Safety handle with self-locking function

Abstract

The utility model provides a safety handle with a self-locking function, which comprises a fixed seat, a handle shell, a safety lock catch and a pushing piece, the safety lock catch is slidably mounted in the handle shell, the pushing piece is used for pushing the safety lock catch to slide, and a pulling piece is wound at one end of the handle shell. The end, facing the pulling piece, of the safety lock catch is provided with a clamping and stopping part, the other end of the safety lock catch is connected with the fixing base, and the clamping and stopping part is used for locking the pulling piece. In a normal use state, the safety lock catch is pulled open by the fixing seat, the clamping part is separated from the pulling piece, and the pulling piece is tightened and can be freely pulled; when the safety lock catch is separated from the fixed seat, the pushing piece pushes the safety lock catch to reset, so that the clamping part locks the pulling piece; the safety handle with the self-locking function overcomes the defect that an existing roller shutter is low in use safety.

Description

Technical Field

[0001] This utility model relates to the field of roller shutter handles, and in particular to a safety handle with a self-locking function. Background Technology

[0002] Roller blinds, as a common sunshade, light-blocking, and space-dividing device, are widely used in various spaces such as residential, commercial buildings, and industrial sites. Roller blinds are generally equipped with an adjustment head for adjusting the raising and lowering of the curtain. The adjustment head usually has a closed, ring-shaped pull mechanism, which can be a pull cord or a beaded pull. Pulling the pull mechanism adjusts the raising and lowering of the curtain.

[0003] Safety is paramount when using roller blinds, but existing roller blinds cannot guarantee safety. This is especially true for households with young children, who sometimes like to hang the closed loop pull around their necks or put it on their hands while playing. When they are having fun, they often forget that the pull is still hanging around their necks or on their hands, which can lead to falls or more serious accidents when they suddenly run around, making them unsafe to use. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The problem to be solved by this utility model is to provide a safety handle with a self-locking function to overcome the shortcomings of the low safety of existing roller blinds.

[0006] (II) Technical Solution

[0007] To solve the aforementioned technical problem, this utility model provides a safety handle with a self-locking function, including a fixed base, a handle housing, a safety latch slidably installed in the handle housing, and a pusher for pushing the safety latch to slide. A pull member is wound around one end of the handle housing, and a locking portion is provided at one end of the safety latch facing the pull member, with its other end connected to the fixed base. The locking portion is used to lock the pull member. In normal use, the fixed base pulls open the safety latch, the locking portion disengages from the pull member, and the pull member becomes taut and can be pulled freely. When the safety latch disengages from the fixed base, the pusher pushes the safety latch to reset, thereby locking the pull member again by the locking portion.

[0008] In some embodiments, the pusher is a spring installed between the safety latch and the handle housing, the spring always tending to move the safety latch toward the puller.

[0009] In some embodiments, the safety latch is provided with a spring receiving groove, and the handle housing is provided with a spring limiting seat extending into the spring receiving groove. One end of the spring abuts against the side wall of the spring receiving groove, and the other end abuts against the spring limiting seat. The handle housing is provided with a U-shaped guide wall for guiding the safety latch.

[0010] In some embodiments, the safety latch is provided with an elastic locking head, and the handle housing is provided with a slot that can engage with the elastic locking head; when the locking part locks the pulling member, the elastic locking head engages in the slot.

[0011] In some embodiments, the handle housing has a straight groove on one side of the slot, and the elastic locking head is placed in the straight groove under normal use. An inclined guide wall is provided on the side of the straight groove near the slot, and the inclined guide wall is used to press down the elastic locking head so that it slides from the straight groove into the slot.

[0012] In some embodiments, the locking portion is provided with an arc-shaped wall, and the two sides of the arc-shaped wall are symmetrically provided with conical sharp corners, both of which are inclined outward.

[0013] In some embodiments, a buckle is installed at the upper end of the handle housing, and baffles are symmetrically arranged on the buckle. An arc-shaped wall is formed between the two baffles, and the pulling member is wound around the arc-shaped wall.

[0014] In some embodiments, the handle housing includes a left housing and a right housing, and the buckle is installed between the left housing and the right housing; the left housing and the right housing are respectively provided with a buckle, and the buckle is provided with a buckle groove that engages with the buckle.

[0015] In some embodiments, a guide post is provided at the end of the safety lock away from the locking part, and a waist-shaped guide groove adapted to the guide post is provided on the handle housing; an elastic insertion post is provided on the fixing base, and the elastic insertion post is inserted into the guide post; a stop flange is provided on the elastic insertion post to prevent the guide post from disengaging, and a tapered wall is provided on the outer side of the stop flange to facilitate the insertion of the guide post.

