A wire clamp spring and contact terminal block

Abstract

This utility model relates to the field of terminal block technology, specifically to a wire clamping spring and a contact terminal block. A wire clamping spring includes: a body adapted to be disposed within a housing; the body includes a wire clamping end and a locking section; the wire clamping end has a wire clamping opening; the body has a self-locking state and a wire clamping state. In the self-locking state, the locking section is locked to the wire clamping end, forming a receiving space between the body and the housing, suitable for a conductive wire to extend into; in the wire clamping state, the conductive wire extends into the receiving space, the wire clamping end is released from the locking section, and at least a portion of the conductive wire extends into the wire clamping opening to clamp the conductive wire. This utility model provides a wire clamping spring and a contact terminal block to solve the problem that, during long-term use after the conductive wire is clamped, the conductive wire is prone to displacement in a direction perpendicular to its own length, resulting in insufficient clamping stability.

Description

Technical Field

[0001] This utility model relates to the field of terminal block technology, specifically to a wire clamping spring and a contact terminal block. Background Technology

[0002] "Touch-connect" terminal blocks enable easy and efficient connection of conductive wires in conductive equipment. In existing technology, plate-shaped springs and the inner wall of the housing cooperate to clamp the conductive wires. During long-term use, the conductive wires are prone to displacement in a direction perpendicular to their own length, resulting in insufficient clamping stability. Utility Model Content

[0003] In view of this, the present invention provides a wire clamping spring and a contact terminal block to solve the problem that the conductive wire is prone to displacement in a direction perpendicular to its own length during long-term use after being clamped, resulting in insufficient clamping stability.

[0004] In a first aspect, this utility model provides a wire-clamping spring, comprising:

[0005] The body is adapted to be disposed within a housing. The body includes a wire clamping end and a locking section. The wire clamping end has a wire clamping opening. The body has a self-locking state and a wire clamping state. In the self-locking state, the locking section is locked to the wire clamping end, and a receiving space is formed between the body and the housing. The receiving space is adapted for a conductive wire to extend into. In the wire clamping state, the conductive wire extends into the receiving space, the wire clamping end is released from locking with the locking section, and at least a portion of the conductive wire extends into the wire clamping opening to clamp the conductive wire.

[0006] A portion of the conductive wire extends into the clamping opening. When the diameter of the conductive wire is larger than the clamping opening, a portion of the conductive wire will enter the clamping opening, achieving multi-point contact through the side and bottom walls of the clamping opening. When the diameter of the conductive wire is smaller than the clamping opening, the entire conductive wire will be located within the clamping opening. The cooperation of at least one side and bottom wall of the clamping opening restricts the arbitrary movement of the conductive wire within the receiving space, enabling multi-point contact or even line contact between the conductive wire and the clamping opening. Furthermore, the clamping opening can restrict the arbitrary movement of the conductive wire, ensuring the stability of the conductive wire after clamping.

[0007] In one alternative embodiment, the clamping end extends into two latches in a direction away from the locking section, and the clamping opening is formed between the two latches.

[0008] In one alternative embodiment, the inner wall of the latch is inclined from the top of the clamping opening toward the central axis of the clamping opening, such that the cross-sectional shape of the clamping opening is U-shaped, V-shaped, trapezoidal, or arc-shaped.

[0009] In one optional embodiment, the body further includes a trigger end, which is located at the end of the locking section opposite to the clamping end. The trigger end is suspended and connected to the locking section. The width of the locking section is smaller than the width of the trigger end. A locking groove is formed between the side of the locking section and the end of the trigger end. In the self-locking state, the locking tongue of the clamping opening is engaged in the locking groove.

[0010] In one optional embodiment, the body further includes a bearing section and an intermediate fixing section. One end of the bearing section is connected to the clamping end, and the other end of the bearing section is connected to the intermediate fixing section. The end of the intermediate fixing section opposite to the bearing section is connected to a locking section. The first connection between the bearing section and the intermediate fixing section is arc-shaped, and the second connection between the bearing section and the clamping end is arc-shaped. The arc at the first connection is concave downwards, and the arc at the second connection is convex upwards.

[0011] Secondly, this utility model also provides a contact terminal block, including a housing, wherein the aforementioned wire clamping spring is disposed inside the housing.

