Quick connecting device for pull rope of electronic lock

Abstract

According to the quick connecting device for the electronic lock pull rope, the electronic lock pull rope comprises a rope core and a rope sleeve wrapping the rope core, and the quick connecting device comprises a pull rope connecting piece and a hollow fixing sleeve. The pull rope connecting piece is connected with the tail end of the rope sleeve of the electronic lock pull rope, and elastic pieces evenly distributed in the circumferential direction of the pull rope connecting piece are arranged at the end, away from the tail end of the rope sleeve, of the pull rope connecting piece. Each elastic piece extends from the pull rope connecting piece in the direction forming an acute angle with the central axis of the pull rope connecting piece. According to the utility model, the assembly of the electronic lock pull rope can be completed only by inserting the pull rope connecting piece into the fixed sleeve, and the disassembly of the electronic lock pull rope can be completed only by rotating a certain angle and pulling on the basis, so that the assembly and disassembly of the electronic lock pull rope are more convenient, and the assembly efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to a quick connection device for an electronic lock pull rope. Background Art

[0002] In the prior art, a new energy vehicle is provided with a charging base for matching with a charging gun to charge the vehicle battery. In order to prevent the charging gun from accidentally separating from the charging base during charging, an electronic lock is usually installed on the charging base. During charging, the electronic lock locks the charging gun inserted into the charging base on the charging base to prevent the charging gun from accidentally separating from the charging base and ensure safety during charging.

[0003] In the prior art, an electronic lock generally includes a housing, a mobile base installed in the housing, a locking pin fixed to the mobile base, and a pull cord connected to the mobile base. There are many ways to fix the pull cord of electronic locks on the market, including an integrated pull cord structure and a split pull cord fixing structure. The integrated pull cord structure is difficult to disassemble and replace, and the replacement cost will increase accordingly; while the split pull cord fixing structure currently on the market is more complicated in terms of installation and disassembly, and the efficiency of disassembly and assembly is also low. Utility Model Content

[0004] The utility model aims to provide a quick connection device for an electronic lock pull cord, which can realize the installation and removal of the electronic lock pull cord conveniently and quickly.

[0005] According to one aspect of the utility model, a quick connection device for an electronic lock pull rope is provided, wherein the electronic lock pull rope comprises a rope core and a rope loop wrapping the rope core, and the quick connection device comprises: a pull rope connector, wherein the pull rope connector is connected to the tail end of the rope loop of the electronic lock pull rope, and the end of the pull rope connector away from the tail end of the rope loop is provided with spring pieces evenly distributed along the circumference of the pull rope connector, and each of the spring pieces extends from the pull rope connector in a direction forming an acute angle with the central axis of the pull rope connector; a hollow fixed sleeve, wherein a loading port and a wire outlet spaced apart along the central axis thereof are provided in the fixed sleeve, and a planar portion extending between the loading port and the wire outlet and corresponding to the spring pieces one by one is provided on the inner wall of the fixed sleeve, and adjacent spring pieces at the loading port are provided. A protrusion is provided on the inner wall between the planar parts, and the protrusion protrudes radially inward from the inner wall, and the planar part and the protrusion form the loading port; wherein the fixed sleeve can receive the pull rope connector through the loading port, so that after the spring sheet of the pull rope connector completely moves through the loading port along the central axis of the fixed sleeve, the spring sheet opens to abut against the axial inner wall of the corresponding protrusion through its axial end; and wherein the pull rope connector can rotate in the fixed sleeve, so that the spring sheet is compressed toward the central axis of the fixed sleeve by the corresponding planar part during the rotation, until when it rotates to a certain angle, the outer surface of the spring sheet fits with the corresponding planar part so that the pull rope connector can be pulled out of the fixed sleeve.

[0006] According to one aspect of the utility model, the number of the spring sheets and the number of the planar portions are both two, wherein the two spring sheets are arranged to be symmetrical with respect to the central axis of the pull rope connector, and wherein the two planar portions are arranged on opposite inner walls of the fixing sleeve.

[0007] According to one aspect of the utility model, the certain angle is 90°. According to one aspect of the utility model, each of the protrusions includes a guide surface, which is located on the axial outer wall of the protrusion and has a shape that matches the outer surface shape of the elastic sheet, so as to guide the elastic sheet when the pull rope connector is installed.

