. Further, by adjusting the minimum distance between the eccentric wheel 3 and the limiting clamping plate 12, optical cables of different thicknesses can be adapted.

[0035] The connecting shaft 13 is a hollow shaft. One end of the connecting shaft 13 is connected to the base 11, and the limiting clamping plate 12 and the connecting shaft 13 are located on the same side of the base 11. Both ends of the hollow shaft penetrate through. The eccentric wheel 3 is provided with a connecting hole 32, and the eccentric wheel 3 is sleeved outside the connecting shaft 13 through the connecting hole 32.

[0036] Refer to Figure 2 and Figure 5The fixing member 2 includes a fixing pin 21 and an anti-slip pin 22. The fixing pin 21 is inserted into the connecting shaft 13 and is pressed onto the eccentric wheel 3, so that the eccentric wheel 3 is stuck between the base 1 and the fixing pin 21. The eccentric wheel 3 can freely rotate circumferentially around the connecting shaft 13 between the base 1 and the fixing pin 21, but cannot escape from the area between the fixing pin 21 and the base 1. The fixing pin 21 includes a connected limit block 211 and a buckle 212. The inner wall of the connecting hole 32 extends a positioning groove 33 in the circumferential direction close to the connecting hole 32. The limit block 211 is pressed onto the positioning groove 33 to prevent the eccentric wheel 3 from falling off the connecting shaft 13. There are multiple clips 212, and in one embodiment, four clips 212 can be arranged symmetrically around the center. The four clips 212 are integrally connected to the stop block 211. The inner wall of the connecting shaft 13 is provided with a slot 131 for the clips 212 to engage. During installation of the fixing pin 21, the clip 212 is inserted into the connecting shaft 13 from one end until the clip 212 engages with the slot 131, thereby completing the fixation with the stop block 211. The clips 212 may elastically deform inward due to force and disengage from the slot 131. To prevent the clips 212 from disengaging from the slot 131, pin holes 213 for inserting the anti-drop pin 22 are formed between the multiple clips 212. The anti-slip pin 22 includes a round head 221 and a countersunk head 222. The countersunk head 222 is integrally connected to the round head 221. The countersunk head 222 is interference-fitted into the pin hole 213, confining the buckle 212 in the slot 131, thereby preventing the buckle 212 from slipping out of the slot 131 due to deformation. Alternatively, the countersunk head 222 is inserted into the pin hole 213, and the round head 221 is interference-fitted into the base 1. This method can also confine the buckle 212 in the slot 131.

[0037] Reference Figure 2 and Figure 6 , a slider 14 is provided on the base 1, and a limiting groove 34 is provided in the eccentric wheel 3 for the slider 14 to slide. The slider 14 can be provided on the connecting shaft 13, and in this case, the limiting groove 34 is located on the inner wall of the connecting hole 32 and communicates with the connecting hole 32. The slider 14 can also be provided on the base 11, and the limiting groove 34 is located in the eccentric wheel 3 in the circumferential direction of the connecting hole 32. The slider 14 and the limiting groove 34 enable a rotational connection between the base 1 and the eccentric wheel 3, and the limiting groove 34 controls the range of force applied to the optical cable by limiting the rotation angle of the eccentric wheel 3. Furthermore, one of the moving directions of the slider 14 in the limiting groove 34 can be set to completely match the clamping direction of the optical cable, so that the eccentric wheel 3 can only clamp the optical cable by rotating in one direction. In addition, a mounting hole 15 is provided at one end of the base 1 for connecting or fixing the wire clamp.

[0038] Reference Figure 1 and Figure 2, the eccentric wheel 3 includes a turntable 35 and a runner 36 that are integrally and coaxially arranged. The turntable 35 covers the clamping groove 4. The turntable 35 is circumferentially divided along the runner 36 into a flat part 351 and a bent part 352 that bends upward. The distance from the bent part 352 to the base 11 is greater than the height of the limit clamping plate 12, so that an opening for the optical cable to be placed in the clamping groove 4 is formed between the bent part 352 and the limit clamping plate 12. When the optical cable is placed into the clamping groove 4 from the opening formed between the bent part 352 and the limit clamping plate 12, the optical cable slides into the clamping groove 4 along the bent part 352. At the same time, the bent part 352 covers the clamping groove 4 and restricts the optical cable from coming out from above the clamping groove 4 to a certain extent. When the convex part 31 of the eccentric wheel 3 rotates in the direction of clamping the optical cable, the bent part 352 displaces in the direction of clamping the optical cable, the bent part 352 gradually rotates out of the clamping groove 4, and the flat part 351 gradually rotates into the clamping groove 4. The entrance of the optical cable is the entrance of the clamping groove 4, and the exit of the optical cable is the exit of the clamping groove 4. When moving from the flat part 351 to the entrance of the clamping groove 4, the flat part 351 always presses on the limit clamping plate 12 to prevent the optical cable from coming out of the clamping groove 4. In addition, the direction of clamping the optical cable is marked on the turntable 35, and the outer edge of the runner 36 is configured as external teeth to increase the friction force when the eccentric wheel 3 contacts the optical cable.

