Connector locking piece and connector

Abstract

The invention discloses a connector locking piece and a connector. The connector lock includes: a fixing portion for fixing to a housing of the connector and having front and rear sides opposite in a longitudinal direction; the transverse beam extends in the transverse direction perpendicular to the longitudinal direction and is provided with two opposite ends in the transverse direction; the U-shaped elastic arm is connected between the cross beam and the rear side of the fixed part; and the pair of elastic lock catches are respectively positioned at two ends of the cross beam. The elastic lock catch comprises a cantilever extending by a preset length in the longitudinal direction; the clamping hook is formed at the tail end of the cantilever and is used for being jointed with a matching shell of a matching connector; and a holding part formed at the root of the cantilever. When the clamping hook is connected with the matched shell, the maintaining part abuts against the step part of the shell in the longitudinal direction so as to increase the longitudinal connection force between the clamping hook and the matched shell. Therefore, the strength of the U-shaped elastic arm does not need to be enhanced, so that the unlocking force of the connector locking piece cannot be increased.

Description

Technical Field

[0001] The present invention relates to a connector locking piece and a connector comprising the connector locking piece. Background Art

[0002] In the prior art, in order to lock the housing of a connector to the mating housing of a mating connector, a locking member is usually installed on the housing of the connector, and the locking member usually includes a fixing portion, a crossbeam, a U-shaped elastic arm and a pair of elastic lock catches. The fixing portion is fixed to the housing, and the U-shaped elastic arm is connected between the fixing portion and the crossbeam. A pair of elastic lock catches are respectively connected to the two ends of the crossbeam. The elastic lock catch is used to engage with the mating housing. The U-shaped elastic arm is used to provide a longitudinal engagement force to the elastic lock catch and to automatically reset the elastic lock catch from an unlocked position to a locked position. When the elastic lock catch needs to be unlocked, the U-shaped elastic arm can be driven to elastically deform by pulling the unlocking belt connected to the crossbeam.

[0003] In the prior art, to increase the longitudinal engagement force between the elastic lock catch and the mating housing, the strength of the U-shaped elastic arm needs to be increased. However, increasing the strength of the U-shaped elastic arm results in greater rigidity of the U-shaped elastic arm, which requires a greater unlocking force, making unlocking the unlocking member very difficult. Summary of the Invention

[0004] The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and defects in the prior art.

[0005] According to one aspect of the present invention, a connector locking member is provided. The connector locking member includes: a fixing portion for fixing to the housing of the connector and having a front side and a rear side opposite to each other in the longitudinal direction; a crossbeam extending in a transverse direction perpendicular to the longitudinal direction and having two opposite ends in the transverse direction; a U-shaped elastic arm connected between the crossbeam and the rear side of the fixing portion; and a pair of elastic locks, respectively located at both ends of the crossbeam. The elastic lock includes: a cantilever extending a predetermined length along the longitudinal direction; a hook formed at the end of the cantilever for engaging with a mating housing of a mating connector; and a retaining portion formed at the root of the cantilever. When the hook engages with the mating housing, the retaining portion rests against the step portion of the housing along the longitudinal direction to increase the longitudinal engagement force between the hook and the mating housing.

[0006] According to an exemplary embodiment of the present invention, the connector locking member further comprises a connecting portion connected to the front side of the crossbeam. The connecting portion is configured to connect to an unlocking strap, and the U-shaped elastic arm is capable of deforming from an initial state to a predetermined deformed state under the pull of the unlocking strap. When the U-shaped elastic arm elastically deforms from the initial state to the predetermined deformed state, the hook moves downward from a locked position engaged with the mating housing to an unlocked position separated from the mating housing.

[0007] According to another exemplary embodiment of the present invention, the fixing portion, the U-shaped elastic arm and the connecting portion are located in the middle portion between the two ends of the beam; the connecting portion extends forward from the front side of the beam and is bent upward and backward, so that the connecting portion is U-shaped.

