Position-stopping speed-limiting measuring tape

Abstract

The utility model provides a stop speed-limiting measuring tape, which relates to the technical field of measuring tapes and comprises a tape band, a shell, a stop piece, a hub and a centrifugal piece. Wherein the hub is rotationally connected with the shell and is wound by the tape, and the shell is provided with a tape outlet used for being in sliding fit with the tape. On the basis, under the condition that the tape belt of the measuring tape is recycled, along with rotation of the hub, the tape belt penetrates back to the inner cavity of the shell from the tape outlet and is wound on the hub. Moreover, the stop piece is located at the ruler outlet, and is rotatably connected with the housing. And the centrifugal part is in sliding connection with the hub and is used for colliding with the stop part under the condition that the hub reaches a preset rotating speed, so that the stop part rotates relative to the shell and acts on the tape in an abutting manner. Therefore, the rotating speed of the hub is lower than the preset rotating speed or is maintained at the preset rotating speed based on the counter-acting force of the centrifugal part to the hub and the abutting force of the stop part to the tape, so that the tape is maintained at the recovery speed at which hands are not hit or cut, and safe recovery is realized.

Description

Technical Field

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

[0002] In the field of steel tape measures, when a tape measure is retracted, the tape is rapidly rewound by the tightened coil spring, which exerts a significant force on the tape, causing it to gradually accelerate. Typically, a tape several meters long can be fully retracted within three seconds. This kinetic energy is then absorbed by the thin, sharp tape.

[0003] However, if the user's hand is too close to the tape, or the tape is retracted at an angle, or the hub is stuck, causing the tape to bend and retract, the tape retracts too quickly and the user often does not have time to react, risking being hit or cut. Utility Model Content

[0004] The purpose of the utility model includes providing a stop-speed-limited tape measure, which can keep the tape recovery speed at a low speed that will not cut people's hands, thereby achieving the purpose of safe recovery.

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

[0006] In a first aspect, the utility model provides a stop-speed limiting tape measure, comprising:

[0007] tape;

[0008] The housing is provided with a ruler outlet for slidingly engaging with the ruler tape;

[0009] A stopper, located at the ruler outlet and rotatably connected to the housing;

[0010] a hub, which is rotatably connected to the housing and around which the tape is wound;

[0011] The centrifugal member is slidably connected to the wheel hub and is used to collide with the stop member when the wheel hub reaches a preset speed, so that the stop member rotates relative to the shell and acts on the scale tape.

[0012] In an optional embodiment, the stopper includes a first braking portion, a second braking portion, and a first connecting portion connecting the first braking portion and the second braking portion;

[0013] Among them, the first connecting part is rotationally connected to the shell; the first braking part is used to collide with the centrifugal part when the wheel hub reaches a preset speed; the second braking part is used to abut against the tape when the wheel hub reaches a preset speed.

[0014] In an optional embodiment, the angle between the extension line of the first braking portion and the extension line of the second braking portion is an obtuse angle.

[0015] In an optional embodiment, a first inclined surface is provided at one end of the centrifugal member close to the first braking portion, and a second inclined surface cooperating with the first inclined surface is provided at one end of the first braking portion close to the centrifugal member.

[0016] In an optional embodiment, the stop-speed limiting tape measure further includes an elastic member, one end of the elastic member is connected to the hub, and the other end is connected to the centrifugal member, and the centrifugal member reciprocates along the axis direction of the elastic member.

[0017] In an optional embodiment, the stop-speed limiting tape measure further includes a scale locking member located at the tape outlet, the scale locking member being connected to the housing and located on a side of the tape away from the stop member.

[0018] In an optional embodiment, the stop-speed tape measure further includes a button movably connected to the housing, and the button has a first position abutting against the locking member and a second position separated from the locking member;

[0019] The ruler locking member is rotatably connected to the housing and is used to contact the ruler tape when the button is in the first position; and to separate from the ruler tape when the button is in the second position.

[0020] In an optional embodiment, the ruler locking member includes a first abutting portion, a second abutting portion, and a second connecting portion connecting the first abutting portion and the second abutting portion;

[0021] The second connecting portion is rotatably connected to the shell; the first abutting portion is used to contact the key when the key is in the first position; and the second abutting portion is used to contact the ruler when the key is in the first position.

