Drawing type locking device

Abstract

The invention discloses a drawing type locking device which comprises a shell and a retracting mechanism, the retracting mechanism comprises a connecting piece and a hanging piece, a locking space is formed in the shell, and a rotary locking piece used for limiting movement of the connecting piece is arranged in the locking space; the connecting piece is provided with a locking area, locking parts are arranged at the two ends of the rotary locking piece, and locking blocks used for pushing the locking parts are arranged on the two sides of the locking area, so that when the connecting piece moves up and down in the locking space, one locking block abuts against the locking part on one side. A guide block is arranged above the locking area; the distance between an abutting point between the locking block and the locking part and the rotating center of the rotating locking piece is larger than the horizontal distance between the locking block and the rotating center of the rotating locking piece. By the adoption of the hanging piece, the locking performance is stable, the position of the pulled-out pipeline can be fixed, retraction is convenient and fast, and the using fatigue feeling of the hanging piece to a user is reduced.

Description

[0001] This application is a divisional application of an application with an application date of March 15, 2022, an application number of 202210253656.9 and an invention name of “A pull-out locking device”. Technical Field

[0002] The invention relates to the technical field of bathroom equipment, and in particular to a pull-out locking device. Background Art

[0003] The bottom of the existing pull-out faucet hose is generally provided with a weight to help the hose reset. When the user uses the pull-out function, the user needs to hold the water outlet terminal all the time, otherwise it will be reset due to the weight. The user needs to hold the hose and the weight all the time during use, which makes the user easily tired during use, and the experience is not good and inconvenient. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a pull-out locking device with stable locking performance, which can fix the position of the pipe after being pulled out and is easy to retract, thereby reducing the fatigue of the hanging parts on the user.

[0005] In order to solve the above technical problems, the present invention provides a pull-out locking device, comprising a housing and a retracting mechanism for retracting a pipe, the retracting mechanism comprising a connecting piece for connecting the pipe and a hanging piece for pulling down the pipe, a locking space for the connecting piece to enter is provided in the housing, and a rotating locking piece for limiting the movement of the connecting piece is provided in the locking space; The connecting member is provided with a locking area corresponding to the rotating locking piece, and locking parts are provided at both ends of the rotating locking piece. Locking blocks for pushing the locking parts are provided on both sides of the locking area, so that when the connecting member moves up and down in the locking space, one locking block conflicts with the locking part on one side; The distance between the contact point between the locking block and the locking portion and the rotation center of the rotation locking plate is greater than the horizontal distance between the locking block and the rotation center of the rotation locking plate, so as to limit the movement of the connecting member by limiting the rotation of the rotation locking plate.

[0006] As an improvement of the above solution, a guide block for adjusting the rotation state of the rotation locking piece is provided above the locking area, and after the rotation locking piece contacts the guide piece, it enters the locking area at a preset inclination angle.

[0007] As an improvement of the above solution, the connecting piece includes a locking body and a sleeve body for sleeve-connecting a pipe, and the sleeve body is arranged in the locking body to drive the sleeve body.

[0008] As an improvement of the above solution, the locking area is arranged on the side wall of the locking body, the locking body is provided with a positioning groove for stabilizing the movement trajectory of the locking block, and a guide column corresponding to the positioning groove is provided in the shell.

[0009] As an improvement of the above solution, a guide end surface for guiding the guide column into the positioning groove is provided on the top of the locking body, and the guide end surfaces are provided on both sides of the top end of the positioning groove.

[0010] As an improvement of the above solution, the locking blocks arranged on both sides of the locking area are respectively a lower locking block and an upper locking block, and the lower locking block and the upper locking block are respectively located at the lower left and upper right of the rotation center of the rotation locking plate.

[0011] As an improvement of the above solution, the hanging member includes two detachable counterweight blocks, and a clamping groove for clamping the pipeline is left between the two counterweight blocks.

[0012] As an improvement of the above solution, the locking portion is provided with two inclined edges for pushing the rotating locking plate forward and reversely, and the two inclined edges are arranged at an angle of a preset angle.

