Self-locking base of telescopic protective door fence

Abstract

Compared with the prior art, the self-locking base of the telescopic protective door fence has the advantages that a self-locking function is added on the basis of the prior art, and a self-locking mechanism is triggered to lock a pivoting piece, so that automatic rolling of a curtain body is stopped, and the stopping can be relieved by pivoting towards the direction of unfolding the curtain body; the situation that the curtain body of the retractable door fence swings to hurt a human body in the automatic rolling process and hurt the human body or the curtain body is damaged due to the fact that the curtain body collides with hard objects and sharp objects in the swinging process is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of door rails, in particular to a self-locking base of a telescopic protective door rail. Background Art

[0002] Retractable gates are mostly used indoors or in courtyards. Retractable gates are used to separate indoor spaces or courtyard spaces so as to form different temporary activity spaces indoors or in the courtyard for infants and young children to move around. Specifically, the retractable gate includes a lock, a base, a rotating drum and a curtain body. The rotating drum can be pivotally installed between the lock and the base, and one end of the curtain body is arranged on the rotating drum. A torsion spring is arranged in the rotating drum. The rotational elastic force of the torsion spring can cause the rotating drum to rotate in one direction around its own axis, so that the rotating drum can retract the curtain body. When the rotating drum pivots in the direction of unfolding the curtain body, it can drive the torsion spring to compress and accumulate force. When the rotating drum pivots in the direction of rolling up the curtain body, the torsion spring is decompressed and releases the elastic force to accelerate the pivoting speed of the rotating drum. When in use, it is mainly achieved by grasping the end of the curtain body and pulling it, so as to unfold the curtain body to an appropriate length and then fix the end of the curtain body.

[0003] There are some shortcomings in the above-mentioned prior art: when the curtain body is unfolded and the end is not fixed, loosening the end of the curtain body will cause the curtain body to automatically roll up, and due to the influence of the release of the elastic force of the torsion spring, the curtain body automatically rolls up at a faster speed, causing the curtain body to swing during the automatic rolling process. Especially when the free end of the curtain body is connected to a hard object, it is easy to hit the human body and cause injury to the human body when swinging, or the curtain body collides with hard or sharp objects during the swinging process, causing damage to the curtain body. Utility Model Content

[0004] The main purpose of the utility model is to provide a self-locking base for a telescopic protective door railing, aiming to solve the deficiencies mentioned in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model proposes a self-locking base of a telescopic protective door fence, comprising:

[0006] seat body;

[0007] A pivoting member, the pivoting member can be pivotally mounted on the base body and can pivot relative to the base body toward the direction of unfolding the curtain body or toward the direction of rolling up the curtain body;

[0008] A self-locking mechanism, which is arranged on the base body and is used to lock the pivoting member when the pivoting member pivots toward the rolling curtain body and reaches or exceeds a predetermined pivoting speed, the base is provided with a receiving cavity with an open top, the self-locking mechanism is arranged in the receiving cavity, and the bottom of the pivoting member can be pivotally mounted on the receiving cavity and close the top opening of the receiving cavity;

[0009] The self-locking mechanism comprises a plurality of slots annularly spaced in the accommodating cavity, a counterweight, a claw and an elastic member;

[0010] The counterweight block can be pivotally mounted in the accommodating cavity and is coaxial with the pivoting member;

[0011] The claw can be pivotally mounted on the bottom wall of the pivoting member at a position corresponding to one side of the counterweight block, and can swing relative to the pivoting member between a position in which it cooperates with the clamping slot to limit the pivoting member from pivoting toward the rolling curtain body and a position in which it abuts against one end of the counterweight block. The pivoting member is also provided with a push portion for abutting against the other end of the counterweight block.

[0012] The elastic member is used to apply elastic force to the claw to move in a direction against the counterweight block;

[0013] When the pivoting member pivots in the direction of unfolding the curtain body, the counterweight block is pushed by the pushing portion to pivot synchronously;

[0014] When the pivoting member slowly and evenly pivots toward the rolling curtain body, the clamping claw can push the counterweight block to pivot synchronously without exceeding the load of the elastic member;

[0015] When the pivoting member pivots toward the rolling curtain body and reaches or exceeds a predetermined pivoting speed, the centrifugal force generated exceeds the load of the elastic component, so that the claw is insufficient to push the counterweight block to pivot synchronously. Instead, due to the obstruction of the counterweight block, the claw swings to cooperate with the slot, thereby stopping the pivoting of the pivoting member.