[0022] In an optional embodiment, the angle between the extension line of the first abutting portion and the extension line of the second abutting portion is an obtuse angle.

[0023] In an optional embodiment, the stop-speed limiting tape measure further includes a reset member, one end of which is connected to the housing, and the other end of which is connected to the second abutting portion.

[0024] The beneficial effects of the stop-speed limiting tape measure provided by the embodiment of the utility model include:

[0025] The utility model provides a stop-speed tape measure, comprising a tape, a housing, a stopper, a hub, and a centrifugal member. The hub is rotatably connected to the housing and is wound around the tape, and the housing is provided with an outlet for slidingly engaging the tape. Therefore, when the tape measure retracts the tape, as the hub rotates, the tape passes back from the outlet into the inner cavity of the housing and is wound around the hub. Furthermore, the stopper is located at the outlet and is rotatably connected to the housing. The centrifugal member is slidably connected to the hub and is configured to collide with the stopper when the hub reaches a preset rotational speed, causing the stopper to rotate relative to the housing and act against the tape. Therefore, based on the reaction force of the centrifugal member on the hub and the resisting force of the stopper on the tape, the rotational speed of the hub will be lower than the preset rotational speed or maintained at the preset rotational speed, thereby maintaining the tape at a recovery speed that will not hit or cut a person's hands, thereby achieving safe recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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.

[0027] Figure 1 A schematic diagram of the overall structure of the stop-speed-limiting tape measure provided in this embodiment;

[0028] Figure 2 A schematic diagram of the partial structure of the stop-speed-limiting tape measure provided in this embodiment;

[0029] Figure 3 A schematic diagram of another partial structure of the stop-speed-limiting tape measure provided in this embodiment;

[0030] Figure 4 A schematic structural diagram of the stop member provided in this embodiment;

[0031] Figure 5 A schematic structural diagram of the centrifugal element provided in this embodiment;

[0032] Figure 6 This is a schematic structural diagram of the ruler locking component provided in this embodiment.

[0033] Icons: 10-stop speed-limiting tape measure; 100-measure tape; 200-housing; 210-measure outlet; 300-stop member; 310-first braking part; 311-second inclined surface; 320-first connecting part; 330-second braking part; 400-wheel hub; 510-centrifugal member; 511-first inclined surface; 530-elastic member; 600-measure locking member; 610-first supporting part; 620-second connecting part; 630-second supporting part; 700-button; 800-measure outlet member; 900-reset member. DETAILED DESCRIPTION

[0034] During use, the steel tape measure in the related art retracts rapidly at high speed due to the strong elastic force of the coil spring, posing a risk of hitting or cutting the user.

[0035] In response to the above problems, the present invention provides a stop-speed-limited tape measure, which can keep the tape's recovery speed at a low speed that will not cut people's hands, thereby achieving the purpose of safe recovery.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] Figure 1 This is a schematic diagram of the overall structure of the stop speed limiting tape 10 provided in this embodiment. Figure 2 This is a partial structural diagram of the stop speed limiting tape 10 provided in this embodiment. Figure 3 For another partial structural diagram of the stop speed limiting tape measure 10 provided in this embodiment, please refer to Figures 1 to 3 The present invention provides a stop-speed measuring tape 10 , which is applied in the field of measuring tape technology and includes a measuring tape 100 , a housing 200 , a stop member 300 , a hub 400 , and a centrifugal member 510 .

[0043] The hub 400 is rotatably connected to the housing 200 and is wound around the tape 100. The housing 200 defines a tape outlet 210 for sliding engagement with the tape 100. Therefore, when the tape measure retracts the tape 100, as the hub 400 rotates, the tape 100 passes through the outlet 210 back into the inner cavity of the housing 200 and winds around the hub 400. It will be readily understood that, in this application, the retraction speed of the tape 100 is equivalent to the rotational speed of the hub 400.

[0044] Furthermore, the stopper 300 is located at the tape outlet 210 and is rotatably connected to the housing 200. The centrifugal element 510 is slidably connected to the hub 400 and is configured to collide with the stopper 300 when the hub 400 reaches a preset rotational speed, causing the stopper 300 to rotate relative to the housing 200 and abut against the tape 100. It should be noted that the preset rotational speed of the hub 400 is a safe retraction speed that prevents the tape 100 from striking or cutting a person's hand.

