Miniature circuit breaker

Abstract

The invention provides a miniature circuit breaker, which comprises a shell, a handle, a connecting rod, a contact support, a lock catch, a lock catch elastic piece and a support elastic piece, and is characterized in that the shell is provided with an indication window; the handle is rotationally mounted on the shell; the connecting rod is provided with a first rod part connected with the handle and a second rod part matched with the contact support; and the contact support is rotationally installed on the shell through a rotating shaft, and a first indicating part which can be arranged corresponding to the indicating window is formed on the contact support. In an opening state, the first indication part of the contact support is arranged corresponding to the indication window. In a switching-on state, the second indicating part of the lock catch corresponds to the indicating window, and the contact support and the lock catch are different in color during injection molding, so that compared with the prior art in which indicating surfaces with different colors need to be processed on the contact support in an ink screen printing manner after injection molding, the production process is simpler, and the production efficiency is improved. And the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of low-voltage electrical appliances, and in particular to a miniature circuit breaker. Background Art

[0002] A small circuit breaker refers to a protective device installed in the terminal distribution line to prevent fire safety hazards caused by overload, short circuit and other faults, and ensure the safety of electricity use.

[0003] The operating mechanism of the existing small circuit breaker mainly includes a handle, a connecting rod and a contact bracket, etc. The moving contact is installed on the contact bracket. The handle drives the contact bracket to rotate through the connecting rod, so that the moving contact and the static contact are in contact or disconnected. The top of the shell of the small circuit breaker is provided with an indication window, and the top of the contact bracket is provided with an opening indication surface and a closing indication surface. In the closing state, the closing indication surface of the contact bracket is set corresponding to the indication window; in the opening state, the opening indication surface of the contact bracket is set corresponding to the indication window, so that it is convenient for users to judge the working state of the circuit breaker. After the contact bracket is injection molded, the opening indication surface and the closing indication surface of different colors are processed on the top of the contact bracket by ink silk screen printing. This processing procedure is relatively cumbersome and increases the production cost. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the contact bracket in the prior art, such as the complex processing steps and high production cost, thereby providing a small circuit breaker with low production cost.

[0005] To this end, the present invention provides a small circuit breaker, including a shell, a handle, a connecting rod, a contact bracket, a lock, a lock elastic member and a bracket elastic member, the shell is provided with an indication window; the handle is rotatably mounted on the shell; the connecting rod has a first rod portion connected to the handle and a second rod portion matched with the contact bracket; the contact bracket is rotatably mounted on the shell through a rotating shaft, the contact bracket is formed with a first indication portion that can be arranged corresponding to the indication window, and a step that abuts against the second rod portion; the lock is rotatably mounted on the shell through the rotating shaft, the lock is formed with a second indication portion that can be arranged corresponding to the indication window, and a pressing block portion and a release member that match the second rod portion A buckle portion, wherein the pressure block portion abuts against a side of the second rod portion away from the step, and is used to press the second rod portion against the step, and the release portion is used to drive the second rod portion to separate from the step, wherein the contact bracket and the lock buckle have different colors during injection molding; a lock buckle elastic member, one end of which abuts against the contact bracket, and the other end abuts against the lock buckle, and the lock buckle elastic member applies an elastic force to the lock buckle to press the pressure block portion and the second rod portion against each other; a bracket elastic member, one end of which abuts against the inner wall of the shell, and the other end abuts against the contact bracket, and the bracket elastic member applies an elastic force to the contact bracket to move it toward the opening position.

[0006] The contact bracket is provided with a moving contact, the moving contact rotates around the rotating shaft, and is formed with a through hole for the rotating shaft to pass through, and the rotating shaft is a metal shaft.

[0007] The contact support includes a contact mounting plate and a baffle plate vertically arranged on one side of the contact mounting plate. The inner wall of the baffle plate is provided with at least one baffle bar extending outward and arranged parallel to the contact mounting plate. The baffle bar and the contact mounting plate are opposite to form a first slot for the moving contact to be inserted.

