Locking mechanism for MSD switch and connector comprising locking mechanism
By designing the push mechanism of the directional groove and the protruding part in the locking mechanism of the MSD switch, it is ensured that the secondary locking is performed only after the lock is completed. The problem improves the performance and safety.
Patent Information
- Application Number
- CN202421103999.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-20
AI Technical Summary
In the prior art, the secondary locking of the MSD switch may be locked before the primary locking, resulting in the connector plug and socket not being tightly connected, and problems such as poor signal contact, interrupted signal transmission, and risk of leakage.
Design a lock mechanism for the MSD switch. By setting the first -oriented slot and the second -oriented slot on the connection handle, using the first tightening of the second locking parts and the third locking The protruding part is pushed with each other to ensure that the secondary locking is performed only after the lock is completed, and the locking parts are avoided.
Effectively avoid the problem of not close connection between the connector and socket connection, reduce the risk of leakage, and improve the performance and safety of the MSD switch.
Smart Images
Figure CN222422563U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of connectors, in particular to a locking mechanism for an MSD switch and a connector comprising the locking mechanism. Background Art
[0002] The high-voltage distribution box of new energy electric vehicles generally has an operating voltage range of 450V-750V, a current of up to 400A, and a protection level of IP67. When inspecting all high-voltage systems of the vehicle, you must first unplug the MSD switch on the high-voltage distribution box. The full English name of the MSD switch is Manual Service Disconnect, which is a manual maintenance switch. The MSD switch and the high-voltage distribution box can be plugged in and out to realize the plug-in and use of the MSD switch.
[0003] In order to ensure the safety of the MSD switch being connected to the distribution box again, a connection handle is usually set. By connecting and rotating the connection handle, the two shells of the connector plug and the socket are fastened, and then the handle and the shell are set with a secondary lock to realize a double-locking locking mechanism. However, the primary locking of this type of locking mechanism is connected to the connector shell through the handle alone, and the secondary locking is connected to the handle alone through the locking plate. In the process of inserting the locking plate, the secondary locking cannot be associated with whether the primary locking is in a locked state. There is a situation where the secondary locking is performed when the primary locking is not implemented or the primary locking is not performed, resulting in the connector plug and the socket still not being tightly connected, resulting in poor signal contact and signal transmission interruption, which causes a bad user experience for the vehicle user; and even if the connector plug and the socket are not disconnected, there is a risk of leakage when the connector is not tightly connected.
[0004] In addition, since the locking plate of this type of locking mechanism is inserted into the handle before the first locking, the connected handle will be locked in place for a second time when it is not in use. When locking again, the locking plate needs to be pulled out again to release the locking component, thereby increasing the frequency of plugging and unplugging the locking plate, causing increased friction and easy damage, shortening its service life. In addition, the locking plate needs to be stored separately from the handle, which may cause the locking plate to be easily lost. Utility Model Content
[0005] The purpose of the utility model is to provide a locking mechanism for an MSD switch, which includes: a connecting handle, a secondary locking member, a first locking portion and a second locking portion respectively arranged on the connecting handle and the housing, wherein the first locking portion and the second locking portion can be elastically matched and locked; the connecting handle is provided with a first guide groove and a second guide groove respectively located on both sides of the first locking portion, and the secondary locking member is provided with a first locking portion connected at the root thereof. A clamping member and a third locking portion, the first clamping member can pass through the first guide groove, and then press the first locking portion against the second locking portion; the third locking portion can be guided by the second guide groove, and then move synchronously with the first clamping member; the front end of the third locking portion is provided with a first protrusion protruding toward the shell body, the groove wall of the second guide groove is provided with a second protrusion protruding in the opposite direction to the first protrusion, and the outer wall of the shell is provided with a third protrusion protruding in the same direction as the second protrusion; the third protrusion is adjacent to one end of the second locking portion for locking, the third protrusion can be located on the side of the second protrusion, and the first protrusion can push the second protrusion and the third protrusion respectively.
[0006] The utility model provides a first guide groove and a second guide groove respectively on the connecting handle, and the first locking member of the secondary locking member can press the first locking portion against the second locking portion through the first guide groove to realize the secondary locking. On the basis of providing a third locking portion that can penetrate into the second guide groove, a first protrusion is provided on the third locking portion, and a second protrusion is provided in the second guide groove with a protruding direction opposite to the first protrusion. The mutual pushing action of the second protrusion and the first protrusion can limit the third locking portion, thereby avoiding the third locking portion being locked in place before the primary locking. A third protrusion is further provided on the shell body with a protruding direction identical to the second protrusion, and the third protrusion is adjacent to an end locked by the second locking portion. If the primary locking If the tightening is not completed, there is still a distance between the first locking part and the second locking part, and the first protrusion will not contact the third protrusion, and the third protrusion and the first protrusion will not push each other, so that the third locking part and the first locking member are simultaneously limited by the second protrusion through the action of the first protrusion, and then the first locking member cannot play a secondary locking role before the first locking is completed, avoiding the secondary locking before the first locking is completed, so that the secondary locking must be locked after the first locking, avoiding the loose connection between the connecting handle and the shell due to the loose locking of the first time, avoiding the occurrence of poor signal contact and interruption of signal transmission, reducing the risk of leakage, and improving the performance of the MSD switch.
