Steel tape with damping locking structure

Abstract

The utility model discloses a steel tape with a damping locking structure, belongs to the technical field of measuring tools, and aims to improve the use safety and convenience of the measuring tools. The steel tape core assembly comprises a central shaft, a take-up and pay-off disc, a tape, a locking mechanism, a damping mechanism, a damping lifting mechanism and a shell. The locking mechanism is composed of a button, a connecting rod, a friction block and a rotating shaft and allows a user to brake the ruler belt at any measurement position for measurement. The damping mechanism realizes stable and slow rewinding of the tape through the synergistic effect of the unidirectional rotation damper, the transmission rod and the friction wheel, and potential damage caused by rapid rewinding is effectively avoided. According to the damping lifting mechanism, through a shifting block and a reset spring, a user can rapidly relieve damping according to needs, rapid rewinding of the tape is achieved, and the operation efficiency is improved. The utility model is suitable for the industries of building, engineering, decoration and the like, and provides a safe and efficient measuring tool.

Description

Technical Field

[0001] The utility model belongs to the technical field of measuring tools and relates to a steel tape measure, in particular to a steel tape measure with a damping locking structure. Background Art

[0002] Steel tape measures are essential equipment in a variety of industries, including construction, engineering, civil engineering, and home renovation. Common types include self-winding, brake-type, and swing-type. Self-winding tapes are more widely used due to their lower price and smaller size. However, existing self-winding tape measures often retract very quickly, and their sharp edges can easily cause scratches or even more serious injuries.

[0003] Existing steel tape measures are designed to slowly retract the tape when it is rewound by providing an elastic brake or mechanism. Chinese patent application No. 202011140055.4 discloses a steel tape measure. In this technical solution, a brake is provided between a stop button inserted on the edge strip of the cover and the tape. When the tape is retracted or pulled out, the brake is used to form a fixed friction force with the wear-resistant tape attached to the surface of the tape through an elastic mechanism, thereby achieving the effect of reducing speed. However, since the position of the wear-resistant tape is fixed at the end of the tape, the tape moves in a rapid rewinding manner in the area outside the wear-resistant tape. Since this structure only ensures the slowdown of the speed of the rewinding end of the tape, it cannot guarantee the safety of the entire tape rewinding movement process. In actual use, the tape will retract quickly as soon as the hand is released after the tape is pulled out. When continuing to use it, the tape needs to be pulled out from the beginning, which is not convenient enough. Utility Model Content

[0004] In response to the deficiencies in the above-mentioned prior art, the utility model proposes a steel tape measure with a damping locking structure. By providing a damping mechanism and a locking mechanism, the tape can be locked at any position and the speed of the tape when it is rewound can be controlled, thereby ensuring ease of use while improving safety performance.

[0005] The present application provides a steel tape measure with a damping locking structure adopting the following technical solutions:

[0006] A steel tape measure with a damping locking structure comprises a central shaft, a retractable disk sleeved on the central shaft, a tape measure band wound around the retractable disk, and a housing covering the retractable disk; the steel tape measure further comprises:

[0007] A locking mechanism is provided between the housing and the retractable disk and is located above the measuring tape;

[0008] a damping mechanism, the damping mechanism being arranged between the locking mechanism and the tape of the measuring tape;

[0009] The damping lifting mechanism is arranged on both sides of the damping mechanism, driving the damping mechanism to move up and down along the shell.

[0010] By adopting the above technical solution, under the action of the damping mechanism, the measuring tape is not affected when being pulled out, but the speed is reduced when being rewound; when rapid recovery is required, the damping lifting mechanism is utilized to lift the damping mechanism away from the measuring surface to release the damping, thereby achieving rapid recovery; when the measuring tape needs to be locked at any position, the locking mechanism is utilized to act on the measuring tape to achieve braking of the measuring tape.

[0011] Furthermore, the locking mechanism is composed of a button, a connecting rod, a friction block and a rotating shaft; the middle part of the button is rotatably connected to the housing, one end of the button is rotatably connected to the connecting rod, and the bottom end of the connecting rod is rotatably connected to the friction block via the rotating shaft; the friction block contacts the tape measure under the joint action of the button and the connecting rod.

[0012] By adopting the above technical solution, since one end of the button is rotatably connected to the connecting rod and the bottom end of the connecting rod is rotatably connected to the friction block, by pressing the button, the connecting rod is driven to move downward, and the friction block moves downward and contacts the tape measure. At the same time, the connecting rod limits the friction block, thereby achieving braking of the tape measure at any position.

