Impact wrench

Abstract

The utility model provides an impact wrench. The impact wrench comprises an F-shaped wrench and an impact assembly arranged on a handle of the F-shaped wrench. The impact assembly comprises a connecting part used for being connected with a handle of the F-shaped wrench, a guide rod arranged on the connecting part and a weight block arranged on the guide rod in a sliding mode, in the using state, the guide rod is perpendicular to the handle of the F-shaped wrench, and the weight block is used for moving in the direction of the guide rod and generating impact force through impact. And the F-shaped wrench is driven to rotate in the preset direction. According to the utility model, the F-shaped wrench is driven to rotate towards the preset direction by virtue of the impact force generated when the heavy block collides with the connecting part, so that the heavy block is not deviated and has the risk of accidental injury under the constraint of the guide rod, and meanwhile, the heavy block does not need to need a relatively large application space like hammering, and can be used in a scene with a limited maintenance space.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve wrench technical field, concretely relates to an impact wrench. BACKGROUND

[0002] The statements herein only provide the background of the utility model related, and do not necessarily constitute the prior art.

[0003] F wrench is mainly used for the switch of valve, in the case that valve appears little oil, rust, sealing surface is destroyed and so on valve difficult switch, in prior art, there are two kinds of ways, one is to adopt force lever, that is, adopts a sleeve to be covered on the handle of F wrench, makes the handle of F wrench lengthen, and then makes valve action (principle of lever), another is to adopt hammer to knock the handle of F wrench, makes valve action.

[0004] But, in the case that the maintenance space is limited, cannot use force lever, also does not have enough space to let the worker use hammer to accumulate force and knock, and, there will be some instruments and apparatus at part valve, hammering is easy to hurt these instruments and apparatus, and there is certain risk of hurting the worker. CONTENT OF UTILITY MODEL

[0005] The main purpose of the utility model is to provide an impact wrench capable of making difficult-to-switch valve action in the case that the maintenance space is limited.

[0006] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: an impact wrench, comprising an F-type wrench and an impact assembly arranged on the handle of the F-type wrench.

[0007] The impact assembly comprises a connecting portion for connecting with the handle of the F-type wrench, a guide rod arranged on the connecting portion and a weight block slidingly arranged on the guide rod, in use, the guide rod is perpendicular to the handle of the F-type wrench, the weight block is used to move along the direction of the guide rod and generate impact force through impact, and drive the F-type wrench to rotate to a predetermined direction.

[0008] Further, the end of the guide rod away from the connecting portion is detachably provided with an anti-dropping block.

[0009] Further, the connecting portion is a sleeve, which is sleeved on the handle of the F-type wrench, at least one first bolt is arranged on the connecting portion, the first bolt is threadedly connected with the sleeve, and the end of the first bolt passes through the sleeve and abuts against the handle of the F-type wrench, so as to limit the relative position of the sleeve and the F-type wrench.

[0010] Further, the cross section of the handle of the F-type wrench is non-circular.

[0011] Further, the weight block comprises a base block and at least one counterweight block, and the counterweight blocks are detachably connected with adjacent base blocks or counterweight blocks.

[0012] Further, one side of the base block corresponding to the counterweight block and the side of the counterweight block away from the base block are respectively provided with a plug connector, and the side of the counterweight block opposite to the plug connector is provided with a plug interface matched with the plug connector, the side of the plug connector is provided with an elastic ejector, and the inside of the plug interface is provided with a limiting groove corresponding to the elastic ejector, and the ejector in the plug interface is limitedly matched with the limiting groove.

[0013] The counterweight block is provided with an unlocking rod slidingly arranged thereon, and the unlocking rod is used to push the elastic ejector in the limiting groove out of the limiting groove.

[0014] Further, a first sliding groove is formed in the plug connector, the elastic ejector comprises a sliding block slidingly arranged in the first sliding groove, and a first elastic member is arranged between the sliding block and the first sliding groove, and the first elastic member is used to push one end of the sliding block out of the first sliding groove and into the limiting groove.

[0015] A second sliding groove is formed in the counterweight block, one end of the second sliding groove is communicated with the limiting groove, the other end penetrates through the side of the counterweight block, the unlocking rod is slidingly arranged in the second sliding groove, one end of the unlocking rod extends to the outside of the counterweight block, and the other end of the unlocking rod is abutted with the sliding block in the limiting groove and is used to push the sliding block out of the limiting groove.

[0016] Further, the impact assembly further comprises a third elastic member, and the third elastic member is used to accelerate the impact speed of the weight block.

