Measuring tape deceleration structure
By introducing a deceleration assembly of flywheel plates and impact ribs into the steel tape measure, the problem of excessive recycling speed of rulers is solved, and safety is improved.
Patent Information
- Application Number
- CN202422657911.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-10-31
AI Technical Summary
During use, the steel tape tape is recycled too fast, resulting in the sharp tape having a large kinetic energy, which poses a safety hazard of cutting the hand.
A tape measure reduction structure is designed, including a flywheel plate and a speed reduction component. Through multiple collisions between the flywheel plate and the impact ribs, energy absorption and buffering are achieved, the rotation speed of the tape measure hub is slowed down, and the speed of the ruler belt is reduced.
It effectively reduces the speed and kinetic energy of the ruler when recycling, reduces the risk of cutting hands, and reduces the safety risks when using steel tape measure.
Smart Images
Figure CN223271777U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of measuring tools, in particular to a tape measure deceleration structure. Background Art
[0002] Steel tape measures are commonly used in daily life and work, serving as length measurement, linear positioning, and auxiliary tools. Their working principle is to measure the object with a marked tape, which then automatically retracts into its outer casing using the elasticity of a spring.
[0003] During the use of the steel tape measure, when the tape is retracted, the tape is subjected to a large force under the action of the clockwork spring, and the tape retracts at a high speed. The thin and sharp tape has a large kinetic energy, and there is a risk of cuts when a person's hand approaches the tape, which poses a great safety hazard during the use of the steel tape measure. Utility Model Content
[0004] The purpose of the utility model includes providing a tape measure deceleration structure, which can reduce the safety hazards during the use of the steel tape measure.
[0005] The embodiment of the present utility model can be implemented as follows:
[0006] In a first aspect, the present invention provides a tape measure deceleration structure, comprising a tape measure, a housing, a tape measure hub, and a winding member, wherein the tape measure hub is rotatably disposed within the housing, the tape measure is wound onto the tape measure hub, the winding member is disposed within the housing and connected to the tape measure hub, and the winding member is used to drive the tape measure hub to rotate and wind up the tape measure; wherein the winding member further comprises:
[0007] A flywheel plate, which is arranged on the hub of the measuring tape;
[0008] The deceleration assembly is arranged inside the shell. When the tape measure hub rotates, the flywheel plate collides with the deceleration assembly, and the deceleration assembly buffers and decelerates the tape measure hub.
[0009] In an optional embodiment, the deceleration assembly includes an impact rib and a reset member. The impact rib is rotatably arranged in the housing, the impact rib extends toward the tape measure hub, and the reset member is connected to the impact rib. The reset member enables the impact rib to always have a tendency to rotate toward the tape measure hub.
[0010] In an optional embodiment, the reset member includes a rotating shaft, a rotating portion and an elastic portion. The rotating shaft is arranged in the housing and is located on one side of the tape measure hub. The rotating portion is rotatably arranged on the rotating shaft. The impact rib is arranged on the rotating portion. The elastic portion is connected to the rotating portion. The elastic portion enables the rotating portion to always have a tendency to rotate until the impact rib extends toward the tape measure hub.
[0011] In an optional embodiment, the elastic portion includes a torsion spring, one end of the torsion spring is connected to the rotating shaft, and the other end of the torsion spring is connected to the rotating portion.
[0012] In an optional embodiment, a slope is provided on the side of the impact rib facing away from the rotation direction of the tape measure hub.
[0013] In an optional embodiment, two flywheel plates are arranged opposite to each other on the tape measure hub.
[0014] In an optional embodiment, a slope is provided on a side of the flywheel plate that is away from the rotation direction of the tape measure hub.
[0015] In an optional embodiment, at least two impact ribs are spaced apart on the rotating portion.
