Cable assembly unlocking tool and removal method

Abstract

The present invention relates to a cable release tool and a method for removing a cable assembly. The release tool comprises: a first tool half (10a) with a first half-cylinder portion (11a), a first mounting portion (12a), and a first connecting portion (13a) between them; and a second tool half (10b) with a second half-cylinder portion (11b), a second mounting portion (12b), and a second connecting portion (13b). The first and second mounting portions (12a, 12b) are rotationally connected, allowing the tool halves to open and close in a rotational manner.When closed, the half-cylinder sections (11a, 11b) form a complete cylindrical end section (11) that fits onto a cable (21) and inserts into a mounting hole (31) to push multiple locking springs (32) to an unlocked position, allowing the cable assembly (2) to be removed with the unlocking tool (1). The tool has a simple structure, is easy to use, and allows for one-handed operation. Fig. 3.

Description

Title of the invention: Cable assembly unlocking tool and removal method

[0001] TECHNOLOGICAL BACKGROUND OF THE INVENTION Scope of the invention

[0002] The present invention relates to a release tool and a method for removing a cable assembly from a connector housing by means of the release tool. Description of the previous technique

[0003] In the prior art, a connector generally includes a connector housing and a cable assembly. The cable assembly includes a cable and a terminal attached to the end of the cable. The terminal of the cable assembly is inserted into the mounting hole of the connector housing. Multiple locking springs are provided in the connector housing, which engage with the terminal of the cable assembly to lock the terminal of the cable assembly in the connector housing. When it is necessary to remove the cable assembly from the connector housing, it is necessary to use a release tool to simultaneously push several locking springs inside the connector housing to the release position, where they are detached from the terminal of the cable assembly.In the earlier technique, the unlocking tool generally includes two semi-circular cylindrical components that can be fixed together to form a complete cylindrical component. However, the unlocking tool requires two hands to operate simultaneously, which is impractical in use. SUMMARY OF THE INVENTION

[0004] The present invention was made to overcome or mitigate at least one aspect of the disadvantages mentioned above.

[0005] According to one aspect of the present invention, an unlocking tool is provided. The unlocking tool comprises: a first tool half comprising a first half-cylinder portion and a first mounting portion located at its two ends, respectively, and a first connecting portion connected between the first half-cylinder portion and the first mounting portion; and a second tool half comprising a second half-cylinder portion and a second mounting portion located at its two ends, respectively, and a second connecting portion connected between the second half-cylinder portion and the second mounting portion. The first and second mounting portions are rotationally connected to each other so that the first and second tool halves can be opened and closed in a rotational manner, and the first and second half-cylinder parts are combined into a complete cylindrical end portion when the first and second tool halves are closed; the cylindrical end portion is adapted to be fitted onto a cable of a cable assembly and is adapted to be inserted into a mounting hole in a connector housing in order to simultaneously push multiple locking springs engaging with the terminal of the cable assembly to a separate unlocking position from the terminal, so that the cable assembly can be removed with the unlocking tool.

[0006] According to an example of an embodiment of the present invention, when the first tool half and the second tool half are closed, the lateral edge of the first half-cylinder and the lateral edge of the second half-cylinder are in contact with each other, so that the first half-cylinder and the second half-cylinder are combined into the complete cylindrical end part.

[0007] According to another embodiment of the present invention, when the first tool half and the second tool half are closed, the lateral edge of the first half-cylinder and the lateral edge of the second half-cylinder are not in contact, with a predetermined space between them, and the width of the predetermined space in the circumferential direction of the cylindrical end portion is less than the width of the locking spring in the circumferential direction.

[0008] According to another embodiment of the present invention, when the first tool half and the second tool half are closed, the first connecting part and the second connecting part are combined into a semi-cylindrical body with one open side, so that the unlocking tool and the cable assembly can be removed together with one hand by simultaneously squeezing the semi-cylindrical body and the cable housed in the semi-cylindrical body with one hand.