[0045] During the above process, on the one hand, the stop member 300 and the housing 200 at the tape outlet 210 jointly clamp the tape 100, thereby increasing friction and slowing down the recovery speed of the tape 100; on the other hand, the centrifugal member 510 is subjected to an impact force opposite to the direction of movement under the impact, and this force is transmitted to the hub 400, so that the rotation speed of the hub 400 is reduced, and the recovery speed of the tape 100 is also reduced accordingly.

[0046] It should also be noted that the faster the rotation of the hub 400, the greater the centrifugal force of the centrifugal element 510, and the greater the rotation angle of the stopper 300 that collides with the centrifugal element 510. Accordingly, for the tape 100, the distance between the stopper 300 and the housing 200 at the tape outlet 210 decreases, increasing the clamping force and frictional forces on the tape 100. For the hub 400, the reaction force of the centrifugal element 510 also increases, slowing the rotation of the hub 400. Furthermore, it should be noted that the present invention achieves speed reduction by cooperating with the stopper 300 on one side at the tape outlet 210, which also has the beneficial effects of small space occupation and compact structure.

[0047] See also Figure 4 , Figure 4 This is a schematic diagram of the structure of the stop member 300 provided in this embodiment. In some embodiments, to facilitate motion transmission between the centrifugal member 510, the stop member 300, and the tape 100, the stop member 300 includes a first braking portion 310, a second braking portion 330, and a first connecting portion 320 connecting the first braking portion 310 and the second braking portion 330. The first braking portion 310 is configured to collide with the centrifugal member 510 when the wheel hub 400 reaches a preset rotational speed; the second braking portion 330 is configured to abut against the tape 100 when the wheel hub 400 reaches a preset rotational speed.

[0048] Specifically, the first connecting portion 320 is rotatably connected to the housing 200, allowing the stop member 300 to rotate within a certain range as it is impacted by the centrifugal member 510. Therefore, when the hub 400 reaches a predetermined rotational speed, the first braking portion 310 collides with the centrifugal member 510, driving the first connecting portion 320 and the second braking portion 330 to rotate. This causes the second braking portion 330 to abut against the tape 100, ensuring sufficient friction against the tape 100 at high rotational speeds, effectively slowing the recovery process.

[0049] Furthermore, to increase the sensitivity of the stopper 300 and enable it to transmit movement promptly, the angle between the extension lines of the first braking portion 310 and the second braking portion 330 is obtuse. Based on this, it is easy to understand that when the first braking portion 310 moves a small distance, the second braking portion 330, which is farther away, can quickly act on the tape 100, improving deceleration efficiency.

[0050] See also Figure 4 and Figure 5To increase the contact area between the centrifugal element 510 and the first braking portion 310, a first inclined surface 511 is provided on the end of the centrifugal element 510 that is closest to the first braking portion 310. A second inclined surface 311 is provided on the end of the first braking portion 310 that is closest to the centrifugal element 510, which mates with the first inclined surface 511. Consequently, when the hub 400 reaches a predetermined rotational speed, the first inclined surface 511 of the centrifugal element 510 and the second inclined surface 311 of the first braking portion 310 contact, collide, and rub against each other, effectively reducing the retraction speed of the tape 100.

[0051] In addition, it should be noted that the stopper 300 and the centrifugal member 510 that collide with each other in this application are both movable members. That is, during the collision, most of the impact force is transmitted and decelerated to the tape 100 and the hub 400 through the movement of the stopper 300 and the centrifugal member 510. Based on this, the elastic deformation between the stopper 300 and the centrifugal member 510 is significantly reduced, and the natural frequency vibration and noise caused by the elastic deformation are correspondingly reduced. Optionally, if costs permit, the first inclined surface 511 and the second inclined surface 311 are both configured as a rubber-coated structure to further reduce the noise and vibration caused by the deceleration process.