[0016] In some embodiments, the fixing base is L-shaped and includes a horizontal wall and a vertical wall arranged vertically. Both the horizontal wall and the vertical wall are provided with a plurality of connecting through holes. Fastening screws are inserted into the connecting through holes, and the elastic insertion post is vertically arranged on the vertical wall.

[0017] (III) Beneficial Effects

[0018] This utility model provides a safety handle with a self-locking function. Under normal use, the fixed base is fixed to the external wall. Pulling the fixed base releases the safety lock and tightens the pulling component. The constant tension of the pulling component prevents children from getting tangled around their heads and necks, ensuring safety during use. The pulling component can also be pulled freely without affecting its normal use. Under external force, when the safety lock disengages from the fixed base, a pusher pushes the safety lock back to its original position, locking the pulling component. At this point, the pulling component cannot be pulled continuously, prompting users to address the malfunction and reinstall the safety lock back onto the fixed base to prevent the anti-entanglement function from failing and improving safety. Furthermore, a tapered corner is used to secure the pulling component, making the locking more reliable. An elastic locking head and slot are used to prevent the safety lock from opening when disengaged. The buckle and handle housing are connected by an inverted connection to avoid disassembly and prevent children from swallowing the parts. This overcomes the shortcomings of existing roller blinds in terms of safety. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a perspective view of a safety handle with a self-locking function according to the present invention;

[0021] Figure 2 This is a perspective view of the interior of a safety handle with a self-locking function according to this utility model;

[0022] Figure 3 This is an exploded view of a safety handle with a self-locking function according to this utility model;

[0023] Figure 4 This is a cross-sectional view of a safety handle with a self-locking function according to this utility model;

[0024] Figure 5 This is a cross-sectional view of a safety handle with a self-locking function according to this utility model from another perspective;

[0025] Figure 6 This is a perspective view of the right housing of a safety handle with a self-locking function according to this utility model;

[0026] Figure 7 This is a perspective view of a safety handle safety lock with self-locking function according to the present invention;

[0027] Figure 8 This is a perspective view of a safety handle buckle with a self-locking function according to the present invention;

[0028] Figure 9 This is a perspective view of a safety handle buckle with a self-locking function according to this utility model.

[0029] Figure 10 This is a perspective view of a safety handle holder with a self-locking function according to the present invention.

[0030] The component names corresponding to the various reference numerals in the figure are as follows: 1. Fixing base; 101. Elastic insert; 102. Stop flange; 103. Conical wall; 104. Horizontal wall; 105. Vertical wall; 106. Connecting through hole; 2. Handle housing; 21. Left housing; 22. Right housing; 201. Spring limit seat; 202. Slot; 203. Straight slot; 204. Inclined guide wall; 205. Inverted buckle; 206. Waist-shaped guide slot; 207. U-shaped guide wall; 3. Safety lock; 301. Locking part; 302. Spring receiving slot; 303. Elastic locking head; 304. Arc-shaped wall; 305. Conical sharp corner; 306. Guide post; 4. Pushing component; 5. Pulling component; 6. Buckle; 601. Baffle; 602. Arc-shaped winding wall; 603. Inverted buckle slot; 7. Fastening screw. Detailed Implementation

[0031] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0032] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0034] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0035] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0036] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0037] See Figures 1 to 10 This utility model provides a safety handle with a self-locking function, including a fixing base 1 that can be fixed to an external wall, a handle housing 2, a safety lock 3 that is slidably installed in the handle housing 2, and a pusher 4 for pushing the safety lock 3 to slide. One end of the handle housing 2 is provided with a puller 5. Pulling the puller 5 can rotate the curtain adjustment head, thereby adjusting the curtain to raise and lower. The puller 5 can be a pull cord or a pull bead. In this embodiment, the puller 5 is preferably a pull cord.

[0038] See Figures 2 to 4The safety latch 3 has a locking part 301 at one end facing the pull member 5, and the other end of the safety latch 3 is connected to the fixed base 1. The locking part 301 is used to lock the pull member 5. Under normal use, the fixed base 1 is fixed to the external wall. The fixed base 1 pulls open the safety latch 3 and tightens the pull member 5. The pull member 5 is always taut to avoid the risk of children getting tangled around their heads and necks, ensuring safety during use. At this time, the locking part 301 disengages from the pull member 5, and the pull member 5 can be pulled freely without affecting its normal use. Under the action of external force, when the safety latch 3 disengages from the fixed base 1, the pusher 4 can push the safety latch 3 to reset, thereby locking the pull member 5 with the locking part 301. At this time, the pull member 5 cannot be pulled continuously, thus reminding people to deal with the fault in time and reinstall the safety latch 3 onto the fixed base 1 to avoid failure of the anti-entanglement function and improve the safety of use.