[0009] According to another embodiment of the present invention, the first connecting part and the second connecting part each have a quarter-cylinder shape, allowing them to be combined into the semi-cylindrical body.

[0010] According to another embodiment of the present invention, the first mounting part comprises a first end plate connected to the end of the first connecting part and a first horizontal plate connected to the first end plate; the second mounting part comprises a second end plate connected to the end of the second connecting part and a second horizontal plate connected to the second end plate; the first horizontal plate and the second horizontal plate are spaced apart and opposite each other and are connected together in a rotational manner, so that the first tool half and the second tool half can be opened and closed by rotation.

[0011] According to another embodiment of the present invention, the unlocking tool further comprises a first bolt which passes through the first horizontal plate and is screwed with the second horizontal plate, allowing the first half of the tool to rotate relative to the second half of the tool around the first bolt.

[0012] According to another embodiment of the present invention, a pivot hole suitable for rotatably pairing with a smooth shank portion of the first bolt is formed in the first horizontal plate, and a first threaded hole suitable for a threaded connection with a threaded portion of the first bolt is formed in the second horizontal plate.

[0013] According to another embodiment of the present invention, the unlocking tool further comprises a first nut which is provided on the outside side of the second horizontal plate oriented opposite to the first horizontal plate, for a screw connection with the end of the first bolt, the head of the first bolt is pressed against the outside side of the second horizontal plate oriented opposite to the first horizontal plate, and the end of the first bolt is exposed from the outside side of the second horizontal plate and screwed with the first nut.

[0014] According to another embodiment of the present invention, an elongated limit hole is formed in the first horizontal plate, and a second threaded hole is formed in the second horizontal plate; the unlocking tool further includes a second bolt, which passes through the limit hole and is screwed with the second threaded hole; the second bolt can be moved between two ends of the limit hole, allowing the first tool half to rotate relative to the second tool half within a predetermined angle range.

[0015] According to another embodiment of the present invention, when the first tool half and the second tool half are open, the inner wall surface of one end of the limit hole is pressed against the second bolt to restrict the first tool half and the second tool half to a predetermined open position.

[0016] According to another embodiment of the present invention, when the first tool half and the second tool half are in the predetermined open position, the opening angle between the first tool half and the second tool half is not greater than 20 degrees.

[0017] According to another embodiment of the present invention, the limit hole is located between the first end plate and the pivot hole, and the second threaded hole is located between the second end plate and the first threaded hole.

[0018] According to another embodiment of the present invention, the unlocking tool further comprises a second nut which is provided on the outside side of the second horizontal plate oriented opposite to the first horizontal plate, for a screw connection with the end of the second bolt, the head of the second bolt is pressed against the outside side of the first horizontal plate oriented opposite to the second horizontal plate, and the end of the second bolt is exposed from the outside side of the second horizontal plate and screwed with the second nut.

[0019] According to another embodiment of the present invention, the unlocking tool further comprises a reset torsion spring, which is installed between the first mounting part and the second mounting part, to reset the first tool half and the second tool half to the predetermined open position.

[0020] According to another embodiment of the present invention, the first mounting part further comprises a first vertical plate connected to one side of the first horizontal plate and the first end plate, and the second mounting part further comprises a second vertical plate connected to one side of the second horizontal plate and the second end plate, the first vertical plate and the second vertical plate are spaced apart and opposite each other; the spiral body of the reset torsion spring is fitted onto the first bolt and located between the first horizontal plate and the second horizontal plate, two torsion arms of the reset torsion spring rest respectively on the inner sides of the first vertical plate and the second vertical plate.