[0008] According to another exemplary embodiment of the present invention, a slot hole is formed on the connecting portion to allow one end of the unlocking belt to pass through, so as to allow the one end of the unlocking belt to be connected to the connecting portion.

[0009] According to another exemplary embodiment of the present invention, the crossbeam and the fixing portion are spaced apart from each other in a height direction perpendicular to the transverse and longitudinal directions; the crossbeam and the elastic lock are suspended above the fixing portion and can move upward and downward relative to the fixing portion.

[0010] According to another exemplary embodiment of the present invention, the connector locking member includes a pair of U-shaped elastic arms, and the pair of U-shaped elastic arms are spaced apart in the transverse direction to allow the unlocking belt to pass between the pair of U-shaped elastic arms.

[0011] According to another exemplary embodiment of the present invention, the fixing portion is in the shape of a plate extending in the transverse direction and the longitudinal direction and is adapted to be inserted into and fixed to a slot on the housing.

[0012] According to another exemplary embodiment of the present invention, the fixing portion has left and right sides opposite to each other in the transverse direction, and the left and right sides of the fixing portion are suitable for interference fit with inner walls of the slot of the shell to fix the fixing portion to the shell.

[0013] According to another exemplary embodiment of the present invention, a slot is formed on the fixing portion, and the slot is used to engage with a protrusion in the slot to fix the fixing portion to the housing.

[0014] According to another exemplary embodiment of the present invention, the retaining portion includes two side wings respectively connected to the left and right sides of the root of the cantilever; the front side of the side wing is suitable for abutting against the rear side of the step portion of the shell along the longitudinal direction to increase the longitudinal engagement force between the hook and the mating shell.

[0015] According to another exemplary embodiment of the present invention, the crossbeam is connected between the side wings of the pair of elastic locks.

[0016] According to another exemplary embodiment of the present invention, the cross-section of the cantilever is U-shaped and includes a pair of side plates opposite to each other in the transverse direction, a hook is formed at the end of each pair of side plates, and the two side wings are respectively connected to the roots of the pair of side plates.

[0017] According to another exemplary embodiment of the present invention, the connector locking member is an integral stamped and formed member.

[0018] According to another aspect of the present invention, a connector is provided. The connector comprises: a housing having a receiving groove and a stepped portion formed therein; and the aforementioned connector locking member mounted to the housing. The fixing portion is fixed to the housing, the crossbeam and the elastic locking catch are movably suspended in the receiving groove of the housing, and the hook is exposed from the receiving groove for engaging with a mating housing of a mating connector. When the hook engages with the mating housing, the retaining portion abuts against the stepped portion in the longitudinal direction of the housing to increase the longitudinal engagement force between the hook and the mating housing.

[0019] According to another exemplary embodiment of the present invention, a slot is formed on the housing, and the fixing portion is inserted into the slot on the housing in an interference fit manner to fix the fixing portion to the housing.

[0020] According to another exemplary embodiment of the present invention, a protrusion is formed in the slot of the housing, and the protrusion engages with the slot on the fixing portion to fix the fixing portion to the housing.

[0021] According to another exemplary embodiment of the present invention, the connector further includes: an unlocking strip connected to the connecting portion of the connector locking member and extending from the rear side of the shell, and the elastic lock buckle can be moved from a locked position engaged with the mating shell to an unlocked position separated from the mating shell under the pulling of the unlocking strip.

[0022] According to another exemplary embodiment of the present invention, a horizontal slot extending in the transverse and longitudinal directions of the shell is formed on the rear side of the shell, allowing the unlocking belt to pass through; one end of the unlocking belt is bent upward relative to the horizontal slot and connected to the connecting portion of the connector locking member.

[0023] According to another exemplary embodiment of the present invention, the connector further comprises: a rear cover mounted on the rear side of the shell, wherein a through hole for allowing the unlocking belt to pass through and an accommodating hole for accommodating the U-shaped elastic arm are formed on the rear cover.

