A charging interface for a point-to-read picture book

Abstract

The present invention relates to the technical field of connectors, and in particular to a charging interface of a point-reading picture book. The charging interface of the point-reading picture book is used to connect a charger and a point-reading picture book, and comprises a male connector and a female connector. The male connector comprises a male sleeve, a first screw sleeve and an elastic arch, and the male sleeve is fixedly sleeved on a cable of the charger; the first screw sleeve is slidably inserted between the male sleeve and the cable of the charger, and forms a threaded fit with the cable of the charger; the elastic arch is inserted in the male sleeve, the elastic arch extends along the axial direction of the male sleeve, and slidably fits with the first screw sleeve; the female connector is fixedly arranged on the point-reading picture book, and comprises a female sleeve and a mounting portion, the mounting portion is inserted in the female sleeve, a female terminal is inserted in the mounting portion, and a self-locking threaded fit is formed between the mounting portion and the first screw sleeve; before and after the male connector and the female connector are assembled, one end of the first screw sleeve close to the male sleeve is located on both sides of the arch top of the elastic arch, so that the first screw sleeve and the mounting portion can be locked under the elastic action of the elastic arch.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to a charging interface for a point-to-read picture book. Background Art

[0002] A picture book with touch-reading function is an interactive reading tool that combines a picture book with a reading pen. Through the recognition technology of the reading pen, children can hear corresponding sound effects or voices when reading picture books, thereby increasing the fun and interactivity of reading. In some picture books with touch-reading function, in order to reduce the weight of the reading pen and make it easier for children to hold, audio equipment, recognition equipment, control equipment and batteries are usually integrated into the picture book with touch-reading function.

[0003] During the use of the point-to-read picture book, the battery needs to be charged; during the charging process, the charger needs to be plugged into the charging interface of the point-to-read picture book. In the related technology, for example, Chinese patent CN111478136B discloses a power adapter and its electrical connector, wherein the electrical connector includes an electrical connection end, the input end of the electrical connection end is connected to the output end of the adapter basic circuit when in use, the output end of the electrical connection end is connected to the electrical connector micro-control unit, the electrical connector micro-control unit is connected to a signal sending module, the electrical connector micro-control unit sends an indication signal to the adapter micro-control unit through the signal sending module, the adapter micro-control unit will drive the feedback unit to send a feedback signal only when it receives the indication signal sent by the matching electrical connector, the electrical connector micro-control unit is also connected to a feedback signal receiving circuit for receiving the feedback signal sent by the feedback unit.

[0004] The charging interface of the point-to-read picture book is prone to falling off when in use, which, on the one hand, makes it impossible to charge the point-to-read picture book, and on the other hand, also poses a safety hazard. Summary of the invention

[0005] Based on this, it is necessary to provide a charging interface for a point-reading picture book to address the problem that the charging interface of the current point-reading picture book is easy to fall off.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A charging interface for a point-to-point reading picture book, used for connecting a charger and a point-to-point reading picture book; the charging interface of the point-to-point reading picture book comprises a male connector and a female connector that can be plugged into each other, the male connector comprises a male sleeve, a first screw sleeve and an elastic arch, the male sleeve is fixedly sleeved on the cable of the charger; the first screw sleeve is slidably inserted between the male sleeve and the cable of the charger, and forms a threaded fit with the cable of the charger; the elastic arch is inserted in an area surrounded by the male sleeve, the first screw sleeve and the cable of the charger, the elastic arch extends along the axial direction of the male sleeve, and The first screw sleeve is slidably fitted; the female connector is fixedly arranged on the point-reading picture book, and includes a female sleeve and a mounting portion, the mounting portion is inserted in the female sleeve, a female terminal is inserted in the mounting portion, and a self-locking threaded fit is formed between the mounting portion and the first screw sleeve; before the male connector and the female connector are assembled, an end of the first screw sleeve close to the male sleeve is located on a side of the upper dome of the elastic arch close to the first screw sleeve, and after the male connector and the female connector are assembled, an end of the first screw sleeve close to the male sleeve is located on a side of the upper dome of the elastic arch away from the first screw sleeve.

