Folding structure of torque wrench

Abstract

The utility model discloses a folding structure of a torque wrench, which comprises a handle and a wrench arranged at the front end of the handle, a plurality of rotating grooves are arranged on the peripheral wall of the handle, the depth of the rotating grooves is deepened from front to back, and rotating rods are rotatably arranged on the rotating grooves; an inserting groove is formed in the rear end of the handle, a telescopic rod is arranged in the inserting groove in an inserted mode, a plurality of embedding grooves corresponding to the rotating rods are formed in the outer wall of the telescopic rod, and the depth of the embedding grooves is increased from front to back; a limiting block is arranged at the end of the telescopic rod, and a fixing lantern ring is arranged on the telescopic rod. Compared with the prior art, the torque wrench has the advantages that the rotating rod is pressed into the embedding groove in the telescopic rod, the fixed lantern ring and the sliding lantern ring are used for stably fixing the rotating rod, the service life of the torque wrench can be effectively prolonged, and therefore safety and reliability of the torque wrench are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of torque wrenches, in particular to a folding structure of a torque wrench. Background Art

[0002] A torque wrench, also known as a moment wrench or a torque-adjustable wrench, is a type of wrench. When the tightness of screws and bolts is crucial, a torque wrench allows an operator to apply a specific torque value.

[0003] For existing torque wrenches, in order to increase the tightening torque and reduce the burden on workers, a lengthening rod needs to be installed. However, the conventional torque wrench uses a spring-embedded fixing method. After a certain period of use, it is prone to the problem of loose connection between the lengthening rod and the handle, affecting the use safety. Content of the Utility Model

[0004] The purpose of the utility model is to provide a folding structure for a safe and reliable torque wrench.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: A folding structure of a torque wrench includes a handle and a wrench provided at the front end of the handle. Multiple rotating grooves are provided on the outer peripheral wall of the handle, and the depth of the rotating grooves deepens from front to back. Rotating rods are rotatably provided on the rotating grooves; A slot is provided at the rear end of the handle, and a telescopic rod is inserted into the slot. Multiple embedding grooves corresponding to the rotating rods are provided on the outer wall of the telescopic rod, and the depth of the embedding grooves deepens from front to back; A limiting block is provided at the end of the telescopic rod, and a fixing collar is provided on the telescopic rod.

[0006] It is further set as: Springs are provided on the telescopic rod that respectively abut against the limiting block and the fixing collar.

[0007] It is further set as: A sliding collar is provided on the handle.

[0008] It is further set as: Corresponding perforations for screws to penetrate are provided on the sliding collar and the handle.

[0009] In summary, the utility model has the following beneficial effects: By pressing the rotating rod into the embedding groove on the telescopic rod and using the fixing collar and the sliding collar to stably fix the rotating rod, the service life of the torque wrench can be effectively improved, thus ensuring its safety and reliability. Description of the Drawings

[0010] Figure 1 It is an overall schematic diagram of the folding mechanism of the torque wrench;

[0011] Figure 2 It is a cross-sectional schematic diagram of the position where the telescopic rod is located.

[0012] In the figure: 1. Handle; 2. Wrench; 3. Rotation groove; 4. Rotation rod; 5. Slot; 6. Telescopic rod; 7. Embedding groove; 8. Limit block; 9. Fixed collar; 10. Spring; 11. Sliding collar; 12. Perforation. Specific implementation mode

[0013] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0014] The folding structure of the torque wrench includes a handle 1 and a wrench 2 provided at the front end of the handle 1.

[0015] Eight rotation grooves 3 are provided on the outer peripheral wall of the handle 1, and strip-shaped rotation rods 4 are arranged in the rotation grooves 3. The rear end of the rotation rod 4 is hinged in the rotation groove 3. Among them, the rotation groove 3 extends backward beyond the rear end of the handle 1, so that the rotation rod 4 can be flipped and remain within the contour of the handle 1.

[0016] A slot 5 is provided at the rear end of the handle 1. The depth of the rotation groove 3 deepens from front to back. A telescopic rod 6 is arranged in the slot 5. The cross-section of the body of the telescopic rod 6 is circular, and 8 embedding grooves 7 are evenly arranged on the cross-section. The depth of the embedding grooves 7 also deepens from front to back. The embedding grooves 7 are for the flipped rotation rods 4 to be embedded. The structure of the slot 5 is adapted to that of the telescopic rod 6. When it is necessary to increase the torque, the telescopic rod 6 can be pulled out from the slot 5, and after the rotation rod 4 is flipped, it is pressed into the embedding groove 7. Since both the rotation groove 3 and the embedding groove 7 deepen in depth from front to back, the rotation rod 4 pressed into the embedding groove 7 is actually inclined.

[0017] A limit block 8 is arranged at the end of the telescopic rod 6, which can facilitate pulling out the telescopic rod 6. At the same time, a fixed collar 9 is arranged on the telescopic rod 6, and the fixed collar 9 can move on the telescopic rod 6. After the rotation rod 4 is pressed into the embedding groove 7, the fixed collar 9 can be sleeved outside the rotation rod 4, so as to achieve the purpose of fixing the rotation rod 4.

[0018] Among them, a spring 10 is arranged on the telescopic rod 6 between the limit block 8 and the fixed collar 9, which can facilitate sleeving the fixed collar 9 outside the rotation rod 4 after it is pressed into the embedding groove 7.

[0019] Similarly, a sliding collar 11 is arranged on the handle 1, and the sliding collar 11 is used to fix the original one.

[0020] Corresponding perforations 12 for screws to penetrate are arranged on the sliding collar 11 and the handle 1, so as to further fix the rotation rod 4. The perforations 12 are divided into two at the front end and the rear end of the handle 1.

[0021] The diameter of the fixed collar 9 is smaller than that of the sliding collar 11 to adapt to the gap caused by the inclination of the rotation rod 4.

[0022] This specific embodiment is only an interpretation of the present utility model, and it is not a limitation thereof. After reading this specification, those skilled in the art can make modifications to this embodiment that do not contribute creatively as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by the patent law.

Claims

1. A folding structure of a torque wrench, comprising a handle and a wrench arranged at the front end of the handle, characterized in that: A plurality of rotation grooves are arranged on the outer peripheral wall of the handle, the depth of the rotation grooves increases from front to back, and a rotation rod is rotatably arranged on each of the rotation grooves; a slot is arranged at the rear end of the handle, a telescopic rod is inserted in the slot, and a plurality of embedding grooves corresponding to the rotation rod are arranged on the outer wall of the telescopic rod, the depth of the embedding grooves increases from front to back; a limiting block is arranged at the end of the telescopic rod, and a fixing ring is arranged on the telescopic rod.

2. The folding structure of the torque wrench according to claim 1, characterized in that: The telescopic rod is provided with springs which respectively abut against the limit block and the fixing ring.

3. The folding structure of the torque wrench according to claim 1, characterized in that: A sliding collar is arranged on the handle.

4. The folding structure of the torque wrench according to claim 3, characterized in that: The sliding collar and the handle are provided with corresponding through holes for the screws to penetrate.

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