Simple curtain telescopic track capable of preventing derailment

Abstract

The present utility model relates to a simple curtain telescopic track capable of preventing derailment, comprising a main rod, and secondary rods symmetrically and slidably connected to two ends of the main rod. A derailment prevention assembly is provided between the main rod and each secondary rod, and the derailment prevention assembly comprises first stoppers connected to the main rod and a second stopper connected to the secondary rod; the first stoppers are fixedly arranged at the two ends of the main rod to stop the second stopper, and the second stopper is snap-fitted on the end of the secondary rod extending into the main rod and slides synchronously with the secondary rod; and the end of the secondary rod connected to the second stopper can slide from the midpoint position of the main rod to the stop position of the second stopper and the first stoppers. According to the present utility model, the first stoppers are arranged on the main rod, the second stoppers are snap-fitted on the secondary rods, and the first stoppers are used for stopping the second stoppers to prevent the secondary rods from being separated from the main rod; and the structure is simple, fewer parts are used, assembling is convenient, and the production cost is lower.

Description

A simple curtain telescopic track capable of preventing derailment Technical Field

[0001] The utility model relates to the technical field of curtain accessories, in particular to a simple curtain telescopic track capable of preventing derailment. Background Art

[0002] A general curtain telescopic track includes a main rod and a secondary rod. The secondary rod extends and retracts along the main rod. In order to prevent the secondary rod from completely sliding out of the main rod, a limit blocking structure is generally installed in the main rod to prevent the secondary rod from separating from the main rod. The existing limit blocking structure adopts a structure in which sliders block each other. Metal sliders need to be fixed on both the main rod and the secondary rod, and they need to be fixed with screws. Although metal sliders are wear-resistant, they have high production costs and are difficult to assemble.

[0003] Utility Model Content

[0004] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a simple curtain telescopic track that can prevent derailment, and the anti-derail assembly adopted is simple, has low production cost, and is easy to assemble.

[0005] The technical solution adopted by the utility model to solve the above-mentioned technical problems is as follows: a simple curtain telescopic track that can prevent derailment comprises a main rod and a secondary rod symmetrically slidably connected to the two ends of the main rod, an anti-derail assembly is arranged between the main rod and the secondary rod, the anti-derail assembly comprises a first gear piece connected to the main rod and a second gear piece connected to the secondary rod, the first gear piece is fixedly arranged at both ends of the main rod to block the second gear piece, the second gear piece is clamped on the end of the secondary rod that extends into the main rod and slides synchronously with the secondary rod, and the end of the secondary rod connected to the second gear piece can slide from the midpoint of the main rod to the position where the second gear piece and the first gear piece abut each other.

[0006] Furthermore, the first shifting member is a pin or a screw.

[0007] Furthermore, the second shifting member is made of plastic, a flat plate-shaped extension portion is provided above the second shifting member, a buckle is provided on the end of the flat plate-shaped extension portion facing the auxiliary rod, and a bayonet that cooperates with the buckle is provided on the auxiliary rod.

[0008] Furthermore, an irregular extension portion is symmetrically provided below the second gear member, part of the outer circumferential surface of the irregular extension portion is fitted with the auxiliary rod, and another part of the outer circumferential surface of the irregular extension portion is fitted with the main rod. The end face of the irregular extension portion is used to block the first gear member, and the distance from the bottom surface of the irregular extension portion to the inner bottom surface of the main rod is greater than zero.

[0009] Furthermore, the second shifting member is provided with an arc-shaped avoidance opening.

[0010] Furthermore, the main rod is provided with a mounting track running through both ends along its length direction, the auxiliary rod is symmetrically slid in the mounting track, two ridges are symmetrically provided on the inner wall of the mounting track, and the outer wall of the auxiliary rod is provided with a sliding groove that cooperates with the ridges.

[0011] Furthermore, the first stop members are fixedly arranged at both ends of the mounting track. The first stop members form a group of two and are symmetrically arranged on both sides of each end of the mounting track.

[0012] Furthermore, the end portion of the secondary rod extending out of the main rod is connected to an end cover, and the end surface of the end cover facing the main rod forms a barrier with the end surface of the main rod.