[0008] Furthermore, the female terminal is threadedly connected to the cable of the charger.

[0009] Furthermore, the mounting portion is capable of self-rotation; the female connector also includes a second screw sleeve and a locking assembly, the second screw sleeve is inserted between the female sleeve and the mounting portion, and forms a spiral fit with the female sleeve, and can synchronously rotate with the mounting portion, and can also slide axially relative to the mounting portion, the second screw sleeve is configured to be able to be conductively connected to the female terminal and the point-reading picture book at the same time; the locking assembly is configured to lock the mounting portion on the female sleeve before the male connector and the female connector are assembled; and unlock the mounting portion when the male connector and the female connector are assembled.

[0010] Furthermore, the locking assembly includes a first locking rod and a second locking rod, the first locking rod is inserted in the mounting portion and can elastically slide along the axial direction of the female sleeve, and the two ends of the first locking rod are respectively cooperated with the first screw sleeve and the second locking rod stopper; the second locking rod is inserted in parallel in the female sleeve and can elastically slide along the axial direction of the female sleeve; before the male connector and the female connector are assembled, the second locking rod is inserted into the position where the first locking rod is located under the action of elasticity; when the male connector and the female connector are assembled, the first screw sleeve drives the second locking rod to retract into the female sleeve through the first locking rod.

[0011] Furthermore, the locking assembly also includes a first elastic member, which is connected between the first locking rod and the mounting portion. Under the action of the first elastic member, the first locking rod has a tendency to move in a direction away from the second locking rod.

[0012] Furthermore, the first elastic member is a first compression spring.

[0013] Furthermore, the locking assembly also includes a second elastic member, which is connected between the second locking rod and the female sleeve. Under the action of the second elastic member, the second locking rod has a tendency to move toward a direction close to the first locking rod.

[0014] Furthermore, the second elastic member is a second compression spring.

[0015] Furthermore, the number of the first locking rods and the second locking rods is equal, and there are multiple of each of them, and the multiple first locking rods are arranged along the circumferential direction.

[0016] Furthermore, there are two or more elastic arches, and all of the elastic arches together form an annular structure, which is sleeved on the cable of the charger.

[0017] The beneficial effects of the present invention are:

[0018] When the charging interface of the point-reading picture book provided by the present invention is used, the male connector and the female connector are first aligned, and then the male connector is driven to move in a direction close to the female connector, and the male connector synchronously drives the cable to move in a direction close to the female connector. When the end of the first screw sleeve away from one end of the male sleeve is inserted between the female sleeve and the mounting portion, as the male connector continues to move, the first screw sleeve is synchronously rotated under the thread cooperation of the first screw sleeve and the male sleeve, so that the first screw sleeve is gradually screwed into between the male sleeve and the cable, and at the same time, it is gradually screwed into between the female sleeve and the mounting portion through the self-locking thread cooperation between the male sleeve and the mounting portion. When the end of the first screw sleeve close to one end of the male sleeve passes over the arch of the elastic arch and moves to the other side, under the elastic action of the elastic arch, on the one hand, the first screw sleeve has a tendency to be pulled out between the female sleeve and the mounting portion, so that the positive pressure of the threaded contact surface between the first screw sleeve and the mounting portion can be increased, and then the locking force between the first screw sleeve and the mounting portion can be increased, thereby improving the connection stability between the male connector and the female connector and avoiding falling off. On the other hand, the cable has a tendency to move toward the direction close to the female connector, thereby enhancing the connection strength between the cable and the female terminal and ensuring stability during power transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the three-dimensional structure of the male connector and the female connector of the charging interface of the point-reading picture book provided by an embodiment of the present invention before assembly;

[0020] Figure 2 A schematic cross-sectional view of the male connector and the female connector of the charging interface of the point-to-read picture book provided in one embodiment of the present invention when assembled Figure 1 ;

[0021] Figure 3 A schematic cross-sectional view of the male connector and the female connector of the charging interface of the point-to-read picture book provided in one embodiment of the present invention when assembled Figure 2 ;

[0022] Figure 4 A schematic cross-sectional view of the male connector and the female connector of the charging interface of the point-to-read picture book provided in one embodiment of the present invention when assembled Figure 3 ;

