Telescopic belt capable of being locked

Abstract

The utility model discloses a lockable telescopic belt. The lockable telescopic belt comprises a shell, a rotating drum, a belt drawing device, a rotating device, a locking device and a speed reducing device, two ends of the rotary drum are rotationally connected with the shell, and a telescopic belt is wound in the middle and pulled through an inlet / outlet in the side surface of the shell; and a coil spring of the rotating device drives the rotating drum to retract automatically. The locking device achieves two-way control through a rocker button. Locking teeth of the locking end are meshed with oblique teeth of the upper rotary disc to prevent rotation, and locking is relieved after the unlocking end is pressed. The speed reducer is arranged between the upper rotating disc and the shell and used for reducing the retraction speed of the telescopic belt. Through the locking / unlocking integrated design and deceleration buffering of the rocker button, the problems that a traditional telescopic belt is prone to being out of control and rebounding and inconvenient to operate are solved, the telescopic belt is particularly suitable for scenes such as guardrail isolation belts, and safety and use convenience are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of guardrail isolation belts, and in particular to a lockable telescopic belt. Background Technology

[0002] In the application scenarios of guardrail barriers, retractable belts are a common isolation tool widely used for temporarily separating areas and guiding pedestrian or vehicular traffic. Traditional retractable belt devices typically use a simple coil spring structure to achieve automatic retraction, but in practical use, the following problems exist: First, the retractable belt lacks an effective locking mechanism after being pulled out, making it prone to accidental retraction due to external force or the coil spring, affecting the stability of the isolation effect; second, existing locking structures mostly use a single button control, which is not convenient to operate and has insufficient locking reliability, easily leading to wear or failure after frequent use. Furthermore, some devices lack a buffer mechanism when the retractable belt is quickly retracted, which may cause equipment damage or safety hazards due to inertia. The technical solution proposed in this patent aims to solve these technical problems and meet practical application needs. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a lockable telescopic belt that can be controlled bidirectionally (locked at one end and unlocked at the other end) via a rocker button, while integrating a deceleration device to buffer the impact of retraction, thereby improving the safety and convenience of using the guardrail isolation belt.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A lockable telescopic belt, including

[0006] The housing has a rotating cylinder inside, with both ends of the rotating cylinder rotatably connected to the upper and lower sides of the housing. The upper part of the rotating cylinder has an upper rotating disk, and the lower part of the rotating cylinder has a lower rotating disk.

[0007] A belt-pulling device is disposed between the upper turntable and the lower turntable, and includes a telescopic belt wound in the middle of the drum. The side of the housing is provided with an inlet and outlet for accommodating the telescopic belt.

[0008] A rotary device is disposed between the lower turntable and the housing, and includes a coil spring wound around the lower part of the drum;

[0009] A locking device is located on the side of the housing near the upper turntable. The outer periphery of the upper turntable is provided with oblique teeth in the direction of the extension belt. The locking device includes a rocker button. The rocker button is provided with a locking end and an unlocking end. One side of the locking end is provided with locking teeth, which are used to lock the oblique teeth of the upper turntable from rotating.

[0010] A speed reduction device is disposed between the upper turntable and the housing, and is used to reduce the speed of the rotating drum when the telescopic belt rotates.

[0011] A lockable telescopic belt according to an embodiment of the present utility model has at least the following beneficial effects:

[0012] (1) In terms of reliable locking and unlocking, the helical teeth on the outer periphery of the upper turntable and the locking teeth on the locking end of the rocker button ensure stable locking after the telescopic belt is pulled out, preventing accidental retraction. Pressing the unlocking end of the rocker button causes the locking end to tilt up, causing the locking teeth and helical teeth to disengage, so that the telescopic belt automatically retracts under the action of the coil spring. The operation is simple and efficient.

[0013] (2) Regarding the impact of buffering retraction, the deceleration device effectively reduces the inertial impact when the telescopic belt is rapidly retracted, thus avoiding equipment damage or personnel injury.

