Noise-reduction speed-reduction measuring tape

Abstract

The utility model provides a noise-reduction speed-reduction measuring tape, which relates to the technical field of measuring tapes and comprises a shell, a damping part, a hub and a centrifugal part. Wherein an inner cavity of the shell is provided with an abutting part, and at least part of the damping piece is correspondingly attached to the abutting part. On the basis, the abutting part can play a role in guiding and supporting the damping piece. On the basis, the hub is located in the shell and rotationally connected with the shell. The centrifugal part is in sliding connection with the hub and used for colliding with the damping part under the condition that the rotating speed of the hub reaches the preset rotating speed. It can be understood that the damping piece can obviously reduce vibration and noise in the system by absorbing and converting energy, and the user experience is improved. Based on this, the noise reduction and speed reduction measuring tape provided by the utility model reduces vibration transmission, reduces noise, and improves the use feeling of a user.

Description

Technical Field

[0001] The utility model relates to the technical field of tape measures, in particular to a noise-reducing and speed-reducing tape measure. Background Art

[0002] In the prior art, when the tape measure is quickly retracted or extended, a wedge in the centrifugal reduction mechanism strikes the inside of the housing, thereby slowing the hub.

[0003] However, the above structure not only causes loud noises but also causes strong vibrations in the hands. If the user uses this tape measure for a long time, the user may feel discomfort in the hand, and may be at risk of fatigue and injury. Utility Model Content

[0004] The purpose of the utility model includes providing a noise-reducing and speed-reducing tape measure, which can buffer the impact of the centrifugal component through the damping component, so that the impact noise and vibration are greatly reduced, and the user comfort is improved.

[0005] The embodiment of the present utility model can be implemented as follows:

[0006] In a first aspect, the utility model provides a noise-reducing and speed-reducing tape measure, comprising:

[0007] A housing, wherein an inner cavity of the housing is provided with a supporting portion;

[0008] A damping member, wherein at least a portion of the damping member is disposed in contact with the abutting portion;

[0009] A wheel hub is located inside the housing and is rotatably connected to the housing;

[0010] The centrifugal member is slidably connected to the wheel hub and is used to collide with the damping member when the rotational speed of the wheel hub reaches a preset rotational speed.

[0011] In an optional embodiment, the damping member includes a collision portion and a positioning portion that are connected to each other, the positioning portion is connected to the shell, and the collision portion and the abutting portion are correspondingly arranged.

[0012] In an optional embodiment, there are two positioning portions, which are respectively connected to two opposite ends of the collision portion and extend along the circumference of the shell.

[0013] In an optional embodiment, the inner cavity of the shell is further provided with a limiting portion, the limiting portion and the supporting portion are spaced apart along the circumference of the shell, and a positioning groove is provided to cooperate with the positioning portion.

[0014] In an optional embodiment, the damping member further includes a connecting portion, the connecting portion is located between the limiting portion and the abutting portion, and the collision portion is connected to the positioning portion through the connecting portion.

[0015] In an optional embodiment, the damping member further includes an anti-slip portion, which is connected to both the positioning portion and the collision portion and is located outside the shell.

[0016] In an optional embodiment, the number of the abutting portions is at least two, and the at least two abutting portions are spaced apart along the circumference of the shell; the damping member corresponds to the abutting portions one to one.

[0017] In an optional embodiment, the noise reduction and speed reduction tape further includes a connecting member, and all the damping members are connected via the connecting member.

[0018] In an optional embodiment, a first inclined surface is provided at one end of the centrifugal member close to the damping member, and the damping member is provided with a second inclined surface matching the first inclined surface.

[0019] In an optional embodiment, the noise reduction and speed reduction tape further includes an elastic member, one end of the elastic member is connected to the hub, and the other end of the elastic member is connected to the centrifugal member.