[0052] In some embodiments, the centrifugal member 510 stop speed measuring tape 10 further includes an elastic member 530, one end of which is connected to the hub 400 and the other end is connected to the centrifugal member 510. Therefore, when the hub 400 rotates at a speed lower than a preset speed, the tension of the elastic member 530 is greater than the centrifugal force acting on the centrifugal member 510, causing the centrifugal member 510 to maintain its position and allowing the measuring tape 100 to retract smoothly. When the hub 400 reaches a preset speed, the tension acting on the centrifugal member 510 is greater than the tension of the elastic member 530, causing the centrifugal member 510 to collide with the stop member 300, thereby blocking the movement of the hub 400 and achieving braking.

[0053] Alternatively, the elastic member 530 in the present application can be a spring, and the centrifugal member 510 can be a metal wedge. When the hub 400 reaches a predetermined rotational speed, the centrifugal member 510 overcomes the elastic force of the return spring and slides along the axis of the spring in a direction away from the axis of the hub 400. It is easy to understand that the metal wedge has a certain weight, which can enhance the centrifugal effect.

[0054] Considering that there is a certain distance between the stopper 300 and the upper edge of the tape outlet 210, in order to improve the deceleration efficiency of the stopper 300 on the tape 100, the stopper speed limit tape measure 10 further includes a scale lock 600 located at the tape outlet 210. The scale lock 600 is connected to the housing 200 and is located on the side of the tape 100 away from the stopper 300. Figure 2 and Figure 3As shown, the scale lock 600 is located on the upper side of the tape 100, and the stopper 300 is located on the lower side of the tape 100. Therefore, when the hub 400 reaches a predetermined rotational speed, the stopper 300 can rotate and lift the tape 100 upward. At a relatively small rotation angle, the stopper 300 and the scale lock 600 can jointly clamp the tape 100, thereby increasing deceleration efficiency.

[0055] It should be noted that when the tape 100 is wrapped around the hub 400, it assumes an inwardly curled arc. Accordingly, the portion of the tape 100 extending from the opening 210 also assumes an arc, with the arc facing upward. This inherently creates a flattening anti-deformation stress. In other words, in the absence of external constraints, the tape 100 tends to unfold and straighten. Consequently, during the tape 100's retraction process, the stopper 300 located on the side of the arcuate surface is affected by the tape 100's flattening anti-deformation stress, preventing the tape 100 from being lifted upward indefinitely.

[0056] In addition, it should be noted that if Figure 2 and Figure 3 As shown, when the hub 400 reaches the preset speed, the tape 100 is subjected to the downward force exerted by the locking member 600, the upward force exerted by the stop member 300, the flattening stress of the tape 100 itself, and the traction force exerted by the hub 400. It is easy to understand that these forces counteract each other, ensuring that the tape 100 is retracted at a reduced speed while maintaining its structural integrity. Furthermore, after the tape measure is fully retracted, all forces gradually disappear, and all components return to their initial state.

[0057] Please refer again Figure 2 and Figure 3 In some embodiments, to ensure that the tape 100 can be temporarily locked after being stretched to a preset length so that the user can read the value, a locking member 600 is rotatably connected to the housing 200. The stop-speed tape measure 10 also includes a button 700 movably connected to the housing 200. The button 700 has a first position in which it abuts against the locking member 600 and a second position in which it is separated from the locking member 600.

[0058] It should be noted that in this application, the movable connection between the button 700 and the housing 200 is a rotational connection. The first position of the button 700 refers to the position of the button 700 when pressure is applied, and the second position refers to the position of the button 700 when the pressure is removed. In other embodiments, the movable connection between the button 700 and the housing 200 may also be a sliding connection, with the first and second positions of the button 700 being sliding positions that enable contact. This will not be further described in this application.

[0059] Based on this, when the button 700 is in the first position, the locking member 600 contacts the tape 100 and, together with the tape outlet 210, clamps the tape 100, preventing it from naturally retracting. At this point, the rotational speed of the hub 400 is zero, and the stop member 300 lightly contacts the other side of the tape 100, exerting no force. When the button 700 is in the second position, the locking member 600 disengages from the tape 100, releasing the tape 100 and accelerating its retraction. At this point, the rotational speed of the hub 400 increases accordingly. Once the hub 400 reaches a predetermined speed, the stop member 300 applies force.