[0012] In one alternative embodiment, a fluid carrier is further included, which is disposed within the housing. A slot is provided on the first inner sidewall of the fluid carrier, and in the wire clamping state, the locking tongue of the wire clamping opening is adapted to engage with the slot.

[0013] In one optional embodiment, a receiving space is formed between the first inner sidewall and the clamping end of the body. The housing is provided with a wire-passing hole and a force-applying hole. The central axis of the wire-passing hole and the central axis of the force-applying hole are arranged parallel to each other. The wire-passing hole is adapted to allow a conductive wire to pass through. When the end of the conductive wire switches from the self-locking state to the clamping state, it abuts against the trigger end. The force-applying hole is adapted to allow a force-applying element to enter, so that the body switches from the clamping state to the self-locking state.

[0014] In one alternative embodiment, a guide portion is provided on the side of the first inner wall facing the body, the guide portion being used to guide the conductive wire into the receiving space and / or increase the resistance of the conductive wire leaving the receiving space.

[0015] In one optional embodiment, the housing is provided with a first support and a second support, the intermediate fixed section and the locking section are provided with a third connection, the locking section and the trigger end are provided with a fourth connection, the first support supports the third connection, the second support supports the fourth connection, the third connection and the fourth connection are respectively arc-shaped, and the first support and the second support are provided on both sides of the locking section. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the clamping spring in a free state according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the clamping spring in a self-locking state according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the fluid-carrying agent according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the engagement between the clamping spring and the fluid carrier in a free state according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram showing the exposed spring clips and fluid carrier after the shell of this utility model is partially cut open.

[0022] Explanation of reference numerals in the attached drawings: 1. Body; 101. Wire clamping end; 102. Locking section; 103. Wire clamping opening; 1031. Guide surface; 1032. Locking tongue; 10321. Inner wall; 10322. Bottom wall; 104. Trigger end; 105. Intermediate fixing section; 106. Bearing section; 107. First connection; 108. Second connection; 109. Third connection; 110. Fourth connection; 111. Locking groove; 2. Flow carrier; 201. First inner sidewall; 202. Slot; 203. Horizontal section; 204. Vertical section; 205. Second inner sidewall; 206. Guide part; 3. Housing; 301. Wire hole; 302. Force application hole; 303. Detection hole; 304. First support part; 305. Second support part; 306. Third support part. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Example 1

[0025] The following is combined Figures 1 to 5 The following describes embodiments of the present invention.

[0026] According to an embodiment of the present invention, a wire clamping spring is provided, comprising: a body 1, adapted to be disposed within a housing 3, the body 1 including a wire clamping end 101 and a locking section 102, the wire clamping end 101 having a wire clamping opening 103, the body 1 having a self-locking state and a wire clamping state, in the self-locking state, the locking section 102 is locked to the wire clamping end 101, and an accommodating space is formed between the body 1 and the housing 3, the accommodating space being suitable for a conductive wire to extend into; in the wire clamping state, the conductive wire extends into the accommodating space, the wire clamping end 101 is released from the locking section 102, and at least a portion of the conductive wire extends into the wire clamping opening 103 to clamp the conductive wire.

[0027] In practical use, the cross-section of the conductive wire is often circular. A portion of the conductive wire extends into the clamping opening 103. When the diameter of the conductive wire is larger than the clamping opening 103, a portion of the conductive wire will enter the clamping opening 103. Multi-point contact is achieved through the sidewall and bottom wall 10322 of the clamping opening 103. Through multi-point contact, the conductive wire is restricted from moving along a direction perpendicular to its own length. Figure 1 The movement of the conductor in the Y direction (also known as "lateral") is restricted. When the diameter of the conductor is smaller than the clamping opening 103, the conductor as a whole will be located within the clamping opening 103. The movement of the conductor in the direction perpendicular to its own length is restricted by the cooperation of at least one side wall and bottom wall 10322 of the clamping opening 103. Figure 1 The movement in the Y direction (also known as the "lateral direction") allows for multi-point or even line contact between the conductive wire and the clamping opening 103. Furthermore, the clamping opening 103 restricts the arbitrary movement of the conductive wire, ensuring its stability after clamping. It should be noted that the body 1 in this embodiment is made of an elastic conductive material, such as copper.