[0016] In an optional embodiment, the winding member includes a fixed shaft and a coil spring. The fixed shaft is fixedly arranged in the outer shell, the tape measure hub is coaxially rotated on the fixed shaft, the inner end of the coil spring is connected to the fixed shaft, and the outer end of the coil spring is connected to the tape measure hub.
[0017] In an optional embodiment, a ruler hook is provided at one end of the ruler tape located outside the housing.
[0018] The beneficial effects of the tape measure deceleration structure provided by the embodiment of the utility model include:
[0019] When the tape measure hub rotates, it collides with the deceleration component multiple times. The deceleration component absorbs and buffers the energy of the tape measure hub, thereby slowing down the tape measure hub. This can, to a certain extent, prevent the tape from being wound too quickly and the kinetic energy of the tape from being too large when it is wound, thereby reducing the risk of cutting your hands when the tape is wound, and thus reducing safety hazards when using the steel tape measure. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.
[0021] Figure 1 A schematic structural diagram of the tape measure deceleration structure provided in this embodiment;
[0022] Figure 2 This is a schematic structural diagram of the deceleration component in the tape measure deceleration structure provided in this embodiment;
[0023] Figure 3 Schematic diagram of the structure of a tape measure deceleration structure provided for some other optional embodiments.
[0024] Icons: 100-tape measure; 110-hook; 200-housing; 300-tape measure hub; 400-rewinding member; 410-fixed shaft; 420-coil spring; 500-flywheel plate; 600-deceleration assembly; 610-impact rib; 620-reset member; 621-rotating shaft; 622-rotating part; 623-elastic part. DETAILED DESCRIPTION
[0025] The steel tape measure is a common measuring tool used in daily life and work. The operator pulls out the tape and uses it to measure the length of the object being measured, locate the object in a straight line, or use it as an auxiliary tool. After use, the spring inside the tape rewinds the tape back into the outer casing. The steel tape measure is compact, lightweight, and easy to carry. It's also easy to operate: simply pull it out and it automatically rewinds back into the outer casing. Therefore, steel tape measures are widely used in daily life, construction, and other scenarios.
[0026] The tape of a steel tape measure is generally made of steel strip. When the steel tape measure is recovered after use, the tape is subjected to a large force under the action of the clockwork spring. The recovery speed of the tape tends to accelerate during recovery, which makes the recovery speed of the tape faster. The thin and sharp tape has a large kinetic energy during recovery. At this time, there is a risk of cuts when people approach the tape.
[0027] In response to the above problems, the present invention provides a tape measure deceleration structure, which can decelerate the tape when the tape is recovered, so that the tape maintains a lower speed during recovery and reduces the kinetic energy of the tape recovery, thereby improving the problem of greater safety hazards during the above-mentioned tape recovery.
[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.
[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.
[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.
[0031] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.
[0032] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.
[0033] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.
[0034] The overall structure, working principle and technical effects of the tape measure deceleration structure provided by the utility model are described in detail below through embodiments and in conjunction with the accompanying drawings.
[0035] Please refer to Figure 1 and Figure 2 The tape measure deceleration structure provided by the present invention is applied to a steel tape measure and is used to decelerate the tape 100 when the steel tape measure is wound up.
[0036] Please refer to Figure 1-Figure 3 When the tape 100 is pulled out from the measuring tape, the tape 100 drives the measuring tape hub 300 to rotate. Figure 1 and Figure 3 When the tape 100 is loosened, the measuring tape hub 300 rotates under the action of the winding member 400, and rotates in the counterclockwise direction. Figure 1 and Figure 3 Based on this, the rotation direction of the tape measure hub 300 is defined as the rotation direction of the tape measure hub 300 when the tape measure hub 300 rewinds the tape 100, that is, Figure 1 and Figure 3 Clockwise direction in .