[0039] In some embodiments, such as Figures 2 to 4 As shown, the pushing component 4 is a spring installed between the safety latch 3 and the handle housing 2. The spring always tends to move the safety latch 3 towards the pulling component 5. In normal use, the fixed base 1 needs to overcome the spring force to pull the safety latch 3 open, at which point the spring is compressed. When the safety latch 3 disengages from the fixed base 1 (disengaged state), the spring rebounds, causing the safety latch 3 to reset, ensuring the reliability of the structure and its simplicity. The safety latch 3 is provided with a spring receiving groove 302, and the spring is placed in the spring receiving groove 302. The handle housing 2 is provided with a spring limiting seat 201 that extends into the spring receiving groove 302. One end of the spring abuts against the side wall of the spring receiving groove 302, and the other end of the spring abuts against the spring limiting seat 201. The handle housing 2 is provided with a U-shaped guide wall 207 for guiding the safety latch 3. One side of the U-shaped guide wall 207 is provided with an opening, through which the safety latch 3 can be inserted into the U-shaped guide wall 207.

[0040] In some embodiments, such as Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the safety latch 3 is equipped with a flexible locking head 303. The flexible locking head 303 and the safety latch 3 are integral plastic parts. The handle housing 2 is provided with a slot 202 that can engage with the flexible locking head 303. The slot 202 is open to the outside, so that the flexible locking head 303 can be pressed down to disengage from the slot 202 when a fault is caused. When the locking part 301 locks the pulling part 5, the flexible locking head 303 is engaged in the slot 202. This structure, with the addition of the flexible locking head 303 and the slot 202, ensures that in the disengaged state, the flexible locking head 303 and the slot 202 are engaged, keeping the locking part 301 locked in the pulling part 5, preventing the safety latch from being opened, and ensuring reliable function.

[0041] In some embodiments, such as Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the handle housing 2 has a straight groove 203 on one side of the slot 202. In normal use, the elastic locking head 303 is placed in the straight groove 203. An inclined guide wall 204 is provided on the side of the straight groove 203 near the slot 202. When the handle changes from the normal use state to the disengaged state, the inclined guide wall 204 is used to press down the elastic locking head 303, so that the elastic locking head 303 slides from the straight groove 203 into the slot 202.

[0042] In some embodiments, such as Figure 4 and Figure 7 As shown, the locking part 301 is provided with an arc-shaped wall 304, and two conical sharp corners 305 are symmetrically arranged on both sides of the arc-shaped wall 304. Both conical sharp corners 305 are inclined outward. The conical sharp corners 305 are used to lock the pulling part 5, making the locking more reliable.

[0043] In some embodiments, such as Figure 4 and Figure 9 As shown, a buckle 6 is installed on the upper end of the handle housing 2, and baffles 601 are symmetrically arranged on the buckle 6. An arc-shaped wall 602 is formed between the two baffles 601, and the pull member 5 is wound around the arc-shaped wall 602.

[0044] In some embodiments, such as Figure 4 , Figure 5 and Figure 8 As shown, the handle housing 2 includes a left housing 21 and a right housing 22, with a buckle 6 installed between the left housing 21 and the right housing 22. Each of the left housing 21 and the right housing 22 is provided with an inverted buckle 205, and the buckle 6 is provided with an inverted buckle groove 603 that engages with the inverted buckle 205. This structure, with the buckle and handle housing connected by an inverted buckle, avoids disassembly of parts, prevents accidental ingestion by children, and ensures high safety during use.

[0045] In some embodiments, such as Figure 3 , Figure 5 and Figure 10 As shown, the safety latch 3 has a guide post 306 at the end away from the locking part 301, and the handle housing 2 has a waist-shaped guide groove 206 adapted to the guide post 306. The fixing base 1 has a resilient insert 101, and the fixing base 1 and the resilient insert 101 are integral plastic parts. The resilient insert 101 is hollow, allowing it to have a certain degree of elasticity. The resilient insert 101 is inserted into the guide post 306, and the resilient insert 101 has a stop flange 102 to prevent the guide post 306 from disengaging. The outer side of the stop flange 102 has a tapered wall 103 to facilitate the insertion of the guide post 306.