[0023] Figure 5 A schematic diagram of the three-dimensional structure of the elastic arch of the charging interface of the point-reading picture book provided by an embodiment of the present invention when it is assembled on the cable;

[0024] Figure 6 A schematic diagram of the three-dimensional structure of the installation portion of the charging interface of the point-to-read picture book provided by an embodiment of the present invention;

[0025] Figure 7 A schematic cross-sectional view of the mounting portion of a charging interface of a point-to-point reading picture book provided by an embodiment of the present invention;

[0026] Figure 8 A schematic diagram of a three-dimensional cross-sectional structure of a first screw sleeve of a charging interface of a point-reading picture book provided in an embodiment of the present invention.

[0027] in:

[0028] 1. Male connector; 11. Male sleeve; 12. First screw sleeve; 1201. First threaded inner groove; 1202. Second threaded inner groove; 13. Elastic arch; 131. First fixing ring; 132. Second fixing ring;

[0029] 2. Female connector; 21. Female sleeve; 22. Mounting portion; 2201. Mounting hole; 221. Female terminal; 222. Sliding protrusion; 23. Second screw sleeve; 24. Locking assembly; 241. First locking rod; 242. Second locking rod; 243. First compression spring; 244. Second compression spring; 25. Retaining ring;

[0030] 3. Cable; 301. Socket; 302. First threaded protrusion. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned herein, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] like Figures 1 to 8As shown, the charging interface of the point-reading picture book provided by an embodiment of the present invention is used to connect the charger and the point-reading picture book, and is configured to include a male connector 1 and a female connector 2 that can be plugged into each other, the male connector 1 includes a male sleeve 11, a first screw sleeve 12 and an elastic arch 13, the male sleeve 11 is fixedly sleeved on the cable 3 of the charger; the first screw sleeve 12 is slidably inserted between the male sleeve 11 and the cable 3 of the charger, and forms a threaded fit with the cable 3 of the charger; the elastic arch 13 is inserted in the area surrounded by the male sleeve 11, the first screw sleeve 12 and the cable 3 of the charger, and the elastic arch 13 extends along the axial direction of the male sleeve 11 , and slidingly cooperates with the first screw sleeve 12; the female connector 2 is fixedly arranged on the point-reading picture book, and includes a female sleeve 21 and a mounting portion 22, the mounting portion 22 is inserted in the female sleeve 21, and a female terminal 221 is inserted in the mounting portion 22, and a self-locking threaded fit is formed between the mounting portion 22 and the first screw sleeve 12; before the male connector 1 and the female connector 2 are assembled, the end of the first screw sleeve 12 close to the male sleeve 11 is located on the side of the upper arch of the elastic arch 13 close to the first screw sleeve 12, and after the male connector 1 and the female connector 2 are assembled, the end of the first screw sleeve 12 close to the male sleeve 11 is located on the side of the upper arch of the elastic arch 13 away from the first screw sleeve 12.

[0035] Specifically in this embodiment, Figure 2 As shown, the cable 3 of the charger is configured as a round rod-shaped structure and has five coaxially arranged step rod-shaped structures. For the convenience of description, the five step rod-shaped structures are named as the first cable rod, the second cable rod, the third cable rod, the fourth cable rod, and the fifth cable rod from left to right, respectively, wherein the diameter of the first cable rod is smaller than the diameter of the second cable rod; the diameters of the second cable rod and the fifth cable rod are equal and both are smaller than the diameter of the third cable rod; the diameter of the fourth cable rod is larger than the diameter of the second cable rod and smaller than the diameter of the third cable rod.

[0036] like Figure 2 As shown, the male sleeve 11 is configured as an annular structure and has three coaxially arranged step annular structures. For the convenience of description, the three step annular structures are named as the first male ring, the second male ring, and the third male ring from left to right, wherein the inner diameter of the first male ring is equal to the diameter of the first cable rod, and is sleeved on the first cable rod during installation; the inner diameter of the second male ring is equal to the diameter of the second cable rod, and is sleeved on the second cable rod during installation; the inner diameter of the third male ring is larger than the diameter of the third cable rod, and is sleeved on the second cable rod and part of the third cable rod at intervals during installation.

