Self-locking tapered end and retractable door fence with same

Abstract

The utility model discloses a self-locking tapered end and a retractable door fence with the self-locking tapered end, a shell of the self-locking tapered end of the retractable door fence is provided with a ball which is used for being matched with the bottom wall of a knob in a rolling mode, and when the knob of a knob type locking mechanism automatically pivots towards the locking direction of a connector, the self-locking tapered end of the retractable door fence is locked. Friction force borne by the knob can be reduced through rolling fit of the balls and the bottom wall of the knob, so that smoothness of pivoting of the knob is improved, and the problem that automatic locking fails due to the fact that the knob is blocked and even stops pivoting due to large friction force in the pivoting process is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of door barriers, and particularly relates to a self-locking lock head and a retractable door barrier with the same. Background Art

[0002] Most retractable door barriers are used indoors or in courtyards. The retractable door barrier is used to separate indoor space or courtyard space, so as to form different temporary activity spaces indoors or in the courtyard for infants and young children to move. Specifically, the retractable door barrier includes an upper fixed seat, a lower fixed seat, a rotating cylinder and a separating cloth. The rotating cylinder is pivotally installed between the upper fixed group and the lower fixed seat. One end of the separating cloth is arranged on the rotating cylinder. A torsion spring is arranged in the rotating cylinder. Through the rotational elastic force of the torsion spring, the rotating cylinder can be urged to rotate around its own axis in one direction, so as to realize that the rotating cylinder can wind up the separating cloth. When actually using the retractable door barrier, the separating cloth is pulled out a certain length from the rotating cylinder by hand and then the pulled-out end of the separating cloth is fixed. The torsion spring always applies force to the pulled-out separating cloth. After the separating cloth is wound back onto the rotating cylinder, the separated space can be released.

[0003] For the existing retractable door barrier, the locking and unlocking of its roller both need manual operation, such as pressing to unlock, pressing to lock, turning the knob to unlock, turning the knob to lock, etc. Some users forget to lock again after releasing the roller and pulling out and fixing the separating cloth, resulting in the slack of the separating cloth. It is very easy for infants and young children to walk out of the separated space, and there are certain safety hazards.

[0004] Therefore, the applicant has made improvements and proposed a door barrier lock and a retractable door barrier with the same. Its patent application number is CN202323133448.4 and it has been authorized at present. Based on this patent, the applicant found that due to the influence of friction, the knob gets stuck or even stops pivoting due to excessive friction during the process of automatically pivoting in the locking direction, resulting in the failure of automatic locking. Summary of the Utility Model

[0005] The main purpose of the utility model is to propose a self-locking lock head and a retractable door barrier with the same, aiming to solve the problem that the pivoting gets stuck or even stops during the process of the knob automatically pivoting in the locking direction due to large friction.

[0006] To achieve the above purpose, the utility model proposes a self-locking lock head, which includes a housing, a connecting head pivotally installed in the housing, a knob-type locking mechanism for locking the connecting head, and a reset mechanism. The reset mechanism is used to apply an action of slowly pivoting the knob of the knob-type locking mechanism in the direction of locking the connecting head. A ball for rolling contact with the bottom wall of the knob is arranged at a position corresponding to the lower part of the knob on the housing.

[0007] Preferably, the peripheral wall of the knob is formed with an annular enclosure downwardly, and the top of the shell is provided with a accommodating cavity suitable for the knob, and the accommodating cavity is formed with an annular groove for inserting the enclosure at a position corresponding to the enclosure, and at least one ball is arranged in the annular groove, and the ball is in rolling contact with the bottom wall of the enclosure.

[0008] Preferably, a limit piece is provided in the annular groove, and a limit groove for connecting with the limit piece is opened at the position of the enclosure corresponding to the limit piece. The limit piece and the limit groove can be plugged into each other to limit the pivoting of the knob. The knob can move relative to the shell between the position of rising to make the limit groove move away from the limit piece and moving downward to make the limit piece and connect with the limit groove. The ball is provided on the limit piece and a part of the ball is exposed at the top of the limit piece to roll in contact with the bottom wall of the enclosure.

