Cable fixing structure

Abstract

The invention discloses a cable fixing structure which comprises a control disc, a guide disc is arranged on the control disc, the control disc and the guide disc are arranged in a relative rotation mode, the middle positions of the control disc and the guide disc penetrate through to jointly form a through groove, and a control mechanism is arranged on the control disc and used for being matched with the control disc to adjust the size of the through groove; the size of the cavity formed by the multiple fixing plates is adjusted according to cables of different sizes, so that the cables are fixed, and the structure is high in flexibility and high in fastening performance.

Description

Technical Field

[0001] The invention relates to the technical field of travel switches, in particular to a cable fixing structure. Background Art

[0002] As an important component of the automatic control system, the limit switch is often used in extreme environments such as aerospace, military equipment, and deep-sea exploration. As a key component that provides on-off signals, the limit switch usually transmits the on (or off) signal to the external control system by throwing out the cable to ensure the normal operation of the control system. As the only output medium of the limit switch control signal, the cable must not only have electrical performance that meets the switch requirements, but also the assembly of the cable is also very critical. In addition to the neat appearance, it should also ensure that the cable can be reliably tied to avoid damage to the cable due to looseness and other reasons, which will ultimately affect the normal output of the entire limit switch signal.

[0003] This puts forward higher requirements on the cable fixing structure, which should not be too tight while being reliably tied, so as to avoid damage to the cable insulation layer, etc. At present, most of the commonly used cable fixing structures on the market are wire clamp structures.

[0004] The main defects of wire clamps are: first, due to the differences in the specifications of the switch wires and the number of cables, the wire clamps need to be designed one-to-one, and almost every switch needs its own wire clamp; second, because the designed wire clamp is almost circular, it is difficult to achieve the ideal effect between the wire clamp designed by theoretical calculation and the cable, and it is either too large or too small. If it is too large, the cable clamp will not be tight and the cable will be loose. Usually, auxiliary materials such as copper mesh are added to assist assembly; if the wire clamp is too small, the intended purpose can only be achieved through rework. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a cable fixing structure.

[0006] The present invention is achieved through the following technical solutions.

[0007] A cable fixing structure provided by the present invention comprises a control disk, on which a guide disk is arranged, the control disk and the guide disk are arranged to rotate relative to each other, the middle positions of the control disk and the guide disk are penetrated to form a through groove together, and a control mechanism is arranged on the control disk for adjusting the size of the through groove in cooperation with the control disk.

[0008] Preferably, the control mechanism includes a regular hexagonal guide rail, which is arranged on the control disk and between the outer circle and the inner circle of the control disk. A guide block is slidably arranged on each side of the regular hexagonal guide rail, and a fixed plate is connected to the end of the guide block away from the regular hexagonal guide rail; each fixed plate is connected to a fixed component, and multiple groups of fixed components are evenly distributed on the upper end of the guide disk, and the corresponding fixed plates are used to adjust the size of the through groove to stabilize it; in the initial state, multiple fixed plates are sequentially fitted with each other, so that the middle position of the through groove is in a closed state.

[0009] Preferably, the fixed component includes a slide rail, which is arranged on a guide plate, and the bottom of the slide rail is arranged to be through, and an assembly block is slidably arranged in the slide rail, and a connecting shaft is connected to the assembly block, and the end of the connecting shaft away from the assembly block passes through the bottom of the slide rail and is connected to the upper end of the fixed plate, and the moving direction of the connecting shaft is in the same direction as the length direction of the slide rail; a spring is connected to one side of the assembly block, and the end of the spring away from the assembly block is connected to the edge of the guide plate, and the expansion and contraction direction of the spring is in the same direction as the sliding direction of the slide rail.