[0024] According to another exemplary embodiment of the present invention, the back cover includes a cover plate and a plurality of first elastic buckles respectively connected to the left and right sides of the cover plate, and a first card slot is formed on the first elastic buckle; a first groove and a first protrusion located in the first groove are respectively formed on the outer sides of the left and right side walls of the shell, the first elastic buckle is positioned in the first groove, and the first protrusion is engaged in the first card slot.

[0025] According to another exemplary embodiment of the present invention, the back cover also includes a second elastic buckle connected to the left and right edges of the cover plate respectively, and a second protrusion is formed on the second elastic buckle; second card slots are respectively formed on the left and right side walls of the shell, the second elastic buckle is located on the inner side of the shell, and the second protrusion is engaged in the second card slot.

[0026] According to another exemplary embodiment of the present invention, a positioning protrusion and an engaging protrusion are formed on the upper side of the back cover, and a positioning groove and an engaging hole are formed on the top wall of the accommodating groove of the shell; the positioning protrusion and the positioning groove are dovetail-shaped and engaged with each other, and the engaging protrusion is engaged with the engaging hole.

[0027] According to another exemplary embodiment of the present invention, the connector further comprises: a circuit board installed in the housing for electrically contacting terminals in the mating connector.

[0028] In the aforementioned exemplary embodiments of the present invention, when the resilient latch of the connector lock engages with the mating housing, the retaining portion of the connector lock longitudinally abuts against the stepped portion of the housing, thereby ensuring a strong longitudinal engagement force between the resilient latch and the mating housing. Therefore, the present invention does not require strengthening the U-shaped spring arm, thereby not increasing the unlocking force of the connector lock.

[0029] Other objects and advantages of the present invention will become apparent from the following description of the present invention with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A perspective schematic diagram showing a connector according to an exemplary embodiment of the present invention;

[0031] Figure 2 A perspective view showing a connector locking member and an unlocking strip according to an exemplary embodiment of the present invention as viewed from the rear side;

[0032] Figure 3 A perspective schematic diagram showing a connector locking member and an unlocking strip according to an exemplary embodiment of the present invention as viewed from the front side;

[0033] Figure 4 A perspective schematic diagram showing a connector locking member according to an exemplary embodiment of the present invention as viewed from the rear side;

[0034] Figure 5 A perspective schematic diagram showing a connector locking member according to an exemplary embodiment of the present invention as viewed from the front side;

[0035] Figure 6 A horizontal cross-sectional view showing a connector according to an exemplary embodiment of the present invention;

[0036] Figure 7 An exploded schematic diagram showing a connector according to an exemplary embodiment of the present invention;

[0037] Figure 8 A vertical cross-sectional view showing a connector according to an exemplary embodiment of the present invention;

[0038] Figure 9 A perspective schematic diagram showing a connector according to an exemplary embodiment of the present invention, wherein a rear cover is shown;

[0039] Figure 10 A perspective schematic diagram shows a connector according to an exemplary embodiment of the present invention, wherein the rear cover has not yet been mounted on the housing. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be further described in detail below through examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as limiting the present invention.

[0041] In addition, in the following detailed description, for ease of explanation, numerous specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments can be practiced without these specific details. In other cases, well-known structures and devices are shown in diagrammatic form to simplify the accompanying drawings.

[0042] According to an overall technical concept of the present invention, a connector locking member is provided. The connector locking member includes: a fixing portion, which is used to be fixed to the housing of the connector and has a front side and a rear side opposite to each other in the longitudinal direction; a crossbeam, which extends in a transverse direction perpendicular to the longitudinal direction and has two opposite ends in the transverse direction; a U-shaped elastic arm, which is connected between the crossbeam and the rear side of the fixing portion; and a pair of elastic lock buckles, which are respectively located at the two ends of the crossbeam. The elastic lock buckle includes: a cantilever, which extends a predetermined length in the longitudinal direction; a hook, which is formed on the end of the cantilever, which is used to engage with the mating housing of the mating connector; and a retaining portion, which is formed at the root of the cantilever. When the hook is engaged with the mating housing, the retaining portion abuts against the step portion of the housing in the longitudinal direction to increase the longitudinal engagement force between the hook and the mating housing.

