Miniature weak current threading apparatus

Abstract

The utility model discloses a miniature weak current threading apparatus which comprises a coiling box, a steel wire rope is wound inside the coiling box, the end portion of the steel wire rope penetrates out of a wire outlet hole of the coiling box, and a threading head is installed at the end portion of the steel wire rope penetrating out of the coiling box. A first wire inserting hole and a second wire inserting hole are formed in the two opposite ends of the wire penetrating head respectively, a first threaded hole is formed in the outer wall face of the wire penetrating head in the radial direction of the first wire inserting hole in an internal-external penetrating mode, and a second threaded hole is formed in the outer wall face of the wire penetrating head in the radial direction of the second wire inserting hole in an internal-external penetrating mode. The end of the steel wire rope extends into the first wire inserting hole, the first screw is locked from outside to inside through the first threaded hole, and one end of the screw is pressed on the steel wire rope in the first wire inserting hole. When the threading device is used, a to-be-threaded wire extends into the second wire inserting hole, the second screw locked in the second threaded hole is adopted for radial fastening, operation is convenient, fastening is reliable, the threading device is simple in overall structure, small in size and convenient to carry, threading construction of a weak current control wire and the like in a narrow space is facilitated, and practicability is good.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage installation auxiliary facilities technology, and in particular to a miniature low-voltage wiring device. Background Technology

[0002] During the installation of low-voltage wiring in control panels, the narrow space between the terminal blocks and control lines makes it difficult to lay the control lines, especially when adding lines after the control panel wiring is completed, the wiring operation is very troublesome.

[0003] Currently, the methods for fixing the threader and the threader are relatively traditional, such as using tape, wire cages, wire, cable ties, etc., to temporarily fix the threader and the threader. This is cumbersome to operate and the fixation is not very secure. In addition, existing threading equipment is large, which is inconvenient to use in small spaces and is also inconvenient to carry. Utility Model Content

[0004] To address the aforementioned issues, this application provides a reasonably structured miniature low-voltage wiring device that is easy to operate, securely fastened, and has a simple overall structure, small size, and is easy to carry. It is convenient for wiring low-voltage control lines and other components in confined spaces, making it highly practical.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A miniature low-voltage cable puller includes a cable reel box, inside which a steel wire rope is wound. The end of the steel wire rope passes through a cable outlet hole in the cable reel box, and a cable puller is installed at the end of the steel wire rope that passes through the cable reel box. The two opposite ends of the cable puller are respectively provided with a first insertion hole and a second insertion hole. A first threaded hole is provided through the outer wall of the cable puller along the radial direction of the first insertion hole, and a second threaded hole is provided through the radial direction of the second insertion hole. The end of the steel wire rope extends into the first insertion hole, and a first screw is locked from the outside to the inside through the first threaded hole, with the end of the first screw pressing against the steel wire rope inside the first insertion hole.

[0007] As a further improvement to the above technical solution:

[0008] The end of the wire to be threaded extends into the second insertion hole, and the second screw is locked from the outside to the inside through the second threaded hole, with the end of the second screw pressing against the wire to be threaded inside the second insertion hole.

[0009] The diameter of the wire rope is less than 3mm, and the total length of the wire rope is no more than 2m.

[0010] The first and second insertion holes are arranged coaxially, or the first and second insertion holes are arranged axially parallel.

[0011] The structure of the threading head is as follows: it includes a cylindrical body, with a first insertion hole and a second insertion hole respectively opened inward on both ends of the cylindrical body, and a first threaded hole and a second threaded hole respectively opened from the periphery of the cylindrical body to the outer wall surface and connecting to the first insertion hole and the second insertion hole; the first threaded hole and the second threaded hole are arranged in two along the axial direction of the cylindrical body.

[0012] The cylindrical body includes a small-diameter portion with a wire insertion hole, and a large-diameter portion connected to the end face of the small-diameter portion opposite to the wire insertion hole.