[0007] The locking mechanism of the utility model, when the primary locking is completed, pushes the secondary locking piece toward the first guide groove and the second guide groove, so that the first protrusion of the third locking part is pushed and approaches the third protrusion, and pushes the third protrusion located on the side of the second protrusion, so that the first protrusion is elastically deformed in the direction away from the third protrusion and is lifted up, thereby breaking away from the pushing of the second protrusion, and releasing the limitation of the second protrusion; the third locking part and the root of the first abutting piece are fixedly connected, so that the third locking part and the first abutting piece can continue to be pushed forward synchronously, so that the first abutting piece is secondarily locked and the third locking part is synchronously locked in place, thereby ensuring that the secondary locking connection is tighter when the primary locking is completed, improving the tightness of the connector connection, and thus improving the safety of use;
[0008] In addition, in the utility model, even if the connecting handle and the shell are not connected, when the secondary locking piece is placed in the connecting handle, the first locking piece is simultaneously limited by the limiting action of the second protrusion, so that it will not be pressed against the first locking part; and, when the connecting handle and the shell need to be connected, it is only necessary to push the secondary locking piece, without removing or withdrawing the secondary locking piece. On the one hand, it is convenient to use, and on the other hand, it reduces the disassembly friction of the secondary locking piece. In particular, in the utility model, the locking effect can only be generated through the elastic deformation of the secondary locking piece and the first locking part. The disassembly friction and multiple deformation can easily lead to elastic failure and damage. The above design can reduce damage and extend the service life of the locking mechanism.
[0009] Preferably, in the locking mechanism for an MSD switch of the present invention, the second protrusion comprises: at least two protrusions that can be located on both sides of the third protrusion.
[0010] As a preferred solution of the utility model, by setting the second protrusions to at least two that can be located on both sides of the third protrusion, on the one hand, the limiting of the first protrusion by the two second protrusions is easier to balance and prevent the first protrusion from slipping; on the other hand, the third protrusion is located on the inner side of the two second protrusions, and during the process of the third locking part being pushed forward, it is easier to be pushed by the third protrusion and elastically deform, thereby further reducing the failure rate of the locking mechanism and improving the performance of the locking mechanism.
[0011] Preferably, in the locking mechanism for the MSD switch described in the present invention, the first locking member is configured as a cross bar, both ends of which are connected to the secondary locking member by integral molding; the long side direction of the cross bar can be perpendicular to the extension direction of the first locking portion.
[0012] Since the elastic deformation direction of the first locking part is perpendicular to the extension direction of the first locking part, this preferred solution makes the angle between the pressing force of the first pressing part on the first locking part and the elastic deformation force approach 180° by setting the first pressing part of the secondary locking part as a cross bar, and the long side direction of the cross bar can be perpendicular to the extension direction of the first locking part, thereby increasing the effect of the first pressing part, and by setting the cross bar, the force arm for pressing the first locking part is increased. Similarly, increasing the effect of the first pressing part can enhance the locking effect of the secondary locking, more effectively avoid the possibility of elastic rebound of the first locking part, and enhance the locking effect.
[0013] Preferably, in the locking mechanism of the tram MSD switch described in the utility model, a second retaining member is provided at one end of the secondary locking member away from the first retaining member, and the second retaining member can be fastened to the side of the first locking portion facing away from the first retaining member.
[0014] As a preferred solution of the utility model, a second pressing member is provided at an end of the secondary locking member away from the first pressing member. After the secondary locking member is inserted into the connecting handle, the first pressing member presses against the first locking portion from the direction toward the shell body, and the second pressing member presses against an end of the root of the first locking portion at an end away from the first pressing member and on the side opposite to the pressing direction of the first pressing member, thereby avoiding elastic deformation of the other end of the first locking portion, further enhancing the pressing effect on the first locking portion, further enhancing the locking force of the secondary locking, and enhancing the locking effect.
[0015] Preferably, in the locking mechanism for the MSD switch described in the utility model, a limit piece is provided on the side wall of the second guide groove opposite to the first locking portion, and an anti-slip arm capable of passing through the second guide groove is provided on the side of the third locking portion, and the end of the anti-slip arm can be buckled to the limit piece in the direction of exiting the second guide groove.
[0016] As a preferred solution of the utility model, an anti-slip arm is provided on the side of the third locking part, and when the secondary locking part is connected to the connecting handle but not locked for the second time, an anti-slip arm that can pass through the second guide groove is provided, and the anti-slip arm and the third locking part pass through the second guide groove synchronously, so that the end of the anti-slip arm can abut or hook on the limiting part in the direction of exiting from the second guide groove, so that the secondary locking part in the locking mechanism can be temporarily installed on the connecting handle before the primary locking part is locked, and will not exit in the reverse direction due to the action of the anti-slip arm and the limiting part, thereby avoiding the risk of the secondary locking part falling off and enhancing the performance of the locking mechanism.
[0017] Preferably, in the locking mechanism for the MSD switch described in the present invention, the secondary locking member is provided with a pushing portion at one end away from the first abutting member, and the connecting handle is provided with a receiving groove for the pushing portion to be embedded.