[0043] According to another general technical concept of the present invention, a connector is provided. The connector includes: a housing having a receiving slot and a stepped portion formed therein; and the aforementioned connector locking member mounted to the housing. The fixing portion is fixed to the housing, the crossbeam and the elastic locking catch are movably suspended in the receiving slot of the housing, and the hook is exposed from the receiving slot for engaging with a mating housing of a mating connector. When the hook engages with the mating housing, the retaining portion abuts against the stepped portion in the longitudinal direction of the housing to increase the longitudinal engagement force between the hook and the mating housing.

[0044] Figure 1 A perspective schematic diagram showing a connector according to an exemplary embodiment of the present invention; Figure 2 A perspective view showing a connector locking member 2 and an unlocking band 3 according to an exemplary embodiment of the present invention as viewed from the rear side; Figure 3 A perspective view showing a connector locking member 2 and an unlocking band 3 according to an exemplary embodiment of the present invention as viewed from the front side; Figure 4 A perspective schematic diagram showing a connector locking member 2 according to an exemplary embodiment of the present invention as viewed from the rear side; Figure 5 A perspective schematic diagram showing a connector locking member 2 according to an exemplary embodiment of the present invention as viewed from the front side; Figure 6 A horizontal cross-sectional view showing a connector according to an exemplary embodiment of the present invention; Figure 7 An exploded schematic diagram showing a connector according to an exemplary embodiment of the present invention; Figure 8 A vertical cross-sectional view showing a connector according to an exemplary embodiment of the present invention.

[0045] like Figures 1 to 8As shown, in an exemplary embodiment of the present invention, a connector locking member 2 is disclosed. The connector locking member 2 includes a fixing portion 22, a crossbeam 20, a U-shaped elastic arm 23, and a pair of elastic locks 21. The fixing portion 22 is used to be fixed to the housing 1 of the connector and has a front side and a rear side opposite to each other in the longitudinal direction Y. The crossbeam 20 extends in a transverse direction X perpendicular to the longitudinal direction Y and has two opposite ends in the transverse direction X. The U-shaped elastic arm 23 is connected between the crossbeam 20 and the rear side of the fixing portion 22. A pair of elastic locks 21 are respectively located at the two ends of the crossbeam 20. The elastic lock 21 includes a cantilever 210, a hook 211, and a retaining portion 213. The cantilever 210 extends a predetermined length in the longitudinal direction Y. The hook 211 is formed at the end of the cantilever 210 and is used to engage with the mating housing (not shown) of a mating connector (not shown). The retaining portion 213 is formed at the base 212 of the cantilever 210. When the hook 211 is engaged with the mating housing, the retaining portion 213 abuts against the step portion 12 of the housing 1 along the longitudinal direction Y to increase the longitudinal engagement force between the hook 211 and the mating housing.

[0046] like Figures 1 to 8 As shown, in the illustrated embodiment, the connector locking member 2 further includes a connecting portion 24 connected to the front side of the crossbeam 20. The connecting portion 24 is configured to connect to the unlocking strap 3. The U-shaped elastic arm 23 is capable of deforming from an initial state to a predetermined deformed state under the pull of the unlocking strap 3. When the U-shaped elastic arm 23 elastically deforms from the initial state to the predetermined deformed state, the hook 211 moves downward from a locked position engaged with the mating housing to an unlocked position separated from the mating housing.

[0047] like Figures 1 to 8 As shown, in the illustrated embodiment, the fixing portion 22, the U-shaped elastic arm 23 and the connecting portion 24 are located in the middle portion between the two ends of the crossbeam 20. The connecting portion 24 extends forward from the front side of the crossbeam 20 and is bent upward and backward, so that the connecting portion 24 is U-shaped.

