Measuring tape

Abstract

The utility model provides a measuring tape, and relates to the technical field of measuring tools. The measuring tape comprises a shell, a rolling wheel tape and a pressing piece, wherein the rolling wheel tape is rotationally arranged in the shell; the pressing piece comprises a pressing part, a rotating part and a braking part, the rotating part is rotationally connected into the shell, one end of the rotating part is connected to the pressing part, the other end of the rotating part is connected to the braking part, and the pressing part is configured to move relative to the shell, so that the rotating part rotates relative to the shell, the braking part is driven to move, and the braking part selectively brakes the rolling wheel ruler tape; wherein in the first direction, the projection length of the pressing part on the datum plane is larger than that of the braking part on the datum plane. The tape is a labor-saving lever, time and labor are saved, the tape is convenient to use, the stroke of pressing the pressing part by a user is larger than the moving stroke of the braking part, that is, after the user presses the preset stroke, the braking part is slowly lifted, slow unlocking of the rolling wheel tape is achieved, and therefore the recovery speed of the rolling wheel tape can be controlled.

Description

Technical Field

[0001] The utility model generally relates to the technical field of measuring tools, and in particular to a measuring tape. Background Art

[0002] The existing measuring tape includes a brake device and a measuring tape. The brake device is used to press the measuring tape to achieve the purpose of braking. When in use, the brake device needs to be manually placed in the brake position to fix the measuring tape; when the brake needs to be released, the brake device is manually moved away from the brake position again, and the measuring tape can be retracted to a certain length by pressing and releasing. However, in this way, the user frequently presses the brake device, which is prone to fatigue, and the retraction speed of the measuring tape is not easy to control, which is easy to scratch the user, and the safety is relatively low, which is difficult to meet the diversified usage needs of users. Utility Model Content

[0003] The tape measure provided by the utility model saves time and labor, and the recovery speed of the tape can be adjusted.

[0004] According to one aspect of the utility model, a tape measure is provided, comprising a shell, a reel caliper tape and a pressing piece, wherein the reel caliper tape is rotatably arranged in the shell; the pressing piece comprises a pressing part, a rotating part and a braking part, wherein the rotating part is rotatably connected to the shell, one end of the rotating part is connected to the pressing part, and the other end is connected to the braking part, and the pressing part is configured to move relative to the shell, so that the rotating part rotates relative to the shell and drives the braking part to move, so that the braking part selectively brakes the reel caliper tape; wherein, along a first direction, the projection length of the pressing part on a reference plane is greater than the projection length of the braking part on the reference plane, wherein the first direction and the rotation axis of the rotating part are perpendicular to each other, and the reference plane is the plane where the first direction and the rotation axis of the rotating part are located.

[0005] In some embodiments, along the first direction, a ratio of a projected length of the pressing portion on a reference plane to a projected length of the braking portion on the reference plane is greater than or equal to 2.5.

[0006] In some embodiments, the pressing portion, the rotating portion and the braking portion are an integrally formed structure.

[0007] In some embodiments, the measuring tape further includes an elastic member disposed in the housing, one end of the elastic member is connected to an end of the braking portion away from the rotating portion, and the other end of the elastic member can abut against the measuring tape of the reel.

[0008] In some embodiments, a side of the elastic member facing the measuring tape is provided with an avoidance notch; and / or resistance ribs are provided in the housing, and the elastic member and the resistance ribs are provided on both sides of the measuring tape.

[0009] In some embodiments, the measuring tape further includes a rotating shaft, which is disposed in the housing and passes through the rotating portion, and the rotating portion rotates relative to the rotating shaft.

[0010] In some embodiments, the measuring tape further includes a limiting member, which is disposed in the housing and is used to limit the pressing member.

[0011] In some embodiments, the measuring tape further includes a reset member disposed in the housing, and the reset member is used to reset the pressing member.

[0012] In some embodiments, a support portion is provided inside the shell, one end of the reset member abuts against the support portion, and the other end abuts against the pressing portion; and / or a support portion is provided inside the shell, one end of the reset member abuts against the support portion, and the other end abuts against the braking portion.

