Double-locking electrical connector

Abstract

The utility model relates to a dual-locking electrical connector, and relates to the technical field of connectors, the dual-locking electrical connector comprises an electrical terminal, a first shell, a second shell, a first locking piece and an adjusting assembly, the first shell covers part of the electrical terminal, and a spring bolt is convexly arranged on the side wall of the first shell; a notch is formed in the second shell, and the lock tongue is exposed out of the notch; the first locking piece is fixed to the side wall of the second shell, the first locking piece comprises a first end and a second end, the first end can be buckled with the spring bolt to lock the first shell and the second shell for the first time, and the second end and the side wall of the second shell are arranged in a spaced mode; the adjusting assembly is connected to the second shell in a sliding mode, and the adjusting assembly can move back and forth along the notch so as to unlock the first end or lock the second end. The problem that an existing electrical connector only has a single locking function and is prone to loosening under vibration or other severe conditions can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of connectors, in particular to a double locking electrical connector. BACKGROUND

[0002] The electrical connector is a connecting component between electrical devices, and its stability directly affects the normal operation of the electrical system.

[0003] At present, the electrical connector on the market includes an electrical terminal, a first shell, a second shell and a first locking piece. The electrical terminal is partially arranged in the first shell. The first shell protrudes with a lock tongue. The first locking piece is fixed on the second shell. The first shell and the second shell are locked by the first locking piece to realize the first locking of the first shell and the second shell.

[0004] This electrical connector connected by a single locking structure can meet the use requirements in general cases, but its connection stability is insufficient in vibration or some harsh environments, and it is easy to loosen or fall off, thereby affecting the safety and reliability of the entire electrical system. CONTENT OF THE UTILITY MODEL

[0005] The present application provides a double locking electrical connector to solve the problem that the current electrical connector has only a single locking function and is easy to loosen in vibration or other harsh conditions.

[0006] In a first aspect, the present application provides a double locking electrical connector, comprising:

[0007] an electrical terminal;

[0008] a first shell covering part of the electrical terminal, the side wall of the first shell protruding with a lock tongue;

[0009] a second shell covering the first shell, the second shell being provided with a slot, and the slot exposing the lock tongue;

[0010] a first locking piece fixed to the side wall of the second shell and corresponding to the slot, the first locking piece including a first end and a second end. The first end can be buckled with the lock tongue to lock the first shell and the second shell for the first time. The second end is arranged in a spaced manner with the side wall of the second shell; and

[0011] an adjusting assembly slidably connected to the second shell, the adjusting assembly being capable of reciprocating along the slot to unlock the first end or lock the second end.

[0012] By adopting the technical scheme, the first end of the first locking member is buckled with the lock tongue to first lock the first shell and the second shell, the adjusting assembly can move back and forth along the slot, the first end can be unlocked or the second end can be locked, a double locking structure of the electrical connector is realized, and the stability and safety of the connection are enhanced.

[0013] In one of the embodiments, the adjusting assembly comprises:

[0014] The dial block comprises a through hole at two ends, the dial block is movably arranged on the side wall of the second shell, and the through hole can accommodate the second end of the first locking member.

[0015] The second locking member comprises a chair-shaped body, an abutting arm connected with the chair-shaped body, and an extension arm, the extension arm and the abutting arm are located on the same side of the chair-shaped body, the abutting arm extends into the through hole and abuts the second end in the through hole, and the extension arm is located below the dial block to control the distance of the second locking member moving along the slot.

[0016] By adopting the technical scheme, the abutting arm extends into the dial block and abuts the second end, the dial block is prevented from being pressed, the second end moves downward, and the first end is separated from the lock tongue; the extension arm can fix the second locking member, the second locking member is stably abutted against the second end, and the stability of the connection is enhanced.

[0017] In one of the embodiments, the abutting arm is wedge-shaped, and the end of the extension arm is provided with a wedge surface.

[0018] By adopting the technical scheme, the wedge-shaped structure makes the abutting arm firmly cooperate with the second end and be fixed in the dial block, and the stability of the connection is enhanced; the wedge surface of the extension arm is convenient for abutting against the second shell and preventing the second locking member from moving.