[0037] like Figure 8 As shown, the first screw sleeve 12 is configured as an annular structure, and a first thread inner groove 1201 is provided on the left side of the inner circumferential wall of the first screw sleeve 12, and a second thread inner groove 1202 is provided on the right side of the inner circumferential wall of the first screw sleeve 12, and the pitch of the first thread inner groove 1201 is greater than the pitch of the second thread inner groove 1202 to ensure assembly efficiency; Figure 2As shown, during installation, the left end of the first screw sleeve 12 is inserted between the third male ring of the male sleeve 11 and part of the second cable rod and the third cable rod of the cable 3, and the right end is suspended.

[0038] In order to facilitate the threaded fit between the first screw sleeve 12 and the cable 3, as shown in FIG. Figure 5 As shown, a plurality of first threaded protrusions 302 are provided on the circumferential side wall of the third cable rod of the cable 3 . The plurality of first threaded protrusions 302 are arranged along the circumferential direction and are threadably matched with the first threaded inner groove 1201 when in use.

[0039] like Figure 2 and Figure 5 As shown, the elastic arch 13 is arranged as an arch structure, and the arch top is arranged away from the third cable rod of the cable 3, and the length of the elastic arch 13 on the right side of the arch top is greater than the length of the elastic arch 13 on the left side of the arch top; the elastic arch 13 is inserted between the third public ring of the male sleeve 11 and the second cable rod of the cable 3 during installation.

[0040] like Figure 7 As shown, the mounting portion 22 is configured as a stepped columnar structure, and has four coaxially arranged stepped columnar structures. For ease of description, the four stepped columnar structures are named as the first mother column, the second mother column, the third mother column, and the fourth mother column from left to right, respectively, wherein the diameter of the first mother column is smaller than the diameter of the second mother column, the diameter of the second mother column is smaller than the diameter of the third mother column, and the diameter of the fourth mother column is smaller than the diameter of the first mother column; the female terminal 221 is configured as a round rod-shaped structure. To facilitate the placement of the female terminal 221 and the insertion of the cable 3, a T-shaped sink groove is coaxially opened on the left end face of the first mother column, the T-shaped sink groove extends into part of the third mother column, and the small end is arranged to the right. The female terminal 221 is vertically arranged on the right end wall of the T-shaped sink groove when installed; as shown Figure 2 As shown, the female sleeve 21 is configured as an annular structure, and the mounting portion 22 is inserted into the female sleeve 21 during installation, and together with the female sleeve 21 forms a columnar structure.

[0041] In order to facilitate the threaded fit between the first screw sleeve 12 and the mounting portion 22, as shown in FIG. Figure 7 As shown, an external thread is provided on the outer peripheral wall of the first female column of the mounting portion 22 , and the external thread forms a threaded fit with the second thread inner groove 1202 when in use.

[0042] When using, Figures 2 to 4As shown, first align the male connector 1 and the female connector 2, and then drive the male connector 1 to move in the direction close to the female connector 2. When the right end of the first screw sleeve 12 is inserted between the female sleeve 21 and the mounting portion 22, as the male connector 1 continues to move, the first screw sleeve 12 is synchronously rotated under the thread cooperation of the first screw sleeve 12 and the male sleeve 11, so that the first screw sleeve 12 is gradually screwed into between the male sleeve 11 and the cable 3, and at the same time, it is gradually screwed into between the female sleeve 21 and the mounting portion 22 through the self-locking thread cooperation between the first screw sleeve 12 and the mounting portion 22.

[0043] During the rotation of the first screw sleeve 12, the end of the first screw sleeve 12 close to the male sleeve 11 first moves to the left along the elastic arch 13, and then moves over the arch top of the elastic arch 13 to the left side of the arch top, and synchronously compresses the elastic arch 13. Since the left side of the arch top of the elastic arch 13 extends obliquely along the lower left direction, the first screw sleeve 12 has a tendency to move to the left under the elastic action of the elastic arch 13, and then has a tendency to be pulled out between the female sleeve 21 and the mounting portion 22, so that the positive pressure of the threaded contact surface between the first screw sleeve 12 and the mounting portion 22 can be increased, and then the locking force between the first screw sleeve 12 and the mounting portion 22 can be increased, thereby improving the connection stability and waterproof performance between the male connector 1 and the female connector 2 to avoid falling off. On the other hand, the cable 3 has a tendency to move to the right, and then has a tendency to move in the direction close to the female connector 2, thereby enhancing the connection strength between the cable 3 and the female terminal 221 to ensure stability during power transmission.

