Self-locking base of retractable door fence
By designing a self-locking base in the telescopic door rail, using the self-locking mechanism of ratchet grooves, pawls and elastic members, locking the pivot member and stopping the automatic winding of the curtain, the damage caused by the swing of the curtain is solved, and the safe and stable winding of the curtain is achieved.
Patent Information
- Application Number
- CN202421931673.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-09
AI Technical Summary
The existing telescopic door rails are easily swung during the automatic winding of the curtain, which may cause damage to the human body or damage to the curtain.
A self-locking base is designed, including a seat body, a pivot member and a self-locking mechanism. The pivot member is connected to the rotary drum, and the self-locking mechanism is composed of a ratchet groove, a pawl and an elastic member. When the drum reaches a predetermined speed, the centrifugal force exceeds the load of the elastic member, so that the pawl cooperates with the ratchet groove, locks the pivot member, and stops the automatic winding of the curtain.
It effectively avoids the curtain body swinging during the automatic winding process, prevents damage to the human body or hard objects, and prevents damage to the curtain body.
Smart Images
Figure CN222909889U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of door barriers, in particular to a self-locking base of a telescopic door barrier. 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 door barrier, aiming to solve the deficiencies mentioned in the above-mentioned background technology.
[0005] To achieve the above object, the utility model provides a self-locking base for a telescopic door barrier, comprising:
[0006] seat body;
[0007] A pivoting member, the pivoting member is used to be connected to the lower end of the rotating drum of the telescopic protective door, the pivoting member can be pivotally mounted on the base body and can be pivoted relative to the base body in the direction of unfolding the curtain body or in the direction of rolling up the curtain body;
[0008] Self-locking mechanism, wherein the seat 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 is pivotally mounted in the receiving cavity and closes the receiving cavity; the self-locking mechanism includes a ratchet groove, a pawl and an elastic member arranged in the receiving cavity, the pawl is pivotally mounted on the bottom wall of the pivoting member corresponding to the position of the ratchet groove, and the pawl can swing relative to the pivoting member between a position cooperating with the ratchet groove and a position away from it; one end of the elastic member is fixed and the other end is connected to the free end of the pawl. When the pivoting member pivots towards the direction of winding the curtain body and reaches or exceeds a predetermined pivoting speed, the centrifugal force generated exceeds the load of the elastic member, causing the pawl to swing to cooperate with the ratchet groove to limit the pivoting of the pivoting member towards the direction of winding the curtain body, and at the same time forcing a part of the elastic member to deform and remain deformed and generate an elastic force for applying a swing force to the pawl in the direction away from the ratchet wheel groove.
[0009] Preferably, the receiving cavity is circular, and the bottom of the pivoting member is provided with a circular plate adapted to the shape of the receiving cavity.
[0010] Preferably, a pair of the pawls are pivotally mounted on the bottom wall of the pivoting member.
[0011] Preferably, an avoidance groove is formed at the position between the two ends of the pawl, a clamping seat is arranged on the bottom wall of the pivoting member corresponding to the avoidance groove, one end of the elastic member is connected to the clamping seat, and the other end is connected to the free end of the pawl.
[0012] Preferably, a pressing part is further arranged on the bottom wall of the pivoting member corresponding to the avoidance groove, the clamping seat is L-shaped, and two sides of the elastic member are respectively in contact with the clamping seat and the pressing part to fix the elastic member.
[0013] Preferably, a clamping slot for the end of the elastic member to be inserted and move is provided at the free end of the pawl.
[0014] Preferably, the elastic member is a strip-shaped metal spring piece.
[0015] Preferably, a ring-shaped member is further provided, the ring-shaped member is fixed in the receiving cavity, and the inner ring of the ring-shaped member is the ratchet groove.
[0016] Preferably, the ring-shaped member is fixed in the receiving cavity by screw locking or by a snap structure, or a plurality of limiting strips for inserting the ring-shaped member are annularly and spaced in the receiving cavity to limit the ring-shaped member through the plurality of limiting strips to prevent the ring-shaped member from pivoting relative to the receiving cavity.
[0017] Preferably, the ring-shaped member is made of metal or plastic.