[0014] (3) In terms of structural design, the rotating drum, belt pulling device, slewing device and locking device are integrated into the shell, with a reasonable and compact layout, reducing space occupation;

[0015] (4) In terms of applicability, the safety and convenience of using the lockable telescopic belt have been improved, and it can be widely used in shopping malls, airports, stations and other scenarios that require temporary isolation.

[0016] According to some embodiments of the present invention, the housing is provided with a mounting port for installing a locking device. The mounting port is provided with an upper mounting shell and a corresponding lower mounting shell. The upper mounting shell is provided with an upper shaft hole, and the lower mounting shell is provided with a corresponding lower shaft hole. The rocker button is provided with rotating shafts on both sides that are rotatably connected to the upper shaft hole and the lower shaft hole, respectively.

[0017] The advantages are: the rocker button is fixedly mounted at the mounting port via an upper and lower mounting shell, which facilitates the assembly and maintenance of the locking device. The rocker button is rotatably connected to the housing via a pivot, making operation smoother and more reliable, while also improving the overall durability of the structure.

[0018] According to some embodiments of the present invention, a reset spring is provided at the pivot of the rocker button.

[0019] The advantages are: the return spring design enables an automatic reset function, ensuring the rocker button remains in the locked position when no external force is applied, guaranteeing immediate locking of the telescopic belt when pulling stops; when the telescopic belt needs to be retracted, simply pressing the unlocking end allows for quick release, greatly simplifying the operation process. This automatic reset mechanism not only improves ease of use but also prevents accidental unlocking due to human error, enhancing the device's safety and reliability. Simultaneously, the elasticity of the return spring provides a better button feel and extends the button mechanism's lifespan.

[0020] According to some embodiments of the present invention, the rocker button has a front limit block and a rear limit block at its unlocking end and locking end, respectively, and the front limit block and the rear limit block are used to limit the rocker button from being pressed excessively.

[0021] The advantages are: setting front and rear limit blocks can effectively prevent the button from being pressed excessively, avoid damage to the locking mechanism due to excessive force, and improve the reliability and safety of the device.

[0022] According to some embodiments of the present invention, the deceleration device includes an upper partition plate, a deceleration disk, and a deceleration ring. The upper partition plate is fixedly disposed above the upper turntable and connected to the housing. The upper partition plate has a through hole through which the end of the rotating cylinder passes. The deceleration disk is connected to the end of the rotating cylinder through the through hole. The deceleration ring is sleeved on the outside of the deceleration disk. The inner side of the deceleration ring is provided with ratchet teeth. The outer side of the deceleration disk is hinged with a pawl that engages unidirectionally with the ratchet teeth. The outer side of the deceleration ring is provided with a counterweight.

[0023] The advantages are: the deceleration device achieves unidirectional deceleration through the cooperation of ratchet and pawl, and the setting of counterweight enhances the deceleration effect, making the retraction process of the telescopic belt smoother and reducing impact and noise.

[0024] According to some embodiments of the present invention, the lower part of the through hole of the upper partition plate is provided with a first sleeve, and the first sleeve is provided with an upper bearing that is rotatably connected to the end of the rotating cylinder.

[0025] The advantage is that the upper partition has a bearing structure at the bottom of the through hole. This design effectively reduces the frictional resistance when the drum rotates, making the stretch belt pull smoother. At the same time, it reduces the wear of parts and improves the service life of the overall device.

[0026] According to some embodiments of the present invention, a lower partition plate connected to the housing is provided below the lower turntable, and the lower partition plate is provided with a second sleeve, the second sleeve being provided with a lower bearing rotatably connected to the end of the rotating drum.

[0027] The advantage is that a lower partition plate connected to the housing is provided below the lower turntable, and the drum is supported by a lower bearing. This structure enhances the stability of the drum, ensures that it maintains stable operation during long-term use, and improves the reliability of the device.

[0028] According to some embodiments of this utility model, a limiting strip is provided at one outer end of the telescopic belt.

[0029] The advantage is that setting a limit strip can effectively prevent the telescopic belt from retracting completely into the housing, making it easy to pull out quickly when used next time, while avoiding the risk of the telescopic belt falling off or getting stuck.

