Structure for preventing wire breakage by using a boss of an outlet box

Abstract

The utility model relates to the technical field of wiring harness connection, and disclose a kind of structure for preventing wire breakage using outlet box boss, including box body, the wire rack is fixedly connected in box body bottom, box body top is fixedly connected with convex box, buffer assembly is installed in box body inner wall, and buffer assembly is used to buffer the tension of wire rod, the buffer assembly includes elastic component, and elastic component is fixedly installed in box body inner wall, the connecting block is fixedly connected in elastic component end, and first rotating column is rotatably connected in connecting block inner wall;This structure for preventing wire breakage using outlet box boss, using the two groups of opposite elastic components of box body inner cavity, so that first pulley one group is located at box body top, another group is located at box body bottom, and wire rod is restricted by two groups of first pulley, from first pulley side wall, so that wire rod exists redundant length in box body inner cavity, when wire rod is stretched, two groups of first pulley will move to middle, to buffer the tension of wire rod, to protect wire rod.

Description

Technical Field

[0001] This utility model relates to the field of wire harness connection technology, specifically a structure that uses the protrusion of the wire outlet box to prevent wire breakage. Background Technology

[0002] Permanent magnet stepper motors use permanent magnet steel for their rotors. The stator of such stepper motors is processed into claw-shaped teeth by stamping, and the rotor uses radially multi-pole magnetized permanent magnet steel. It is mainly energized by connecting the wire harness to its internal circuit board. In the prior art, after the wire harness of the permanent magnet stepper motor is welded to the circuit board, the wire harness extends directly out of the motor body through the outlet of the outlet box. This makes it easy for the wire harness to break at the weld when subjected to external force. Among them, the announcement number: CN 219740070 U, discloses a structure that uses the outlet box boss to prevent wire breakage, including a first outlet box and a second outlet box. The side walls of the first outlet box and the second outlet box are fixedly connected. The inner walls of the first outlet box and the second outlet box are provided with placement grooves. The placement grooves are mountain-shaped and the circuit board is placed in the placement grooves. The top of the first outlet box is provided with a duct groove. The inner wall of the first outlet box between the duct groove and the placement groove is provided with a boss. This utility model, through the design of the boss, can change both the direction of wire harness exit and the direction of force on the wire harness, thereby reducing the force at the solder joint of the circuit board, thus reducing the risk of wire harness breakage caused by external force, protecting the motor, and avoiding the risk of wire harnesses extending directly out of the motor body through the wire outlet of the wire box in the prior art, which makes the wire harness prone to breakage at the solder joint after being subjected to external force, thus affecting the normal use of the motor.

[0003] However, the above solution has the following shortcomings in actual use: after the wire harness is subjected to external force, the friction generated between the wire harness and the wire groove reduces the pulling force of the wire harness on the circuit board solder joint. However, long-term friction between the wire harness and the wire groove may lead to wire harness breakage or the outer skin being rubbed, which poses a risk. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a structure that uses a protrusion on the cable outlet box to prevent cable breakage, which has the advantage of protecting the cable and avoiding the problem of cable breakage under tension.

[0005] To achieve the purpose of protecting the wire, this utility model provides the following technical solution:

[0006] A structure for preventing wire breakage using a protrusion in a cable outlet box includes a box body, a cable holder fixedly connected to the bottom of the box body, a protruding box fixedly connected to the top of the box body, and a buffer assembly installed on the inner wall of the box body for buffering the tensile force of the wire. The structure also includes:

[0007] The buffer assembly includes an elastic component, which is fixedly installed on the inner wall of the box. A connecting block is fixedly connected to the end of the elastic component. A first rotating column is rotatably connected to the inner wall of the connecting block. A first rotating wheel is fixedly connected to the side wall of the first rotating column. The first rotating wheel is slidably connected to the wire. The buffer assembly is provided in two sets, one set is installed on the top wall of the box, and the other set is installed on the bottom wall of the box.

[0008] According to some embodiments, both sides of the inner wall of the convex box are fixedly connected to elastic components identical to those in the inner cavity of the box. A mounting bracket is fixedly connected to the end of the elastic component in the inner cavity of the convex box. A second rotating column is rotatably connected to the inner wall of the mounting bracket. A second rotating wheel is fixedly connected to the side wall of the second rotating column, and the wire is located between the second rotating wheels.