[0019] In one of the embodiments, the extension arm comprises a guide arm parallel to the abutting arm and a stop arm connected with the guide arm, the guide arm is located below the dial block, the second shell is provided with a limiting groove exposed by the slot and limiting the stop arm, in the locked state of the second locking member, the stop arm is located in the limiting groove and abuts against one end of the limiting groove close to the first shell, and in the unlocked state of the second locking member, the stop arm abuts against the rear end of the limiting groove.

[0020] By adopting the technical scheme, the design of the guide arm and the stop arm makes the second locking member accurately extend into the limiting groove and abut against the second shell for limiting, and the position and movement range of the second locking member in the slot are ensured.

[0021] In one of the embodiments, the slot comprises a first slot, a second slot and a third slot penetrating through the second housing sidewall, the third slot being located between the first slot and the second slot, the bottom of the chair body is provided with a first leg and a second leg respectively, the first leg and the second leg are both L-shaped, the first leg and the second leg are arranged to face each other, the first leg and the second leg are moved along the first slot and the second slot respectively, and the stop arm is moved along the third slot.

[0022] By adopting the above technical scheme, the design of the first slot, the second slot and the third slot provides more adjustment space and flexibility, so that the first leg and the second leg are conveniently moved, more precise adjustment is realized, and the second locking member can be more conveniently inserted into the block and locked.

[0023] In one of the embodiments, two L-shaped guide rails are protruded on the second housing, the two guide rails are located outside the first slot and the second slot respectively, the block is arranged on the guide rail and can be moved in the extension direction of the guide rail, and the first locking member is arranged in the area defined by the two guide rails.

[0024] By adopting the above technical scheme, the design of the L-shaped guide rail provides stable guidance for the block, and at the same time limits the movement range of the first locking member, thereby increasing the stability of the structure.

[0025] In one of the embodiments, the two ends of the guide rail are further provided with a front stop portion and a rear stop portion, a stop block is arranged on the sidewall of the block, and the front stop portion and the rear stop portion limit the movement range of the stop block.

[0026] By adopting the above technical scheme, the design of the front stop portion and the rear stop portion limits the movement range of the block, prevents damage or unlocking caused by excessive movement, and improves the safety of the locking.

[0027] In one of the embodiments, a first screw hole is formed in the guide rail, a second screw hole is formed in the first locking member, and the first screw hole and the second screw hole correspond to each other for the nut to pass through.

[0028] By adopting the above technical scheme, the corresponding design of the first screw hole and the second screw hole allows the nut to be fixed, thereby enhancing the stability of the structure, and the second screw hole is located in the middle of the first locking member, so that when one end of the first locking member descends, the other end rises.

[0029] In one of the embodiments, the sidewall of the first housing is protruded with oppositely arranged baffles and a connecting plate horizontally connecting the two baffles, the lock tongue is protruded on the connecting plate, and the height of the lock tongue is not higher than that of the baffle.

[0030] By adopting the technical scheme, the lock tongue is between the baffles and does not exceed the baffles, preventing the lock tongue from being damaged during the connection process and improving the durability.

[0031] In one of the embodiments, the guide rail abuts against the baffle.

[0032] By adopting the technical scheme, the guide rail abutting against the baffle provides additional support and enhances the stability of the entire structure.

[0033] In summary, the present application has at least one of the following beneficial technical effects:

[0034] 1. The first end of the first locking member is buckled with the lock tongue to first lock the first shell and the second shell, and the adjusting assembly can move back and forth along the slot, which can unlock the first end or lock the second end, realizing a double locking structure of the electrical connector, and enhancing the stability and safety of the connection.

[0035] 2. The abutting arm extends into the push block and abuts against the second end, preventing the push block from being pressed to move the second end downward, and the first end from being separated from the lock tongue, and the extension arm can fix the second locking member, ensuring that the second locking member stably abuts against the second end and enhancing the stability of the connection.