[0008] It also includes: a first torsion spring, which is sleeved on the rotating shaft and has a first arm and a second arm extending outward and arranged at a certain angle. The first arm is against the contact bracket, and the end of the second arm forms an L-shaped hook, which is hooked and against the part of the moving contact away from the baffle.

[0009] A first undercut is provided on a side of the contact support away from the contact mounting plate, and a gap is formed between the first undercut and the contact mounting plate for the first support arm to be inserted.

[0010] The lock elastic member is a torsion spring, which is sleeved on the rotating shaft and has a third arm and a fourth arm extending outward and arranged at a certain angle. The lock is formed with a second undercut that abuts against the third arm, and the contact bracket is formed with a third undercut that abuts against the fourth arm.

[0011] The bracket elastic member is a compression spring.

[0012] A bimetallic strip is arranged in the shell, and the lock buckle is integrally formed with a connecting arm extending toward the bimetallic strip, and a tripping column vertically arranged at the end of the connecting arm, and the tripping column can be against one side of the bimetallic strip.

[0013] An arc-striking terminal piece is provided in the shell body and is located below the moving contact. The arc-striking terminal piece includes a main body plate, an arc-striking plate, the first branch plate, the second branch plate and a terminal plate. The arc-striking plate is located on one side of the main body plate, and has a first arc-striking section that is bent and extended obliquely downward, and a second arc-striking section that is horizontally arranged. One end of the first arc-striking section is connected to the main body plate, and the other end is connected to the second arc-striking section; the first branch plate and the second branch plate are both located on the other side of the main body plate, the first branch plate is inclined downward, and its end is fixed to the bimetallic strip, the second branch plate is L-shaped, the horizontal section of the L-shaped second branch plate is connected to the main body plate, and the vertical section is connected to the terminal plate, and the terminal plate extends into the wiring cavity of the terminal; wherein the arc-striking plate, the main body plate, the first branch plate, the second branch plate and the terminal plate are bent and connected as a whole.

[0014] The wiring board includes a wiring part horizontally arranged in the wiring terminal, and a fixing plate vertically bent and connected to the wiring part and extending out of the wiring terminal. Insertion blocks inserted into the second slot of the shell are arranged on both sides of the fixing plate.

[0015] The technical solution of the present invention has the following advantages: 1. In the miniature circuit breaker provided by the present invention, in the open state, the first indicating portion of the contact bracket is arranged corresponding to the indicating window; in the closed state, the second indicating portion of the lock is arranged corresponding to the indicating window. Since the colors of the contact bracket and the lock are different during injection molding, compared with the prior art method of processing indicating surfaces of different colors on the contact bracket by ink silk screen printing after injection molding, this production process is simpler and the production cost is reduced; in addition, during the closing process of the circuit breaker, the handle rotates clockwise, and the second rod portion of the connecting rod abuts against the step of the contact bracket, thereby driving the contact bracket to rotate clockwise around the rotating shaft. The contact bracket drives the moving contact to contact and connect with the static contact to achieve closing. During the closing process, the lock follows the contact bracket to rotate around the rotating shaft under the action of the lock elastic part, and the pressure block part of the lock presses the second rod part and the step against each other, and the bracket elastic part is in an energy storage state; when an overload or short circuit occurs, the lock rotates counterclockwise around the rotating shaft under the action of external force, and the release part of the lock drives the second rod part to separate from the step, and the bracket elastic part releases energy, driving the contact bracket to drive the moving contact to separate and disconnect from the static contact, thereby achieving opening. The above-mentioned contact bracket and lock have the advantages of simple structure and low production cost.

