A board end connector

Abstract

The application discloses a board end connector, which comprises an insulator, a top plate, a bottom plate, two side plates and a partition; the top plate, the bottom plate and the two side plates jointly form a functional space, and the partition separates the functional space into a forward opening docking cavity and an operation cavity located at the rear end of the docking cavity; a terminal fixed in the insulator, which comprises an operation section, a fixed section, a connecting section and a docking section; the operation section and the fixed section are opposite and spaced apart in the up-down direction to form a spacing space; a lock plate fixed to the insulator and located at both ends of the operation cavity in the left-right direction, the lock plate is formed with an elastic buckle arm part exposed to the operation cavity and capable of being elastically deformed in the left-right direction; an operation body slidingly arranged in the operation cavity of the insulator and formed with an expansion part embedded into the spacing space, the operation body is formed with a lock buckle matching part corresponding to the elastic buckle arm part, and the lock buckle matching part can realize multi-position locking of the operation body sliding in the front-rear direction.

Description

Technical Field

[0001] This application relates to a board-end connector. Background Technology

[0002] Relevant prior art can be found in Chinese Utility Model Patent No. CN219498219U, which discloses a front-plug, rear-hinged FPC connector that prevents the back cover from detaching. The connector includes a plastic body and electrical terminals. The rear end of the plastic body has a hinged back cover. On both sides of the back cover near the plastic body, outwardly extending pivots are provided. The rear end of the support portion has a limiting portion that restricts the rearward movement of the pivots and protrudes upwards. A horizontally arranged support shaft is provided within the terminal clearance groove. The pressing end includes a support portion and a pressing portion. The support portion has a limiting groove for mating and fitting the support shaft, with the opening facing upwards. The limiting portion in the support portion restricts the rearward movement of the pivots and protrudes upwards, while the limiting groove in the support portion restricts the mating and fits the support shaft, with the support shaft confined within the limiting groove. Under the dual constraint of the limiting portion and the limiting groove, the back cover is ensured not to detach. However, the actual product still has the risk of detachment. The limiting portion can only reduce the risk of the back cover detaching, but cannot completely eliminate it.

[0003] Therefore, a new board-end connector needs to be developed to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this application is to provide a board-end connector that can resist vibration and prevent the operating body from falling off.

[0005] To achieve the aforementioned objective, this application provides the following technical solution:

[0006] A board-end connector, comprising:

[0007] An insulator having a top plate, a bottom plate opposite the top plate in the vertical direction, two side plates connecting the two ends of the top plate and the bottom plate in the left-right direction perpendicular to the vertical direction, and a middle partition.

[0008] The top plate, bottom plate, and two side plates together enclose a functional space, and the central partition divides the functional space into a front-opening docking cavity and an operating cavity located at the rear end of the docking cavity.

[0009] A terminal, fixed within an insulator, is provided with a first functional part, the first functional part including:

[0010] The operating segment extends in a forward and backward direction perpendicular to the vertical and horizontal directions;

[0011] A fixed section extends in the front-to-back direction and is spaced apart from the operating section in the up-down direction to form an interval space, the interval space being connected to the operating cavity;

[0012] The connecting segment connects one end of the operating segment and the fixed segment in the vertical direction;

[0013] The docking section is formed by extending forward in the front-back direction from one end of the operating section and / or the fixed section connected to the connecting section. The docking section has at least a portion of contact protrusions extending into the docking cavity for electrical connection with the docking module.

[0014] A locking plate is fixed to an insulator and located at both ends of the operating cavity in the left-right direction. The locking plate has an elastic buckle arm that protrudes into the operating cavity and can elastically deform in the left-right direction.

[0015] An operating body is slidably disposed within the operating cavity of an insulator in a back-and-forth direction, the operating body including an expansion portion embedded in a spacer.

[0016] The operating body has locking engagement parts at both ends along the left and right directions. The locking engagement parts cooperate with the elastic buckle arm to realize multi-position locking of the operating body as it slides along the front and back directions.

[0017] Furthermore, the insulator has recessed side sliding grooves on the inner surfaces of both ends of the operating cavity in the left-right direction, the side sliding grooves extend in the front-back direction, and the operating body protrudes into the side sliding grooves at both ends in the left-right direction to form side sliding protrusions.

