Wrench with adjustable caliber

Abstract

A wrench with an adjustable caliber comprises a large gear, an intermediate gear, a small gear, a rotating mechanism and meshing teeth, the large gear is annular, and inner teeth are arranged on the inner side of the large gear; the intermediate gear is arranged in the bull gear, and the intermediate gear and the bull gear are coaxially arranged; the plurality of pinions are arranged between the bull gear and the intermediate gear, and are meshed with inner teeth of the bull gear and the intermediate gear; the rotating mechanism is used for controlling whether the large gear is locked or not. One side of the top of each meshing tooth is fixedly connected with a pinion through a pinion rotating shaft; the intermediate gear drives the meshing teeth to rotate through the small gear, and then the caliber formed by the meshing teeth is adjusted. The middle rotating shaft drives the middle gear to rotate, the middle gear drives the small gear to rotate, the small gear drives the meshing teeth to rotate along the small gear rotating shaft through the small gear rotating shaft, the caliber formed by the meshing teeth is adjusted, rapid and accurate adjustment is achieved so as to adapt to bolts and nuts of different sizes, and meanwhile lifting operation is convenient and fast, and carrying is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of wrenches, in particular to a wrench with adjustable caliber. Background Art

[0002] A wrench is a commonly used installation and removal tool. It is a hand tool used to turn bolts, screws, nuts, and other threaded fasteners, either through the opening or through the hole. Wrenches are usually made of structural steel, such as carbon or alloy steel.

[0003] When using existing wrenches to operate on bolts or nuts of different sizes, it is necessary to replace different wrenches or replace wrench heads of different sizes to operate, which requires carrying a lot of tools and is time-consuming.

[0004] For this purpose, we propose a wrench with adjustable caliber. Utility Model Content

[0005] In response to the shortcomings of the above-mentioned existing production technology, the applicant provides a wrench with adjustable caliber, so that the intermediate gear is driven to rotate through the intermediate shaft, the intermediate gear drives the pinion to rotate, and the pinion drives the meshing teeth to rotate along the pinion shaft through the pinion shaft, thereby adjusting the caliber of multiple meshing teeth to achieve fast and precise adjustment to adapt to bolts and nuts of different sizes, while improving operation convenience and portability.

[0006] The technical solutions adopted in this utility model are as follows:

[0007] A wrench with adjustable caliber, comprising:

[0008] The large gear is annular and has internal teeth on the inside;

[0009] An intermediate gear is arranged inside the large gear, and the intermediate gear and the large gear are arranged coaxially;

[0010] A plurality of small gears are arranged between the large gear and the intermediate gear and mesh with the internal teeth of the large gear and the intermediate gear;

[0011] Rotating mechanism, used to control whether the large gear is locked;

[0012] A plurality of teeth, with one side of the top of each tooth fixedly connected to the pinion through a pinion shaft;

[0013] Among them, the intermediate gear drives the meshing teeth to rotate through the pinion gear, thereby adjusting the caliber of the multiple meshing teeth.

[0014] It is further characterized by:

[0015] The large gear is arranged on a partition plate, and a shell is arranged on the outer side of the partition plate.

[0016] The intermediate gear is provided with an intermediate rotating shaft, the intermediate rotating shaft is rotationally arranged on the partition plate, the intermediate rotating shaft penetrates through the shell, and one end of the intermediate rotating shaft is provided with a handle.

[0017] The large gear is provided with a clamping groove on the outside.

[0018] The rotating mechanism comprises a first clamping strip and a second clamping strip, the first clamping strip and the second clamping strip are arranged on the two sides of the large gear respectively, one end of the first clamping strip away from the large gear is rotationally connected with the partition plate, one end of the second clamping strip away from the large gear is rotationally connected with the partition plate, and one end of the first clamping strip and one end of the second clamping strip can rotate into the clamping groove of the large gear.

