Buffering contraction measuring tape

Abstract

The utility model relates to a buffer contraction measuring tape, which belongs to the technical field of measuring tapes and comprises a damper, the damper comprises a rotating member and a speed reducing member, the rotating member is provided with outer teeth and inner teeth, the outer teeth are arranged on the outer wall of the rotating member, the inner teeth are arranged on the inner wall of the rotating member, the speed reducing member is arranged in the rotating member, and the speed reducing member is arranged on the inner wall of the rotating member. The speed reducing part is in meshed connection with the inner teeth; the telescopic assembly comprises a rotating seat and a first elastic piece, the first elastic piece is fixedly arranged in the rotating seat, a rotating gear is arranged on the rotating seat, and the rotating gear is connected with the outer teeth in a meshed mode; the measuring scale is arranged on the outer wall of the rotating seat and connected with the first elastic piece, the rotation speed of the rotating piece is reduced through the speed reducing piece, the rotation speed of the telescopic assembly is further reduced, and therefore the recovery speed of the measuring scale can be controlled, and slow recovery of the measuring scale is achieved; and the situation that hands are cut due to too high recovery speed is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of tape measures, and in particular relates to a buffering shrinking tape measure. Background Art

[0002] The tape measure is a common measuring tool in daily life. The one you often see is the steel tape measure, which is commonly used in construction and decoration, and is also one of the essential tools for the family. The tape measure can be rolled up because there is a spring inside the tape measure. When it is pulled out to measure the length, it actually lengthens the ruler and the spring. Once the measurement is completed, the spring inside the tape measure will automatically shrink, and the ruler will also shrink under the action of the spring force, so the tape measure will roll up.

[0003] However, the measuring tape in the prior art retracts too quickly after the measurement is completed, and the material of the steel measuring tape can easily cut the hand. Utility Model Content

[0004] In order to solve the problem that the current measuring tapes on the market shrink too fast and cause hand cuts, the utility model provides a buffer shrinking measuring tape.

[0005] The technical solution of the utility model is:

[0006] The utility model discloses a buffer shrinking measuring tape, comprising:

[0007] A damper, the damper comprising a rotating member and a speed reducing member, the rotating member being provided with external teeth and internal teeth, the external teeth being provided on the outer wall of the rotating member, the internal teeth being provided on the inner wall of the rotating member, the speed reducing member being provided in the rotating member, and the speed reducing member being meshedly connected with the internal teeth;

[0008] A telescopic assembly, the telescopic assembly comprising a rotating seat and a first elastic member, the first elastic member is fixedly disposed in the rotating seat, the rotating seat is provided with a rotating gear, and the rotating gear is meshedly connected with the external teeth;

[0009] A measuring ruler is arranged on the outer wall of the rotating seat and is connected to the first elastic member.

[0010] Furthermore, the rotating seat includes a seat body and a seat cover, the seat cover is detachably covering the seat body, the first elastic member is arranged on the inner wall of the seat body, the measuring ruler is arranged on the outer wall of the seat body, and the rotating gear is arranged on the seat cover.

[0011] Furthermore, a convex shaft is provided in the rotating member, a groove is provided in the speed reducing member, and the groove is sleeved on the convex shaft.

[0012] Furthermore, the speed reducer comprises an upper section, a lower section and a convex tooth, wherein the convex tooth is located between the upper section and the lower section, and the convex tooth is meshedly connected to the internal tooth.

[0013] Furthermore, the damper also includes a cover, and the cover is sleeved on the outer wall of the upper section.

[0014] Furthermore, a rubber ring is provided between the cover and the speed reducer.

[0015] Furthermore, it also includes a shell, a connecting column is provided on one side of the shell, a connecting hole is provided on the speed reducer, and the connecting column is arranged in the connecting hole.

[0016] Furthermore, it also includes a limiting component, which includes a rotating wheel, a swing arm and a second elastic member. The seat cover is provided with a plurality of recesses, the swing arm abuts against the recesses, the second elastic member is fixed on the swing arm, the rotating wheel is provided above the swing arm, and the rotating wheel can abut against the swing arm.

[0017] Furthermore, the swing arm is provided with a convex foot, a first convex block, a second convex block and a convex column, the convex foot is in conflict with the recess, the second elastic member is fixed in the convex column, and the rotating wheel is arranged between the first convex block and the second convex block.