[0037] The tape measure deceleration mechanism includes a tape 100, a housing 200, a tape hub 300, and a take-up element 400. The housing 200 comprises two corresponding hollow shells, removably connected by bolts. The interior of the housing 200 provides space for mounting components such as the tape 100. The tape hub 300 is rotatably mounted within the housing 200. The tape 100, a thin steel strip, is wound around the outside of the tape hub 300. The take-up element 400 is mounted within the housing 200 and connected to the tape hub 300. The take-up element 400 is used to drive the tape hub 300 to rotate, thereby reeling the tape 100 around the outside of the tape hub 300. The tape measure deceleration mechanism also includes a flywheel plate 500 and a deceleration assembly 600. The flywheel plate 500 is mounted on the tape hub 300 and protrudes from the hub 300. The deceleration assembly 600 is arranged inside the housing 200. When the tape measure hub 300 rotates and reels the tape 100, the flywheel plate 500 rotates with the rotation of the tape measure hub 300. The flywheel plate 500 collides with the deceleration assembly 600 during the rotation. During the collision, the deceleration assembly 600 absorbs energy from the tape measure hub 300, thereby buffering and decelerating the tape measure hub 300.
[0038] By providing the flywheel plate 500 and the reduction assembly 600, the tape measure hub 300 collides with the reduction assembly 600 multiple times during rotation. The reduction assembly 600 absorbs and buffers the tape measure hub 300, thereby slowing down the tape measure hub 300. This can, to a certain extent, prevent the tape 100 from winding too fast and generating too much kinetic energy during winding, reducing the risk of hand cuts during winding and thus alleviating safety hazards when using a steel tape measure.
[0039] Please refer to Figure 1 Furthermore, the winding member 400 includes a fixed shaft 410 and a coil spring 420. The fixed shaft 410 is fixedly mounted on the housing 200 and is located at the axis of the housing 200. The tape measure hub 300 is rotatably mounted on the fixed shaft 410. The coil spring 420 is mounted inside the tape measure hub 300. The inner end of the coil spring 420 is fixedly connected to the fixed shaft 410, and the outer ring of the coil spring 420 is fixedly connected to the tape measure hub 300. When the tape 100 on the tape measure hub 300 is pulled out of the housing 200 (i.e. Figure 1 When the tape measure hub 300 rotates counterclockwise), the coil spring 420 is wound and generates elastic force on the tape measure hub 300, so that the tape measure hub 300 has the function of driving the tape 100 to wind up (i.e. Figure 1 The middle tape measure hub 300 rotates clockwise).
[0040] Furthermore, a hook 110 is installed at one end of the tape 100 outside the housing 200. The hook 110 is arranged perpendicular to the length direction of the tape 100. On the one hand, the hook 110 facilitates the clamping of one end of the tape 100 onto the object to be measured, thereby facilitating the measurement of the object to be measured; on the other hand, when the tape 100 is fully retracted, the hook 110 conflicts with the housing 200, and the hook 110 can prevent the tape 100 from being completely retracted into the housing 200 and unable to be pulled out.
[0041] Please refer to Figure 1 and Figure 2 In some optional embodiments, the deceleration assembly 600 includes a striking rib 610 and a reset member 620. The striking rib 610 is rotatably mounted within the housing 200 and is located on one side of the tape measure hub 300. The striking rib 610 extends toward the tape measure hub 300. When the tape measure hub 300 rotates, the flywheel plate 500 on the tape measure hub 300 collides with the striking rib 610. The reset member 620 is disposed within the housing 200 and connected to the striking rib 610. The reset member 620 ensures that the striking rib 610 always has a tendency to rotate toward the tape measure hub 300.
[0042] When the tape measure hub 300 rotates, the flywheel plate 500 strikes the impact rib 610, driving the impact rib 610 to rotate. After the flywheel plate 500 rotates and disengages from the impact rib 610, the impact rib 610 is reset by the reset member 620. After the tape measure hub 300 completes one rotation, the flywheel plate 500 strikes the impact rib 610 again. This repeated collision and friction between the flywheel plate 500 and the impact rib 610 continuously transfers kinetic energy from the tape measure hub 300 to the impact rib 610, thereby decelerating the tape measure hub 300.