[0030] According to some embodiments of the present invention, a limiting sleeve is provided on the side of the housing facing away from the limiting strip, and the limiting sleeve is used to cooperate with the limiting strip of another lockable telescopic belt.

[0031] The advantage is that by quickly inserting the limiting sleeve into the limiting strip of the adjacent telescopic belt, multiple telescopic belts can be used in series, expanding the coverage of the isolation area, while maintaining the connection stability between each unit, which is suitable for the temporary fencing arrangement of large venues.

[0032] According to some embodiments of the present invention, it further includes a support column and a base, wherein the support column is connected to the bottom surface of the housing, and the base is connected to the bottom of the support column.

[0033] The advantages are: the support column and the base form a stable vertical support structure, ensuring that the telescopic belt is always in a suspended and stretched state, avoiding friction and wear with the ground; the base can be increased with overall counterweight or fixed with bolts to adapt to different ground conditions and improve the wind resistance and durability of the device when used outdoors.

[0034] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of an embodiment of the present utility model;

[0037] Figure 2 for Figure 1 Schematic diagram of the middle shell;

[0038] Figure 3 for Figure 2 A cross-sectional schematic diagram;

[0039] Figure 4 for Figure 2 Internal diagram;

[0040] Figure 5 for Figure 4 Enlarged diagram of point A in the middle.

[0041] Reference numerals: housing 100, rotating drum 110, upper turntable 120, lower turntable 130, telescopic belt 140, inlet / outlet 150, coil spring 160, helical tooth 170, rocker button 180, locking end 190, unlocking end 200, locking tooth 210, mounting port 220, upper mounting shell 230, lower mounting shell 240, rotating shaft 250, return spring 260, front limit block 270, rear limit block 280, upper partition 290, reduction disc 300, reduction ring 310, ratchet 320, pawl 330, counterweight 340, first sleeve 350, upper bearing 360, lower partition 370, second sleeve 380, lower bearing 390, limit clip 400, limit sleeve 410, support column 420, base 430. Detailed Implementation

[0042] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0043] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] The following is for reference. Figures 1-5A lockable telescopic strap is described in detail with reference to a specific embodiment. It is to be understood that the following description is merely illustrative and not intended to limit the scope of the invention.

[0047] like Figures 1-5 As shown, the lockable telescopic belt mainly consists of a housing 100, a rotating drum 110, a belt-pulling device, a rotating device, a locking device, and a speed-reducing device. The housing 100 contains a rotatable rotating drum 110, with both ends of the drum 110 rotatably connected to the upper and lower sides of the housing 100, respectively. The upper part of the rotating drum 110 has an upper turntable 120, and the lower part has a lower turntable 130, forming a stable support structure. A belt-pulling device is provided between the upper and lower turntables 130, including a telescopic belt 140 wound around the middle of the rotating drum 110. The housing 100 has an inlet / outlet 150 on its side for the telescopic belt 140 to enter and exit, facilitating the pulling and pulling of the telescopic belt 140.

[0048] Specifically, such as Figures 3-5 As shown, the rotary device is located between the lower turntable 130 and the housing 100, and mainly consists of a coil spring 160 wound around the lower part of the drum 110, providing power for the automatic retraction of the telescopic belt 140. The locking device is located on the side of the housing 100 near the upper turntable 120. The outer periphery of the upper turntable 120 has helical teeth 170 along the direction of the telescopic belt 140's extension, which work in conjunction with the rocker button 180 of the locking device. The locking device adopts an innovative rocker button 180 design, divided into a locking end 190 and an unlocking end 200. The locking end 190 has locking teeth 210 that engage with the helical teeth 170 of the upper turntable 120, ensuring that the telescopic belt 140 is locked after being pulled out. When unlocking is required, pressing the unlocking end 200 of the rocker button 180 causes the locking end 190 to tilt upwards, disengaging the locking teeth 210 from the helical teeth 170, allowing the telescopic belt 140 to automatically retract under the action of the coil spring 160.