[0018] Furthermore, the rotating wheel is provided with a first tooth groove and a second tooth groove, the first tooth groove conflicts with the first protrusion, and the second tooth groove conflicts with the second protrusion.

[0019] The beneficial effects of the utility model are:

[0020] A damper, a telescopic assembly and a measuring ruler are arranged in the measuring tape, the damper comprises a rotating member and a speed reducing member, the rotating member is provided with external teeth and internal teeth, the telescopic assembly is provided with a rotating gear, the rotating gear is meshed and connected with the external teeth, the speed reducing member is arranged inside the rotating member, during the rotation of the telescopic assembly, the meshing transmission rotating member rotates, the speed reducing member is also meshed and connected with the rotating member, the speed reducing member reduces the rotation speed of the rotating member, and further slows down the rotation speed of the telescopic assembly, so that the recovery speed of the measuring ruler can be controlled, and the measuring ruler can be slowly recovered, avoiding the situation where the recovery speed is too fast and the hand is cut. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The schematic diagram of the decomposition structure of a buffer shrink tape measure of the utility model is shown in FIG. Figure 1 ;

[0022] Figure 2 The schematic diagram of the decomposition structure of a damper for a buffering and retracting tape measure of the utility model Figure 1 ;

[0023] Figure 3 The schematic diagram of the decomposition structure of a damper for a buffering and retracting tape measure of the utility model Figure 2 ;

[0024] Figure 4 It is a schematic cross-sectional structure diagram of a damper for a buffering and retracting tape measure according to the utility model;

[0025] Figure 5 It is a three-dimensional structural schematic diagram of a damper for a buffering and retracting tape measure according to the utility model;

[0026] Figure 6 The schematic diagram of the decomposition structure of a buffer shrink tape measure of the utility model is shown in FIG. Figure 2 ;

[0027] Figure 7 This is a schematic diagram of the positional relationship of a damper, a rotating gear and a limit assembly of a buffering and retracting tape measure of the utility model;

[0028] Figure 8 for Figure 7 The schematic diagram of the structure when the housing and the runner are disassembled is omitted;

[0029] Fig. 9 This is a schematic diagram of the back structure of a rotating wheel of a buffering and shrinking tape measure of the utility model;

[0030] Figure numerals: 1, damper, 11, rotating member, 111, external teeth, 112, internal teeth, 113, convex shaft, 12, speed reduction member, 121, groove, 122, upper section, 123, lower section, 124, convex teeth, 125, connecting hole, 13, cover, 14, rubber ring, 2, telescopic assembly, 21, rotating seat, 211, seat body, 212, seat cover, 2121, rotating gear, 2122, recess, 22, first elastic member, 3, measuring ruler, 4, housing, 41, connecting column, 5, limiting assembly, 51, rotating wheel, 511, first tooth groove, 512, second tooth groove, 52, swing arm, 521, convex foot, 522, first protrusion, 523, second protrusion, 524, protrusion column, 53, second elastic member. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] It should be noted that when a component is referred to as being "installed on", "provided on", "covered on", "sleeved on", or "locked on" another component, it can be directly on the other component or indirectly on the other component.

[0033] It should be understood that, in the description of the present utility model, “several” means two or more than two, unless otherwise clearly and specifically defined.

[0034] In addition, the orientations or positional relationships indicated by terms such as "inside", "upper", "between", "both sides", "one side", "top", "bottom", and "side" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] It should be noted that the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of the features.

[0036] It should be noted that the "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. Among them, A and B can be singular or plural respectively.

[0037] Example 1

[0038] Please refer to Figure 1-Figure 6 The utility model provides a buffer shrinking tape measure, comprising:

[0039] A damper 1, comprising a rotating member 11 and a speed reducing member 12, wherein the rotating member 11 is provided with an outer tooth 111 and an inner tooth 112, wherein the outer tooth 111 is provided on the outer wall of the rotating member 11, and the inner tooth 112 is provided on the inner wall of the rotating member 11, and the speed reducing member 12 is provided inside the rotating member 11, and when the rotating member 11 rotates, the speed reducing member 12 also rotates inside the rotating member 11, and the speed reducing member 12 is meshedly connected with the inner tooth 112, that is, the speed reducing member 12 rubs against the inner tooth 112, thereby slowing down the speed of rotation of the rotating member 11;