[0018] As a preferred solution of the utility model, by providing a pushing portion on the secondary locking piece, the locking piece can be pushed into the first guide groove and the second guide groove of the connecting handle more labor-saving and conveniently. In the application scenarios of such connectors and other precision connecting instruments, the plug-in effect of the connector itself can be avoided due to force bias, which not only saves labor but also reduces adverse effects during use. By providing a receiving groove on the connecting handle, the pushing portion is embedded in the receiving groove. On the one hand, the secondary locking piece is judged to be pushed into place by the pushing portion being completely embedded in the receiving groove. On the other hand, the embedding of the receiving groove and the pushing portion can also limit the end of the secondary locking piece through interference fit with the help of the pushing portion, thereby avoiding slight movement of the secondary locking piece, thereby further ensuring the safety of the secondary locking; it can also avoid the pushing portion protruding from the connecting handle and being scratched or driven, thereby affecting the secondary locking, thereby further improving the locking effect of the locking mechanism.
[0019] In view of the problem that the connection of connectors in the prior art is not tight enough, the utility model provides a connector including the above-mentioned locking mechanism for MSD switches, including: a plug assembly and a socket assembly that can be plugged into each other; the shell includes a shell cover and a shell seat that can cover each other, and the shell cover and the shell seat are respectively connected to the plug assembly and the socket assembly; the shell seat is provided with a boss, and the boss extends in a direction perpendicular to the covering direction of the shell cover and the shell seat, and a first sealing ring is provided between the boss and the shell cover; a second sealing ring is provided between the shell cover and the outer wall of the shell seat.
[0020] The connector including the locking mechanism for the MSD switch described in the utility model is provided with a shell cover and a shell seat that can cover each other on the plug assembly and the socket assembly respectively. After the plug assembly and the socket assembly are plugged in, the plug assembly and the socket assembly of the connector can be connected by the covering of the shell cover and the shell seat, and the handle cooperates with the shell to lock the connection of the locking connector. On the basis of realizing the connection of the locking connector, a boss extending perpendicular to the covering direction is provided on the shell seat, so that after the shell cover is covered on the shell seat, the shell cover can be pressed against the table surface of the boss in cooperation with the locking of the locking mechanism, and the primary locking force of the locking mechanism can be received on the table surface of the boss, further enhancing the tightness of the connection of the connector, so that the locking of the locking mechanism and the connection of the connector are more matched; and the utility model can seal the shell cover and the shell seat on the boss by providing a first sealing ring on the boss, and the second sealing ring is provided at the end opposite to the first sealing ring, so that the second sealing ring is sealed between the outer wall of the shell seat and the inner wall of the shell cover, further enhancing the tightness of the connection between the connector plug and the socket, and improving the safety performance of the use of the connector.
[0021] Preferably, in the connector of the utility model including a locking mechanism for an MSD switch, the inner wall of the shell cover and the outer wall of the shell seat are respectively provided with a third guide groove and a guide ridge; the third guide groove and the guide ridge can slide relative to each other along the direction in which the shell cover and the shell seat are covered, and the third guide groove includes a plurality of guide ridges along the circumferential array of the shell, and the number of the guide ridges matches the number of the third guide grooves.
[0022] As a preferred solution of the utility model, a third guide groove and a guide rib are respectively provided on the inner wall of the shell cover and the outer wall of the shell seat, and the long side directions of the third guide groove and the guide rib are along the covering direction of the shell cover and the shell seat. In the process of relative sliding of the guide rib embedded in the third guide groove along the long side direction, the shell cover and the shell seat are covered and covered under the guiding action of the third guide groove and the guide rib, so that the shell cover and the shell seat are aligned during the covering process, and the plugging of the plug and the socket can have an alignment reference, thereby further improving the accuracy of the plugging and positioning of the connector, and further reducing the risk caused by plugging failure.
[0023] Preferably, the connector of the utility model including a locking mechanism for an MSD switch, the plug assembly includes: a first signal terminal, a pin insulator, and a pin assembly assembled in a shell cover; the socket assembly includes: a second signal terminal, a hole insulator, and a jack assembly assembled in the shell base; the second signal terminal is matched and plugged with the first signal terminal; the jack assembly is matched and plugged with the pin assembly; the pin assembly and the jack assembly are respectively integral stamped parts.
[0024] As a preferred solution of the present invention, by setting the connector as a connector with a signal connection including a first signal terminal and a second signal terminal, and including the locking mechanism described in the present invention, the signal connection will not be affected by the problem of loose locking, and signal transmission can be achieved, thereby improving the performance of the connector and enhancing the applicability of the connector. In addition, by setting the first signal terminal and the second signal terminal to match the plug-in connection, which just matches the covering mode of the shell cover and the shell seat, the plug-in mode of the connector's plug assembly and socket assembly is smoother and safer to use.
[0025] Preferably, the connector of the utility model includes a locking mechanism for an MSD switch, and the jack assembly includes: a metal connecting seat and two groups of first elastic contacts; the two groups of first elastic contacts are arranged opposite to each other and the bottom ends are fixed to the metal connecting seat to form a plug-in channel in the middle; two groups of second elastic contacts are respectively arranged on the outer sides of the two groups of first elastic contacts, and the lower parts of the second elastic contacts are fixedly connected to the lower parts of the first elastic contacts by fasteners.
[0026] As a preferred solution of the present invention, the metal connecting seat plays the role of connecting the socket assembly and being able to conduct electricity. A plug-in channel is formed in the middle of the two groups of first elastic contacts, and the plug-in channel is used for the plug-in of the pin assembly. When the pin assembly is plugged in, due to the elasticity of the first elastic contacts, the two groups of first elastic contacts are elastically deformed by the lateral extrusion force of the pin assembly, so that the two groups of first elastic contacts maintain contact with the pin assembly while realizing the plug-in of the pin assembly. By providing two groups of second elastic contacts, the plug-in and pull-out force of the pin assembly can be elastically buffered for a second time, and the connection tightness of the second elastic contact and the first elastic contact can be adjusted through the action of the fastener, which ensures that the socket assembly can be subjected to contact pressure, and also enhances the fatigue resistance of the pin assembly when plugged in and out at the wrong place, further enhancing the performance and service life of the connector.
