One-handed operable safety belt

Abstract

The present application relates to a one-hand operated safety belt, which comprises a belt buckle and a lock ear, a lock joint, a belt body which is a whole and is connected to the belt buckle from one end and is wound in the lock joint from the other end; the lock joint comprises a lock seat, a locking assembly and an unlocking assembly arranged on the lock seat respectively, the locking assembly comprises a winding belt part which rotates around its own axis direction and can automatically wind the belt body, a locking part which moves synchronously with the winding belt part, a lock tongue which is locked with the locking part, and a locking piece which can be docked with the lock ear and can form self-locking, wherein when the safety belt is used, the lock tongue is locked with the locking part, the belt body stops winding and unwinding, and the locking piece self-locks the lock seat and the lock ear; the unlocking assembly can drive the lock tongue and the locking part, and the locking piece and the lock ear to be unlocked synchronously. The present application is very convenient for buckling and unbuckling the safety belt, and can be operated by one hand completely due to the setting of the belt body, and is particularly suitable for the use of the old people.

Description

Technical Field

[0001] The invention belongs to the field of medical devices, and in particular relates to a safety belt that can be operated with one hand. Background Art

[0002] In many medical devices, such as commonly used elderly rehabilitation equipment, when the elderly sit or lie on the rehabilitation equipment, they need to use seat belts for protection, just like wearing seat belts when driving or riding in a car.

[0003] However, in actual operation, the plug-in and lock mode is basically adopted for operation, and a great deal of force is required to implement the operation, and some even require both hands to operate. However, it is difficult for the elderly to be rehabilitated to operate it. Therefore, there is an urgent need in the market for a safety belt that can be operated with one hand and is easy for the elderly to operate themselves. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an improved safety belt that can be operated with one hand.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A safety belt that can be operated with one hand comprises a buckle and a locking ear respectively connected to a medical device, a locking head capable of locking with the locking ear, and a belt body.

[0007] The belt body is a whole piece, and is connected to the buckle from one end and rolled into the lock joint from the other end;

[0008] The lock head includes a lock seat, a locking assembly and an unlocking assembly respectively arranged on the lock seat, the locking assembly including a belt reel portion that rotates around its own axis and can automatically reel in the belt body, a locking portion that moves synchronously with the belt reel portion, a lock tongue that matches and locks with the locking portion, and a locking member that can dock with the lock ear and can form a self-locking function. When the safety belt is in use, the lock tongue and the locking portion cooperate to lock, the belt body stops reeling, and the locking member self-locks the lock seat and the lock ear.

[0009] The unlocking assembly can drive the lock tongue and the locking portion, as well as the locking piece and the lock ear to be unlocked synchronously.

[0010] Preferably, the lock seat includes a detachable main body shell, a middle connecting module and a main body upper cover, wherein the locking component is arranged on the main body shell and the middle connecting module, and the unlocking component is arranged to emerge from the main body upper cover.

[0011] According to a specific embodiment and preferred aspect of the present invention, the tape winding portion includes a coil spring seat positioned within the main body housing, a coil spring disposed on the coil spring seat, and a coil ferrule abutting the middle portion of the coil spring and capable of winding around a tape body. The tape body is connected to the coil ferrule at one end and is wound around the outer circumference of the coil ferrule. When the locking tongue and the locking portion are unlocked and the locking seat is pulled away from the buckle, the coil ferrule rotates, unwinding the tape body and causing the coil spring to enter a curled and deformed state. When the locking seat is released, the coil spring resets, causing the tape body to rewind and wrap around the outer circumference of the coil ferrule. In other words, once the locking tongue and the locking portion are disengaged, the coil spring resets, allowing the tape body to automatically rewind onto the coil ferrule.

[0012] Preferably, the tape ferrule comprises an inner tape shaft and an outer tape shaft that are nested and move synchronously. The upper end of the inner tape shaft is fixedly connected to the locking portion, and the lower end is connected to the middle of the coil spring via a connecting shaft. The tape body is wound around the outer tape shaft. This makes tape assembly very convenient.