[0040] The telescopic assembly 2 comprises a rotating seat 21 and a first elastic member 22, wherein the first elastic member 22 is fixedly disposed in the rotating seat 21, a rotating gear 2121 is disposed on the rotating seat 21, and the rotating gear 2121 is meshedly connected to the external teeth 111, and the first elastic member 22 is a spiral spring;

[0041] The measuring ruler 3 is arranged on the outer wall of the rotating seat 21. Specifically, the measuring ruler 3 is rolled up on the outer wall of the rotating seat 21, and the measuring ruler 3 is connected to the first elastic member 22. The first elastic member 22 is responsible for providing elastic force to the measuring ruler 3. When the measuring tape is stretched, the measuring ruler 3 is pulled out from the rolled-up ring shape to a straight line, driving the rotating seat 21 to rotate, and the first elastic member 22 is also stretched; when the measuring tape is recovered, the rotating seat 21 is driven to rotate under the elastic restoring force of the first elastic member 22, and the measuring ruler 3 is recovered from the straight line to the rolled-up ring shape, but due to the setting of the damper 1, the measuring ruler 3 can be slowly recovered.

[0042] Specifically, the rotating seat 21 includes a seat body 211 and a seat cover 212, the seat cover 212 can detachably cover the seat body 211, the first elastic member 22 is arranged on the inner wall of the seat body 211, the measuring ruler 3 is arranged on the outer wall of the seat body 211, and the rotating gear 2121 is arranged on the seat cover 212. When the rotating seat 21 rotates, the rotating gear also rotates, so that the damper 1 controls the rotating gear to rotate, which can play a role in deceleration. Figure 1 The seat body 211 is provided with a plurality of protrusions, and the seat cover 212 is provided with a clamping hole, in which the protrusions are clamped, so that the seat cover 212 is fixed in the seat body 211.

[0043] The specific structure of the damper 1 is described below:

[0044] The rotating member 11 is provided with a convex shaft 113 , and the speed reduction member 12 is provided with a groove 121 . The groove 121 is sleeved on the convex shaft 113 , so that the speed reduction member 12 rotates together with the rotating member 11 .

[0045] The speed reducer 12 includes an upper section 122 , a lower section 123 and a convex tooth 124 . The convex tooth 124 is located between the upper section 122 and the lower section 123 . The convex tooth 124 is meshed and connected with the inner tooth 112 , and the inner tooth 112 is rubbed by the convex tooth 124 .

[0046] The damper 1 further includes a cover 13 , which is sleeved on the outer wall of the upper section 122 . The speed reducer 12 is confined within the rotating member 11 by the cover 13 .

[0047] A rubber ring 14 is provided between the cover 13 and the speed reducer 12 to enhance sealing performance.

[0048] How the damper 1 stably engages with the telescopic component 2 for transmission:

[0049] It also includes a shell 4, which wraps the damper 1, the telescopic assembly 2 and the measuring ruler 3. A connecting column 421 is provided on one side of the shell 4, and a connecting hole 125 is provided on the speed reducer 12. The connecting column 421 is arranged in the connecting hole 125, so that the damper 1 can stably engage with the rotating gear 2121 of the telescopic assembly 2.

[0050] Example 2

[0051] Reference Figure 6-Figure 9 , which is different from Example 1 in that: it also includes a limit assembly 5, the limit assembly 5 is used to control the length of the stretched measuring ruler 3, the limit assembly 5 includes a rotating wheel 51, a swing arm 52 and a second elastic member 53, the seat cover 212 is provided with a plurality of notches 2122, the swing arm 52 conflicts with the notches 2122, the second elastic member 53 is fixed on the swing arm 52, the rotating wheel 51 is provided above the swing arm 52, and the rotating wheel 51 can conflict with the swing arm 52, when the seat cover 212 of the rotating seat 21 rotates, the notches 2122 do not conflict with the swing arm 52, and when the seat cover 212 of the rotating seat 21 does not rotate, the swing arm 52 conflicts with the notches 2122.

[0052] The swing arm 52 is provided with a convex foot 521, a first convex block 522, a second convex block 523 and a convex column 524, the convex foot 521 is in conflict with the recess 2122, the second elastic member 53 is fixed in the convex column 524, and the rotating wheel 51 is arranged between the first convex block 522 and the second convex block 523.