[0010] Preferably, the connecting shaft consists of a threaded portion and a connecting portion, the cross-sectional diameter length of the threaded portion is smaller than the cross-sectional diameter length of the connecting portion, and a nut is integrally connected to one end of the connecting portion away from the threaded portion; a connecting hole is provided on the assembly block, and the connecting hole and the connecting portion are clearance-matched, a guide column is fixedly connected to the upper end of the fixing plate, and a threaded hole is provided at the upper end of the guide column, and the threaded hole is threadably matched with the threaded portion.

[0011] Preferably, a shell is provided on the guide plate, a through hole is provided at the bottom end of the shell, the through hole is connected to the through slot, a brim is provided on the outer peripheral side of the opening end of the shell, and the opening end of the shell is also fitted on the outer periphery of the control plate.

[0012] Preferably, a handle is provided on the control panel, and a mounting hole is provided on the handle.

[0013] Preferably, a limiting notch is provided on the brim, and the handle is placed in the limiting notch.

[0014] Preferably, a clamping block is fixedly connected to the outer periphery of the guide plate, and a limiting clamping groove is commonly provided on the outer shell and the brim, and the clamping block is clamped in the limiting clamping groove.

[0015] Preferably, a plurality of guide seats are arranged on the edge of the guide plate, and the plurality of guide seats are evenly spaced along the outer circumference of the guide plate, and the plurality of guide seats correspond to the plurality of slide rails one by one, and a guide groove is provided on the guide seat, and one end of the spring abuts against the corresponding guide groove.

[0016] Preferably, an insulating rubber layer is provided on the outer surface of the fixing plate.

[0017] The beneficial effects of the present invention are:

[0018] 1. By rotating the control disk, multiple guide blocks slide along the corresponding sides of the regular hexagonal guide rail, driving multiple fixed plates to rotate within a certain range, so that multiple fixed plates together form a cavity in the through slot and are connected to the through slot. The rotation arc of the control disk is adjusted to control the rotation angle of the fixed plate to adjust the size of the cavity. The cable is passed through the through slot and the cavity, and multiple fixed plates are adjusted to hold the cable together. At the same time, the fixed plate is pushed to hold the cable tightly by the pressure of the spring itself. The size of the cavity formed by multiple fixed plates is adjusted according to cables of different sizes to achieve the fixation of the cable. The structure has high flexibility and strong fastness.

[0019] 2. The control panel is rotated by turning the handle. After the cable is fixed, the handle is fixed to the travel switch by passing bolts or other workpieces through the assembly holes to achieve installation and fixation of the control panel, thereby achieving cable fixation. The installation operation is simple and suitable for cable fixation in multiple different positions.

[0020] 3. The spring, sliding block and connecting shaft work together to ensure that there is always a force pressing toward the center on the fixed plate. Due to the elastic buffering nature of the spring itself, the fixed plate will not damage the outer surface of the cable while pressing against the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the side section structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the control panel structure in the present invention;

[0024] Figure 4 It is a schematic diagram of the guide plate structure in the present invention;

[0025] Figure 5 It is a schematic diagram of the fixed plate structure in the present invention;

[0026] Figure 6 is a front view structural schematic diagram of the connecting shaft in the present invention;

[0027] Figure 7 It is a right side structural schematic diagram of the connecting shaft in the present invention;

[0028] Figure 8 It is a schematic diagram of the structure in which the middle part of the through groove in the present invention is in a closed state;

[0029] Fig. 9 It is a schematic diagram of the structure in which the through groove and the cavity are in an open state in the present invention;

[0030] In the figure: 1-control plate; 2-guide plate; 3-fixed plate; 4-connecting shaft; 41-threaded portion; 42-connecting portion; 5-assembly block; 6-spring; 7-housing; 8-through slot; 9-regular hexagonal guide rail; 10-guide block; 11-slide rail; 12-handle; 13-block; 14-limiting slot; 15-guide seat; 16-guide slot. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In this embodiment, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , including a control panel 1, a handle 12 is integrally connected to the control panel 1, an assembly hole is provided on the handle 12, and the control panel 1 is convenient for fixing the control panel 1 by bolts and other tools, a guide panel 2 is provided on the control panel 1, and the guide panel 2 is sleeved on the outer peripheral side of the control panel 1, the control panel 1 and the guide panel 2 are relatively rotated, a guide notch is provided on the outer edge of the guide panel 2, and the handle 12 is placed in the guide notch to avoid hindering the movement of the handle 12;