[0028] In one embodiment, such as Figure 1 , Figure 2 As shown, the wire clamping end 101 extends with two locking tongues 1032 in the direction away from the locking section 102, and a wire clamping opening 103 is formed between the two locking tongues 1032. The wire clamping opening 103 is formed by the arrangement of the two locking tongues 1032 to accommodate the conductive wire.

[0029] In one embodiment, such as Figure 1 , Figure 2As shown, the inner wall 10321 of the locking tongue 1032 slopes from the top of the wire clamping opening 103 towards the central axis of the bottom wall 10322, making the cross-sectional shape of the wire clamping opening 103 trapezoidal. In this embodiment, the trapezoid is an isosceles trapezoid, and the bottom wall 10322 of the wire clamping opening 103 is the upper base of the trapezoid. The trapezoidal opening accommodates the conductive wire. By setting the trapezoid, it is ensured that at least one side of the trapezoid is in contact with the conductive wire. The locking tongue 1032 restricts the conductive wire from moving outside the wire clamping opening 103, preventing arbitrary shaking of the conductive wire and ensuring the stability of the connection.

[0030] In this embodiment, as Figure 1 , Figure 2 As shown, the depth of the clamping opening 103 is greater than the diameter of the conductive wire, and the width of the clamping opening 103 is greater than the diameter of the conductive wire. The clamping opening 103, in the clamping state, accommodates the conductive wire. By making the depth and width of the clamping opening 103 greater than the diameter of the conductive wire, the clamping opening 103 accommodates the conductive wire.

[0031] In one embodiment, such as Figure 1 , Figure 2 As shown, the main body 1 also includes a trigger end 104, which is located at the end of the locking section 102 opposite to the wire clamping end 101. The trigger end 104 is suspended and connected to the locking section 102. The width of the locking section 102 is smaller than the width of the trigger end 104. A locking groove 111 is formed between the side of the locking section 102 and the end of the trigger end 104. In the self-locking state, the locking tongue 1032 of the wire clamping opening 103 is engaged in the locking groove 111. Because the width of the locking section 102 in the Y-axis direction is smaller than the width of the trigger end 104 in the Y-axis direction, the locking groove 111 is formed between the side of the locking section 102 and the end of the trigger end 104. The locking groove 111 locks the locking tongue 1032 of the wire clamping opening 103 in the self-locking state. In this embodiment, there are two locking grooves 111, that is, each side of the locking section 102 forms a locking groove 111 with the end of the trigger end 104, and the locking grooves 111 and the locking tongue 1032 are configured in a one-to-one correspondence.

[0032] In this embodiment, as Figure 1 As shown, the X direction is the length direction, the Y direction is the width direction, and the Z direction is the height direction.

[0033] In one embodiment, such as Figure 1 , Figure 2As shown, the main body 1 also includes a support section 106 and an intermediate fixing section 105. One end of the support section 106 is connected to the clamping end 101, and the other end of the support section 106 is connected to the intermediate fixing section 105. The end of the intermediate fixing section 105 facing away from the support section 106 is connected to the locking section 102. The first connection 107 between the support section 106 and the intermediate fixing section 105 is arc-shaped, and the second connection 108 between the support section 106 and the clamping end 101 is arc-shaped. The arc of the first connection 107 is concave downwards, and the arc of the second connection 108 is convex upwards. By setting the first connection 107 and the second connection 108 to be arc-shaped, and the directions of their arc protrusions being opposite, the support section 106 will not slip rapidly when subjected to the force of the force-applying component because the support section 106 is a flat surface.

[0034] According to an embodiment of the present invention, another aspect is provided: a contact terminal block, including a housing 3, wherein the aforementioned wire clamping spring is disposed within the housing 3.