[0013] As an improvement of the above-mentioned scheme, the locking body is provided with an auxiliary top block for contacting the rotary locking plate, and the rotation center of the rotary locking plate is located between the locking block and the auxiliary top block so as to jointly contact the same contact surface of the rotary locking plate, and a spacing is left between the auxiliary top block and the upper locking block for the locking part to move.

[0014] As an improvement of the above solution, the locking portion is composed of two triangular blocks, and the three sides of the triangular blocks are respectively an end side, a side side and the inclined side; The side edge of the triangular block is connected to the side edge of the rotation locking plate, and the end edge of the triangular block is overlapped with the end edge of the rotation locking plate.

[0015] As an improvement of the above solution, the locking blocks arranged on both sides of the locking area are respectively a lower locking block and an upper locking block, and the lower locking block and the upper locking block are respectively located at the lower right and upper left of the rotation center of the rotation locking plate; The side edges of the triangular block and the side edges of the rotation locking plate are all on the same horizontal plane to form a total side edge; The lower locking block and the upper locking block are both provided with top feelers for contacting the locking portion, and the vertical spacing between the two top feelers is less than the length of the total side.

[0016] The implementation of the present invention has the following beneficial effects: The present invention discloses a pull-out locking device, comprising a housing and a retracting mechanism, wherein the retracting mechanism comprises a connecting piece for connecting a pipe and a hanging piece for pulling down the pipe, wherein a locking space is provided in the housing, wherein a rotating locking piece for limiting the movement of the connecting piece is provided in the locking space, so that when the pipe is pulled out, the connecting piece will enter the locking space to be limited by the rotating locking piece to be pulled out, and accordingly, when the connecting piece is separated from the locking space, the pipe mounted on the hanging piece will be retracted based on the gravity of the hanging piece; Moreover, the connecting member is provided with a locking area corresponding to the rotation locking piece, locking parts are provided at both ends of the rotation locking piece, and locking blocks for pushing the locking parts are provided on both sides of the locking area, and the distance between the interference point between the locking block and the locking part and the rotation center of the rotation locking piece is greater than the horizontal distance between the locking block and the rotation center of the rotation locking piece, so that under different rotation directions of the rotation locking piece, there is a locking block that interferes with the locking part on one side, so that the rotation locking piece can realize the self-locking function, thereby limiting the movement of the connecting member.

[0017] The setting of the guide block can ensure that when the locking body enters the locking space, the lower locking block can make a predetermined contact with the rotating locking plate, so that after the rotating locking plate contacts the guide plate, it enters the locking area at a preset inclination angle, thereby stabilizing the locking action between the locking part and the locking block.

[0018] The active pulling action of the user will cause the rotary locking piece to leave the self-locking state, so that the connecting member can leave the locking space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the first embodiment of the present invention; Figure 2 is a schematic cross-sectional structural diagram of a connector according to a first embodiment of the present invention; Figure 3 It is a schematic diagram of the structural decomposition of the connecting member of the first embodiment of the present invention; Figure 4 is a schematic diagram of the internal structure of a connector of a first embodiment of the present invention; Figure 5 This is a schematic diagram of the self-locking state after the pipeline is drawn to the maximum length in the first embodiment of the present invention; Figure 6 is a schematic diagram of the self-locking state after the pipeline is drawn out in the first embodiment of the present invention; Figure 7 This is a schematic diagram of the state of pulling out the pipeline during resetting in the first embodiment of the present invention; Figure 8is a schematic diagram of the state after the rotation locking plate is reset in the first embodiment of the present invention; Fig. 9 It is a structural schematic diagram of a second implementation case of the present invention; Fig.10 It is a schematic diagram of the self-locking state after the pipeline is drawn to the maximum length in the second embodiment of the present invention; Fig.11 is a schematic diagram of the self-locking state after the pipeline is drawn out in the second embodiment of the present invention; Fig.12 It is a schematic diagram of the state of pulling out the pipeline during resetting in the second embodiment of the present invention; Fig.13 It is a schematic diagram of the state after the rotation locking plate is reset in the second embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] See also Figure 1 , 2 , which is a first embodiment of the present invention, a pull-out locking device, comprising a housing 1 and a retracting mechanism for retracting a pipe, the retracting mechanism comprising a connecting member 2 for connecting a pipe 6 and a hanging member 3 for pulling down the pipe 6, a locking space 4 for allowing the connecting member 2 to enter is provided in the housing 1, and a rotating locking piece 5 for limiting the movement of the connecting member 2 is provided in the locking space 4; The connecting member 2 is provided with a locking area 21 corresponding to the rotating locking piece 5, and locking parts 51 are provided at both ends of the rotating locking piece 5. Locking blocks 22 for pushing the locking parts 51 are provided on both sides of the locking area 21, so that when the connecting member moves up and down in the locking space, one locking block 22 conflicts with the locking part 51 on one side; The distance between the contact point between the locking block 22 and the locking portion 51 and the rotation center of the rotation locking plate 5 is greater than the horizontal distance between the locking block 22 and the rotation center of the rotation locking plate 5, so as to limit the movement of the connecting member 2 by limiting the rotation of the rotation locking plate 5.

