Limiting ruler hook structure
By designing a limit structure at the connection between the ruler hook and the ruler belt of the tape measure, the problem of easily causing deformation and accuracy error after the connection between the ruler hook and the ruler belt in the prior art is solved, and higher measurement accuracy and lower production costs are achieved.
Patent Information
- Application Number
- CN202421635924.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-11
AI Technical Summary
The connecting structure of the existing tape measure hook and ruler belt is prone to deformation after a long time of use, resulting in a decrease in measurement accuracy and accuracy errors during riveting, which increases cost and defective rate.
A limit ruler hook structure is designed. By setting a guard strip and limit rivets on the ruler belt, and setting protrusions and guide holes on the ruler hook, the movement of the ruler hook can be controlled within a fixed range, avoiding deformation of the ruler belt and reducing measurement accuracy.
The displacement of the ruler hook is effectively controlled, the measurement accuracy of the tape measure is improved, the deformation of the ruler belt caused by the movement of the ruler hook is reduced, and the impact of assembly accuracy on measurement accuracy is reduced.
Smart Images
Figure CN222951631U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of tape measures, and in particular relates to a limit ruler hook structure. Background Art
[0002] The hook of an existing tape measure is usually an L-shaped iron structure, which is installed on the tape by rivets. When measuring, the part of the hook perpendicular to the tape is usually used as the reference plane for measurement, that is, when the hook is hooked on an object for measurement, the inner end face of the hook facing the tape is used as the reference plane for measurement, and when the hook is against the object for measurement, the outer end face of the hook away from the tape is used as the reference plane for measurement. Therefore, in order to avoid deviations in measurement results, when designing tape measures today, the hook is usually designed to be able to move a certain distance relative to the tape. The distance is usually the thickness of the part perpendicular to the hook and the tape, thereby offsetting the influence of its thickness, which is the hook length compensation function, thereby making the measurement more accurate.
[0003] The existing ruler hook and ruler tape are connected by rivets fixed on the ruler tape. A waist-shaped hole is opened along the length direction of the part where the ruler hook is parallel to the ruler tape. The ruler hook is set on the rivet through the waist-shaped hole. When measuring an object to hook or hold the object, the ruler hook can slide relative to the rivet and the ruler tape. However, after a long period of use, the part where the ruler hook and the ruler tape are connected will still deform. In particular, the ruler hook is easily deformed at the ruler tape where the rivet is riveted during use, which causes relative movement between the rivet and the ruler tape, thereby increasing the movement of the ruler hook, which in turn affects the measurement accuracy of the tape measure. In addition, when the rivet is riveted to the ruler tape, there is also a large precision error in the riveting extrusion. To achieve high precision in the process, strict control of costs and defective rates is required. Utility Model Content
[0004] In order to solve the technical problems existing in the prior art, the present application provides a limit ruler hook structure which can easily control the displacement of the ruler hook relative to the ruler tape and can improve the measurement accuracy.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A limit ruler hook structure comprises a ruler hook, wherein the ruler hook comprises a connecting portion connected to the upper end of a ruler tape and a hook portion arranged perpendicular to the ruler tape, a guard sheet is fixedly connected to the lower end of the ruler tape along its length direction, a limit rivet is riveted on the guard sheet, the limit rivet is fixedly penetrated in the ruler tape and extends to the top of the ruler tape, a guard sheet positioning hole is opened on the guard sheet along its length direction, and a ruler tape positioning hole is opened on the ruler tape at the guard sheet positioning hole; a ruler hook protrusion is arranged on the connecting portion, the ruler hook protrusion can be slidably penetrated in the ruler tape positioning hole and the guard sheet positioning hole in turn, a guide hole is opened on the connecting portion along its length direction, and the guide hole is sleeved on the limit rivet.
[0007] Preferably, a limiting hole is provided on the ruler hook protrusion, and the limiting hole penetrates the ruler hook protrusion perpendicular to the ruler tape direction.