[0021] According to another aspect of the present invention, a method for disconnecting a cable assembly is provided. The method comprises the following steps:

[0022] S10: provide the above unlocking tool;

[0023] S20: Grasp the unlocking tool in the open position with one hand and move it towards a cable from a cable assembly, so that the cable from the cable assembly enters between the first half-cylinder and the second half-cylinder of the unlocking tool;

[0024] S30: Enter the first part of the connection and the second part of the connection of the one-handed unlocking tool, so that the unlocking tool is rotated from the open position to the closed position;

[0025] S40: Insert the cylindrical end portion of the unlocking tool into a mounting hole in a connector housing, so as to simultaneously push several locking springs inside the connector housing to a separate unlocking position from a terminal of the cable assembly through the cylindrical end portion;

[0026] S50: tighten the semi-cylindrical body of the unlocking tool and the cable of a hold the release tool and cable assembly outwards simultaneously to remove them together from the connector housing.

[0027] In the examples of embodiments mentioned above according to the present invention, the unlocking tool has a simple structure, is easy to use and can remove the cable assembly from the connector housing with one hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above-mentioned features of the present invention, as well as others, will become more apparent by describing in detail exemplary embodiments thereof with reference to the accompanying drawings, in which:

[0029] Fig. 1 is an illustrative view of an unlocking tool according to an example of an embodiment of the present invention, in which the unlocking tool is in an open position;

[0030] Fig. 2 is an illustrative view of an unlocking tool according to an example of an embodiment of the present invention, in which the unlocking tool is in a closed position;

[0031] Fig. 3 is an exploded view illustrative of an unlocking tool according to an example of an embodiment of the present invention when viewed from a certain side;

[0032] Fig. 4 is an exploded view illustrative of an unlocking tool according to an example of an embodiment of the present invention when viewed from another side;

[0033] Fig. 5 is a longitudinal cross-sectional view of an unlocking tool according to an example of an embodiment of the present invention;

[0034] Fig. 6 is an illustrative top view of a connector according to an example embodiment of the present invention;

[0035] Fig. 7 is an illustrative view of the adjustment of the unlocking tool on the cable assembly and its insertion towards the connector housing;

[0036] Figure 8 is an illustrative view of the insertion of the cylindrical end portion of the unlocking tool into the mounting hole of the connector housing; and

[0037] Fig. 9 is an illustrative view of the removal of the unlocking tool and the cable assembly together from the connector housing. DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION

[0038] Exemplary embodiments of this description will be described in detail later with reference to the accompanying drawings, where identical numerals refer to identical elements. This disclosure can, however, be made in many different forms, and does not should not be regarded as being limited to the embodiments established herein; on the contrary, these embodiments are provided so that this disclosure is comprehensive and complete, and fully conveys the concept of disclosure to the person skilled in the art.

[0039] In the detailed description that follows, for the sake of explanation, numerous specific details are established to provide a complete understanding of the disclosed embodiments. It will become apparent, however, that one or more embodiments can be implemented without these specific details. In other cases, well-known structures and devices are represented schematically to simplify the drawing.

[0040] According to a general concept of the present invention, an unlocking tool is provided. The unlocking tool comprises: a first half of the tool comprising a first half-cylinder part and a first mounting part located respectively at the two ends thereof, and a first connecting part connected between the first half-cylinder part and the first mounting part; and a second half of the tool comprising a second half-cylinder part and a second mounting part located respectively at the two ends thereof, and a second connecting part connected between the second half-cylinder part and the second mounting part.The first and second mounting parts are rotationally connected to each other so that the first and second tool halves can be opened and closed rotationally, and the first and second half-cylinder parts are combined into a complete cylindrical end part when the first and second tool halves are closed; the cylindrical end part is adapted to be fitted onto a cable of a cable assembly and is adapted to be inserted into a mounting hole in a connector housing in order to simultaneously push multiple locking springs engaging with the terminal of the cable assembly to a separate unlocking position from the terminal, so that the cable assembly can be removed with the unlocking tool.