[0013] Furthermore, a coil spring cover is provided on the coil spring seat, the inner shaft of the coil band is mounted above the coil spring cover, and a connecting hole is provided in the middle of the coil spring cover, through which the connecting shaft passes to connect to the coil spring. The coil spring cover is provided to ensure that the coil spring is firmly positioned on the coil spring seat.

[0014] In this example, a plug interface is provided on the coil spring seat, and a plug connector matching the plug interface is provided on the periphery of the coil spring cover.

[0015] Preferably, a notch is formed on the circumferential side of the tape shaft, and the end of the tape body is inserted through the notch and secured to the tape shaft via a first pin. Specifically, a socket is formed at the end of the tape body, and the first pin is inserted into the socket, which extends into the notch. The upper and lower ends of the first pin respectively protrude from the socket and contact the inner wall of the tape shaft, thereby securing the tape body to the tape shaft.

[0016] At the same time, in this example, the connection between the outer belt shaft and the inner belt shaft further ensures the firmness of the belt body and the outer belt shaft.

[0017] According to another specific embodiment and preferred aspect of the present invention, the locking portion is a ratchet, the locking tongue is a ratchet tongue that engages with the teeth of the ratchet, and is rotatably connected to the lock base via a second pin. The locking head further includes a spring leaf with one end disposed on the unlocking assembly and the other end abutting against the ratchet tongue. The spring leaf maintains the relative disengagement of the ratchet tongue from the ratchet under the abutment of the spring leaf. When the locking head is mated with the lock lug, the locking member applies an external force to the ratchet tongue, causing the ratchet tongue to rotate relative to the spring leaf and engage with the teeth of the ratchet to lock the belt. The provision of the spring leaf ensures that the ratchet tongue and ratchet remain disengaged when the safety belt is not in use. In this way, when the locking head is pulled away from the buckle, the belt body unwinds from the belt reel ring. Once released, the reel spring returns to its original position, winding the belt body onto the belt reel outer shaft.

[0018] Preferably, a plug-in hole is formed on the lock ear, and a plug-in column is formed on the lock seat. The locking member includes a top tongue with a lower end protruding from the bottom of the plug-in column and an upper end capable of abutting against the ratchet tongue; a lock hook that rotates relative to the lock seat and can be hooked on the lock ear; a disengaging top tongue; and a torsion spring, wherein the lock hook and the disengaging top tongue are rotatably connected to the ratchet tongue on the lock seat through a second pin shaft, the torsion spring is sleeved on the end of the second pin shaft and the two arms are respectively abutted against the lock seat and the lock hook, when the plug-in column is inserted into the plug-in hole, the top tongue pushes the ratchet tongue to rotate toward the ratchet, and the lock hook rotates accordingly and hooks on the lock ear to form self-locking.

[0019] Specifically, when the spring sheet keeps the ratchet tongue and the ratchet wheel relatively disengaged, the top tongue drives the ratchet tongue to flip over after the plug-in column and the plug-in hole are docked, which not only achieves the locking of the ratchet tongue and the ratchet wheel, but also simultaneously achieves the self-locking of the lock hook and the lock ear. In this way, when the lock head and the lock ear are pulled, the safety belt is locked, which is very convenient for the use of the safety belt.

[0020] Preferably, the push tongue includes an upper push pin, a lower push pin, and a spring arranged between the upper push pin and the lower push pin; the service life of the push tongue can be greatly extended by setting the push tongue with elastic buffering function.

[0021] Preferably, the lock hook includes a hook body, a U-shaped connecting frame disposed on the upper portion of the hook body and connected to the unlocking assembly, arm rods disposed on two vertical rods of the U-shaped connecting frame and extending toward the hook body, and actuating levers disposed at ends of the arm rods distal from the U-shaped connecting frame and supported at the bottom of the ratchet tongue. The actuating levers provide support to ensure the stability of the ratchet tongue's operation, providing stable support regardless of whether the ratchet tongue is engaged or disengaged from the ratchet wheel. Furthermore, the movement of the ratchet tongue and the lock hook are synchronized.