[0016] 2. In the small circuit breaker provided by the present invention, the moving contact rotates around the rotating shaft, and is formed with a through hole for the rotating shaft to pass through, and the rotating shaft is a metal shaft; it should be noted that in order to ensure that a certain contact pressure is maintained between the moving contact and the static contact, after the moving contact contacts the static contact, the contact bracket can also rotate a certain angle relative to the moving contact. In the prior art, a positioning column for the moving contact is provided on the contact bracket. Since the positioning column is made of plastic, it is easy to deform due to long-term contact with the high-temperature moving contact, which may cause the rotation of the moving contact to get stuck, thereby affecting the contact contact pressure. In the solution of the present application, since the moving contact rotates around the metal shaft, the metal shaft is not easy to deform, thereby ensuring the contact contact pressure, and the moving contact and the contact bracket both rotate around the same rotating shaft, and the structure is simpler.

[0017] 3. The small circuit breaker provided by the present invention comprises a contact support including a contact mounting plate and a baffle plate vertically arranged on one side of the contact mounting plate, the inner wall of the baffle plate is provided with at least one baffle bar extending outward and arranged parallel to the contact mounting plate, the baffle bar and the contact mounting plate are opposite to form a first slot, the first torsion spring is sleeved on the rotating shaft, and has a first arm and a second arm extending outward and arranged at a certain angle, the first arm abuts against the contact support, and the end of the second arm forms an L-shaped hook; during assembly, after the moving contact is inserted into the first slot, the L-shaped hook at the end of the second arm of the torsion spring abuts against the part of the moving contact away from the baffle, thereby realizing the assembly of the moving contact and the contact support, and the above assembly structure is simple.

[0018] 4. The miniature circuit breaker provided by the present invention has a bimetallic strip in the shell, a connecting arm extending toward the bimetallic strip is integrally formed with the lock, and a tripping column is vertically arranged at the end of the connecting arm, and the tripping column can be abutted against one side of the bimetallic strip. Compared with the prior art that requires an additional bimetallic pull rod to be arranged on the lock and the bimetallic strip, this structure is simpler, and the assembly process of the bimetallic pull rod is omitted, thereby reducing the production cost.

[0019] 5. The miniature circuit breaker provided by the present invention has an arc-striking terminal block including a main body plate, an arc-striking plate, a first branch plate, a second branch plate and a terminal block. Compared with the prior art in which the terminal block needs to be welded to the bimetallic strip through a soft copper connector, this method eliminates the welding process, makes the structure simpler and reduces the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of a miniature circuit breaker of the present invention; Figure 2 It is a structural schematic diagram of the operating mechanism of a miniature circuit breaker; Figure 3 It is a schematic diagram of the explosion structure of the operating mechanism of a miniature circuit breaker; Figure 4 It is a schematic diagram of the assembly of the moving contact and the contact bracket; Figure 5 It is a schematic diagram of the exploded structure of the moving contact and the contact support; Figure 6 is a three-dimensional diagram of the lock; Figure 7 It is a schematic diagram of the structure of the arc-starting connecting piece, the bimetallic strip and the connecting terminal; Figure 8 A three-dimensional diagram of an arc-starting terminal; Fig. 9 It is a schematic diagram of the assembly of the arc-starting terminal and the housing.

[0022] Description of the accompanying drawings: 1. housing; 2. indication window; 3. handle; 4. connecting rod; 5. first rod; 6. second rod; 7. contact bracket; 8. rotating shaft; 9. first indication part; 10. step; 11. lock; 12. second indication part; 13. pressing block part; 14. tripping part; 15. lock elastic member; 16. bracket elastic member; 17. moving contact; 18. perforation; 19. contact mounting plate; 20. baffle; 21. baffle bar; 22. first slot; 23. first torsion spring; 24. first arm; 25. The second arm; 26. L-shaped hook; 27. first undercut; 28. third arm; 29. ​​fourth arm; 30. second undercut; 31. third undercut; 32. bimetallic strip; 33. connecting arm; 34. tripping column; 35. arc-starting terminal; 36. main body plate; 37. arc-starting plate; 38. first arc-starting section; 39. second arc-starting section; 40. terminal block; 41. first branch plate; 42. second branch plate; 43. terminal block; 44. terminal block; 45. fixing plate; 46. second slot; 47. plug-in block. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] Example This embodiment provides a miniature circuit breaker, such as Figure 1 As shown, it includes a housing 1, a handle 3, a connecting rod 4, a contact bracket 7, a lock 11, a lock elastic member 15, a bracket elastic member 16 and an arc-starting terminal 35.

