CN201394803Y - Switching type ratchet wrench - Google Patents

Abstract

The utility model provides a switching formula ratchet spanner, include a spanner body, a set of ratchet unit and a set of direction control unit, this ratchet unit has a drive head and a latch piece, direction control unit has one and dials the button, a top trigger piece and a locating pin, dial the button and utilize the steerable latch piece of top trigger piece to switch left and right sides position, this locating pin is inserted immediately and is inlayed in spanner body inner wall, form the location to dialling button periphery gomphosis, and can produce offside separation effect when dialling the button and drive top trigger piece and pass through the locating pin, borrow this and reach convenient to use's purpose.

Description

Switchable ratchet wrench

technical field

The utility model relates to a wrench tool, in particular to a switchable ratchet wrench with good use convenience.

Background technique

Referring to Fig. 1 and shown in Fig. 2, a general ratchet wrench 10 mainly has a wrench body 11, a ratchet drive head 12 with a shaft arranged at the head end of the wrench body 11, and a set of ratchet drive heads arranged inside the wrench body 11. 12 for engaging the catch block 13, and a direction control unit 14 pivotally arranged on the wrench body 11 to switch the position of the catch block 13. The front side of the catch block 13 is provided with a catch tooth that engages with the ratchet drive head 12 part 131, a recess 132 is provided at the rear side, and the direction control unit 14 includes a rotary dial 141, a spring 142 pierced inside the rotary dial 141, and a set of E-shaped push plates 143 arranged at the front end of the spring 142 , and an E-shaped fastener 144 embedded in the lower end of the rotary dial 141, the push plate 143 is bounced by the spring 142 and can be pushed into the rear side recess 132 of the locking block 13, and the rotary dial 141 can be moved through the push plate 143 The engaging block 13 is driven to move to the left or right to switch the engagement position between the engaging block 13 and the ratchet drive head 12 , thereby achieving the effect of controlling the rotation direction of the ratchet drive head 12 .

Although the above-mentioned ratchet wrench 10 can achieve the function of direction switching, it still has its defects in use. Generally, the rotary dial 141 of the ratchet wrench 10 is linked with the locking block 13 through the spring 142 and the push plate 143. The block 13 is resisted by the wall surface of the inner hole of the wrench body 11, which can define the limit position of the rotary knob 141 to turn left or right. However, when the locking block 13 passes through the middle point of the left and right switching, there is no obstacle Therefore, during use, the rotary dial 141 is easily touched by mistake and turns in the wrong direction, causing confusion to the operator.

Contents of the invention

The purpose of the utility model is to provide a switchable ratchet wrench with good usability.

To achieve the above purpose, the utility model provides a switchable ratchet wrench, which includes a wrench body, a ratchet unit and a direction control unit, wherein: the wrench body has a head end, and a first chamber is provided inside the head end. A second chamber is provided adjacent to one side of the first chamber, and a third chamber is provided adjacent to one side of the second chamber; the ratchet unit has a driving shaft arranged in the first chamber. head, and a locking block arranged in the second chamber adjacent to the driving head, a ring tooth is arranged on the outer periphery of the driving head, a ratchet portion is provided on the front side of the locking block, and a stopper is provided on the rear side The concave part and the locking block can move left and right in the second chamber, so that the ratchet part meshes with the ring teeth; the direction control unit has a dial with a shaft set in the third chamber, and a through-hole set inside the dial The top catch piece, and a positioning pin vertically inserted in the middle of the inner wall of the third chamber, one end of the top catch piece bounces into the stop recess of the catch block, so that the toggle button can drive the card through the top catch piece. The direction of the catch piece changes from left to right, and the other end of the push catch member springs to move along the inner wall of the third chamber. The positioning pin can be fitted to the outer periphery of the toggle button to form a position, and when the push catch member passes through the positioning pin, it can form an offside barrier.

The beneficial effect of the utility model is that: a positioning pin is vertically inserted in the middle of the inner wall of the third container, so that the toggle button forms an offside barrier when switching the left and right directions, so that the toggle button will not turn arbitrarily and has the effect of being convenient to use.