[0046] In some embodiments, such as Figure 3 , Figure 5 and Figure 10 As shown, the fixing base 1 is L-shaped and includes a horizontal wall 104 and a vertical wall 105 arranged vertically. Both the horizontal wall 104 and the vertical wall 105 are provided with multiple connecting through holes 106, which can be fixed from the bottom or the side, and the connection method is diverse. Fastening screws 7 are inserted in the connecting through holes 106, and the fixing base 1 is fixed to the outer wall by fastening screws 7. The elastic insertion post 101 is vertically arranged on the vertical wall 105.

[0047] The same or similar parts between the various embodiments in this specification can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments.

[0048] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A safety handle with self-locking function, characterized in that: The device includes a fixed base (1), a handle housing (2), a safety lock (3) slidably installed in the handle housing (2), and a pusher (4) for pushing the safety lock (3) to slide. One end of the handle housing (2) is provided with a puller (5). The safety lock (3) is provided with a locking part (301) at one end facing the puller (5), and its other end is connected to the fixed base (1). The locking part (301) is used to lock the puller (5). In normal use, when the fixed base (1) pulls open the safety lock (3), the locking part (301) disengages from the puller (5), and the puller (5) is taut and can be pulled freely. When the safety lock (3) disengages from the fixed base (1), the pusher (4) pushes the safety lock (3) to reset, thereby locking the puller (5) with the locking part (301).

2. The safety handle with self-locking function according to claim 1, characterized in that: The pusher (4) is a spring installed between the safety lock (3) and the handle housing (2), and the spring always tends to move the safety lock (3) toward the puller (5).

3. The safety handle with self-locking function according to claim 2, characterized in that: The safety latch (3) is provided with a spring receiving groove (302), and the handle housing (2) is provided with a spring limiting seat (201) extending into the spring receiving groove (302). One end of the spring abuts against the side wall of the spring receiving groove (302), and the other end abuts against the spring limiting seat (201). The handle housing (2) is provided with a U-shaped guide wall (207) for guiding the safety latch (3).

4. The safety handle with self-locking function according to claim 1, characterized in that: The safety lock (3) is provided with an elastic locking head (303), and the handle housing (2) is provided with a slot (202) that can engage with the elastic locking head (303); when the locking part (301) locks the pull member (5), the elastic locking head (303) engages in the slot (202).

5. The safety handle with self-locking function according to claim 4, characterized in that: The handle housing (2) has a straight groove (203) on one side of the slot (202). In normal use, the elastic locking head (303) is placed in the straight groove (203). An inclined guide wall (204) is provided on the side of the straight groove (203) near the slot (202). The inclined guide wall (204) is used to press down the elastic locking head (303) so that it slides from the straight groove (203) into the slot (202).

6. The safety handle with self-locking function according to claim 1, characterized in that: The locking part (301) is provided with an arc-shaped wall (304), and the arc-shaped wall (304) is provided with conical sharp corners (305) on both sides, and the two conical sharp corners (305) are inclined outward.

7. The safety handle with self-locking function as described in claim 1, characterized in that: The upper end of the handle housing (2) is equipped with a buckle (6), and baffles (601) are symmetrically arranged on the buckle (6). An arc-shaped wall (602) is formed between the two baffles (601), and the pull member (5) is wound around the arc-shaped wall (602).

8. The safety handle with self-locking function according to claim 7, characterized in that: The handle housing (2) includes a left housing (21) and a right housing (22), and the buckle (6) is installed between the left housing (21) and the right housing (22); the left housing (21) and the right housing (22) are respectively provided with buckles (205), and the buckle (6) is provided with buckle grooves (603) that engage with the buckles (205).

9. The safety handle with self-locking function according to claim 1, characterized in that: The safety latch (3) is provided with a guide post (306) at one end away from the locking part (301), and the handle housing (2) is provided with a waist-shaped guide groove (206) adapted to the guide post (306); the fixed base (1) is provided with an elastic insertion post (101), and the elastic insertion post (101) is inserted into the guide post (306); the elastic insertion post (101) is provided with a stop flange (102) to prevent the guide post (306) from disengaging, and the outer side of the stop flange (102) is provided with a tapered wall (103) to facilitate the insertion of the guide post (306).

10. The safety handle with self-locking function according to claim 9, characterized in that: The fixing base (1) is L-shaped and includes a horizontal wall (104) and a vertical wall (105) arranged vertically. Both the horizontal wall (104) and the vertical wall (105) are provided with multiple connecting through holes (106). Fastening screws (7) are inserted into the connecting through holes (106). The elastic insert (101) is vertically arranged on the vertical wall (105).

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