[0027] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:
[0028] 1. The utility model realizes secondary locking by arranging the first abutting piece of the secondary locking piece so as to abut the first locking part against the second locking part through the first guide groove, and on this basis, by arranging the third locking part, the first protrusion part and the second protrusion part which can penetrate into the second guide groove, and the third locking part can be limited by the pushing action of the second protrusion part on the first protrusion part; when the primary locking is not completed, the first protrusion part will not contact the third protrusion part, so that the third locking part and the first abutting piece are synchronously limited by the second protrusion part, which can avoid the situation of secondary locking before the primary locking is completed, so that the secondary locking can be associated with the locking state of the primary locking, thereby reducing the risk of the locking mechanism not being locked, avoiding leakage, and improving the safety of use;
[0029] 2. When the primary locking is completed, the secondary locking member is pushed toward the first guide groove and the second guide groove to release the limit of the second protrusion, and then the third locking portion and the abutting root are fixedly connected, so that the secondary locking of the first abutting member and the third locking portion are synchronously locked in place, thereby ensuring that the secondary locking connection is tighter when the primary locking is completed, improving the tightness of the connector connection and improving the safety of use;
[0030] 3. When the connecting handle and the shell are not connected, the secondary locking piece can also be placed on the connecting handle. Through the limiting effect of the second protrusion, the first locking piece is simultaneously limited and will not be pressed against the first locking part. This not only facilitates use, but also reduces the disassembly friction of the secondary locking piece, reduces the deformation frequency, and thus reduces the risk of damage, thereby extending the service life of the locking mechanism. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1 It is an exploded view of the three-dimensional structure of the utility model;
[0032] Figure 2 It is the structural diagram a of the connecting handle described in the utility model;
[0033] Figure 3 This is the structural diagram b of the connecting handle described in the utility model;
[0034] Figure 4 It is a front view of the secondary locking member described in the utility model;
[0035] Figure 5 It is a back view of the secondary locking member described in the utility model;
[0036] Figure 6 It is a three-dimensional structural exploded diagram of the plug assembly described in the utility model;
[0037] Figure 7 It is a three-dimensional structural exploded diagram of the socket assembly described in the utility model;
[0038] Figure 8 It is a structural diagram of the jack assembly described in the utility model;
[0039] Fig. 9 It is a cross-sectional schematic diagram of the connector of the utility model in an unplugged state;
[0040] Fig.10 It is a cross-sectional schematic diagram of the connector of the utility model in an unlocked state;
[0041] Fig.11 It is a cross-sectional schematic diagram of the locking state of the connector described in the utility model;
[0042] Icons: 1-connection handle; 10-plug assembly; 101-first signal terminal; 102-pin insulator; 103-pin assembly; 11-first locking portion; 12-first guide groove; 13-second guide groove; 131-second protrusion; 132-limiting member; 14-accommodating groove; 2-secondary locking member; 20-socket assembly; 201-second signal terminal; 202-hole insulator; 203-socket assembly; 2031-metal connection seat; 2032-first elastic connection Contact piece; 2033-second elastic contact piece; 2034-fastener; 21-first abutting piece; 22-third locking portion; 221-first protruding portion; 23-second abutting piece; 24-anti-slip arm; 25-pushing portion; 3-shell; 31-second locking portion; 32-third protruding portion; 33-shell cover; 331-third guide groove; 332-second sealing ring; 333-positioning column; 34-shell seat; 341-boss; 342-first sealing ring; 343-guide ridge. DETAILED DESCRIPTION
[0043] The utility model is described in detail below in conjunction with the accompanying drawings.
[0044] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and do not limit the utility model.
[0045] Example 1
[0046] like Figure 1 As shown, the locking mechanism for the MSD switch of the utility model comprises: a connecting handle 1, a secondary locking member 2, a first locking portion 11 and a second locking portion 31 respectively arranged on the connecting handle 1 and the housing 3, the first locking portion 11 and the second locking portion 31 can be elastically matched and locked; the connecting handle 1 is provided with a first guide groove 12 and a second guide groove 13 respectively located on both sides of the first locking portion 11, the secondary locking member 2 is provided with a first abutting member 21 and a third locking portion 22 connected at the root, the first abutting member 21 can pass through the first guide groove 12, and then abut the first locking portion 11 against the second locking portion 31; the third locking portion 22 can The third locking portion 22 can be guided by the second guide groove 13 and then move synchronously with the first clamping member 21; the front end of the third locking portion 22 is provided with a first protrusion 221 protruding toward the shell body 3, the groove wall of the second guide groove 13 is provided with a second protrusion 131 protruding in the opposite direction to the first protrusion 221, and the outer wall of the shell body 3 is provided with a third protrusion 32 protruding in the same direction as the second protrusion 131; the third protrusion 32 is adjacent to one end of the second locking portion 31 for locking, the third protrusion 32 can be located on the side of the second protrusion 131, and the first protrusion 221 can push the first protrusion 221 and the second protrusion 131 respectively.