[0008] According to one aspect of the utility model, the outer surface of the elastic piece is an arc-shaped surface convex outward, and the guide surface is an arc-shaped surface concave toward the inside of the fixing sleeve along the axial direction of the fixing sleeve.

[0009] According to one aspect of the utility model, each of the protrusions further includes a limiting surface, which is located radially outside the guide surface, so as to axially limit the pull rope connector when the pull rope connector is installed in the fixing sleeve.

[0010] According to one aspect of the utility model, a plurality of mutually parallel reinforcing ribs are provided on the planar portion, and the plurality of reinforcing ribs extend in a direction parallel to the central axis of the fixing sleeve and are spaced apart from each other.

[0011] According to one aspect of the utility model, the pull rope connector has a rope threading hole that passes through the pull rope connector along the central axis of the pull rope connector, and the rope threading hole includes a first hole segment and a second hole segment that are connected to each other, the inner diameter of the second hole segment is larger than the inner diameter of the first hole segment, the second hole segment is used to accommodate the tail end of the rope loop of the electronic lock pull rope, and the first hole segment is used to allow the rope core of the electronic lock pull rope extending out of the rope loop to pass through and extend outside the pull rope connector.

[0012] According to one aspect of the utility model, the pull rope connector includes a rope loop accommodating portion, a limiting flange, a coupling portion and a main body portion which are connected in sequence, the rope loop accommodating portion, the limiting flange and the coupling portion are all cylindrical, the main body portion is prismatic, the elastic sheet is evenly arranged on the outer surface of the main body portion along the circumferential direction, the second hole segment is arranged in the rope loop accommodating portion for accommodating the tail end of the rope loop, the outer diameter of the coupling portion is adapted to the spacing between the relative protrusions so that the pull rope connector is engaged between the relative protrusions when it is installed in the fixed sleeve, and the outer diameter of the limiting flange is larger than the outer diameter of the coupling portion so that it is used to abut against the limiting surface of the protrusion when the coupling portion is engaged between the relative protrusions.

[0013] According to one aspect of the utility model, a notch is provided on the protrusion, and the notch extends from the radial end surface of the protrusion to the limiting surface along the radial direction so that the protrusion is not continuous in the circumferential direction.

[0014] According to one aspect of the utility model, a wire outlet plate is provided at the end of the planar portion away from the loading port, the wire outlet plate is perpendicular to the planar portion, and the wire outlet port is opened on the wire outlet plate so that the rope core of the electronic lock pull rope passes through the wire outlet port and extends outside the fixed sleeve.

[0015] According to one aspect of the utility model, a hollow rubber sleeve with openings at both ends is provided on the side of the outlet plate facing the loading port, and a boss-shaped positioning portion is also provided at the end of the main body away from the rope sleeve accommodating portion, and the positioning portion is connected to the end of the main body via a neck having an outer diameter smaller than that of the positioning portion. In the process of the pull rope connector being gradually loaded into the fixed sleeve through the loading port, the positioning portion is gradually loaded into the rubber sleeve, so that the rope core of the electronic lock pull rope extending from the positioning portion is always wrapped by the rubber sleeve before passing through the outlet.

[0016] The utility model provides a quick connection device for an electronic lock pull cord, comprising a split pull cord connector and a fixed sleeve. When the pull cord connector needs to be assembled to the fixed sleeve, the spring sheet of the pull cord connector is inserted into the interior of the fixed sleeve through the loading port. After being loaded into the interior of the fixed sleeve, the spring sheet will open so as to abut against the axial inner wall of the corresponding protrusion through its axial end portion, thereby making it impossible for the pull cord connector to be withdrawn from the fixed sleeve. When the pull cord connector needs to be withdrawn from the fixed sleeve, the pull cord connector is rotated in the fixed sleeve. During the rotation, the relative flat portion in the fixed sleeve will compress the already opened spring sheet of the pull cord connector toward the central axis of the fixed sleeve until the pull cord connector has been rotated by a certain angle, and the spring sheet will be compressed to a degree of fit with the flat portion, thereby making it possible for the pull cord connector to be pulled out of the fixed sleeve through the loading port. It can be seen that the quick connection device for the electronic lock pull cord provided by the utility model only needs to insert the pull cord connector into the fixed sleeve to complete the assembly of the electronic lock pull cord, and only needs to rotate and pull on this basis to complete the disassembly of the electronic lock pull cord, which not only makes the installation and disassembly of the electronic lock pull cord more convenient, but also greatly improves the assembly efficiency. The quick connection device for the electronic lock pull cord has a simple structure, low cost and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate the present invention and, together with the description, further serve to explain the principles of the present invention and enable those skilled in the relevant art to make and use the embodiments described herein.