[0019] The first spring is arranged between the first clamping strip and the shell, the second spring is arranged between the second clamping strip and the shell, the first clamping strip rotates to one side of the large gear through the elastic force of the first spring, and the second clamping strip rotates to one side of the large gear through the elastic force of the second spring.

[0020] The rotating member is arranged between the first clamping strip and the second clamping strip, the rotating member penetrates through the shell, the rotating member is in contact with the partition plate, and the frictional force between the rotating member and the partition plate and the shell is greater than the elastic force of the first spring and the second spring.

[0021] The utility model discloses the following advantages:

[0022] The utility model discloses compact structure, reasonable, convenient operation, and the rotating member is driven to one side, and the intermediate rotating shaft is driven to rotate through the handle, and the intermediate gear is driven to rotate through the intermediate rotating shaft, and the pinion is driven to rotate through the intermediate gear, and the large gear is driven to rotate through the pinion, and the pinion is driven to rotate along the pinion pivot through the pinion pivot, and the caliber that a plurality of toothing groups adjust, after the caliber adjustment is appropriate, and the rotating member is driven to the middle, and the first clamping strip and the second clamping strip are respectively in the clamping groove of the large gear under the elastic force of the first spring and the second spring, and the large gear is fixed, and then the operation of the bolt or the nut is carried out, realizes quick, accurate adjustment, to adapt to the bolt and the nut of different sizes, and operation convenient is improved simultaneously, and convenient to carry.

[0023] Meanwhile, the utility model still has following advantages:

[0024] (1) under the elastic force of the first spring, the one end of the first clamping strip will move to one side of the large gear, under the elastic force of the second spring, the one end of the second clamping strip will move to one side of the large gear, and the one end of the first clamping strip and the one end of the second clamping strip are clamped in the clamping groove on the two sides of the large gear, and then the large gear is limited.

[0025] (2) the friction between the rotating member and the shell and the partition plate is greater than the elastic force of the first spring and the second spring, when the rotating member rotates, the rotating member rotates to the first clamping strip side or to the second clamping strip side, when the rotating member rotates to the first clamping strip side, the rotating member drives the first clamping strip to move, so that one end of the first clamping strip is away from the clamping groove of the gear wheel, at this time, one end of the second clamping strip is in the clamping groove of the gear wheel under the elastic force of the second spring, so that the gear wheel can rotate to the second clamping strip side; the friction between the rotating member and the shell and the partition plate is greater than the elastic force of the first spring, therefore, after the rotating member is loosened, the rotating member will not move under the elastic force of the first spring, that is, the rotating member can realize self-locking. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 Structure diagram of the utility model Figure One .

[0027] Figure 2 Structure diagram of the utility model Figure Two .

[0028] Figure 3 Structure diagram of the utility model

[0029] Figure 4 Structure diagram of the utility model

[0030] Wherein: 1, handle; 2, shell; 3, partition plate; 4, gear wheel; 401, inner tooth; 402, clamping groove; 5, intermediate gear; 501, intermediate rotating shaft; 6, pinion; 601, pinion rotating shaft; 7, meshing tooth; 8, rotating mechanism; 801, first clamping strip; 802, second clamping strip; 803, first spring; 804, second spring; 805, rotating member. DETAILED DESCRIPTION

[0031] The specific implementation of the utility model will be described below in combination with the drawings.

[0032] As shown in the drawings, Figures 1-4 A wrench with adjustable caliber comprises a gear wheel 4, an intermediate gear 5, a pinion 6, a meshing tooth 7 and a rotating mechanism 8.

[0033] The gear wheel 4 is annular, the inner side of the gear wheel 4 is an inner tooth 401, the outer side of the gear wheel 4 is a clamping groove 402, the intermediate gear 5 is arranged in the gear wheel 4, the gear wheel 4 and the intermediate gear 5 are coaxially arranged, and a plurality of pinions 6 are arranged on the inner side of the gear wheel 4 outside the intermediate gear 5, the pinions 6 are meshed with the inner tooth 401 of the intermediate gear 5 and the gear wheel 4. The gear wheel 4 is arranged on the partition plate 3, the outer side of the partition plate 3 is provided with the shell 2, and the rotating mechanism 8 is further arranged on the partition plate 3.