[0047] Reference usage method of this embodiment: Locking process: First, align the first abutting piece 21 and the third locking portion 22 of the secondary locking piece 2 with the first guide groove 12 and the second guide groove 13 respectively, and push the secondary locking piece 2 toward the connecting handle 1. Since the first protrusion 221 is acted upon by the second protrusion 131 on the connecting handle 1, the secondary locking piece 2 will not be fully pushed into the connecting handle 1, thereby preventing the secondary locking piece 2 from being fully locked; then, after the connector is plugged in, the connecting handle 1 and the secondary locking piece 2 are simultaneously pushed toward the housing 3, so that the first locking portion 11 and the second locking portion 12 are pressed against the connecting handle 1. The tightening portion 31 cooperates with the locking to complete the primary locking; finally, the secondary locking member 2 is pushed into the connecting handle 1 again, so that the first abutting member 21 abuts against the first locking portion 11, and the first protrusion 221 is pushed by the third protrusion 32 perpendicular to the direction of the housing 3, resulting in the first protrusion 221 being lifted to a height equivalent to or higher than the second protrusion 131, so that the first protrusion is released from the limitation of the second protrusion 131. At this time, the first abutting member 21 is locked synchronously with the primary locking of the first locking portion 11, and the secondary locking of the secondary locking member 2 is achieved.
[0048] Unlocking process: First, pull the secondary locking member 2 in the opposite direction to the pushing direction, so that the first protrusion 221 retreats to the position where it is not pushed by the third protrusion 32. Due to the reverse withdrawal of the secondary locking member 2, the first pressing member 21 releases the pressing effect on the first locking portion 11 or reduces the pressing force on the first locking portion 11; then, press the root of the first locking portion 11 perpendicular to the direction of the shell 3, and the elastic deformation of the first locking portion 11 causes the end of the first locking portion 11 that is locked with the second locking portion 31 to disengage from the second locking portion 31, thereby completing the unlocking.
[0049] It should be noted that the third protrusion 32 can be located on the side of the second protrusion 131. It is understood that when designing the shell 3 and the connecting handle 1, by setting the size of the connecting handle 1 that matches the shell 3, and by setting the distance between the third protrusion and the edge of the shell 3, and the position of the second protrusion 131 at the connecting handle 1, it can be achieved that when the connecting handle 1 is connected to the shell 3, the third protrusion 32 can be located on the side of the first protrusion 221; specifically, in this embodiment, the second protrusion 131 includes at least two protrusions that can be located on both sides of the third protrusion 32, such as Figures 1 to 3 As shown, when the secondary locking member 2 is pushed into the connecting handle 1 so that the first protrusion is located at the front end of the second protrusion, the first protrusion 221 is limited by the two second protrusions 131. When the connecting handle 1 is locked to the shell 3, the third protrusion 32 pushes and lifts the first protrusion 221 from the middle of the two second protrusions 131.
[0050] It should be noted that the elastic fit locking is understood as follows: the second locking portion 31 and the first locking portion 11 can be selected as locking arms and lock buckles for fit locking, respectively; the first locking portion 11 is provided with a groove to form a lock buckle; a protrusion with the same concave direction as the groove of the first locking portion 11 is provided at the end of the second locking portion 31; when the protrusion of the second locking portion 31 does not extend to the groove of the first locking portion 11, elastic deformation back to the protrusion occurs; when it extends into the groove of the first locking portion 11, the elastic deformation is restored to achieve elastic fit locking;
[0051] Specifically, the first locking portion 11 can also be set as a lock buckle, and the second locking portion 31 can be set as a locking arm, or the first locking portion 11 can be set as a locking arm, and the second locking portion 31 can be set as a lock buckle. The locking method of the locking arm and the lock buckle can be understood as follows: the front end of the locking arm is provided with a protrusion or hook that can be stuck in the lock buckle, and the locking arm elastically causes the protrusion or hook to be buckled on the inner edge of the lock buckle to achieve locking in the direction in which the two are separated from each other. Through this setting, the first clamping member 21 can be better coordinated to perform compression in a direction perpendicular to the direction in which the two are separated from each other, so that the coordination degree of the primary locking and the secondary locking is higher, thereby preventing the two from disengaging from each other. The effect is better.
[0052] It should be noted that the first retaining member 21 is pressed against the first elastic portion, which is understood as: the first retaining member 21 presses the first locking portion 11 against the second locking portion 31 in the opposite direction of the elastic deformation of the first locking portion 11; the opposite direction of the elastic deformation of the first locking portion 11 is understood as: the ends of the first locking portion 11 and the second locking portion 31 can be hooked and locked with each other by setting relative protrusions and grooves, and the direction of elastic deformation is perpendicular to the hooking direction, which is understood as perpendicular to the hooking direction of the first locking portion 11 and the second locking portion 31, refer to Fig. 9 and Fig.10 In the utility model, the elastic deformation direction of the first locking portion 11 can be understood as being approximately perpendicular to the shell 3, so that the first pressing member 21 is perpendicular to the hooking direction of the first locking portion 11 and is pressed against the first locking portion 11 on the second locking portion 31, thereby preventing the first locking portion 11 from being disengaged due to elastic deformation, and achieving the purpose of secondary locking.
[0053] In this embodiment, Figure 2 and Figure 3 As shown, the first abutting member 21 is configured as a cross bar, both ends of which are connected to the secondary locking member 2 by integral molding; the long side direction of the cross bar can be perpendicular to the extension direction of the first locking portion 11 .