[0018] Furthermore, the elastic buckle arm protrudes into the side sliding limiting groove to form a locking part, and the outer surface of the side sliding protrusion is formed in an undulating shape to form the locking engagement part. The locking part elastically engages with the locking engagement part in the left-right direction to realize multi-position locking of the operating body sliding in the front-back direction.

[0019] Furthermore, the insulator has a clearance gap on the side of the elastic buckle arm that is away from the operating cavity in the left-right direction. The clearance gap is connected to the side sliding limiting groove in the left-right direction to accommodate the elastic deformation of the elastic buckle arm.

[0020] Furthermore, a bent portion is formed on the locking piece that protrudes into the side sliding limiting groove, and the bent portion stops at the rear end face of the side sliding protrusion.

[0021] Furthermore, the elastic buckle arm is formed by tearing the locking plate and extends in the front-to-back direction. The two ends of the elastic buckle arm are integrally connected with the locking plate to form a fixed beam. The buckle part is formed by the elastic buckle arm protruding from the middle in the front-to-back direction.

[0022] Furthermore, it includes: a first sliding limiting groove, formed on the inner surface of the bottom plate at the operating cavity position and extending in the front-rear direction; the lower surface of the operating body protrudes to form a convex rib that slides within the first sliding limiting groove.

[0023] Furthermore, there are two first functional units, which are arranged opposite each other and spaced apart in the left-right direction, and the fixed section of one first functional unit is integrally connected to the fixed section of the other first functional unit through a connecting part.

[0024] Furthermore, the connecting portion extends into a sheet shape along the front-back direction and the left-right direction, and the left and right sides of the connecting portion are respectively connected to the lower edges of the two first functional portions.

[0025] Furthermore, a rear receiving groove extending in the front-rear direction is formed on the inner surface of the bottom plate at the operating cavity location. The rear receiving groove communicates upward with the first sliding limiting groove. The connecting part is limited and fixed in the rear receiving groove, and the protruding rib is slidably supported on the connecting part.

[0026] Furthermore, when the operating body slides forward relative to the insulator in the front-back direction to the first preset position, the rear end edge of the top plate covers the full width of the front end edge of the operating body in the left-right direction; when the operating body slides backward relative to the insulator in the front-back direction to the second preset position, the rear end edge of the top plate does not cover the full width of the front end edge of the operating body in the left-right direction.

[0027] Furthermore, the docking section includes an upper section formed by one end of the operation section and the connecting section extending forward in the front-back direction, and a lower section formed by one end of the fixing section and the connecting section extending forward in the front-back direction. The upper section and the lower section are spaced apart in the vertical direction and open forward.

[0028] An upper receiving groove is formed on the inner side of the top plate at the docking cavity location, and at least a portion of the upper section is received within the upper receiving groove;

[0029] The inner side of the bottom plate at the docking cavity location is formed with a lower section receiving groove, and at least a portion of the lower section is fixed within the lower section receiving groove.

[0030] Compared with the prior art, the beneficial effect of this application is that it can resist vibration and prevent the operating body from falling off. Attached Figure Description

[0031] Figure 1 This is a three-dimensional schematic diagram of the board-end connector of this application assembled onto the ribbon cable module, and also shows the docking module, in which the operating body is located in the second preset position.

[0032] Figure 2 yes Figure 1 A three-dimensional diagram viewed from another angle.

[0033] Figure 3 This is a partial exploded perspective view of the board-end connector of this application, specifically showing a three-dimensional schematic diagram after the insulator is separated, with the view angle being a top view.

[0034] Figure 4 This is a front view of the board-end connector of this application.

[0035] Figure 5 This is a rear view of the board-end connector of this application.

[0036] Figure 6 This is an exploded perspective view of the board-end connector of this application.

[0037] Figure 7 It is self Figure 5 A cross-sectional view along line AA in the middle.

[0038] Figure 8 yes Figure 1 A three-dimensional diagram viewed from another angle.

[0039] Figure 9 This is a three-dimensional schematic diagram of the locking plate of the board-end connector in this application.