[0013] In some embodiments, the shell includes a first shell and a second shell, the caliper tape and the pressing member are arranged between the first shell and the second shell, one of the sides of the first shell and the second shell close to each other is provided with a positioning column, and the other is provided with a positioning hole, and the positioning column is passed through the positioning hole; wherein an avoidance groove is formed between the rotating part and the braking part, and the avoidance groove is used to avoid the positioning column.

[0014] An embodiment of the utility model has the following advantages or beneficial effects:

[0015] The tape measure provided in this embodiment optimizes the size and distance of the pressing part and the braking part in the pressing member. The projected length of the pressing part on the reference plane is greater than the projected length of the braking part on the reference plane, that is, the ratio of the power arm to the resistance arm is greater than 1:1. According to the lever balance principle, the power is less than the resistance. The lever structure is a labor-saving lever, which saves time and effort and is easy to use. At the same time, during use, the user's pressing stroke of the pressing part is greater than the moving stroke of the braking part, that is, after the user presses the preset stroke, the braking part is slowly lifted to achieve the slow unlocking of the reel tape. The user can adjust the pressing stroke to control the reel tape recovery speed to avoid the situation where the reel tape is recovered too fast and causes scratches to the user, thereby improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to better understand the utility model, reference may be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the utility model. In addition, related elements or components may have different settings as known in the art. In addition, in the drawings, the same reference numerals represent the same or similar components in each of the drawings. By describing its example embodiments in detail with reference to the drawings, the above and other features and advantages of the utility model will become more apparent.

[0017] in:

[0018] Figure 1 The structure diagram of the tape measure of one embodiment of the utility model is shown;

[0019] Figure 2 Shown is an exploded schematic diagram of a tape measure according to an embodiment of the utility model;

[0020] Figure 3 The figure shows a schematic diagram of the internal structure of a tape measure according to an embodiment of the utility model;

[0021] Figure 4 Shown is a schematic diagram of a tape measure in a reset state according to an embodiment of the utility model;

[0022] Figure 5 The diagram shows a state diagram of a tape measure in an embodiment of the utility model when pressed;

[0023] Figure 6 Shown is a schematic diagram of a tape measure in a pressed state according to an embodiment of the utility model.

[0024] The reference numerals are described as follows:

[0025] 1. Housing; 2. Roller tape; 3. Pressing member; 4. Elastic member; 5. Rotating shaft; 6. Limiting member; 7. Resetting member;

[0026] 10. Resistance ribs; 11. Supporting part; 12. Positioning column; 13. Positioning hole; 14. Positioning platform;

[0027] 101. a first housing; 102. a second housing;

[0028] 31. Pressing part; 32. Rotating part; 33. Braking part;

[0029] 41. Avoid gaps. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the example embodiments of the utility model to clearly and completely describe the technical solutions in the example embodiments of the utility model. The example embodiments described herein are only for illustrative purposes and are not intended to limit the scope of protection of the utility model. Therefore, it should be understood that various modifications and changes can be made to the example embodiments without departing from the scope of protection of the utility model.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or more; the term "and / or" includes any and all combinations of one or more associated listed items. In particular, reference to "the / the" object or "an" object is also intended to indicate one of a possible plurality of such objects.

[0032] Unless otherwise specified or explained, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0033] Further, in the description of the present invention, it should be understood that the directional words such as "upper", "lower", "inner", "outer" and the like described in the exemplary embodiments of the present invention are described at the angles shown in the accompanying drawings and should not be understood as limitations on the exemplary embodiments of the present invention. It should also be understood that, in the context, when it is mentioned that an element or feature is connected to another element (one or more) "upper", "lower", or "inner", "outer", it can not only be directly connected to the other (one or more) elements "upper", "lower", or "inner", "outer", but can also be indirectly connected to the other (one or more) elements "upper", "lower", "inner", "outer" through an intermediate element.