[0022] The rotation locking piece 5 is installed on the inner side of the housing 1 and can be connected by means of buckles, screws, iron pins, etc. The rotation center of the rotation locking piece 5 is correspondingly provided with a shaft hole for installation. After installation, the rotation locking piece 5 rotates smoothly.

[0023] Specifically, see Figure 3 and Figure 4The connector 2 includes a locking body 23 and a sleeve body 24 for sleeve pipe 6, and the sleeve body 24 is arranged in the locking body 23 to drive the sleeve body 24. The bottom of the sleeve body 24 is provided with a plurality of threaded pieces 241 for clamping the pipe 6, and each of the threaded pieces 241 is distributed at intervals at the bottom of the sleeve body 24 to form a shrink pipe 6 for the nut to be screwed in, so that when the pipe 6 passes into the preset position in the sleeve body 24, the connection between the pipe 6 and the sleeve body 24 can be fixed by screwing the nut. A limiting edge 242 is provided at the top of the sleeve body 24, and a slot 231 adapted to the limiting edge 242 is provided at the top of the locking body 23 to limit the sleeve body 24 from completely passing through the locking body 23 from top to bottom.

[0024] In order for the locking area 21 to stably move up and down relative to the rotating locking piece 5 after the connecting member 2 enters the locking space 4, the locking area 21 is provided on the side wall of the locking body 23, the locking body 23 is provided with a positioning groove 232 for stabilizing the movement trajectory of the locking block, and the housing 1 is provided with a guide column 11 corresponding to the positioning groove 232. After the guide column 11 enters the positioning groove 232, it moves up and down along the positioning groove 232 to determine the relative movement trajectory between the locking area 21 and the locking block 22.

[0025] Furthermore, in order to ensure that the guide post 11 can enter the positioning groove 232, a guide end face 233 for guiding the guide post 11 into the positioning groove 232 is provided at the top of the locking body 23, and the guide end faces 233 are provided on both sides of the top of the positioning groove 232. The guide end faces 233 are inclined downward toward the upper end of the positioning groove 232, and the tops of two adjacent guide end faces 233 are butted to form a pointed tip, that is, an inverted V shape, to ensure that when the locking body 23 enters the locking space 4, the guide post 11 can fall on the guide end faces 233, and then follow the guidance of the guide end faces 233 to enter the positioning groove 232.

[0026] For details, see Figure 5 The locking blocks 22 disposed on both sides of the locking area 21 are respectively a lower locking block 22a and an upper locking block 22b, and the lower locking block 22a and the upper locking block 22b are respectively located at the lower left and upper right of the rotation center of the rotation locking piece 5. Among them, the locking portion 51 is provided with two inclined edges 51a for pushing the rotation locking piece 5 forward and backward, and the two inclined edges 51a are arranged at an angle of a preset angle. Accordingly, the upper locking block 22b is in the shape of a vertically arranged strip, and the lower locking block 22a is in the shape of a point block.

