Measuring tape capable of preventing hand from being cut

Abstract

The utility model relates to an anti-hand-cutting measuring tape, which comprises a measuring tape body and a protection mechanism arranged at the bottom of an outlet of the measuring tape body. The protection mechanism is slidably connected with a telescopic bottom plate through a limiting sliding groove. The two sides of the bottom plate are hinged to a first side plate and a second side plate which can be automatically unfolded through spring rotating shafts. When unfolded, the side plates are limited by the side stop blocks to form a 90-degree U-shaped protection channel, the edge of the extension scale is wrapped, and a user is prevented from being cut. During retracting, the connecting rope is matched with the hanging button to lock the telescopic bottom plate, and meanwhile, the side plates can be folded and inserted into the sliding grooves to be fixed. According to the design, through a dynamic protection channel and a double-locking mechanism, measurement precision is guaranteed, meanwhile, whole-course safety protection in the winding process is achieved, the problems that a traditional measuring tape is prone to being cut, and a protection structure interferes measurement are solved, and the measuring tape has operation convenience and structural reliability at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to measuring tool technical field, concretely is a kind of anti-cut hand tape. BACKGROUND

[0002] Traditional tape measure as basic measuring tool, its structure is usually composed of tape measure shell, elastic winding device and the metal scale band with scale.In use, the scale band is retracted through the shell outlet to realize the measuring function, but when retracted, due to the sharp edge of metal scale band and fast winding speed (commonly up to 0.8-1.5m / s), it is easy to cause finger cut due to user's mis-touch or improper operation.

[0003] In view of the above-mentioned pain point, a protection mechanism integrating mechanical linkage and dynamic constraint is proposed, which realizes full-path wrapping protection during winding process by constructing expandable / foldable three-dimensional protection channel on the scale band motion track, fundamentally eliminates the risk of cutting, and ensures zero interference of measurement function. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of anti-cut hand tape to solve the problems of prior art.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions: an anti-cut hand tape, comprising a tape body and a protection mechanism, the inside of the tape body is elastically wound with a retractable ruler, the retractable ruler is retracted and expanded for measurement through the outlet, the protection mechanism is located at the bottom of the outlet, one side of the protection mechanism is provided with a limiting sliding groove, a retractable bottom plate is slidingly connected inside the limiting sliding groove, the two sides of the retractable bottom plate are respectively hinged with a first side plate and a second side plate through a spring shaft, the first side plate and the second side plate are rotated to open under the action of the spring shaft, and are respectively at a predetermined angle with the retractable bottom plate, the retractable ruler is located inside the retractable bottom plate, the first side plate and the second side plate for retraction and use, the retractable ruler in retracted state is limited to avoid cutting the user with the retractable ruler.

[0006] In the present application, by the cooperative design of the protection mechanism and the tape body, the safety hazard of traditional tape in the process of retraction due to sharp edges is effectively solved. Specifically, the protection mechanism realizes dynamic protection of the retractable ruler through the telescopic mechanical structure and multidirectional constraint design: when the retractable ruler is extended from the outlet, the telescopic bottom plate slides out in the limiting sliding groove, and the arc-shaped side plates hinged by the spring shaft on both sides are automatically unfolded to 90 degrees with the bottom plate, forming a U-shaped protection channel to completely wrap the sharp edges of the retractable ruler; when the retractable ruler is retracted, the side plates maintain the perpendicular angle with the bottom plate under the action of the spring shaft, and the arc-shaped plate surface limits the upward movement of the retractable ruler, and the side stopper provides rigid limiting to prevent the side sliding of the retractable ruler. Especially through the linkage design of the connecting rope and the hanging button, the position of the telescopic bottom plate can be quickly fixed after the measurement is completed, and the locking function of the folded side plates inserted into the sliding groove is matched, forming a double protection mechanism to fundamentally eliminate the risk of cutting caused by accidental touch or rapid winding while ensuring the measurement accuracy. The scheme has the advantages of convenient operation and structural reliability, and realizes the unity of safety protection and functional practicability.

[0007] In a specific embodiment, the telescopic bottom plate is fixed with a side stopper on both sides, and the side stopper limits the opening state of the first side plate and the second side plate respectively, ensuring that the first side plate and the second side plate are rotated and opened under the action of the spring shaft, and respectively form a right angle with the telescopic bottom plate.

[0008] In a specific embodiment, the first side plate and the second side plate are both arc-shaped plates, which are used to limit the upward movement of the retractable ruler inside the telescopic bottom plate, the first side plate and the second side plate.

