Inspection plug connector and battery inspection device

Abstract

The utility model discloses a polling plug connector and battery polling device, relates to fuel cell technical field, the polling plug connector comprises a plug connector body and a clamping mechanism, the bottom of the plug connector body is provided with a slot for the pole piece to insert, the plug connector body is provided with a first outer side wall and a second outer side wall which are opposite to each other, the first outer side wall and the second outer side wall are respectively provided with a limiting groove communicated with the slot, the clamping part of the pole piece is arranged in the limiting groove after the pole piece is inserted into the slot, the first outer side wall and the second outer side wall are respectively provided with a clamping mechanism, the clamping mechanism comprises a pressing block and an elastic piece, the pressing block is provided with a limiting part, and the elastic piece is arranged in the limiting groove. The pressing block is connected with the plugging main body through the elastic piece so that the limiting part is clamped in the limiting groove and is clamped with the clamping part of the pole piece, and the elastic piece is extruded by the pressing block when the pressing block is subjected to external force so that the limiting part is separated from the clamping part. By arranging the double clamping mechanisms, the connection stability of the inspection plug connector and the pole piece can be improved, and loosening or falling off is avoided.

Description

Technical Field

[0001] This utility model relates to the field of fuel cell technology, and in particular to an inspection connector and a battery inspection device. Background Technology

[0002] Existing inspection devices for fuel cell electrode plates have certain shortcomings in the design of the clips that engage the inspection connectors with the electrode plates, resulting in an unreliable connection. During inspection, the unstable contact between the clips and the electrode plates can easily lead to loosening or detachment, thus affecting the normal operation and inspection accuracy of the device. Utility Model Content

[0003] The main purpose of this utility model is to propose an inspection connector and a battery inspection device, which aims to solve the problem of unreliable connection of existing inspection connectors.

[0004] To achieve the above objectives, the present invention proposes an inspection connector for connecting a battery device and a testing device. The battery device has electrodes, and the electrodes are provided with snap-fit ​​portions. The inspection connector includes:

[0005] The plug-in body has a slot at its bottom for inserting the electrode plate. The plug-in body has a first outer side wall and a second outer side wall, and the first outer side wall and the second outer side wall are respectively provided with limiting grooves that communicate with the slot. The snap-fit ​​part is provided in the limiting groove.

[0006] The clamping mechanism is provided on both the first and second outer side walls. The clamping mechanism includes a pressing block and an elastic element. The pressing block is provided with a limiting part. The pressing block is connected to the insertion body through the elastic element. The pressing block is movably disposed on the insertion body so that the pressing block has a first state and a second state.

[0007] In the first state, the elastic element applies a force to the pressing block, and the limiting part is disposed in the limiting groove and engages with the locking part;

[0008] In the second state, the pressing block squeezes the elastic member under the action of external force, and the limiting part separates from the locking part.

[0009] In one embodiment, a through hole is provided on the wall of the limiting groove. The through hole communicates with the limiting groove and the slot, and the through hole is used to allow the snap-fit ​​portion of the electrode to enter the limiting groove.

[0010] In one embodiment, the electrode extends along a first direction, and there are multiple electrode sheets arranged at intervals along a second direction. The plug-in body is provided with multiple slots, each slot extending along the first direction. The multiple slots are arranged at intervals along the second direction on the plug-in body. The limiting groove is provided with multiple through holes, and the multiple through holes are connected to the multiple slots one by one. The first direction and the second direction form an angle.

[0011] In one embodiment, the limiting groove extends along the second direction, and the through hole is provided on the groove wall of the limiting groove along the third direction and communicates with the slot;

[0012] And / or, the opening of the limiting groove is opened in the first direction.

[0013] In one embodiment, the locking part is a locking groove provided on the electrode sheet, the groove opening of the locking groove and the groove opening of the limiting groove are arranged on the same side, and the locking groove is used for the limiting part to lock in.