[0034] The rotating mechanism 8 includes a rotating member 805, a first clip 801, a second clip 802, a first spring 803, and a second spring 804. The rotating member 805 passes through the housing 2, with one end of the rotating member 805 disposed outside the housing 2 and the other end disposed inside the housing 2. The bottom of the rotating member 2 contacts the partition 3. The first clip 801 and the second clip 802 are disposed on either side of the rotating member 805. The end of the first clip 801 away from the large gear 4 is rotationally connected to the partition 3, while the end of the second clip 802 away from the large gear 4 is rotationally connected to the partition 3. The other ends of the first clip 801 and the other ends of the second clip 802 can be retained in the slot 402. A first spring 803 is disposed between the first clip 801 and the housing 2, with one end fixedly connected to the first clip 801. A second spring 804 is disposed between the second clip 802 and the housing 2, with one end fixedly connected to the second clip 802.

[0035] Under the elastic force of the first spring 803, one end of the first clip 801 will move toward the side of the large gear 4, and under the elastic force of the second spring 804, one end of the second clip 802 will move toward the side of the large gear 4. One end of the first clip 801 and one end of the second clip 802 are stuck in the slots 402 on both sides of the large gear 4, thereby restricting the large gear 4; the friction between the rotating part 805 and the shell 2 and the partition 3 is greater than the elastic force of the first spring 803 and the second spring 804. When the rotating part 805 is rotated, the rotating part 805 rotates toward the side of the first clip 801 or the side of the second clip 802, and the rotating part When 805 rotates toward the side of the first clip 801, the rotating member 805 drives the first clip 801 to move, so that one end of the first clip 801 leaves the slot 402 of the large gear 4. At this time, one end of the second clip 802 is in the slot 402 of the large gear 4 under the elastic force of the second spring 804, so that the large gear 4 can rotate toward the side of the second clip 802; the friction force between the rotating member 805 and the shell 2 and the partition 3 is greater than the elastic force of the first spring 803. Therefore, after releasing the rotating member 805, the rotating member 805 will not move under the elastic force of the first spring 803, that is, the rotating member 805 can achieve self-locking.

[0036] When the rotating member 805 rotates toward the second clamping strip 802, it drives the second clamping strip 802, causing one end of the second clamping strip 802 to leave the clamping slot 402 of the large gear 4. At this time, the end of the first clamping strip 801 is located in the clamping slot 402 of the large gear 4 under the elastic force of the first spring 803, allowing the large gear 4 to rotate toward the first clamping strip 801. The friction between the rotating member 805 and the housing 2 and the partition 3 is greater than the elastic force of the second spring 804. Therefore, after the rotating member 805 is released, the rotating member 805 will not move under the elastic force of the second spring 804, which means that the rotating member 805 can achieve self-locking.

[0037] The intermediate gear 5 is provided with an intermediate rotating shaft 501, the intermediate rotating shaft 501 is rotatably arranged on the partition plate 3, the intermediate rotating shaft 501 penetrates the shell 2, the intermediate rotating shaft 501 is provided with the handle 1 outside the shell 2, the handle 1 drives the intermediate rotating shaft 501 to rotate, and the intermediate rotating shaft 501 drives the intermediate gear 5 to rotate.

[0038] The pinion gear 6 is provided with a pinion gear rotating shaft 601, the pinion gear rotating shaft 601 penetrates the partition plate 3, the pinion gear rotating shaft 601 is provided with the teeth 7 below the partition plate 3, and the pinion gear rotating shaft 601 is connected with one end of the top of the teeth 7.

[0039] The pinion gear 6 and the teeth 7 can be provided with six, and the outer side of the teeth 7 is arc-shaped. The handle 1 can be modified into a sleeve or a ratchet.