[0048] like Figures 1 to 8 As shown, in the illustrated embodiment, a slot is formed on the connecting portion 24 for allowing one end 31 of the unlocking belt 3 to pass through, so as to allow the one end 31 of the unlocking belt 3 to be connected to the connecting portion 24 .

[0049] like Figures 1 to 8 As shown, in the illustrated embodiment, the crossbeam 20 and the fixing portion 22 are spaced apart from each other in a height direction Z perpendicular to the transverse direction X and the longitudinal direction Y. The crossbeam 20 and the elastic lock 21 are suspended above the fixing portion 22 and can move upward and downward relative to the fixing portion 22.

[0050] like Figures 1 to 8As shown, in the illustrated embodiment, the connector locking member 2 includes a pair of U-shaped elastic arms 23 , which are spaced apart in the transverse direction X to allow the unlocking strip 3 to pass between the pair of U-shaped elastic arms 23 .

[0051] like Figures 1 to 8 As shown, in the illustrated embodiment, the fixing portion 22 is in the shape of a plate extending in the transverse direction X and the longitudinal direction Y and is adapted to be inserted into and fixed to the slot 13 on the housing 1 .

[0052] like Figures 1 to 8 As shown, in the illustrated embodiment, the fixing portion 22 has left and right sides 22 a opposite to each other in the transverse direction X, and the left and right sides 22 a of the fixing portion 22 are suitable for interference fit with the inner wall of the slot 13 of the shell 1 to fix the fixing portion 22 to the shell 1.

[0053] like Figures 1 to 8 As shown, in the illustrated embodiment, a slot 22 b is formed on the fixing portion 22 , and the slot 22 b is used to engage with a protrusion in the slot 13 to fix the fixing portion 22 to the housing 1 .

[0054] like Figures 1 to 8 As shown, in the illustrated embodiment, the retaining portion 213 includes two side wings 213a connected to the left and right sides of the root 212 of the cantilever 210. The front sides of the side wings 213a are adapted to abut against the rear side of the step portion 12 of the housing 1 along the longitudinal direction Y to increase the longitudinal engagement force between the hook 211 and the mating housing.

[0055] like Figures 1 to 8 As shown, in the illustrated embodiment, the crossbeam 20 is connected between the side wings 213 a of a pair of elastic locks 21 .

[0056] like Figures 1 to 8 As shown, in the illustrated embodiment, the cross-section of the cantilever 210 is U-shaped and includes a pair of side plates 210a opposite to each other in the transverse direction X, a hook 211 is formed at the end of each pair of side plates 210a, and two side wings 213a are respectively connected to the roots of the pair of side plates 210a.

[0057] like Figures 1 to 8 As shown, in the embodiment shown in the figure, the connector locking member is an integral stamped and formed member, which can reduce manufacturing costs.

[0058] like Figures 1 to 8As shown, in another exemplary embodiment of the present invention, a connector is also disclosed. The connector includes: a shell 1 and the aforementioned connector locking member 2. A receiving groove 11 and a step portion 12 are formed in the shell 1. The connector locking member 2 is mounted to the shell 1. The fixing portion 22 of the connector locking member 2 is fixed to the shell 1. The crossbeam 20 and the elastic lock catch 21 of the connector locking member 2 are movably suspended in the receiving groove 11 of the shell 1, and the hook 211 is exposed from the receiving groove 11 for engaging with the mating shell of the mating connector. When the hook 211 engages with the mating shell, the retaining portion 213 abuts against the step portion 12 along the longitudinal direction Y of the shell 1 to increase the longitudinal engagement force between the hook 211 and the mating shell.

[0059] like Figures 1 to 8 As shown, in the illustrated embodiment, a slot 13 is formed on the housing 1 , and the fixing portion 22 is inserted into the slot 13 on the housing 1 in an interference fit manner to fix the fixing portion 22 to the housing 1 .