[0022] In addition, the unlocking assembly includes an unlocking cover whose lower end is connected to the U-shaped connecting frame and is arranged above the ratchet tongue, and an unlocking paddle arranged on the unlocking cover.

[0023] Specifically, an avoidance groove is formed on the upper cover of the main body, and the unlocking paddle emerges from the avoidance groove and can move in the avoidance groove. The unlocking cover can block the avoidance groove. No matter where the unlocking paddle moves to in the avoidance groove, the unlocking cover can form a shield to prevent parts or fingers from getting stuck.

[0024] In addition, the buckle in this example includes a buckle body and a through-slot formed on the buckle body. The belt body extends from the end into the through-slot and is positioned by a third pin shaft, wherein the third pin shaft can be removed from the buckle body.

[0025] Due to the implementation of the above technical solution, the present invention has the following advantages compared with the prior art:

[0026] The invention realizes self-locking of the lock head and the lock ear when the lock tongue and the locking part are relatively locked; on the other hand, after the unlocking component is toggled, the lock tongue and the locking part, as well as the locking part and the lock ear are driven to unlock synchronously, which is very convenient for fastening and removing the safety belt. At the same time, the belt body is set up so that it can be operated with one hand, which is particularly suitable for use by the elderly in rehabilitation medical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Figure 1 is a schematic diagram of the three-dimensional structure of the safety belt of the present invention (when fastened);

[0029] Figure 2 It is a schematic diagram of the structure decomposition of the safety belt of the present invention;

[0030] Figure 3 for Figure 1 Schematic diagram of the main view;

[0031] Figure 4 for Figure 3 A half-section diagram of

[0032] Figure 5 is a schematic diagram of the three-dimensional structure of the safety belt of the present invention (when not fastened);

[0033] Figure 6 for Figure 5 A half-section diagram of

[0034] Figure 7 It is a partial structural schematic diagram of the lock joint of the safety belt of the present invention;

[0035] Figure 8 for Figure 7 The main schematic diagram of

[0036] Wherein: 1, buckle; 10, buckle body; 10a, slot; 11, third pin;

[0037] 2. Locking lug; 20. Locking lug upper cover; 21. Locking lug lower cover; 2a. Connecting hole; 2b. Buckle notch;

[0038] 3. Locking joint; 30. Locking seat; 300. Main body shell; 301. Middle connecting module; 302. Main body cover; 31. Locking assembly; 310. Tape reel; a. Coil spring seat; a1. Plug port; b. Coil spring; c. Coil ring; c1. Inner coil shaft; c2. Outer coil shaft; c20. Notch; c21. First pin; d. Coil spring cover; d1. Connecting hole; d2. Plug connector; e. Second pin f, plug-in post; 311, locking portion (ratchet); 312, lock tongue (ratchet tongue); 313, locking member; g, top tongue; g1, upper push pin; g2, lower push pin; g3, spring; h, lock hook; h1, hook body; h2, U-shaped connecting frame; h3, arm; h4, lever; j, release tongue; k, torsion spring; 32, unlocking assembly; 320, unlocking cover; 321, unlocking paddle; 33, spring leaf;

[0039] 4. Belt body; 4a, 4b, plug-in holes. DETAILED DESCRIPTION

[0040] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0041] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0043] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0044] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0045] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0046] like Figure 1 As shown, this embodiment relates to a safety belt that can be operated with one hand, which includes a buckle 1 and a locking ear 2 respectively connected to a medical device, a locking head 3 that can cooperate with the locking ear 2 to lock, and a belt body 4.

[0047] Specifically, 4 is a whole fabric belt, and the belt body 4 is connected to the buckle 1 from one end and rolled into the lock joint 3 from the other end.