[0035] In one embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, it also includes a fluid carrier 2. The fluid carrier 2 and the body 1 are disposed within the housing 3. A slot 202 is provided on the first inner sidewall 201 of the fluid carrier 2. In the clamped state, the locking tongue 1032 of the clamping opening 103 engages with the slot 202. In the clamped state, the slot 202 limits the position of the locking tongue 1032, thereby locking the locking tongue 1032. Since the depth and width of the clamping opening 103 are greater than the diameter of the conductive wire, the clamping opening 103 accommodates the conductive wire. The locking tongue 1032 of the clamping opening 103 then enters the slot 202, achieving the cooperation between the first inner sidewall 201 and the clamping opening 103. This can clamp fine conductive wires with small diameters, making the fixing of the conductive wire more stable. It should be noted that if the diameter of the conductive wire is greater than the depth of the slot 202, the locking tongue 1032 of the clamping opening 103 cannot engage with the slot 202.

[0036] In one embodiment, such as Figure 3 , Figure 4 and Figure 5As shown, a receiving space is formed between the first inner sidewall 201 of the fluid carrier 2 and the clamping end 101 of the body 1. The housing 3 is provided with a wire hole 301 and a force application hole 302. The central axis of the wire hole 301 and the central axis of the force application hole 302 are arranged parallel to each other. The wire hole 301 is suitable for passing a conductive wire. When the end of the conductive wire switches from the self-locking state to the clamping state, it abuts against the trigger end 104. The force application hole 302 is suitable for entering the force application member so that the body 1 switches from the clamping state to the self-locking state. The force-applying component slides within the force-applying hole 302 relative to the housing 3 to apply pressure to the bearing section 106, causing the locking section 102 to lock the clamping end 101. When the conductive wire enters the through hole 301, the end of the conductive wire will contact the trigger end 104, applying downward pressure along the Z-axis to the trigger end 104. This causes the locking section 102 to be driven by the trigger end 104 and separate from the clamping end 101. Under the action of elastic restoring force, the clamping end 101 clamps the conductive wire through the clamping opening 103, thus fixing the conductive wire. It should be noted that in this embodiment, the housing 3 is made of an insulating material, such as insulating plastic; the current carrier 2 is made of a conductive material, such as copper, silver, or other conductive materials.

[0037] In this embodiment, as Figure 3 and Figure 4 As shown, the fluid carrier 2 also includes a second inner sidewall 205 and a horizontal section 203, wherein the horizontal section 203 and the first inner sidewall 201 are arranged in an L-shape, the second inner sidewall 205 and the first inner sidewall 201 are arranged in an L-shape, and a gap is left between the second inner sidewall 205 and the horizontal section 203.

[0038] In one embodiment, such as Figure 3 , Figure 4 As shown, a guide portion 206 is provided on the side of the first inner wall 201 facing the body 1. The guide portion 206 is used to guide the conductive wire into the receiving space and / or increase the resistance of the conductive wire leaving the receiving space. In this embodiment, the cross-section of the guide portion 206 along the Z direction is triangular. The guide portion 206 guides the conductive wire into the receiving space until it reaches the surface of the trigger end 104. After the conductive wire is clamped by the clamping opening 103, due to the presence of the guide portion 206, the conductive wire will bend at the guide portion 206. The guide portion 206 increases the resistance of the conductive wire leaving the receiving space, so that the conductive wire will not easily separate from the clamping opening 103, ensuring the stability of the clamped conductive wire.

[0039] In one embodiment, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the housing 3 has a first support portion 304 and a second support portion 305. A third connection 109 is provided between the intermediate fixed section 105 and the locking section 102. A fourth connection 110 is provided between the locking section 102 and the trigger end 104. The first support portion 304 supports the third connection 109, and the second support portion 305 supports the fourth connection 110. The third connection 109 and the fourth connection 110 are both arc-shaped. The first support portion 304 and the second support portion 305 are located on both sides of the locking section 102. By providing the fourth connection 110 between the locking section 102 and the trigger end 104, the heights of the locking section 102 and the trigger end 104 along the Z-axis are different; that is, the height of the locking section 102 is higher than the height of the trigger end 104. To fix the third connection 109, the first support 304 and the vertical section 204 of the fluid carrier 2 work together to clamp the third connection 109; the second support 305 is located below the fourth connection 110, so that when the trigger end 104 moves downward, it drives the fourth connection 110 to move toward the trigger end 104, thereby separating the locking section 102 and the clamping end 101.