[0018] Figure 1 It is a schematic diagram of the use state of the quick connection device for the electronic lock pull rope according to the embodiment of the utility model;

[0019] Figure 2 is along Figure 1A partial cross-sectional view of a quick connection device for an electronic lock pull cord taken along line AA in FIG. 1 , which shows a state in which the pull cord connector is installed in the fixed sleeve and the two opposing spring pieces are both opened to abut against the axial inner wall of the corresponding protrusion via the corresponding axial end portions;

[0020] Figure 3 is a partial cross-sectional view of a quick connection device for an electronic lock pull cord according to an embodiment of the utility model, which shows the pull cord connector from Figure 2 The position shown begins to rotate to a certain angle, in which the outer surfaces of the two spring pieces are axially compressed toward the center of the fixed sleeve by the opposite flat portions;

[0021] Figure 4 is a schematic structural diagram of a quick connection device for an electronic lock pull cord according to an embodiment of the utility model, wherein the upper half of the fixed sleeve is removed to show the pull cord connector installed in the fixed sleeve;

[0022] Figure 5 It is a three-dimensional view at one angle of a fixing sleeve of a quick connection device for an electronic lock pull cord according to an embodiment of the utility model;

[0023] Figure 6 is a three-dimensional view of a fixing sleeve of a quick connection device for an electronic lock pull cord according to an embodiment of the utility model at another angle;

[0024] Figure 7 is a cross-sectional view of the lower half of a fixing sleeve of a quick connection device for an electronic lock pull cord according to an embodiment of the utility model;

[0025] Figure 8 is another cross-sectional view of the lower half of the fixing sleeve of the quick connection device for the electronic lock pull cord according to the embodiment of the utility model;

[0026] Fig. 9 is a side view of a fixing sleeve of a quick connection device for an electronic lock pull cord according to an embodiment of the utility model;

[0027] Fig.10 is a stereoscopic view of a pull cord connector of a quick connection device for an electronic lock pull cord according to an embodiment of the utility model; and

[0028] Fig.11 It is a front view of a pull cord connector of a quick connection device for an electronic lock pull cord according to an embodiment of the utility model.

[0029] The features of the utility model will become more apparent in the following detailed description in conjunction with the accompanying drawings, in which similar reference numerals always identify corresponding elements. In the accompanying drawings, similar reference numerals generally represent identical, functionally similar, and / or structurally similar elements. Unless otherwise specified, the drawings provided throughout the application should not be interpreted as drawings drawn to scale. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0031] However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present invention. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, the description of the known technology is omitted to avoid unnecessary confusion of the concept of the present invention.

[0032] The terms used herein are only for describing specific embodiments and are not intended to limit the present invention. The term "comprising" used herein indicates the existence of features, steps, operations, but does not exclude the existence or addition of one or more other features.

[0033] In the case of using expressions such as "at least one of A, B, and C, etc.", it should generally be interpreted in accordance with the meaning of the expression generally understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.). In the case of using expressions such as "at least one of A, B, or C, etc.", it should generally be interpreted in accordance with the meaning of the expression generally understood by those skilled in the art (for example, "a system having at least one of A, B, or C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0034] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification, and should not be interpreted in an idealized or overly rigid manner.