[0014] In one embodiment, the inspection connector further includes a probe, and the top of the connector body is provided with a mounting groove communicating with the slot. The probe is inserted into the mounting groove for connection with the electrode.

[0015] In one embodiment, a wire is provided at the end of the probe away from the slot, and a wiring groove communicating with the mounting slot is provided on the top of the plug body. The end of the wiring groove away from the mounting slot is located on the outer side wall of the plug body, and the wire is at least partially located in the wiring groove.

[0016] In one embodiment, the inspection connector further includes a pressure cap disposed on the top of the connector body; a wire pressing part is provided on the side of the pressure cap near the wiring groove, and the wire pressing part extends along the length direction of the wiring groove to limit and abut the wire in the wiring groove.

[0017] And / or, the pressure cap is provided with a top block, which is inserted into the mounting groove for contact with the probe.

[0018] In one embodiment, the clamping mechanism further includes a rotating shaft, the elastic element includes a torsion spring, the rotating shaft is disposed on the insertion body, the pressing block is rotatably connected to the rotating shaft, and the torsion spring is sleeved on the rotating shaft and abuts against the insertion body and the pressing block respectively.

[0019] This utility model also proposes a battery inspection device, including the inspection connector in any of the foregoing embodiments.

[0020] The technical solution of this utility model improves the connection stability of the inspection connector by using a double clamping mechanism to hold the electrode. Specifically, the inspection connector includes an insertion body and a clamping mechanism. The bottom of the insertion body is provided with a slot for inserting the electrode. The insertion body has a first outer side wall and a second outer side wall with opposite sides. The first outer side wall and the second outer side wall are respectively provided with limiting grooves communicating with the slot. After the electrode is inserted into the slot, its locking part is located in the limiting groove. The first outer side wall and the second outer side wall are both provided with clamping mechanisms. The clamping mechanism includes a pressing block and an elastic element. The pressing block is provided with a limiting part. The pressing block is connected to the insertion body through the elastic element. The pressing block is movably disposed on the insertion body and has a first state and a second state. In the first state, the elastic element applies a force to the pressing block so that the limiting part is embedded in the limiting groove and locks with the locking part of the electrode. In the second state, the pressing block is subjected to an external force to squeeze the elastic element, and the limiting part separates from the locking part, which facilitates the separation of the inspection connector from the electrode. Understandably, by setting up a dual clamping mechanism, the connection stability between the inspection connector and the electrode can be improved, preventing loosening or detachment. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 A schematic diagram of a structure of an embodiment of the inspection connector provided by this utility model;

[0023] Figure 2 A schematic diagram showing the disassembled structure of an embodiment of the inspection connector provided by this utility model;

[0024] Figure 3 A schematic diagram of the structure of the plug-in body in one embodiment of the inspection plug-in provided by this utility model;

[0025] Figure 4 A schematic diagram of the assembly structure of the pressure cap, probe and wire in one embodiment of the inspection connector provided by this utility model;

[0026] Figure 5 A schematic diagram of another embodiment of the inspection connector provided by this utility model.

[0027] Explanation of icon numbers:

[0028] 100. Inspection connector; 110. Connector body; 110a. Slot; 110b. Limiting slot; 110c. Through hole; 110d. Mounting slot; 110e. Wiring channel; 120. Clamping mechanism; 121. Pressing block; 1211. Limiting part; 122. Elastic element; 1221. Torsion spring; 123. Rotating shaft; 130. Probe; 140. Wire; 150. Cover; 151. Wire clamping part; 152. Top block;

[0029] 200, Electrode; 210, Connecting part.

[0030] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0032] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] This utility model proposes an inspection connector 100.