[0009] Preferably, one side of the limiting groove and the bottom wall of the enclosure are transitioned via an inclined surface.

[0010] Preferably, a positioning groove adapted to the limiting member is provided at a position of the inner wall of the shell corresponding to the limiting groove, the annular groove extends to partially penetrate the positioning groove, and the limiting member is detachably fixed in the positioning groove.

[0011] Preferably, a slot is provided at the bottom of the limiting member, a supporting member is partially inserted into the slot, and a portion of the supporting member outside the slot is locked with the housing by a screw, thereby locking the limiting member and the housing.

[0012] Preferably, a bead hole with a small top opening and a large bottom opening is provided on the top of the limiting member, and the bead hole is connected to the slot for accommodating the ball. After the support member is partially inserted into the slot, the bottom opening of the bead hole is covered to prevent the ball from escaping from the bead hole through the bottom opening of the bead hole.

[0013] Preferably, the reset mechanism comprises a seat, a moving part, a gear, a hydraulic rod and a tension spring.

[0014] The gear is coaxially connected to the knob and can pivot along with the pivoting of the knob;

[0015] The moving part is located in the seat body, and is connected to the gear through a rack, and can perform linear reciprocating motion in the seat body as the knob pivots;

[0016] The hydraulic rod is located on the seat body, and the telescopic end of the hydraulic rod is fixedly connected to the moving member and can be extended or retracted with the linear reciprocating motion of the moving member;

[0017] The tension spring is sleeved on the hydraulic rod, one end of the top spring is fixedly connected to the main body of the hydraulic rod, and the other end is connected to the telescopic end of the hydraulic rod, which is used to apply elastic force to the telescopic end of the hydraulic rod to move in the retraction direction, so as to cooperate with the transmission of the moving part and the gear to drive the knob to slowly pivot in the direction of locking the connecting head.

[0018] Preferably, the knob is provided with a rod portion vertically inserted into the interior of the housing. The gear is movably sleeved on the rod portion. The rod portion is provided with a support portion. The bottom wall of the gear contacts the top wall of the support portion. The bottom of the gear is further provided with a pushing portion for horizontally contacting the support portion. When the knob pivots in the unlocking direction, the support portion follows and pivots to contact the pushing portion and drive the gear to pivot. When the telescopic end of the hydraulic rod moves in the retracting direction, the gear follows and pushes the support portion to pivot through the pushing portion so that the knob pivots in the unlocking direction;

[0019] A gasket and a top spring are further provided. The gasket is movably sleeved on the rod portion. The bottom wall of the gasket contacts the top of the gear. One end of the top spring elastically abuts against the inner top wall of the housing, and the other end elastically abuts against the top wall of the gasket. The top spring is used to apply an elastic force to the gear in the direction of moving towards contact with the top wall of the support portion.

[0020] The present utility model further provides a telescopic door barrier, including a self-locking lock head, and the self-locking lock head is the above-mentioned self-locking lock head.

[0021] In the technical solution of the present utility model, balls for rolling cooperation with the bottom wall of the knob are provided on the housing of the self-locking lock head of the telescopic door barrier. When the knob of the knob-type locking mechanism automatically pivots in the direction of locking the connector, the friction force received by the knob can be reduced through the rolling cooperation between the balls and the bottom wall of the knob, thereby improving the smoothness when the knob pivots, and effectively avoiding the problem that the knob jams or even stops pivoting due to large friction force during the pivoting process, resulting in the failure of automatic locking. Description of the Drawings

[0022] Figure 1 It is a cooperation diagram of the ball and the annular groove;

[0023] Figure 2 It is a cross-sectional view of the self-locking lock head;

[0024] Figure 3 It is a first-angle exploded view of the self-locking lock head;

[0025] Figure 4 It is a second-angle exploded view of the self-locking lock head;

[0026] Figure 5 It is an assembled cross-sectional view of the limiting member, the supporting member and the ball;

[0027] Figure 6 It is a three-dimensional view of the telescopic door barrier. Detailed Embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] It should be noted that if there are directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...) involved in the embodiments of the present utility model, then the directional indications are only used to explain the relative position relationship, movement conditions, etc. between components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0030] In addition, if there are descriptions such as "first" or "second" involved in the embodiments of the present utility model, then the descriptions of "first" or "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0031] The present utility model provides a self-locking lock head.