[0009] In a specific embodiment, the inner side of the telescopic bottom plate is provided with a limiting groove, the limiting groove is internally limited and slidably connected with a limiting sliding block, and the bottom end of the limiting sliding block is fixedly connected with a connecting rope.

[0010] In a specific embodiment, the top end of the tape body is fixedly connected with a hanging button, and one end of the connecting rope can be sleeved and fixed outside the hanging button, which is used to fix the telescopic bottom plate.

[0011] In a specific embodiment, the first side plate and the second side plate can be inserted into the limiting sliding groove in the folded state for fixation.

[0012] The beneficial effects of the present application are as follows:

[0013] This invention features an expandable U-shaped protective channel design. When the telescopic ruler extends, a spring-driven shaft automatically expands the first and second side plates to 90°, forming a guide channel together with the telescopic base plate. This design ensures the ruler can extend and retract freely while also providing three-dimensional constraint on the ruler's edge through the arc-shaped inner walls of the side plates, reducing the risk of cuts. During measurement, the protective channel extends synchronously with the ruler, completely eliminating interference from the protective structure to the measurement operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model in its first state.

[0015] Figure 2 This is a schematic diagram of the second state of the overall structure of this utility model.

[0016] Figure 3 This is the utility model Figure 2 A schematic diagram of the structure at point A.

[0017] Figure 4 This is a schematic diagram of the third state of the overall structure of this utility model.

[0018] Figure 5 This is a schematic diagram of the fourth state of the overall structure of this utility model.

[0019] Figures 1 to 5 In the middle: 1. Measuring tape body; 2. Protective mechanism; 11. Telescopic ruler; 12. Hook; 21. Limiting groove; 22. Telescopic base plate; 220. Side block; 221. First side plate; 222. Second side plate; 223. Limiting groove; 224. Limiting slider; 2241. Connecting rope. Detailed Implementation

[0020] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0021] like Figures 1 to 5The utility model provides an anti-cut hand tape measure, including tape measure body 1 and protection mechanism 2, the inside elastic winding of tape measure body 1 has telescopic ruler 11, and telescopic ruler 11 carries out telescopic measurement use through the export, and protection mechanism 2 is located at the bottom of the export, and one side of protection mechanism 2 is equipped with limiting sliding slot 21, and the inside limiting sliding connection of limiting sliding slot 21 has telescopic bottom plate 22, and the both sides of telescopic bottom plate 22 are hinged with first side plate 221 and second side plate 222 through spring pivot respectively, and first side plate 221 and second side plate 222 are rotated and open under the action of spring pivot, and are with telescopic bottom plate 22 respectively at the predetermined angle, and telescopic ruler 11 is located in the inside of telescopic bottom plate 22, first side plate 221, second side plate 222 and carries out telescopic use, and the telescopic ruler 11 in retracted state is limited, avoids telescopic ruler 11 to cut the user.

[0022] The both sides of telescopic bottom plate 22 are fixed with side stop 220, and side stop 220 is limited respectively to the open state of first side plate 221 and second side plate 222, ensures that first side plate 221 and second side plate 222 are rotated and open under the action of spring pivot, and are with telescopic bottom plate 22 respectively at ninety degrees. First side plate 221 and second side plate 222 are all set up as arc plate, are used to limit telescopic ruler 11 in the inside of telescopic bottom plate 22, first side plate 221, second side plate 222, prevent upward movement. The inside of telescopic bottom plate 22 is equipped with limiting groove 223, and limiting groove 223 is limited sliding connection with limiting slider 224 in the inside, and the bottom of limiting slider 224 is fixedly connected with connecting rope 2241. The top one side of tape measure body 1 is fixedly connected with hanging button 12, and one end of connecting rope 2241 can be set with fixedly in the outside of hanging button 12, is used for fixing telescopic bottom plate 22. First side plate 221 and second side plate 222 can be inserted in the inside limiting sliding slot 21 and are fixed in the folded state.

[0023] Summarized above, the utility model has the following working principle:

[0024] I, standby state

[0025] Protection mechanism 2 folds and fixes

[0026] First side plate 221 and second side plate 222 are folded by hand, together with telescopic bottom plate 22, are completely stored in limiting sliding slot 21, are extruded in the inside limiting sliding slot 21 under the action of spring pivot, form compact structure, and one end of connecting rope 2241 is hung in the outside of hanging button 12, fixes telescopic bottom plate 22.