[0060] like Figures 1 to 8 As shown, in the illustrated embodiment, a protrusion is formed in the slot 13 of the housing 1 , and the protrusion engages with the slot 22 b on the fixing portion 22 to fix the fixing portion 22 to the housing 1 .

[0061] like Figures 1 to 8 As shown, in the illustrated embodiment, the connector further includes an unlocking strip 3, which is connected to the connecting portion 24 of the connector locking member 2 and extends from the rear side of the housing 1. The elastic lock buckle 21 can be moved from a locked position engaged with the mating housing to an unlocked position separated from the mating housing under the pull of the unlocking strip 3.

[0062] like Figures 1 to 8 As shown, in the illustrated embodiment, a horizontal slot 14 is formed on the rear side of the housing 1, extending in the transverse direction X and the longitudinal direction Y of the housing 1, and allowing the unlocking strap 3 to pass through. One end 31 of the unlocking strap 3 is bent upward relative to the horizontal slot 14 and connected to the connecting portion 24 of the connector locking member 2.

[0063] Figure 9 A perspective schematic diagram showing a connector according to an exemplary embodiment of the present invention, wherein a rear cover 5 is shown; Figure 10 A perspective schematic diagram of a connector according to an exemplary embodiment of the present invention is shown, wherein the rear cover 5 has not yet been mounted on the housing 1 .

[0064] like Figures 1 to 10 As shown, in the illustrated embodiment, the connector further comprises a rear cover 5, which is mounted on the rear side of the housing 1. A through hole 51 for allowing the unlocking belt 3 to pass through and an accommodating hole 52 for accommodating the U-shaped elastic arm 23 are formed on the rear cover 5.

[0065] like Figures 1 to 10 As shown, in the illustrated embodiment, the back cover 5 includes a cover plate 50 and a plurality of first elastic buckles 56 connected to the left and right sides of the cover plate 50, respectively. First engaging grooves 56a are formed on the first elastic buckles 56. First grooves 16 and first protrusions 16a located within the first grooves 16 are formed on the outer sides of the left and right side walls of the housing 1, respectively. The first elastic buckles 56 are positioned in the first grooves 16, and the first protrusions 16a are engaged in the first engaging grooves 56a.

[0066] like Figures 1 to 10 As shown, in the illustrated embodiment, the rear cover 5 further includes second elastic buckles 57 connected to the left and right sides of the cover plate 50, respectively. A second protrusion 57a ​​is formed on the second elastic buckle 57. Second engaging grooves 17 are formed on the left and right side walls of the housing 1, respectively. The second elastic buckle 57 is located on the inner side of the housing 1, and the second protrusion 57a ​​is engaged with the second engaging grooves 17.

[0067] like Figures 1 to 10 As shown, in the illustrated embodiment, a positioning protrusion 58 and an engaging protrusion 59 are formed on the upper side of the rear cover 5, and a positioning groove 18 and an engaging hole 19 are formed on the top wall of the accommodating groove 11 of the housing 1. The positioning protrusion 58 and the positioning groove 18 are dovetail-shaped and engage with each other, and the engaging protrusion 59 is engaged with the engaging hole 19.

[0068] like Figures 1 to 10 As shown, in the embodiment shown in the figure, the connector further comprises a circuit board 4. The circuit board 4 is installed in the housing 1 for electrically contacting terminals (not shown) in the mating connector.

[0069] Those skilled in the art will understand that the embodiments described above are exemplary and can be improved by those skilled in the art. The structures described in various embodiments can be freely combined without causing any conflicts in structure or principle. These changes should fall within the scope of protection of the present invention.

[0070] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplify the preferred embodiments of the present invention and should not be construed as limiting the present invention.

[0071] Although some embodiments of the general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.

[0072] It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. In addition, any element reference in the claims should not be construed as limiting the scope of the invention.