[0013] The inner wall of the first insertion hole is also provided with a recessed hole, which is arranged in correspondence with the first threaded hole and located on the same straight line; the inner wall of the second insertion hole is also provided with a recessed hole, which is arranged in correspondence with the second threaded hole and located on the same straight line.

[0014] The winding box consists of two housings, housing 1 and housing 2, arranged facing each other to form an internal accommodating space. Inside the accommodating space, a rotating shaft is arranged perpendicular to housing 1 and housing 2. Side plates are spaced along the axial direction on the rotating shaft. A ring-shaped winding body is installed between the two side plates and rotates around the rotating shaft. The wire rope is wound on the ring-shaped winding body. A large spring is fitted on the rotating shaft between the two side plates. Elastic protrusions extend outward from the outer wall of the side plates. A partition is installed on the inner wall of housing 2 to form a driving space. A large gear is fitted on the rotating shaft in the driving space. The box also includes a driving part that drives the large gear to rotate.

[0015] The structure of the drive unit is as follows: it includes an operating rod that extends through the housing and into the drive space. The outer end of the operating rod extends circumferentially to form a flange that facilitates hand operation, and the inner end of the operating rod extends circumferentially to form a small gear. It also includes a guide rod with one end mounted on the partition plate. The other end of the guide rod extends axially into the insertion hole of the operating rod. A small spring is fitted on the guide rod located between the small gear and the partition plate.

[0016] The inner walls of the first and second housings are respectively provided with concave structures for fitting and rotating the shaft end, and the outer walls of the first and second housings are respectively provided with convex structures corresponding to the concave structures.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] When using this utility model, the wire to be threaded is inserted into the second insertion hole, and radially fastened by the second screw locked in the second threaded hole. It is easy to operate and the fastening is reliable. In addition, the overall structure of the wire threader is simple, the size is small and easy to carry, and it is convenient for threading low-voltage control lines in narrow spaces. It is practical.

[0019] This utility model also has the following advantages:

[0020] By setting protrusions on the outer wall of the side plates, under the action of the large spring, the two side plates will respectively fit with the first and second plates of the housing. The elastic protrusions effectively increase the frictional resistance of the side plate fitting, thereby effectively preventing the shaft from rotating unexpectedly and preventing the wire rope from being accidentally released or retracted when not in operation.

[0021] By applying axial inward force to the operating lever, the small gear at the inner end of the operating lever meshes with the large gear on the rotating shaft. At the same time, rotating the operating lever drives the rotating shaft to rotate, thereby realizing the winding or unwinding of the wire rope in the winding box. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a cross-sectional view of the thread-threading head of this utility model.

[0024] Figure 3 This is a cross-sectional view of the cable reel box of this utility model.

[0025] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0026] The components include: 1. Cable reel; 2. Wire rope; 3. Cable end; 4. Two screws; 5. One screw.

[0027] 10. Cable outlet; 111. Housing 1; 112. Housing 2; 113. Partition plate; 114. Outward protrusion structure; 12. Annular winding body; 13. Side plate; 131. Protrusion; 14. Rotating shaft; 141. Large gear; 15. Large spring; 16. Operating lever; 161. Insertion hole; 162. Small gear; 17. Guide rod; 18. Small spring; 19. End plate;

[0028] 31. Columnar body; 311. Small diameter section; 312. Large diameter section; 32. Two recessed holes; 33. One threaded hole; 34. One insertion hole; 35. One recessed hole; 36. Two insertion holes; 37. Two threaded holes. Detailed Implementation

[0029] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0030] like Figure 1 As shown, a miniature low-voltage cable puller of this embodiment includes a cable reel box 1, a steel wire rope 2 is wound inside the cable reel box 1, the end of the steel wire rope 2 passes through the cable outlet hole 10 of the cable reel box 1, and a cable puller 3 is installed on the end of the steel wire rope 2 that passes through the cable reel box 1.