[0041] According to a general concept of the present invention, a method for disconnecting a cable assembly is provided. The method comprises the steps of: providing the above-mentioned unlocking tool; grasping the unlocking tool in the open position with one hand and moving it toward a cable of a cable assembly, such that the cable of the cable assembly enters between the first and second half-cylinders of the unlocking tool; grasping the first and second connecting parts of the unlocking tool tightly with one hand, so that the unlocking tool is rotated from the open to the closed position; inserting the cylindrical end portion of the unlocking tool into a mounting hole in a connector housing, so as to simultaneously push Multiple locking springs inside the connector housing move to a separate unlocking position from one terminal of the cable assembly through the cylindrical end portion; squeeze the semi-cylindrical body of the unlocking tool and the cable with one hand, and simultaneously pull the unlocking tool and cable assembly outwards to remove them from the connector housing together.

[0042] Fig. 1 is an illustrative view of an unlocking tool 1 according to an exemplary embodiment of the present invention, in which the unlocking tool 1 is in an open position; Fig. 2 is an illustrative view of an unlocking tool 1 according to an exemplary embodiment of the present invention, in which the unlocking tool 1 is in a closed position; Fig. 3 is an illustrative exploded view of the unlocking tool 1 according to an exemplary embodiment of the present invention when viewed from one side; Fig. 4 is an illustrative exploded view of the unlocking tool 1 according to an exemplary embodiment of the present invention when viewed from the other side; Fig. 5 is a longitudinal sectional view of the unlocking tool 1 according to an exemplary embodiment of the present invention; Fig.[Fig. 6] is an illustrative top view of a connector according to an exemplary embodiment of the present invention; [Fig. 7] is an illustrative view of the adjustment of the unlocking tool 1 onto the cable assembly 2 and its insertion into the connector housing 3; [Fig. 8] is an illustrative view of the insertion of the cylindrical end portion 11 of the unlocking tool 1 into the mounting hole 31 of the connector housing 3; [Fig. 9] is an illustrative view of the removal of the unlocking tool 1 and the cable assembly 2 from the connector housing 3.

[0043] As shown in Figures 1 to 9, in an exemplary embodiment of the present invention, an unlocking tool 1 is disclosed. The unlocking tool 1 includes a first tool half 10a and a second tool half 10b. The first tool half 10a includes a first half-cylinder portion 1la and a first mounting portion 12a located at its two ends, respectively, and a first connecting portion 13a connected between the first half-cylinder portion 1la and the first mounting portion 12a. The second tool half 10b includes a second half-cylinder portion 11b and a second mounting portion 12b located at its two ends, respectively, and a second connecting portion 13b connected between the second half-cylinder portion 11b and the second mounting portion 12b.

[0044] As shown in Figures 1 to 9, in the illustrated embodiment, the first mounting part 12a and the second mounting part 12b are rotationally connected, allowing the first tool half 10a and the second tool half 10b to be opened and closed rotationally. The first half-cylinder part 1a and second half-cylinder part 11b are combined into a hollow cylindrical end part 11 when the first tool half 10a and the second tool half 10b are closed.

[0045] As shown in Figures 1 to 9, in the illustrated embodiment, the cylindrical end portion 11 of the unlocking tool 1 is adapted to be fitted onto the cable 21 of the cable assembly 2 and is adapted to be inserted into the mounting hole 31 of the connector housing 3, in order to simultaneously push the multiple locking springs 32 engaging with the terminal 22 of the cable assembly 2 towards the unlocking position separate from the terminal 22, so that the cable assembly 2 can be removed with the unlocking tool 1.

[0046] As shown in Figures 1 to 9, in the illustrated embodiment, when the first tool half 10a and the second tool half 10b are closed, the lateral edges of the first half-cylinder part 1la and the second half-cylinder part 11b are in contact with each other, so that the first half-cylinder part 1la and the second half-cylinder part 11b are combined into a complete cylindrical end part 11.