[0036] 3. The design of the guide arm and the stop arm enables the second locking member to accurately extend into the limiting groove to abut against the limit, ensuring the correct position and movement range of the second locking member in the slot. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a structural schematic diagram of a double locking electrical connector provided by an embodiment of the present application;

[0038] Figure 2 is a top view structural schematic diagram of a second shell provided by an embodiment of the present application;

[0039] Figure 3 is a structural schematic diagram of a first locking member provided by an embodiment of the present application;

[0040] Figure 4 is a structural schematic diagram of a push block provided by an embodiment of the present application;

[0041] Figure 5 is a top view structural schematic diagram of a second locking member provided by an embodiment of the present application;

[0042] Figure 6 is a sectional view schematic diagram of the second locking member in an unlocked state provided by an embodiment of the present application;

[0043] Figure 7 is Figure 6 a local enlarged view of A in FIG. 8;

[0044] Figure 8 is a sectional view of a second locking member in a locking state provided by the embodiment of the application;

[0045] Figure 9 is Figure 8 is a partial enlarged view of B in FIG. 1.

[0046] The reference signs: 1, double locking electrical connector; 11, electrical terminal; 12, first shell; 121, locking tongue; 122, baffle; 123, connecting plate; 13, second shell; 131, notch; 132, limiting groove; 133, first groove; 134, second groove; 135, third groove; 136, guide rail; 137, front stop; 138, rear stop; 139, first screw hole; 14, first locking member; 141, first end; 142, second end; 143, second screw hole; 144, through hole; 15, adjusting assembly; 16, push block; 161, insertion hole; 162, stop block; 17, second locking member; 171, chair-shaped body; 172, abutting arm; 173, extension arm; 174, wedge surface; 175, guide arm; 176, stop arm; 177, first leg; 178, second leg. DETAILED DESCRIPTION

[0047] The following refers to Figures 1-9 The double locking electrical connector provided by the embodiment of the application is described.

[0048] The double locking electrical connector 1 provided by the embodiment of the application comprises an electrical terminal 11, a first shell 12, a second shell 13, a first locking member 14, and an adjusting assembly 15.

[0049] As shown in FIG. 1, the first shell 12 covers part of the electrical terminal 11, and a locking tongue 121 is protruded on the side wall of the first shell 12. Specifically, the first shell 12 is made of ABS engineering plastic or polycarbonate (PC) material, which has good mechanical strength and insulation performance. The locking tongue 121 is made of stainless steel or brass material, which has good elasticity and corrosion resistance. Figure 1 The second shell 13 is located on the side of the first shell 12 away from the electrical terminal 11 and covers the first shell 12. The second shell 13 is provided with a notch 131, which can be used to expose the locking tongue 121. The second shell 13 is made of aluminum alloy material, and the surface is subjected to anodic oxidation treatment to enhance corrosion resistance. In this embodiment, the notch 131 is a long strip shape and penetrates through the second shell 13.

[0050]

[0051] ​The side wall of the first shell 12 is provided with two opposite baffles 122 and a connecting plate 123 connecting the two baffles 122. The connecting plate 123 is located in the slot 131 and extends towards the second shell 13. The locking tongue 121 is provided on the connecting plate 123 and has a height not higher than the baffles 122. The baffles 122 are made of aluminum alloy and have a height higher than the connecting plate 123 to protect the locking tongue 121.

[0052] The slot 131 further includes a first slot 133, a second slot 134 and a third slot 135 extending through the side wall of the second shell 13 and extending towards the first shell 12. The third slot 135 is located between the first slot 133 and the second slot 134. The first slot 133 and the second slot 134 have a mirror image symmetric structure.

[0053] The first locking member 14 is fixed to the side wall of the second shell 13 and corresponds to the slot 131 and is located above the slot 131. The first locking member 14 is made of brass or stainless steel to ensure good elasticity and clamping effect. The first locking member 14 includes a first end 141 close to the first shell 12 and a second end 142 away from the first shell 12. The first end 141 of the first locking member 14 is located between the two baffles 122. The first locking member 14 is further provided with a through hole 144 located at the first end 141. The locking tongue 121 passes through the through hole 144 to facilitate the first locking of the first shell 12 and the second shell 13. The second end 142 has a gap with the side wall of the second shell 13. The first locking member 14 can be a lever structure. Pressing the second end 142 allows the first end 141 to move upwards and disengage from the locking tongue 121, thereby separating the first shell 12 and the second shell 13.