[0034] The control disk 1 and the guide disk 2 are both provided with a perforation in the center, and the two perforations are concentrically arranged, and the two perforations together form a through slot 8. The guide disk 2 is sleeved with a shell 7, and a through hole is opened at the bottom end of the shell 7, so that the through hole is connected with the through slot 8, which is convenient for passing the cable. A brim is provided on the outer peripheral side of the opening end of the shell 7, and a clamping block 13 is fixedly connected to the outer periphery of the guide disk 2. A limit clamping groove 14 is jointly provided on the shell 7 and the brim, and the clamping block 13 is clamped in the limit clamping groove 14; the brim is fixed to the travel switch by laser welding, and the brim limits the guide disk 2. When the structure is installed on the travel switch, the limit of the guide disk 2 is stabilized;

[0035] At the same time, the open end of the shell 7 is also fitted around the outer periphery of the control disk 1, and a limiting notch is set on the brim. The handle 12 is placed in the limiting notch to facilitate the rotation of the handle 12. The width of the limiting notch limits the rotation arc of the handle 12, thereby limiting the rotation arc of the control disk 1 to avoid the control disk 1 from getting stuck during the rotation process.

[0036] In this embodiment, refer to Figure 1 and Figure 5 A control mechanism is provided on the control panel 1 for adjusting the size of the through slot 8 in cooperation with the control panel 1. The control mechanism includes a regular hexagonal guide rail 9, which is provided on the control panel 1 and arranged between the outer circle and the inner circle of the control panel 1. A guide block 10 is slidably provided on each side of the regular hexagonal guide rail 9. A fixed plate 3 is fixedly connected to one end of the guide block 10 away from the regular hexagonal guide rail 9. An insulating rubber layer is provided on the outer surface of the fixed plate 3 to avoid wear on the cable and leakage. The guide block 10 drives the fixed plate 3 to slide on the corresponding side rail in the regular hexagonal guide rail 9. In the initial state, a plurality of fixed plates 3 are sequentially fitted to each other so that the middle position of the through slot 8 is in a closed state.

[0037] In this embodiment, refer to Figure 1 , Figure 2 and Figure 5 In order to coordinate with the multiple fixing plates 3 to stabilize the size of the through slot 8, each fixing plate 3 is connected with a fixing component, and multiple groups of fixing components are evenly spaced and distributed on the upper end of the guide plate 2, respectively, to coordinate with the corresponding fixing plates 3 to adjust and stabilize the size of the through slot 8, and the fixing component includes a slide rail 11, the slide rail 11 is arranged on the guide plate 2, the bottom of the slide rail 11 is through-set, and an assembly block 5 is slidably arranged in the slide rail 11, and a connecting shaft 4 is connected to the assembly block 5, and the end of the connecting shaft 4 away from the assembly block 5 passes through the bottom of the slide rail 11 and is connected to the upper end of the fixing plate 3, and the moving direction of the connecting shaft 4 is in the same direction as the length direction of the slide rail 11;

[0038] A plurality of guide seats 15 are provided at the edge of the guide plate 2, and the plurality of guide seats 15 are evenly spaced along the outer circumference of the guide plate 2. The plurality of guide seats 15 correspond one to one with the plurality of slide rails 11. A guide groove 16 is provided on the guide seat 15. One end of the spring 6 is fixedly connected to the assembly block 5, and the other end of the spring 6 abuts against the corresponding guide groove 16. The extension and contraction direction of the spring 6 is in the same direction as the sliding direction of the slide rail 11, which helps to guide and protect the spring 6.