[0039] Further, when the optical cable is tightened along the direction of the exit of the clamping groove 4, the eccentric wheel 3 will rotate in the direction of clamping the optical cable under the action of the pulling force, and the width of the clamping groove 4 will be further reduced, so that the optical cable is always in a clamped state.

[0040] A limit convex block 121 and an anti-disengagement convex block 111 for restricting the slippage of the optical cable are provided at the exit of the clamping groove 4. The limit convex block 121 is provided on the limit clamping plate 12 to prevent the optical cable from coming out from above the clamping groove 4, and the anti-disengagement convex block 111 is provided on the base 11 to prevent the optical cable from coming out of the clamping groove 4.

[0041] In addition, referring to Figure 2 and Figure 6 , a plurality of material-reducing holes 5 with different shapes are provided on the limit clamping plate 12, the base 11, the anti-disengagement convex block 111 and the eccentric wheel 3. The material-reducing holes 5 near the entrance of the clamping groove 4 on the limit clamping plate 12 completely penetrate the base 11, and the material-reducing holes 5 near the exit of the clamping groove 4 penetrate through the limit clamping plate 12 and do not penetrate through the base 11. The material-reducing holes 5 of the base 11 are located at the position of the orthographic projection of the limit convex block 121 on the base 11, and can facilitate the molding of the limit convex block 121 during the injection molding process. The material-reducing holes 5 of the anti-disengagement convex block 111 completely penetrate the base 11. The material-reducing holes 5 of the eccentric wheel 3 are located at the bottom of the eccentric wheel 3. The setting of the material-reducing holes 5 facilitates the molding of the thicker parts during the injection molding process and is also beneficial to cost saving.

[0042] The implementation principle of an optical cable clamp in an embodiment of this application is as follows: The fixing pin 21 is inserted into the connecting shaft 13, the eccentric wheel 3 is sleeved outside the connecting shaft 13, the eccentric wheel 3 is clamped between the fixing pin 21 and the base 1, the limiting block 211 presses on the positioning groove 33, the buckle 212 is clamped into the clamping groove 131 on the inner wall of the connecting shaft 13, and the anti-detachment pin 22 is inserted into the pin hole 213 to prevent the buckle 212 from falling out of the clamping groove 131, so that the fixing pin 21, the base 1 and the eccentric wheel 3 are firmly connected. By arranging a slider 14 on the base 1 and arranging a limiting groove 34 for the slider 14 to slide on the eccentric wheel 3 to limit the rotation range of the eccentric wheel 3 and the base 1, the fixing pin 21, the base 1 and the eccentric wheel 3 are rotatably connected. When installing the optical cable, the optical cable is placed into the clamping groove 4 from the bent portion 352 of the eccentric wheel 3. When the convex portion 31 of the eccentric wheel 3 rotates towards the optical cable clamping direction, the clamping groove 4 gradually decreases, thereby achieving the effect of gradually clamping the optical cable. At the same time, a limiting convex block 121 and an anti-detachment convex block 111 are arranged at the outlet of the clamping groove 4 to prevent the optical cable from slipping out of the clamping groove 4, so that the optical cable slides out towards the set outlet direction in the clamping groove 4. Embodiment

[0043] The difference between this embodiment and the first embodiment is: Refer to Figure 7 , there are two bases 1, two eccentric wheels 3 and two fixing members 2, that is, there are two sets of clamp sleeve groups including the base 1, the eccentric wheel 3 and the fixing member 2. The bases 11 of the two bases 1 are connected together, the two limiting clamping plates 12 are respectively located on different sides of the two eccentric wheels 3. Correspondingly, the two clamping offset grooves 4 are also located on different sides of the two eccentric wheels 3. The outlet of one clamping groove 4 communicates with the inlet of the other clamping groove 4 end to end. The two clamping grooves 4 form an S-shaped channel for the optical cable to be placed. The inlet of one clamping groove 4 is the optical cable inlet, and the outlet of the other clamping groove 4 is the optical cable outlet. A limiting convex block 121 and an anti-detachment convex block 111 are arranged at the optical cable outlet.