[0054] The second shell 13 is further provided with two L-shaped guide rails 136. The two guide rails 136 are arranged opposite to each other and extend towards the first shell 12 and abut against the two baffles 122. The first slot 133, the second slot 134 and the third slot 135 are located between the two guide rails 136. The guide rail 136 is provided with a first screw hole 139. The first locking member 14 is provided with a second screw hole 143 located between the first end 141 and the second end 142. The first screw hole 139 corresponds to the second screw hole 143 for the nut to pass through, thereby fixing the first locking member 14 on the second shell 13.

[0055] The adjustment assembly 15 is slidingly connected to the second shell 13. The adjustment assembly 15 can move back and forth in the slot 131 to unlock the first end 141 or lock the second end 142.

[0056] As Figure 4 and Figure 5As shown, the adjusting assembly 15 comprises a dial block 16 and a second locking member 17. The dial block 16 is a hollow cylindrical structure, and a hole 161 is formed in the dial block 16 and extends through opposite ends of the dial block 16. The hole 161 has a diameter suitable for the second end 142 of the first locking member 14. The dial block 16 is made of PA6 nylon material, which has good wear resistance and anti-aging properties.

[0057] The dial block 16 is arranged between the two guide rails 136 and can move in the extension direction of the guide rails 136. The two ends of the guide rails 136 are further provided with a front stop portion 137 close to the first housing 12 and a rear stop portion 138 away from the first housing 12. A stop block 162 is arranged on the side wall of the dial block 16. The front stop portion 137 limits the forward movement range of the stop block 162, and the rear stop portion 138 limits the rearward movement range of the stop block 162. It should be noted that forward refers to the direction close to the latch bolt 121, and rearward refers to the direction away from the latch bolt 121. The dial block 16 can protect the second end 142, so as to avoid the second end 142 from being warped and causing the first end 141 to move away from the latch bolt 121, thereby causing the first housing 12 and the second housing 13 to be loosened.

[0058] The second locking member 17 comprises a chair-shaped main body 171, an abutting arm 172, and an extension arm 173.

[0059] First and second legs 177 and 178 are respectively protruded on both sides of the bottom of the chair-shaped main body 171 and correspond to the first and second grooves 133 and 134. The first and second legs 177 and 178 are both L-shaped and face the first and second grooves 133 and 134. The first and second legs 177 and 178 respectively extend into the first and second grooves 133 and 134 and move along the extension direction thereof. The chair-shaped main body 171 is made of spring steel material and has excellent elasticity and hardness.

[0060] The abutting arm 172 extends towards the first housing 12 and has a wedge-shaped structure. The abutting arm 172 is located below the second end 142 and is shaped to fit the second end 142. The abutting arm 172 can fill the hole 161 together with the second end 142, so as to ensure that there is no gap between the abutting arm 172 and the second end 142.

[0061] The extension arm 173 comprises a guide arm 175 parallel to the abutting arm 172 and a stop arm 176 connected to the guide arm 175 and extending downward. The guide arm 175 and the stop arm 176 are both located below the dial block 16. The guide arm 175 extends towards the first housing 12 and has a wedge surface 174 at the front end thereof. The second housing 13 is further provided with a limiting groove 132 located above the slot 131 and limiting the stop arm 176. The stop arm 176 is made of elastic material, and the lower end thereof can have a trapezoidal structure, so as to facilitate elastic deformation of the stop arm 176 in the limiting groove 132.

[0062] AsFigures 6-9 As shown, the dial block 16 is arranged between the two guide rails 136, the second threaded hole 143 of the first locking member 14 is fixed with the guide rail 136 by a bolt, the first end 141 of the first locking member 14 is buckled with the lock tongue 121, and the second end 142 is limited in the dial block 16. The dial block 16 slides in the direction away from the first shell 12 until the stop block 162 abuts against the rear stop portion 138, the second end 142 of the first locking member 14 is inserted into the insertion hole 161 of the dial block 16, the first end 141 is pressed, the lock tongue 121 is arranged through the first end 141, and the first locking of the first shell 12 and the second shell 13 is realized.