[0040] In this embodiment, as Figure 5 As shown, the housing 3 also includes a third support 306 and a detection hole 303. The third support 306 is fitted into the intermediate connecting section in a self-locking state. The detection hole 303 is suitable for inserting a probe, which determines whether the body 1 is energized. Figure 1 As shown, the latch 1032 of the wire clamping opening 103 is provided with a guide surface 1031. The guide surface 1031 is provided to prevent the latch 1032 of the wire clamping opening 103 from being unable to enter the lock groove 111.

[0041] A method for using a contact terminal block, having a free state, a self-locking state, and a wire-clamping state, includes the following steps:

[0042] (1) In the free state, the locking tongue 1032 of the clamping end 101 extends into the slot 202 of the fluid carrier 2, and there is a gap between the middle fixed section 105 and the first support part 304, and the gap is larger closer to the first connection 107.

[0043] (2) When switching from the free state to the self-locking state, the personnel put the force-applying component into the force-applying hole 302. The force-applying component applies downward pressure to the bearing section 106. The bearing section 106 drives the clamping end 101 to move toward the locking section 102. Under the action of the guide surface 1031, the locking tongue 1032 of the clamping end 101 enters into the locking groove 111.

[0044] (3) In the self-locking state, the force block is removed, the locking section 102 locks the clamping end 101, and a receiving space is formed between the body 1 and the first inner sidewall 201. The receiving space is suitable for inserting a conductive wire. The middle fixing section 105 is subjected to compression force, and a part of the middle fixing section 105 is fitted to the third support 306.

[0045] (4) When switching from the self-locking state to the clamping state, the conductive wire extends into the receiving space through the wire hole 301, and the end of the conductive wire applies force toward the trigger end 104 to separate the locking section 102 and the clamping end 101. At the same time, the clamping end 101 engages with the slot 202 of the first inner sidewall 201 under the action of the restoring force.

[0046] (5) In the clamped state, the conductive wire is fixed in the space formed by the clamped opening 103 and the first inner sidewall 201, and the current carrier 2 contacts the end of the conductive wire to transmit current.

[0047] (6) When switching from the clamped state to the free state, the force-applying member applies force to the bearing section 106 again through the force-applying hole 302, causing the bearing section 106 to move toward the trigger end 104 until the conductive wire is pulled out, the force-applying member is released, and the free state is restored.

[0048] It should be noted that the contact terminal provided in this embodiment can also be switched directly from the clamped state to the self-locking state to replace conductive wires of different diameters.

[0049] The wire clamping spring and contact terminal provided by this utility model have the following advantages: (1) A wire clamping opening 103 is formed between the two locking tongues 1032, and the wire clamping opening 103 is used to accommodate the conductive wire. The wire clamping opening 103 and the current carrier 2 cooperate to achieve the clamping of the conductive wire in the clamping state; (2) The height of the locking groove 111 of the trigger end 104 is higher than that of the locking section 102. Through the staggered arrangement of the two, the trigger end 104 needs to be shorter to adapt to the narrow space. The small-diameter conductive wire only needs a small force to make the trigger end 104 move downward, driving the locking section 102 and the wire clamping end 101. (3) It realizes the contact between the conductive wire and the current carrier 2, requiring fewer parts and lower overall cost; (4) The overall structure of the clamping spring is simpler and easier to process and form, and the mold design is easier, which is conducive to mass production; (5) The direction of the conductive wire insertion is the same as the direction of the spring force when opening the clamping spring, making it more convenient to operate when wiring in a narrow cabinet; (6) The clamping opening 103 and the first inner side wall 201 form an enclosed space. Compared with the point contact between the traditional clamping plate and the conductive wire, the conductive wire and the clamping opening 103 are in multi-point contact or even line contact mode, making the connection more stable.

[0050] As an alternative implementation, the depth of the clamping opening 103 is less than the diameter of the conductive wire, and the width of the clamping opening 103 is greater than the diameter of the conductive wire, so that a portion of the conductive wire enters into the clamping opening 103 to satisfy the fixation of a conductive wire with a larger diameter.

[0051] As an alternative implementation, the material of the body 1 can also be other elastic conductive materials such as silver, aluminum, nickel, and iron.

[0052] As an alternative implementation, the number of lock slots 111 may be 1, 3, 4 or even more.

[0053] As an alternative implementation, the wire clamping opening 103 may also be other shapes that can accommodate conductive wires, such as V-shaped, U-shaped, or arc-shaped.