[0009] According to some embodiments, the top of the convex box is provided with a square groove, and the wire passes through the square groove. The side walls of the first and second rotating wheels are both provided with grooves. The elastic component includes a sleeve, which is fixedly installed on the inner wall of the box body or the convex box. A sliding column is slidably connected to the inner wall of the sleeve, and a spring is fixedly connected between the sliding column and the inner wall of the sleeve.

[0010] Beneficial effects

[0011] This utility model provides a structure that uses a protrusion in the cable outlet box to prevent wire breakage, which has the following beneficial effects:

[0012] (1) The structure that uses the protrusion of the outlet box to prevent wire breakage utilizes two sets of opposite elastic components in the inner cavity of the box, so that one set of first rotating wheels is located at the top of the box and the other set is located at the bottom of the box. The wire is restricted by the two sets of first rotating wheels and passes through the side wall of the first rotating wheels, so that the wire has redundant length in the inner cavity of the box. When the wire is stretched, both sets of first rotating wheels will move towards the middle to buffer the tension of the wire and thus protect the wire.

[0013] (2) The structure that uses the protrusion of the outlet box to prevent wire breakage, the wire passes through the protrusion box. After passing through, the wire will be at an angle. The elastic force of the elastic component is used to make the wire slide on the elastic component through the second rotating wheel. Thus, the elastic component is used to buffer the lateral tension generated by the wire. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the device of this utility model;

[0015] Figure 2 This is a partial cross-sectional structural diagram of the device of this utility model;

[0016] Figure 3 This is a structural schematic diagram (side section) of the convex box of this utility model;

[0017] Figure 4This is a structural schematic diagram (front section) of the elastic component of this utility model.

[0018] In the diagram: 1. Box body; 101. Wire frame; 102. Convex box; 103. Wire; 2. Buffer assembly; 201. Connecting block; 202. First rotating wheel; 3. Mounting bracket; 301. Second rotating wheel; 4. Square groove; 401. Sleeve; 402. Sliding column; 403. Spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Reference Figures 1-4 A structure for preventing wire breakage using a protrusion in a cable outlet box includes a box body 1, a cable holder 101 fixedly connected to the bottom of the box body 1, a protrusion box 102 fixedly connected to the top of the box body 1, and a buffer assembly 2 installed on the inner wall of the box body 1. The buffer assembly 2 is used to buffer the tensile force of the cable 103. The structure also includes:

[0021] The buffer assembly 2 includes an elastic component, which is fixedly installed on the inner wall of the box 1. A connecting block 201 is fixedly connected to the end of the elastic component. A first rotating column is rotatably connected to the inner wall of the connecting block 201. A first rotating wheel 202 is fixedly connected to the side wall of the first rotating column. The first rotating wheel 202 is slidably connected to the wire 103.

[0022] The buffer assembly 2 is provided in two sets, one set is installed on the top wall inside the box 1, and the other set is installed on the bottom wall inside the box 1.

[0023] It should be noted that the wire 103 passes through the box 1 from the wire frame 101 and then out through the convex box 102. The two sets of opposite elastic components inside the box 1 are used so that one set of first rotating wheels 202 is located at the top of the box 1 and the other set is located at the bottom of the box 1. The wire 103 is restricted by the two sets of first rotating wheels 202 and passes through the side wall of the first rotating wheels 202. This gives the wire 103 a redundant length inside the box 1. When the wire 103 is stretched, both sets of first rotating wheels 202 will move towards the middle to buffer the tension of the wire 103 and prevent the wire 103 from breaking.

[0024] Reference Figures 1-4 Both sides of the inner wall of the convex box 102 are fixedly connected with elastic components identical to those in the inner cavity of the box body 1, and a mounting bracket 3 is fixedly connected to the end of the elastic component in the inner cavity of the convex box 102.

[0025] The inner wall of the mounting bracket 3 is rotatably connected to a second rotating column, and the side wall of the second rotating column is fixedly connected to a second rotating wheel 301, and the wire 103 is located between the second rotating wheels 301;

[0026] It should be noted that: the wire 103 passes through the protruding box 102. After passing through, the wire 103 will be at an angle. Using the elastic force of the elastic component, the wire 103 drives the mounting bracket 3 to slide on the elastic component through the second rotating wheel 301. In this way, the elastic component buffers the lateral tension generated by the wire 103.