[0063] When the second locking member 17 is in the unlocking state, the first leg 177 and the second leg 178 are respectively located in the first groove 133 and the second groove 134, the guide arm 175 and the stop arm 176 are located in the limiting groove 132, one end of the stop arm 176 abuts against the end of the limiting groove 132 away from the first shell 12, the other end of the stop arm 176 abuts against the end of the connecting plate 123 away from the first shell 12, and the abutting arm 172 is located outside the dial block 16; the staff controls the chair body 171 to move in the direction close to the first shell 12, the stop arm 176 elastically rises and moves in the limiting groove 132, the wedge surface 174 at the front end of the guide arm 175 is separated from the limiting groove 132 and extends into the third groove 135 and abuts against the third groove 135, the stop arm 176 abuts against the end of the limiting groove 132 close to the first shell 12 and extends downward into the connecting plate 123 and is fixed, the second locking member 17 is limited to further move, the abutting arm 172 is inserted into the dial block 16 to lock the second end 142, the second locking member 17 enters the locking state, and the second locking of the first shell 12 and the second shell 13 is realized.

[0064] The staff controls the second locking member 17 to move in the direction away from the first shell 12, the stop arm 176 elastically rises to make the wedge surface 174 separate from the third groove 135, the stop arm 176 moves in the limiting groove 132 and finally separates from the second shell 13, the dial block 16 is pressed, and the separation of the first shell 12 and the second shell 13 is realized.

[0065] The implementation principle of the embodiment is that: the first end 141 of the first locking member 14 is buckled with the locking tongue 121 to realize the first locking, ensuring the stability of the initial installation. Then, the second locking member 17 included in the adjusting assembly 15 is moved along the direction close to the first shell 12 in the slot 131, so that the stop arm 176 is fixed in the limiting slot 132, the wedge surface 174 at the front end of the guide arm 175 is fixed in the third slot 135, the second locking member 17 is stably abutted against the second end 142, the locking of the second end 142 is realized, the purpose of the second locking is achieved, and thus a more reliable locking effect is realized. When the electrical terminal 11 needs to be repaired and replaced, the second locking member 17 is controlled to move away from the first shell 12, the guide arm 175 and the stop arm 176 are both loosened, the abutting arm 172 is separated from the insertion hole 161, the second end 142 is loosened, and the first shell 12 and the second shell 13 are unlocked.

[0066] In summary, through the design of the extension arm 173 and the limiting slot 132, the position of the second locking member 17 can be limited, so that the second locking member 17 is more stably connected with the second shell 13 and stably abutted against the second end 142. Through the first slot 133, the second slot 134 and the third slot 135 arranged on the second shell 13, the second locking member 17 is facilitated to move on the second shell 13.

[0067] Through the design of the guide rail 136, the movement range of the dial block 16 is limited, the dial block 16 is stably connected with the second end 142 and the abutting arm 172, and the locking of the second end 142 is completed; through the connection of the first locking member 14 and the guide rail 136, the second end 142 is pressed, the first end 141 can be lifted, and the first shell 12 and the second shell 13 are facilitated to be unlocked.

[0068] Through the design of the baffle 122 and the connecting plate 123, not only the structural rigidity of the first shell 12 is strengthened, but also effective protection measures are provided for the locking tongue 121, the possibility of damage caused by external factors is reduced, and the continuous and stable work for a long time is ensured.