[0032] In the embodiment of the present utility model, as Figures 1 to 6 shown, the self-locking lock head includes a housing 1, a connector 2 pivotally installed in the housing 1, a knob-type locking mechanism for locking the connector 2, and a reset mechanism. The reset mechanism is used to apply a slow pivoting action to the knob 3 of the knob-type locking mechanism in the direction of locking the connector 2. A ball 4 for rolling contact with the bottom wall of the knob 3 is provided at a position corresponding to the lower part of the knob 3 on the housing 1.

[0033] Specifically, a ring-shaped surrounding plate 31 is formed downward on the circumferential wall of the knob 3. An accommodation cavity 11 adapted to the knob 3 is opened at the top of the housing 1. An annular groove 12 for inserting the surrounding plate 31 is formed at a position corresponding to the surrounding plate 31 in the accommodation cavity 11. At least one ball 4 is arranged in the annular groove 12, and the ball 4 is in rolling contact with the bottom wall of the surrounding plate 31.

[0034] In this embodiment, a pair of the balls 4 are arranged in the annular groove 12 in a mirror image manner.

[0035] Specifically, a limit piece 13 is provided in the annular groove 12, and a limit groove 32 for plugging with the limit piece 13 is opened at a position of the enclosure 31 corresponding to the limit piece 13. The limit piece 13 and the limit groove 32 can be plugged into and cooperate with each other to limit the pivoting of the knob 3. The knob 3 can move relative to the shell 1 between the position of rising to move the limit groove 32 away from the limit piece 13 and moving downward to plug the limit piece 13 with the limit groove 32. The ball 4 is provided on the limit piece 13 and a part of the ball 4 is exposed at the top of the limit piece 13 to roll in contact with the bottom wall of the enclosure 31.

[0036] Specifically, one side of the limiting groove 32 and the bottom wall of the enclosure 31 are transitioned through an inclined surface 33 .

[0037] Specifically, a positioning groove 14 adapted to the limiting member 13 is provided on the inner wall of the housing 1 at a position corresponding to the limiting groove 32 , the annular groove 12 extends to partially penetrate the positioning groove 14 , and the limiting member 13 is detachably fixed in the positioning groove 14 .

[0038] Specifically, a slot 131 is provided at the bottom of the limiting member 13 , and a support member 15 is partially inserted into the slot 131 . The portion of the support member 15 outside the slot 131 is locked with the housing 1 by screws, thereby locking the limiting member 13 with the housing 1 .

[0039] Specifically, a bead hole 132 with a small top opening and a large bottom opening is provided on the top of the limit member 13. The bead hole 132 is connected to the slot 131 and is used to accommodate the ball 4. After the support member 15 is partially inserted into the slot 131, the bottom opening of the bead hole 132 is covered to prevent the ball 4 from escaping from the bead hole 132 from the bottom opening of the bead hole 132.

[0040] Specifically, the reset mechanism includes a seat body 51, a moving member 52, a gear 53, a hydraulic rod 54 and a tension spring 55.

[0041] The gear 53 is coaxially connected to the knob 3 and can pivot along with the pivoting of the knob 3;

[0042] The moving member 52 is located in the seat body 51, and is connected to the gear 53 through a rack 56, and can perform linear reciprocating motion in the seat body 51 as the knob 3 pivots;

[0043] The hydraulic rod 54 is located on the seat body 51, and the telescopic end of the hydraulic rod 54 is fixedly connected to the moving member 52 and can be extended or retracted with the linear reciprocating motion of the moving member 52;

[0044] The tension spring 55 is sleeved on the hydraulic rod 54. One end of the top spring 58 is fixedly connected to the main body of the hydraulic rod 54, and the other end is connected to the telescopic end of the hydraulic rod 54, and is used to apply an elastic force in the direction of moving back to the telescopic end of the hydraulic rod 54, so as to cooperate with the transmission of the moving member 52 and the gear 53 to drive the knob 3 to slowly pivot in the direction of locking the connector 2.