[0018] The technical solution of the utility model is that the seat body of the self-locking base is pivotally provided with a pivoting member fixedly connected to the rotating drum, and a self-locking mechanism is provided on the self-locking base. When assembled with the telescopic door fence, the pivoting member is fixedly connected to the lower end of the rotating drum of the telescopic door fence. When the rotating drum is pivoted in the direction of the rolled-up curtain body, the torsion spring inside the rotating drum is released from compression and releases elastic force, so that the rotating drum and the pivoting member reach or exceed a predetermined speed, and the centrifugal force generated exceeds the load of the elastic member, so that the ratchet pawl swings to cooperate with the ratchet groove to limit the pivoting member from pivoting in the direction of the rolled-up curtain body, and at the same time forces the elastic member to be localized. The part undergoes and maintains deformation and generates an elastic force for applying a swing to the pawl in the direction away from the ratchet wheel groove, thereby locking the pivot part. Compared with the traditional one, the utility model adds a self-locking function on the basis of the prior art, triggering the self-locking mechanism to lock the pivot part, thereby suspending the automatic retraction of the curtain body, and the suspension can be released by pivoting in the direction of unfolding the curtain body, effectively preventing the curtain body of the telescopic door fence from swinging and hitting the human body during the automatic retraction process, causing injuries to the human body, or the curtain body colliding with hard or sharp objects during the swinging process, causing damage to the curtain body. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a three-dimensional diagram of the utility model;
[0020] Figure 2 This is the first cross-sectional view of the utility model;
[0021] Figure 3 This is the second cross-sectional view of the utility model;
[0022] Figure 4 It is an assembly drawing of the utility model and the telescopic door railing. DETAILED DESCRIPTION
[0023] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0025] In addition, if the embodiments of the present utility model involve descriptions such as "first" or "second", etc., the descriptions of "first" or "second", etc. 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 may 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 scope of protection required by the present utility model.
[0026] The present utility model provides a self-locking base for a retractable door barrier.
[0027] In an embodiment of the present utility model, as Figures 1 to 4 shown, the self-locking base of the retractable door barrier includes a base body 1, a pivoting member 2, and a self-locking mechanism.
[0028] Among them, the pivoting member 2 is used to connect to the lower end of the rotating cylinder of the retractable protective door barrier. The pivoting member 2 is pivotally mounted 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 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 mounted in the receiving cavity and closes the receiving cavity; the self-locking mechanism includes a ratchet groove 101, a pawl 102, and an elastic member 103 arranged in the receiving cavity. The pawl 102 is pivotally mounted on the bottom wall of the pivoting member 2 corresponding to the position of the ratchet groove 101, and the pawl 102 can swing relative to the pivoting member 2 between a position where it cooperates with the ratchet groove 101 and a position away from it; one end of the elastic member 103 is fixed, and the other end is connected to the free end of the pawl 102. When the pivoting member 2 pivots in the direction of retracting the curtain body at or exceeding a predetermined pivoting speed, the centrifugal force generated exceeds the load of the elastic member 103, causing the pawl 102 to swing to cooperate with the ratchet groove 101 to limit the pivoting of the pivoting member 2 in the direction of retracting the curtain body, and at the same time forcing a part of the elastic member 103 to deform and remain deformed and generate an elastic force for applying a swing force to the pawl 102 in the direction away from the ratchet wheel groove.
[0029] When the pivoting member 2 slowly and uniformly pivots in the direction of retracting the curtain body, no centrifugal force is generated or a relatively small centrifugal force is generated, which is not sufficient to exceed the load of the elastic member 103 and is not sufficient to cause the pawl 102 to swing, so that the curtain body can be smoothly retracted.
[0030] When the pivot member 2 pivots in the direction of unfolding the curtain body, the pawl 102 follows and disengages from the cooperation with the ratchet groove 101, enabling the elastic member 103 to reset and relieve deformation. While resetting, the elastic force is released to force the pawl 102 to swing away from the ratchet groove 101 until the elastic force generated by the elastic member 103 disappears, thereby achieving the reset of the pawl 102.
[0031] Specifically, the accommodating cavity is circular, and a circular plate 21 adapted to the shape of the accommodating cavity is provided at the bottom of the pivot member 2.
[0032] Specifically, a pair of the pawls 102 are pivotally mounted on the bottom wall of the pivot member 2 to increase the locking strength.
[0033] Specifically, an avoidance groove 104 is formed at the position between the two ends of the pawl 102. A clamping seat 105 is provided on the bottom wall of the pivot member 2 corresponding to the avoidance groove 104. One end of the elastic member 103 is connected to the clamping seat 105, and the other end is connected to the free end of the pawl 102.
[0034] Specifically, a pressing portion 106 is further provided on the bottom wall of the pivot member 2 corresponding to the avoidance groove 104. The clamping seat 105 is L-shaped, and two sides of the elastic member 103 are in contact with the clamping seat 105 and the pressing portion 106 respectively to fix the elastic member 103.
[0035] Specifically, a clamping slot into which the end portion of the elastic member 103 can be movably inserted may be provided at the free end of the pawl 102.
[0036] Specifically, the elastic member 103 is a long strip-shaped metal spring piece.
[0037] Specifically, a ring member 107 is further provided. The ring member 107 is fixed in the accommodating cavity, and the inner ring of the ring member 107 is the ratchet groove 101. It is preferably made of metal.
[0038] Specifically, the ring member 107 is fixed in the accommodating cavity by screw locking or by a snap structure. Alternatively, a plurality of limiting strips 11 for inserting into the ring member 107 are annularly and spacedly provided in the accommodating cavity to prevent the ring member 107 from pivoting relative to the accommodating cavity through the plurality of limiting strips 11, so as to avoid the situation that the pawl 102 fails to cooperate and cannot lock the pivot member 2.