[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0035] This embodiment provides a tape measure, such as Figure 1-Figure 3As shown, the measuring tape includes a housing 1 and a measuring tape 2. The measuring tape 2 is rotatably arranged in the housing 1. The measuring tape 2 can rotate forward or reverse relative to the housing 1. For example, the measuring tape 2 rotates forward to unwind the measuring tape 2, and the measuring tape 2 rotates reversely to rewind the measuring tape 2.

[0036] The tape measure also includes a rotating shaft 5, which is arranged in the shell 1. Specifically, the rotating shaft 5 can be fixedly arranged at the center position of the inner wall of the shell 1. The rotating shaft 5 passes through the reel tape 2. The reel tape 2 rotates relative to the rotating shaft 5. The rotating shaft 5 provides a rotation center for the reel tape 2.

[0037] The first direction is specifically the width direction of the housing 1, which can be represented by D1, the axial direction of the rotating shaft 5 is specifically the thickness direction of the housing 1, that is, the rotation axis direction of the rotating part 32, which can be represented by D2, and the third direction is specifically the length direction of the housing 1, which can be represented by D3. The first direction, the second direction and the third direction are mutually perpendicular, and the first direction, the second direction and the third direction only represent the spatial direction and have no substantial meaning. The reference plane is the plane where the first direction and the rotation axis of the rotating part 32 are located, and the reference plane is the plane where the first direction and the second direction are located.

[0038] In one embodiment, the reel tape 2 includes a reel and a tape. The center of the reel is provided with a center hole. A fixed shaft is fixedly provided in the housing 1. The fixed shaft is passed through the center hole. The tape is wound on the reel. The reel provides a winding center for the tape and supports the tape. A measuring scale is provided on the tape. One end of the tape can be snapped onto the rotating shaft 5 or wound on the reel. The other end is connected to a tape head. After the tape is continuously wound on the reel, the tape is gradually wound densely to realize elastic rotation energy storage. When the tape is released, the tightly wound tape is continuously loosened and continuously pulled out.

[0039] The housing 1 is provided with a tape hole, the tape head is arranged at an angle relative to the tape, the tape head passes through the tape hole and is at least partially exposed outside the housing 1, and the tape head serves to limit the tape to prevent the tape from being completely retracted from the tape hole into the housing 1. For example, the tape head is perpendicular to the tape to form a hook-shaped structure, and when the tape is retracted into the housing 1, the tape head just hooks on the surface of the housing 1, making it convenient for the user to pull the tape through the tape head.

[0040] In one embodiment, Figure 1-Figure 3As shown, the housing 1 includes a first housing 101 and a second housing 102. The first housing 101 and the second housing 102 have approximately the same shape, such as a circle, a square, etc. The first housing 101 can be referred to as a left housing, and the second housing 102 can be referred to as a right housing. Patterns can be provided on the outer walls of the first housing 101 and the second housing 102 to increase the friction of the user during use. An opening is provided on the side where the first housing 101 and the second housing 102 are close to each other. The opening of the first housing 101 and the opening of the second housing 102 are arranged opposite to each other. After the first housing 101 and the second housing 102 are closed, a storage space is formed between the first housing 101 and the second housing 102. The reel caliper tape 2 is arranged between the first housing 101 and the second housing 102. The first housing 101 and the second housing 102 provide a storage position for the reel caliper tape 2. Among them, the first housing 101 and the second housing 102 are split structures, which facilitates the installation of the reel caliper tape 2 into the housing 1 and improves the convenience of assembly.

[0041] In one embodiment, a positioning column 12 (eg, Figure 6 As shown in FIG. 1 , the other is provided with a positioning hole 13, and the positioning post 12 is passed through the positioning hole 13. Under the cooperation between the positioning post 12 and the positioning hole 13, the first shell 101 and the second shell 102 are positioned, so that the first shell 101 and the second shell 102 can be accurately aligned, thereby improving the accuracy of assembly.