[0045] Specifically, the knob 3 is provided with a rod portion 34 vertically inserted into the interior of the housing 1. The gear 53 is movably sleeved on the rod portion 34. The rod portion 34 is provided with a supporting portion 35. The bottom wall of the gear 53 contacts the top wall of the supporting portion 35. The bottom of the gear 53 is also provided with a pushing portion 531 for horizontally contacting the supporting portion 35. When the knob 3 pivots in the unlocking direction, the supporting portion 35 follows and pivots to contact the pushing portion 531 and drive the gear 53 to pivot. When the telescopic end of the hydraulic rod 54 moves in the retracting direction, the gear 53 follows and pushes the supporting portion 35 to pivot through the pushing portion 531 so that the knob 3 pivots in the unlocking direction.

[0046] A gasket 57 and a top spring 58 are also provided. The gasket 57 is movably sleeved on the rod portion 34. The bottom wall of the gasket 57 contacts the top of the gear 53. One end of the top spring 58 elastically abuts against the inner top wall of the housing 1, and the other end elastically abuts against the top wall of the gasket 57. The top spring 58 is used to apply an elastic force to the gear 53 in the direction of contacting the top wall of the supporting portion 35. This can avoid the problem that the gear 53 is forced to move upward along the rod portion 34 and is disengaged from the transmission connection of the teeth, and the pushing portion 531 and the supporting portion 35 are misaligned, resulting in the knob 3 being unable to automatically pivot slowly in the locking direction. The gasket 57 can also reduce the friction force when the knob 3 rotates and improve the smoothness of rotation.

[0047] Specifically, a receiving groove for placing the gasket 57 is also formed on the top of the gear 53.

[0048] The present utility model also proposes a telescopic door barrier, including a self-locking lock head. For the specific structure of the self-locking lock head, please refer to the above embodiments. Since this telescopic door barrier adopts all the technical solutions of all the above embodiments of the self-locking lock head, it at least has all the beneficial effects brought by the technical solutions of the above embodiments of the self-locking lock head, which will not be elaborated here one by one.

[0049] It should be noted that the present utility model is a structural improvement based on the prior art. For other structures of the telescopic door barrier that are not mentioned, reference can be made to the prior art, such as referring to the Chinese utility model patent with the name of a door barrier lock and a telescopic door barrier having the same, and the patent application number is CN202323133448.4. The specific structural principle thereof will not be elaborated here.

[0050] In the technical solution of the present utility model, balls for rolling cooperation with the bottom wall of the knob are arranged on the housing of the self-locking lock head of the retractable door railing. When the knob of the knob-type locking mechanism automatically pivots in the direction of locking the connector, the friction force received by the knob can be reduced through the rolling cooperation between the balls and the bottom wall of the knob, thereby improving the smoothness of the knob during pivoting, and effectively avoiding the problem that the knob jams or even stops pivoting due to large friction force during pivoting, resulting in the failure of automatic locking.

[0051] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A self-locking lock head, comprising a housing (1), a connector (2) pivotally mounted on the housing (1), a knob-type locking mechanism for locking the connector (2), and a reset mechanism, wherein the reset mechanism is used to apply a slowly pivoting action to a knob (3) of the knob-type locking mechanism in a direction for locking the connector (2), and characterized in that: A ball (4) for rolling contact with the bottom wall of the knob (3) is provided at a position of the housing (1) corresponding to the bottom of the knob (3).

2. The self-locking lock according to claim 1, characterized in that: The knob (3) is formed with an annular enclosure (31) on the peripheral wall thereof facing downwards, the housing (1) is provided with a receiving cavity (11) adapted to the knob (3) on the top, the receiving cavity (11) is formed with an annular groove (12) for inserting the enclosure (31) at a position corresponding to the enclosure (31), at least one ball (4) is arranged in the annular groove (12), and the ball (4) is in rolling contact with the bottom wall of the enclosure (31).

