Limiting structure of retractable door fence

Abstract

The utility model discloses a limiting structure of a retractable door fence, which is characterized in that a limiting piece is arranged on a connecting rod of the retractable door fence so as to reduce the interval space between the connecting rod and a rolled curtain body, and when a rotating drum of the retractable door fence rotates towards the rolling direction of the curtain body until the curtain body is completely rolled, the limiting piece is arranged on the connecting rod. The rotary drum is limited in the mode that the limiting piece abuts against the handle arranged on the curtain body, so that the rotary drum is prevented from continuing to rotate in the curtain body rolling direction after the curtain body is completely rolled, and compared with a traditional mode, when the interval space between the rolled curtain body and the connecting rod is too large due to the fact that the length of the curtain body is insufficient, the rotary drum is prevented from rotating in the rolling direction. When the curtain body is long enough, the limiting piece can be taken down, the rotary drum is limited in the mode that the connecting rod abuts against the handle directly, the overall structure is simple, and operation is convenient. The problem that due to the fact that the interval space is too large, the rotary drum can still rotate towards the rolling direction of the curtain body after the curtain body is completely rolled is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of door bars, in particular to a limit structure for a retractable door bar lock. Background Technique

[0002] Most retractable door bars are used indoors or in the courtyard and are used to separate indoor or courtyard spaces, so as to form different temporary activity spaces indoors or in the courtyard for infants and young children to move. Specifically, the retractable door bar mainly includes a connecting rod, an upper seat and a lower seat respectively fixed at both ends of the connecting rod, and a rolling curtain assembly. The rolling curtain assembly mainly includes a rotating cylinder, a curtain body and a torsion spring. The rotating cylinder is rotatably installed between the upper seat and the lower seat. One end of the curtain body is connected to the rotating cylinder, and a torsion spring can apply an elastic force to the rotating cylinder in the direction of retracting the rolling curtain body. A handle is provided at the other end of the curtain body. After the curtain body is retracted, the connecting rod mainly abuts against the handle to prevent the rotating cylinder from rotating in the direction of retracting the rolling curtain body, avoiding the consumption of the torsion of the torsion spring, so that the torsion spring can still maintain a certain torsion when the curtain body is in the retracted state. The length of the curtain body can be changed, while the position of the connecting rod remains unchanged. Therefore, when the length of the curtain body is short, the diameter of the retracted curtain body is also small, resulting in too large a gap space between the connecting rod and the retracted curtain body. The handle can pass through the gap space and cannot restrict the rotating cylinder, resulting in continuous consumption of the elastic force of the torsion spring. The torsion spring cannot maintain the required torsion range after the curtain body is retracted, nor can the torsion be adjusted.

[0003] Therefore, the applicant has improved the above-mentioned disadvantages on the basis of the prior art and proposed a limit structure for a retractable door bar, aiming to solve the problem that when the gap space between the connecting rod and the retracted curtain body is too large, the rotating cylinder cannot be restricted from rotating in the direction of retracting the rolling curtain body by the abutment of the connecting rod and the handle. Content of the Utility Model

[0004] The main purpose of the utility model is to propose a limit structure for a retractable door bar, aiming to solve the deficiencies mentioned in the above background technique.

[0005] To achieve the above object, the utility model proposes a limit structure for a retractable door bar, which includes a connecting rod, an upper seat and a lower seat respectively fixed at both ends of the connecting rod, and a rolling curtain assembly rotatably installed between the upper seat and the lower seat. The rolling curtain assembly includes a rotating cylinder, a curtain body and a torsion spring. One end of the curtain body is connected to the rotating cylinder, and the other end is provided with a handle. The rotating cylinder is rotatably installed between the upper seat and the lower seat, and a torsion spring applies an elastic force to the rotating cylinder in the direction of retracting the rolling curtain body. The connecting rod is provided with a limiting member for abutting against the handle, so as to limit the rotating cylinder from rotating in the direction of retracting the rolling curtain body through the abutting cooperation of the limiting member and the handle.