[0027] Reference Figures 1-4 The top of the convex box 102 is provided with a square groove 4, and the wire 103 passes through the square groove 4. The side walls of the first rotating wheel 202 and the second rotating wheel 301 are both provided with grooves.

[0028] The elastic component includes a sleeve 401, which is fixedly installed on the inner wall of the box 1 or the protruding box 102. A sliding post 402 is slidably connected to the inner wall of the sleeve 401, and a spring 403 is fixedly connected between the sliding post 402 and the inner wall of the sleeve 401.

[0029] It should be noted that the wire 103 passes through the square groove 4 at the top of the convex box 102 and slides on the inner wall of the square groove 4 to generate a lateral angle. When the elastic component is triggered, the sliding column 402 will slide in the inner cavity of the sleeve 401, thereby stretching or compressing the spring 403, causing the spring 403 to generate a rebound force, and using the rebound force of the spring 403 to buffer.

[0030] Operation method: The wire 103 passes through the box 1 from the wire frame 101 and then through the square groove 4 at the top of the convex box 102. After passing through, the wire 103 will be at an angle. Using the elastic force of the elastic component, the wire 103 drives the mounting bracket 3 to slide on the elastic component through the second rotating wheel 301. In this way, the elastic component buffers the lateral tension generated by the wire 103 and prevents the wire 103 from breaking.

[0031] Furthermore, by utilizing two sets of opposing elastic components within the inner cavity of the housing 1, one set of the first rotating wheels 202 is located at the top of the housing 1, and the other set is located at the bottom of the housing 1. The wire 103 is constrained by the two sets of first rotating wheels 202 and passes through the side wall of the first rotating wheels 202, thereby giving the wire 103 a redundant length within the inner cavity of the housing 1. When the wire 103 is stretched, both sets of first rotating wheels 202 will move towards the middle to buffer the tension of the wire 103 and prevent the wire 103 from breaking.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A structure for preventing wire breakage using a protrusion on a junction box, comprising a box body (1), characterized in that: The bottom of the box (1) is fixedly connected to a wire frame (101), the top of the box (1) is fixedly connected to a protruding box (102), and a buffer assembly (2) is installed on the inner wall of the box (1). The buffer assembly (2) is used to buffer the tension of the wire (103), and also includes: The buffer assembly (2) includes an elastic component, which is fixedly installed on the inner wall of the box (1). A connecting block (201) is fixedly connected to the end of the elastic component. A first rotating column is rotatably connected to the inner wall of the connecting block (201). A first rotating wheel (202) is fixedly connected to the side wall of the first rotating column. The first rotating wheel (202) is slidably connected to the wire (103).

2. The structure for preventing wire breakage using a terminal block boss according to claim 1, characterized in that: The buffer assembly (2) is provided in two sets, one set is installed on the top wall inside the box (1), and the other set is installed on the bottom wall inside the box (1).

3. The structure for preventing wire breakage using a terminal block boss according to claim 2, characterized in that: Both sides of the inner wall of the convex box (102) are fixedly connected with elastic components identical to those in the inner cavity of the box body (1), and an mounting bracket (3) is fixedly connected to the end of the elastic component in the inner cavity of the convex box (102).

4. The structure for preventing wire breakage using a terminal block boss according to claim 3, characterized in that: The mounting bracket (3) has a second rotating column rotatably connected to its inner wall, and a second rotating wheel (301) is fixedly connected to the side wall of the second rotating column, with the wire (103) located between the second rotating wheels (301).

5. The structure for preventing wire breakage using a terminal block boss according to claim 4, characterized in that: The top of the convex box (102) is provided with a square groove (4), and the wire (103) passes through the square groove (4). The side walls of the first rotating wheel (202) and the second rotating wheel (301) are both provided with grooves.

6. The structure for preventing wire breakage using a terminal block boss according to claim 5, characterized in that: The elastic component includes a sleeve (401), which is fixedly installed on the inner wall of the box (1) or the convex box (102). A sliding column (402) is slidably connected to the inner wall of the sleeve (401), and a spring (403) is fixedly connected between the sliding column (402) and the inner wall of the sleeve (401).

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