[0035] Please see Figures 1 to 3In one embodiment of this utility model, the inspection connector 100 includes a connector body 110 and a clamping mechanism 120. The bottom of the connector body 110 is provided with a slot 110a for inserting the electrode 200. The connector body 110 has a first outer side wall and a second outer side wall. The first outer side wall and the second outer side wall are respectively provided with a limiting groove 110b communicating with the slot 110a. After the electrode 200 is inserted into the slot 110a, its locking part 210 is provided in the limiting groove 110b. The first outer side wall and the second outer side wall are both provided with a clamping mechanism 120. The clamping mechanism 120 includes a pressing block 121 and an elastic member 122. The pressing block 121 is provided with a limiting part 1211. The pressing block 121 is connected to the connector body 110 through the elastic member 122. The pressing block 121 is movably disposed on the connector body 110 and has a first state and a second state.

[0036] In the first state, the pressing block 121 is not subjected to external force, and the elastic element 122 applies an elastic force to the pressing block 121, so that the limiting part 1211 is embedded in the limiting groove 110b and engages with the locking part 210 of the electrode 200, preventing the inspection connector 100 from separating from the electrode 200. In the second state, the pressing block 121 is subjected to external force that compresses the elastic element 122, causing the elastic element 122 to undergo elastic deformation and the limiting part 1211 to separate from the locking part 210, making it easier to pull the inspection connector 100 out of the electrode 200. It can be understood that by setting the double clamping mechanism 120, the connection stability between the inspection connector 100 and the electrode 200 can be improved, preventing loosening or detachment.

[0037] In one embodiment, a through hole 110c is also provided on the groove wall of the limiting groove 110b. The through hole 110c communicates with the limiting groove 110b and the slot 110a. The through hole 110c is used to allow the snap-fit ​​portion 210 of the electrode 200 to enter the limiting groove 110b.

[0038] like Figure 2 and Figure 3 As shown, in one embodiment of this utility model, a through hole 110c is also provided on the groove wall of the limiting groove 110b. Specifically, the through hole 110c is connected to the limiting groove 110b and the slot 110a. When the electrode 200 is inserted into the slot 110a, the snap-fit ​​part 210 of the electrode 200 enters the limiting groove 110b through the hole 110c. At this time, if the clamping mechanism 120 is in the first state, the limiting part 1211 of the pressing block 121 abuts against the limiting groove 110b under the action of the elastic member 122. The electrode 200 is snapped into the limiting part 1211 through the hole 110c, preventing the inspection connector 100 from separating from the electrode 200 and ensuring the tightness of the connection.

[0039] In one embodiment, the electrode 200 extends along a first direction, and there are multiple electrode 200s arranged at intervals along a second direction. The insertion body 110 is provided with multiple slots 110a, each slot 110a extending along the first direction. The multiple slots 110a are arranged at intervals along the second direction on the insertion body 110. The limiting groove 110b is provided with multiple through holes 110c, and the multiple through holes 110c are connected to the multiple slots 110a one by one. The first direction and the second direction form an angle.

[0040] like Figures 1 to 3 As shown, in one embodiment of this utility model, the length direction of the electrode 200 extends along the first direction, and the number of electrode 200 is multiple and they are arranged at intervals along the second direction. The first direction and the second direction are perpendicular to each other. The bottom of the insertion body 110 is provided with multiple slots 110a. Each slot 110a extends along the first direction, and the multiple slots 110a are arranged at intervals along the second direction. The limiting groove 110b is provided with multiple through holes 110c. The multiple through holes 110c are respectively connected to the multiple slots 110a in the limiting groove 110b.

[0041] When the control inspection connector 100 is inserted into the electrode 200, the clamping mechanism 120 located on opposite sides of the connector body 110 can be pressed first, so that the pressing block 121 squeezes the elastic member 122 and the limiting part 1211 is at least partially disengaged from the limiting groove 110b. The electrode 200 is then inserted into the slot 110a and passes through the through hole 110c, so that the snap-fit ​​part 210 is located in the limiting groove 110b. At this time, the force applied to the pressing block 121 is released, and the elastic member 122 rebounds, causing the limiting part 1211 of the pressing block 121 to embed into the limiting groove 110b and snap-fit ​​with the snap-fit ​​part 210.