[0040] Figure 10 This is a three-dimensional schematic diagram of the terminals of the board-end connector of this application.

[0041] Figure 11 This is a side view of the terminals of the board-end connector of this application.

[0042] Figure 12 It is self Figure 4 A cross-sectional view along the BB line.

[0043] Figure 13 It is self Figure 5 A cross-sectional view of the CC line.

[0044] Figure 14 It is self Figure 4 A cross-sectional view of the DD line.

[0045] Figure 15 It is self Figure 4 A cross-sectional view of the EE line. Detailed Implementation

[0046] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0047] In this application, all directions should be referred to as... Figure 1For reference, the direction of the X-axis is defined as the front-back direction, with the positive X-axis being front; the direction of the Y-axis is defined as the up-down direction, with the positive Y-axis being up; and the direction of the Z-axis is defined as the left-right direction.

[0048] Please refer to Figures 1 to 15 The diagram shows a board-end connector disclosed in this application, comprising: an insulator 1, two terminals 2 fixed within the insulator 1, two locking tabs 4 fixed at both ends of the insulator 1 along its width, and an operating body 3 slidably disposed at the rear end of the insulator 1. This board-end connector is generally assembled inside electronic devices for use with a cabling module 1 (such as a flexible circuit board) to achieve docking with a mating module 6 (such as an FPCB, short for Flexible Printed Circuit Board).

[0049] The insulator 1 is made of insulating material and includes a top plate 11, a bottom plate 12 opposite to the top plate 11 in the vertical direction, two side plates 13 connecting the two ends of the top plate 11 and the bottom plate 12 in the horizontal direction, and a central partition 14. The top plate 11, the bottom plate 12, and the two side plates 13 together enclose a functional space (not labeled), and the central partition 14 divides the functional space in the front-back direction into a front-opening docking cavity 1001 and an operating cavity 1002 located at the rear end of the docking cavity 1001.

[0050] The insulator 1 has two terminal slots (not labeled) extending in the front-rear direction. Each terminal slot includes an upper receiving slot 111 formed on the inner side of the top plate 11 at the docking cavity 1001, a lower receiving slot 112 formed on the inner side of the bottom plate 12 at the docking cavity 1001, a rear receiving slot 113 formed on the inner side of the bottom plate 12 at the operating cavity 1002, and a fixing slot 114 formed on the partition 14. The fixing slot 114 connects the upper receiving slot 111, the lower receiving slot 112, and the rear receiving slot 113 in the front-rear direction. A first sliding limiting slot 102 extending in the front-rear direction is also formed on the inner surface of the bottom plate 12 at the operating cavity 1002, and the rear receiving slot 113 communicates upwards with the first sliding limiting slot 102.

[0051] Please refer to Figure 5 , Figure 7 and Figure 8 As shown, the side plate 13 of the insulator 1 has a recessed side sliding limiting groove 101 on its inner side surface at the location of the operating cavity 1002, which communicates with the operating cavity 1002 in the left-right direction. A locking piece assembly groove 104 (see figure) is formed on the outer side of the side sliding limiting groove 101 (referring to the side away from the operating cavity 1002 in the left-right direction), which communicates with the side sliding limiting groove 101 in the left-right direction. Figure 5The outer side of the locking plate assembly groove 104 (referring to the side away from the operating cavity 1002 in the left-right direction) has a clearance gap 105 that communicates with the locking plate assembly groove 104. The locking plate 4 is inserted and assembled into the locking plate assembly groove 104 from back to front. The side sliding limiting groove 101 is located on the side of the locking plate 4 closer to the operating cavity 1002 in the left-right direction, and the clearance gap 105 is located on the side of the locking plate 4 away from the operating cavity 1002 in the left-right direction. The side sliding limiting groove 101, the locking plate assembly groove 104, and the clearance gap 105 all extend in the front-back direction.