[0044] The optical cable clamping directions of the two clamp sleeve groups are opposite. When the two eccentric wheels 3 rotate towards the optical cable clamping direction at the same time, the rotation directions of the two eccentric wheels 3 are opposite, and the widths of the two clamping grooves 4 both decrease. The optical cable is in an S shape in the clamping groove 4. Since the rotation directions of the two eccentric wheels 3 are opposite, the two eccentric wheels 3 squeeze the optical cable in different directions respectively, and the optical cable is squeezed in both of the two clamping grooves 4. At this time, the force on the optical cable is greater than that of a single clamp sleeve group. Therefore, by arranging multiple clamp sleeve groups, the force for clamping the optical cable can be increased to meet the force requirements for clamping of different optical cables.

[0045] In addition, an anti-slip portion 122 is provided on the side of the limiting clamping plate 12 away from the clamping groove 4 to increase the friction force of holding the clamp and reduce the inconvenience caused by the slip of the optical cable clamp during operation.

[0046] The above are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. An optical cable clamp, characterized in that, Comprising: A base (1), the base (1) having a limit clamping plate (12); A fixing member (2); An eccentric wheel (3), rotatably connected to the base (1) through the fixing member (2), a clamping groove (4) for placing an optical cable is formed between the outer edge of the eccentric wheel (3) and the limit clamping plate (12), the clamping groove (4) gradually decreases when the convex part (31) of the eccentric wheel (3) rotates towards the limit clamping plate (12), and the minimum distance between the eccentric wheel (3) and the limit clamping plate (12) is smaller than the diameter of the optical cable to be clamped.

2. The optical cable clamp according to claim 1, characterized in that: The base (1) has a connecting shaft (13), the fixing member (2) includes a fixing pin (21), the fixing pin (21) is connected to the connecting shaft (13), the eccentric wheel (3) is provided with a connecting hole (32), the eccentric wheel (3) is sleeved outside the connecting shaft (13) through the connecting hole (32), the fixing pin (21) is pressed on the eccentric wheel (3), and the eccentric wheel (3) is clamped between the fixing pin (21) and the base (1).

3. The optical cable clamp according to claim 2, wherein: A slider (14) is provided on the base (1), and the eccentric wheel (3) is provided with a limit groove (34) for the slider (14) to slide.

4. The optical cable clamp according to claim 2, wherein: The fixing pin (21) includes a limit block (211) and a buckle (212), the limit block (211) presses on the eccentric wheel (3), the connecting shaft (13) is a hollow shaft for the buckle (212) of the fixing pin (21) to insert, and a clamping groove (131) for the buckle (to be embedded is provided on the inner wall of the connecting shaft (13).

5. The optical cable clamp according to claim 4, characterized in that: The fixing member (2) further includes an anti - detachment pin (22), the buckle (212) is arranged on the limit block (211), there are several buckles (212), and several buckles (212) form a pin hole (213) for the anti - detachment pin (22) to insert, and the anti - detachment pin (22) prevents the buckle (212) from slipping out of the clamping groove (131).

6. The optical cable clip according to claim 4, wherein: A positioning groove (33) extends from the inner wall of the connecting hole (32) towards the circumferential direction close to the connecting hole (32), and the limit block (211) presses on the positioning groove (33).

7. The optical cable clamp according to claim 1, characterized in that: The eccentric wheel (3) includes a turntable (35), the turntable (35) covers the clamping groove (4), the turntable (35) has a flat part (351) and a bent part (352) bent upwards, the distance from the bent part (352) to the base (1) is greater than the height of the limit clamping plate (12), when the eccentric wheel (3) rotates towards the direction of clamping the optical cable, the flat part (351) gradually approaches the clamping groove (4), and when the flat part (351) moves to the entrance of the clamping groove (4), the flat part (351) presses on the limit clamping plate (12) to prevent the optical cable from slipping out of the clamping groove (4).

8. The optical cable clamp according to claim 1, characterized in that: The eccentric wheel (3) includes a runner (36), and the outer edge of the runner (36) is configured as external teeth to increase the friction force when the eccentric wheel (3) contacts the optical cable.

9. The optical cable clamp according to claim 1, wherein: A limit bump (121) for restricting the slipping of the optical cable is provided at the outlet of the clamping groove (4), and the limit bump (121) is located on the limit clamping plate (12).

10. The optical cable clamp according to claim 1, characterized in that: The outlet of the clamping groove (4) is provided with an anti-slip convex block (111) for preventing the optical cable from slipping off, and the anti-slip convex block (111) is located on the base (1).

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