[0020] The beneficial effects of the noise reduction and speed reduction tape measure provided by the embodiment of the utility model include:

[0021] The utility model provides a noise-reducing and decelerating tape measure, which includes a shell, a damping member, a hub and a centrifugal member. The inner cavity of the shell is provided with a supporting portion, and the damping member is at least partially arranged to correspond to the supporting portion. Based on this, the supporting portion can play a guiding and supporting role for the damping member. On the basis of the above, the hub is located in the shell and is rotatably connected to the shell; the centrifugal member is slidably connected to the hub and is used to collide with the damping member when the rotation speed of the hub reaches a preset rotation speed. It can be understood that the damping member can significantly reduce the vibration and noise in the system by absorbing and converting energy, thereby improving the user experience. Based on this, the noise-reducing and decelerating tape measure provided by the utility model reduces vibration transmission, reduces noise, and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 This is a schematic structural diagram of the noise reduction and speed reduction tape provided in this embodiment;

[0024] Figure 2 A partial schematic diagram of the noise reduction and speed reduction tape provided in this embodiment;

[0025] Figure 3Another partial schematic diagram of the noise reduction and speed reduction tape provided in this embodiment;

[0026] Figure 4 This is another partial schematic diagram of the noise reduction and speed reduction tape measure provided by this embodiment;

[0027] Figure 5 A schematic cross-sectional view of the noise reduction and speed reduction tape provided in this embodiment along the AA direction;

[0028] Figure 6 This is a schematic cross-sectional view of the noise reduction and speed reduction tape provided in this embodiment along the BB direction.

[0029] Icon: 10-noise reduction and deceleration tape; 100-housing; 110-supporting part; 130-limiting part; 131-positioning groove; 300-damping member; 310-collision part; 311-second inclined surface; 320-connecting part; 330-positioning part; 350-anti-slip part; 400-connecting part; 500-hub; 710-centrifugal member; 711-first inclined surface; 730-elastic member. DETAILED DESCRIPTION

[0030] In the prior art, deceleration is generally achieved by using a wedge in a centrifugal deceleration mechanism to impact the housing, which has the problem of generating huge noise and vibration, affecting user comfort.

[0031] In view of the above problems, the utility model provides a noise-reducing and speed-reducing tape measure, which can buffer the impact of the centrifugal component through a damping component, so that the impact noise and vibration are greatly reduced, thereby improving user comfort.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] The overall structure, working principle and technical effects of a noise reduction and speed reduction tape measure 10 provided by the present invention are described in detail below through embodiments and in conjunction with the accompanying drawings.

[0039] Figure 1 This is a schematic structural diagram of the noise reduction and speed reduction tape measure 10 provided in this embodiment. Figure 2 This is a partial schematic diagram of the noise reduction and speed reduction tape measure 10 provided in this embodiment. Figure 3 For another partial schematic diagram of the noise reduction and speed reduction tape measure 10 provided in this embodiment, please refer to Figures 1 to 3 The present invention provides a noise-reducing and speed-reducing tape measure 10 , which includes a housing 100 , a damping member 300 , a hub 500 , and a centrifugal member 710 .

[0040] The inner cavity of the housing 100 is provided with a supporting portion 110, and the damping member 300 is at least partially aligned with the supporting portion 110. Therefore, the supporting portion 110 can guide and support the damping member 300. It is easy to understand that by designing a specific shape or position, it can be ensured that the damping member 300 can properly align with the supporting portion 110, thereby ensuring that the damping member 300 can effectively perform its function.

[0041] Based on the above, the hub 500 is located within the housing 100 and is rotationally connected thereto. The centrifugal member 710 is slidably connected to the hub 500 and is configured to collide with the damping member 300 when the hub 500 reaches a predetermined speed. In other words, the centrifugal member 710, through its sliding connection, can automatically adjust its position based on centrifugal force as it rotates with the hub 500. When the hub 500 reaches a predetermined speed, the centrifugal member 710 moves and contacts the damping member 300.

[0042] It's important to note that the damping element 300 significantly reduces vibration and noise in the system by absorbing and converting energy, improving the user experience. Specifically, the high elasticity of the damping element 300 allows it to absorb significant amounts of energy during impact, converting it into elastic potential energy and heat rather than directly transmitting it as vibration. It also allows it to release energy gradually, rather than instantaneously, effectively preventing vibration transmission. This reduces vibration transmission and reduces noise.

[0043] Considering the deformation effect of rubber and its greater friction coefficient compared to plastic, the damping member 300 can be made of rubber in this application. While ensuring noise and vibration reduction, it can also generate greater frictional resistance and a longer retention time during the collision with the centrifugal member 710, thereby further improving the deceleration effect during the tape retraction. In other embodiments, the damping member 300 can also be made of other materials, which is not limited in this application.

[0044] In addition, it should be noted that the preset rotation speed in this application refers to a rotation speed that is likely to hit or cut the user. When the rotation speed is lower than the preset rotation speed, the retraction or extension of the tape measure is not affected. Based on this, in some embodiments, the noise reduction and speed reduction tape measure 10 further includes an elastic member 730, one end of which is connected to the hub 500 and the other end is connected to the centrifugal member 710.