[0035] Reference Figures 1 to 11The utility model discloses a quick connection device 1000 for an electronic lock pull cord, wherein the electronic lock pull cord 100 comprises a rope core 101 and a rope loop 102 wrapping the rope core 101, and the quick connection device 1000 comprises a pull cord connector 200 and a hollow fixed sleeve 300. The pull cord connector 200 is connected to the tail end of the rope loop 102 of the electronic lock pull cord 100, and one end of the pull cord connector 200 away from the tail end of the rope loop 102 is provided with spring pieces 201 evenly distributed along the circumference of the pull cord connector 200, and each of the spring pieces 201 extends from the pull cord connector 200 in a direction forming an acute angle with the central axis of the pull cord connector 200. The fixed sleeve 300 is provided with a loading port 301 and a wire outlet 302 spaced apart along its central axis, and the inner wall of the fixed sleeve 300 is provided with a plane portion 303 extending between the loading port 301 and the wire outlet 302 and corresponding to the elastic sheet one by one, and a protrusion 304 is provided on the inner wall between adjacent plane portions 303 at the loading port 301, and the protrusion 304 protrudes radially inward from the inner wall, and the plane portion 303 and the protrusion 304 surround the loading port 301. The fixed sleeve 300 can receive the pull rope connector 200 through the loading port 301, so that after the spring piece 201 of the pull rope connector 200 completely moves through the loading port 301 along the central axis of the fixed sleeve 300, the spring piece 201 opens to abut against the axial inner wall of the corresponding protrusion 304 through its axial end; and the pull rope connector 200 can rotate in the fixed sleeve 300, so that the spring piece 201 is compressed toward the central axis of the fixed sleeve 300 by the corresponding planar portion 303 during the rotation, until it rotates to a certain angle, the outer surface of the spring piece 201 fits with the corresponding planar portion 303, so that the pull rope connector 200 can be pulled out of the fixed sleeve 300.

[0036] exist Figure 2 , 4In the embodiments shown in 10 and 11, the number of the spring pieces 201 and the flat part 303 are both two, wherein the two spring pieces 201 are arranged to be symmetrical with each other about the central axis of the pull rope connector 200, and wherein the two flat parts 303 are arranged on the opposite inner walls of the fixed sleeve 300. Specifically, the two spring pieces 201 are arranged in an "eight" shape about the central axis of the pull rope connector 200. In one embodiment according to the utility model, the certain angle is 90°. Of course, the number of spring pieces 201 of the pull rope connector in the quick connection device for the pull rope of the electronic lock according to the utility model is not limited to two, it can be three, four or other numbers, and the number of the flat parts 303 is not limited to two, it can also be set to three, four or other numbers. In addition, the certain angle is not limited to 90°, it can be set to other values ​​according to the number of spring pieces 201 and the flat parts 303, such as 60°, 30°, etc.

[0037] In one embodiment, Figure 2 and 3 As shown, both the loading port 301 and the wire outlet 302 are at a certain distance from the axial end surface of the fixed sleeve 300, so that after the pull-cord connector 200 is loaded into the fixed sleeve 300, a part of the pull-cord connector 200 can be covered, thereby protecting the pull-cord connector 200. In addition, a connecting member is further provided on the outer wall of the fixed sleeve 300 to facilitate connecting the fixed sleeve 300 to the electric vehicle.

[0038] By providing a separate pull cord connector 200 and a fixed sleeve 300, when the pull cord connector 200 needs to be assembled to the fixed sleeve 300, the spring sheet 201 of the pull cord connector 200 is inserted into the fixed sleeve 300 through the loading port 301. After being loaded into the fixed sleeve 300, the spring sheet 201 will open so as to abut against the axial inner wall of the corresponding protrusion 304 through its axial end, so that the pull cord connector 200 cannot be withdrawn from the fixed sleeve 300. When withdrawing from the fixed sleeve 300, the pull rope connector 200 is rotated in the fixed sleeve. During the rotation, the plane portion 303 in the fixed sleeve 300 will compress the elastic sheet 201 of the already opened pull rope connector 200 toward the central axis of the fixed sleeve 300, until the pull rope connector 200 has rotated a certain angle, and the elastic sheet 201 will be compressed to the extent of fitting with the plane portion 303, so that the pull rope connector 200 can be pulled out of the fixed sleeve 300 through the loading port 301. It can be seen that the quick connection device 1000 for the electronic lock pull cord provided by the utility model only needs to insert the pull cord connector 200 into the fixed sleeve 300 to complete the assembly of the electronic lock pull cord, and only needs to rotate a certain angle and pull it on this basis to complete the disassembly of the electronic lock pull cord, which not only makes the installation and disassembly of the electronic lock pull cord more convenient, but also greatly improves the assembly efficiency. The quick connection device 1000 for the electronic lock pull cord has a simple structure, low cost and high reliability.

[0039] See also Figure 5 , 8 9, each of the protrusions 304 includes a guide surface 3041, the guide surface 3041 is located on the axial outer wall of the protrusion 304 and the shape of the guide surface 3041 is configured to match the outer surface shape of the elastic sheet 201, so as to guide the elastic sheet 201 when the pull cord connector 200 is installed. The setting of the guide surface 3041 can not only guide the pull cord connector 200, but also reduce the resistance when the pull cord connector 200 is installed, making it easier to install the pull cord connector 200.