[0048] Combine Figures 2 to 4As shown, the locking head 3 includes a locking seat 30 , a locking assembly 31 and an unlocking assembly 32 respectively arranged on the locking seat 30 .

[0049] The lock base 30 includes a detachable main body shell 300 , a middle connecting module 301 and a main body cover 302 , wherein the locking component 31 is arranged on the main body shell 300 and the middle connecting module 301 , and the unlocking component 32 is arranged to emerge from the main body cover 302 .

[0050] The locking assembly 31 includes a winding portion 310 that rotates around its own axis and can automatically reel in the belt body 4, a locking portion 311 that moves synchronously with the winding portion 310, a locking tongue 312 that matches and locks with the locking portion 311, and a locking member 313 that can dock with the lock ear 2 and can form a self-locking function. When the safety belt is in use, the locking tongue 312 cooperates with the locking portion 311 to lock, the belt body 4 stops winding and unwinding, and the locking member 313 self-locks the lock seat 30 and the lock ear 1.

[0051] The tape winding portion 310 includes a spring seat a positioned within the main housing 300, a spring b mounted on the spring seat a, and a tape loop c that abuts the center of spring b and is capable of winding around the belt body 4. The belt body 4 is connected to the loop c at one end and is wound around its periphery. When the locking tongue 312 and the locking portion 311 are unlocked and the lock seat 30 is pulled away from the buckle 1, the loop c rotates (about its own axis), unwinding the belt body 4 and causing the spring b to curl. When the lock seat 30 is released, the spring b resets, causing the belt body 4 to retract and wrap around the periphery of the loop c. In other words, once the locking tongue is disengaged from the locking portion, the spring resets the belt body, allowing it to automatically retract onto the loop c.

[0052] The tape ferrule c comprises an inner tape shaft c1 and an outer tape shaft c2, which are connected and move synchronously. The upper end of the inner tape shaft c1 is fixedly connected to the locking portion 311, and the lower end is connected to the middle of the coil spring b via a connecting shaft. The tape body 4 is wrapped around the outer tape shaft c2, which greatly facilitates the assembly of the tape.

[0053] A coil spring cover d is mounted on coil spring seat a. The inner coil belt shaft c1 is mounted above coil spring cover d. A connecting hole d1 is located in the center of coil spring cover d, through which the connecting shaft passes to connect to coil spring b. The presence of coil spring cover d primarily ensures the coil spring is securely positioned on the coil spring seat and prevents other components from falling in and causing coil spring b to become stuck.

[0054] In this example, a plug-in interface a1 is provided on the coil spring seat a, and a plug-in connector d2 matching the plug-in interface a1 is provided on the periphery of the coil spring cover d.

[0055] Specifically, there are three plug connectors d2 and three corresponding plug interfaces a1, which are distributed in a triangle.

[0056] The tape outer shaft c2 is fixedly mounted on the outer circumference of the tape inner shaft c1, facilitating the connection between the tape outer shaft c2 and the tape body 4. In this example, a notch c20 is defined on the circumferential side of the tape outer shaft c2. The end of the tape body 4 passes through the notch c20 and is secured to the tape outer shaft c2 via a first pin c21. Specifically, a receiving hole 4a is formed at the end of the tape body 4. The first pin c21 is inserted into the receiving hole 4a, which extends into the notch c20. The upper and lower ends of the first pin c21 protrude from the receiving hole 4a and contact the inner wall of the tape outer shaft c2, thereby securing the tape body 4 to the tape outer shaft c2.

[0057] At the same time, in this example, the connection between the tape outer shaft c2 and the tape inner shaft c1 further ensures the firmness of the tape body 4 and the tape outer shaft c2.

[0058] In this example, the locking portion 311 is a ratchet, and the locking tongue 312 is a ratchet tongue that matches the teeth of the ratchet, and is rotatably connected to the middle connection module 301 through the second pin e.