[0013] Furthermore, the damping mechanism is composed of a one-way rotating damper, a transmission rod and a friction wheel; the one-way rotating damper is connected and fixed to the transmission rod, and the one-way rotating damper rotates with the rotation of the transmission rod; the friction wheel is sleeved on the transmission rod and fixed to it, and the transmission rod rotates with the rotation of the friction wheel. In the initial state, the friction wheel is in contact with the measuring tape.

[0014] By adopting the above technical solution, the friction wheel, the transmission rod and the one-way rotation damper are fixed in rotation, and the friction wheel is in contact with the measuring tape, so that the measuring tape will not be affected when it is pulled out, and when it is rewound, the one-way rotation damper will provide damping to reduce its speed and rewind slowly, thereby ensuring the convenience of using the steel tape and improving the safety of the measuring tape when rewinding.

[0015] Furthermore, the number of the friction wheels is no less than 2, and the friction wheels are symmetrically installed along the center of the transmission rod.

[0016] By adopting the above technical solution, at least two friction wheels are symmetrically installed on both sides of the transmission rod to ensure that the force exerted by the friction wheels on the measuring tape is evenly distributed, which can improve stability and more effectively control the speed of the steel tape when it is rewound.

[0017] Furthermore, the damping lifting mechanism is composed of a shift block and a return spring; the shift block is slidably arranged on the outer shell and is rotatably connected to the two ends of the transmission rod, and the transmission rod slides upward along the outer shell under the action of the shift block; the return spring is arranged between the top surface of the shift block and the outer shell, and the transmission rod moves downward along the outer shell under the action of the return spring.

[0018] By adopting the above technical solution, since the shift block is rotationally connected to the transmission rod and can only slide up and down along the shell, by shifting the shift block upward, the transmission rod moves upward, driving the friction wheel to leave the surface of the tape measure, thereby releasing the damping to achieve rapid rewinding of the tape measure; and after the shift block completes one action, the reset spring automatically returns to its initial position through the elastic force of the spring, thereby improving the convenience of use for the operator.

[0019] Furthermore, the two side surfaces of the shell are respectively provided with through slots, the top surface of the through slots is provided with an upper positioning hole, the top surface of the shift block is provided with a lower positioning hole, and the reset spring is placed between the upper positioning hole and the lower positioning hole.

[0020] By employing this technical solution, the through-slot and locating hole are designed to precisely locate the return spring relative to the shift block and the housing. The upper and lower locating holes are located on the top surfaces of the housing through-slot and the shift block, respectively. This design ensures that the return spring can be stably compressed and rebounded within the housing, preventing displacement due to external forces or vibration.

[0021] Furthermore, both sides of the shell are provided with an anti-slip layer, the surface of which has textures or protrusions.

[0022] By adopting the above technical solution, the texture or protrusions of the anti-slip layer on both sides of the shell can increase the friction with the user's hand, thereby improving the stability and safety when using the steel tape measure.

[0023] In summary, the present invention has at least one of the following beneficial technical effects:

[0024] (1) The utility model can reduce the speed of the tape measure when it is rewound by setting a damping mechanism, thereby preventing the user from being injured by the sharp edge of the tape when the tape is rewound quickly.

[0025] (2) The present invention provides a locking mechanism so that the tape can be locked at any position, providing greater flexibility and controllability, making measurement and marking more convenient.

[0026] (3) The utility model provides a damping mechanism, which can, on the one hand, form damping when the tape is retracted, and on the other hand, can make the damping mechanism leave the tape surface through the damping lifting mechanism, thereby realizing rapid retraction of the tape and improving the convenience of operation.

[0027] (4) By reducing the impact of the tape's rapid rewinding on the internal structure, the internal structure damage rate is reduced, and the durability and service life of the steel tape are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall external structure of the utility model.

[0029] Figure 2 It is a schematic diagram of the three-dimensional structure of the locking mechanism in the utility model.

[0030] Figure 3 This is a schematic diagram of the main structure of the locking mechanism in the present invention.

[0031] Figure 4 This is a schematic diagram of the damping mechanism structure of the utility model.

[0032] Figure 5 This is a structural diagram of the damping and lifting mechanism of the utility model.

[0033] Figure 6 for Figure 4 Schematic diagram of the full cross-section structure in the AA direction.

[0034] Figure 7 It is a schematic diagram of the locking mechanism and the damping mechanism in the utility model.