[0028] The housing 1 is provided with an indication window 2, and the housing 1 is provided with a handle 3 rotatably mounted thereon.

[0029] The connecting rod 4 is a U-shaped rod, such as Figure 2 and Figure 3 As shown, it has a first rod portion 5 connected to the handle 3 and a second rod portion 6 matched with a contact bracket 7, and the handle 3 is formed with a socket for the first rod portion 5 to be inserted.

[0030] The contact support 7 is rotatably mounted on the housing 1 via a rotating shaft 8. Figure 2 and Figure 3 As shown, the contact support 7 is formed with a first indicating portion 9 located at the top thereof and corresponding to the indicating window 2, and a step 10 located at the front thereof and abutting against the second rod portion 6. Figure 4 and Figure 5 As shown, the contact support 7 includes a contact mounting plate 19 and a baffle plate 20 vertically arranged on one side of the contact mounting plate 19. The inner wall of the baffle plate 20 is provided with at least one baffle bar 21 extending outward and arranged in parallel with the contact mounting plate 19. The baffle bar 21 and the contact mounting plate 19 are opposite to form a first slot 22 for inserting the moving contact 17. The first slot 22 has a side opening. The moving contact 17 rotates around the rotating shaft 8, and is formed with a through hole 18 for the rotating shaft 8 to pass through. The rotating shaft 8 is a metal shaft and also includes a first torsion spring 23 sleeved on the rotating shaft 8. The first torsion spring 23 has a first arm 24 and a second arm 25 extending outward and arranged at a certain angle. The first arm 24 abuts against the contact support 7, and the end of the second arm 25 forms an L-shaped hook 26. The L-shaped hook 26 is hooked and abutted with the part of the moving contact 17 away from the baffle plate 20. The contact support 7 is provided with a first undercut 27 on a side away from the contact mounting plate 19, and a gap is formed between the first undercut 27 and the contact mounting plate 19 for the first arm 24 to be inserted. Figure 6 As shown, the lock buckle 11 is integrally formed with a connecting arm 33 extending toward the bimetallic strip 32, and a tripping column 34 vertically disposed at the end of the connecting arm 33. The tripping column 34 can abut against one side of the bimetallic strip 32. When the bimetallic strip 32 is deformed by heat, the lock buckle 11 can be driven to rotate in the counterclockwise direction by driving the tripping column 34. Figure 1 As shown, a bracket elastic member 16 is provided between the contact bracket 7 and the housing 1 , and the bracket elastic member 16 applies an elastic force to the contact bracket 7 to move toward the opening position. In this embodiment, the bracket elastic member 16 is a compression spring.

[0031] The lock buckle 11 is rotatably mounted on the housing 1 via the rotating shaft 8. The lock buckle 11 is formed with a second indicating portion 12 that can be arranged corresponding to the indicating window 2, and a pressing block portion 13 and a releasing portion 14 that cooperate with the second rod portion 6. The pressing block portion 13 abuts against the side of the second rod portion 6 away from the step 10, and is used to press the second rod portion 6 against the step 10. The releasing portion 14 is used to drive the second rod portion 6 to separate from the step 10. The contact bracket 7 and the lock buckle 11 have different colors during injection molding. Different colors of pigments can be added to the contact bracket 7 and the lock buckle 11 during injection molding.