[0054] In this embodiment, specifically, Figure 4 As shown, the second locking member 2 is provided with a second fastening member 23 at one end away from the first fastening member 21. The second fastening member 23 can be fastened to the side of the first locking portion 11 facing away from the first fastening member 21. Figure 3After the secondary locking piece 2 is inserted into the connecting handle 1 and is locked for the second time, the second locking piece 23 can be pressed against the root of the first locking portion 11 from the side of the first locking portion 11 facing away from the first locking piece 21. Before the secondary locking piece 2 is withdrawn from the connecting handle 1, the root of the first locking portion 11 cannot be pressed due to the action of the second locking piece 23, thereby further preventing the first locking portion 11 from elastic deformation and enhancing the locking effect.
[0055] In this embodiment, a limit piece 132 is provided on the side wall of the second guide groove 13 opposite to the first locking portion 11, and an anti-slip arm 24 capable of passing through the second guide groove 13 is provided on the side of the third locking portion 22, and the end of the anti-slip arm 24 can be buckled to the limit piece 132 in the direction of withdrawing from the second guide groove 13; it should be noted that the third locking portion 22 can be selected as an elastic locking arm, and the length of the third locking portion 22 is shorter than the length of the anti-slip arm 24.
[0056] Specifically, Figure 2 As shown, the limiting member 132 is designed to be a side wall end face flush with the end of the second protruding portion 131, so that the side wall of the second guide groove 13 opposite to the first locking portion 11 is hooked with the anti-slip arm 24. It should be noted that the end of the anti-slip arm 24 close to the limiting member 132 is provided with a protrusion protruding toward the limiting member 132. After the secondary locking member 2 withdraws from the second guide groove 13 and moves, the protrusion of the limiting member 132 can be hooked or abutted with the limiting member 132, thereby preventing the secondary locking member 2 from continuing to slip out of the second guide groove 13, thereby preventing the secondary locking member 2 from slipping out of the connecting handle 1.
[0057] In this embodiment, specifically, Figure 3 and Figure 4 The secondary locking member 2 is provided with a push portion 25 at one end away from the first locking member 21, and a receiving groove 14 for the push portion 25 to be embedded is provided at one side of the connecting handle 1 away from the first locking member 11. The thickness of the push portion 25 is greater than the thickness of the other end of the secondary locking member 2, so that the cross-sectional area of the push portion 25 is greater than the other end of the secondary locking member 2, so that the pressure of the reverse force when pushing the push portion 25 is reduced, which can save effort and does not hurt the hand, and improves the convenience of use.
[0058] The locking mechanism described in this embodiment has the following advantages over the traditional connector locking mechanism: First, high reliability: after the primary locking and the secondary locking are locked at the same time, the plug and the socket of the connector will not be separated due to misoperation, thereby avoiding the occurrence of faults and ensuring the locking reliability of the plug and the socket. In addition, by arranging the first protrusion 221, the second protrusion 131 and the third protrusion 32 in the middle, a delay lock is formed, so that the plug and the socket of the connector will not be separated suddenly, preventing the arc from causing damage, and safely and effectively ensuring the stability of the high-voltage system; Second, easy operation: only two actions are needed for the primary locking and the secondary locking, and only three actions are needed for unlocking, which is very efficient and simple to operate; Third, in terms of protection performance, the interlocking function of the housing 3, the connecting handle 1 and the secondary locking member 2 of the utility model has a strong locking force, which can effectively protect the electrical connection integrity of the high-voltage system circuit; Fourth, low cost: the secondary locking member 2 can be integrally formed, and the connecting handle 1 can also be integrally formed, reducing the number of parts, thereby saving production and assembly time and reducing costs.
[0059] Example 2
[0060] On the basis of Example 1, the utility model discloses a connector including a locking mechanism for an MSD switch, comprising: a plug assembly 10 and a socket assembly 20 that are plugged into each other; the shell 3 comprises a shell cover 33 and a shell seat 34 that can cover each other, and the shell cover 33 and the shell seat 34 are respectively arranged on the plug assembly 10 and the socket assembly 20; the shell seat 34 is provided with a boss 341 extending perpendicular to the covering direction of the shell cover 33 and the shell seat 34; the boss 341 is provided with a first sealing ring 342 that can be sealed between the shell cover 33 and the boss 341; the shell cover 33 is provided with a second sealing ring 332 that can be sealed with the outer wall of the shell seat 34.
[0061] Specifically, in this embodiment, Figure 6 and Figure 7 As shown, the inner wall of the shell cover 33 and the outer wall of the shell seat 34 are respectively provided with a third guide groove 331 and a guide rib 343; the third guide groove 331 and the guide rib 343 can slide relatively along the covering direction of the shell cover 33 and the shell seat 34, and the third guide groove 331 includes a plurality of guide ribs 343 arranged along the circumferential direction of the shell 3, and the number of the third guide grooves 331 matches the number of the third guide grooves 331.
[0062] Specifically, Figure 6 and Figure 7As shown, the plug assembly 10 includes: a first signal terminal 101, a pin insulator 102, and a pin assembly 103 assembled in the shell cover 33; the socket assembly 20 includes: a second signal terminal 201, a hole insulator 202, and a jack assembly 203 assembled in the shell base 34 at the end of the socket assembly 20; the second signal terminal 201 is matched and plugged with the first signal terminal 101; the hole insulator 202 is used to match and fix the jack assembly 203, and the pin insulator 102 is used to match and fix the pin assembly 103; the jack assembly 203 is matched and plugged with the pin assembly 103, specifically, the pin insulator 102 is clamped in the shell cover 33 through the elastic deformation of the buckle, which plays the role of fixing the sealing ring, and the first signal terminal 101 is assembled in the limit position of the pin insulator 102 through interference fit.