[0047] However, it should be noted that the present invention is not limited to the illustrated embodiment. For example, in another embodiment of the present invention, when the first tool half 10a and the second tool half 10b are closed, the lateral edges of the first half-cylinder 11a and the second half-cylinder 11b are not in contact, and there is a predetermined gap between them. The width of this predetermined gap in the circumferential direction of the cylindrical end portion 11 is less than the width of the locking spring 32 in the circumferential direction. This can prevent interference problems caused by manufacturing errors.

[0048] As shown in Figures 1 to 9, in the illustrated embodiment, when the first tool half 10a and the second tool half 10b are closed, the first connecting part 13a and the second connecting part 13b are combined into a semi-cylindrical body 13 with one open side, so that the semi-cylindrical body 13 and the cable 21 received in the semi-cylindrical body 13 can be tightened simultaneously with one hand, and the unlocking tool 1 and the cable assembly 2 can be removed together with one hand.

[0049] As shown in Figures 1 to 9, in the illustrated embodiment, the first connecting part 13a and the second connecting part 13b each have the shape of a quarter cylinder, allowing them to be combined into a semi-cylindrical body 13.

[0050] As shown in Figures 1 to 9, in the illustrated embodiment, the first mounting part 12a includes a first end plate 121a connected at the end of the first connecting part 13a and a first horizontal plate 122a connected to the first end plate 121a. The second mounting part 12b includes a second end plate 121b connected to the end of the second connecting part 13b, and a second horizontal plate 122b connected to the second end plate 121b. The first horizontal plate 122a and the second horizontal plate 122b are spaced and opposite each other and are rotationally connected, so that the first tool half 10a and the second tool half 10b can be opened and closed by rotation.

[0051] As shown in Figures 1 to 9, in the illustrated embodiment, the unlocking tool 1 further includes a first bolt 14, which passes through the first horizontal plate 122a and is screwed with the second horizontal plate 122b, such that the first half of tool 10a can rotate relative to the second half of tool 10b around the first bolt 14.

[0052] As shown in Figures 1 to 9, in the illustrated embodiment, a pivot hole 124a suitable for rotationally pairing with a smooth shank portion of the first bolt 14 is formed in the first horizontal plate 122b, and a first threaded hole 124b suitable for a screw connection with a threaded portion of the first bolt 14 is formed in the second horizontal plate 122b.

[0053] As shown in Figures 1 to 9, in the illustrated embodiment, the unlocking tool 1 further comprises a first nut 17, which is arranged on the outer side of the second horizontal plate 122b oriented opposite to the first horizontal plate 122a, for a screw connection with the end of the first bolt 14. The head of the first bolt 14 is pressed against the outer side of the second horizontal plate 122b oriented opposite to the first horizontal plate 122a, and the end of the first bolt 14 is exposed from the outer side of the second horizontal plate 122b and screwed with the first nut 17.

[0054] As shown in Figures 1 to 9, in the illustrated embodiment, an elongated limit hole 125a is formed in the first horizontal plate 122a, and a second threaded hole 125b is formed in the second horizontal plate 122b. The unlocking tool 1 also includes a second bolt 15, which passes through the limit hole 125a and is screwed into the second threaded hole 125b. The second bolt 15 can move between the two ends of the limit hole 125a, allowing the first tool half 10a to rotate relative to the second tool half 10b within a predetermined angle range.

[0055] As shown in Figures 1 to 9, in the illustrated embodiment, when the first tool half 10a and the second tool half 10b are opened, the inner wall surface of one end of the boundary hole 125a is pressed against the second bolt 15 to restrict the first half of tool 10a and the second half of tool 10b to the predetermined open position.

[0056] As shown in Figures 1 to 9, in the illustrated embodiment, when the first tool half 10a and the second tool half 10b are in the predetermined open position, the opening angle between the first tool half 10a and the second tool half 10b is not greater than 20 degrees.

[0057] As shown in Figures 1 to 9, in the illustrated embodiment, the limit hole 125a is located between the first end plate 121a and the pivot hole 124a, and the second threaded hole 125b is located between the second end plate 121b and the first threaded hole 124b.