[0053] The rotating wheel 51 is provided with a first tooth groove 511 and a second tooth groove 512. Fig. 9 The depths of the first tooth groove 511 and the second tooth groove 512 are different. As the swing arm 52 swings, it is possible that the first tooth groove 511 conflicts with the first protrusion 522 or the second tooth groove 512 conflicts with the second protrusion 523. When the first tooth groove 511 conflicts with the first protrusion 522, or when the second tooth groove 512 conflicts with the second protrusion 523, the lengths of the measuring rulers 3 of the two are different, so that the measuring tape can be set to suspend recovery when it is stretched out by 50 cm; or the measuring tape can be set to suspend recovery when it is stretched out by 100 cm.

[0054] Example 3

[0055] A locking component is provided on the basis of Embodiment 1, and the locking component may be a manual locking component or an automatic locking component, so that the user can lock the measuring ruler 3 when it is stretched to a required length according to the needs, and keep the current length.

[0056] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A cushioning shrink tape measure, characterized in that: include: A damper (1), the damper (1) comprising a rotating member (11) and a speed reducing member (12), the rotating member (11) being provided with external teeth (111) and internal teeth (112), the external teeth (111) being provided on the outer wall of the rotating member (11), the internal teeth (112) being provided on the inner wall of the rotating member (11), the speed reducing member (12) being provided in the rotating member (11), and the speed reducing member (12) being meshingly connected with the internal teeth (112); A telescopic assembly (2), the telescopic assembly (2) comprising a rotating seat (21) and a first elastic member (22), the first elastic member (22) being fixedly disposed in the rotating seat (21), the rotating seat (21) being provided with a rotating gear (2121), the rotating gear (2121) being meshedly connected to the external teeth (111); A measuring ruler (3), wherein the measuring ruler (3) is arranged on the outer wall of the rotating seat (21), and the measuring ruler (3) is connected to the first elastic member (22).

2. The cushioning shrink tape measure according to claim 1, characterized in that: The rotating seat (21) comprises a seat body (211) and a seat cover (212); the seat cover (212) is detachably mounted on the seat body (211); the first elastic member (22) is arranged on the inner wall of the seat body (211); the measuring ruler (3) is arranged on the outer wall of the seat body (211); and the rotating gear (2121) is arranged on the seat cover (212).

3. The cushioning shrink tape measure according to claim 1, characterized in that: The rotating member (11) is provided with a convex shaft (113), the speed reducing member (12) is provided with a groove (121), and the groove (121) is sleeved on the convex shaft (113).

4. The cushioning shrink tape measure according to claim 3, characterized in that: The speed reducer (12) comprises an upper section (122), a lower section (123) and a convex tooth (124), wherein the convex tooth (124) is located between the upper section (122) and the lower section (123), and the convex tooth (124) is meshedly connected to the inner tooth (112).

5. The cushioning shrink tape measure according to claim 4, characterized in that: The damper (1) further comprises a cover (13), wherein the cover (13) is sleeved on the outer wall of the upper section (122).

6. The cushioning shrink tape measure according to claim 5, characterized in that: A rubber ring (14) is provided between the cover (13) and the speed reducer (12).

7. The cushioning shrink tape measure according to claim 1, characterized in that: It also comprises a shell (4), a connecting column (421) is provided on one side of the shell (4), a connecting hole (125) is provided on the speed reducer (12), and the connecting column (421) is arranged in the connecting hole (125).

8. The cushioning shrink tape measure according to claim 2, characterized in that: The invention also comprises a limiting assembly (5), wherein the limiting assembly (5) comprises a rotating wheel (51), a swing arm (52) and a second elastic member (53); a plurality of notches (2122) are provided on the seat cover (212); the swing arm (52) abuts against the notches (2122); the second elastic member (53) is fixed on the swing arm (52); the rotating wheel (51) is provided above the swing arm (52), and the rotating wheel (51) can abut against the swing arm (52).

9. The cushioning retractable tape measure according to claim 8, characterized in that: The swing arm (52) is provided with a convex foot (521), a first convex block (522), a second convex block (523) and a convex column (524); the convex foot (521) is in contact with the recess (2122); the second elastic member (53) is fixed in the convex column (524); and the rotating wheel (51) is arranged between the first convex block (522) and the second convex block (523).

10. The cushioning retractable tape measure according to claim 9, characterized in that: The rotating wheel (51) is provided with a first tooth groove (511) and a second tooth groove (512), the first tooth groove (511) abuts against the first protrusion (522), and the second tooth groove (512) abuts against the second protrusion (523).

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