Claims

1. A connector locking member, characterized in that: include: a fixing portion (22) for fixing to the housing (1) of the connector and having a front side and a rear side opposite to each other in the longitudinal direction (Y); a crossbeam (20) extending in a transverse direction (X) perpendicular to the longitudinal direction (Y) and having two opposite ends in the transverse direction (X); A U-shaped elastic arm (23) connected between the crossbeam (20) and the rear side of the fixing portion (22); and A pair of elastic lock buckles (21) are respectively located at the two ends of the beam (20). The elastic lock buckle (21) comprises: a cantilever (210) extending a predetermined length along the longitudinal direction (Y); a hook (211) formed on the end of the cantilever (210) for engaging with a mating housing of a mating connector; and A retaining portion (213) is formed at the root (212) of the cantilever (210). When the hook (211) is engaged with the mating shell, the retaining portion (213) abuts against the step portion (12) of the shell (1) along the longitudinal direction (Y) to increase the longitudinal engagement force between the hook (211) and the mating shell.

2. The connector locking member according to claim 1, wherein: Also includes: A connecting portion (24) connected to the front side of the crossbeam (20), The connecting portion (24) is used to be connected to the unlocking belt (3), and the U-shaped elastic arm (23) can be deformed from an initial state to a predetermined deformation state under the pulling of the unlocking belt (3). When the U-shaped elastic arm (23) elastically deforms from the initial state to the predetermined deformation state, the hook (211) moves downward from a locking position engaged with the mating shell to an unlocking position separated from the mating shell.

3. The connector locking member according to claim 2, wherein: The fixing portion (22), the U-shaped elastic arm (23) and the connecting portion (24) are located at a middle portion between the two ends of the crossbeam (20); The connecting portion (24) extends forward from the front side of the crossbeam (20) and is bent upward and backward, so that the connecting portion (24) is U-shaped.

4. The connector locking member according to claim 3, wherein: A slot is formed on the connecting portion (24) to allow one end (31) of the unlocking belt (3) to pass through, so as to allow one end (31) of the unlocking belt (3) to be connected to the connecting portion (24).

5. The connector locking member according to claim 2, wherein: The crossbeam (20) and the fixing portion (22) are spaced apart and opposed to each other in a height direction (Z) perpendicular to the transverse direction (X) and the longitudinal direction (Y); The crossbeam (20) and the elastic lock catch (21) are suspended above the fixing portion (22) and are capable of moving upward and downward relative to the fixing portion (22).

6. The connector locking member according to claim 2, wherein: The connector locking member (2) comprises a pair of U-shaped elastic arms (23) which are spaced apart in the transverse direction (X) to allow the unlocking belt (3) to pass between the pair of U-shaped elastic arms (23).

7. The connector locking member according to claim 1, wherein: The fixing portion (22) is in the shape of a plate extending along the transverse direction (X) and the longitudinal direction (Y) and is suitable for being inserted into and fixed in the slot (13) on the housing (1).

8. The connector locking member according to claim 7, wherein: The fixing portion (22) has left and right sides (22a) opposite to each other in the transverse direction (X), and the left and right sides (22a) of the fixing portion (22) are suitable for interference fit with the inner wall of the slot (13) of the shell (1) to fix the fixing portion (22) to the shell (1).

9. The connector locking member according to claim 8, wherein: A slot hole (22b) is formed on the fixing portion (22), and the slot hole (22b) is used to engage with a protrusion in the slot (13) to fix the fixing portion (22) to the housing (1).

10. The connector locking member according to claim 1, wherein: The holding portion (213) includes two side wings (213a) respectively connected to the left and right sides of the root (212) of the cantilever (210); The front side of the side wing (213a) is suitable for abutting against the rear side of the step portion (12) of the shell (1) along the longitudinal direction (Y) to increase the longitudinal engagement force between the hook (211) and the matching shell.

11. The connector locking member according to claim 10, wherein: The crossbeam (20) is connected between the side wings (213a) of the pair of elastic lock buckles (21).