[0058] As shown in Figures 1 to 9, in the illustrated embodiment, the unlocking tool 1 further includes a second nut 18, which is provided on the outside of the second horizontal plate 122b oriented opposite to the first horizontal plate 122a, for a screw connection with the end of the second bolt 15. The head of the second bolt 15 is pressed against the outside of the first horizontal plate 122b oriented opposite to the second horizontal plate 122b, and the end of the second bolt 15 is exposed from the outside of the second horizontal plate 122b and screwed with the second nut 18.

[0059] As shown in Figures 1 to 9, in the illustrated embodiment, the unlocking tool 1 further includes a reset torsion spring 16, which is installed between the first mounting part 12a and the second mounting part 12b to reset the first tool half 10a and the second tool half 10b to the predetermined open position.

[0060] As shown in Figures 1 to 9, in the illustrated embodiment, the first mounting part 12a further includes a first vertical plate 123a connected to a certain side of the first horizontal plate 122a and the first end plate 121a, and the second mounting part 12b further includes a second vertical plate 123b connected to a certain side of the second horizontal plate 122b and the second end plate 121b, the first vertical plate 123a and the second vertical plate 123b being spaced apart. The spiral body 160 of the reset torsion spring 16 is fitted onto the first bolt 14 and located between the first horizontal plate 122a and the second horizontal plate 122b. The two torsion arms 161 of the reset torsion spring 16 are respectively pressed against the inner sides of the first vertical plate 123a and the second vertical plate 123b.

[0061] As shown in Figures 1 to 9, in another embodiment of the present invention, a method for disconnecting a cable assembly is also described. The procedure for disconnecting the cable assembly includes the following steps:

[0062] S10: supply the unlocking tool 1 mentioned above;

[0063] S20: Grasp the unlocking tool 1 in the open position with one hand and move it towards cable 21 of cable assembly 2, such that cable 21 of cable assembly 2 enters between the first half-tube part 1la and the second half-tube part 11b of unlocking tool 1;

[0064] S30: Enter the first part of connection 13a and the second part of connection 13b of the unlocking tool 1 in a tight manner with one hand, so that the unlocking tool 1 is turned from the open position to the closed position;

[0065] S40: Insert the cylindrical end part 11 of the unlocking tool 1 in the mounting hole 31 in the connector housing 3, so as to simultaneously push the multiple locking springs 32 inside the connector housing 3 towards the separate unlocking position of the terminal 22 of the cable assembly 2 through the cylindrical end portion 11;

[0066] S50: Tighten the semi-circular cylinder 13 of the unlocking tool 1 and the cable 21 with one hand and pull the unlocking tool 1 and the cable assembly 2 outwards at the same time, in order to pull the unlocking tool 1 and the cable assembly 2 together out of the connector housing 3.

[0067] A person skilled in the art will appreciate that the embodiments are intended to be illustrative, and not restrictive. For example, many modifications can be made by a person skilled in the art to the above embodiments, and various features described in different embodiments can be freely combined without conflict of configuration or principle.

[0068] Although several exemplary embodiments have been shown and described, a person skilled in the art will appreciate that various changes or modifications can be made to these embodiments without departing from the principles or spirit of the disclosure.

[0069] As used herein, an element indicated in the singular and referred to as "a" or "an" shall be understood as not excluding a plurality of such elements or steps, unless such exclusion is explicitly stated. Furthermore, references to "an embodiment" of the present invention are not intended to be interpreted as excluding the existence of additional embodiments that also incorporate the indicated features. Moreover, unless explicitly stated otherwise, embodiments "comprising" or "featuring" an element or plurality of elements having a particular property may include further such elements not having that property.