[0031] like Figure 2As shown, the two opposite ends of the wire threading head 3 are respectively provided with insertion hole 34 and insertion hole 36. Threaded hole 33 is provided through the outer wall of the wire threading head 3 radially inside and outside the insertion hole 34, and threaded hole 37 is provided through the outer wall of the wire threading head 3 radially inside and outside the insertion hole 36. The end of the wire rope 2 extends into the insertion hole 34, and screw 5 is locked from the outside to the inside through the threaded hole 33. The end of screw 5 is pressed against the wire rope 2 inside the insertion hole 34.

[0032] When using it, insert the wire to be threaded into the insertion hole 36 and use the screw 4 locked in the threaded hole 36 for radial tightening. The operation is convenient and the tightening is reliable.

[0033] In this embodiment, the cable to be threaded can be a small-radius cable such as a controller or signal line in low-voltage circuits, which can be tightened inside the threading head 3 by pressing the end of the screw 4.

[0034] In this embodiment, the end of the wire rope 2 is fixed to the threading head 3 by screw 5. With daily use of threading, after the threading head 3 gradually wears down at the insertion hole 37 and other positions, the wire rope 2 can be removed from the threading head 3 according to actual needs, and then a new threading head 3 can be replaced. Of course, threading heads of different sizes can also be used to match the needs of threading.

[0035] The end of the wire to be threaded extends into the insertion hole 36, and the screw 4 is locked from the outside to the inside through the threaded hole 37, with the end of the screw 4 pressing against the wire to be threaded inside the insertion hole 36.

[0036] The diameter of the steel wire rope 2 is less than 3mm, and the total length of the steel wire rope 2 is no more than 2m, which can meet the needs of daily wire threading while ensuring the small size of the wire threader.

[0037] The insertion hole 34 and the insertion hole 36 are arranged coaxially, or the insertion hole 34 and the insertion hole 36 are arranged axially parallel; both can meet the requirements for wire threading.

[0038] In this embodiment, the coaxially arranged insertion holes 34 and 36 can be connected or disconnected.

[0039] The structure of the wire threader 3 is as follows: it includes a cylindrical body 31, with a wire insertion hole 34 and a wire insertion hole 36 respectively opened inward on both ends of the cylindrical body 31, and a threaded hole 33 and a threaded hole 37 respectively opened from the periphery of the cylindrical body 31 outward to the wire insertion hole 34 and the wire insertion hole 36; two threaded holes 33 and two threaded holes 37 are respectively arranged along the axial direction of the cylindrical body 31.

[0040] In this embodiment, by pressing two screws 5 into the end of the steel wire rope 2 inserted into the threading head 3 and pressing two screws 4 into the end of the wire to be threaded into the threading head 3, the reliable and stable fixation of the steel wire rope 2 and the wire to be threaded in the threading head 3 is effectively ensured.

[0041] The cylindrical body 31 includes a small diameter portion 311 with a wire insertion hole 34, and a large diameter portion 312 is connected to the end face of the small diameter portion 311 facing away from the wire insertion hole 34.

[0042] A recessed hole 35 is also provided on the inner wall of the insertion hole 34. The recessed hole 35 is arranged in correspondence with the threaded hole 33 and is located on the same straight line. A recessed hole 32 is also provided on the inner wall of the insertion hole 36. The recessed hole 32 is arranged in correspondence with the threaded hole 37 and is located on the same straight line.

[0043] In this embodiment, concave hole 35 and concave hole 32 can be concave spherical structures, which help to ensure that the steel wire rope 2 and the wire to be threaded are pressed and attached.

[0044] In this embodiment, by setting concave hole 35 and concave hole 32, when the wire rope 2 is pressed against the wall of the insertion hole 34 by screw 5 and the wire to be threaded is pressed against the wall of the insertion hole 36 by screw 4, the wire rope 2 and the wire to be threaded are pressed together by the inner wall of the concave hole 35 and the concave hole 32, effectively ensuring the reliability of the fixing of the wire rope 2 and the wire to be threaded in the threading head 3.

[0045] In this embodiment, the threading head 3 can be processed and structurally designed according to the actual situation. For example, the threading head 3 can be configured to be composed of two parts, left and right, separated along the axial longitudinal section, which facilitates the processing of the concave hole 35 and concave hole 32 inside the threading head 3.