[0040] In specific use, the rotating part 805 is pushed to one side, the handle 1 drives the intermediate rotating shaft 501 to rotate, the intermediate rotating shaft 501 drives the intermediate gear 5 to rotate, the intermediate gear 5 drives the pinion gear 6 to rotate, the pinion gear 6 drives the gear wheel 4 to rotate, the pinion gear 6 drives the teeth 7 to rotate along the pinion gear rotating shaft 601 through the pinion gear rotating shaft 601, the caliber composed of the plurality of teeth 7 is adjusted, after the caliber is adjusted to be appropriate, the rotating part 805 is pushed to the middle, the first clamping strip 801 and the second clamping strip 802 are respectively arranged in the clamping groove 402 of the gear wheel 4 under the elastic force of the first spring 803 and the second spring 804, the gear wheel 4 is fixed, and then the caliber composed of the plurality of teeth 7 is fixed, and then the bolt or the nut is operated.

[0041] The above description is an explanation of the utility model, not a limitation of the utility model, the range defined by the utility model is referred to the claims, and any form of modification can be made within the protection range of the utility model.

Claims

1. A wrench with adjustable caliber, characterized in that: include: The large gear (4) is annular, and the inner side of the large gear (4) is provided with internal teeth (401); An intermediate gear (5) is arranged inside the large gear (4), and the intermediate gear (5) and the large gear (4) are coaxially arranged; A plurality of small gears (6) are arranged between the large gear (4) and the intermediate gear (5) and mesh with the internal teeth (401) of the large gear (4) and the intermediate gear (5); A rotating mechanism (8) for controlling whether the large gear (4) is locked; A plurality of teeth (7), one side of the top of each tooth (7) being fixedly connected to the pinion (6) via a pinion rotating shaft (601); The intermediate gear (5) drives the meshing teeth (7) to rotate via the pinion (6), thereby adjusting the caliber of the meshing teeth (7).

2. The adjustable caliber wrench according to claim 1, characterized in that: The large gear (4) is arranged on the partition (3), and a housing (2) is arranged outside the partition (3).

3. The adjustable caliber wrench according to claim 2, characterized in that: The intermediate gear (5) is provided with an intermediate rotating shaft (501), the intermediate rotating shaft (501) is rotatably provided on the partition (3), the intermediate rotating shaft (501) passes through the outer shell (2), and a handle (1) is provided at one end of the intermediate rotating shaft (501).

4. The adjustable caliber wrench according to claim 3, characterized in that: A clamping groove (402) is provided on the outside of the large gear (4).

5. The adjustable caliber wrench according to claim 4, characterized in that: The rotating mechanism (8) comprises a first clamping strip (801) and a second clamping strip (802), the first clamping strip (801) and the second clamping strip (802) being respectively arranged on both sides of the large gear (4), the first clamping strip (801) having one end away from the large gear (4) being rotatably connected to the partition (3), the second clamping strip (802) having one end away from the large gear (4) being rotatably connected to the partition (3), and one end of the first clamping strip (801) and one end of the second clamping strip (802) being able to rotate into the clamping slot (402) of the large gear (4).

6. The adjustable caliber wrench according to claim 5, characterized in that: A first spring (803) is provided between the first clamping strip (801) and the housing (2), and a second spring (804) is provided between the second clamping strip (802) and the housing (2). The first clamping strip (801) rotates toward the large gear (4) due to the elastic force of the first spring (803), and the second clamping strip (802) rotates toward the large gear (4) due to the elastic force of the second spring (804).

7. The adjustable caliber wrench according to claim 6, characterized in that: A rotating member (805) is provided between the first clamping strip (801) and the second clamping strip (802), the rotating member (805) passes through the housing (2), the rotating member (805) contacts the partition (3), and the friction force between the rotating member (805), the partition (3) and the housing (2) is greater than the elastic force of the first spring (803) and the second spring (804).

Images