[0059] Combine Figure 5 and Figure 6 As shown, the unlocking assembly 32 can drive the lock tongue and the locking portion, as well as the locking member and the lock ear to unlock synchronously.

[0060] The locking head 3 also includes a spring plate 33, one end of which is mounted on the unlocking assembly 32 and the other end of which contacts the ratchet tongue. The spring plate 33 maintains the relative disengagement of the ratchet tongue and the ratchet wheel. When the locking head 3 is mated with the lock ear 2, the locking member 313 applies an external force to the ratchet tongue, causing the ratchet tongue to rotate relative to the spring plate 33 and engage the teeth of the ratchet wheel, thus locking the seat belt. The spring plate 33 ensures that the ratchet tongue and ratchet wheel remain disengaged when the seat belt is not in use. This allows the belt to unwind from the belt reel when the locking head is pulled away from the buckle. Once released, the reel spring returns to its original position, rewinding the belt onto the reel shaft.

[0061] The lock ear 2 includes a lock ear upper cover 20 and a lock ear lower cover 21 that are connected to each other, wherein the lock ear upper cover 20 and the lock ear lower cover 21 are formed with an inserting hole 2a and a buckle notch 2b.

[0062] Combine Figure 7 and Figure 8As shown, a plug-in column f is formed on the main shell 300, and the locking member 313 includes a top tongue g whose lower end protrudes from the bottom of the plug-in column d and whose upper end can abut against the ratchet tongue; a lock hook h that rotates relative to the middle connecting module 301 and can be hooked on the snap notch 2b of the lock ear 2; a disengaging top tongue j; and a torsion spring k, wherein the lock hook h and the disengaging top tongue g are rotatably connected to the ratchet tongue on the middle connecting module 301 through the second pin shaft e, and the torsion spring k is sleeved on the end of the second pin shaft e and the two arms respectively abut against the middle connecting module 301 and the lock hook h. When the plug-in column f is inserted into the plug-in hole 2a, the top tongue g pushes the ratchet tongue to rotate toward the ratchet, and the disengaging top tongue j abuts against the bottom of the middle connecting module 301 under the action of the torsion spring k; the lock hook h rotates accordingly and hooks on the lock ear 2 to form a self-locking.

[0063] Specifically, when the spring sheet 33 keeps the ratchet tongue and the ratchet wheel relatively disengaged, after the plug-in column f and the plug-in hole 2a are docked, the ratchet tongue is driven by the top tongue g to flip over, which not only realizes the locking of the ratchet tongue and the ratchet wheel, but also simultaneously realizes the self-locking of the lock hook g and the buckle notch 2b. In this way, when the lock head 3 and the lock ear 2 are pulled, the safety belt is locked, which makes the use of the safety belt very convenient.

[0064] In this example, the tongue g includes an upper push pin g1, a lower push pin g2, and a spring g3 arranged between the upper push pin g1 and the lower push pin g2; the elastically buffered tongue g can greatly extend the service life of the tongue g.

[0065] The lock hook h comprises a hook body h1, a U-shaped connecting frame h2 mounted on the upper portion of the hook body h1 and connected to the unlocking assembly 32, arm rods h3 mounted on two vertical rods of the U-shaped connecting frame h2 and extending toward the hook body h1, and actuating levers h4 mounted on the ends of the arm rods h3 distal from the U-shaped connecting frame h2 and supported at the bottom of the ratchet latch. The support provided by the actuating levers h4 ensures the stability of the ratchet latch, providing stable support whether the ratchet latch is engaged or disengaged from the ratchet wheel. Furthermore, the movement of the ratchet latch is synchronized with the movement of the lock hook.

[0066] The unlocking assembly 32 includes an unlocking cover 320 , the lower end of which is connected to the U-shaped connecting frame h2 and is arranged above the ratchet tongue, and an unlocking paddle 321 arranged on the unlocking cover 320 .