[0016] Preferably, the accommodating cavity is circular, and a circular plate having a shape matching that of the accommodating cavity is provided at the bottom of the pivoting member.

[0017] Preferably, the middle portion of the elastic member abuts against the outer wall of the claw, and the two ends are respectively connected to the free end of the claw and the side of the push portion away from the counterweight block.

[0018] Preferably, a connecting groove with a pin portion is formed at the free end of the claw, and one end of the elastic member is inserted into the connecting groove and then sleeved on the pin portion to achieve connection with the free end of the claw, and the other end of the elastic member is maintained against the push portion.

[0019] Preferably, the pivoting member is further formed with a limiting block, and the claw can swing relative to the pivoting member between a position in contact with the limiting block and a position away from the limiting block.

[0020] Preferably, the elastic member is a long metal spring.

[0021] Preferably, the push portion and the pivot member are an integrally formed structure or a detachable connection structure. When the push block is a detachable connection structure, the push block is locked by a screw or fixed to the bottom wall of the pivot member by a snap-fit ​​structure.

[0022] Preferably, a plurality of ratchet teeth are formed at intervals in a ring shape in the accommodation cavity, and the space between two adjacent ratchet teeth is the card slot; alternatively, a ring-shaped member for fixing in the accommodation cavity is further provided, and the card slot is located in the inner ring of the ring-shaped member.

[0023] Preferably, the ring-shaped member is a sheet made of metal.

[0024] In the technical solution of the present utility model, a pivot member fixedly connected to the rotating cylinder is pivotally provided on the seat body of the self-locking base, and a self-locking mechanism is provided on the self-locking base. When assembling with the telescopic protective railing, the pivot member is fixedly connected to the lower end of the rotating cylinder of the telescopic protective railing. When the rotating cylinder pivots towards the direction of retracting the rolling curtain body, the torsion spring inside the rotating cylinder is released from compression to release elastic force, so that the rotating cylinder and the pivot member reach or exceed a predetermined pivoting speed, and the centrifugal force generated exceeds the load of the elastic member, making the claw insufficient to push the counterweight to pivot synchronously. Instead, due to the blocking of the counterweight, the claw swings to cooperate with the card slot, thereby stopping the pivoting of the pivot member. Compared with the traditional one, the present utility model adds a self-locking function on the basis of the existing technology, triggers the self-locking mechanism to lock the pivot member, thereby stopping the automatic retraction of the curtain body. Pivoting towards the direction of unfolding the curtain body can release the stop, effectively avoiding the situation that the curtain body of the telescopic railing swings and hits a person during the automatic retraction process, causing injury to the person, or the curtain body collides with hard objects or sharp objects during the swinging process, resulting in damage to the curtain body. Description of the Drawings

[0025] Figure 1 is a three-dimensional view of the present utility model;

[0026] Figure 2 is a first cross-sectional view of the present utility model;

[0027] Figure 3 is a second cross-sectional view of the present utility model;

[0028] Figure 4 is an assembly drawing of the present utility model and the telescopic protective railing. Detailed Description of the Embodiment

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0030] It should be noted that if there are directional indications involved in the embodiments of the present utility model (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then such directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture (as shown in the attached drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0031] In addition, if there are descriptions involving "first" or "second" in the embodiments of the present utility model, then such descriptions of "first" or "second" are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly specifying 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 ability of those of ordinary skill in the art to implement. 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 scope of protection required by the present utility model.

[0032] The present utility model provides a self-locking base for a telescopic protective railing.

[0033] In the embodiments of the present utility model, as Figures 1 to 4 shown, the self-locking base of the telescopic protective railing includes a base body 1, a pivoting member 2, and a self-locking mechanism.

[0034] Among them, the pivoting member 2 is pivotally installed on the base body 1 and can pivot relative to the base body 1 in the direction of unfolding the curtain body or in the direction of retracting the curtain body; the self-locking mechanism is arranged on the base body 1 and is used to lock the pivoting member 2 when the pivoting member 2 pivots in the direction of retracting the curtain body and reaches or exceeds a predetermined pivoting speed. The base body is provided with a receiving cavity with an open top, the self-locking mechanism is arranged in the receiving cavity, and the bottom of the pivoting member 2 is pivotally installed in the receiving cavity and closes the top opening of the receiving cavity; the self-locking mechanism includes a plurality of card slots 101, a counterweight 102, a claw 103, and an elastic member 104 that are annularly and spacedly arranged in the receiving cavity; the counterweight 102 is pivotally installed in the receiving cavity and is coaxial with the pivoting member 2; the claw 103 is pivotally installed at a position on the bottom wall of the pivoting member 2 corresponding to one side of the counterweight 102 and can swing relative to the pivoting member 2 between a position where it cooperates with the card slot 101 to limit the pivoting member 2 from pivoting in the direction of retracting the curtain body and a position where it abuts against one end of the counterweight 102. The pivoting member 2 is further provided with a pushing portion 105 for abutting against the other end of the counterweight 102; the elastic member 104 is used to apply an elastic force to the claw 103 in the direction of moving towards abutting against the counterweight 102.

