Patent Application
20190015964
The present invention relates to a wrench, and more particularly, to an angle adjustable wrench whose jaws are angularly adjustable.
The conventional wrench generally includes a handle and a wrench portion is connected to one end of the handle. The wrench portion is partially integrally formed with the handle, in other words, the object to be accessed by the wrench portion has to be located on the axial direction of the handle or the wrench portion cannot access the object. In some situations, the room is narrow which is not allowed the handle together with the wrench portion to be operated within the room. The conventional wrench becomes useless.
The present invention intends to provide an angle adjustable wrench whose jaws are angularly adjustable relative to the handle so as to eliminate the shortcomings mentioned above.
The present invention relates to an angle adjustable wrench and comprises a handle having a head which is a ring-shaped head and formed on one end thereof. The head has inner teeth defined in the inner periphery thereof. A main part has a slot defined in one side thereof, and the slot is located between two plates. The head is inserted into the slot. The main part has a through hole defined through the two plates and the through hole communicates with the inner teeth of the head. The through hole has an inner anti-rotation portion defined in the inner periphery of each of the two plates. A passage is defined laterally through the main part. An aperture is defined in the main part and communicates with the passage. A positioning member extends through the main part.
An adjustment unit is connected to the main part and comprises a sleeve, two pawls, a resilient member and a button. The sleeve has an axial hole defined axially therethrough. The button has a first neck and a second neck. The sleeve has an outer anti-rotation portion defined in outside of upper portion and lower portion thereof. Two rooms are respectively defined in two opposite portions of the sleeve and the two pawls are respectively located in the two rooms. The sleeve is inserted in the through hole of the main part. The two inner anti-rotation portions are engaged with the two outer anti-rotation portions. The resilient member and the button are received in the axial hole of the sleeve. The resilient member biases the button so that the first neck pushes the two pawls to be engaged with the inner teeth in the head.
A jaw unit has a movable jaw, a rotary wheel and a fixed jaw. The movable jaw has a shaft extending therefrom which has outer teeth. The rotary wheel is threadedly connected to the outer teeth. The fixed jaw is integrally formed with the shaft. The movable jaw is located corresponding to the fixed jaw. The fixed jaw has a pivotal portion. The rotary wheel extends through the aperture of the main part. A positioning member extends through the main part and the pivotal portion which is inserted into the main part.
Preferably, a resilient unit is received in the main part and includes a resilient part having a resilient tongue, and a spring. The passage of the main part includes a recess and a side hole. The resilient part is inserted into the passage. The resilient tongue is located in the recess, and the spring is located in the side hole. The spring has one end thereof biasing the resilient part.
Preferably, the resilient part is a U-shaped part.
Preferably, the positioning member is a pin, and the pivotal portion includes a hole through which the pin extends.
Preferably, the outer anti-rotation portions of the sleeve each are outer polygonal sides, and the inner anti-rotation portions of the main part each are inner polygonal sides.
Preferably, the resilient member is a spring.
Preferably, the outer diameter of the first neck is larger than the outer diameter of the second neck.
Preferably, the movable jaw is perpendicularly connected to the shaft.
Preferably, a positioning ring is connected to the main part and surrounds the through hole.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
Referring to
An adjustment unit 40 is connected to the main part 20 and comprises a sleeve 41, two pawls 42, a resilient member 43 and a button 44. The sleeve 41 has an axial hole 411 defined axially therethrough. The button 44 has a first neck 441 and a second neck 442, wherein the outer diameter of the first neck 441 is larger than the outer diameter of the second neck 442. The sleeve 41 has an outer anti-rotation portion 412 defined in outside of the upper portion and the lower portion thereof, so that when the sleeve 41 inserted in the through hole 22 of the main part 20, the two inner anti-rotation portions 23 are engaged with the two outer anti-rotation portions 412. In this embodiment, the outer anti-rotation portions 412 of the sleeve 41 each are outer polygonal sides, and the inner anti-rotation portions 23 of the main part 20 each are inner polygonal sides. Two rooms 413 are respectively defined in two opposite portions of the sleeve 41 and the two pawls 42 are respectively located in the two rooms 413. The resilient member 43 and the button 44 are received in the axial hole 411 of the sleeve 41. In this embodiment, the resilient member 43 is a spring. The resilient member 43 biases the button 44 so that the first neck 441 pushes the two pawls 42 to be engaged with the inner teeth 12 in the head 11.
A jaw unit 50 comprises a movable jaw 51, a rotary wheel 52 and a fixed jaw 53. The movable jaw 51 has a shaft 511 extending therefrom which has outer teeth 512. The movable jaw 51 is perpendicularly connected to the shaft 511. The rotary wheel 52 is threadedly connected to the outer teeth 512. The fixed jaw 53 is integrally formed with the shaft 511. The movable jaw 52 is located corresponding to the fixed jaw 53. The fixed jaw 53 has a pivotal portion 531 which has a hole. The rotary wheel 52 extends through the aperture 25 of the main part 20 so that the user may rotate the rotary wheel 52 to move the shaft 511 to adjust the distance between the fixed jaw 53 and the movable jaw 51. A positioning member 30, such as a pin, extends through the main part 20 and the hole of the pivotal portion 531 which is inserted into the main part 20 to connect the fixed jaw 51 to the main part 20.
A resilient unit 60 is received in the main part 20 and includes a resilient part 61 having a resilient tongue 611, and a spring 62. The passage 24 of the main part 20 includes a recess 241 and a side hole 242, wherein the resilient part 61 is inserted into the passage 24, and the resilient tongue 611 is located in the recess 241. The spring 62 is located in the side hole 242 and has one end thereof biasing the resilient part 61. In this embodiment, the resilient part 61 is a U-shaped part. A positioning ring 70 is connected to the main part 20 and surrounds the through hole 22.
Referring to
While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