[0017] Further, a striking block is arranged on the guide rod, the striking block is located between the weight block and the connecting portion, and is used to collide with the striking block; and the third elastic member is also located between the weight block and the connecting portion, one end of the third elastic member is connected with the connecting portion, and the other end of the third elastic member is connected with the weight block, and the third elastic member is used to accelerate the impact of the weight block on the striking block.

[0018] Further, a wedge-shaped block is arranged at a position of the guide rod away from the third elastic member, the wedge-shaped block is slidingly arranged in the guide rod, a fourth elastic member is arranged between the wedge-shaped block and the guide rod, and the fourth elastic member is used to push one end of the wedge-shaped block out of the guide rod, and is used to limit the weight block and prevent the weight block from moving towards the third elastic member.

[0019] Further, a reset member is arranged at a position of the guide rod corresponding to the third elastic member, the reset member comprises a reset rod penetrating through the guide rod and a push block connected with one end of the reset rod and extending out of the guide rod, the push block can drive the reset rod to move in the guide rod towards the wedge-shaped block, push the wedge-shaped block into the guide rod, and release the limiting of the wedge-shaped block on the weight block.

[0020] The guide rod is provided with a position displacement slot for the displacement of the displacement block.

[0021] The utility model discloses the beneficial effect reflects in:

[0022] The utility model discloses, with the help of the impact force of heavy block impact connection part, drive F type wrench rotates to the predetermined direction, this form, heavy block is under the restraint of guide rod, will not run off, will not have the risk of injury, and also need not like hammering and need larger space of performance, can use in the scene of limited repair space. BRIEF DESCRIPTION OF DRAWINGS

[0023] In the drawings:

[0024] Figure 1 It is the perspective view of one kind of structure of the impact wrench of the utility model;

[0025] Figure 2 It is the perspective view of another structure of the impact wrench of the utility model;

[0026] Figure 3 It is Figure 2 Front view;

[0027] Figure 4 It is the structure layout drawing of third elastic member in the utility model;

[0028] Figure 5 It is the structure layout drawing of wedge-shaped block in the utility model;

[0029] Figure 6 It is the half cutaway view of heavy block in the utility model.

[0030] BRIEF DESCRIPTION OF DRAWINGS:

[0031] 1, F type wrench, 2, connecting portion, 3, guide rod, 31, wedge-shaped block, 32, fourth elastic member, 33, reset rod, 34, displacement block, 35, position displacement slot, 4, heavy block, 41, base block, 42, counterweight block, 421, second sliding slot, 43, plug connector, 431, first sliding slot, 44, plug interface, 45, limit slot, 46, unlocking rod, 47, sliding block, 48, first elastic member, 49, second elastic member, 5, anti-drop block, 6, first bolt, 7, third elastic member, 8, impact block. DETAILED DESCRIPTION

[0032] The utility model will be further explained in detail below in combination with the drawings and embodiments, obviously, the described embodiments are only a part of the utility model's embodiments, rather than all the embodiments. In the case of no conflict, the embodiments in the application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of the utility model protection.

[0033] Referring to Figures 1 to 6 .

[0034] Embodiment one:

[0035] Referring to Figure 1 , the utility model discloses a shock wrench, including F type wrench 1 and setting on the handle of F type wrench 1 impact component,

[0036] The impact component includes the connecting portion 2 for being connected with the handle of F type wrench 1, the guide rod 3 being set on the connecting portion 2 and the weight block 4 being slidably arranged on the guide rod 3, under the use state, the guide rod 3 is perpendicular to the handle of F type wrench 1, the weight block 4 is used for moving along the direction of guide rod 3 and generates the impact force through the form of impact, and the F type wrench 1 is driven to rotate to the predetermined direction.

[0037] In the specific implementation, the weight block 4 can be sleeved on the guide rod 3 and above the F type wrench 1, the impact force generated by the weight block 4 free falling and impacting the connecting portion 2 drives the F type wrench 1 to rotate to the predetermined direction, or the worker holds the weight block 4, and the weight block 4 is pushed to impact the connecting portion 2, and the impact force generated when impacting is transmitted to the F type wrench 1 through the connecting portion 2, and the F type wrench 1 is driven to rotate to the predetermined direction. In this form, the weight block 4 is constrained under the guide rod 3, and there is no risk of misjudgment, and it is not necessary to need larger space like hammering, and it can be used in the scene with limited maintenance space.