[0006] Preferably, the limiting member is rotatably installed on the connecting rod and has a locking structure for locking the limiting member.

[0007] Preferably, the limiting member includes a first sleeve and a second sleeve. The first sleeve is sleeved on the connecting rod and locked by a screw. The second sleeve is movably sleeved on the connecting rod and can pivot relative to the connecting rod and can also move along the connecting rod between the position sleeved on the first sleeve and the position away from it. A baffle is provided on the outer wall of the second sleeve, and the baffle can swing between a position close to or away from the curtain body as the second sleeve pivots.

[0008] Preferably, the outer wall of the first sleeve is provided with teeth, and the inner wall of the second sleeve is provided with a tooth groove adapted to the teeth. After the second sleeve is sleeved on the first sleeve, the pivoting action of the second sleeve can be restricted by the cooperation of the teeth and the tooth groove.

[0009] Preferably, the locking structure includes a locking bolt. After the second sleeve is sleeved on the first sleeve, the second sleeve can be locked by the locking bolt.

[0010] Preferably, a limiting portion for abutting against the bottom wall of the first sleeve is formed by extending the bottom of the second sleeve. When the second sleeve moves upward to be sleeved on the first sleeve, the upward movement of the second sleeve is restricted by the abutment of the limiting portion against the bottom wall of the first sleeve, and the downward movement of the second sleeve is restricted by screwing the locking bolt to a position corresponding to the lower part of the limiting portion on the connecting rod, thereby locking the second sleeve.

[0011] Preferably, the upper seat includes a housing, a connecting head, a locking member and a first top spring. The connecting head is pivotally installed on the housing. The locking member is movably installed on the housing and can move vertically back and forth relative to the housing, so as to be clamped with the connecting head to restrict the pivoting action of the connecting head or move away from the connecting head to release the restriction. The first top spring is used to apply an elastic force to the locking member in the direction of moving towards the connecting head for clamping.

[0012] Preferably, a positioning structure is further included. After the locking member moves away from the connecting head, it can pivot relative to the housing. The positioning structure includes a positioning portion connected to the locking member and a positioning hole provided on the housing. The positioning hole includes a vertically extending vertical section and a horizontally extending horizontal section. The upper end of the vertical section is connected to one end of the horizontal section. The positioning portion is inserted into the positioning hole and can move to the upper end of the vertical section and be opposite to the horizontal section as the locking member moves upward, and then enter the horizontal section as the locking member pivots to restrict the downward movement of the locking member.

[0013] Preferably, a driving portion fixedly connected to the locking member is provided outside the housing, and the locking member can be driven to perform the movement through the driving portion.

[0014] Preferably, a pivot member is pivotally mounted inside the housing. The lower end of the pivot member passes through the bottom of the housing and is exposed outside, and is fixedly connected to the connector. A plug portion is provided at the top of the pivot member, and a slot adapted to the plug portion is provided at the position corresponding to the plug portion at the bottom of the locking member. The plug portion can be inserted into or withdrawn from the slot with the vertical reciprocating movement of the locking member to limit or release the pivotal movement of the connector.

[0015] In the technical solution of the present utility model, a limiting member is provided on the connecting rod of the telescopic door fence to reduce the spacing between the connecting rod and the curtain body after the winding is completed. When the rotating cylinder of the telescopic door fence rotates towards the direction of winding the curtain body until the curtain body is completely wound, the rotating cylinder is restricted by the way that the limiting member abuts against the handle provided on the curtain body, so as to prevent the rotating cylinder from continuing to rotate towards the direction of winding the curtain body after the curtain body is completely wound. Compared with the traditional one, when the length of the curtain body is insufficient and the spacing between the wound curtain body and the connecting rod is too large, the present utility model can restrict the rotating cylinder through the abutting cooperation between the limiting member and the handle, and when the length of the curtain body is sufficient, the limiting member can be removed, and the rotating cylinder can be restricted directly by the way that the connecting rod abuts against the handle. The overall structure is simple, effectively avoiding the problem that the rotating cylinder can still rotate towards the direction of winding the curtain body after the curtain body is completely wound due to the too large spacing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of the present utility model;

[0017] Figure 2 is an assembly schematic diagram of the first ferrule and the second ferrule;

[0018] Figure 3 is a schematic diagram of the first ferrule and the second ferrule respectively sleeved on the connecting rod;

[0019] Figure 4 is a perspective view of the first ferrule and the second ferrule;

[0020] Figure 5 is a first-angle exploded view of the upper seat;

[0021] Figure 6 is a second-angle exploded view of the upper seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Hereinafter, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Apparently, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the 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.