[0043] Please refer to Figure 1 and Figure 2 Furthermore, in some optional embodiments, to facilitate driving the impact rib 610 to reset, the reset member 620 includes a rotating shaft 621, a rotating portion 622, and an elastic portion 623. The rotating shaft 621 is disposed within the housing 200 and located on one side of the tape measure hub 300. The rotating shaft 621 is arranged parallel to the fixed shaft 410. The rotating portion 622 is a hollow cylinder and is rotatably mounted on the rotating shaft 621. The impact rib 610 is fixedly mounted on the side of the rotating portion 622 and extends toward the tape measure hub 300. The elastic portion 623 is connected to the rotating portion 622, which ensures that the rotating portion 622 always has the tendency to rotate until the impact rib 610 extends toward the tape measure hub 300.
[0044] Please refer to Figure 1 and Figure 2In some optional embodiments, the elastic portion 623 includes a torsion spring, which is sleeved and mounted outside the rotating shaft 621 and located inside the rotating portion 622. A notch is defined in the rotating portion 622. One end of the torsion spring is fixedly connected to the rotating shaft 621, and the other end of the torsion spring extends outside the rotating portion 622 through the notch. When the torsion spring is in its initial state, the impact rib 610 extends toward the tape measure hub 300. When the flywheel plate 500 strikes the impact rib 610, the rotating portion 622 rotates and drives one end of the torsion spring to rotate, thereby compressing the torsion spring. The torsion spring causes the rotating portion 622 to tend to rotate to its initial position. In other optional embodiments, the elastic portion 623 may also be a spring or elastic rubber.
[0045] For further information, please refer to Figure 1 and Figure 3 In order to facilitate pulling the tape 100 out of the housing 200, an inclined surface is provided on the end of the impact rib 610 that is away from the rotation direction of the tape measure hub 300. The rotation direction of the tape measure hub 300 is the rotation direction of the tape measure hub 300 when the tape measure hub 300 is wound up under the action of the winding spring 420, that is, Figure 1 and Figure 3 Since the end of the impact rib 610 that faces away from the rotation direction of the tape measure hub 300 is provided with an inclined surface, when the tape 100 is pulled out, the tape measure hub 300 rotates counterclockwise. At this time, the flywheel plate 500 hits the inclined surface on the impact rib 610, making it easier to pull out the tape 100. When the tape measure hub 300 rewinds the tape 100, the tape measure hub 300 is in a Figure 1 and Figure 3 The flywheel plate 500 directly collides with the impact rib 610 vertically, so that the deceleration effect of the tape measure hub 300 on the tape 100 when the tape measure hub 300 is wound is more obvious.
[0046] For further information, please refer to Figure 3 In other optional embodiments, a bevel is also provided on the side of the flywheel plate 500 that is away from the rotation direction of the tape measure hub 300, so that when the tape 100 is pulled out, the bevel on the flywheel plate 500 contacts the bevel on the impact rib 610, and the displacement of the impact rib 610 is small, making it more convenient to pull out the tape 100.
[0047] For further information, please refer to Figure 1 and Figure 3 In some optional embodiments, in order to further improve the deceleration effect of the tape measure hub 300 when retracting the tape measure tape 100, two flywheel plates 500 are relatively arranged on the tape measure hub 300. The arrangement of the two flywheel plates 500 allows the tape measure hub 300 to collide with the impact rib 610 twice when rotating one circle, thereby improving the transfer effect of the kinetic energy of the tape measure hub 300, and further improving the deceleration effect when the tape measure tape 100 is recovered.