[0027] Preferably, the locking portion 51 is composed of two triangular blocks. For the convenience of description, the three sides of the triangular block are the end side 51c, the side side 51b and the inclined side 51a. Figure 5 The dotted line is used to divide the rotation locking piece and the locking part for convenience of description. The locking part and the rotation locking piece are an integrated structure.

[0028] The side edge of the triangular block is connected to the side edge of the rotation locking piece 5 , and the end edge of the triangular block is overlapped with the end edge of the rotation locking piece 5 , that is, the boundary edge of the triangular block and the rotation locking piece 5 .

[0029] like Figure 5 As shown, when the pipe 6 is pulled out during use, the pipe 6 drives the locking body 23 to move upward, and after entering the shell 1, the lower locking block 22a will contact an inclined edge 51a of the left locking portion 51, and the rotating locking piece 5 will rotate clockwise. After turning to a certain angle, the other inclined edge of the locking portion 51 will conflict with the lower locking block 22a, thereby generating self-locking, and the locking body 23 cannot continue to move upward, thereby limiting the maximum extension length of the pipe 6 and giving the user a corresponding release prompt.

[0030] like Figure 6 When the pipe 6 is pulled out to the maximum length, the user will correspondingly give up the action of continuing to pull out the pipe, and the locking body 23 will move downward under the gravity of the hanging piece 3; an inclined edge 51a on the right side of the locking portion 51 will be pressed down by the upper locking block 22b, and the rotating locking piece 5 will continue to rotate clockwise. After turning to a certain angle, the other inclined edge on the right side of the locking portion 51 will conflict with the side wall of the lower locking block 22a, thereby generating self-locking, and the locking body 23 cannot continue to move downward. The self-locking state at this time can offset the gravity of the hanging piece 3, avoiding the user from feeling the traction of the hanging piece 3 after the pipe 6 is pulled out.

[0031] like Figure 7When the pipe 6 is finished being used, the user can actively pull it out to release the self-locking state and reset the rotating locking piece 5 at the same time, so that the rotating locking piece 5 can contact the lower locking block 22a in a predetermined state when it is used next time. The locking body 23 is provided with an auxiliary top block 234 for contacting the rotating locking piece 5. The rotation center of the rotating locking piece 5 is located between the locking block 22 and the auxiliary top block 234, so as to contact the same contact surface of the rotating locking piece 5. Therefore, when the user pulls out the rotating locking piece 5, the left locking portion 51 of the rotating locking piece 5 will be lifted up again by the lower locking block 22a, and the rotating locking piece 5 will rotate clockwise to a certain angle. The right locking portion 51 will also be supported by the auxiliary top block 234, and the locking body 23 does not need to continue to move upward, and then the user is fed back a signal of successful unlocking, prompting the user to let go without continuing to pull the pipe 6.

[0032] Then, if Figure 8 , the locking body 23 moves downward, and the rotation locking piece 5 is pressed down by the upper locking block 22b again in a predetermined state. At this time, the upper side 51b of the right locking part 51 will be pressed down, and the rotation locking piece 5 continues to rotate clockwise until the side 51b of the right locking part 51 is out of contact with the upper locking block 22b, and finally an inclined edge of the left locking part 51 of the rotation locking piece 5 is in a state that is easy to be contacted by the lower locking block 22a, that is, the rotation locking piece 5 is reset. A spacing is left between the auxiliary top block 234 and the lower locking block 22a for the locking part to move, so that the locking part 51 of the rotation locking piece 5 has enough space to extend out of the auxiliary top block 234 and the lower locking block.

[0033] Furthermore, in order to ensure that the lower locking block 22a can make a predetermined contact with the rotation locking piece 5 when the locking body 23 enters the locking space 4, a guide block 235 for adjusting the rotation state of the rotation locking piece 5 is provided above the locking area 21. After the rotation locking piece 5 contacts the guide piece, it enters the locking area 21 at a preset tilt angle. The guide block 235 is located above the upper locking block 22b.