[0013] Compared with the prior art, the advantages of the present invention are: the present invention arranges a first gear member on the main rod and clamps the second gear member on the auxiliary rod, and the first gear member blocks the second gear member to prevent the auxiliary rod from separating from the main rod. The structure is simple, with fewer parts, easy assembly, and lower production cost. The first gear member adopts a pin or screw structure, which is easy to install and small in size. The second gear member is made of plastic, can be quickly clamped, and has low production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0015] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, without affecting the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0016] Figure 1 is a schematic structural diagram of the present invention;

[0017] Figure 2 is an exploded view of the present invention;

[0018] FIG3 is a schematic structural diagram of the assembly of the second shift member and the auxiliary lever of the present invention;

[0019] Figure 4 is a side sectional view of the present invention;

[0020] Figure 5 is a schematic structural diagram of the second shift member of the present invention;

[0021] As shown in the figure, 1 main rod, 1.1 mounting track, 1.2 convex ridge, 2 auxiliary rod, 2.1 bayonet, 2.2 slide groove, 3 first gear member, 4 second gear member, 4.1 flat extension part, 4.2 buckle, 4.3 irregular extension part, 4.4 arc-shaped avoidance opening, 5 end cover. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with specific implementation methods.

[0023] In the description of the present invention, 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 to indicate directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0024] 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 specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0025] In this utility model, 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, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0026] In the present invention, 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 intermediary. 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.

[0027] As shown in Figures 1-5, the utility model provides a simple curtain telescopic track that can prevent derailment, comprising a main rod 1 and a secondary rod 2 symmetrically slidably connected to the two ends of the main rod 1, an anti-derail assembly is provided between the main rod 1 and the secondary rod 2, the anti-derail assembly comprises a first gear 3 connected with the main rod 1 and a second gear 4 connected with the secondary rod 2, the first gear 3 is fixedly arranged at the two ends of the main rod 1 to block the second gear 4, the second gear 4 is clamped on the end of the secondary rod 2 that extends into the main rod 1 and slides synchronously with the secondary rod 2, the end of the secondary rod 2 connected to the second gear 4 can slide from the midpoint of the main rod 1 to the position where the second gear 4 and the first gear 3 resist, thereby realizing the telescopic movement of the secondary rod 2 relative to the main rod 1 and preventing the secondary rod 2 from separating from the main rod 1.

[0028] The first shifting member 3 is a pin or a screw, which has a simple structure and is convenient and quick to assemble.

[0029] Among them, the second gear member 4 is made of plastic, with a simple structure and low production cost. A flat extension portion 4.1 is provided on the top of the second gear member 4, and a buckle 4.2 is provided on the end of the flat extension portion 4.1 facing the auxiliary rod 2. The auxiliary rod 2 is provided with a bayonet 2.1 that cooperates with the buckle 4.2. Through the engagement of the buckle 4.2 with the bayonet 2.1, it can be installed by hand, thereby improving assembly efficiency.

[0030] 4 and 5 , an irregular extension portion 4.3 is symmetrically provided below the second shift member 4. Part of the outer circumferential surface of the irregular extension portion 4.3 fits with the auxiliary rod 2 and has a matching shape. Another part of the outer circumferential surface of the irregular extension portion 4.3 fits with the main rod 1 and has a matching shape. The end face of the irregular extension portion 4.3 is used to block the first shift member 3. The distance from the bottom surface of the irregular extension portion 4.3 to the inner bottom surface of the main rod 1 is greater than zero, thereby avoiding friction, reducing wear and extending service life.

[0031] Among them, the second gear member 4 is provided with an arc-shaped avoidance opening 4.4 for avoiding the pull rope passing through the main rod 1 (not shown in the figure), and the midpoint of the main rod 1 is provided with a rope hole for passing the pull rope. When the auxiliary rods 2 on both sides slide close to each other, the arc-shaped avoidance openings 4.4 on the two second gear members 4 are combined into a circular hole to avoid the pull rope passing through the midpoint.

[0032] Among them, the main rod 1 is provided with a mounting track 1.1 running through both ends along its length direction, and the auxiliary rod 2 is symmetrically slid in the mounting track 1.1. Two convex ridges 1.2 are symmetrically provided on the inner wall of the mounting track 1.1, and a slide groove 2.2 cooperating with the convex ridge 1.2 is provided on the outer wall of the auxiliary rod 2. The slide groove 2.2 and the convex ridge 1.2 are engaged to play a sliding guide role, ensuring that the auxiliary rod 2 can slide smoothly left and right in the main rod 1, avoiding abnormal noise caused by assembly gaps, and having a better texture.