[0042] When separation is required, press the two clamping mechanisms 120 and drive the insertion body 110 to disengage from the electrode 200. It should be noted that in some other embodiments of this utility model, the first direction and the second direction form an angle, the value of which can be 90°, or other values ​​such as 60°, 75°, etc., and is not specifically limited.

[0043] In one embodiment, the limiting groove 110b extends along the second direction, and the through hole 110c is provided on the groove wall of the limiting groove 110b along the third direction and communicates with the slot 110a.

[0044] And / or, the opening of the limiting groove 110b is opened in the first direction.

[0045] like Figure 2 and Figure 3As shown, in one embodiment of this utility model, the limiting groove 110b extends along the second direction and penetrates the two opposite outer side walls of the insertion body 110 in the second direction. The through hole 110c extends along the third direction on the groove wall of the limiting groove 110b. When the electrode 200 is inserted, the snap-fit ​​parts 210 of multiple electrode 200 enter the limiting groove 110b through the through hole 110c along the third direction. The limiting part 1211 of the pressing block 121 also extends along the second direction. When the limiting part 1211 is provided in the limiting groove 110b, it can snap-fit ​​with the snap-fit ​​parts 210 of multiple electrode 200 at the same time, which can further improve the tightness of the connection.

[0046] And / or, the opening of the limiting groove 110b is set facing the first direction, and the end of the pressing block 121 near the limiting groove 110b is bent and extends along the first direction to form a limiting part 1211. The openings of the two limiting grooves 110b are set facing opposite directions. In the first state, the limiting parts 1211 of the two pressing blocks 121 approach each other to clamp the snap-fit ​​part 210 of the electrode 200. In the second state, the limiting parts 1211 of the two pressing blocks 121 move away from each other to release the electrode 200. It can be understood that the orientation of the opening of the limiting groove 110b is perpendicular to the insertion direction of the electrode 200, which facilitates personnel to operate and inspect the insertion and separation of the connector 100 and the electrode 200.

[0047] In one embodiment, the locking part 210 is a locking groove provided on the electrode 200, and the groove opening of the locking groove and the groove opening of the limiting groove 110b are provided on the same side. The locking groove is used for the limiting part 1211 to lock in.

[0048] like Figure 1 As shown, in one embodiment of this utility model, the snap-fit ​​part 210 is a snap-fit ​​groove provided on the electrode 200. Specifically, the opening of the snap-fit ​​groove and the opening of the limiting groove 110b are arranged in the same direction, that is, the openings of the snap-fit ​​groove and the limiting groove 110b are both opened along the first direction, so that the shape of the snap-fit ​​groove matches the shape of the inner wall of the limiting groove 110b. When the limiting part 1211 of the pressing block 121 snaps into the limiting groove 110b, the limiting part 1211 of the pressing block 121 hooks the inner side of the snap-fit ​​groove of the electrode 200, which can effectively prevent the inspection connector 100 from dislodging from the electrode 200 and improve the connection stability. Of course, in some other embodiments of this utility model, the snap-fit ​​part 210 can be set as a hook, buckle, lock hole, etc., as long as the connection is stable in the first state, and no specific limitation is made here.

[0049] In one embodiment, the inspection connector 100 further includes a probe 130, and the top of the connector body 110 is provided with a mounting groove 110d communicating with the slot 110a. The probe 130 is inserted into the mounting groove 110d for connection with the electrode 200.

[0050] like Figure 2 and Figure 4 As shown, in one embodiment of the present invention, the inspection connector 100 further includes a probe 130. Specifically, the top of the connector body 110 away from the slot 110a is also provided with a mounting groove 110d along a third direction. The mounting groove 110d communicates with the slot 110a. When the probe 130 is inserted into the mounting groove 110d, it can contact the electrode 200 in the slot 110a for testing the electrode 200.