[0008] Preferably, the dimension of the guide hole in the length direction of the tape is not less than the dimension of the guard plate positioning hole in the length direction of the tape.
[0009] Preferably, the dimension of the tape positioning hole in the tape length direction is not less than the dimension of the guard plate positioning hole in the tape length direction.
[0010] Preferably, two limiting rivets are provided and two guide holes are provided correspondingly.
[0011] Preferably, the two limiting rivets are respectively arranged on both sides of the ruler hook protrusion.
[0012] Preferably, the guard plate is fixed to the ruler tape via fixing rivets.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] Compared with the prior art, the utility model is not only simple in structure and convenient to process, but also by providing a guard plate and a ruler hook protrusion, the ruler hook protrusion is moved in the positioning hole of the guard plate, so that the movement of the ruler hook is controlled within a fixed range. Even after long-term use, the movement of the ruler hook will not cause deformation of the ruler tape and increase in movement, and it is not easily affected by assembly accuracy, thereby improving the measurement accuracy of the tape measure.
[0015] In addition, by providing a limiting hole in the ruler hook protrusion, it is convenient to insert a nail or a pencil, etc., and use it as a rotation axis to draw an arc. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.
[0017] Figure 2 It is a schematic diagram of the structure of the utility model when viewed from above.
[0018] Figure 3 It is a schematic diagram of the explosion structure of the utility model.
[0019] Figure 4 for Figure 2 Schematic diagram of the AA section structure.
[0020] In the figure: 1. ruler hook, 11. connecting part, 111. ruler hook protrusion, 112. guide hole, 113. limit hole, 12. hook part, 2. ruler tape, 21. ruler tape limit hole, 22. ruler tape positioning hole, 3. guard plate, 31. guard plate positioning hole, 4. fixing rivet, 5. limit rivet. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention. Example
[0023] See attached Figure 1 , 2 As shown in Figures 3 and 4, a limit ruler hook structure comprises a ruler hook 1, wherein the ruler hook 1 comprises a connecting portion 11 connected to the upper end of the ruler tape 2 and a hook portion 12 arranged perpendicular to the ruler tape 2, and the hook portion 12 and the connecting portion 11 are integrally formed.
[0024] A guard plate 3 is fixedly connected to the lower end of the ruler tape 2 along its length direction. Specifically, in this embodiment, the guard plate 3 is fixed to the ruler tape 2 via a fixing rivet 4 .
[0025] A limit rivet 5 is riveted on the guard plate 3, and the limit rivet 5 is riveted inside the guard plate 3. A tape limit hole 21 is opened on the tape 2 corresponding to the limit rivet 5. The limit rivet 5 passes through the tape limit hole 21 of the tape 2 and extends to the top of the tape 2. A guard plate positioning hole 31 is opened on the guard plate 3 along its length direction. The guard plate positioning hole 31 is a waist-shaped through hole structure, and a tape positioning hole 22 is opened on the tape 2 at the guard plate positioning hole 31.
[0026] A ruler hook protrusion 111 is provided in the middle of the connecting portion 11. The ruler hook protrusion 111 is a cylindrical structure arranged downward and can be slidably penetrated in the ruler tape positioning hole 21 and the guard plate positioning hole 31 in sequence. A guide hole 112 is provided on the connecting portion 11 along its length direction. The guide hole 112 is a waist-shaped through-hole structure and is sleeved on the limit rivet 5. Thus, through the above structure, the ruler hook 1 is fixed on the ruler tape 2 through the limit rivet 5. When the ruler hook 1 hooks or supports an object, the connecting portion 11 slides relative to the limit rivet 5, the ruler tape 2 and the guard plate 3 under the guiding action of the guide hole 112, and the ruler hook protrusion 111 can slide relative to the ruler tape 2 under the guiding action of the guard plate positioning hole 31.
[0027] In order to improve the connection strength between the connecting portion 11 and the ruler tape 2, in the present embodiment, two limiting rivets 5 are provided and two corresponding guide holes 112 are provided, and the two limiting rivets 5 are respectively provided on both sides of the ruler hook protrusion 111.
