Zipper pull with quick lock mandrel

Abstract

The utility model discloses a kind of easy-to-open treasure with fast lock type mandrel, including base and the end cover being installed in the one end of base, the mandrel for winding or releasing banner is rotatably installed in base, and the one end of mandrel is integrally connected with limit gear to end cover;Locking mechanism and limiting arm are installed on the end cover, limiting arm one end is hinged with end cover, the other end extends to the direction of locking mechanism, and the middle section of limiting arm is provided with the limiting card thorn that is adapted with the slot width of limit gear.This easy-to-open treasure with fast lock type mandrel of the utility model, by setting locking mechanism, limiting arm in the end of base and setting limit gear in the end of mandrel, the clamping or separation of limiting card thorn on limiting arm and limit gear is controlled using the locking structure of rotation to limit or release the rotation of mandrel, to form quick locking-release structure, so that mandrel control is more quick and convenient.

Description

Technical Field

[0001] This utility model belongs to the field of roll-up banner technology, specifically relating to a roll-up banner with a quick-lock spindle. Background Technology

[0002] Currently, promotional display tools are set up in many places, such as science and technology exhibitions, train stations, and streets. Among them, roll-up banners, which are small in size, easy to use, and convenient to carry, are one of the main display tools.

[0003] However, existing roll-up banners also have some problems. Since the banner is fixed by a spring spindle when not in use, when the banner is pulled out, it usually needs to be connected and fixed to the top and hooks to prevent it from retracting. If the banner does not need to be fully pulled out or when changing the banner, the spring spindle needs to be stopped by inserting an external pin to lock it in place before other operations can continue, provided that the top of the banner is not subjected to external force. This feature limits the flexibility of use and ease of maintenance of roll-up banners, making it difficult to meet the needs of complex and ever-changing usage environments. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a roll-up banner that offers significantly improved flexibility and ease of maintenance, enabling rapid locking of the spindle.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model provides a roll-up banner with a quick-locking mandrel, including a base and an end cap installed at one end of the base. A mandrel for winding or releasing the banner is rotatably installed inside the base. A limiting gear is integrally connected to the end of the mandrel pointing towards the end cap. A locking mechanism and a limiting arm are installed on the end cap. One end of the limiting arm is hinged to the end cap, and the other end extends towards the locking mechanism. A limiting spur is provided in the middle section of the limiting arm, which is adapted to the groove width of the limiting gear. The locking mechanism includes a control unit. The control unit touches, pushes, or moves away from one end of the limiting arm as the locking mechanism rotates, thereby driving the limiting arm to rotate and controlling the limiting spur to engage or disengage from the limiting gear.

[0007] Preferably, the locking mechanism further includes a rotating part and a protruding part. Both the rotating part and the control part are located on one side of the end cover. The protruding part is fixedly mounted on the rotating part and rotates with the rotating part. An arc-shaped hole is provided on the end cover. The protruding part penetrates the end cover through the arc-shaped hole and extends to the side of the end cover away from the rotating part to serve as a switch that is easy to manually control. The curvature of the arc-shaped hole is adapted to the rotation curvature of the protruding part.

[0008] Preferably, the end cap is further provided with a limiting groove, in which a limiting spring is installed. One end of the limiting spring is fixed in the limiting groove, and the other end is connected and fixed to the limiting arm away from the hinge end. The limiting spring and the limiting pin are respectively located on both sides of the limiting arm. The limiting pin and the control unit are located on the same side of the limiting arm. Under normal conditions, the limiting spring pushes the limiting pin on the limiting arm to engage with the groove width of the limiting gear. When the control unit pushes the limiting arm, the limiting spring is compressed and the limiting pin separates from the limiting gear.

[0009] Preferably, the end cap is further provided with a reset groove, in which a reset block is slidably installed. One end of the reset block is connected to the reset groove via a reset spring, and the other end extends toward the control unit and abuts against the control unit.

[0010] Preferably, the control unit has two adjacent abutment surfaces that are distributed at an angle. When the locking mechanism is in the locked state, the control unit contacts the limiting arm and pushes the limiting arm. One of the abutment surfaces abuts against the end of the reset block. When the locking mechanism is in the open state, the control unit separates from the limiting arm and the other abutment surface abuts against the end of the reset block.

[0011] Preferably, a baffle is provided between the end cover and the base, and an avoidance hole is provided in the center of the baffle. The position of the avoidance hole is adapted to the position of the limiting gear, and the diameter of the avoidance hole is larger than the outer diameter of the limiting gear. The control unit and the limiting arm are both located on the side of the end cover close to the baffle.

[0012] Preferably, the bottom of the base is also equipped with at least one rotatable support foot.