[0052] Please refer to Figure 7 , Figure 8 and Figure 14 As shown, along the front-to-back direction, with connecting segment 23 as the boundary, the top plate 11 includes a front section 1101 at the front end and a rear section 1102 at the rear end; the bottom plate 12 includes a front section 1201 at the front end and a rear section 1202 at the rear end; the side plate 13 includes a front section 1301 at the front end and a rear section 1302 at the rear end. Please refer to... Figure 6 and combined Figure 14 As shown, along the front-rear direction, the length of the rear section 1102 of the top plate is less than that of the rear section 1202 of the bottom plate, so that the operating cavity 1002 forms an opening shape that faces backward and upward, which facilitates the assembly of the operating body 3 and its movement along the front-rear direction.

[0053] Please refer to Figure 15 As shown, the base plate 12 has anti-retraction protrusions 106 at both ends along the left-right direction, near the opening end, protruding into the docking cavity 1001. These anti-retraction protrusions 106 are used to lock with the mating structure on the docking module 6, preventing the docking module 6 from exiting the docking cavity 1001. For example, as... Figure 1 As shown, notches 61 can be formed on both sides of the docking module 6, and the anti-retraction protrusion 106 is locked and fixed to the notches 61.

[0054] Please refer to Figures 5 to 9As shown, the locking piece 4 is formed from a metal sheet and includes a flat main body 40, a latching lug 43 formed by folding back the rear end edge of the main body 40, an elastic latching arm 41 formed by tearing at the middle position of the main body 40, and a bent portion 42 formed by tearing and bending the main body 40 at the rear end position of the elastic latching arm 41. The main body 40 is inserted into the locking piece assembly groove 104, and the latching lug 43 is inserted into the side plate 13 (in the corresponding mounting groove, not labeled). The elastic latching arm 41 extends in the front-to-back direction, and both ends are integrally connected to the main body 40 as a fixed beam. The elastic latching arm 41 is stamped and bent at the middle position in the front-to-back direction to form a latching portion 411 protruding into the side sliding limiting groove 101. The middle of the elastic latching arm 41 can elastically deform in the left-to-right direction, and the clearance gap 105 is used to accommodate the elastic deformation of the elastic latching arm 41.

[0055] The terminal 2 is inserted and assembled into the terminal slot from back to front, and includes a flat connecting part 26, a terminal mating section 27 formed by extending backward from the rear end of the connecting part 26, and two first functional parts 201 formed by bending upward and forward from both ends of the connecting part 26 in the left and right direction.

[0056] The first functional unit 201 includes an operating segment 24 extending in a front-rear direction, a fixed segment 25 extending in a front-rear direction and spaced apart from the operating segment 24 in a vertical direction, a connecting segment 23 connecting the front ends of the operating segment 24 and the fixed segment 25 and extending in a vertical direction, an upper segment 21 formed by the end connected to the operating segment 24 and the connecting segment 23 extending further forward in a front-rear direction, and a lower segment 22 formed by the end connected to the fixed segment 25 and the connecting segment 23 extending further forward in a front-rear direction. The operating segment 24 and the fixed segment 25 are spaced apart in a vertical direction to form a rearward-opening gap space 20, which communicates with the operating cavity 1002. The upper segment 21 and the lower segment 22 are spaced apart in a vertical direction to form a forward-opening fitting space (not labeled), which communicates with the operating cavity 1002.

[0057] Furthermore, the upper section 21 is correspondingly accommodated within the upper section receiving groove 111. The lower section 22 is correspondingly accommodated within the lower section receiving groove 112. The connecting section 23 is correspondingly accommodated within the fixing groove 114. The connecting section 26 is correspondingly accommodated within the rear section receiving groove 113. The terminal mating section 27 protrudes rearward beyond the insulator 1. The two sides of the terminal mating section 27 are further bent and extended to form multiple piercing portions 271, and the multiple piercing portions 271 on one side of the terminal mating section 27 are staggered with the multiple piercing portions 271 on the other side of the terminal mating section 27 in the front-rear direction. The piercing portions 271 are used to pierce the ribbon cable module 1 (such as a flexible circuit board) and achieve fixation and signal transmission.