[0044] In some embodiments, in order to further improve the connection stability between the male connector 1 and the female connector 2, the female terminal 221 and the charger cable 3 are threadedly connected.

[0045] Specifically in this embodiment, Figure 2 As shown, a socket 301 is coaxially arranged on the right end face of the fifth cable rod of the cable 3, and a second threaded protrusion is arranged on the inner circumferential wall of the socket 301; a threaded groove is arranged on the circumferential side wall of the female terminal 221, and the threaded groove forms a threaded fit with the second threaded protrusion when in use.

[0046] When in use, the female terminal 221 is inserted into the cable 3 through the threaded fit between the thread groove and the second threaded protrusion, thereby further improving the connection stability between the male connector 1 and the female connector 2.

[0047] In a further embodiment, in order to improve the safety of use of the female connector 2, it is configured so that the mounting portion 22 can rotate; the female connector 2 is configured to also include a second screw sleeve 23 and a locking assembly 24, the second screw sleeve 23 is inserted between the female sleeve 21 and the mounting portion 22, and forms a spiral fit with the female sleeve 21, and can rotate synchronously with the mounting portion 22, and can slide axially relative to the mounting portion 22, and the second screw sleeve 23 is configured to be able to be conductively connected to the female terminal 221 and the dot-reading picture book at the same time; the locking assembly 24 is configured to lock the mounting portion 22 on the female sleeve 21 before the male connector 1 and the female connector 2 are assembled; and unlock the mounting portion 22 when the male connector 1 and the female connector 2 are assembled.

[0048] Specifically in this embodiment, Figure 2 As shown, in order to limit the axial position of the mounting portion 22, a retaining ring 25 is coaxially inserted in the female sleeve 21, and the inner diameter of the retaining ring 25 is equal to the diameter of the second female column of the mounting portion 22, and the retaining ring 25 is stopped at the steps of the second female column and the third female column of the mounting portion 22; Figure 4 As shown, the second screw sleeve 23 is configured as an annular structure, and is sleeved between the fourth female column of the mounting portion 22 and the female sleeve 21 during installation.

[0049] In order to facilitate the spiral fit between the second screw sleeve 23 and the female sleeve 21, as shown in FIG. Figure 4 As shown, an outer spiral protrusion is provided on the outer circumferential wall of the second screw sleeve 23, and an inner spiral groove is provided on the inner circumferential wall corresponding to the fourth female column of the female sleeve 21 and the mounting portion 22, and the inner spiral groove and the outer spiral protrusion form a spiral fit.

[0050] In order to facilitate the second screw sleeve 23 to be able to rotate synchronously with the mounting portion 22 and to slide axially relative to the mounting portion 22, as shown in FIG. Figure 6 As shown, a plurality of sliding protrusions 222 are arranged on the circumferential side wall of the fourth mother column of the mounting portion 22, and the plurality of sliding protrusions 222 are evenly arranged along the circumferential direction. The sliding protrusions 222 are arranged as a strip structure and are arranged parallel to the axis of the fourth mother column of the mounting portion 22; correspondingly, a plurality of sliding grooves are arranged on the inner circumferential wall of the second screw sleeve 23, and the number of the sliding grooves is equal to the number of the sliding protrusions 222. The plurality of sliding grooves are evenly arranged along the circumferential direction, and the sliding protrusions 222 are slidably inserted into the sliding grooves during installation.

[0051] Before assembly, the female sleeve 21, the retaining ring 25, the mounting portion 22 and the second screw sleeve 23 together form a columnar structure. At this time, the female connector 2 and the point-reading picture book are disconnected from the conductive connection, thereby improving safety; under the action of the locking assembly 24, the mounting portion 22 is locked on the female sleeve 21.