[0038] Of course, in the above case, the weight block 4 can also be below the F type wrench 1, and then the anti-drop block 5 is detachably arranged at the end of the guide rod 3 away from the connecting portion 2, and the impact force is finally transmitted to the F type wrench 1 through the guide rod 3 by the impact of the guide rod 3 and the anti-drop block 5, and the F type wrench 1 is driven to rotate to the predetermined direction.

[0039] Referring to Figure 1 , 3 , 4, in an embodiment, the connecting portion 2 is a sleeve, which is detachably sleeved on the handle of F type wrench 1, at least one first bolt 6 is arranged on the connecting portion 2, the first bolt 6 is in threaded connection with the sleeve, and one end of the first bolt 6 passes through the sleeve and abuts against the handle of F type wrench 1, for limiting the relative position of the sleeve and F type wrench 1.

[0040] Referring to Figure 1 , 3 , 4, in an embodiment, the handle section of the F-type wrench 1 is non-circular (i.e. any shape other than circular), and the internal shape of the sleeve is the same as the shape of the handle section of the F-type wrench 1. With this design, the connection portion 2 can effectively avoid rotating relative to the F-type wrench 1.

[0041] Referring to Figure 2 , 3 , 6, in an embodiment, the weight block 4 includes a base block 41 and at least one counterweight block 42, and the counterweight block 42 is detachably connected to the adjacent base block 41 or counterweight block 42. With this design, by adding different numbers and specifications of counterweight blocks 42, the total mass of the weight block 4 can be adjusted, and in turn the impact force can be adjusted.

[0042] In a specific implementation, when the guide rod 3 is only one, and the weight block 4 can rotate relative to the guide rod 3, the counterweight block 42 and the adjacent base block 41 or counterweight block 42 can be connected together through threaded connection; when the guide rod 3 has multiple, the counterweight block 42 and the adjacent base block 41 or counterweight block 42 can be connected together through clamping.

[0043] It can be understood that, among the base block 41 and the counterweight block 42, only the base block 41 needs to be in sliding fit with the guide rod 3, and the counterweight block 42 can not have a connection relationship with the guide rod 3, of course, the counterweight block 42 can also be in sliding fit with the guide rod 3.

[0044] Referring to Figure 6 , in an embodiment, one side of the base block 41 corresponding to the counterweight block 42 and the side of the counterweight block 42 away from the base block 41 are respectively provided with a plug connector 43, the side of the plug connector 43 opposite to the counterweight block 42 is provided with a plug interface 44 matched with the plug connector 43, the side surface of the plug connector 43 is provided with an elastic ejector, and the inside of the plug interface 44 is provided with a limiting groove 45 corresponding to the elastic ejector, and the ejector in the plug interface 44 is in limiting fit with the limiting groove 45.

[0045] The counterweight block 42 is slidably provided with an unlocking rod 46, and the unlocking rod 46 is used to push the elastic ejector in the limiting groove 45 out of the limiting groove 45.

[0046] In the embodiment, when the counterweight 42 is used, the counterweight 42 is inserted into the adjacent base block 41 or counterweight 42 through the insertion head 43 and the insertion port 44, and then the elastic ejector is limited to the inserted insertion head 43 and insertion port 44 to prevent the insertion head 43 from exiting the insertion port 44. When the counterweight 42 needs to be removed, the elastic ejector in the limiting groove 45 is pushed out of the limiting groove 45 by the unlocking rod 46, the limiting of the insertion head 43 and the insertion port 44 is released, and the counterweight 42 is removed.

[0047] Referring to Figure 6 In an embodiment, the insertion head 43 is provided with a first sliding groove 431, and the elastic ejector includes a sliding block 47 slidingly arranged in the first sliding groove 431, and a first elastic member 48 arranged between the sliding block 47 and the first sliding groove 431, the first elastic member 48 being used to push one end of the sliding block 47 out of the first sliding groove 431 and into the limiting groove 45.

[0048] The counterweight 42 is provided with a second sliding groove 421, one end of the second sliding groove 421 being communicated with the limiting groove 45 and the other end penetrating through the side of the counterweight 42, and the unlocking rod 46 is slidingly arranged in the second sliding groove 421, one end of the unlocking rod 46 extending out of the counterweight 42 and the other end abutting against the sliding block 47 in the limiting groove 45, and being used to push the sliding block 47 out of the limiting groove 45.

[0049] Preferably, a second elastic member 49 is arranged between the second sliding groove 421 and the unlocking rod 46, and the second elastic member 49 is used to push the sliding block 47 to move outward of the counterweight 42.