[0058] Please refer to Figures 1 to 12 As shown, the operating body 3 is slidably assembled within the operating cavity 1002 of the insulator 1. The operating body 3 includes a base 30, two side-sliding protrusions 301 protruding from both ends of the base 30 in the left-right direction, two pressure rods 302 extending further forward from the front end of the base 30, and a rib 303 protruding downward from the lower surface of the base 30 and extending in the front-rear direction. The bending portion 42 stops at the rear end face of the side-sliding protrusions 301 to limit excessive rearward movement of the operating body 3.

[0059] The side-sliding protrusion 301 extends into the side-sliding limiting groove 101 to guide the sliding of the operating body 3 in the front-back direction, similar to a slide rail. It also provides sliding positioning in the up-down direction, increasing the contact area between the operating body 3 and the insulator 1, improving the contact stability between them, and reducing the risk of the operating body 3 detaching from the insulator 1 due to vibration. The outer surface of the side-sliding protrusion 301 (i.e., the outer end face of the side-sliding protrusion 301 in the left-right direction) is undulating (e.g., wavy or sawtooth) to form a locking engagement part 31. The locking part 411 elastically engages with the locking engagement part 31 in the left-right direction to achieve multi-position locking of the operating body 3 in the front-back direction.

[0060] Two pressure rods 302 extend forward through the partition 14 and protrude into the docking cavity 1001, preferably located near the two ends of the docking cavity 1001 in the left-right direction. When the docking module 6 (such as an FPCB) is inserted into the docking cavity 1001, the pressure rods 302 press downward against the upper surface of the docking module 6, and the convex ribs 303 slide within the corresponding first sliding limiting grooves 102. This increases the contact limiting area between the operating body 3 and the insulator 1, improves the contact stability between the operating body 3 and the insulator 1, and reduces the risk of the operating body 3 detaching from the insulator 1 due to vibration of the board end connector. In this application, three convex ribs 303 are provided, of which the two convex ribs 303 located at both ends in the left-right direction slide on the connecting part 26.

[0061] Please refer to Figure 12As shown, the front end of the base 30 is recessed rearward to form an implantation groove 304. The height of the inner bottom surface of the implantation groove 304 near the front opening is lower than the height away from the front opening, thus forming a stepped expansion portion 32 (essentially a continuous surface with a step difference). The operating segment 24 extends into the implantation groove 304 and presses against the expansion portion 32. When the expansion portion 32 slides forward in the front-rear direction, it forces the operating segment 24 and the fixing segment 25 to expand (or widen) with the end where the connecting segment 23 is located as the fulcrum, thereby causing the upper segment 21 and the lower segment 22 to contract (or shrink) with the end where the connecting segment 23 is located as the fulcrum, thereby clamping the front edges of the upper segment 21 and the lower segment 22 to the docking module 6, ensuring stable electrical contact. Of course, in other embodiments, the implantation groove 304 may not be provided, and the stepped expansion portion 32 may be formed directly on the upper surface of the base 30 to achieve the same effect.

[0062] In this application, when the operating body 3 slides forward relative to the insulator 1 in the front-back direction to the first preset position (that is, when the operating body 3 slides forward to its limit and the docking module 6 is assembled in place), the rear end edge of the top plate 11 covers the full width of the front end edge of the operating body 3 in the left-right direction. This increases the contact limiting area between the operating body 3 and the insulator 1, improves the contact stability between the operating body 3 and the insulator 1, and reduces the risk of the operating body 3 detaching from the insulator 1 due to vibration of the board end connector. When the operating body 3 slides backward relative to the insulator 1 in the front-back direction to the second preset position (that is, when the operating body 3 slides backward to its limit and the docking module 6 is not assembled or removed), the rear end edge of the top plate 11 does not cover the full width of the front end edge of the operating body 3 in the left-right direction; the rear end edge of the top plate 11 only covers the two pressure rods 302 in the left-right direction.

[0063] To achieve the first and second preset positions, the locking engagement part 31 forms two recesses (not marked) spaced apart in the front-to-back direction to match the locking part 411 and achieve position locking limitation.