[0042] For example, a positioning column 12 is provided on the side of the first shell 101 facing the second shell 102, and a positioning platform 14 is provided on the side of the second shell 102 facing the first shell 101 corresponding to the positioning column 12, and a positioning hole 13 is provided on the positioning platform 14. The positioning column 12 passes through the positioning hole 13 of the positioning platform 14, which not only plays a guiding role but also achieves a positioning effect. Under the action of the positioning platform 14, the positioning hole 13 is prevented from being opened during the process of the positioning column 12 passing through the positioning hole 13, and the reliability is better.

[0043] There are multiple positioning posts 12 and positioning holes 13 , and the multiple positioning posts 12 are arranged around the first shell 101 . The multiple positioning posts 12 and the multiple positioning holes 13 are arranged correspondingly to ensure the positioning balance and accuracy of the first shell 101 and the second shell 102 .

[0044] The existing measuring tape uses a manually moved braking device to brake the measuring tape 2 , but the user needs to move the braking device repeatedly, which may cause fatigue to the user's fingers.

[0045] For this reason, Figure 3-Figure 6As shown, the tape measure provided in this embodiment also includes a pressing member 3, which includes a pressing portion 31, a rotating portion 32 and a braking portion 33. The rotating portion 32 and the braking portion 33 are arranged in the shell 1, and the rotating portion 32 is rotatably connected to the shell 1. One end of the rotating portion 32 is connected to the pressing portion 31, and the other end is connected to the braking portion 33. The pressing portion 31 is configured to move relative to the shell 1, so that the rotating portion 32 rotates relative to the shell 1 and drives the braking portion 33 to move, so that the braking portion 33 selectively brakes the reel caliper belt 2.

[0046] When the pressing part 31 is released, the rotation direction of the pressing part 31 and the rotating part 32 is clockwise, and the rotating part 32 also drives the braking part 33 to rotate clockwise, and the braking part 33 is pressed against the tape of the reel caliper 2. When the reel caliper 2 is under pressure, the tape is locked and the user can use it.

[0047] The pressing part 31, the rotating part 32 and the braking part 33 are an integrated structure. Compared with the split structure, the integrated structure reduces the number of parts assembly steps, saves production time and improves production efficiency.

[0048] Since the pressing member 3 is a lever structure, the force applied by the user to the pressing portion 31 is the power F1, and the force generated by the reel caliper tape 2 on the braking portion 33 is the resistance F2. If the length of the pressing portion 31 is approximately the same as the length of the braking portion 33, that is, the length ratio of the pressing portion 31 and the braking portion 33 is 1:1, that is, the ratio of the power arm L1 to the resistance arm L2 is 1:1, according to the lever balance principle, F1*L1=F2*L2, then the power F1 and the resistance F2 are approximately the same. Therefore, during use, the power F1 required to be applied by the user cannot be less than the resistance F2. The lever structure is not a labor-saving lever, and the stroke of the pressing portion 31 pressed by the user and the stroke of the braking portion 33 are approximately the same. If the user presses the pressing portion 31 suddenly or by mistake, the braking portion 33 may suddenly unlock the reel caliper tape 2, causing the reel caliper tape 2 to be recovered too quickly, which may easily cause the reel caliper tape 2 to scratch the user.

[0049] To solve this problem, Figure 3-Figure 6As shown, in the tape measure provided in this embodiment, along the first direction, the projected length of the pressing portion 31 on the reference plane is greater than the projected length of the braking portion 33 on the reference plane.

[0050] The tape measure provided in this embodiment optimizes the size and distance between the pressing part 31 and the braking part 33 in the pressing member 3. Along the first direction, the projected length of the pressing part 31 on the reference plane is greater than the projected length of the braking part 33 on the reference plane. The ratio of the power arm L1' to the resistance arm L2' is greater than 1:1. According to the lever balance principle, F1'*L1'=F2'*L2', then the power F1' is less than the resistance F2'. The lever structure is a labor-saving lever, which saves time and effort and is easy to use. At the same time, during use, the stroke of the user pressing the pressing part 31 is greater than the moving stroke of the braking part 33, that is, after the user presses the preset stroke, the braking part 33 is slowly lifted to achieve the slow unlocking of the reel caliper belt 2. The user can adjust the pressing stroke of the pressing part 31 to control the recovery speed of the reel caliper belt 2 to avoid the situation where the reel caliper belt 2 is recovered too fast and causes scratches to the user, thereby improving the safety of use.