[0028] Furthermore, in order to use the tape measure provided with the present limit hook structure to draw a circle, a limit hole 113 is provided on the hook protrusion 111, and the limit hole 113 penetrates the hook protrusion 111 perpendicularly to the direction of the tape 2. In the actual production process, the connecting portion 11 can be stamped to stamp out the hook protrusion 111 and the limit hole 113.
[0029] In order to improve the measurement accuracy and avoid the limit rivet 5 from loosening or the deformation and loosening of the connection between the limit rivet 5 and the tape 2, which may lead to a decrease in the measurement accuracy, in this embodiment, the ruler hook protrusion 111 is limited by the guard plate positioning hole 31, that is, the sliding distance of the ruler hook protrusion 111 in the guard plate positioning hole 31 is used to compensate for the influence of different measurement reference surfaces, that is, the sliding distance of the ruler hook protrusion 111 in the guard plate positioning hole 31 is equal to the thickness of the hook portion 12. Since the structural strength of the guard plate 3 is greater than the structural strength of the tape 2, the relative movement between the rivet and the tape can be avoided, thereby increasing the movement of the ruler hook and affecting the measurement accuracy of the tape measure. In addition, by controlling the stamping accuracy of the ruler hook protrusion 111, the assembly and measurement accuracy can be controlled.
[0030] Based on the above-mentioned limiting of the ruler hook protrusion 111 by the guard plate positioning hole 31, in this embodiment, the size of the ruler tape positioning hole 22 in the length direction of the ruler tape 2 is not less than the size of the guard plate positioning hole 31 in the length direction of the ruler tape 2, thereby preventing the ruler hook protrusion 111 from being blocked by the ruler tape 2 at the edge of the ruler tape positioning hole 22 when the ruler hook protrusion 111 moves. In addition, the size of the guide hole 112 in the length direction of the ruler tape 2 is not less than the size of the guard plate positioning hole 31 in the length direction of the ruler tape 2, thereby preventing the ruler hook protrusion 111 from being blocked by the limiting rivet 5 on the edge of the guide hole 112, so that the ruler hook protrusion 111 cannot move from one end of the guard plate positioning hole 31 to the other end.
[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A limit ruler hook structure, comprising a ruler hook, wherein the ruler hook comprises a connecting portion connected to the upper end of the ruler tape and a hook portion arranged perpendicular to the ruler tape, characterized in that: A guard sheet is fixedly connected to the lower end of the tape along its length direction, a limit rivet is riveted on the guard sheet, the limit rivet is fixedly penetrated in the tape and extends above the tape, a guard sheet positioning hole is opened on the guard sheet along its length direction, and a tape positioning hole is opened on the tape at the guard sheet positioning hole; A ruler hook protrusion is arranged on the connecting part, and the ruler hook protrusion can be slidably penetrated into the ruler tape positioning hole and the guard plate positioning hole in turn. A guide hole is opened on the connecting part along its length direction, and the guide hole is sleeved on the limiting rivet.
2. A limit ruler hook structure according to claim 1, characterized in that: A limiting hole is provided on the ruler hook protrusion, and the limiting hole penetrates the ruler hook protrusion perpendicular to the ruler tape direction.
3. The limit ruler hook structure according to claim 1, characterized in that: The dimension of the guide hole in the length direction of the tape is not less than the dimension of the guard plate positioning hole in the length direction of the tape.
4. The limit ruler hook structure according to claim 1, characterized in that: The dimension of the tape positioning hole in the tape length direction is not less than the dimension of the guard plate positioning hole in the tape length direction.
5. The limit ruler hook structure according to claim 1, characterized in that: The limiting rivets are provided with two and the guide holes are provided with two correspondingly.
6. The limit ruler hook structure according to claim 1, characterized in that: The two limiting rivets are respectively arranged on both sides of the ruler hook protrusion.
7. The limit ruler hook structure according to claim 1, characterized in that: The guard plate is fixed to the ruler tape via fixing rivets.