[0013] Compared with the prior art, this utility model has the following advantages:

[0014] This utility model discloses a roll-up banner with a quick-locking spindle. By setting a locking mechanism and a limiting arm at the end of the base and a limiting gear at the end of the spindle, the rotation of the spindle is restricted or released by controlling the engagement or disengagement of the limiting pins on the limiting arm and the limiting gear through the rotating locking structure. This forms a quick-locking-release structure, making spindle control faster and more convenient, and greatly improving the flexibility of use and ease of maintenance of the roll-up banner. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a roll-up banner with a quick-lock spindle;

[0016] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 for Figure 1 A schematic diagram of the internal structure of the middle end cap.

[0018] 1-Base; 11-Mandrel; 12-Limit gear; 2-Support foot plate; 3-End cover; 31-Arc-shaped hole; 32-Locking mechanism; 321-Rotating part; 322-Control part; 323-Protrusion; 33-Limit arm; 331-Limit spur; 34-Reset groove; 341-Reset block; 342-Reset spring; 35-Limit groove; 351-Limit spring; 4-Baffle; 41-Allowing hole. Detailed Implementation

[0019] 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 intended to explain this utility model, and should not be construed as limiting this utility model.

[0020] Example

[0021] Please see Figures 1 to 3 A roll-up banner with a quick-locking mandrel includes a base 1 and an end cap 3 installed at one end of the base. A mandrel 11 for winding or releasing the banner is rotatably installed inside the base. A limiting gear 12 is integrally connected to the end of the mandrel pointing towards the end cap. A locking mechanism 32 and a limiting arm 33 are installed on the end cap 3. One end of the limiting arm is hinged to the end cap, and the other end extends toward the locking mechanism. A limiting spur 331 adapted to the groove width of the limiting gear is provided in the middle section of the limiting arm. The locking mechanism includes a control unit 322. The control unit touches, pushes, or moves away from one end of the limiting arm as the locking mechanism rotates to drive the limiting arm to rotate, thereby controlling the engagement or disengagement of the limiting spur with the limiting gear.

[0022] The locking mechanism 32 also includes a rotating part 321 and a protrusion 323. The rotating part and the control part are both located on one side of the end cover. The protrusion is fixed on the rotating part and rotates with the rotating part. An arc-shaped hole 31 is provided on the end cover. The protrusion penetrates the end cover through the arc-shaped hole and extends to the side of the end cover away from the rotating part to serve as a switch that is easy to manually control. The curvature of the arc-shaped hole is adapted to the rotation curvature of the protrusion.

[0023] The end cap 3 is also provided with a limiting groove 35, in which a limiting spring 351 is installed. One end of the limiting spring is fixed in the limiting groove, and the other end is connected and fixed to the limiting arm 33 away from the hinge end. The limiting spring and the limiting pin are located on the two sides of the limiting arm, and the limiting pin and the control unit are located on the same side of the limiting arm. Under normal conditions, the limiting spring pushes the limiting pin on the limiting arm to engage with the groove width of the limiting gear. When the control unit pushes the limiting arm, the limiting spring is compressed and the limiting pin separates from the limiting gear.

[0024] The end cap 3 is also provided with a reset groove 34, in which a reset block 341 is slidably installed. One end of the reset block is connected to the reset groove through a reset spring 342, and the other end extends toward the control unit 322 and abuts against the control unit.

[0025] The control unit 322 has two adjacent abutment surfaces that are distributed at an angle. When the locking mechanism is in the locked state, the control unit 322 contacts the limiting arm and pushes the limiting arm. One of the abutment surfaces abuts against the end of the reset block. When the locking mechanism is in the open state, the control unit separates from the limiting arm and the other abutment surface abuts against the end of the reset block.

[0026] A baffle 4 is provided between the end cover 3 and the base 1. An avoidance hole 41 is provided in the center of the baffle. The position of the avoidance hole is adapted to the position of the limiting gear 12 and the diameter of the avoidance hole is larger than the outer diameter of the limiting gear. The control unit and the limiting arm are both located on the side of the end cover close to the baffle.

[0027] At least one rotatable support foot 2 is also installed at the bottom of the base 1.

[0028] The quick-locking spindle of this embodiment works by using a protrusion 323 on the end cover 3 as a manually adjustable switch. When the spindle needs to be locked, the protrusion rotates along the arc-shaped hole 31, and the rotating part 321 and the control part 322 rotate accordingly until the control part separates from the limiting arm 33. At this time, the limiting arm moves towards the limiting gear 12 under the pressure of the limiting spring 351, and the limiting clasp 331 inserts into one of the slot widths of the limiting gear 12, thereby restricting the rotation of the limiting gear and thus achieving the purpose of locking the spindle.