[0050] Preferably, the first elastic member 48 and the second elastic member 49 are springs.

[0051] Embodiment two:

[0052] Referring to Figures 2 to 4 The difference between the embodiment and the embodiment one is that:

[0053] The impact assembly further includes a third elastic member 7, and the third elastic member 7 is used to accelerate the impact speed of the weight block 4. In this way, when the maintenance space is further reduced and the weight block 4 is inconvenient to impact by hand, the spring is used to accelerate the weight block 4, so that the weight block 4 can generate sufficient impact force.

[0054] Referring to Figures 2 to 4In an embodiment, the guide rod 3 is provided with an impact block 8 between the weight block 4 and the connecting part 2, which is used to collide with the impact block 8; the third elastic member 7 is also between the weight block 4 and the connecting part 2, one end of the third elastic member 7 is connected with the connecting part 2, and the other end is connected with the weight block 4, which is used to accelerate the weight block 4 to collide with the impact block 8. In this way, the impact force generated by the collision can be improved, and the F-shaped wrench 1 can be better driven to rotate in the predetermined direction.

[0055] Specifically, the third elastic member 7 is a spring, one end of the spring is connected with the connecting part 2, and the other end is connected with the base block 41 in the weight block 4. By arranging the spring between the weight block 4 and the connecting part 2, the addition of the counterweight block 42 will not be hindered.

[0056] Preferably, the guide rod 3 is provided with two, the base block 41 and the counterweight block 42 are slidingly arranged on the two guide rods 3, and the third elastic member 7 is located between the two guide rods 3.

[0057] Referring to Figure 5 In an embodiment, the guide rod 3 is provided with a wedge block 31 at a position away from the third elastic member 7, the wedge block 31 is slidingly arranged in the guide rod 3, and the fourth elastic member 32 is arranged between the wedge block 31 and the guide rod 3, which is used to push one end of the wedge block 31 to extend out of the guide rod 3, so as to limit the weight block 4 and prevent the weight block 4 from moving towards the third elastic member 7;

[0058] Further comprising a reset part arranged at a position corresponding to the third elastic member 7 of the guide rod 3, the reset part comprises a reset rod 33 penetrating in the guide rod 3 and a push block 34 connected with one end of the reset rod 33 and extending out of the guide rod 3, the push block 34 can drive the reset rod 33 to move in the guide rod 3 towards the wedge block 31, push the wedge block 31 into the guide rod 3, and release the limitation of the wedge block 31 on the weight block 4;

[0059] The guide rod 3 is provided with a gap slot 35 corresponding to the position of the push block 34, which is used for the movement of the push block 34.

[0060] In the embodiment, the plurality of guide rods 3 are provided with the wedge-shaped block 31, and the wedge-shaped block 31 can be provided on the plurality of guide rods 3; the guide rod 3 provided with the wedge-shaped block 31 is hollow, the wedge-shaped block 31 is arranged in the guide rod 3, the guide rod 3 is provided with a hole for the wedge-shaped block 31 to extend out, one end of the wedge-shaped block 31 extends out of the guide rod 3, and the side of the wedge-shaped block 31 facing the third elastic member 7 is a slope, and the side of the wedge-shaped block 31 away from the third elastic member 7 is a plane, so that when the worker pushes the weight block 4 to move away from the third elastic member 7, the wedge-shaped block 31 is pressed, and the wedge-shaped block 31 automatically enters the guide rod 3; when the weight block 4 passes the wedge-shaped block 31, the wedge-shaped block 31 is pushed out under the action of the fourth elastic member 32, the weight block 4 is limited, and the movement of the weight block 4 to the third elastic member 7 is prevented.

[0061] When the impact force needs to be generated, the pulling block 34 is pulled, the pulling block 34 drives the reset rod 33 to move in the guide rod 3 to the direction of the wedge-shaped block 31, the wedge-shaped block 31 is pushed to enter the guide rod 3, the limiting of the wedge-shaped block 31 to the weight block 4 is released, the weight block 4 is accelerated to impact under the action of the gravity and the third elastic member 7, and the impact force drives the F-shaped wrench 1 to rotate to the predetermined direction.

[0062] The fourth elastic member 32 is a spring.

[0063] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

[0064] It should be noted that if the utility model embodiments involve directional indications (such as up and down), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0065] In addition, if the utility model embodiments involve the description of "first", "second", etc., the description of "first", "second", etc. is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "multiple" means two or more. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary technical personnel, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the utility model.