[0048] In some other optional embodiments, please refer to Figure 1 and Figure 3 At least two impact ribs 610 are spaced apart on the rotating portion 622. By providing multiple impact ribs 610, when the rotating portion 622 is impacted by the tape measure hub 300 and rotates, the impacted impact ribs 610 deflect out of the tape measure hub 300, while the remaining impact ribs 610 that have not been impacted rotate back into the tape measure hub 300. This prevents a situation where, when the tape 100 is wound too quickly, a single impact rib 610 is impacted and rotated, unable to return to its original position, preventing the subsequent flywheel plate 500 from colliding with the impact rib 610. This ensures the deceleration effect on the tape measure hub 300.
[0049] The working principle and process of the tape measure deceleration structure provided by the embodiment of the present invention are as follows: by providing a flywheel plate 500, an impact rib 610, and a reset member 620, when the tape measure hub 300 rewinds the tape 100, the flywheel plate 500 on the tape measure hub 300 collides with the impact rib 610 multiple times, causing the impact rib 610 to rotate while the reset member 620 absorbs the energy of the impact, thereby decelerating the tape measure hub 300. This can, to a certain extent, prevent the tape 100 from being wound too quickly and the kinetic energy of the tape 100 from being excessive during winding, reducing the risk of hand cuts during winding, and thus alleviating safety hazards when using a steel tape measure.
[0050] The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.
Claims
1. A tape measure deceleration structure, characterized in that: The invention comprises a measuring tape, a housing, a measuring tape hub and a winding member, wherein the measuring tape hub is rotatably disposed in the housing, the measuring tape is wound onto the measuring tape hub, the winding member is disposed in the housing and connected to the measuring tape hub, and the winding member is used to drive the measuring tape hub to rotate and wind up the measuring tape; wherein, the invention further comprises: a flywheel plate, the flywheel plate being arranged on the tape measure hub; The deceleration component is arranged inside the shell. When the tape measure hub rotates, the flywheel plate collides with the deceleration component, and the deceleration component buffers and decelerates the tape measure hub.
2. The tape measure deceleration structure according to claim 1, characterized in that: The deceleration assembly includes an impact rib and a reset member. The impact rib is rotatably arranged in the housing and extends toward the tape measure hub. The reset member is connected to the impact rib. The reset member enables the impact rib to always have a tendency to rotate toward the tape measure hub.
3. The tape measure deceleration structure according to claim 2, characterized in that: The reset member includes a rotating shaft, a rotating part and an elastic part. The rotating shaft is arranged in the housing and is located on one side of the tape measure hub. The rotating part is rotatably arranged on the rotating shaft. The impact rib is arranged on the rotating part. The elastic part is connected to the rotating part. The elastic part enables the rotating part to always have a tendency to rotate until the impact rib extends toward the tape measure hub.
4. The tape measure deceleration structure according to claim 3, characterized in that: The elastic part includes a torsion spring, one end of the torsion spring is connected to the rotating shaft, and the other end of the torsion spring is connected to the rotating part.
5. The tape measure deceleration structure according to claim 2, characterized in that: The impact rib is provided with an inclined surface on a side away from the rotation direction of the tape measure hub.
6. The tape measure deceleration structure according to claim 1, characterized in that: Two flywheel plates are arranged opposite to each other on the tape measure hub.
7. The tape measure deceleration structure according to claim 1, characterized in that: The flywheel plate is provided with an inclined surface on one side facing away from the rotation direction of the tape measure hub.
8. The tape measure deceleration structure according to claim 3, characterized in that: At least two impact ribs are arranged on the rotating part at intervals.
9. The tape measure deceleration structure according to claim 1, characterized in that: The winding member includes a fixed shaft and a coil spring. The fixed shaft is fixedly arranged in the outer shell. The tape measure hub is coaxially rotatably arranged on the fixed shaft. The inner end of the coil spring is connected to the fixed shaft, and the outer end of the coil spring is connected to the tape measure hub.
10. The tape measure deceleration structure according to claim 1, characterized in that: A ruler hook is provided at one end of the ruler tape located outside the shell.