[0032] The lock elastic member 15 has one end against the contact support 7 and the other end against the lock 11. The lock elastic member 15 applies an elastic force to the lock 11 to press the pressing block portion 13 against the second rod portion 6. In this embodiment, the lock elastic member 15 is a torsion spring. Figure 2 and Figure 3 As shown, the torsion spring is sleeved on the rotating shaft 8, and has a third arm 28 and a fourth arm 29 extending outward and arranged at a certain angle, the lock buckle 11 is formed with a second undercut 30 that abuts against the third arm 28, and the contact bracket 7 is formed with a third undercut 31 that abuts against the fourth arm 29.

[0033] The arc-starting connection piece 35 is located below the moving contact 17. Figure 7 and Figure 8 As shown, it includes: a main body plate 36; an arc-starting plate 37, located on one side of the main body plate 36, having a first arc-starting section 38 that is bent and extended obliquely downward, and a second arc-starting section 39 that is horizontally arranged, one end of the first arc-starting section 38 is connected to the main body plate 36, and the other end is connected to the second arc-starting section 39; a first branch plate 41 and a second branch plate 42, both located on the other side of the main body plate 36, the first branch plate 41 is inclined downward, and its end is fixed to the bimetallic strip 32, the second branch plate 42 is L-shaped, the horizontal section of the L-shaped second branch plate 42 is connected to the main body plate 36, and the vertical section is connected to the wiring board 40, the wiring board 40 extends into the wiring cavity of the wiring terminal 43; the wiring board 40, the wiring board 40 includes a wiring portion 44 horizontally arranged in the wiring terminal 43, and a fixing plate 45 that is vertically bent and connected to the wiring portion 44 and extends out of the wiring terminal 43, as shown Fig. 9As shown, the two sides of the fixing plate 45 are provided with inserting blocks 47 inserted into the second slots 46 of the housing 1. The arc-starting plate 37, the main plate 36, the first branch plate 41, the second branch plate 42 and the terminal plate 40 are integrally bent and connected.

[0034] In the miniature circuit breaker provided by the present invention, in the open state, the first indicating portion 9 of the contact bracket 7 is arranged corresponding to the indicating window 2; in the closed state, the second indicating portion 12 of the lock catch 11 is arranged corresponding to the indicating window 2. Since the contact bracket 7 and the lock catch 11 have different colors during injection molding, compared with the prior art method of processing indicating surfaces of different colors on the contact bracket by ink silk screen printing after injection molding, this production process is simpler and the production cost is reduced.

[0035] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A miniature circuit breaker, characterized in that: include: The housing (1) is provided with an indication window (2); A handle (3) is rotatably mounted on the housing (1); A connecting rod (4) having a first rod portion (5) connected to the handle (3), and a second rod portion (6) matched with a contact bracket (7); A contact support (7) is rotatably mounted on the housing (1) via a rotating shaft (8), the contact support (7) being formed with a first indicating portion (9) that can be arranged corresponding to the indicating window (2), and a step (10) that abuts against the second rod portion (6); A lock buckle (11) is rotatably mounted on the housing (1) via the rotating shaft (8), the lock buckle (11) being formed with a second indicating portion (12) which can be arranged corresponding to the indicating window (2), and a pressing block portion (13) and a release portion (14) which cooperate with the second rod portion (6), the pressing block portion (13) being abutted against a side of the second rod portion (6) away from the step (10) for pressing the second rod portion (6) against the step (10), and the release portion (14) being used for driving the second rod portion (6) to separate from the step (10), wherein the contact bracket (7) and the lock buckle (11) have different colors during injection molding; A locking elastic member (15), one end of which abuts against the contact bracket (7) and the other end of which abuts against the locking member (11), wherein the locking elastic member (15) applies an elastic force to the locking member (11) so that the pressing block portion (13) and the second rod portion (6) are pressed against each other; A bracket elastic member (16) has one end abutting against the inner wall of the housing (1) and the other end abutting against the contact bracket (7), and the bracket elastic member (16) applies an elastic force to the contact bracket (7) to move the contact bracket (7) toward the opening position.