[0040] In one embodiment, Fig.10 and 11 As shown, the outer surface of the spring piece 201 is an arc-shaped surface convex outwards, and as shown Figure 5 , 8 As shown in Figures 9 and 10 , the guide surface 3041 is an arcuate surface that is concave toward the inside of the fixed sleeve 300 along the axial direction of the fixed sleeve 300. By setting the guide surface 3041 as an arcuate surface that matches the outer surface of the elastic sheet 201, the process of the pull rope connector 200 being installed into the fixed sleeve 300 can be smoother.

[0041] Furthermore, in order to prevent the pull rope connector 200 from moving in the axial direction after being installed in the fixing sleeve 300, as shown in FIG. Figure 5 , 8 As shown in FIG. 9 , each of the protrusions 304 further includes a limiting surface 3042, which is located radially outside the guide surface 3041, so as to axially limit the pull cord connector 200 when the pull cord connector 200 is installed in the fixed sleeve 300. Specifically, the limiting surface 3042 is an annular plane centered on the central axis of the fixed sleeve 300.

[0042] In order to further enhance the guiding effect on the spring sheet 201, a notch 3043 is provided on the protrusion 304. The notch 3043 extends from the radial end surface of the protrusion 304 to the limiting surface 3042 in the radial direction so that the protrusion 304 is not continuous in the circumferential direction. Figure 5 and 9 In the embodiment shown, a notch 3043 is provided on each protrusion 304, so that the two protrusions 304 actually include four guide surfaces 3041. The four guide surfaces 3041 can center the pull cord connector 200 when the pull cord connector 200 is initially installed, thereby preventing the pull cord connector 200 from deflecting. Figure 7 As shown, the radial end faces of each protrusion 304 are arc-shaped surfaces. On the one hand, the arc-shaped surfaces can prevent the outer surface of the spring piece 201 of the pull-cord connector 200 from being scratched during the installation of the pull-cord connector 200. On the other hand, the arc-shaped surfaces can also guide the pull-cord connector 200 along the circumferential direction when the pull-cord connector 200 is rotated, thereby avoiding the pull-cord connector 200 from getting stuck during the rotation process.

[0043] In one embodiment, in order to increase the structural strength and rigidity of the fixing sleeve 300 and the plane portion 303, a plurality of mutually parallel reinforcing ribs 3031 are provided on the plane portion 303, and the plurality of reinforcing ribs 3031 extend in a direction parallel to the central axis of the fixing sleeve 300 and are spaced apart from each other. Figure 7-9 As shown, three reinforcing ribs 3031 are provided on each plane portion 303, and the length of the reinforcing rib 3031 is less than the length of the plane portion 303. Of course, the number of the reinforcing ribs 3031 is not limited to three, and it can be provided to be more or less than three.

[0044] See also Figure 2, describing a pull rope connector 200 according to an embodiment of the present invention, the pull rope connector 200 has a rope threading hole 202 that passes through the pull rope connector 200 along the central axis of the pull rope connector 200, the rope threading hole 202 includes a first hole segment 2021 and a second hole segment 2022 that are interconnected, the inner diameter of the second hole segment 2022 is larger than the inner diameter of the first hole segment 2021, the second hole segment 2022 is used to accommodate the tail end of the rope loop 102 of the electronic lock pull rope 100, and the first hole segment 2021 is used to allow the rope core 101 of the electronic lock pull rope 100 extending out of the rope loop 102 to pass through and extend outside the pull rope connector 200.

[0045] exist Figure 4 , 10 In the embodiment shown in Figure 11, the pull rope connector 200 includes a rope loop accommodating portion 203, a limiting flange 204, a joint portion 205 and a main body 206 connected in sequence, the rope loop accommodating portion 203, the limiting flange 204 and the joint portion 205 are all cylindrical, the main body 206 is prismatic, the two spring pieces 201 are respectively arranged on opposite sides of the main body 206, and the second hole section 2022 is arranged in the rope loop accommodating portion 203 for accommodating At the tail end of the rope loop 102, the outer diameter of the engaging portion 205 is adapted to the spacing between the opposite protrusions 304 so that the pull rope connector 200 is engaged between the opposite protrusions 304 when the pull rope connector 200 is installed in the fixing sleeve 300, and the outer diameter of the limiting flange 204 is larger than the outer diameter of the engaging portion 205 so that the engaging portion 205 is abutted against the limiting surface 3042 of the protrusion 304 when the engaging portion 205 is engaged between the opposite protrusions 304. Further, as Fig.11 As shown, at the connection portion between the main body 206 and the spring piece 201 , the main body 206 is provided with an inwardly recessed transition portion to avoid stress concentration at the connection portion and to enhance the fatigue strength of the connection portion between the main body 206 and the spring piece 201 .