[0049] To optimize the user experience, the device also includes a deceleration device located between the upper turntable 120 and the housing 100. This device buffers and decelerates the rotating drum 110 when the telescopic belt 140 retracts, effectively reducing the impact force during retraction. The specific structure of the deceleration device includes an upper partition 290 fixed to the housing 100, a deceleration disc 300 connected to the rotating drum 110, and a deceleration ring 310 sleeved on the outside of the deceleration disc 300. The inner side of the deceleration ring 310 has ratchet teeth 320, which cooperate with the pawl 330 on the deceleration disc 300 to achieve unidirectional deceleration. An outer counterweight 340 enhances the deceleration effect. It should be noted that the deceleration device does not decelerate when the telescopic belt 140 is pulled out; it only decelerates when the telescopic belt 140 retracts. Its working principle is similar to that of the locking device where the locking teeth 210 and the helical teeth 170 cooperate.

[0050] like Figure 5As shown, the rocker button 180 is installed at the mounting port 220 of the housing 100. An upper mounting shell 230 and a lower mounting shell 240 are installed at the mounting port 220 to secure the rocker button 180, facilitating assembly and maintenance. It should be noted that a return spring 260 is provided at the pivot 250 to ensure that the button automatically returns to the locked position when no force is applied. To further improve reliability, limit blocks are provided at both ends of the rocker button 180 to prevent damage caused by excessive pressing. Figure 3 As shown, the two ends of the rotating drum 110 are connected to the housing 100 through bearings. The lower part of the through hole of the upper partition plate 290 is provided with a first sleeve 350 to install the upper bearing 360. The lower partition plate 370 is provided below the lower turntable 130. The lower partition plate 370 is provided with a second sleeve 380 to install the lower bearing 390, so as to ensure that the rotating drum 110 rotates smoothly.

[0051] It is worth mentioning that a limiting strip 400 is provided at one outer end of the telescopic belt 140. This limiting strip 400 can effectively prevent the telescopic belt 140 from being completely retracted into the housing 100, which facilitates quick pull-out next time and avoids the risk of falling off or getting stuck. A corresponding limiting sleeve 410 is provided on the side of the housing 100 opposite to the limiting strip 400, which can be quickly inserted and cooperate with another limiting strip 400 that can lock the telescopic belt 140, so that multiple telescopic belts 140 can be used in series. This not only expands the coverage area of ​​the isolation area, but also maintains the stability of the connection between units, which is particularly suitable for the temporary fencing of large venues. In addition, it also includes a support column 420 and a base 430. The support column 420 is fixedly connected to the bottom surface of the housing 100, and the base 430 is connected to the bottom of the support column 420, forming a stable vertical support structure. This structure can keep the telescopic belt 140 in a suspended and stretched state to avoid ground wear, and the counterweight design of the base 430 or bolt fixation can adapt to different ground conditions, significantly improving the wind resistance and long-term durability of the device in outdoor environments.

[0052] When setting up an isolation area, the user simply holds the limiting strip 400 at the outer end of the telescopic belt 140 with one hand and pulls it outward smoothly with appropriate force. At this time, the rotating drum 110 rotates within the housing 100, and the upper turntable 120 rotates accordingly. The helical teeth 170 on its outer circumference automatically engage with the locking teeth 210 on the locking end 190 of the rocker button 180. During this process, the return spring 260 maintains appropriate pressure on the rocker button 180, ensuring reliable engagement between the locking teeth 210 and the helical teeth 170. When the telescopic belt 140 is pulled to the desired length, the user releases their hand, and the device automatically remains locked without further operation. When it is necessary to retract the telescopic belt 140, the user gently presses the unlocking end 200 of the rocker button 180 with their thumb. At this time, the locking teeth 210 disengage from the helical teeth 170, and the restoring force of the coil spring 160 causes the rotating drum 110 to begin rotating. The deceleration device then comes into play: the deceleration disc 300 rotates with the drum 110, and the pawl 330 on it intermittently engages with the ratchet 320 on the inner side of the deceleration ring 310. Combined with the inertia of the outer counterweight 340, the rotational speed is effectively buffered. This process allows the telescopic belt 140 to retract at a smooth and controllable speed, avoiding potential safety hazards caused by rapid rebound.