[0039] Reference Figure 8 and Fig. 9In the initial state, the spring 6 is in a compressed state, exerting a certain thrust on the assembly block 5, and also exerting a certain thrust on the fixed plate 3. The six fixed plates 3 fit tightly in the through slot 8, so that the middle of the through slot 8 is in a closed state; the control disk 1 is driven to rotate by turning the handle 12, and at this time, each guide block 10 slides relatively on the corresponding side in the regular hexagonal guide rail 9, driving the fixed plate 3 to move accordingly, so that the multiple fixed plates 3 are no longer in a tightly fitted state, and at the same time, the fixed plate 3 also drives the connecting shaft 4 to move, and the assembly block 5 slides along the length direction of the slide rail 11 in linkage, and the spring 6 continues to be compressed, so that the six fixed plates 3 are The fixed plates 3 together form a cavity. As the rotation arc of the control disk 1 increases, the area of ​​the cavity gradually increases. Conversely, as the rotation arc of the control disk 1 decreases, the area of ​​the cavity gradually decreases. The cable is passed through the cavity, and the cavity of corresponding size is adjusted according to cables of different sizes. Multiple fixed plates 3 jointly press the cable into the cavity. At the same time, the spring 6 pushes the assembly block 5 toward the center of the guide disk 2 through its own force, and the fixed plate 3 is linked to always have a thrust toward the center of the control disk 1, so that the fixed plate 3 is always in an elastically tight state against the cable, and the handle 12 is fixed to the travel switch, thereby finally achieving the fixation of the cable.

[0040] Reference Figure 6 and Figure 7 The connecting shaft 4 consists of a threaded portion 41 and a connecting portion 42. The cross-sectional diameter length of the threaded portion 41 is smaller than the cross-sectional diameter length of the connecting portion 42. A nut is integrally connected to the end of the connecting portion 42 away from the threaded portion 41. A connecting hole is provided on the assembly block 5, and the connecting hole and the connecting portion 42 are clearance-matched. A guide column is fixedly connected to the upper end of the fixing plate 3. A threaded hole is provided on the upper end of the guide column, and the threaded hole is threadably matched with the threaded portion 41.

[0041] The connecting shaft 4 is passed through the assembly block 5 and the threaded portion 41 is matched with the threaded hole. The nut is against the upper end of the assembly block 5, so that the connecting shaft 4 connects the assembly block 5 and the fixing plate 3 together to achieve a linkage effect. The whole structure is easy to install and disassemble. As time goes by, when the cable ages and needs to be replaced, the fixing mechanism can be quickly disassembled, achieving an effect of convenient assembly and disassembly.

[0042] The working principle of this embodiment is as follows: the housing 7 is fixed to the bottom of the travel switch, the control disk 1 is rotated by turning the handle 12, the guide block 10 drives the fixed plate 3 to move relatively, and the multiple fixed plates 3 are collectively enclosed in a closed state to be converted into a multiple fixed plates 3 collectively enclose a cavity, the cable is passed through the through slot 8 and the cavity, the handle 12 is turned to adjust the size of the cavity, the multiple fixed plates 3 jointly resist the cable, and at the same time, the fixed plate 3 is pushed toward the center of the control disk 1 by the action force of the spring 6 itself, so that the fixed plate 3 elastically presses the cable, and at the same time, bolts are used to pass through the mounting holes on the handle 12 and fixed to the travel switch to fix the cable. The size of the cavity is highly flexible to adjust and is suitable for cables of different sizes. The fixed plate 3 has strong fastness to the cable and is easy to install.

[0043] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A cable fixing structure, characterized in that: The invention comprises a control disk (1), a guide disk (2) being arranged on the control disk (1), the control disk (1) and the guide disk (2) being arranged to rotate relative to each other, the middle parts of the control disk (1) and the guide disk (2) being penetrated to form a through slot (8), and a control mechanism being arranged on the control disk (1) for adjusting the size of the through slot (8) in cooperation with the control disk (1).