[0034] Preferably, the hanging member 3 includes two detachable counterweight blocks 31, and a clamping groove 32 for clamping the pipe is reserved between the two counterweight blocks 31. The two counterweight blocks can be connected by bolts to achieve fixed clamping of the pipe.

[0035] See also Fig. 9, which is a second implementation case of the present invention. Different from the first implementation case, the locking blocks arranged on both sides of the locking area 21 are respectively a lower locking block 22a and an upper locking block 22b, and the lower locking block 22a and the upper locking block 22b are respectively located at the lower right and upper left of the rotation center of the rotation locking piece 5; the side edge 51b of the triangular block and the side edge 5a of the rotation locking piece 5 are both on the same horizontal plane to form a total side edge; The lower locking block 22a and the upper locking block 22b are both provided with a top feeler 23c for contacting the locking portion 22, and the vertical spacing between the two top feelers 23c is smaller than the length of the total side, so that after the locking body 23 is out of the locking space 4, the total side is parallel to the side of the upper locking block 22b.

[0036] In detail, Fig.10 As shown, the angle between the two inclined sides of the locking portion is an obtuse angle, and the length of one inclined side is greater than the length of the other inclined side, so as to make it easier to contact the locking portion 22.

[0037] When the pipe 6 is pulled out during use, the pipe 6 drives the locking body 23 to move upward. After entering the shell 1, the top feeler 23c of the lower locking block 22a will contact the longer inclined edge of the right locking part. The rotating locking piece 5 rotates counterclockwise. After turning to a certain angle, the shorter inclined edge on the same side will conflict with the side wall of the top feeler 23c of the lower locking block 22a, thereby causing self-locking. The locking body 23 cannot continue to move upward, thereby limiting the maximum extension length of the pipe 6 and giving the user a corresponding prompt.

[0038] like Fig.11 When the pipe 6 is pulled out to the maximum length, the user will correspondingly give up the action of continuing to pull out the pipe, and the locking body 23 will move downward under the gravity of the hanging piece 3; the longer inclined edge on the left side of the locking portion 51 will be pressed down by the top feeler 23c of the upper locking block 22b, and the rotating locking piece 5 will continue to rotate counterclockwise. After turning to a certain angle, the shorter inclined edge of the locking portion 51 on the left side will conflict with the side wall of the upper locking block 22b, thereby generating self-locking, and the locking body 23 cannot continue to move downward. The self-locking state at this time can offset the gravity of the hanging piece 3, avoiding the user from feeling the traction of the hanging piece 3 after the pipe 6 is pulled out.

[0039] like Fig.12When the pipe 6 is finished being used, the user can actively pull it out to release the self-locking state. When the locking body 23 moves upward, the self-locking state is released, and the rotation locking piece 5 is reset at the same time. Accordingly, the top feeler 23c of the lower locking block will contact the side of the rotation locking piece 5, causing it to continue to rotate counterclockwise until the lower locking block 22a is self-locked with the right side. The locking body 23 does not need to continue to move upward, and then feeds back a signal of successful unlocking to the user, prompting the user to let go and not continue to pull the pipe 6.

[0040] Then, if Fig.13 After the user lets go, the locking body descends. Since the vertical distance between the two top feelers 23c is less than the total length of the side, before the rotating locking piece 5 changes from the tilted right state to the vertical state, the top feeler of the upper locking block will contact the other side of the rotating locking piece to prevent the rotating locking piece 5 from changing to the tilted left state. Finally, when the locking body 23 is separated from the locking space 4, the side of the rotating locking piece 5 is parallel to the side wall of the upper locking block 22b, so that the locking body 23 can smoothly separate from the locking space 4, and at the same time, the rotating locking piece 5 is in a vertical setting state, which is convenient for the next working operation, that is, the rotating locking piece 5 is reset.