[0053] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A lockable retractable leash, characterized in that, include: The housing (100) has a rotating cylinder (110) inside. The two ends of the rotating cylinder (110) are rotatably connected to the upper and lower sides inside the housing (100). The upper part of the rotating cylinder (110) is provided with an upper turntable (120), and the lower part of the rotating cylinder (110) is provided with a lower turntable (130). A belt-pulling device is provided between the upper turntable (120) and the lower turntable (130), including a telescopic belt (140) wound in the middle of the drum (110), and the side of the housing (100) is provided with an inlet and outlet (150) for accommodating the telescopic belt (140). A rotary device is disposed between the lower turntable (130) and the housing (100), including a coil spring (160) wound around the lower part of the drum (110). A locking device is located on the side of the housing (100) near the upper turntable (120). The outer periphery of the upper turntable (120) is provided with oblique teeth (170) in the direction of the extension belt (140) being pulled out. The locking device includes a rocker button (180). The rocker button (180) is provided with a locking end (190) and an unlocking end (200). The locking end (190) is provided with a locking tooth (210) facing inward on one side. The locking tooth (210) is used to lock the rotation of the oblique teeth (170) of the upper turntable (120). A speed reduction device is disposed between the upper turntable (120) and the housing (100) for reducing the speed of the drum (110) when the telescopic belt (140) rotates.

2. A lockable webbing according to claim 1, wherein, The housing (100) is provided with a mounting port (220) for installing a locking device. The mounting port (220) is provided with an upper mounting shell (230) and a corresponding lower mounting shell (240). The upper mounting shell (230) is provided with an upper shaft hole, and the lower mounting shell (240) is provided with a corresponding lower shaft hole. The rocker button (180) is provided with a rotating shaft (250) on both sides, which is rotatably connected to the upper shaft hole and the lower shaft hole.

3. A lockable webbing according to claim 2, wherein, A return spring (260) is provided at the pivot (250) of the rocker button (180).

4. The lockable webbing of claim 1, wherein, The rocker button (180) has a front limit block (270) and a rear limit block (280) on its unlocking end (200) and locking end (190), respectively. The front limit block (270) and the rear limit block (280) are used to limit the rocker button (180) from being pressed excessively.

5. The lockable webbing of claim 1, wherein, The speed reduction device comprises an upper partition plate (290), a speed reduction disc (300) and a speed reduction ring (310), the upper partition plate (290) is fixedly arranged above the upper turntable (120) and connected with the shell (100), the upper partition plate (290) is provided with a through hole through which the end of the rotating drum (110) passes, the speed reduction disc (300) is connected with the end of the rotating drum (110) through the through hole, the speed reduction ring (310) is sleeved outside the speed reduction disc (300), the inner side of the speed reduction ring (310) is provided with a ratchet (320), the outer side of the speed reduction disc (300) is hingedly connected with a pawl (330) which is unidirectionally clamped with the ratchet (320), and the outer side of the speed reduction ring (310) is provided with a counterweight (340).

6. A lockable webbing according to claim 5, wherein, The lower part of the through hole of the upper partition plate (290) is provided with a first sleeve opening (350), and the first sleeve opening (350) is rotatably connected with the end of the rotating drum (110) through an upper bearing (360).

7. The lockable webbing of claim 1, wherein, The lower turntable (130) is provided below with a lower partition plate (370) connected with the shell (100), the lower partition plate (370) is provided with a second sleeve opening (380), and the second sleeve opening (380) is rotatably connected with the end of the rotating drum (110) through a lower bearing (390).

8. The lockable webbing of claim 1, wherein, One end of the outer side of the telescopic belt (140) is provided with a limiting clamping strip (400).

9. A lockable webbing according to claim 8, wherein, The side of the shell away from the limiting clamping strip (400) is provided with a limiting clamping sleeve (410), and the limiting clamping sleeve is used for matched connection with the limiting clamping strip (400) of another lockable telescopic belt.

10. The lockable webbing of claim 1, wherein, Further comprising a supporting column (420) and a base (430), the supporting column (420) is connected with the bottom surface of the shell (100), and the base (430) is connected with the bottom of the supporting column (420).

Images