2. The miniature circuit breaker according to claim 1, characterized in that: A moving contact (17) is mounted on the contact support (7), the moving contact (17) rotates around the rotating shaft (8), and is formed with a through hole (18) for the rotating shaft (8) to pass through, and the rotating shaft (8) is a metal shaft.

3. The miniature circuit breaker according to claim 2, characterized in that: The contact support (7) comprises a contact mounting plate (19), and a baffle (20) vertically arranged on one side of the contact mounting plate (19); the inner wall of the baffle (20) is provided with at least one baffle bar (21) extending outward and arranged parallel to the contact mounting plate (19); the baffle bar (21) and the contact mounting plate (19) are opposed to each other to form a first slot (22) for inserting the moving contact (17).

4. The miniature circuit breaker according to claim 3, characterized in that: Also includes: The first torsion spring (23) is sleeved on the rotating shaft (8), and comprises a first arm (24) and a second arm (25) extending outward and arranged at a certain angle, wherein the first arm (24) abuts against the contact support (7), and the end of the second arm (25) forms an L-shaped hook (26), and the L-shaped hook (26) hooks and abuts against a portion of the moving contact (17) away from the baffle (20).

5. The miniature circuit breaker according to claim 4, characterized in that: A first undercut (27) is provided on a side of the contact support (7) away from the contact mounting plate (19), and a gap is formed between the first undercut (27) and the contact mounting plate (19) for the first support arm (24) to be inserted.

6. The miniature circuit breaker according to claim 1, characterized in that: The lock buckle elastic member (15) is a torsion spring, which is sleeved on the rotating shaft (8) and has a third arm (28) and a fourth arm (29) extending outward and arranged at a certain angle, the lock buckle (11) is formed with a second undercut (30) that abuts against the third arm (28), and the contact bracket (7) is formed with a third undercut (31) that abuts against the fourth arm (29).

7. The miniature circuit breaker according to claim 1, characterized in that: The bracket elastic member (16) is a compression spring.

8. The miniature circuit breaker according to claim 1, characterized in that: A bimetallic strip (32) is provided in the housing (1), and the lock buckle (11) is integrally formed with a connecting arm (33) extending in the direction of the bimetallic strip (32), and a tripping column (34) vertically provided at the end of the connecting arm (33), wherein the tripping column (34) can abut against one side of the bimetallic strip (32).

9. The miniature circuit breaker according to claim 8, characterized in that: An arc-striking connecting piece (35) is provided in the housing (1) and is located below the moving contact (17). The arc-striking connecting piece (35) comprises: Main body plate (36); an arc-starting plate (37) located on one side of the main plate (36), comprising a first arc-starting section (38) extending obliquely downwardly and bent, and a second arc-starting section (39) arranged horizontally, one end of the first arc-starting section (38) being connected to the main plate (36), and the other end being connected to the second arc-starting section (39); The first branch plate (41) and the second branch plate (42) are both located on the other side of the main plate (36); the first branch plate (41) is arranged to be tilted downward, and its end is fixed to the bimetallic strip (32); the second branch plate (42) is L-shaped; the horizontal section of the L-shaped second branch plate (42) is connected to the main plate (36), and the vertical section is connected to the wiring board (40); the wiring board (40) extends into the wiring cavity of the wiring terminal (43); The arc-starting plate (37), the main body plate (36), the first branch plate (41), the second branch plate (42) and the terminal plate (40) are integrally bent and connected.

10. The miniature circuit breaker according to claim 9, characterized in that: The wiring board (40) comprises a wiring portion (44) horizontally arranged inside the wiring terminal (43), and a fixing plate (45) vertically bent and connected to the wiring portion (44) and extending outside the wiring terminal (43), and inserting blocks (47) are provided on both sides of the fixing plate (45) for inserting into the second slot (46) of the housing (1).

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