[0035] As Figure 2As shown, when the pivot member 2 pivots in the direction of deploying the curtain body, the counterweight 102 is pushed by the pushing portion 105 to pivot synchronously (the claw 103 can move away from the counterweight 102 as the pivot member 2 pivots, so the claw 103 and the counterweight 102 remain relatively stationary);

[0036] As Figure 2 shown, when the pivot member 2 pivots slowly and uniformly in the direction of retracting the curtain body, the claw 103 can push the counterweight 102 to pivot synchronously without exceeding the load of the elastic member 104;

[0037] As Figure 3 shown, when the pivot member 2 pivots in the direction of retracting the curtain body and reaches or exceeds a predetermined pivoting speed, the centrifugal force generated exceeds the load of the elastic member 104, making it insufficient for the claw 103 to push the counterweight 102 to pivot synchronously. Instead, due to the blocking of the counterweight 102, the claw 103 swings to cooperate with the card slot 101, thereby aborting the pivoting of the pivot member 2.

[0038] Specifically, the receiving cavity is circular, and the bottom of the pivot member 2 is provided with a circular plate 21 adapted to the shape of the receiving cavity.

[0039] Specifically, the middle of the elastic member 104 abuts against the outer wall of the claw 103, and the two ends are respectively connected to the free end of the claw 103 and the side of the pushing portion 105 away from the counterweight 102.

[0040] Specifically, the free end of the claw 103 is provided with a connecting groove 106 having a pin portion 107. One end of the elastic member 104 extends into the connecting groove 106 and is sleeved on the pin portion 107 to realize the connection with the free end of the claw 103, and the other end of the elastic member 104 remains in contact with the pushing portion. Specifically, the pivot member 2 is further formed with a limiting block 108, and the claw 103 can swing relative to the pivot member 2 between positions in contact with and away from the limiting block 108 to prevent the claw 103 from swinging excessively through the limiting block 108.

[0041] Specifically, the elastic member 104 is a long metal spring piece.

[0042] Specifically, the pushing portion and the pivot member 2 are of an integrally formed structure or a detachable connection structure. When it is a detachable connection structure, the push block is locked by screws or fixed to the bottom wall of the pivot member 2 through a snap structure. The snap structure can refer to the prior art, and its specific structural principle will not be elaborated here.

[0043] Specifically, in an embodiment, the receiving cavity is formed with a plurality of ratchet teeth at annular intervals, and the interval space between two adjacent ratchet teeth is the card slot 101.

[0044] In another embodiment, an annular component (not shown) for fixing in the accommodating cavity is further provided, and the clamping groove 101 is located at the inner ring of the annular component.

[0045] Specifically, the annular component is a sheet made of metal.

[0046] The technical solution of the utility model is to provide a pivoting member fixedly connected to the rotating drum on the seat body of the self-locking base, and to provide a self-locking mechanism on the self-locking base. When assembled with the telescopic protective door rail, the pivoting member is fixedly connected to the lower end of the rotating drum of the telescopic protective door rail. When the rotating drum pivots toward the direction of the rolled-up curtain body, the torsion spring inside the rotating drum is decompressed and releases the elastic force, so that the rotating drum and the pivoting member reach or exceed a predetermined pivoting speed. The centrifugal force generated exceeds the load of the elastic component, so that the claw is insufficient to push the counterweight block to make a synchronous pivot. On the contrary, due to the obstruction of the counterweight block, the claw swings to cooperate with the slot, thereby stopping the pivoting of the pivoting member. Compared with the traditional one, the utility model adds a self-locking function on the basis of the existing technology. The self-locking mechanism is triggered to lock the pivot part, thereby suspending the automatic retraction of the curtain body. The suspension can be released by pivoting in the direction of unfolding the curtain body, which effectively prevents the curtain body of the telescopic door fence from swinging and hitting the human body and causing injuries during the automatic retraction process, or the curtain body from colliding with hard or sharp objects during the swinging process, causing damage to the curtain body.