[0064] Please refer to Figures 10 to 12As shown, the upper section 21 of terminal 2 extends downward and backward from the end away from the connecting section 23 to form an elastic contact section 231. A gap is provided between the elastic contact section and the upper section in the vertical direction. Two contact protrusions 232 are formed on the elastic contact section 231, protruding into the docking cavity 101, and the two contact protrusions 232 are spaced apart in the front-back direction. The upper section 21 can swing vertically within the upper receiving groove 111 with the end where the connecting section 23 is located as a fulcrum. The elastic contact section 231 can swing vertically with the end connected to the upper section 21 as a fulcrum. The contact protrusions 232 are used for elastic contact with the docking module 6. The lower section 22 has two contact protrusions 221 spaced apart in the front-rear direction. The two contact protrusions 221 extend into the docking cavity 101, and at least one of the contact protrusions 221 is aligned with one of the contact protrusions 232 in the vertical direction (in a preferred embodiment of this application, both contact protrusions 221 are aligned with both contact protrusions 232 in the vertical direction). The unique structure of the terminal 2 of this application, especially the unique structural design of the first functional part 201, can improve the contact reliability between the terminal 2 and the docking module 6 (such as FPCB), so that the contact point of the contact protrusion 232 elastically contacts the docking module 6 and the support point of the contact protrusion 221 supporting the docking module 6 are aligned, and the force is uniform, preventing the docking module 6 from deforming and reducing the contact reliability.

[0065] In this application, the upper section 21 and the lower section 22 are collectively referred to as the mating section, meaning that the mating section can be any one or both of the upper section 21 and the lower section 22. Furthermore, the connecting section 23 extends vertically and is offset in the front-back direction to form a non-linear shape, similar to a crankshaft or an S-shape, to increase the lever arm length and the elasticity of the corresponding position. In this application, the free end of the operating section 24 is also provided with a downwardly protruding contact protrusion (unlabeled) for contacting the expansion section 32. The extension length of the upper section 21 is substantially the same as the extension length of the operating section 24 (which can be expressed as follows: in the front-back direction, the effective length from the contact protrusion 232 at the front end of the upper section 21 to the connecting section 23 is substantially the same as the effective length from the contact protrusion to the connecting section 23), to ensure that the lever arm is substantially the same, improving the stress balance of each part of the terminal 2 during the sliding process of the socket body 3, and improving the overall structural stability and lifespan of the terminal 2.

[0066] Please refer to Figures 11 to 15 and combined Figure 6As shown in this application, the front end of the pressure rod 302 protrudes downward to form a pressing protrusion 3021. When the operating body 3 slides forward in the front-back direction to a first preset position, the pressing protrusion 3021 is located in front of the two contact protrusions 232; when the operating body 3 slides backward in the front-back direction to a second preset position, the pressing protrusion 3021 is located behind at least one of the contact protrusions 232. Similarly, when the operating body 3 slides forward in the front-back direction to the first preset position, the pressing protrusion 3021 is located in front of the two contact protrusions 221; when the operating body 3 slides backward in the front-back direction to the second preset position, the pressing protrusion 3021 is located behind at least one of the contact protrusions 221. Furthermore, in this application, the horizontal plane passing through the lowest point of the pressing protrusion 3021 in the vertical direction is used as the reference plane, and the highest point of the protrusion 106 in the vertical direction is located on the reference plane. This ensures the stability of the locking mechanism of the docking module 6 and prevents the risk of the docking module 6 detaching from the board connector after one end of the docking module 6 is pulled upward.

[0067] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A board-end connector, characterized in that, include: An insulator having a top plate, a bottom plate opposite the top plate in the vertical direction, two side plates connecting the two ends of the top plate and the bottom plate in the left-right direction perpendicular to the vertical direction, and a middle partition. The top plate, bottom plate, and two side plates together enclose a functional space, and the central partition divides the functional space into a front-opening docking cavity and an operating cavity located at the rear end of the docking cavity. A terminal, fixed within an insulator, is provided with a first functional part, the first functional part including: The operating segment extends in a forward and backward direction perpendicular to the vertical and horizontal directions; A fixed section extends in the front-to-back direction and is spaced apart from the operating section in the up-down direction to form an interval space, the interval space being connected to the operating cavity; The connecting segment connects one end of the operating segment and the fixed segment in the vertical direction; The docking section is formed by extending forward in the front-back direction from one end of the operating section and / or the fixed section connected to the connecting section. The docking section has at least a portion of contact protrusions extending into the docking cavity for electrical connection with the docking module. A locking plate is fixed to an insulator and located at both ends of the operating cavity in the left-right direction. The locking plate has an elastic buckle arm that protrudes into the operating cavity and can elastically deform in the left-right direction. An operating body is slidably disposed within the operating cavity of an insulator in a back-and-forth direction, the operating body including an expansion portion embedded in a spacer. The operating body has locking engagement parts at both ends along the left and right directions. The locking engagement parts cooperate with the elastic buckle arm to realize multi-position locking of the operating body as it slides along the front and back directions.