[0063] It should be noted that the “assembly” is understood to mean that the various components of the above-mentioned socket assembly 20 and plug assembly 10 can be connected and fixed in the housing 3 according to position and sequence through the action of bolts and mutual plugging.
[0064] In this embodiment, the pin assembly 103 and the socket assembly 203 play a conductive role after being plugged in, realizing the function of large current conduction; the first signal terminal 101 and the second signal terminal 201 play a conductive role after being plugged in, realizing the function of small current signal conduction.
[0065] It should be noted that, as shown in the figure, the pin in the pin assembly 103 is a professional component term in the connector field, which is understood as a plug-in that can be matched with the jack assembly 203, and should not be understood as a single needle-shaped object. In this embodiment, the integral stamping part is understood as the pin assembly 103 and the jack assembly 203 are both integrally stamped, which meets the product performance and reduces the cost compared with the traditional machined parts.
[0066] In combination with Example 1, the connector locking mechanism described in the utility model can fix the pin assembly 103 and realize the plug-in connection between the plug assembly 10 and the socket assembly 20. It is also the main body that carries other plug parts, ensuring sufficient electrical clearance and creepage distance.
[0067] In this embodiment, specifically, Figure 8 As shown, the jack assembly 203 includes: a metal connecting seat 2031 and two groups of first elastic contact pieces 2032; the two groups of first elastic contact pieces 2032 are arranged opposite to each other and the bottom ends are fixed to the metal connecting seat 2031, so that a plug-in channel is formed in the middle; two groups of second elastic contact pieces 2033 are respectively arranged on the outer sides of the two groups of first elastic contact pieces 2032, and the lower part of the second elastic contact piece 2033 is fixedly connected to the lower part of the first elastic contact piece 2032 by a fastener 2034.
[0068] Specifically, the metal connecting seat 2031 can be selected from a copper sheet, the fastener 2034 can be selected from a flat solid rivet, the first elastic contact piece 2032 can be selected from an elastic metal sheet, such as a contact spring sheet, and the second elastic contact piece 2033 can be selected from an elastic metal sheet. The thickness of the second elastic contact piece 2033 can be thinner than the thickness of the first elastic contact piece 2032, such as a stainless steel spring sheet, thereby increasing the elasticity of the jack assembly 203, ensuring the contact pressure between the pin assembly 103 and the jack assembly 203, and enhancing the fatigue resistance of the pin after multiple insertion and removal.
[0069] like Fig. 9 As shown, the plug assembly 10 and the socket assembly 20 are not plugged in, and the connection handle 1 is placed perpendicular to the plugging direction of the connector before the connector is assembled. After the connector is plugged in, by rotating the connection handle 1, the pushing direction of the secondary locking member 2 can be directed toward the plugging direction of the connector, as shown in FIG. Fig.10 As shown, by pushing the secondary locking member 2, the following can be achieved: Fig.11 Locked state shown.
[0070] In this embodiment, the shell seat 34 is precisely positioned by a mold using bolts and nuts, and can be integrally injection molded with the shell seat 34, which has the advantages of improving production efficiency, stabilizing quality, and reducing production costs; the end of the connector with the signal line needs to be crimped with the second signal terminal 201, and then fixed to the protective cover of the second signal terminal 201 by a buckle, and the signal protective cover is fixed to the shell seat 34 by a buckle; wherein, the stainless steel spring sheet, the contact spring sheet, and the metal connecting seat 2031 are formed by connecting with solid rivets, and the solid rivet connection has the advantages of simple assembly, high strength, safety and reliability; the assembled jack assembly 203 is fixed to the shell seat 34 by bolts, and the hole insulator 202 is fixed to the shell seat 34 by a buckle, thereby protecting the jack assembly 203 from falling off; the first sealing ring 342 is installed in the groove set by the boss 341, and is fixed to the shell seat 34 by an interference convex point.
[0071] The pin insulator 102 can be fixed to the plug shell cover 33 by snapping, axially limiting the second sealing ring 332, and at the same time fixing the first signal terminal 101; the shell seat 34 includes a contact structure, claws, grooves and other structures, and its main function is to fix the jack assembly 203, realize the installation and fixation of the socket assembly 20, and can be locked with the plug assembly 10. It is also the main body of the part that "carries" the socket assembly 20 and ensures sufficient electrical clearance and creepage distance.
[0072] The hole insulator 202 is fixed to the shell base 34 by means of a buckle and interference fit, and its main function is to connect the jack assembly 203 to prevent the jack assembly 203 from falling off, while ensuring sufficient electrical clearance and creepage distance between the first signal terminal 101 and the second signal terminal 201.
[0073] In this embodiment, the pin assembly 103 is an integrated stamping part, and the pin assembly 103 is connected to the shell cover 33 by using self-tapping screws. The second sealing ring 332 is fixed to the shell cover 33 by radial interference and axial limitation; the pin insulator 102 is clamped on the shell cover 33 by elastic deformation of the buckle, which plays a role in fixing the second sealing ring 332; the first signal terminal 101 can be assembled in the limited position of the pin insulator 102 by interference fit; the connecting handle 1 is assembled on the positioning column 333 of the shell 3 by elastic deformation; the secondary locking member 2 is assembled to the connecting handle 1 shell 3, and the whole can be covered on the first locking portion 11 of the connecting handle 1 to achieve a secondary enhanced locking effect.