[0060] It should be noted that the button 700 in this application is provided with a limited position structure, so that the button 700 is only allowed to trigger a small range of movement. Based on this, when the button 700 is in the second position, the upward movement of the locking ruler 600 is small, and the tape 100 is accelerated to retract in a smaller space. In addition, it should be noted that considering that the distance between the locking ruler 600 and the lower edge of the ruler outlet 210 is too large, the lower edge of the ruler outlet 210 can also be provided with a ruler opening 800 to shorten the distance. Based on this, when the button 700 is in the first position, the ruler opening 800 and the locking ruler 600 jointly clamp the tape 100.

[0061] See also Figure 6 , Figure 6 This is a schematic diagram of the structure of the ruler lock member 600 provided in this embodiment. In some embodiments, to facilitate motion transmission between the button 700, the ruler lock member 600, and the ruler tape 100, the ruler lock member 600 includes a first abutting portion 610, a second abutting portion 630, and a second connecting portion 620 connecting the first abutting portion 610 and the second abutting portion 630. When the button 700 is in the first position, the first abutting portion 610 and the second abutting portion 630 are in contact with the button 700 and the ruler tape 100, respectively.

[0062] Specifically, the second connecting portion 620 is rotatably connected to the housing 200, allowing the ruler lock member 600 to rotate within a certain range as the button 700 abuts against it. Therefore, when the button 700 is in the first position, the first abutting portion 610 contacts the button 700, driving the second connecting portion 620 and the second abutting portion 630 to rotate, thereby causing the second abutting portion 630 to contact the ruler tape 100, locking the ruler tape 100 and preventing it from retracting.

[0063] Furthermore, to increase the sensitivity of the locking member 600 and enable it to transmit movement promptly, the angle between the extension of the first abutment 610 and the extension of the second abutment 630 is obtuse. Based on this, similar to the above, when the first abutment 610 moves a small distance, the second abutment, which is farther away, can quickly act on the tape 100, improving locking efficiency.

[0064] In some embodiments, such as Figure 2 and Figure 3 As shown, the stop-stop speed-limiting tape measure 10 further includes a reset member 900, one end of which is connected to the housing 200 and the other end to the second abutting portion 630. Based on this arrangement, when the button 700 is not pressed, the locking member 600, under the elastic force of the reset member 900, firmly abuts against the surface of the tape 100, thereby clamping the tape 100 together with the tape opening member 800 or the lower edge of the tape outlet 210, thereby locking the tape 100. Optionally, the reset member 900 may be provided with a reset spring or a reset plate.

[0065] Taking the improved stop-speed measuring tape 10 of the present invention as an example, its working principle and workflow are as follows:

[0066] When the button 700 is in the first position, the locking member 600 contacts the tape 100 and, together with the edge member 800, clamps the tape 100, locking the tape 100 and facilitating reading of the value. At this point, the rotational speed of the hub 400 is zero, and the stop member 300 lightly contacts the other side of the tape 100, exerting no force.

[0067] When the button 700 is in the second position, the locking element 600 separates from the tape 100, releasing the tape 100 and accelerating its retraction. At this point, the rotation speed of the hub 400 gradually increases. When the hub 400 accelerates to a predetermined speed, the centrifugal element 510 moves and strikes the stopper 300.

[0068] During this process, the stopper 300 and the housing 200 at the tape outlet 210 jointly clamp the tape 100, increasing friction and slowing the tape 100's retraction. Furthermore, the centrifugal element 510 experiences an impact force opposite to its direction of motion, which is transmitted to the hub 400, slowing its rotational speed and the tape 100's retraction speed. Consequently, the tape 100's retraction speed is maintained at a low enough speed to prevent injuries to hands, ensuring safe retraction.