2. A cable fixing structure according to claim 1, characterized in that: The control mechanism comprises a regular hexagonal guide rail (9), which is arranged on a control panel (1), and is arranged between an outer circle and an inner circle of the control panel (1). A guide block (10) is slidably arranged on each side of the regular hexagonal guide rail (9), and a fixed plate (3) is connected to one end of the guide block (10) away from the regular hexagonal guide rail (9); each fixed plate (3) is connected to a fixed component, and a plurality of groups of fixed components are respectively distributed at equal intervals on the upper end of the guide panel (2), and cooperate with the corresponding fixed plates (3) to adjust and stabilize the size of the through slot (8); in an initial state, the plurality of fixed plates (3) are sequentially fitted to each other, so that the middle position of the through slot (8) is in a closed state.

3. A cable fixing structure according to claim 2, characterized in that: The fixing assembly comprises a slide rail (11), the slide rail (11) is arranged on the guide plate (2), the bottom of the slide rail (11) is arranged to penetrate, an assembly block (5) is slidably arranged in the slide rail (11), the assembly block (5) is connected with a connecting shaft (4), the end of the connecting shaft (4) away from the assembly block (5) passes through the bottom of the slide rail (11) and is connected to the upper end of the fixing plate (3), and the moving direction of the connecting shaft (4) is in the same direction as the length direction of the slide rail (11); a spring (6) is connected to one side of the assembly block (5), the end of the spring (6) away from the assembly block (5) is connected to the edge of the guide plate (2), and the extension direction of the spring (6) is in the same direction as the sliding direction of the slide rail (11).

4. A cable fixing structure according to claim 3, characterized in that: The connecting shaft (4) is composed of a threaded portion (41) and a connecting portion (42). The cross-sectional diameter length of the threaded portion (41) is smaller than the cross-sectional diameter length of the connecting portion (42). A nut is integrally connected to one end of the connecting portion (42) away from the threaded portion (41). A connecting hole is provided on the assembly block (5). The connecting hole and the connecting portion (42) are clearance-matched. A guide column is fixedly connected to the upper end of the fixing plate (3). A threaded hole is provided on the upper end of the guide column. The threaded hole and the threaded portion (41) are threadedly matched.

5. A cable fixing structure according to claim 1, characterized in that: The guide plate (2) is provided with a shell (7), the bottom end of the shell (7) is provided with a through hole, the through hole is communicated with the through slot (8), the outer peripheral side of the opening end of the shell (7) is provided with a cap brim, and the opening end of the shell (7) is also arranged in close contact with the outer periphery of the control plate (1).

6. A cable fixing structure according to claim 1, characterized in that: A handle (12) is provided on the control panel (1), and an assembly hole is provided on the handle (12).

7. A cable fixing structure according to claim 6, characterized in that: A limiting notch is arranged on the brim of the hat, and the handle (12) is placed in the limiting notch.

8. A cable fixing structure according to claim 1, characterized in that: A clamping block (13) is fixedly connected to the outer periphery of the guide plate (2), and a limiting clamping groove (14) is provided on the outer shell (7) and the brim of the cap, and the clamping block (13) is clamped in the limiting clamping groove (14).

9. A cable fixing structure according to claim 3, characterized in that: A plurality of guide seats (15) are arranged at the edge of the guide plate (2), the plurality of guide seats (15) are distributed at equal intervals along the outer circumference of the guide plate (2), the plurality of guide seats (15) correspond to the plurality of slide rails (11) one by one, a guide groove (16) is provided on the guide seat (15), and one end of the spring (6) abuts against the corresponding guide groove (16).

10. A cable fixing structure according to claim 2, characterized in that: An insulating rubber layer is provided on the outer surface of the fixing plate (3).

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