[0069] The above are preferred embodiments of the application, which do not limit the protection scope of the application, therefore: any equivalent changes made on the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A double-locking electrical joint, characterized in that, The utility model relates to an electric terminal (11) and a locking device thereof, and the locking device comprises: an electric terminal (11); a first shell (12) covering the electric terminal (11), the first shell (12) having a locking tongue (121) on the side wall thereof; a second shell (13) covering the first shell (12), the second shell (13) having a slot (131) exposing the locking tongue (121); a first locking member (14) fixed to the side wall of the second shell (13) and corresponding to the slot (131), the first locking member (14) comprising a first end (141) and a second end (142), the first end (141) being capable of being buckled with the locking tongue (121) to lock the first shell (12) and the second shell (13) for the first time, and the second end (142) being spaced apart from the side wall of the second shell (13); and an adjusting assembly (15) slidingly connected to the second shell (13), the adjusting assembly (15) being capable of moving back and forth along the slot (131) to unlock the first end (141) or lock the second end (142).

2. Double locking electrical joint according to claim 1, characterized in that, The adjusting assembly (15) comprises: a dial block (16) having a through hole (161) at both ends, the dial block (16) being movably arranged on the side wall of the second shell (13), and the through hole (161) being capable of accommodating the second end (142) of the first locking member (14); and a second locking member (17) comprising a chair-shaped main body (171), an abutting arm (172) connected to the chair-shaped main body (171), and an extension arm (173), the extension arm (173) and the abutting arm (172) being located on the same side of the chair-shaped main body (171), the abutting arm (172) extending into the through hole (161) and abutting the second end (142) in the through hole (161), and the extension arm (173) being located below the dial block (16) to control the distance of the second locking member (17) moving along the slot (131).

3. Double locking electrical joint according to claim 2, characterized in that, The abutting arm (172) is wedge-shaped, and the end of the extension arm (173) is provided with a wedge surface (174).

4. Double locking electrical joint according to claim 3, characterized in that, The extension arm (173) comprises a guide arm (175) parallel to the abutting arm (172) and a stop arm (176) connected to the guide arm (175), the guide arm (175) being located below the dial block (16), the second shell (13) being provided with a limiting groove (132) capable of being exposed by the slot (131) and limiting the stop arm (176), the stop arm (176) being located in the limiting groove (132) and abutting against one end of the limiting groove (132) close to the first shell (12) when the second locking member (17) is in the locked state, and the stop arm (176) abutting against the rear end of the limiting groove (132) when the second locking member (17) is in the unlocked state.

5. Double locking electrical joint according to claim 4, characterized in that, The notch (131) comprises a first slot (133), a second slot (134) and a third slot (135) penetrating the sidewall of the second shell (13), the third slot (135) is located between the first slot (133) and the second slot (134), the bottom of the chair body (171) is provided with a first supporting leg (177) and a second supporting leg (178), the first supporting leg (177) and the second supporting leg (178) are both L-shaped, the first supporting leg (177) and the second supporting leg (178) are arranged to face each other, the first supporting leg (177) and the second supporting leg (178) are moved along the first slot (133) and the second slot (134) respectively, and the stop arm (176) is moved along the third slot (135).

6. Double locking electrical joint according to claim 5, characterized in that, The second shell (13) is provided with two L-shaped guide rails (136), the two guide rails (136) are located outside the first slot (133) and the second slot (134) respectively, the push block (16) is arranged on the guide rail (136) and can move in the extension direction of the guide rail (136), and the first locking piece (14) is arranged in the area defined by the two guide rails (136).

7. Double locking electrical joint according to claim 6, characterized in that The two ends of the guide rail (136) are further provided with a front stop portion (137) and a rear stop portion (138), the sidewall of the push block (16) is provided with a stop block (162), and the front stop portion (137) and the rear stop portion (138) limit the movement range of the stop block (162).

8. Double locking electrical joint according to claim 6, characterized in that, The guide rail (136) is provided with a first screw hole (139), the first locking piece (14) is provided with a second screw hole (143), and the first screw hole (139) and the second screw hole (143) correspond to each other for the nut to pass through.

9. Double locking electrical joint according to claim 6, characterized in that, The sidewall of the first shell (12) is provided with oppositely arranged baffle plates (122) and a connecting plate (123) horizontally connecting the two baffle plates (122), the lock tongue (121) is provided on the connecting plate (123), and the height of the lock tongue (121) is not higher than that of the baffle plate (122).

10. Double locking electrical joint according to claim 9, characterized in that The guide rail (136) abuts against the baffle plate (122).

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