[0039] Specifically, the ring member 107 is a metal product or a plastic product.
[0040] The technical solution of the utility model is that the seat body of the self-locking base is pivotally provided with a pivoting member fixedly connected to the rotating drum, and a self-locking mechanism is provided on the self-locking base. When assembled with the telescopic door fence, the pivoting member is fixedly connected to the lower end of the rotating drum of the telescopic door fence. When the rotating drum is pivoted in the direction of the rolled-up curtain body, the torsion spring inside the rotating drum is released from compression and releases elastic force, so that the rotating drum and the pivoting member reach or exceed a predetermined speed, and the centrifugal force generated exceeds the load of the elastic member, so that the ratchet pawl swings to cooperate with the ratchet groove to limit the pivoting member from pivoting in the direction of the rolled-up curtain body, and at the same time forces the elastic member to be localized. The part undergoes and maintains deformation and generates an elastic force for applying a swing to the pawl in the direction away from the ratchet wheel groove, thereby locking the pivot part. Compared with the traditional one, the utility model adds a self-locking function on the basis of the prior art, triggering the self-locking mechanism to lock the pivot part, thereby suspending the automatic retraction of the curtain body, and the suspension can be released by pivoting in the direction of unfolding the curtain body, effectively preventing the curtain body of the telescopic door fence from swinging and hitting the human body during the automatic retraction process, causing injuries to the human body, or the curtain body colliding with hard or sharp objects during the swinging process, causing damage to the curtain body.
[0041] 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 door, characterized in that: include: base(1); A pivoting member (2), the pivoting member (2) being used to be connected to the lower end of the rotating drum of the telescopic protective door barrier, the pivoting member (2) being pivotally mounted on the base body (1) and being pivotable relative to the base body (1) in a direction of unfolding the curtain body or in a direction of rolling up the curtain body; The self-locking mechanism comprises a seat body 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 receiving cavity; the self-locking mechanism comprises a ratchet groove (101), a pawl (102) and an elastic member (103) arranged in the receiving cavity, the pawl (102) being pivotally mounted on the bottom wall of the pivoting member (2) at a position corresponding to the ratchet groove (101), and the pawl (102) being able to move relative to the pivoting member (2) in a position cooperating with or away from the ratchet groove (101). The elastic member (103) is fixed at one end and connected to the free end of the pawl (102) at the other end. When the pivoting member (2) pivots in the direction of the rolling curtain body and reaches or exceeds a predetermined pivoting speed, the centrifugal force generated exceeds the load of the elastic member (103), causing the pawl (102) to swing to cooperate with the ratchet groove (101) to limit the pivoting member (2) from pivoting in the direction of the rolling curtain body, and at the same time forcing a part of the elastic member (103) to undergo and maintain deformation and generate an elastic force for applying a swing to the pawl (102) in a direction away from the ratchet groove.
2. The self-locking base of the telescopic door barrier 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 door barrier according to claim 1, characterized in that: A pair of ratchet pawls (102) are pivotally mounted on the bottom wall of the pivot member (2).
4. The self-locking base of the telescopic door barrier according to claim 1, characterized in that: An escape groove (104) is provided between the two ends of the ratchet (102); a clamping seat (105) is provided at a position of the bottom wall of the pivot member (2) corresponding to the escape groove (104); one end of the elastic member (103) is connected to the clamping seat (105), and the other end is connected to the free end of the ratchet (102).
5. The self-locking base of the telescopic door barrier according to claim 4, characterized in that: A pressing portion (106) is also provided at a position of the bottom wall of the pivoting member (2) corresponding to the avoidance groove (104); the clamping seat (105) is L-shaped; two sides of the elastic member (103) are respectively in contact with the clamping seat (105) and the pressing portion (106) to fix the elastic member (103).
6. The self-locking base of the telescopic door barrier according to claim 4, characterized in that: The free end of the pawl (102) may be provided with a slot into which the end of the elastic member (103) can be movably inserted.
7. The self-locking base of the telescopic door barrier according to claim 5, characterized in that: The elastic component (103) is a long strip of metal spring.
8. The self-locking base of the telescopic door barrier according to claim 1, characterized in that: An annular component (107) is also provided, and the annular component (107) is fixed in the accommodating cavity, and the inner ring of the annular component (107) is the ratchet groove (101).
9. The self-locking base of the telescopic door barrier according to claim 8, characterized in that: The annular component (107) is fixed to the accommodating cavity by means of screw locking or a snap-fit structure, or a plurality of limit bars (11) for plugging into the annular component (107) are provided at annular intervals in the accommodating cavity, so that the annular component (107) is restricted by the plurality of limit bars (11) to prevent the annular component (107) from pivoting relative to the accommodating cavity.
10. The self-locking base of the telescopic door barrier according to claim 8, characterized in that: The annular component (107) is made of metal or plastic.