3. The self-locking lock according to claim 2, characterized in that: A limiting member (13) is provided in the annular groove (12); a limiting groove (32) for plugging with the limiting member (13) is provided at a position corresponding to the limiting member (13) on the enclosure (31); the limiting member (13) and the limiting groove (32) are plugged in and matched to limit the pivoting of the knob (3); the knob (3) can move relative to the housing (1) between a position in which the limiting groove (32) moves away from the limiting member (13) when it is raised and a position in which the limiting member (13) and the limiting groove (32) are plugged in when it is lowered; the ball (4) is provided on the limiting member (13) and a portion of the ball (4) is exposed at the top of the limiting member (13) to make rolling contact with the bottom wall of the enclosure (31).

4. The self-locking lock according to claim 3, characterized in that: One side of the limiting groove (32) and the bottom wall of the enclosure plate (31) are transitioned via an inclined surface (33).

5. The self-locking lock according to claim 3, characterized in that: A positioning groove (14) adapted to the positioning member (13) is provided at a position of the inner wall of the shell (1) corresponding to the limiting groove (32); the annular groove (12) extends to partially penetrate the positioning groove (14); and the limiting member (13) is detachably fixed in the positioning groove (14).

6. The self-locking lock according to claim 5, characterized in that: The bottom of the limiting member (13) is provided with a slot (131), and the support member (15) is partially inserted into the slot (131), and the portion of the support member (15) outside the slot (131) is locked with the housing (1) by means of screws, thereby locking the limiting member (13) and the housing (1).

7. The self-locking lock according to claim 6, characterized in that: A bead hole (132) having a small top opening and a large bottom opening is provided at the top of the limiting member (13); the bead hole (132) is connected to the slot (131) and is used to accommodate the ball (4); after the support member (15) is partially inserted into the slot (131), the bottom opening of the bead hole (132) is covered to prevent the ball (4) from escaping from the bead hole (132) through the bottom opening of the bead hole (132).

8. The self-locking lock according to claim 3, characterized in that: The reset mechanism comprises a seat body (51), a moving member (52), a gear (53), a hydraulic rod (54) and a tension spring (55). The gear (53) is coaxially connected to the knob (3) and can pivot along with the pivoting of the knob (3); The moving member (52) is located on the seat body (51), and the moving member (52) is connected to the gear (53) through a rack (56), and can perform linear reciprocating motion in the seat body (51) as the knob (3) pivots; The hydraulic rod (54) is located on the seat body (51), and the telescopic end of the hydraulic rod (54) is fixedly connected to the moving member (52) and can be extended or retracted with the linear reciprocating motion of the moving member (52); The tension spring (55) is sleeved on the hydraulic rod (54), one end of the top spring (58) is fixedly connected to the main body of the hydraulic rod (54), and the other end is connected to the telescopic end of the hydraulic rod (54), and is used to apply an elastic force to the telescopic end of the hydraulic rod (54) to move in the retraction direction, so as to cooperate with the transmission of the moving part (52) and the gear (53) to drive the knob (3) to slowly pivot in the direction of locking the connecting head (2).

9. The self-locking lock according to claim 8, characterized in that: The knob (3) is provided with a rod (34) vertically inserted into the housing (1); the gear (53) is movably sleeved on the rod (34); the rod (34) is provided with a support portion (35); the bottom wall of the gear (53) contacts the top wall of the support portion (35); the bottom of the gear (53) is also provided with a push portion (531) for horizontally contacting the support portion (35); when the knob (3) pivots in the unlocking direction, the support portion (35) pivots with it until it contacts the push portion (531) and drives the gear (53) to pivot; when the telescopic end of the hydraulic rod (54) moves in the retracting direction, the gear (53) pivots with it and pushes the support portion (35) to pivot through the push portion (531) so that the knob (3) pivots in the unlocking direction; A gasket (57) and a top spring (58) are also provided. The gasket (57) is movably sleeved on the rod portion (34). The bottom wall of the gasket (57) contacts the top of the gear (53). One end of the top spring (58) elastically abuts against the top wall inside the housing (1), and the other end elastically abuts against the top wall of the gasket (57). The top spring (58) is used to apply an elastic force to the gear (53) to move in a direction of contact with the top wall of the support portion (35).

10. A telescopic door fence, characterized in that: It comprises a self-locking lock head as claimed in any one of claims 1 to 9.

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