2. The board-end connector according to claim 1, characterized in that: The insulator has recesses on the inner surfaces of both ends of the operating cavity in the left-right direction to form side sliding limiting grooves, the side sliding limiting grooves extend in the front-back direction, and the operating body protrudes into the side sliding limiting grooves at both ends in the left-right direction to form side sliding protrusions.

3. The board-end connector according to claim 2, characterized in that: The elastic buckle arm protrudes into the side sliding limiting groove to form a locking part. The outer surface of the side sliding protrusion is formed in an undulating shape to form the locking engagement part. The locking part elastically engages with the locking engagement part in the left-right direction to realize multi-position locking of the operating body sliding in the front-back direction.

4. The board-end connector according to claim 2, characterized in that: The insulator has a clearance gap on the side of the elastic buckle arm away from the operating cavity in the left-right direction. The clearance gap is connected to the side sliding limiting groove in the left-right direction and is used to accommodate the elastic deformation of the elastic buckle arm.

5. The board-end connector according to claim 2, characterized in that: The locking plate has a bent portion that protrudes into the side sliding limiting groove, and the bent portion stops at the rear end face of the side sliding protrusion.

6. The board-end connector according to claim 3, characterized in that: The elastic buckle arm is formed by tearing the locking plate and extends in the front-to-back direction. The two ends of the elastic buckle arm are integrally connected with the locking plate to form a fixed beam. The buckle part is formed by the elastic buckle arm protruding from the middle in the front-to-back direction.

7. The board-end connector according to claim 1, characterized in that, include: The first sliding limiting groove is formed on the inner surface of the bottom plate at the operating cavity position and extends in the front-rear direction; The lower surface of the operating body has a protruding rib that is located within the first sliding limit groove.

8. The board-end connector according to claim 7, characterized in that: The first functional part is provided in two, and the two first functional parts are arranged opposite each other and spaced apart in the left and right direction. The fixed section of one first functional part is integrally connected to the fixed section of the other first functional part through a connecting part.

9. The board-end connector according to claim 8, characterized in that: The connecting part extends into a sheet shape along the front-back direction and the left-right direction, and the left and right sides of the connecting part are respectively connected to the lower edges of the two first functional parts.

10. The board-end connector according to claim 8 or 9, characterized in that: A rear section receiving groove extending in the front-rear direction is also formed on the inner surface of the bottom plate at the operating cavity location. The rear section receiving groove communicates upward with the first sliding limiting groove. The connecting part is limited and fixed in the rear section receiving groove, and the protruding rib is slidably supported on the connecting part.

11. The board-end connector according to claim 1, characterized in that: When the operating body slides forward relative to the insulator in the front-back direction to the first preset position, the rear end edge of the top plate covers the full width of the front end edge of the operating body in the left-right direction. When the operating body slides backward relative to the insulator in the front-back direction to the second preset position, the rear end edge of the top plate does not cover the full width of the front end edge of the operating body in the left-right direction.

12. The board-end connector according to claim 1, characterized in that: The docking section includes an upper section formed by one end of the operation section and the connecting section extending forward in the front-back direction, and a lower section formed by one end of the fixed section and the connecting section extending forward in the front-back direction. The upper section and the lower section are spaced apart in the vertical direction and open forward. An upper receiving groove is formed on the inner side of the top plate at the docking cavity location, and at least a portion of the upper section is received within the upper receiving groove; The inner side of the bottom plate at the docking cavity location is formed with a lower section receiving groove, and at least a portion of the lower section is fixed within the lower section receiving groove.

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