[0069] In summary, the present invention provides a stop-stop speed-limiting tape measure 10, comprising a tape 100, a housing 200, a stopper 300, a hub 400, and a centrifugal element 510. The hub 400 is rotatably connected to the housing 200 and is wound around the tape 100. The housing 200 defines a tape outlet 210 for slidingly engaging the tape 100. Therefore, when the tape measure retracts the tape 100, as the hub 400 rotates, the tape 100 passes through the outlet 210 back into the inner cavity of the housing 200 and is wound around the hub 400. Furthermore, the stopper 300 is located at the outlet 210 and is rotatably connected to the housing 200. The centrifugal element 510 is slidably connected to the hub 400 and is configured to collide with the stopper 300 when the hub 400 reaches a predetermined rotational speed, causing the stopper 300 to rotate relative to the housing 200 and act against the tape 100. Therefore, based on the reaction force of the centrifugal member 510 on the hub 400 and the resistance force of the stop member 300 on the tape 100, the rotation speed of the hub 400 will be lower than the preset rotation speed or maintained at the preset rotation speed, so that the tape 100 is maintained at a recovery speed that will not hit or cut people's hands, thereby achieving safe recovery.

[0070] 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 stop-speed measuring tape, characterized in that: include: tape (100); A housing (200), wherein the housing (200) is provided with a ruler outlet (210) for slidingly engaging with the ruler tape (100); a stopper (300), the stopper (300) being located at the ruler outlet (210) and being rotatably connected to the housing (200); a hub (400), the hub (400) being rotatably connected to the housing (200) and being wound around the tape (100); A centrifugal member (510) is slidably connected to the wheel hub (400) and is used to collide with the stop member (300) when the wheel hub (400) reaches a preset rotation speed, so that the stop member (300) rotates relative to the housing (200) and acts against the tape (100).

2. The stop-speed measuring tape according to claim 1, characterized in that: The stopper (300) includes a first braking portion (310), a second braking portion (330), and a first connecting portion (320) connecting the first braking portion (310) and the second braking portion (330); The first connecting portion (320) is rotatably connected to the housing (200); the first braking portion (310) is used to collide with the centrifugal member (510) when the wheel hub (400) reaches the preset rotation speed; and the second braking portion (330) is used to abut against the ruler (100) when the wheel hub (400) reaches the preset rotation speed.

3. The stop-speed measuring tape according to claim 2, characterized in that: The included angle between the extension line of the first braking portion (310) and the extension line of the second braking portion (330) is an obtuse angle.

4. The stop-speed measuring tape according to claim 2, characterized in that: The centrifugal member (510) is provided with a first inclined surface (511) at one end close to the first braking portion (310), and the first braking portion (310) is provided with a second inclined surface (311) matched with the first inclined surface (511) at one end close to the centrifugal member (510).

5. The stop-speed measuring tape according to any one of claims 1 to 4, characterized in that: The stop-speed measuring tape (10) further comprises an elastic member (530), one end of the elastic member (530) being connected to the wheel hub (400), and the other end being connected to the centrifugal member (510), and the centrifugal member (510) being capable of reciprocating along the axial direction of the elastic member (530).

6. The stop-speed measuring tape according to any one of claims 1 to 4, characterized in that: The stop-speed measuring tape (10) further comprises a scale locking member (600) located at the tape outlet (210), wherein the scale locking member (600) is connected to the housing (200) and is located on a side of the tape (100) away from the stop member (300).

7. The stop-speed-limiting tape measure according to claim 6, characterized in that: The stop-speed measuring tape (10) further comprises a button (700) movably connected to the housing (200), wherein the button (700) has a first position abutting against the locking member (600) and a second position separated from the locking member (600); The ruler locking member (600) is rotatably connected to the housing (200) and is used to contact the ruler tape (100) when the button (700) is in the first position; and to separate from the ruler tape (100) when the button (700) is in the second position.

8. The stop-speed-limiting tape measure according to claim 7, characterized in that: The ruler lock member (600) comprises a first abutting portion (610), a second abutting portion (630), and a second connecting portion (620) connecting the first abutting portion (610) and the second abutting portion (630); The second connecting portion (620) is rotatably connected to the housing (200); the first abutting portion (610) is used to contact the button (700) when the button (700) is in the first position; and the second abutting portion (630) is used to contact the ruler tape (100) when the button (700) is in the first position.

9. The stop-speed-limiting tape measure according to claim 8, characterized in that: The included angle between the extension line of the first supporting portion (610) and the extension line of the second supporting portion (630) is an obtuse angle.

10. The stop-speed measuring tape (10) according to claim 8, characterized in that: The stop-speed measuring tape (10) further comprises a reset member (900), one end of the reset member (900) being connected to the housing (200), and the other end being connected to the second abutting portion (630).

Images