[0054] As an alternative implementation, the width of the wire clamping opening 103 may also be equal to the diameter of the conductive wire.

[0055] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A wire-clamping spring, characterized in that: The device includes a body (1) adapted to be disposed within a housing (3). The body (1) includes a clamping end (101) and a locking section (102). The clamping end (101) is provided with a clamping opening (103). The body (1) has a self-locking state and a clamping state. In the self-locking state, the locking section (102) is locked to the clamping end (101), and a receiving space is formed between the body (1) and the housing (3). The receiving space is adapted for a conductive wire to extend into. In the clamping state, the conductive wire extends into the receiving space, the clamping end (101) is released from the locking section (102), and at least a portion of the conductive wire extends into the clamping opening (103) to clamp the conductive wire.

2. The clamping spring of claim 1, wherein The clamping end (101) extends in a direction away from the locking section (102) and has two locking tongues (1032), with the clamping opening (103) formed between the two locking tongues (1032).

3. The clamping spring of claim 2, wherein The inner wall (10321) of the latch (1032) is inclined from the top of the clamping opening (103) toward the central axis of the clamping opening (103) towards the bottom wall (10322), so that the cross-sectional shape of the clamping opening (103) is U-shaped, V-shaped, trapezoidal or arc-shaped.

4. The clamping spring of claim 2, wherein The main body (1) also includes a trigger end (104), which is located at the end of the locking section (102) away from the clamping end (101). The trigger end (104) is suspended. The trigger end (104) is connected to the locking section (102). The width of the locking section (102) is smaller than the width of the trigger end (104). The side of the locking section (102) and the end of the trigger end (104) form a locking groove (111). In the self-locking state, the locking tongue (1032) of the clamping opening (103) is engaged in the locking groove (111).

5. The clamping spring of claim 4, wherein The main body (1) further includes a bearing section (106) and an intermediate fixing section (105). One end of the bearing section (106) is connected to the clamping end (101), and the other end of the bearing section (106) is connected to the intermediate fixing section (105). The end of the intermediate fixing section (105) facing away from the bearing section (106) is connected to the locking section (102). The first connection point (107) between the bearing section (106) and the intermediate fixing section (105) is arc-shaped, and the second connection point (108) between the bearing section (106) and the clamping end (101) is arc-shaped. The arc of the first connection point (107) is concave downwards, and the arc of the second connection point (108) is convex upwards.

6. A touch terminal block comprising a housing (3), characterized in that The housing (3) is provided with a clamping spring as described in any one of claims 1-5.

7. The contact terminal block of claim 6, wherein, It also includes a fluid carrier (2), which is disposed inside the housing (3). The first inner sidewall (201) of the fluid carrier (2) is provided with a slot (202). In the wire clamping state, the locking tongue (1032) of the wire clamping opening (103) is adapted to be inserted into the slot (202).

8. The touch terminal block of claim 7, wherein, A receiving space is formed between the first inner sidewall (201) and the clamping end (101) of the body (1). The housing (3) is provided with a wire hole (301) and a force-applying hole (302). The central axis of the wire hole (301) and the central axis of the force-applying hole (302) are arranged parallel to each other. The wire hole (301) is suitable for passing a conductive wire through. When the end of the conductive wire switches from the self-locking state to the clamping state, it abuts against the trigger end (104). The force-applying hole (302) is suitable for entering the force-applying member so that the body (1) switches from the clamping state to the self-locking state.

9. The contact terminal block of claim 8, wherein, The first inner sidewall (201) has a guide portion (206) on the side facing the body (1). The guide portion (206) is used to guide the conductive wire into the receiving space and / or increase the resistance of the conductive wire leaving the receiving space.

10. The contact terminal block of claim 9, wherein, The housing (3) is provided with a first support part (304) and a second support part (305). The intermediate fixed section (105) and the locking section (102) are provided with a third connection point (109). The locking section (102) and the trigger end (104) are provided with a fourth connection point (110). The first support part (304) supports the third connection point (109), and the second support part (305) supports the fourth connection point (110). The third connection point (109) and the fourth connection point (110) are respectively arc-shaped. The first support part (304) and the second support part (305) are located on both sides of the locking section (102).

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