Claims

Demands

1. Unlocking tool, comprising: a first half of tool (10a) comprising a first half-cylinder part (11a) and a first mounting part (12a) located respectively at its two ends, and a first connecting part (13a) connected between the first half-cylinder part (11a) and the first mounting part (12a); and a second tool half (10b) comprising a second half-cylinder part (11b) and a second mounting part (12b) situated respectively at its two ends, and a second connecting part (13b) connected between the second half-cylinder part (11b) and the second mounting part (12b), wherein the first and second mounting parts (12a, 12b) are rotationally connected to each other so that the first and second tool halves (10a, 10b) can be rotationally opened and closed, and the first and second half-cylinder parts (11a, 12b)11b) are combined into a complete cylindrical end portion (11) when the first and second tool halves (10a, 10b) are closed, wherein the cylindrical end portion (11) is adapted to be fitted onto a cable (21) of a cable assembly (2) and is adapted to be inserted into a mounting hole (31) in a connector housing (3) to simultaneously push multiple locking springs (32) engaging with the terminal (22) of the cable assembly (2) to a separate unlocking position from the terminal (22), so that the cable assembly (2) can be removed with the unlocking tool (1).

2. Unlocking tool according to claim 1, wherein when the first tool half (10a) and the second tool half (10b) are closed, the lateral edge of the first half-cylinder (1la) and the lateral edge of the second half-cylinder (11b) are in contact with each other, so that the first half-cylinder (1la) and the second half-cylinder (11b) are combined into the complete cylindrical end portion (11).

3. Unlocking tool according to claim 1, wherein when the first tool half (10a) and the second tool half (10b) are closed, the lateral edge of the first half- cylinder (1a) and the lateral edge of the second half-cylinder (11b) are not in contact, a predetermined space between them, and the width of the predetermined space in the circumferential direction of the cylindrical end part (11) is less than the width of the locking spring (32) in the circumferential direction.

4. Unlocking tool according to claim 1, wherein when the first tool half (10a) and the second tool half (10b) are closed, the first connecting part (13a) and the second connecting part (13b) are combined into a semi-cylindrical body (13) with one open side, so that the unlocking tool (1) and the cable assembly (2) can be removed together with one hand by simultaneously squeezing the semi-cylindrical body (13) and the cable (21) housed in the semi-cylindrical body (13) with one hand.

5. Unlocking tool according to claim 4, wherein the first connecting part (13a) and the second connecting part (13b) each have a quarter-cylinder shape, allowing them to be combined into the semi-cylindrical body (13).

6. Unlocking tool according to claim 1, wherein the first mounting part (12a) comprises a first end plate (121a) connected to the end of the first connecting part (13a) and a first horizontal plate (122a) connected to the first end plate (121a); ​​wherein the second mounting part (12b) comprises a second end plate (121b) connected to the end of the second connecting part (13b) and a second horizontal plate (122b) connected to the second end plate (121b); wherein the first horizontal plate (122a) and the second horizontal plate (122b) are spaced and opposite to each other and are rotationally connected together, such that the first tool half (10a) and the second tool half (10b) can be opened and closed by rotation.

7. Unlocking tool according to claim 6, further comprising: a first bolt (14) which passes through the first horizontal plate (122b) and is screwed to the second horizontal plate (122b), by allowing the first tool half (10a) to rotate relative to the second tool half (10b) around the first bolt (14).

8. Unlocking tool according to claim 7, wherein a pivot hole (124a) suitable for rotatably pairing with a smooth shank portion of the first bolt (14) is formed in the first horizontal plate (122b), and a first threaded hole (124b) suitable for a screw connection with a threaded portion of the first bolt (14) is formed in the second horizontal plate (122b).

9. Unlocking tool according to claim 8, further comprising: a first nut (17) which is provided on the outside side of the second horizontal plate (122b) oriented opposite to the first horizontal plate (122a), for a screw connection with the end of the first bolt (14), wherein the head of the first bolt (14) is pressed against the outside side of the second horizontal plate (122b) oriented opposite to the first horizontal plate (122a), and the end of the first bolt (14) is exposed from the outside side of the second horizontal plate (122b) and screwed with the first nut (17).