[0052] During the assembly process, when the external thread moves to the end of the second threaded inner groove 1202, the first threaded protrusion 302 can still continue to move; as the first screw sleeve 12 continues to rotate, the first screw sleeve 12, on the one hand, drives the male sleeve 11 to move toward the direction close to the female connector 2 through the threaded cooperation between the first threaded inner groove 1201 and the first threaded protrusion 302, until the female terminal 221 is inserted into the cable 3, and on the other hand, it drives the mounting part 22 to rotate synchronously through the clamping connection between the external thread and the second threaded inner groove 1202; during the rotation of the mounting part 22, the mounting part 22 synchronously drives the second screw sleeve 23 to extend out of the female sleeve 21 through the spiral cooperation between the inner spiral groove and the outer spiral protrusion, so as to establish a conductive connection with the point-reading picture book, so as to facilitate charging.

[0053] In a further embodiment, the locking assembly 24 is configured to include a first locking rod 241 and a second locking rod 242, the first locking rod 241 is inserted into the mounting portion 22, and can elastically slide along the axial direction of the female sleeve 21, and the two ends of the first locking rod 241 respectively cooperate with the first screw sleeve 12 and the second locking rod 242 stopper; the second locking rod 242 is inserted in parallel into the female sleeve 21, and can elastically slide along the axial direction of the female sleeve 21; before the male connector 1 and the female connector 2 are assembled, the second locking rod 242 is inserted into the position where the first locking rod 241 is located under the action of elasticity; when the male connector 1 and the female connector 2 are assembled, the first screw sleeve 12 drives the second locking rod 242 to retract into the female sleeve 21 through the first locking rod 241.

[0054] Specifically in this embodiment, Figure 2 As shown, the first locking rod 241 is set as a T-shaped round rod structure, and is parallel to the axis of the mounting portion 22 during installation, and the small end of the first locking rod 241 is set to the left; in order to facilitate the installation of the first locking rod 241, as shown Figure 7 As shown, a mounting hole 2201 vertically penetrates the left end face of the second female column of the mounting portion 22. The mounting hole 2201 is arranged as a T-shaped structure with the small end facing left. The first locking rod 241 is slidably inserted into the mounting hole 2201 during installation.

[0055] like Figure 2 As shown, the second locking rod 242 is configured as a T-shaped round rod structure, and is parallel to the axis of the mother sleeve 21 during installation, and the small end of the second locking rod 242 is set to the left; to facilitate the installation of the second locking rod 242, a mounting groove is vertically arranged on the end surface where the right end wall of the third mother column of the mother sleeve 21 and the mounting portion 22 overlaps, and the mounting groove is configured as a T-shaped structure, and the small end is set to the left and is connected to the large end of the mounting hole 2201. The second locking rod 242 is slidably inserted into the mounting groove during installation.

[0056] Before assembly, Figure 2As shown, the small end of the first locking rod 241 partially extends out of the small end of the mounting hole 2201, and the small end of the second locking rod 242 is simultaneously inserted into the small end of the mounting groove and part of the large end of the mounting hole 2201 to limit the rotation of the mounting portion 22.

[0057] During assembly, Figure 3 and Figure 4 As shown, when the external thread moves to the end of the second thread inner groove 1202 , the first locking rod 241 retracts into the installation hole 2201 , and the second locking rod 242 retracts into the installation groove, so as to unlock the self-rotation of the installation portion 22 .

[0058] In a further embodiment, in order to facilitate providing a driving force for the first locking rod to slide elastically along the axial direction of the mounting portion 22, the locking assembly 24 is configured to also include a first elastic member, which is connected between the first locking rod 241 and the mounting portion 22. Under the action of the first elastic member, the first locking rod 241 has a tendency to move in a direction away from the second locking rod 242.

[0059] Specifically in this embodiment, the first elastic member can be configured as a first compression spring 243, such as Figure 2 As shown, the first compression spring 243 is inserted into the large end of the mounting hole 2201 during installation, and is simultaneously sleeved on the small end of the first locking rod 241, and is simultaneously connected between the large end left end wall of the mounting hole 2201 and the large end left end wall of the first locking rod 241. Under the action of the first compression spring 243, the first locking rod 241 has a tendency to retract into the interior of the mounting hole 2201.