[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A locking mechanism for an MSD switch, comprising: A connecting handle (1), a secondary locking member (2), a first locking portion (11) provided on the connecting handle (1), and a second locking portion (31) provided on the housing (3), wherein the first locking portion (11) and the second locking portion (31) can be elastically matched and locked; The invention is characterized in that: the connecting handle (1) is provided with a first guide groove (12) and a second guide groove (13) respectively located on both sides of the first locking portion (11); the secondary locking member (2) is provided with a first abutting member (21) and a third locking portion (22) connected at the root; the first abutting member (21) can pass through the first guide groove (12) to abut the first locking portion (11) against the second locking portion (31); the third locking portion (22) can be guided by the second guide groove (13) to move synchronously with the first abutting member (21); The front end of the third locking portion (22) is provided with a first protruding portion (221) protruding toward the shell (3); the groove wall of the second guide groove (13) is provided with a second protruding portion (131) protruding in the opposite direction to the first protruding portion (221); the outer wall of the shell (3) is provided with a third protruding portion (32) protruding in the same direction as the second protruding portion (131); the third protruding portion (32) is adjacent to an end of the second locking portion (31) for locking, the third protruding portion (32) can be located on the side of the second protruding portion (131), and the first protruding portion (221) can push against the second protruding portion (131) and the third protruding portion (32) respectively.
2. The locking mechanism for an MSD switch according to claim 1, characterized in that: The second protrusions (131) include: at least two protrusions that can be located on both sides of the third protrusion (32).
3. The locking mechanism for an MSD switch according to claim 1, characterized in that: The first fastening member (21) is configured as a cross bar, and both ends of the cross bar are connected to the secondary locking member (2) by integral molding; the long side direction of the cross bar can be perpendicular to the extension direction of the first locking portion (11).
4. The locking mechanism for an MSD switch according to claim 1, characterized in that: A second pressing member (23) is provided at one end of the secondary locking member (2) away from the first pressing member (21), and the second pressing member (23) can be pressed against a side of the first locking portion (11) facing away from the first pressing member (21).
5. The locking mechanism for an MSD switch according to claim 1, characterized in that: A limiting piece (132) is provided on the side wall of the second guide groove (13) opposite to the first locking portion (11), and an anti-slip arm (24) capable of passing through the second guide groove (13) is provided on the side of the third locking portion (22), and the end of the anti-slip arm (24) can be buckled with the limiting piece (132) in the direction of withdrawing from the second guide groove (13).
6. The locking mechanism for an MSD switch according to claim 1, characterized in that: The secondary locking member (2) is provided with a pushing portion (25) at one end away from the first pressing member (21), and the connecting handle (1) is provided with a receiving groove (14) for the pushing portion (25) to be embedded.
7. A connector comprising a locking mechanism for an MSD switch according to any one of claims 1 to 6, characterized in that: include: A plug assembly (10) and a socket assembly (20) that can be plugged into each other; The shell (3) comprises: a shell cover (33) and a shell seat (34) that can cover each other, the shell cover (33) and the shell seat (34) are respectively connected to the plug assembly (10) and the socket assembly (20); the shell seat (34) is provided with a boss (341), the boss (341) extends in a direction perpendicular to the covering direction of the shell cover (33) and the shell seat (34), and a first sealing ring (342) is provided between the boss (341) and the shell cover (33); and a second sealing ring (332) is provided between the shell cover (33) and the outer wall of the shell seat (34).
8. The connector comprising a locking mechanism for an MSD switch according to claim 7, characterized in that: The inner wall of the shell cover (33) and the outer wall of the shell seat (34) are respectively provided with a third guide groove (331) and a guide ridge (343); the third guide groove (331) and the guide ridge (343) are capable of relatively sliding along the direction in which the shell cover (33) and the shell seat (34) are covered; the third guide groove (331) includes a plurality of third guide grooves (331) arranged in a circumferential array along the shell (3); the number of the guide ridges (343) matches the number of the third guide grooves (331).
9. The connector comprising a locking mechanism for an MSD switch according to claim 7, characterized in that: The plug assembly (10) comprises: a first signal terminal (101), a pin insulator (102), and a pin assembly (103) assembled in the shell cover (33); the socket assembly (20) comprises: a second signal terminal (201), a hole insulator (202), and a jack assembly (203) assembled in the shell base (34); the second signal terminal (201) is mated and plugged with the first signal terminal (101); the jack assembly (203) is mated and plugged with the pin assembly (103); the pin assembly (103) and the jack assembly (203) are respectively integrally stamped parts.
10. The connector comprising a locking mechanism for an MSD switch according to claim 9, characterized in that: The jack assembly (203) comprises: a metal connection seat (2031) and two groups of first elastic contact pieces (2032); the two groups of the first elastic contact pieces (2032) are arranged opposite to each other, and the bottom ends are fixed to the metal connection seat (2031) so as to form a plug-in channel in the middle; the outer sides of the two groups of the first elastic contact pieces (2032) are respectively provided with second elastic contact pieces (2033), and the lower part of the second elastic contact piece (2033) is fixedly connected to the lower part of the first elastic contact piece (2032) via a fastener (2034).