10. Unlocking tool according to claim 8, wherein an elongated limit hole (125a) is formed in the first horizontal plate (122a), and a second threaded hole (125b) is formed in the second horizontal plate (122b); wherein the unlocking tool (1) further comprises a second bolt (15), which passes through the limit hole (125a) and is screwed into the second threaded hole (125b); wherein the second bolt (15) can be moved between two ends of the limit hole (125a), allowing the first tool half (10a) to rotate relative to the second tool half (10b) within a predetermined angle range.

11. Unlocking tool according to claim 10, wherein when the first tool half (10a) and the second tool half (10b) are open, the inner wall surface of one end of the limit hole (125a) is pressed against the second bolt (15) to restrict the first tool half (10a) and the second tool half (10b) to a predetermined open position.

12. Unlocking tool according to claim 11, wherein, when the first tool half (10a) and the second tool half (10b) are in the predetermined open position, the opening angle between the first tool half (10a) and the second tool half (10b) is not greater than 20 degrees.

13. Unlocking tool according to claim 10, wherein the limit hole (125a) is located between the first end plate (121a) and the pivot hole (124a), and the second threaded hole (125b) is located between the second end plate (121b) and the first threaded hole (124b).

14. Unlocking tool according to claim 10, further comprising: a second nut (18) which is provided on the outside side of the second horizontal plate (122b) oriented opposite to the first horizontal plate (122a), for a screw connection with the end of the second bolt (15), wherein the head of the second bolt (15) is pressed against the outside side of the first horizontal plate (122b) oriented opposite to the second horizontal plate (122b), and the end of the second bolt (15) is exposed from the outside side of the second horizontal plate (122b) and screwed with the second nut (18).

15. Unlocking tool according to claim 11, wherein the unlocking tool (1) further comprises a reset torsion spring (16), which is installed between the first mounting part (12a) and the second mounting part (12b), to reset the first tool half (10a) and the second tool half (10b) to the predetermined open position.

16. Unlocking tool according to claim 15, wherein the first mounting part (12a) further comprises a first vertical plate (123a) connected to one side of the first horizontal plate (122b) and the first end plate (121a), and the second mounting part (12b) further comprises a second vertical plate (123b) connected to one side of the second horizontal plate (122b) and the second end plate (121b), the first vertical plate (123a) and the second vertical plate (123b) being spaced apart and opposite each other;

17. in which the spiral body (160) of the reset torsion spring (16) is fitted onto the first bolt (14) and located between the first horizontal plate (122a) and the second horizontal plate (122b), two torsion arms (161) of the reset torsion spring (16) resting respectively on the inner sides of the first vertical plate (123a) and the second vertical plate (123b). A method for disconnecting a cable assembly, comprising the steps of: S10: supply the unlocking tool (1) according to any one of claims 1 to 16; S20: grasp the unlocking tool (1) in the open position with one hand and move it towards a cable (21) of a cable assembly (2), so that the cable (21) of the cable assembly (2) enters between the first half-cylinder (1la) and the second half-cylinder (11b) of the unlocking tool (1); S30: grasp the first connecting part 13a and the second connecting part 13b of the unlocking tool 1 tightly with one hand, so that the unlocking tool 1 is turned from the open position to the closed position; S40: Insert the cylindrical end portion (11) of the unlocking tool (1) into a mounting hole (31) in a connector housing (3), so as to simultaneously push several locking springs (32) inside the connector housing (3) to a separate unlocking position from a terminal (22) of the cable assembly (2) through the cylindrical end portion (11); S50: Squeeze the semi-cylindrical body (13) of the unlocking tool (1) and the cable (21) with one hand, and simultaneously pull the unlocking tool (1) and the cable assembly (2) outwards to remove them together from the connector housing (3).

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