[0051] In one embodiment, along the first direction, a ratio of a projected length of the pressing portion 31 on the reference plane to a projected length of the braking portion 33 on the reference plane is greater than or equal to 2.5.

[0052] In this way, when the pressing stroke of the pressing part 31 is 2.5 mm, the lifting stroke of the brake part 33 is about 1 mm, that is, the user can unlock the brake part 33 only when pressing a larger stroke range, which plays a role of delayed unlocking. According to the pressing stroke of the pressing part 31, the recovery speed of the reel caliper tape 2 can be controlled. In addition, since the length of the pressing part 31 is relatively large, the contact area between the user and the pressing part 31 can be increased, and the user does not need to perform the operation in a specific narrow range, which is convenient for the user to achieve the locking and unlocking process of the reel caliper tape 2 in a larger range.

[0053] In one embodiment, an avoidance groove is formed between the rotating portion 32 and the braking portion 33 , that is, a fold line-like structure is formed between the rotating portion 32 and the braking portion 33 , and the avoidance groove is used to avoid the positioning column 12 to prevent the pressing portion 3 from interfering with and colliding with the positioning column 12 during movement.

[0054] In one embodiment, Figure 3-Figure 6 As shown, the tape measure further includes a reset member 7, which is disposed in the housing 1 and is used to reset the pressing member 3. After the pressing portion 31 of the pressing member 3 is pressed, the reset member 7 can be used to reset the position of the pressing member 3, so that the user can press again.

[0055] Specifically, a support portion 11 is disposed inside the housing 1 , one end of the reset member 7 abuts against the support portion 11 , and the other end abuts against the pressing portion 31 .

[0056] Among them, the reset member 7 can be optionally a cylindrical spring, and the support part 11 plays the role of supporting the reset member 7 and providing a certain supporting force to the reset member 7, so that the two ends of the reset member 7 are respectively abutted against the support part 11 and the pressing part 31. When the user presses the pressing part 31 downward, the pressing part 31 squeezes the reset member 7, and the reset member 7 is in a compressed state. The compressed elastic member 4 itself has a certain elastic force, which can push the pressing member 3 to reset.

[0057] Specifically, a support portion 11 is disposed inside the housing 1 , one end of the reset member 7 abuts against the support portion 11 , and the other end abuts against the braking portion 33 .

[0058] Among them, the reset member 7 can be optionally a cylindrical spring, and the supporting part 11 plays the role of bearing the braking part 33 and providing a certain supporting force to the reset member 7, so that the two ends of the reset member 7 are respectively in contact with the supporting part 11 and the braking part 33. When the user presses the pressing part 31 downward, as the braking part 33 moves, the braking part 33 squeezes the reset member 7, and the reset member 7 is in a compressed state. The compressed elastic member 4 itself has a certain elastic force, which can be used to push the braking part 33 to reset. The braking part 33 drives the pressing part 31 to move through the rotating part 32, so that the pressing part 31 is also reset.

[0059] In some other embodiments, the reset member 7 can also be a torsion spring, and the rotating shaft 5 is passed through the torsion spring. The torsion spring is located between the rotating shaft 5 and the center hole of the rotating part 32. The torsion spring can be used to reset the rotating part 32 through the rotating shaft 5, thereby driving the pressing part 31 and the braking part 33 to reset.

[0060] It can be understood that the present embodiment does not limit the specific form and location of the reset member 7. As long as the reset of the pressing member 3 can be achieved, it is within the protection scope of the present embodiment.