[0023] 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.

[0024] 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 understood 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 fact that those of ordinary skill in the art can implement it. 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.

[0025] The present utility model provides a limiting structure for a retractable door barrier.

[0026] In the embodiments of the present utility model, as Figures 1 to 6 shown, the limiting structure of the retractable door barrier includes a connecting rod 1, an upper seat 2 and a lower seat 3 respectively fixed at both ends of the connecting rod 1, and a rolling curtain assembly rotatably installed between the upper seat 2 and the lower seat 3. The rolling curtain assembly includes a rotating cylinder, a curtain body 4, and a torsion spring. One end of the curtain body 4 is connected to the rotating cylinder, and the other end is provided with a handle 5. The rotating cylinder is rotatably installed between the upper seat 2 and the lower seat 3, and a elastic force for rotating the rotating cylinder in the direction of retracting the curtain body 4 is applied to the rotating cylinder through the torsion spring. The connecting rod 1 is provided with a limiting member for abutting against the handle 5, so as to limit the rotation of the rotating cylinder in the direction of retracting the curtain body 4 through the abutting cooperation between the limiting member and the handle 5.

[0027] Specifically, a support rod extending along the height direction of the curtain body 4 is further provided at the end of the curtain body 4. The handle 5 is connected to the support rod, and the limiting member can also limit the rotation of the rotating cylinder in the direction of retracting the curtain body 4 by abutting against the support rod.

[0028] Specifically, the limiting member is fixedly installed on the connecting rod 1, or the limiting member is detachably installed on the connecting rod 1, or the limiting member is rotatably installed on the connecting rod 1, and there is a locking structure for locking the limiting member.

[0029] Specifically, the limiting member includes a first ferrule 61 and a second ferrule 62. The first ferrule 61 is sleeved on the connecting rod 1 and locked by screws. The second ferrule 62 is movably sleeved on the connecting rod 1 and can pivot relative to the connecting rod 1 and can also move along the connecting rod 1 between the position sleeved on the first ferrule 61 and the position far away from it. A baffle 63 is provided on the outer wall of the second ferrule 62, and the baffle 63 can swing between the positions close to or far away from the curtain body 4 as the second ferrule 62 pivots. By the way that the baffle 63 abuts against the handle 5 of the rolling curtain assembly, the curtain body 4 after being wound up is fixed, so that the rotating cylinder can no longer rotate in the direction of winding up the curtain body 4, thereby solving the above problem of the consumed torque. On the other hand, the second ferrule 62 can also be pivoted according to the size of the interval space to adjust the distance between the baffle 63 and the curtain body 4 until the baffle 63 can abut against the handle 5.

[0030] Specifically, a tooth 64 is provided on the outer wall of the first ferrule 61, and a tooth groove 65 adapted to the tooth 64 is provided on the inner wall of the second ferrule 62. After the second ferrule 62 is sleeved on the first ferrule 61, the pivoting action of the second ferrule 62 can be restricted by the cooperation of the tooth 64 and the tooth groove 65.

[0031] Specifically, the locking structure includes a locking bolt 66. After the second ferrule 62 is sleeved on the first ferrule 61, the second ferrule 62 can be locked by the locking bolt 66.