Description of drawings

Fig. 1 is an exploded perspective view of a general ratchet wrench;

Fig. 2 is a combined sectional view of a general ratchet wrench;

Fig. 3 is an exploded view of the first preferred embodiment of the switchable ratchet wrench of the present invention, illustrating that the present utility model includes a wrench body, a ratchet unit and a direction control unit;

Fig. 4 is the combined sectional view of above-mentioned preferred embodiment;

Fig. 5 is an action diagram of the above-mentioned preferred embodiment, illustrating the situation where the direction control unit is switched to the left;

Fig. 6 is an action diagram of the above-mentioned preferred embodiment, illustrating the situation where the direction control unit is switched to the right;

Fig. 7 is an exploded view of the second preferred embodiment of the present invention, illustrating that another direction control unit includes a spring with a bent portion;

8 is an exploded view of the third preferred embodiment of the present invention, illustrating that another direction control unit includes a spring, a first hollow pin and a second hollow pin.

Detailed ways

Regarding the aforementioned and other technical contents, features and effects of the present utility model, the following descriptions of several preferred embodiments with reference to the accompanying drawings will be clearly presented. Wrench for details.

Referring to Fig. 3, Fig. 4 and Fig. 5, in the first preferred embodiment, the switchable ratchet wrench of the present utility model mainly includes a wrench body 20, a ratchet unit 30 and a direction control unit 40, and then, the The detailed structure and combined space type of the above-mentioned units are described in detail later.

The wrench body 20 has a head end 21. A first chamber 211 in the shape of a circular seat hole is recessed inside the head end 21. A second chamber 212 is recessed adjacent to one side of the first chamber 211. Adjacent to one side of the second chamber 212 is a third chamber 213 in the shape of a cylindrical hole, and a pin hole 214 is further provided in the middle of the inner wall of the third chamber 213 .

The ratchet unit 30 has a drive head 31 that is axially arranged in the first chamber 211, a control rod 32 that passes through the center of the drive head 31, a set of springs 33 that are set on the control rod 32, and a set that is set on the control rod 32. The locking steel ball 34 inside the driving head 31, and a locking block 35 arranged in the second chamber 212 adjacent to the driving head 31, a ring tooth 311 is arranged on the outer periphery of the driving head 31, and a ring tooth 311 is arranged at the end thereof. There is a side bolt part 312, and the control rod 32 is affected by the elastic force of the spring 33, which can drive the latching steel ball 34 to protrude from the outer surface of the square bolt part 312. The latching block 35 is a slightly half-moon-shaped block. A ratchet portion 351 is provided at the center, and a resisting recess 352 is provided at the rear side. The locking block 35 can move left and right in the second chamber 212 so that the ratchet portion 351 meshes with the ring teeth 311 .

The direction control unit 40 has a toggle button 41 axially disposed in the third chamber 213 , a push member 42 penetrating through the interior of the toggle button 41 , and a positioning pin 43 vertically inserted into the pin hole 214 The toggle button 41 has a rotating shaft part 411 and a handle part 412 which is provided at one end of the rotating shaft part 411 and can be turned by the operator's hand. The outer periphery of the rotating shaft part 411 is provided with a perforation 413, and the rear outer peripheral wall is recessed. There is a groove 414 with a predetermined arc angle, and a notch 415 is recessed in the middle of the groove 414 for the insertion of the positioning pin 43. In this embodiment, the push member 42 includes a spring 421, a hollow pin 422 And a steel ball 423, the spring 421 is sleeved in the perforation 413 of the toggle button 41, the front end of which can bounce against the hollow pin 422 and push into the resisting recess 352 of the locking block 35, so that the toggle button 41 can pass through the push piece 42 Drive the locking block 35 to change the position in the left and right directions, and the rear end of the spring 421 can bounce against the steel ball 423 and move along the inner wall of the third chamber 213. The positioning pin 43 is a long round pin, and one end is provided with a stage. 431 , after the step portion 431 is inserted into the notch 415 of the dial 41 , it can just snap into the groove 414 to form a limit, so that the dial 41 can be quickly positioned in the third chamber 213 .

The above is an overview of the structures and shapes of the switchable ratchet wrench of the present invention, and then, the actions and expected effects of the present invention are stated as follows:

Referring again to Fig. 5, in a normal state, the toggle button 41 is linked with the locking block 32 through the top catch member 42. Since the positioning pin 43 protrudes from the inner peripheral wall of the third chamber 213, if the toggle button 41 is to be When switching the left and right positions, since the top catch 42 steel ball 423 moves along the inner wall of the third chamber 213, it will touch the positioning pin 43 and be blocked, so that the direction of the toggle button 41 will not be easily changed. When turning the dial button 41 to switch to another direction, turn the dial button 41 slightly, so that the steel ball 423 compresses the spring 421 and surpasses the positioning pin 43, so that the dial button 41 can achieve the effect of switching the direction position, as shown in the figure 6.