[0061] In one embodiment, the support portion 11 and the positioning platform 14 can be connected by connecting ribs, so that the support portion 11 is not a completely suspended structure, and the positioning platform 14 provides support force for the support portion 11 to a certain extent to prevent the support portion 11 from breaking during the pressing process. At the same time, the support portion 11 is connected to the positioning platform 14 by connecting ribs to form an integral structure, which increases the structural stability, and the connecting ribs can play the role of reinforcing ribs, which are used to strengthen the structure and improve the overall support stability.

[0062] In one embodiment, Figure 3-Figure 6 As shown, the measuring tape further includes an elastic member 4 , which is disposed in the housing 1 , one end of which is connected to an end of the braking portion 33 away from the rotating portion 32 , and the other end of which can abut against the measuring tape 2 .

[0063] The elastic member 4 is arranged between the brake part 33 and the tape of the reel caliper 2, and the elastic member 4 plays a protective role to prevent the rigid contact between the brake part 33 and the reel caliper 2 from causing damage to the reel caliper 2. At the same time, the elastic member 4 can be made of elastic materials such as soft rubber. When the elastic member 4 has a certain elastic force, it can slowly apply a resisting force or a braking force to the reel caliper 2, thereby slowing down the speed of the reel caliper 2 to a certain extent, so as to achieve the purpose of controlling the speed of the reel caliper 2.

[0064] Specifically, the end of the elastic member 4 facing the braking portion 33 may have an opening, and the end of the braking portion 33 away from the rotating portion 32 may extend into the opening, so that the elastic member 4 is at least partially sleeved on the outside of the braking portion 33, and the elastic member 4 and the braking portion 33 are connected by sleeves, which has a simple structure and relatively low production cost. Alternatively, one of the ends of the braking portion 33 and the elastic member 4 close to each other is provided with a slot, and the other is provided with a block, and the block is clamped in the slot, and the elastic member 4 and the braking portion 33 are detachably connected by clamping, which is convenient for the replacement of the elastic member 4 after wear, reduces maintenance costs, and is easy to use.

[0065] In one embodiment, a relief notch 41 is provided on a side of the elastic member 4 facing the reel tape 2 .

[0066] Since the braking part 33 rotates with the rotation of the rotating part 32 under the rotation of the rotating part 32, the avoidance notch 41 is added to the end of the elastic part 4, so that the elastic part 4 and the reel caliper tape 2 can avoid each other during the rotation of the braking part 33. Specifically, the avoidance notch 41 can be a chamfer provided at the lower end of the elastic part 4. When the elastic part 4 is away from the reel caliper tape 2, the contact area between the elastic part 4 and the reel caliper tape 2 is reduced, and the elastic part 4 can be quickly separated from the reel caliper tape 2, and the unlocking response speed of the reel caliper tape 2 is fast; when the elastic part 4 is close to the reel caliper tape 2, since the elastic part 4 has the avoidance notch 41, the elastic part 4 is a structure with a sharp tip, and can quickly contact the reel caliper tape 2.

[0067] In one implementation, a resistance rib 10 is disposed in the housing 1 , and the elastic member 4 and the resistance rib 10 are disposed on both sides of the caliper tape 2 .

[0068] The surface of the resistance rib 10 facing the elastic member 4 fits with the reel caliper tape 2, which can increase the contact area, so that the resistance rib 10 and the elastic member 4 can fully contact the reel caliper tape 2, increase the friction between the reel caliper tape 2, and clamp the reel caliper tape 2 between the elastic member 4 and the resistance rib 10, which can form a good braking effect.

[0069] In one embodiment, the measuring tape further includes a limiting member 6 , which is disposed in the housing 1 and is used to limit the pressing member 3 .

[0070] The limiter 6 can be used to limit the extreme position of the pressing member 3 to prevent the position of the pressing member 3 from being greatly deflected. For example, a convex strip can be provided inside the housing 1, and the convex strip can be provided corresponding to the rotating part 32, the braking part 33 or the elastic member 4. The convex strip can be provided on at least one side of the pressing member 3 along the third direction, and is used to limit the maximum stroke position and the reset position of the pressing part 31.