[0041] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A pull-out locking device, characterized in that: It comprises a housing and a retracting mechanism for retracting the pipeline, the retracting mechanism comprises a connecting piece for connecting the pipeline and a hanging piece for pulling down the pipeline, a locking space for the connecting piece to enter is provided in the housing, and a rotating locking piece for limiting the movement of the connecting piece is provided in the locking space; The connecting member is provided with a locking area corresponding to the rotating locking piece, and locking parts are provided at both ends of the rotating locking piece. Locking blocks for pushing the locking parts are provided on both sides of the locking area, so that when the connecting member moves up and down in the locking space, one locking block conflicts with the locking part on one side; The distance between the contact point between the locking block and the locking portion and the rotation center of the rotation locking plate is greater than the horizontal distance between the locking block and the rotation center of the rotation locking plate, so as to limit the movement of the connecting member by limiting the rotation of the rotation locking plate.

2. The pull-out locking device according to claim 1, characterized in that: The connecting piece comprises a locking body and a sleeve body for sleeve-connecting a pipe, wherein the sleeve body is arranged in the locking body to drive the sleeve body.

3. The pull-out locking device according to claim 2, characterized in that: A limiting edge is provided on the top of the sleeve body, and a slot matched with the limiting edge is provided on the top of the locking body. The limiting edge cooperates with the slot to limit the sleeve body from completely passing through the locking body from top to bottom.

4. The pull-out locking device according to claim 3, characterized in that: A guide block for adjusting the rotation state of the rotation locking piece is provided above the locking area. After the rotation locking piece contacts the guide block, it enters the locking area at a preset inclination angle.

5. The pull-out locking device according to claim 2, characterized in that: The locking area is arranged on the side wall of the locking body, the locking body is provided with a positioning groove for stabilizing the movement trajectory of the locking block, and a guide column corresponding to the positioning groove is arranged in the shell.

6. The pull-out locking device according to claim 5, characterized in that: A guide end surface for guiding the guide column into the positioning groove is provided on the top of the locking body, and the guide end surfaces are provided on both sides of the top end of the positioning groove.

7. The pull-out locking device according to claim 6, characterized in that: The guide end surface is inclined downward toward the upper end of the positioning groove, and the tops of two adjacent guide end surfaces are butted against each other to form a pointed tip.

8. The pull-out locking device according to claim 6, characterized in that: The locking blocks arranged on both sides of the locking area are respectively a lower locking block and an upper locking block, and the lower locking block and the upper locking block are respectively located at the lower left and upper right of the rotation center of the rotation locking plate.

9. The pull-out locking device according to claim 8, characterized in that: The locking body is provided with an auxiliary top block for contacting the rotary locking plate, and the rotation center of the rotary locking plate is located between the locking block and the auxiliary top block so as to contact the same contact surface of the rotary locking plate together, and a spacing is left between the auxiliary top block and the upper locking block for the locking part to move.

10. The pull-out locking device according to claim 1, characterized in that: The locking portion is provided with two inclined edges for pushing the rotating locking piece forward and backward, and the two inclined edges are arranged at an angle of a preset angle.

11. The pull-out locking device according to claim 10, characterized in that: The locking portion is composed of two triangular blocks, and the three sides of the triangular blocks are the end side, the side side and the inclined side respectively; The side edge of the triangular block is connected to the side edge of the rotation locking plate, and the end edge of the triangular block is overlapped with the end edge of the rotation locking plate.

12. The pull-out locking device according to claim 11, characterized in that: The locking blocks arranged on both sides of the locking area are respectively a lower locking block and an upper locking block, and the lower locking block and the upper locking block are respectively located at the lower right and upper left of the rotation center of the rotation locking plate; The side edges of the triangular block and the side edges of the rotation locking plate are all on the same horizontal plane to form a total side edge; The lower locking block and the upper locking block are both provided with top feelers for contacting the locking portion, and the vertical spacing between the two top feelers is less than the length of the total side.

13. The pull-out locking device according to any one of claims 11 or 12, characterized in that: The included angle between the two inclined sides of the locking portion is an obtuse angle, and the length of one inclined side is greater than the length of the other inclined side.

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