[0060] In other embodiments, in order to facilitate providing a driving force for the second locking rod to slide elastically along the axial direction of the mounting portion 22, the locking assembly 24 is configured to also include a second elastic member, which is connected between the second locking rod 242 and the female sleeve 21. Under the action of the second elastic member, the second locking rod 242 has a tendency to move in a direction close to the first locking rod 241.

[0061] Specifically in this embodiment, the second elastic member can be configured as a second compression spring 244, such as Figure 2 As shown, the second compression spring 244 is inserted into the large end of the installation slot during installation, and is simultaneously connected between the large right end portion of the second locking rod 242 and the right end wall of the installation slot. Under the action of the second compression spring 244, the second locking rod 242 tends to extend out of the installation slot.

[0062] In other embodiments, in order to improve the locking stability of the locking assembly 24 , the number of the first locking rods 241 and the second locking rods 242 are equal, and both are provided in plurality, and the plurality of first locking rods 241 are arranged along the circumferential direction.

[0063] Specifically in this embodiment, the number of mounting holes 2201 is equal to the number of first locking rods 241 and are arranged circumferentially; the number of mounting grooves is equal to the number of second locking rods 242 and are arranged circumferentially.

[0064] Before assembly, the small ends of multiple second locking rods 242 are simultaneously inserted into the small end of the mounting groove and part of the large end of the mounting hole 2201, thereby effectively avoiding the problem of locking failure of a single second locking rod 242 on the one hand, and improving the locking stability of the mounting part 22 on the other hand.

[0065] In other embodiments, in order to ensure the connection stability between the male connector 1 and the female connector 2, there are two or more elastic arches 13, and all the elastic arches 13 together form an annular structure, which is sleeved on the cable 3 of the charger.

[0066] Specifically in this embodiment, Figure 5 As shown, the number of elastic arches 13 can be set to twenty, and the twenty elastic arches 13 are evenly arranged along the circumferential direction; in order to facilitate the connection of the twenty elastic arches 13, the charging interface of the point-reading picture book is set to also include a first fixing ring 131 and a second fixing ring 132, such as Figure 3 As shown, the first fixing ring 131 is sleeved on the second cable rod of the cable 3 during installation, and is arranged on the left, and abuts against the right end face of the second public ring of the public sleeve 11. The second fixing ring 132 is sleeved on the second cable rod of the cable 3 during installation, and is arranged on the right, and abuts against the left end face of the third cable rod of the cable 3. The twenty elastic arches 13 are fixedly connected to the outer peripheral wall of the first fixing ring 131 at the left ends, and fixedly connected to the left end face of the second fixing ring 132 at the right ends during installation.

[0067] During the rotation of the first screw sleeve 12 , the provision of the plurality of elastic arches 13 can evenly apply elastic force to the first screw sleeve 12 , thereby ensuring the connection stability between the male connector 1 and the female connector 2 .

[0068] In other embodiments, when the male connector 1 moves from left to right, viewed from left to right, the first screw sleeve 12 rotates counterclockwise, the first thread inner groove 1201 is right-handed, the second thread inner groove 1202 is left-handed, the second thread protrusion is right-handed, and the outer spiral protrusion is left-handed.