[0032] Specifically, a limiting portion 67 for abutting against the bottom wall of the first ferrule 61 is formed by extending the bottom of the second ferrule 62. After the second ferrule 62 moves upward to be sleeved on the first ferrule 61, the upward movement of the second ferrule 62 is restricted by the abutment of the limiting portion 67 against the bottom wall of the first ferrule 61, and the second ferrule 62 is locked by screwing the locking bolt 66 to a position corresponding to the lower part of the limiting portion 67 on the connecting rod 1 to restrict the downward movement of the second ferrule 62. It can be understood that the second ferrule 62 can also move in the opposite direction, that is, move downward to be sleeved on the first ferrule 61. Correspondingly, the limiting portion 67 is provided on the top wall of the second ferrule 62 for abutting against the top wall of the first ferrule 61, and the locking bolt 66 is screwed to a position corresponding to the upper part of the limiting portion 67 on the connecting rod 1.

[0033] Specifically, the upper seat 2 includes a housing 21, a connecting head 22, a locking member 23 and a first top spring 24. The connecting head 22 is pivotally installed on the housing 21. The locking member 23 is movably installed in the housing 21 and can make a vertical reciprocating movement relative to the housing 21, so as to engage with the connecting head 22 to restrict the pivoting action of the connecting head 22 or move away from the connecting head 22 to release the restriction. The first top spring 24 is used to apply an elastic force to the locking member 23 in the direction of engaging with the connecting head 22.

[0034] Specifically, it further includes a positioning structure. After the locking member 23 moves away from the connector 22, it can pivot relative to the housing 21. The positioning structure includes a positioning portion 231 connected to the locking member 23 and a positioning hole 100 provided in the housing 21. The positioning hole 100 includes a vertically extending vertical section 101 and a horizontally extending horizontal section 102. The upper end of the vertical section 101 is connected to one end of the horizontal section 102. The positioning portion 231 is inserted into the positioning hole 100, and can move to the upper end of the vertical section 101 and face the horizontal section 102 as the locking member 23 moves upward, and then enter the horizontal section 102 with the pivoting action of the locking member 23 to restrict the locking member 23 from moving downward. Reversely pivoting the locking member 23 to drive the positioning portion 231 to exit the horizontal section 102 and enter the vertical section 101 can release the restriction on the locking member 23. It can be understood that when the locking member 23 is clamped with the connector 22, the positioning portion 231 is at the lower end position of the vertical section 101. At this time, the positioning portion 231 is restricted by the vertical section 101 and can only move upward or downward, thus avoiding the situation where the connector 22 drives the locking member 23 to pivot.

[0035] Specifically, a driving portion 25 fixedly connected to the locking member 23 is provided outside the housing 21, and the locking member 23 can be driven to perform the movement through the driving portion 25. The positioning portion 231 is in a strip shape, with one end fixedly connected to the outer wall of the locking member 23 and the other end passing through the positioning hole 100 and fixedly connected to the driving portion 25. Specifically, in this embodiment, the number of the driving portions 25 is two. During operation, the locking member 23 can be driven to move upward or pivot by respectively pressing the two driving portions 25 with the thumb and index finger to form a clamping direction, which is convenient to operate and conforms to ergonomics.

[0036] The surface of the driving portion 25 is provided with an anti-slip structure. The friction force on the surface of the driving portion 25 is increased through the anti-slip structure, and the anti-slip structure can be structures such as stripes, concave positions or particles.

[0037] Specifically, a pivoting member 26 is pivotally installed inside the housing 21. The lower end of the pivoting member 26 passes through the bottom of the housing 21 and is exposed outside and fixedly connected to the connector 22. A plugging portion 261 is provided at the top of the pivoting member 26, and a slot 232 adapted to the plugging portion 261 is provided at the corresponding position of the bottom of the locking member 23. The plugging portion 261 can be inserted into or withdrawn from the slot 232 with the vertical reciprocating movement of the locking member 23 to restrict or release the pivoting action of the connector 22.

[0038] Specifically, the pivoting member 26 is pivotally installed in the housing 21 through a bearing.

[0039] A plurality of the plugging portions 261 are annularly and spacedly provided at the top of the pivoting member 26.