Claims

1. An impact wrench characterized by, The utility model provides a F type wrench (1) and the impact assembly of setting on the handle of F type wrench (1); The impact assembly includes a connecting part (2) for connecting with the handle of the F type wrench (1), a guide rod (3) arranged on the connecting part (2), and a weight block (4) slidingly arranged on the guide rod (3). In use, the guide rod (3) is perpendicular to the handle of the F type wrench (1), and the weight block (4) is used to move along the direction of the guide rod (3) and generate impact force through impact to drive the F type wrench (1) to rotate to a predetermined direction.

2. The impact wrench of claim 1, wherein, The end of the guide rod (3) away from the connecting part (2) is detachably provided with an anti-dropping block (5).

3. The impact wrench of claim 1 or 2, wherein, The connecting part (2) is a sleeve arranged on the handle of the F type wrench (1), and at least one first bolt (6) is arranged through the sleeve. The first bolt (6) is threadedly connected with the sleeve, and one end of the first bolt (6) is in abutment with the handle of the F type wrench (1) through the sleeve, so as to limit the relative position of the sleeve and the F type wrench (1).

4. The impact wrench of claim 3, wherein, The cross section of the handle of the F type wrench (1) is non-circular.

5. The impact wrench of claim 1 or 2, wherein, The weight block (4) includes a base block (41) and at least one counterweight block (42), and the counterweight blocks (42) are detachably connected with adjacent base blocks (41) or counterweight blocks (42).

6. The impact wrench of claim 5, wherein, The side of the base block (41) corresponding to the counterweight block (42) and the side of the counterweight block (42) away from the base block (41) are respectively provided with a plug connector (43), and the side of the counterweight block (42) opposite to the plug connector (43) is provided with a plug interface (44) matched with the plug connector (43). The side of the plug connector (43) is provided with an elastic ejector, and the inside of the plug interface (44) is provided with a limiting groove (45) corresponding to the elastic ejector. The ejector in the plug interface (44) is limitedly matched with the limiting groove (45). The counterweight block (42) is slidingly provided with an unlocking rod (46), and the unlocking rod (46) is used to push the elastic ejector in the limiting groove (45) out of the limiting groove (45).

7. The impact wrench of claim 6, wherein, The plug connector (43) is provided with a first sliding groove (431), and the elastic ejector includes a sliding block (47) slidingly arranged in the first sliding groove (431). A first elastic member (48) is arranged between the sliding block (47) and the first sliding groove (431), and the first elastic member (48) is used to push one end of the sliding block (47) out of the first sliding groove (431) and into the limiting groove (45). The counterweight block (42) is provided with a second sliding groove (421), one end of the second sliding groove (421) is communicated with the limiting groove (45), and the other end penetrates the side of the counterweight block (42). The unlocking rod (46) is slidingly arranged in the second sliding groove (421), one end of the unlocking rod (46) extends to the outside of the counterweight block (42), and the other end is in abutment with the sliding block (47) in the limiting groove (45) to push the sliding block (47) out of the limiting groove (45).

8. The impact wrench of claim 5, wherein, The impact assembly further includes a third elastic member (7) used to accelerate the impact speed of the weight block (4).

9. The impact wrench of claim 8, wherein, The guide rod (3) is provided with an impact block (8) between the weight block (4) and the connecting part (2), which is used to collide with the impact block (8); the third elastic member (7) is also located between the weight block (4) and the connecting part (2), one end of the third elastic member (7) is connected with the connecting part (2), and the other end is connected with the weight block (4), which is used to accelerate the weight block (4) to collide with the impact block (8).

10. The impact wrench of claim 8, wherein, The guide rod (3) is provided with a wedge block (31) away from the third elastic member (7), the wedge block (31) is slidingly arranged in the guide rod (3), a fourth elastic member (32) is arranged between the wedge block (31) and the guide rod (3), the fourth elastic member (32) is used to push one end of the wedge block (31) to extend out of the guide rod (3), which is used to limit the weight block (4) and prevent the weight block (4) from moving towards the third elastic member (7); Further comprising a reset component arranged at the position of the corresponding third elastic member (7) of the guide rod (3), the reset component comprises a reset rod (33) penetrating in the guide rod (3) and a push block (34) connected with one end of the reset rod (33) and extending out of the guide rod (3), the push block (34) can drive the reset rod (33) to move in the guide rod (3) towards the wedge block (31), push the wedge block (31) into the guide rod (3) and release the limitation of the wedge block (31) on the weight block (4); The guide rod (3) is provided with a let go slot (35) corresponding to the position of the push block (34) for the movement of the push block (34).

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