[0033] The first stoppers 3 are fixedly arranged at both ends of the mounting track 1.1. Two first stoppers 3 form a group and are symmetrically arranged on both sides of each end of the mounting track 1.1. The symmetrical installation on both sides provides a better blocking effect.

[0034] Among them, the end of the auxiliary rod 2 extending out of the main rod 1 is connected to an end cover 5, and the end surface of the end cover 5 facing the main rod 1 forms a barrier with the end surface of the main rod 1, which can ensure that a part of the auxiliary rod 2 is exposed outside the main rod 1, making it convenient for the user to adjust the auxiliary rod 2 to slide left and right, and the end cover 5 can also play a decorative role.

[0035] The utility model provides a first gear member 3 on the main rod 1 and clamps the second gear member 4 on the auxiliary rod 2. The first gear member 3 resists the second gear member 4 to prevent the auxiliary rod 2 from separating from the main rod 1. The utility model has a simple structure, few parts, easy assembly, and lower production cost. The first gear member 3 adopts a pin or screw structure, which is easy to install and small in size. The second gear member 4 is made of plastic, can be quickly clamped, and has low production cost. During assembly, the second gear member 4 is first clamped with the end of the auxiliary rod 2, and then the auxiliary rod 2 is slid into the main rod 1, and the first gear member 3 is installed on the end of the main rod 1. The assembly efficiency is high and the number of parts is small.

[0036] Unless otherwise specified, the materials, reagents and experimental equipment involved in the embodiments of the present invention are all commercially available products in the field of curtain accessories.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A simple curtain telescopic track capable of preventing derailment, characterized in that: The invention comprises a main rod and auxiliary rods symmetrically slidably connected to two ends of the main rod, an anti-derail assembly is arranged between the main rod and the auxiliary rod, the anti-derail assembly comprises a first stopper connected to the main rod and a second stopper connected to the auxiliary rod, the first stopper is fixedly arranged at two ends of the main rod to block the second stopper, the second stopper is clamped on an end of the auxiliary rod extending into the main rod and slides synchronously with the auxiliary rod, and the end of the auxiliary rod connected to the second stopper can slide from the midpoint of the main rod to the position where the second stopper and the first stopper abut each other.

2. A derailment-proof simple curtain telescopic track according to claim 1, characterized in that: The first stopper is a pin or a screw.

3. A derailment-proof simple curtain telescopic track according to claim 1, characterized in that: The second shifting member is made of plastic, a flat plate-shaped extension portion is arranged above the second shifting member, a buckle is arranged at the end of the flat plate-shaped extension portion facing the auxiliary rod, and a bayonet matched with the buckle is arranged on the auxiliary rod.

4. A simple curtain telescopic track capable of preventing derailment according to claim 3, characterized in that: An irregular extension portion is symmetrically provided below the second shifting member, a portion of the outer circumferential surface of the irregular extension portion is matched with the auxiliary rod, another portion of the outer circumferential surface of the irregular extension portion is matched with the main rod, the end surface of the irregular extension portion is used to block the first shifting member, and the distance from the bottom surface of the irregular extension portion to the inner bottom surface of the main rod is greater than zero.

5. A derailment-proof simple curtain telescopic track according to claim 3, characterized in that: The second shifting member is provided with an arc-shaped avoidance opening.

6. A derailment-proof simple curtain telescopic track according to claim 1, characterized in that: The main rod is provided with a mounting track running through both ends along its length direction, the auxiliary rod is symmetrically slidably connected in the mounting track, two convex ridges are symmetrically arranged on the inner wall of the mounting track, and the outer wall of the auxiliary rod is provided with a sliding groove matching the convex ridges.

7. A derailment-proof simple curtain telescopic track according to claim 6, characterized in that: The first stop members are fixedly arranged at two ends of the mounting track. Two of the first stop members form a group and are symmetrically arranged on both sides of each end of the mounting track.

8. The derailment-proof simple curtain telescopic track according to claim 1, characterized in that: The end portion of the secondary rod extending out of the main rod is connected with an end cover, and the end surface of the end cover facing the main rod forms a block with the end surface of the main rod.

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