[0040] Specifically, the lock has a plurality of convex portions provided at a circular interval, and the interval space between two adjacent convex portions is the slot 232.

[0041] Specifically, there is also a plug board 27 for fixing at the position to be installed. One side of the housing 21 is provided with a jack 211 into which the plug board 27 can be inserted from bottom to top. One side of the jack 211 close to the position to be installed is partially open. The housing 21 can be quickly assembled or disassembled at the position to be installed through the cooperation of the jack 211 and the plug board 27. A locking key 28 is also movably arranged in the housing 21. The locking key 28 can move relative to the housing 21 between a position where it is inserted into the plug board 27 to restrict the plug board 27 from withdrawing from the jack 211 and a position away from the plug board 27 to release the restriction. There is also a second top spring 29, and the second top spring 29 is used to apply an elastic force to the locking key 28 in the direction of moving towards the plug board 27 for insertion.

[0042] Specifically, a part of the locking key 28 extends out of the housing 21 to form a driving end. The driving end can be used to drive the locking key 28 to move away from the plug board 27 against the elastic force applied by the second top spring 29, thereby releasing the restriction on the plug board 27. It can be understood that the housing 21 is open at the position corresponding to the movement track of the driving end to avoid affecting the movement of the driving end.

[0043] Specifically, a sliding seat 7 is also movably sleeved on the connecting rod 1. The sliding seat 7 can be quickly fixed at the position to be installed or quickly disassembled through a quick-release structure. The quick-release structure can refer to the connection structure between the housing 21 and the position to be installed above, and the specific structural principle thereof will not be elaborated here.

[0044] The technical solution of the present utility model provides a limiting member on the connecting rod of the telescopic door railing to reduce the interval space between the connecting rod and the curtain body after being completely wound up. When the rotating cylinder of the telescopic door railing rotates towards the direction of winding up the curtain body until the curtain body is completely wound up, the rotating cylinder is restricted by the way that the limiting member abuts against the handle provided on the curtain body, so as to prevent the rotating cylinder from continuing to rotate towards the direction of winding up the curtain body after completely winding up the curtain body. Compared with the traditional one, when the length of the curtain body is insufficient and the interval space between the wound-up curtain body and the connecting rod is too large, the present utility model can restrict the rotating cylinder through the abutting cooperation between the limiting member and the handle. When the length of the curtain body is sufficient, the limiting member can be removed, and the rotating cylinder can be directly restricted by the way that the connecting rod abuts against the handle. The overall structure is simple, effectively avoiding the problem that the rotating cylinder can still rotate towards the direction of winding up the curtain body after completely winding up the curtain body due to the too large interval space.

[0045] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. 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 any direct / indirect application in other related technical fields shall be included within the patent protection scope of the present utility model.

Claims

1. A limiting structure for a telescopic door barrier, comprising a connecting rod (1), an upper seat (2) and a lower seat (3) respectively fixed to both ends of the connecting rod (1), and a rolling curtain assembly rotatably mounted between the upper seat (2) and the lower seat (3), the rolling curtain assembly comprising a rotating drum, a curtain body (4), and a torsion spring, one end of the curtain body (4) being connected to the rotating drum, and the other end being provided with a handle (5), the rotating drum being rotatably mounted between the upper seat (2) and the lower seat (3) and applying an elastic force to the rotating drum to rotate in a direction of rolling up the curtain body (4) through the torsion spring, characterized in that: The connecting rod (1) is provided with a limiting member for abutting against the handle (5), so that the limiting member and the handle (5) are matched to limit the rotation of the rotating drum in the direction of the rolling curtain body (4).

2. The position limiting structure of the telescopic door barrier according to claim 1, characterized in that: The limiting member is rotatably mounted on the connecting rod (1), and has a locking structure for locking the limiting member.