12. The connector locking member according to claim 10, wherein: The cross section of the cantilever (210) is U-shaped and includes a pair of side plates (210a) opposite to each other in the transverse direction (X), a hook (211) is formed at each end of the pair of side plates (210a), and the two side wings (213a) are respectively connected to the roots of the pair of side plates (210a).

13. The connector locking member according to any one of claims 1 to 12, characterized in that: The connector locking piece is an integral stamped part.

14. A connector, characterized in that: include: The housing (1) is formed with a receiving groove (11) and a step portion (12); and The connector locking member (2) according to any one of claims 1 to 13, mounted to the housing (1), The fixing portion (22) is fixed to the housing (1), the crossbeam (20) and the elastic lock catch (21) are movably suspended in the receiving groove (11) of the housing (1), and the hook (211) is exposed from the receiving groove (11) to engage with the mating housing of the mating connector. When the hook (211) is engaged with the mating shell, the retaining portion (213) abuts against the step portion (12) along the longitudinal direction (Y) of the shell (1) to increase the longitudinal engagement force between the hook (211) and the mating shell.

15. The connector according to claim 14, wherein: A slot (13) is formed on the housing (1), and the fixing portion (22) is inserted into the slot (13) on the housing (1) in an interference fit manner to fix the fixing portion (22) to the housing (1).

16. The connector according to claim 15, wherein: A protrusion is formed in the slot (13) of the housing (1), and the protrusion engages with the slot (22b) on the fixing portion (22) to fix the fixing portion (22) to the housing (1).

17. The connector according to claim 14, wherein: Also includes: an unlocking strap (3) connected to the connecting portion (24) of the connector locking member (2) and extending from the rear side of the housing (1), The elastic lock buckle (21) can be moved from a locking position engaged with the mating housing to an unlocking position separated from the mating housing under the pulling of the unlocking belt (3).

18. The connector according to claim 17, wherein: A horizontal slot (14) is formed on the rear side of the housing (1) and extends in the transverse direction (X) and the longitudinal direction (Y) of the housing (1) to allow the unlocking belt (3) to pass through; One end (31) of the unlocking strip (3) is bent upward relative to the horizontal slot (14) and connected to the connecting portion (24) of the connector locking member (2).

19. The connector according to claim 17, wherein: Also includes: A rear cover (5) is mounted on the rear side of the housing (1). A through hole (51) for allowing the unlocking belt (3) to pass through and an accommodating hole (52) for accommodating the U-shaped elastic arm (23) are formed on the back cover (5).

20. The connector according to claim 19, wherein: The back cover (5) comprises a cover plate (50) and a plurality of first elastic buckles (56) respectively connected to the left side and the right side of the cover plate (50), and a first card slot (56a) is formed on the first elastic buckle (56); A first groove (16) and a first protrusion (16a) located in the first groove (16) are respectively formed on the outer sides of the left and right side walls of the shell (1); the first elastic buckle (56) is positioned in the first groove (16); and the first protrusion (16a) is engaged in the first card slot (56a).

21. The connector according to claim 20, wherein: The back cover (5) further comprises a second elastic buckle (57) connected to the left side and the right side of the cover plate (50), respectively, and a second protrusion (57a) is formed on the second elastic buckle (57); Second card slots (17) are respectively formed on the left and right side walls of the shell (1), the second elastic buckle (57) is located on the inner side of the shell (1), and the second protrusion (57a) is engaged in the second card slot (17).

22. The connector according to claim 20, wherein: A positioning protrusion (58) and an engaging protrusion (59) are formed on the upper side of the rear cover (5), and a positioning groove (18) and an engaging hole (19) are formed on the top wall of the accommodating groove (11) of the housing (1); The positioning protrusion (58) and the positioning groove (18) are dovetail-shaped and engage with each other, and the engaging protrusion (59) is engaged with the engaging hole (19).

23. The connector according to claim 14, wherein: Also includes: A circuit board (4) is installed in the housing (1) and is used for electrical contact with terminals in the mating connector.

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