[0046] exist Figure 4 , 6In the embodiments shown in , 8 and 9, a wire outlet plate 305 is provided at the end of the plane portion 303 away from the loading port 301, the wire outlet plate 305 is perpendicular to the plane portion 303, and the wire outlet 302 is opened on the wire outlet plate 305 so that the rope core 101 of the electronic lock pull rope 100 passes through the wire outlet 302 and extends outside the fixed sleeve 300. In one embodiment, the wire outlet plate 305 is a rectangular plate. Further, in order to enhance the structural strength and rigidity of the wire outlet plate 305, two reinforcing plates are further provided on the side of the wire outlet plate 305 away from the pull rope connector 200, and the two reinforcing plates extend from opposite sides of the wire outlet plate 305 along the axial direction of the fixed sleeve 300 to the adjacent axial end surface of the fixed sleeve 300 and extend along the height direction of the wire outlet plate 305 to the opposite inner wall of the fixed sleeve 300.

[0047] In order to further position the pull cord connector 200 in the axial direction after the pull cord connector 200 is installed in the fixing sleeve 300 and to prevent the rope core 101 of the electronic lock pull cord 100 from damaging the fixing sleeve 300, as shown in FIG. Figure 1 and 2 As shown, a hollow rubber sleeve 306 with two ends opened is provided on the side of the outlet plate 305 facing the loading port 301, and a boss-shaped positioning portion 207 is also provided at the end of the main body 206 away from the rope loop accommodating portion 203. The positioning portion 207 is connected to the end of the main body 206 via a neck 208 whose outer diameter is smaller than that of the positioning portion 207. In the process of the pull rope connector 200 being gradually loaded into the fixed sleeve 300 through the loading port 301, the positioning portion 207 is gradually loaded into the rubber sleeve 306, so that the rope core 101 of the electronic lock pull rope 100 extending from the positioning portion 207 is always wrapped by the rubber sleeve 306 before passing through the outlet port 302.

[0048] So far, the embodiments of the utility model have been described in detail in conjunction with the accompanying drawings. It should be noted that the implementation methods not shown or described in the drawings or the body of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each component are not limited to the various specific structures, shapes or methods mentioned in the embodiments, and ordinary technicians in the field can simply change or replace them.

[0049] It should also be noted that, in the specific embodiments of the present invention, unless otherwise indicated, the numerical parameters in this specification and the attached claims are approximate values ​​and can be changed according to the desired characteristics obtained through the content of the present invention. Specifically, all numbers used in the specification and claims to express the size, range conditions, etc. of the composition should be understood to be modified by the term "about" in all cases. In general, the meaning of the expression refers to the change of ±10% in some embodiments, ±5% in some embodiments, ±1% in some embodiments, and ±0.5% in some embodiments by a specific number.

[0050] Those skilled in the art will appreciate that the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways without departing from the spirit and teachings of the present invention. All of these combinations and / or combinations fall within the scope of the present invention.

[0051] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick connection device for an electronic lock pull cord, the electronic lock pull cord comprising a rope core and a rope sleeve wrapping the rope core, characterized in that: The quick connection device comprises: A pull cord connector, the pull cord connector is connected to the tail end of the rope loop of the electronic lock pull cord, and one end of the pull cord connector away from the tail end of the rope loop is provided with spring pieces evenly distributed along the circumference of the pull cord connector, each of the spring pieces extending from the pull cord connector in a direction forming an acute angle with the central axis of the pull cord connector; A hollow fixed sleeve, wherein a loading port and a wire outlet spaced apart along the central axis thereof are provided in the fixed sleeve, a plane portion corresponding to the spring sheet and extending between the loading port and the wire outlet is provided on the inner wall of the fixed sleeve, a protrusion portion is provided on the inner wall between adjacent plane portions at the loading port, the protrusion portion protrudes radially inward from the inner wall, and the loading port is surrounded by the plane portion and the protrusion portion; wherein the fixing sleeve is capable of receiving the drawstring connector via the loading port, so that after the elastic sheet of the drawstring connector completely passes through the loading port along the central axis of the fixing sleeve, the elastic sheet opens to abut against the axial inner wall of the corresponding protrusion via its axial end; and In which, the pull rope connector can rotate in the fixed sleeve, so that the spring sheet is compressed toward the central axis of the fixed sleeve by the corresponding planar portion during the rotation, until it rotates to a certain angle, the outer surface of the spring sheet fits with the corresponding planar portion, so that the pull rope connector can be pulled out of the fixed sleeve.