To sum up, the switchable ratchet wrench of the present utility model is mainly to improve the defects of the general ratchet wrench 10, and the technical means used is to insert and fix a positioning pin 43 in the middle of the inner wall of the third chamber 213 of the wrench body 20 , the positioning pin 43 protrudes from the inner peripheral wall of the third chamber 213, and when the toggle button 41 is switched left and right, the positioning pin 43 can produce a limiting and blocking effect on the toggle button 41, so that the toggle button 41 cannot change its direction arbitrarily. When the operator confirms that the direction is to be switched, a little force can be applied to the toggle button 41 to overcome the obstruction of the positioning pin 43, so that the reversing action of the present utility model is quite reliable and has good convenience in use. In addition, the positioning pin 43 is relatively The dial button 41 is made to fit, and the dial button 41 can be quickly positioned and installed in the third chamber 213, which has a very convenient assembly effect.

It is worth mentioning that there are other variants of the jacking member of the utility model in different embodiments, as shown in Fig. 7, in the second preferred embodiment of the utility model, the other direction control unit 50 has a dial Button 51, a push piece 52 and a positioning pin 53, different from the first embodiment, the push piece 52 is made up of a spring 521 and a hollow pin 522, the rear end of the spring 521 is provided with a curved The bent part 5211 can move along the inner wall of the third chamber 213 , and can produce a spring-top limit effect on the positioning pin 53 .

Referring to Fig. 8, in the third preferred embodiment of the present invention, another direction control unit 60 has a toggle button 61, a top catch member 62 and a positioning pin 63, different from the first embodiment, The top catch 62 is composed of a spring 621, a first hollow pin 622 set at the front end of the spring 621, and a second hollow pin 623 set at the rear end of the spring 621. The second hollow pin 623 It can move along the inner wall of the third accommodating chamber 213 , and can also produce the effect of spring top limit on the positioning pin 63 .

Claims (5)

1, a kind of suitching type ratchet spanner, have a wrench body and one group of ratchet unit, this wrench body has a head end, this head end inside is provided with one first room, be provided with one second room adjacent to first room, one side edge, be provided with one the 3rd room adjacent to second room, one side edge, this ratchet unit has an axle and is located at the interior driving head of first room, and one be arranged in second room with driving head mutually by neighbour's clipping block, this driving head periphery is provided with a row ring tooth, this place, clipping block front side is provided with the ratchet part that row are meshed with this ring tooth, clipping block rear side place is provided with one and supports only recess, it is characterized in that:

One prescription is to control module, has an axle and is located at toggle in the 3rd room, top that connects and flexibly be located in toggle inside upright the inserting of part and of pulling and is embedded in place in the middle of the 3rd room inwall top part of pulling is formed the alignment pin of offside obstruct.

2, suitching type ratchet spanner as claimed in claim 1 is characterized in that: this top part of pulling includes a spring, one and is set in spring front end place and heads into clipping block and support the hollow pins of ending in the recess and one and be set in the spring rear end place along supporting the steel ball that the 3rd room inwall moves.

3, suitching type ratchet spanner as claimed in claim 1, it is characterized in that: this top part of pulling includes a spring and one and is set in spring front end place and heads into clipping block and support the hollow pins of ending in the recess, and this spring rear end place is provided with an energy along supporting the kink that the 3rd room inwall moves.

4, suitching type ratchet spanner as claimed in claim 1 is characterized in that: this top part of pulling includes a spring, one and is set in spring front end place and heads into clipping block and support first hollow pins of ending in the recess and one and be set in spring rear end place and can be along supporting second hollow pins that the 3rd room inwall moves.

5, suitching type ratchet spanner as claimed in claim 1, it is characterized in that: this toggle periphery rear side place is concaved with a groove with predetermined arc angle, the place is concaved with a breach that supplies alignment pin to be inserted in the middle of being positioned at groove, and alignment pin is provided with an energy groove is formed chimeric spacing portion of class.

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