3. The position limiting structure of the telescopic door barrier according to claim 2, characterized in that: The limiting member comprises a first clamping sleeve (61) and a second clamping sleeve (62); the first clamping sleeve (61) is sleeved on the connecting rod (1) and locked by a screw; the second clamping sleeve (62) is movably sleeved on the connecting rod (1) and can pivot relative to the connecting rod (1) and can move along the connecting rod (1) between a position sleeved on the first clamping sleeve (61) and a position away from the first clamping sleeve (61); a baffle (63) is provided on the outer wall of the second clamping sleeve (62); the baffle (63) can swing between a position close to or away from the curtain body (4) as the second clamping sleeve (62) pivots.

4. The position limiting structure of the telescopic door barrier according to claim 3, characterized in that: The first clamping sleeve (61) has an outer wall provided with a latching tooth (64), and the second clamping sleeve (62) has an inner wall provided with a tooth groove (65) adapted to the latching tooth (64). After the second clamping sleeve (62) is sleeved on the first clamping sleeve (61), the second clamping sleeve (62) can be restricted from pivoting by the engagement of the latching tooth (64) and the tooth groove (65).

5. The position limiting structure of the telescopic door barrier according to claim 2, characterized in that: The locking structure comprises a locking bolt (66), and after the second clamping sleeve (62) is sleeved on the first clamping sleeve (61), the second clamping sleeve (62) can be locked by the locking bolt (66).

6. The position limiting structure of the telescopic door barrier according to claim 5, characterized in that: The bottom of the second ferrule (62) is extended to form a limiting portion (67) for abutting against the bottom wall of the first ferrule (61). After the second ferrule (62) moves upward to be sleeved on the first ferrule (61), the limiting portion (67) abuts against the bottom wall of the first ferrule (61) to limit the second ferrule (62) from continuing to move upward, and the locking bolt (66) is screwed to the position below the corresponding limiting portion (67) of the connecting rod (1) to limit the second ferrule (62) from moving downward, thereby locking the second ferrule (62).

7. The position limiting structure of the telescopic door barrier according to claim 1, characterized in that: The upper seat (2) comprises a shell (21), a connecting head (22), a locking member (23) and a first top spring (24); the connecting head (22) can be pivotally mounted on the shell (21); the locking member (23) is movably mounted on the shell (21) and can perform vertical reciprocating motion relative to the shell (21), thereby engaging with the connecting head (22) to restrict the connecting head (22) from pivoting or moving away from the connecting head (22) to release the restriction; the first top spring (24) is used to apply an elastic force to the locking member (23) to move in the direction of engaging with the connecting head (22).

8. The position limiting structure of the telescopic door barrier according to claim 7, characterized in that: The invention also comprises a positioning structure, wherein the locking member (23) can pivot relative to the housing (21) after moving in a direction away from the connecting head (22), the positioning structure comprising a positioning portion (231) connected to the locking member (23) and a positioning hole (100) provided in the housing (21), the positioning hole (100) comprising a vertical section (101) extending vertically and a horizontal section (102) extending horizontally, the upper end of the vertical section (101) being connected to one end of the horizontal section (102), the positioning portion (231) being inserted into the positioning hole (100), and being able to move to the upper end of the vertical section (101) and facing the horizontal section (102) as the locking member (23) moves upward, and then enters the horizontal section (102) as the locking member (23) pivots to restrict the locking member (23) from moving downward.

9. The position limiting structure of the telescopic door barrier according to claim 7, characterized in that: A driving portion (25) fixedly connected to the locking member (23) is provided outside the housing (21), and the locking member (23) can be driven by the driving portion (25) to perform the movement.

10. The position limiting structure of the telescopic door barrier according to claim 7, characterized in that: A pivot member (26) is pivotally mounted inside the housing (21); the lower end of the pivot member (26) passes through the bottom of the housing (21) and is exposed to the outside and fixedly connected to the connector (22); a plug-in portion (261) is provided at the top of the pivot member (26); a slot (232) adapted to the plug-in portion (261) is provided at the bottom of the locking member (23) at a position corresponding to the plug-in portion (261); the plug-in portion (261) can be inserted into or withdrawn from the slot (232) as the locking member (23) reciprocates in the vertical direction to restrict the connector (22) from pivoting or release the restriction.

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