2. The quick connection device according to claim 1, characterized in that: The number of the elastic sheets and the number of the planar portions are both two, wherein the two elastic sheets are arranged to be symmetrical with respect to the central axis of the pull rope connector, and wherein the two planar portions are arranged on opposite inner walls of the fixing sleeve.

3. The quick connection device according to claim 2, characterized in that: The certain angle is 90°.

4. The quick connection device according to claim 1, characterized in that: Each of the protrusions comprises a guide surface, which is located on the axial outer wall of the protrusion and has a shape that matches the outer surface shape of the elastic sheet so as to guide the elastic sheet when the pull rope connector is installed.

5. The quick connection device according to claim 4, characterized in that: The outer surface of the elastic sheet is an arc-shaped surface convex outward, and the guide surface is an arc-shaped surface concave toward the inside of the fixing sleeve along the axial direction of the fixing sleeve.

6. The quick connection device according to claim 4, characterized in that: Each of the protrusions further includes a limiting surface, which is located radially outside the guide surface and is used to axially limit the pull rope connector when the pull rope connector is installed in the fixing sleeve.

7. The quick connection device according to claim 1, characterized in that: A plurality of mutually parallel reinforcing ribs are arranged on the plane portion, and the plurality of reinforcing ribs extend in a direction parallel to the central axis of the fixing sleeve and are spaced apart from each other.

8. The quick connection device according to claim 6, characterized in that: The pull rope connector has a rope threading hole that passes through the pull rope connector along the central axis of the pull rope connector, and the rope threading hole includes a first hole segment and a second hole segment that are interconnected, the inner diameter of the second hole segment is larger than the inner diameter of the first hole segment, the second hole segment is used to accommodate the tail end of the rope loop of the electronic lock pull rope, and the first hole segment is used to allow the rope core of the electronic lock pull rope extending out of the rope loop to pass through and extend outside the pull rope connector.

9. The quick connection device according to claim 8, characterized in that: The pull rope connector includes a rope loop accommodating portion, a limiting flange, a coupling portion and a main body portion which are connected in sequence. The rope loop accommodating portion, the limiting flange and the coupling portion are all cylindrical, and the main body portion is prismatic. The elastic sheets are evenly arranged on the outer surface of the main body portion along the circumferential direction. The second hole segment is arranged in the rope loop accommodating portion for accommodating the tail end of the rope loop. The outer diameter of the coupling portion is adapted to the spacing between the opposite protrusions so that the pull rope connector is engaged between the opposite protrusions when it is installed in the fixed sleeve. The outer diameter of the limiting flange is larger than the outer diameter of the coupling portion so that it can be pressed against the limiting surface of the protrusion when the coupling portion is engaged between the opposite protrusions.

10. The quick connection device according to claim 6, characterized in that: A notch is provided on the protrusion, and the notch extends from the radial end surface of the protrusion to the limiting surface along the radial direction so that the protrusion is not continuous in the circumferential direction.

11. The quick connection device according to claim 9, characterized in that: An outlet plate is provided at the end of the planar portion away from the loading port, the outlet plate is perpendicular to the planar portion, and the outlet port is opened on the outlet plate so that the rope core of the electronic lock pull rope passes through the outlet port and extends out of the fixed sleeve.

12. The quick connection device according to claim 11, characterized in that: A hollow rubber sleeve with openings at both ends is provided on the side of the outlet plate facing the loading port, and a boss-shaped positioning portion is also provided at the end of the main body away from the rope loop accommodating portion, and the positioning portion is connected to the end of the main body via a neck with an outer diameter smaller than that of the positioning portion. In the process of the pull rope connector being gradually loaded into the fixed sleeve through the loading port, the positioning portion is gradually loaded into the rubber sleeve, so that the rope core of the electronic lock pull rope extending from the positioning portion is always wrapped by the rubber sleeve before passing through the outlet.

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