[0046] like Figure 3 As shown, the winding box 1 consists of a housing 111 and a housing 112 arranged facing each other to form an internal accommodating space. Inside the accommodating space, a rotating shaft 14 is arranged perpendicular to the housing 111 and the housing 112. Side plates 13 are arranged axially on the rotating shaft 14. An annular winding body 12 is installed between the two side plates 13. The annular winding body 12 rotates around the rotating shaft 14. The wire rope 2 is wound on the annular winding body 12. By rotating the rotating shaft 14, the wire rope 2 can be wound or unwound in the winding box 1.

[0047] A large spring 15 is fitted on the pivot 14 located between the two side plates 13, and elastic protrusions 131 extend outward from the outer wall of the side plates 13 respectively.

[0048] In this embodiment, by setting the protrusions 131 on the outer wall of the side plate 13, under the action of the large spring 15, the two side plates 13 will respectively fit with the housing 111 and the partition 113. The elastic protrusions 131 effectively increase the frictional resistance of the side plates 13 fitting together, thereby effectively preventing the accidental rotation of the shaft 14 and the accidental release or reeling of the wire rope 2 when not in operation.

[0049] A partition 113 is installed on the inner wall of the housing 112 to form a drive space. A large gear 141 is mounted on the rotating shaft 14 located in the drive space, and a drive unit is also included to drive the large gear 141 to rotate.

[0050] In this embodiment, the large gear 141 is driven to rotate by the drive unit, thereby causing the rotating shaft 14 to rotate, so as to realize the winding or unwinding of the wire rope 2.

[0051] like Figure 4 As shown, the structure of the drive unit includes an operating rod 16 that extends through the housing 112 into the drive space. The outer end of the operating rod 16 extends circumferentially to form a flange that facilitates hand operation, and the inner end of the operating rod 16 extends circumferentially to form a pinion 162. It also includes a guide rod 17 with one end mounted on the partition 113. The other end of the guide rod 17 extends axially into the insertion hole 161 of the operating rod 16. A small spring 18 is fitted on the guide rod 17 located between the pinion 162 and the partition 113.

[0052] In this embodiment, by applying axial inward force to the operating lever 16, the small gear 162 at the inner end of the operating lever 16 moves inward and meshes with the large gear 141 on the rotating shaft 14. At the same time, the operating lever 16 is rotated, which drives the rotating shaft 14 to rotate, so as to realize the winding or unwinding of the wire rope 2 in the winding box 1.

[0053] In this embodiment, the small spring 18 causes the small gear 162 to disengage from the large gear 141. Only when the operating lever 16 is subjected to axial force to overcome the elastic force of the small spring 18 can the small gear 162 move axially inward and mesh with the large gear 141.

[0054] In this embodiment, the operating lever 16 and the guide lever 17 can be configured to rotate relative to each other according to actual needs. The rotation of the operating lever 16 can drive the large gear 141 to rotate via the small gear 162.

[0055] In actual operation, the guide rod 17 can also be configured to rotate relative to the partition 113, so that the guide rod 17 rotates synchronously when the operating rod 16 rotates. For example, one or more grooves are opened along the axial direction on the outer wall of the guide rod 17, and a protrusion extends inward from the inner wall of the insertion hole 161. The protrusion is slidably fitted in the groove, and the distance that the operating rod 16 moves axially relative to the guide rod 17 can be limited by the length of the groove.

[0056] In this embodiment, an end plate 19 can be fixedly installed on the partition 113 at the end of the guide rod 17 to prevent the guide rod 17 from moving axially or detaching from the partition 113.

[0057] The inner walls of housing 111 and housing 212 are respectively formed with concave structures for fitting and rotating the end of the rotating shaft 14. The outer walls of housing 111 and housing 212 are respectively formed with convex structures 114 corresponding to the concave structures, which effectively ensures the rotation of the rotating shaft 14 inside the winding box 1.