[0035] In the figure: 1 housing, 1-1 through slot, 1-2 upper positioning hole, 2 locking mechanism, 2-1 locking button, 2-2 locking connecting rod, 2-3 locking friction block, 2-4 rotating shaft, 3 lifting belt, 4 anti-slip layer, 5 fixed cover, 6 tape measure, 7 hook, 8 damping lifting mechanism, 8-1 shift block, 8-1-1 lower positioning hole, 8-2 return spring, 9 center shaft, 10 retractable disk, 11 damping mechanism, 11-1 one-way rotation damper, 11-2 transmission rod, 11-3 friction wheel, 12-1 first countersunk screw, 12-2 second countersunk screw. DETAILED DESCRIPTION

[0036] The present invention is further illustrated below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, modifications of various equivalent forms of the present invention by those skilled in the art fall within the scope defined by the claims attached to this application.

[0037] Example 1

[0038] like Figure 1 、 Figure 3 、 Figure 4As shown, a steel tape measure with a damping locking structure is composed of a central axis 9, a retractable disk 10 sleeved on the central axis, a tape measure band 6 wound around the retractable disk 10, a shell 1 covering the outside of the retractable disk, a locking mechanism 2 arranged between the shell 1 and the retractable disk 10, a damping mechanism 11 arranged between the locking mechanism 2 and the tape measure band 6, and a damping lifting mechanism 8 arranged on both sides of the damping mechanism 11. Fixed cover shells 5 are provided on both sides of the front end of the shell 1, and the two fixed cover shells are connected and fixed by a first countersunk screw 12-1 and a second countersunk screw 12-2.

[0039] In order to better realize the braking of the tape measure 6 at any position, the present embodiment is realized by setting a locking mechanism 2. Specifically, Figure 2-3 As shown, the locking mechanism 2 is composed of a button 2-1, a connecting rod 2-2, a friction block 2-3 and a rotating shaft 2-4; the middle part of the button 2-1 is rotatably connected to the housing 1, one end of the button 2-1 is rotatably connected to the connecting rod 2-2, and the bottom end of the connecting rod 2-2 is rotatably connected to the friction block 2-3 via the rotating shaft 2-4; the friction block 2-3 contacts the measuring tape 6 under the joint action of the button 2-1 and the connecting rod 2-2.

[0040] In order to reduce the rewinding speed of the tape 6 to ensure the convenience of using the steel tape and improve the safety of the tape 6 when it is rewound, this embodiment is achieved by providing a damping mechanism 11. Specifically, Figure 4-6 As shown, the damping mechanism 11 is composed of a one-way rotating damper 11-1, a transmission rod 11-2 and a friction wheel 11-3; the one-way rotating damper 11-1 is fixedly connected to the transmission rod 11-2, and the one-way rotating damper 11-1 rotates as the transmission rod 11-2 rotates; the friction wheel 11-3 is sleeved on the transmission rod 11-2 and fixed thereto, and the transmission rod 11-2 rotates as the friction wheel 11-3 rotates, and in the initial state, the friction wheel 11-3 is in contact with the measuring tape 6.

[0041] In order to release the damping and realize the rapid rewinding of the tape measure 6, the embodiment is achieved by setting a damping lifting mechanism 8. Specifically, Figure 1 、 Figure 4 、 Figure 5 、 Figure 6 As shown, the damping lifting mechanism 8 is composed of a shift block 8-1 and a return spring 8-2; the shift block 8-1 is slidably set on the housing 1 and is rotatably connected to the two ends of the transmission rod 11-2, and the transmission rod 11-2 moves up and down along the housing 1 under the action of the shift block 8-1; the return spring 8-2 is set between the top surface of the shift block 8-1 and the housing 1, and the transmission rod 11-2 moves downward along the housing 1 under the action of the return spring 8-2.

[0042] Example 2

[0043] In order to ensure that the force exerted by the friction wheel on the tape is evenly distributed, improve stability, and more effectively control the speed of the steel tape when it is rewound, this embodiment is achieved by setting a friction wheel 11-3. Specifically, Figure 6 As shown, the friction wheels 11 - 3 are installed symmetrically along the center of the transmission rod 11 - 2 , and there are two friction wheels 11 - 3 .

[0044] In order to ensure that the return spring is stably compressed and rebounded in the housing and will not be displaced due to external force or vibration, the present embodiment sets a positioning hole to limit the return spring. Specifically, Figure 6 As shown, through slots 1-1 are provided on both sides of the housing 1, an upper positioning hole 1-2 is provided on the top surface of the through slot 1-1, a lower positioning hole 8-1-1 is provided on the top surface of the shift block 8-1, and a reset spring 8-2 is placed between the upper positioning hole 1-2 and the lower positioning hole 8-1-1.