[0029] Similarly, when the mandrel needs to be released, the control protrusion moves in the opposite direction, and the control unit 322 gradually comes into contact with the limiting arm and provides pressure, causing the limiting arm to move away from the limiting gear, thereby disengaging the limiting clasp from the limiting gear, eliminating interference with the limiting gear, and allowing the mandrel to rotate.

[0030] During the above adjustment process, in order to prevent the components from rotating and disengaging after release, the reset block 341 with a reset spring is used to abut against the two included surfaces of the control part 322 respectively. When the reset block abuts against the two included surfaces of the control part, they correspond to the engagement and disengagement states of the limit sprocket and the limit gear respectively. The reset block can effectively hold the control part against the spring pressure to prevent it from rotating on its own.

[0031] The beneficial effects of this utility model are: by setting a locking mechanism and a limiting arm at the end of the base and setting a limiting gear at the end of the spindle, the rotation of the spindle is restricted or released by using the rotating locking structure to control the engagement or disengagement of the limiting pins on the limiting arm and the limiting gear, thereby forming a quick locking-release structure, making the spindle control faster and more convenient, and greatly improving the flexibility of use and the convenience of maintenance of the roll-up banner.

[0032] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications and variations to the above embodiments within the scope of the present invention.

Claims

1. A roll-up banner with a quick-locking spindle, characterized in that, The device includes a base (1) and an end cap (3) installed at one end of the base. A spindle (11) for winding or releasing the banner is rotatably installed inside the base. A limiting gear (12) is integrally connected to one end of the spindle pointing towards the end cap. A locking mechanism (32) and a limiting arm (33) are installed on the end cap (3). One end of the limiting arm is hinged to the end cap, and the other end extends toward the locking mechanism. A limiting spur (331) adapted to the groove width of the limiting gear is provided in the middle section of the limiting arm. The locking mechanism includes a control unit (322). The control unit touches, pushes, or moves away from one end of the limiting arm as the locking mechanism rotates to drive the limiting arm to rotate, thereby controlling the limiting spur to engage or disengage from the limiting gear.

2. The roll-up banner with a quick-locking mandrel according to claim 1, characterized in that, The locking mechanism (32) further includes a rotating part (321) and a protruding part (323). The rotating part and the control part are both located on one side of the end cover. The protruding part is fixed on the rotating part and rotates with the rotating part. An arc-shaped hole (31) is provided on the end cover. The protruding part penetrates the end cover through the arc-shaped hole and extends to the side of the end cover away from the rotating part to serve as a switch that is easy to manually control. The arc of the arc-shaped hole is adapted to the rotation arc of the protruding part.

3. The roll-up banner with a quick-locking mandrel according to claim 2, characterized in that, The end cap (3) is also provided with a limiting groove (35), in which a limiting spring (351) is installed. One end of the limiting spring is fixed in the limiting groove, and the other end is connected and fixed to the limiting arm (33) away from the hinge end. The limiting spring and the limiting pin are located on the two sides of the limiting arm respectively. The limiting pin and the control unit are located on the same side of the limiting arm. Under normal conditions, the limiting spring pushes the limiting pin on the limiting arm to engage with the groove width of the limiting gear. When the control unit pushes the limiting arm, the limiting spring is compressed and the limiting pin separates from the limiting gear.

4. The roll-up banner with a quick-locking mandrel according to claim 3, characterized in that, The end cap (3) is also provided with a reset groove (34), in which a reset block (341) is slidably installed. One end of the reset block is connected to the reset groove through a reset spring (342), and the other end extends toward the control unit (322) and abuts against the control unit.

5. The roll-up banner with a quick-locking mandrel according to claim 4, characterized in that, The control unit (322) has two adjacent abutment surfaces that are distributed at an angle. When the locking mechanism is in the locked state, the control unit (322) contacts the limit arm and pushes the limit arm. One of the abutment surfaces abuts against the end of the reset block. When the locking mechanism is in the open state, the control unit separates from the limit arm and the other abutment surface abuts against the end of the reset block.

6. The roll-up banner with a quick-locking mandrel according to claim 1, characterized in that, A baffle (4) is provided between the end cap (3) and the base (1). A clearance hole (41) is provided in the center of the baffle. The position of the clearance hole is adapted to the position of the limiting gear (12) and the diameter of the clearance hole is larger than the outer diameter of the limiting gear. The control unit and the limiting arm are both located on the side of the end cap close to the baffle.

7. The roll-up banner with a quick-locking mandrel according to claim 1, characterized in that, The bottom of the base (1) is also equipped with at least one rotatable support foot (2).

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