[0027] II, measurement deployment stage

[0028] Side plate automatic deployment process

[0029] When telescopic bottom plate 22 slides out 8 centimeters in length, spring pivot releases torque.

[0030] The first side plate 221 and the second side plate 222 are rotated and unfolded until the side stopper 220 contacts the side of the bottom plate.

[0031] The side plate unfolding angle is accurately controlled to 90° by the limiting surface of the side stopper 220, forming a U-shaped protective channel.

[0032] The telescopic ruler 11 is pulled out to trigger the linkage

[0033] When the user pulls the telescopic ruler 11 outward, it is extended through the U-shaped protective channel.

[0034] Three, measurement operation state

[0035] Protective channel stable work

[0036] When the telescopic ruler 11 moves in the U-shaped channel, the side plate is constrained by the limiting.

[0037] Four, measurement completion and recovery phase

[0038] Automatic recovery process

[0039] After the user releases the telescopic ruler 11, the coil spring drives it to be recovered inside the U-shaped protective channel.

[0040] During the recovery process of the telescopic ruler 11, the first side plate 221 and the second side plate 222 remain in the 90° unfolded state, and the torque of the spring shaft maintains the wrapping of the telescopic ruler 11. Because it is in the unfolded state, the first side plate 221 and the second side plate 222 cannot be retracted into the limiting sliding groove 21.

[0041] Five, complete recovery and locking phase

[0042] Connection rope 2241 fixing operation

[0043] When the telescopic bottom plate 22 is completely reset, the limiting sliding block 224 reaches the end of the limiting slot 223, and at this time the connection rope 2241 is stretched.

[0044] The user puts the snap buckle at the end of the connection rope into the hanging button 12, completing the mechanical locking.

[0045] Double insurance design

[0046] Physical locking: The tension of the connection rope makes the telescopic bottom plate 22 unable to slide out.

[0047] Structural locking: Manually fold the side plate and insert it into the limiting sliding groove 21. Under the elastic action of the spring shaft in the sliding groove, it is pressed against the inner wall of the limiting sliding groove 21 for fixation.

[0048] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cut-resistant tape measure comprising a tape measure body (1) and a guard mechanism (2), characterized in that: The inside of the tape body (1) is elastically rolled up with a telescopic ruler (11), the telescopic ruler (11) is used for telescopic measurement through an outlet, the protection mechanism (2) is located at the bottom of the outlet, one side of the protection mechanism (2) is provided with a limiting sliding groove (21), the inside of the limiting sliding groove (21) is slidably connected with a telescopic bottom plate (22), the two sides of the telescopic bottom plate (22) are respectively hinged with a first side plate (221) and a second side plate (222) through spring rotating shafts, the first side plate (221) and the second side plate (222) are rotated to open under the action of the spring rotating shafts, and are respectively at a predetermined angle with the telescopic bottom plate (22), the telescopic ruler (11) is located inside the telescopic bottom plate (22), the first side plate (221) and the second side plate (222) for telescopic use, the telescopic ruler (11) in the retracted state is limited, and the user is prevented from being cut by the telescopic ruler (11).

2. A cut-resistant tape measure according to claim 1, wherein: The two sides of the telescopic bottom plate (22) are fixedly connected with side stop blocks (220), the side stop blocks (220) limit the open state of the first side plate (221) and the second side plate (222) respectively, and ensure that the first side plate (221) and the second side plate (222) are rotated to open under the action of the spring rotating shafts and are respectively at ninety degrees with the telescopic bottom plate (22).

3. A cut-resistant tape measure according to claim 2, wherein: The first side plate (221) and the second side plate (222) are both arranged as arc-shaped plates, which are used for limiting the telescopic ruler (11) inside the telescopic bottom plate (22), the first side plate (221) and the second side plate (222), and preventing upward movement.

4. A cut-resistant tape measure according to claim 1, wherein: The inside of the telescopic bottom plate (22) is provided with a limiting groove (223), the inside of the limiting groove (223) is slidably connected with a limiting sliding block (224), and the bottom end of the limiting sliding block (224) is fixedly connected with a connecting rope (2241).

5. A cut-resistant tape measure according to claim 4, wherein: The top end of the tape body (1) is fixedly connected with a hanging button (12), one end of the connecting rope (2241) can be sleeved and fixed outside the hanging button (12), and the telescopic bottom plate (22) is fixed.

6. A cut-resistant tape measure according to claim 1, wherein: The first side plate (221) and the second side plate (222) can be inserted into the inside of the limiting sliding groove (21) for fixation in the folded state.

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