[0045] In order to increase the friction between the steel tape measure and the user's hand and improve the stability and safety when using the steel tape measure, this embodiment is achieved by setting an anti-slip layer. Specifically, Figure 1 As shown, an anti-skid layer is provided on both sides of the housing 1, and the surface of the anti-skid layer has an anti-skid texture or protrusions.

[0046] like Figure 1-7 A steel tape measure with a damping lock mechanism is described as follows: When in use, hold the tape measure in the fully retracted position with one hand by the non-slip layer and the other hand by the hook. Smoothly pull the tape out to the desired length. To lock the tape in place during measurement, press the locking button. This button drives the connecting rod downward, causing the friction block to engage the tape and lock it. With the tape locked, perform the desired measurement or mark. After completing the measurement, release the locking button, and the tape will slowly rewind under the action of the damping mechanism. To quickly retract the tape, push the shifting block in the damping lift mechanism upward, causing the transmission rod to drive the friction wheel off the tape surface, releasing the damping. After rapid retraction, release the shifting block. The reset spring automatically returns the shifting block to its initial position, causing the damping mechanism to descend, resuming contact with the tape and preparing for the next measurement. The steel tape measure can be hung by the lifting strap at the end or stored securely.

Claims

1. A steel tape measure with a damping locking structure, comprising a central shaft (9), a retractable disk (10) sleeved on the central shaft, a tape measure band (6) wound around the retractable disk (10), and a housing (1) covering the outside of the retractable disk; characterized in that: The steel tape measure also includes: A locking mechanism (2), the locking mechanism (2) being arranged between the housing (1) and the retractable disk (10) and located above the measuring tape (6); A damping mechanism (11), the damping mechanism (11) being arranged between the locking mechanism (2) and the measuring tape (6); A damping lifting mechanism (8) is provided on both sides of the damping mechanism (11) and drives the damping mechanism (11) to move up and down along the housing (1).

2. The steel tape measure with a damping locking structure according to claim 1, characterized in that: The locking mechanism (2) is composed of a button (2-1), a connecting rod (2-2), a friction block (2-3) and a rotating shaft (2-4); the middle part of the button (2-1) is rotatably connected to the housing (1), one end of the button (2-1) is rotatably connected to the connecting rod (2-2), and the bottom end of the connecting rod (2-2) is rotatably connected to the friction block (2-3) via the rotating shaft (2-4); the friction block (2-3) contacts the measuring tape (6) under the joint action of the button (2-1) and the connecting rod (2-2).

3. The steel tape measure with a damping locking structure according to claim 1, characterized in that: The damping mechanism (11) is composed of a one-way rotation damper (11-1), a transmission rod (11-2), and a friction wheel (11-3); the one-way rotation damper (11-1) is fixedly connected to the transmission rod (11-2), and the one-way rotation damper (11-1) rotates as the transmission rod (11-2) rotates; the friction wheel (11-3) is sleeved on the transmission rod (11-2) and fixed thereto, and the transmission rod (11-2) rotates as the friction wheel (11-3) rotates; in an initial state, the friction wheel (11-3) is in contact with the measuring tape (6).

4. The steel tape measure with a damping locking structure according to claim 3, characterized in that: The number of the friction wheels (11-3) is no less than two, and the friction wheels (11-3) are symmetrically installed along the center of the transmission rod (11-2).

5. The steel tape measure with a damping locking structure according to claim 1, characterized in that: The damping lifting mechanism (8) is composed of a shifting block (8-1) and a return spring (8-2); the shifting block (8-1) is slidably arranged on the housing (1) and is rotatably connected to both ends of a transmission rod (11-2); the transmission rod (11-2) slides upward along the housing (1) under the action of the shifting block (8-1); the return spring (8-2) is arranged between the top surface of the shifting block (8-1) and the housing (1); the transmission rod (11-2) moves downward along the housing (1) under the action of the return spring (8-2).

6. The steel tape measure with a damping locking structure according to claim 5, characterized in that: The two side surfaces of the housing (1) are respectively provided with through slots (1-1), the top surface of the through slot (1-1) is provided with an upper positioning hole (1-2), the top surface of the shift block (8-1) is provided with a lower positioning hole (8-1-1), and the return spring (8-2) is placed between the upper positioning hole (1-2) and the lower positioning hole (8-1-1).

7. The steel tape measure with a damping locking structure according to claim 1, characterized in that: Anti-slip layers (4) are provided on both sides of the housing (1), and the surface of the anti-slip layers (4) has textures or protrusions.

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