[0069] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A charging interface for a point-and-read picture book, characterized in that: Used to connect a charger and a point-to-point reading picture book; the charging interface of the point-to-point reading picture book comprises a male connector and a female connector that can be plugged into each other, the male connector comprises a male sleeve, a first screw sleeve and an elastic arch, the male sleeve is fixedly sleeved on the cable of the charger; the first screw sleeve is slidably inserted between the male sleeve and the cable of the charger, and forms a threaded fit with the cable of the charger; The elastic arch is inserted in the area surrounded by the male sleeve, the first screw sleeve and the cable of the charger, the elastic arch extends along the axial direction of the male sleeve, and the length of the elastic arch on the side of the arch top close to the female sleeve is greater than the length of the elastic arch on the side of the arch top away from the female sleeve, and slidingly cooperates with the first screw sleeve; the female connector is fixedly arranged on the point-reading picture book, and includes a female sleeve and a mounting portion, the mounting portion is inserted in the female sleeve, and a female terminal is inserted in the mounting portion, and a self-locking threaded fit is formed between the mounting portion and the first screw sleeve; before the male connector and the female connector are assembled, one end of the first screw sleeve close to the male sleeve is located on the side of the arch top on the elastic arch close to the first screw sleeve, and after the male connector and the female connector are assembled, one end of the first screw sleeve close to the male sleeve The end is located on the side of the arch top of the elastic arch away from the first screw sleeve. When the end of the first screw sleeve away from the male sleeve is inserted between the female sleeve and the mounting part, as the male connector continues to move, the first screw sleeve is gradually screwed into between the male sleeve and the cable, and at the same time, it is gradually screwed into between the female sleeve and the mounting part through the self-locking thread cooperation with the mounting part. When the end of the first screw sleeve close to the male sleeve moves to the other side over the arch top of the elastic arch, under the elastic action of the elastic arch, on the one hand, the first screw sleeve has a tendency to be pulled out between the female sleeve and the mounting part, so that the positive pressure of the threaded contact surface between the first screw sleeve and the mounting part can be increased, thereby increasing the locking force between the first screw sleeve and the mounting part, and on the other hand, the cable has a tendency to move toward the direction close to the female connector, thereby enhancing the connection strength between the cable and the female terminal.

2. The charging interface of the point-reading picture book according to claim 1, characterized in that: The female terminal is threadedly connected to the cable of the charger.

3. The charging interface of the point-reading picture book according to claim 2, characterized in that: The mounting portion is capable of self-rotation; the female connector further comprises a second screw sleeve and a locking assembly, wherein the second screw sleeve is inserted between the female sleeve and the mounting portion, and forms a spiral fit with the female sleeve, and is capable of self-rotation synchronously with the mounting portion, and is capable of axially sliding relative to the mounting portion, and the second screw sleeve is configured to be capable of being conductively connected to the female terminal and the point-reading picture book at the same time; the locking assembly is configured to lock the mounting portion on the female sleeve before the male connector and the female connector are assembled; and to unlock the mounting portion when the male connector and the female connector are assembled.

4. The charging interface of the point-reading picture book according to claim 3, characterized in that: The locking assembly includes a first locking rod and a second locking rod, the first locking rod is inserted in the mounting portion and can slide elastically along the axial direction of the female sleeve, and the two ends of the first locking rod are respectively matched with the first screw sleeve and the second locking rod stopper; the second locking rod is inserted in parallel in the female sleeve and can slide elastically along the axial direction of the female sleeve; before the male connector and the female connector are assembled, the second locking rod is inserted into the position where the first locking rod is located under the action of elasticity; when the male connector and the female connector are assembled, the first screw sleeve drives the second locking rod to retract into the female sleeve through the first locking rod.

5. The charging interface of the point-reading picture book according to claim 4, characterized in that: The locking assembly further includes a first elastic member, which is connected between the first locking rod and the mounting portion. Under the action of the first elastic member, the first locking rod has a tendency to move in a direction away from the second locking rod.

6. The charging interface of the point-reading picture book according to claim 5, characterized in that: The first elastic member is a first compression spring.

7. The charging interface of the point-reading picture book according to claim 4, characterized in that: The locking assembly also includes a second elastic member, which is connected between the second locking rod and the female sleeve. Under the action of the second elastic member, the second locking rod has a tendency to move toward a direction close to the first locking rod.

8. The charging interface of the point-reading picture book according to claim 7, characterized in that: The second elastic member is a second compression spring.

9. The charging interface of the point-reading picture book according to claim 4, characterized in that: The number of the first locking rods and the number of the second locking rods are equal, and both are in multiple numbers, and the multiple first locking rods are arranged along the circumferential direction.

10. The charging interface of the point-reading picture book according to claim 1, characterized in that: There are two or more elastic arches, and all of the elastic arches together form an annular structure, which is sleeved on the cable of the charger.

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