[0051] In one embodiment, a wire 140 is provided at the end of the probe 130 away from the slot 110a, and a wiring groove 110e communicating with the mounting slot 110d is provided at the top of the plug-in body 110. The end of the wiring groove 110e away from the mounting slot 110d is located on the outer side wall of the plug-in body 110, and the wire 140 is at least partially located in the wiring groove 110e.

[0052] like Figure 2 and Figure 4 As shown, in one embodiment of this utility model, a wire 140 is provided at the end of the probe 130 away from the slot 110a. Specifically, the wire 140 is used to connect with an external detection device to realize signal transmission. A wiring groove 110e is provided on the top of the plug-in body 110 away from the slot 110a. One end of the wiring groove 110e is connected to the mounting groove 110d, and the other end of the wiring groove 110e is connected to one of the outer side walls of the plug-in body 110, so that the wiring groove 110e is arranged along a first direction or a second direction. The wire 140 is at least partially embedded in the wiring groove 110e. The end of the wire 140 away from the probe 130 extends out of the plug-in body 110 from the first direction or the second direction. Compared with the wire 140 extending out of the plug-in body 110 along a third direction, the internal space of the inspector can be saved.

[0053] In one embodiment, the inspection connector 100 further includes a pressure cap 150 disposed on the top of the connector body 110; a wire pressing part 151 is provided on the side of the pressure cap 150 near the wiring groove 110e, and the wire pressing part 151 extends along the length direction of the wiring groove 110e to limit the wire 140 to abut against the wiring groove 110e.

[0054] And / or, the pressure cap 150 is provided with a top block 152, which is inserted into the mounting groove 110d for contacting the probe 130.

[0055] like Figure 2 and Figure 4As shown, in one embodiment of the present invention, the inspection connector 100 further includes a pressure cover 150. Specifically, the pressure cover 150 is disposed on the top of the connector body 110. A wire pressing part 151 is provided on the side of the pressure cover 150 near the wiring groove 110e. The wire pressing part 151 extends along the first direction. When the pressure cover 150 is installed on the top of the connector body 110, the wire pressing part 151 can confine at least a portion of the wire 140 within the wiring groove 110e, so that the wires of the wire 140 are neatly arranged.

[0056] And / or, a top block 152 is also provided on the side of the pressure cap 150 facing the mounting groove 110d. The top block 152 extends along a third direction to push the probe 130 into a preset position in the mounting groove 110d so that the end of the probe 130 makes stable contact with the electrode 200. Furthermore, a plurality of mounting grooves 110d are arranged at intervals along a second direction, and a plurality of top blocks 152 are provided on the pressure cap 150 along the second direction. The plurality of top blocks 152 are arranged one-to-one with the plurality of mounting grooves 110d to press a plurality of probes 130 connected with wires 140 into the mounting grooves 110d, so as to realize the rapid assembly of the inspection connector 100.

[0057] In one embodiment, the clamping mechanism 120 further includes a rotating shaft 123, and the elastic element 122 includes a torsion spring 1221. The rotating shaft 123 is disposed on the insertion body 110, and the pressing block 121 is rotatably connected to the rotating shaft 123. The torsion spring 1221 is sleeved on the rotating shaft 123 and abuts against the insertion body 110 and the pressing block 121 respectively.

[0058] like Figure 2 As shown, in one embodiment of this utility model, the clamping mechanism 120 further includes a rotating shaft 123, and the elastic element 122 includes a torsion spring 1221. The rotating shaft 123 is disposed on the first outer side wall and the second outer side wall of the insertion body 110. The pressing block 121 is rotatably connected to the rotating shaft 123. The torsion spring 1221 is sleeved on the rotating shaft 123 and abuts against the outer side wall of the insertion body 110 and the inner side wall of the pressing block 121 to apply an elastic force to the pressing block 121 and make the pressing block 121 snap into the limiting groove 110b in the first state. In some other embodiments of this utility model, the clamping mechanism 120 can also connect the insertion body 110 and the pressing block 121 through components such as leaf springs and tension springs, so as to realize that the pressing block 121 is movably disposed on the insertion body 110 and has a first state and a second state. The specific choice can be made according to actual needs.