[0067] Specifically, an avoidance groove is formed on the main body cover 302, and the unlocking paddle 321 emerges from the avoidance groove and can move in the avoidance groove. The unlocking cover 320 can block the avoidance groove. No matter where the unlocking paddle moves to in the avoidance groove, the unlocking cover can form a shield to prevent parts or fingers from getting stuck.

[0068] In addition, the buckle 1 in this example includes a buckle body 10 and a third pin 11, wherein the belt body 4 extends from the end into the through-slot 10a on the buckle body 10, and the third pin 11 is used for positioning, wherein the third pin 11 can be removed from the buckle body 10.

[0069] Specifically, the principle of positioning the end of the belt body 4 and the buckle body 10 by the third pin shaft 11 is the same as the principle of positioning the end of the belt body 4 by the first pin shaft c21. The third pin shaft 11 is inserted through the through hole 4b on the belt body 4 and the buckle body 10 to achieve a detachable connection between the belt body 4 and the buckle 1.

[0070] In summary, in this embodiment, the buckle 1 and the lock ear 2 are first arranged on the opposite sides of the rehabilitation device, and the lock head 3 is moved to release the self-locking joint 3 of the belt body 4 until the lock head 3 is engaged with the lock ear 2 and the belt body 4 stops releasing, thereby fastening the user to the rehabilitation device.

[0071] The specific implementation process is as follows:

[0072] like Figure 6 As shown, the coil spring b is in its natural state, the belt body 4 is wound around the outer periphery of the coil ring c, and the spring leaf 33 drives the ratchet tongue and the ratchet to be in a relatively disengaged state. Therefore, at this time, as long as the lock head 3 is pulled from the side where the belt buckle 1 is located to the side where the lock ear 2 is located, the coil ring c rotates (around its own axis), the belt body 4 is wound and unwound, and the coil spring b is in a curled and deformed state. Figure 7 As shown, when the lock head 3 approaches the lock ear 2, the insertion post f and the insertion hole 2a on the lock ear 2 are connected, and the tongue g pushes up, driving the ratchet tongue to flip, so that the ratchet tongue and the ratchet are locked. At the same time, during the flipping process of the ratchet tongue, the lock hook h moves synchronously and hooks onto the buckle notch 2b on the lock ear 2 to form a self-locking. In this way, the safety belt is fastened.

[0073] As for the removal process of the seat belt: the unlocking paddle 321 is rotated around the second pin shaft, so that the lock hook h and the ratchet tongue move synchronously, wherein the disengaged top tongue j is disengaged downward from the bottom of the middle connecting module 301, the torsion spring k is deformed, and the lock hook h rotates and disengages from the buckle notch 2b, and the ratchet tongue is further disengaged from the ratchet, and maintains the movement trend of the ratchet tongue and the ratchet being disengaged under the resistance of the spring sheet 33. At this time, the lock head 3 and the lock ear 2 are relatively disengaged, and under the reset of the winding spring b, the belt body 4 is automatically reeled toward the outer periphery of the winding ring c. After the unlocking paddle 321 is released, the torsion spring k is reset, the disengaged top tongue j is abutted against the bottom of the middle connecting module 301, and the lock hook h is reset.

[0074] Therefore, it can be seen from the above-mentioned process of fastening and removing the safety belt that, in this embodiment, on the one hand, when the lock tongue and the locking part are relatively locked, the lock head and the lock ear are synchronously self-locking; on the other hand, after the unlocking component is toggled, the lock tongue and the locking part, as well as the locking part and the lock ear are driven to be unlocked synchronously, which is very convenient for fastening and removing the safety belt. At the same time, due to the setting of the belt body, it can be completely operated with one hand, which is particularly suitable for use by the elderly who use rehabilitation medical equipment.