[0045] It is understood that when the rotation speed of the hub 500 is less than the preset speed, the tension of the elastic member 730 is greater than the centrifugal force acting on the centrifugal member 710, causing the centrifugal member 710 to remain stationary relative to the hub 500, allowing the tape measure to be smoothly retracted or extended. When the rotation speed of the hub 500 is greater than the preset speed, the tension of the elastic member 730 is less than the centrifugal force acting on the centrifugal member 710, causing the centrifugal member 710 to slide relative to the hub 500 and collide with the damping member 300, causing the tape measure to retract at a reduced speed.

[0046] Optionally, the elastic member 730 in the present application can be configured as a return spring, and the centrifugal member 710 can be a metal wedge. When the wheel hub 500 rotates at a speed exceeding a predetermined speed, the centrifugal member 710 overcomes the elastic force of the return spring and slides along the axis of the spring, away from the axis of the wheel hub 500. During this process, the metal wedge has a certain amount of deadweight, which further enhances the centrifugal effect.

[0047] In some embodiments, such as Figure 2As shown, the centrifugal member 710 is provided with a first inclined surface 711 at one end thereof adjacent to the damping member 300, and correspondingly, the damping member 300 is provided with a second inclined surface 311 that cooperates with the first inclined surface 711. It is readily understood that when the wheel hub 500 reaches a predetermined rotational speed, the arrangement of the first inclined surface 711 and the second inclined surface 311 increases the contact area between the centrifugal member 710 and the damping member 300, resulting in a higher frequency of collisions and a more significant friction effect, thereby effectively reducing the recovery speed of the wheel hub 500.

[0048] See also Figures 4 to 6 Because the damping member 300 tends to peel off the abutting portion 110 during high-frequency impact, in some embodiments, the damping member 300 includes a collision portion 310 and a positioning portion 330 that are interconnected. The positioning portion 330 is connected to the housing 100, and the collision portion 310 is positioned in a correspondingly aligned manner with the abutting portion 110. This connection provides sufficient tensile and shear strength without affecting the function of the damping member 300, ensuring that the damping member 300 will not loosen or fall off during high-frequency impact.

[0049] To further enhance the impact resistance of the damping element 300, two positioning portions 330 are provided, each connected to opposite ends of the collision portion 310. Furthermore, considering that the collision portion is susceptible to significant tangential stress during high-frequency impacts, both positioning portions 330 extend circumferentially along the housing 100 to enhance the tangential fixation of the damping element 300 within the housing 100.

[0050] See also Figure 2 and Figure 5 To improve the axial fixation of the damping member 300 in the housing 100, a limiting portion 130 is further provided in the inner cavity of the housing 100. The limiting portion 130 and the abutting portion 110 are spaced apart along the circumference of the housing 100. Furthermore, the limiting portion 130 is provided with a positioning groove 131 that cooperates with the positioning portion 330, so that the positioning portion 330 can be firmly embedded therein, reducing axial displacement caused by high-frequency impact.

[0051] To further optimize the design of the damping member 300, the spacing between the limiting portion 130 and the abutting portion 110 can be utilized to position the damping member 300. Specifically, the damping member 300 further includes a connecting portion 320, which is located between the limiting portion 130 and the abutting portion 110, and the collision portion 310 is connected to the positioning portion 330 via the connecting portion 320. It is easy to understand that the connecting portion 320 is sandwiched between the limiting portion 130 and the abutting portion 110, thereby further enhancing the stability of the damping member 300 and preventing it from displacement during high-frequency impacts.

[0052] To optimize space utilization and enhance the stability of the damping element 300, the damping element 300 also includes an anti-slip portion 350. This anti-slip portion 350 is located outside the housing 100 and is connected to both the positioning portion 330 and the collision portion 310, forming an integral structure. This arrangement increases the contact area and friction between the damping element 300 and the housing 100, further preventing the damping element 300 from slipping during high-frequency impacts, thereby improving the overall structural strength and stability.

[0053] Please refer again Figure 2 In some embodiments, to improve the effectiveness of vibration and noise reduction, there are at least two abutting portions 110, which are spaced apart along the circumference of the housing 100. On this basis, the damping member 300 corresponds to the abutting portions 110 in a one-to-one manner, i.e., in position and number, to ensure that the kinetic energy of the centrifugal member 710 is always absorbed by the damping member 300.