[0059] This utility model also proposes a battery inspection device, which includes an inspection connector 100. The specific structure of the inspection connector 100 is as described in the above embodiments. Since this battery inspection device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here. For example, Figure 5 As shown, the battery inspection device includes multiple inspection connectors 100 and multiple sets of electrode plates 200. The multiple inspection connectors 100 can be inserted sequentially along the arrangement direction of the electrode plates 200.

[0060] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. An inspection plug for connecting a battery device to a detection device, characterized in that, The battery device has electrodes, and the electrodes are provided with snap-fit ​​portions. The inspection connector includes: The plug-in body has a slot at its bottom for inserting the electrode plate. The plug-in body has a first outer side wall and a second outer side wall, and the first outer side wall and the second outer side wall are respectively provided with limiting grooves that communicate with the slot. The snap-fit ​​part is provided in the limiting groove. The clamping mechanism is provided on both the first and second outer side walls. The clamping mechanism includes a pressing block and an elastic element. The pressing block is provided with a limiting part. The pressing block is connected to the insertion body through the elastic element. The pressing block is movably disposed on the insertion body so that the pressing block has a first state and a second state. In the first state, the elastic element applies a force to the pressing block, and the limiting part is disposed in the limiting groove and engages with the locking part; In the second state, the pressing block squeezes the elastic member under the action of external force, and the limiting part separates from the locking part.

2. The patrol plug of claim 1, wherein, The wall of the limiting groove is also provided with a through hole, which is connected to the limiting groove and the slot. The through hole is used to allow the snap-fit ​​part of the electrode to enter the limiting groove.

3. The patrol plug of claim 2, wherein, The electrode extends along a first direction, and there are multiple electrode sheets arranged at intervals along a second direction. The insertion body is provided with multiple slots, each of which extends along the first direction. The multiple slots are arranged at intervals along the second direction on the insertion body. The limiting groove is provided with multiple through holes, and the multiple through holes are connected to the multiple slots one by one. The first direction and the second direction form an angle.

4. The patrol plug of claim 3, wherein, The limiting groove extends along the second direction, and the through hole is provided on the groove wall of the limiting groove along the third direction and communicates with the slot. And / or, the opening of the limiting groove is opened in the first direction.

5. The patrol plug of any one of claims 1 to 4, wherein, The locking part is a locking groove provided on the electrode plate. The opening of the locking groove and the opening of the limiting groove are arranged on the same side. The locking groove is used for the limiting part to lock in.

6. The inspection connector as described in claim 1, characterized in that, The inspection connector also includes a probe, and the top of the connector body is provided with a mounting groove communicating with the slot. The probe is inserted into the mounting groove for connection with the electrode.

7. The patrol plug of claim 6, wherein, The probe has a wire at one end away from the slot, and the top of the plug body has a wiring groove that communicates with the mounting slot. The end of the wiring groove away from the mounting slot is located on the outer side wall of the plug body, and the wire is at least partially located in the wiring groove.

8. The patrol plug of claim 7, wherein, The inspection connector also includes a pressure cap on the top of the connector body; a wire pressing part is provided on the side of the pressure cap near the wiring groove, and the wire pressing part extends along the length direction of the wiring groove to limit the wire to abut against the wiring groove. And / or, the pressure cap is provided with a top block, which is inserted into the mounting groove for contact with the probe.

9. The patrol plug of claim 1, wherein, The clamping mechanism further includes a rotating shaft, the elastic element includes a torsion spring, the rotating shaft is disposed on the insertion body, the pressing block is rotatably connected to the rotating shaft, and the torsion spring is sleeved on the rotating shaft and abuts against the insertion body and the pressing block respectively.

10. A battery inspection device, characterized by, Includes the inspection connector as described in any one of claims 1 to 9.

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