[0075] The present invention has been described in detail above, but the present invention is not limited to the above embodiments. Any equivalent changes or modifications made based on the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A safety belt operable with one hand, comprising a buckle and a locking lug connected to a medical device, a locking head capable of locking with the locking lug, and a belt body, characterized in that: The belt body is a whole piece, and one end of the belt body is connected to the belt buckle and the other end is rolled up in the lock head; the lock ear includes a lock ear upper cover and a lock ear lower cover that are connected to each other up and down, wherein the lock ear upper cover and the lock ear lower cover are formed with a plug hole and a snap notch; the lock head includes a lock seat, a locking assembly and an unlocking assembly respectively arranged on the lock seat; the lock seat includes a detachable main body shell, a middle connecting module and a main body upper cover, wherein the locking assembly is arranged on the main body shell and the middle connecting module, and the unlocking assembly is arranged to emerge from the main body upper cover; the locking assembly includes a belt reel portion that rotates around its own axis and can automatically reel up the belt body, a locking portion that moves synchronously with the belt reel portion, a lock tongue that matches and locks the locking portion, and a locking member that can dock with the lock ear and can form a self-locking. The locking member is configured to lock the locking member and the latch into position so that the latch engages with the teeth of the ratchet wheel, and the latch engages with the teeth of the ratchet wheel to form a locking mechanism. The locking hook is rotated relative to the middle connecting module and can be hooked on the buckle notch of the lock ear; a disengaging tongue; and a torsion spring, wherein the locking hook and the disengaging tongue are rotatably connected to the middle connecting module through a second pin shaft, the torsion spring is sleeved on the end of the second pin shaft and the two arm rods respectively abut against the middle connecting module and the locking hook. When the plug post is inserted into the plug hole, the top tongue pushes the ratchet tongue to rotate toward the ratchet, and the disengaging tongue abuts against the bottom of the middle connecting module under the action of the torsion spring; the locking hook rotates accordingly and hooks on the lock ear to form a self-locking; the locking hook includes a hook body, a U-shaped connecting frame provided at the upper part of the hook body and connected to the unlocking assembly, arm rods respectively provided on the two vertical rods of the U-shaped connecting frame and extending in the direction of the hook body, and a shift rod respectively provided on the end of the arm rod away from the U-shaped connecting frame and supported on the bottom of the ratchet tongue; the unlocking assembly includes an unlocking cover at the lower end connected to the U-shaped connecting frame and covering above the ratchet tongue, and an unlocking paddle provided on the unlocking cover.

2. The one-hand operable safety belt according to claim 1, characterized in that: The belt winding portion includes a winding spring seat positioned in the main body shell, a winding spring arranged on the winding spring seat, and a winding ring docked with the middle of the winding spring and capable of winding around the belt body. The belt body is connected to the winding ring from one end and wound around the outer circumference of the winding ring. When the lock tongue and the locking portion are in an unlocked state and the lock seat is pulled away from the belt buckle, the winding ring rotates, the belt body is unwound, and the winding spring is in a curled deformation state; when the lock seat is released, the winding spring resets, and the belt body is wound up and wrapped around the outer circumference of the winding ring.

3. The one-hand operable safety belt according to claim 2, characterized in that: The tape ring includes an inner tape shaft and an outer tape shaft that are connected to each other and move synchronously, wherein the upper end of the inner tape shaft is fixedly connected to the locking part, and the lower end is connected to the middle part of the coil spring through a connecting shaft; the tape body is wound on the outer tape shaft.

4. The one-hand operable safety belt according to claim 3, characterized in that: A coil spring cover is also provided on the coil spring seat, the coil inner shaft is mounted above the coil spring cover, and a connecting hole is provided in the middle of the coil spring cover, and the connecting shaft passes through the connecting hole to be connected to the coil spring.

5. The one-hand operable safety belt according to claim 4, characterized in that: A notch is provided on the circumferential side surface of the tape reel outer shaft, and the end of the tape body passes through the notch and is fixed to the tape reel outer shaft via a first pin shaft.

6. The one-hand operable safety belt according to claim 1, characterized in that: The push tongue includes an upper push pin, a lower push pin, and a spring arranged between the upper push pin and the lower push pin.

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