[0058] In use, the user inserts the end of the wire to be threaded into the insertion hole 36 of the threading head 3, and screws the screw 4 from the outside to the inside into the threaded hole 37 of the threading head 3 until the inner end of the screw 4 is pressed against the wire to be threaded, so that the wire to be threaded is pressed and fixed between the inner end of the screw 4 and the inner wall of the insertion hole 36, thus realizing the installation of the wire to be threaded on the threading head 3. Then, the user can start the threading work.

[0059] This utility model is easy to operate, secure and reliable, and the overall structure of the wire puller is simple, small in size and easy to carry. It is convenient for wire pulling construction of low-voltage control lines in confined spaces and has good practicality.

[0060] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0061] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A miniature weak current wire-through, characterized by: The utility model provides a wire threading head and a wire threading box, and the wire threading head is arranged on the wire threading box, and the wire threading box is used for winding the steel wire rope, and the wire threading head is used for threading the steel wire rope.

2. A micro-weak electric wire threading device according to claim 1, wherein: The diameter of the steel wire rope is less than or equal to 3 mm, and the total length of the steel wire rope is less than or equal to 2 m.

3. A micro-weak electric wire threading device as claimed in claim 1, wherein: The wire threading hole one and the wire threading hole two are coaxially arranged or are arranged in parallel with each other in the axial direction.

4. A micro-weak electric wire threading device as claimed in claim 1, wherein: The wire threading head comprises a cylindrical body, and the two end faces of the cylindrical body are respectively provided with the wire threading hole one and the wire threading hole two.

5. A micro-weak electric wire threading device as claimed in claim 1, wherein: The cylindrical body comprises a small-diameter part provided with the wire threading hole one, and the end face of the small-diameter part away from the wire threading hole one is connected with a large-diameter part.

6. A micro-weak current fish tape according to claim 5, wherein: The inner wall surface of the wire threading hole one is further provided with a concave hole one corresponding to the threaded hole one and located on the same straight line.

7. A micro-weak electric wire threading device as claimed in claim 1 or 5, wherein: The inner wall surface of the wire threading hole two is further provided with a concave hole two corresponding to the threaded hole two and located on the same straight line.

8. A micro-weak current fish tape according to claim 1, wherein: The winding box (1) is composed of a housing one (111) and a housing two (112) which are oppositely matched to form an internal accommodation space, and a rotating shaft (14) is vertically arranged in the accommodation space and rotates relative to the housing one (111) and the housing two (112), a side plate (13) is arranged on the rotating shaft (14) in an axial direction, an annular winding body (12) is jointly installed between the two side plates (13), the annular winding body (12) rotates around the rotating shaft (14) as a center, and a steel wire rope (2) is wound on the annular winding body (12); a large spring (15) is sleeved on the rotating shaft (14) between the two side plates (13), and elastic convex points (131) are respectively formed on the outer wall surfaces of the side plates (13) and extend outward; a partition plate (113) is installed on the inner wall surface of the housing two (112) to form a driving space, a large gear (141) is sleeved on the rotating shaft (14) in the driving space, and a driving part is further included to drive the large gear (141) to rotate.

9. A micro-weak current fish tape according to claim 8, wherein: The driving part comprises an operating rod (16) which penetrates through the housing two (112) and extends into the driving space, an outer end portion of the operating rod (16) extends in a circumferential direction to form a flange which is convenient for hand operation, and an inner end portion of the operating rod (16) extends in a circumferential direction to form a small gear (162); a guide rod (17) is installed at one end on the partition plate (113), the guide rod (17) extends into a plug hole (161) of the operating rod (16) in an axial direction at the other end, and a small spring (18) is sleeved on the guide rod (17) between the small gear (162) and the partition plate (113).

10. A micro-weak current fish tape according to claim 8, wherein: The inner wall surfaces of the housing one (111) and the housing two (112) respectively form recessed structures for matching and rotating with the end portions of the rotating shaft (14), and the outer wall surfaces of the housing one (111) and the housing two (112) form convex structures (114) corresponding to the recessed structures.

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