[0071] It should be noted that the tape measure shown in the drawings and described in this specification is only an example of the principle of the present invention. It should be clearly understood by those skilled in the art that the principle of the present invention is not limited to any details or any components of the device shown in the drawings or described in the specification.

[0072] It should be understood that the utility model does not limit its application to the detailed structure and arrangement of the components proposed in this specification. The utility model can have other embodiments and can be implemented and executed in a variety of ways. The aforementioned deformation forms and modified forms fall within the scope of the utility model. It should be understood that the utility model disclosed and defined in this specification extends to all alternative combinations of two or more individual features mentioned or evident in the text and / or the drawings. All these different combinations constitute multiple alternative aspects of the utility model. The embodiments described in this specification illustrate the best known methods for implementing the utility model and will enable those skilled in the art to utilize the utility model.

[0073] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variation, use, or adaptation of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and example embodiments are to be considered as exemplary only, and the true scope and spirit of the present invention are indicated by the appended claims.

[0074] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of protection of the present invention is limited only by the appended claims.

Claims

1. A tape measure, characterized in that: include: case: A measuring tape reel is rotatably disposed in the housing; A pressing member, the pressing member comprises a pressing portion, a rotating portion and a braking portion, the rotating portion is rotatably connected to the housing, one end of the rotating portion is connected to the pressing portion, and the other end is connected to the braking portion, the pressing portion is configured to move relative to the housing, so that the rotating portion rotates relative to the housing and drives the braking portion to move, so that the braking portion selectively brakes the reel caliper tape; Among them, along the first direction, the projection length of the pressing part on the reference plane is greater than the projection length of the braking part on the reference plane, wherein the first direction and the rotation axis of the rotating part are perpendicular to each other, and the reference plane is the plane where the first direction and the rotation axis of the rotating part are located.

2. The tape measure according to claim 1, characterized in that Along the first direction, a ratio of a projected length of the pressing portion on the reference plane to a projected length of the braking portion on the reference plane is greater than or equal to 2.

5.

3. The tape measure according to claim 1, characterized in that: The pressing portion, the rotating portion and the braking portion are an integrally formed structure.

4. The tape measure according to claim 1, characterized in that: The measuring tape also includes: An elastic member is arranged in the housing, one end of the elastic member is connected to an end of the braking portion away from the rotating portion, and the other end of the elastic member can abut against the reel tape.

5. The tape measure according to claim 4, characterized in that: The elastic member is provided with an avoidance notch on one side facing the reel tape; And / or, resistance ribs are arranged in the housing, and the elastic member and the resistance ribs are arranged on both sides of the measuring tape of the reel.

6. The measuring tape according to claim 1, characterized in that: The measuring tape also includes: The rotating shaft is arranged in the shell and penetrates the rotating part, and the rotating part rotates relative to the rotating shaft.

7. The tape measure according to claim 1, characterized in that: The measuring tape also includes: A limiting member is arranged in the housing and is used for limiting the position of the pressing member.

8. The measuring tape according to any one of claims 1 to 7, characterized in that: The measuring tape also includes: A reset member is arranged in the housing and is used for resetting the pressing member.

9. The tape measure according to claim 8, characterized in that A support portion is provided inside the housing, one end of the reset member abuts against the support portion, and the other end abuts against the pressing portion; And / or, a support portion is provided inside the shell, one end of the reset member abuts against the support portion, and the other end abuts against the braking portion.

10. The measuring tape according to any one of claims 1 to 7, characterized in that: The housing comprises a first housing and a second housing, the caliper tape and the pressing member are arranged between the first housing and the second housing, one of the sides of the first housing and the second housing close to each other is provided with a positioning column, and the other is provided with a positioning hole, and the positioning column is passed through the positioning hole; Wherein, an avoidance groove is formed between the rotating part and the braking part, and the avoidance groove is used to avoid the positioning column.

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