[0054] Furthermore, the noise-reducing and speed-reducing tape measure 10 includes a connector 400, which connects all the damping elements 300, ensuring that they remain in a fixed position during high-frequency impacts, thereby improving the overall structural strength and stability. Furthermore, it should be noted that, considering the manufacturing cost and process difficulty, the damping elements 300 and the connector 400 can be manufactured using an integral injection molding method.

[0055] In summary, the present invention provides a noise-reducing and speed-reducing tape measure 10, which includes a housing 100, a damping member 300, a hub 500, and a centrifugal member 710. The housing 100 has an inner cavity provided with a supporting portion 110, with the damping member 300 at least partially aligned with the supporting portion 110. Thus, the supporting portion 110 can provide guidance and support for the damping member 300. Furthermore, the hub 500 is located within the housing 100 and is rotationally connected thereto. The centrifugal member 710 is slidably connected to the hub 500 and is configured to collide with the damping member 300 when the hub 500 reaches a predetermined speed. It is understood that the damping member 300 can significantly reduce vibration and noise in the system by absorbing and converting energy, thereby improving the user experience. Therefore, the noise-reducing and speed-reducing tape measure 10 provided by the present invention reduces vibration transmission, reduces noise, and enhances the user experience.

[0056] 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 covered by the protection scope of the present invention.

Claims

1. A noise reduction and speed reduction tape measure, characterized in that: include: A housing (100), wherein an inner cavity of the housing (100) is provided with a supporting portion (110); a damping member (300), wherein at least a portion of the damping member (300) is disposed in a correspondingly fitted relationship with the abutting portion (110); a wheel hub (500), the wheel hub (500) being located in the housing (100) and being rotatably connected to the housing (100); A centrifugal member (710) is slidably connected to the wheel hub (500) and is used to collide with the damping member (300) when the rotation speed of the wheel hub (500) reaches a preset rotation speed.

2. The noise reduction and speed reduction tape measure according to claim 1, characterized in that: The damping member (300) comprises a collision portion (310) and a positioning portion (330) connected to each other, the positioning portion (330) being connected to the housing (100), and the collision portion (310) being arranged in a correspondingly fitted manner to the abutting portion (110).

3. The noise reduction and speed reduction tape measure according to claim 2, characterized in that: There are two positioning portions (330), and the two positioning portions (330) are respectively connected to two opposite ends of the collision portion (310), and both extend along the circumference of the shell (100).

4. The noise reduction and speed reduction tape measure according to claim 2, characterized in that: The inner cavity of the shell (100) is further provided with a limiting portion (130), the limiting portion (130) and the abutting portion (110) are spaced apart along the circumference of the shell (100), and a positioning groove (131) is provided to cooperate with the positioning portion (330).

5. The noise reduction and speed reduction tape measure according to claim 4, characterized in that: The damping member (300) further includes a connecting portion (320), wherein the connecting portion (320) is located between the limiting portion (130) and the abutting portion (110), and the collision portion (310) is connected to the positioning portion (330) via the connecting portion (320).

6. The noise reduction and speed reduction tape measure according to claim 2, characterized in that: The damping member (300) further includes an anti-slip portion (350), the anti-slip portion (350) being located outside the housing (100) and connected to both the positioning portion (330) and the collision portion (310).

7. The noise reduction and speed reduction tape measure according to any one of claims 1 to 6, characterized in that: The number of the abutting portions (110) is at least two, and the at least two abutting portions (110) are arranged at intervals along the circumference of the shell (100); and the damping member (300) corresponds to the abutting portions (110) in a one-to-one manner.

8. The noise reduction and speed reduction tape measure according to claim 7, characterized in that: The noise reduction and speed reduction tape measure (10) further comprises a connecting member (400), and all the damping members (300) are connected via the connecting member (400).

9. The noise reduction and speed reduction tape measure according to any one of claims 1 to 6, characterized in that: The centrifugal member (710) is provided with a first inclined surface (711) at one end close to the damping member (300), and the damping member (300) is provided with a second inclined surface (311) matched with the first inclined surface (711).

10. The noise reduction and speed reduction tape measure according to any one of claims 1 to 6, characterized in that: The noise-reducing and speed-reducing tape measure (10) further comprises an elastic member (730), one end of the elastic member (730) being connected to the hub (500) and the other end being connected to the centrifugal member (710).

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