[0047] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A self-locking base for a telescopic protective door fence, characterized in that: include: base(1); A pivoting member (2), the pivoting member (2) being pivotally mounted on the base (1) and being pivotable relative to the base (1) in a direction of unfolding the curtain body or in a direction of rolling up the curtain body; a self-locking mechanism, the self-locking mechanism being arranged on the base (1) and being used for locking the pivoting member (2) when the pivoting member (2) pivots in the direction of the rolling curtain body and reaches or exceeds a predetermined pivoting speed, the base being provided with a receiving cavity with an open top, the self-locking mechanism being arranged in the receiving cavity, the bottom of the pivoting member (2) being pivotally mounted on the receiving cavity and closing the top opening of the receiving cavity; The self-locking mechanism comprises a plurality of slots (101) annularly spaced apart in the accommodating cavity, a counterweight (102), a claw (103) and an elastic member (104); The counterweight block (102) can be pivotally mounted in the accommodating cavity and is coaxial with the pivot member (2); The clamping claw (103) can be pivotally mounted on the bottom wall of the pivoting member (2) at a position corresponding to one side of the counterweight (102), and can swing relative to the pivoting member (2) between a position where it cooperates with the clamping groove (101) to limit the pivoting member (2) from pivoting in the direction of the rolling curtain body and a position where it abuts against one end of the counterweight (102). The pivoting member (2) is also provided with a pushing portion (105) for abutting against the other end of the counterweight (102); The elastic member (104) is used to apply an elastic force to the claw (103) to move in a direction against the counterweight block (102); When the pivoting member (2) pivots in the direction of unfolding the curtain body, the counterweight block (102) is pushed by the pushing portion (105) to pivot synchronously; When the pivoting member (2) slowly and evenly pivots in the direction of the rolling curtain body, the claw (103) can push the counterweight block (102) to pivot synchronously without exceeding the load of the elastic member (104); When the pivoting member (2) pivots toward the rolling curtain body and reaches or exceeds a predetermined pivoting speed, the centrifugal force generated exceeds the load of the elastic member (104), so that the claw (103) is insufficient to push the counterweight block (102) to pivot synchronously. Instead, due to the obstruction of the counterweight block (102), the claw (103) swings to cooperate with the clamping groove (101), thereby stopping the pivoting of the pivoting member (2).

2. The self-locking base of the telescopic protective door fence according to claim 1, characterized in that: The accommodating cavity is circular, and a circular plate (21) having a shape matching that of the accommodating cavity is provided at the bottom of the pivoting member (2).

3. The self-locking base of the telescopic protective door fence according to claim 1, characterized in that: The middle part of the elastic member (104) abuts against the outer wall of the claw (103), and the two ends are respectively connected to the free end of the claw (103) and the side of the push portion (105) away from the counterweight (102).

4. The self-locking base of the telescopic protective door fence according to claim 3, characterized in that: The free end of the clamping claw (103) is provided with a connecting groove (106) having a pin portion (107); one end of the elastic member (104) extends into the connecting groove (106) and is sleeved on the pin portion (107) to achieve connection with the free end of the clamping claw (103); the other end of the elastic member (104) is maintained in contact with the pushing portion.

5. The self-locking base of the telescopic protective door fence according to claim 1, characterized in that: The pivoting member (2) is also formed with a limit block (108), and the claw (103) can swing relative to the pivoting member (2) between a position of contact with the limit block (108) and a position of being away from the limit block (108).

6. The self-locking base of the telescopic protective door fence according to claim 1, characterized in that: The elastic component (104) is a long strip of metal spring.

7. The self-locking base of the telescopic protective door fence according to claim 1, characterized in that: The push portion and the pivot member (2) are an integrally formed structure or a detachably connected structure. When the push portion and the pivot member (2) are a detachably connected structure, the push block is locked by screws or fixed to the bottom wall of the pivot member (2) by a snap-fit ​​structure.

8. The self-locking base of the telescopic protective door fence according to claim 1, characterized in that: The accommodating cavity is formed with a plurality of ratchet teeth at intervals in an annular shape, and the interval space between two adjacent ratchet teeth is the clamping groove (101).

9. The self-locking base of the telescopic protective door fence according to claim 1, characterized in that: An annular component for fixing in the accommodating cavity is also provided, and the clamping groove (101) is located at the inner ring of the annular component.

10. The self-locking base of the telescopic protective door fence according to claim 9, characterized in that: The annular component is a sheet body made of metal.

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