Wrench device for eliminating gap

Abstract

The invention relates to a wrench device for eliminating a gap, and belongs to the field of fastener assembly. Comprising a telescopic mechanism, a limiting mechanism, a base and a gear sleeve ring, the axial direction of the gear sleeve ring is perpendicular to the axial direction of the telescopic mechanism, a sleeve hole is formed in the gear sleeve ring in the axial direction of the gear sleeve ring, one end of the telescopic mechanism is rotatably installed at one end of the base, and the other end of the telescopic mechanism is arranged in the gear sleeve ring. One end of the limiting mechanism is rotatably installed on the base, the other end of the limiting mechanism is meshed with or separated from the gear lantern ring, the telescopic mechanism movably penetrates through the limiting mechanism and the gear lantern ring, and the gear lantern ring is rotatably installed at the other end of the base. The clearance between the gear lantern ring and the to-be-tightened bolt cap can be eliminated, and then the bolt cap can swing and be tightened in a small-amplitude mode in a small-swing space.

Description

Technical Field

[0001] The invention relates to the field of fastener assembly, and in particular to a wrench device for eliminating gaps. Background Art

[0002] Bolts are fasteners used to connect components, often requiring a fixed or adjustable wrench for tightening or loosening. Due to their widespread use, wrenches and bolts are often used in a variety of situations, such as when there are interference structures on both sides of the bolt, leaving the wrench with only a small amount of room to maneuver.

[0003] In this usage scenario, if a fixed wrench is used to tighten the bolt, since the inner diameter of the fixed wrench often needs to be slightly larger than the bolt cap in order to fit the bolt cap, there will be a certain gap between the fixed wrench and the bolt cap after it is put on the bolt cap. In a small swing space, this gap will make the fixed wrench ineffective, that is, the fixed wrench cannot tighten the bolt in a small swing space; if an adjustable wrench is used to tighten the bolt, since the adjustable wrench can bite the bolt cap by adjusting the adjustable wrench mouth, thereby avoiding the generation of gap clearance, the bolt can be tightened in a small swing space, but when adjusting the adjustable wrench mouth, the user's hand still needs to enter the small swing space with interference structures on both sides. Obviously, it is extremely inconvenient to adjust the adjustable wrench mouth in a small swing space, or even impossible to adjust the adjustable wrench mouth. Therefore, the adjustable wrench is also not convenient for tightening the bolt in a small swing space. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a wrench device for eliminating gaps, so as to facilitate tightening bolts in a small swing space.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A wrench device for eliminating gaps comprises: a telescopic mechanism, a limiting mechanism, a base and a gear collar, the axial direction of the gear collar is perpendicular to the axial direction of the telescopic mechanism, the gear collar is provided with a sleeve hole along its axial direction, one end of the telescopic mechanism is rotatably mounted on one end of the base, and the other end thereof is arranged in the gear collar, one end of the limiting mechanism is rotatably mounted on the base, and the other end thereof is engaged with or disengaged from the gear collar, the telescopic mechanism slides through the limiting mechanism and the gear collar, and the gear collar is rotatably mounted on the other end of the base.

[0006] The beneficial effects of the present invention are as follows: compared with the technical solutions of the prior art that use a fixed wrench or an adjustable wrench to tighten a bolt in a small swing space, the present invention facilitates adjusting the rotation angle of the gear collar to the same orientation as the bolt nut to be tightened outside the small swing space by rotatably mounting the gear collar on the other end of the base, and then placing the gear collar in the small swing space to sleeve the hole on the bolt nut to be tightened; one end of the telescopic mechanism facilitates extending or retracting the other end arranged in the gear collar by rotating to clamp the bolt nut to be tightened which is sleeved in the gear collar, eliminating the gap between the gear collar and the bolt nut to be tightened, and thus enabling the bolt nut to be tightened by a small rotation in the small swing space; one end of the limiting mechanism facilitates extending or retracting the other end by rotating to engage or disengage with the gear collar, thereby limiting the gear collar when meshing with the gear collar, and preventing the gear collar and the base from rotating relative to each other when the wrench device is rotated to tighten the bolt nut.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the telescopic mechanism includes: a first nut, a push rod, a push block and a sliding member, the first nut is rotatably mounted above one end of the base, the first nut is threadedly sleeved on the push rod, one end of the sliding member is fixedly connected to the end of the push rod, and the other end is slidably connected to the push block along the circumferential direction of the gear ring, the push rod slides through the limiting mechanism and the gear ring, and the push block is arranged in the gear ring.

[0009] The beneficial effect of adopting the above-mentioned further scheme is that the first nut thread sleeve is arranged on the push rod, which is conducive to driving the push rod, the sliding member and the push block to extend through the rotation of the first nut, so that the push block extends in the gear collar and abuts against the bolt nut to be tightened, eliminating the gap between the bolt nut to be tightened and the gear collar, thereby enabling the wrench device to tighten the bolt nut in a small swing space.

[0010] Furthermore, the push block is a broken line plate structure, and two sliding limit blocks are fixedly provided on the side wall of the push block with an upper and lower interval. The two sliding limit blocks are provided with sliding grooves on the opposite sides, and the sliding grooves are arc-shaped grooves. The other end of the sliding member is provided between the two sliding limit blocks and is slidably connected to the two sliding grooves.

[0011] The beneficial effect of adopting the above-mentioned further scheme is that the other end of the sliding member is slidably connected to the two sliding grooves, which is conducive to preventing the push block from interfering with the push rod and the sliding member during the rotation of the gear ring. The push block is a broken line plate structure, which is conducive to adapting to the shape of the bolt cap to be tightened, making it easier for the push block to abut against the bolt cap to be tightened.

[0012] Furthermore, the sliding member includes a connecting rod and a sliding rod, one end of the connecting rod is fixedly connected to the end of the push rod, the sliding rod vertically passes through the other end of the connecting rod, and the two ends of the sliding rod are slidably installed in the two sliding grooves in a one-to-one correspondence.

[0013] The beneficial effect of adopting the above further solution is that the sliding rod passes vertically through the other end of the connecting rod, which is conducive to setting the sliding rod in an upward and downward direction, thereby achieving a sliding and fitting connection with two sliding grooves arranged opposite to each other.

[0014] Furthermore, two first limit seats are fixedly provided above one end of the base, the first nut is rotatably arranged between the two first limit seats, and the push rod slides through the two first limit seats.

[0015] The beneficial effect of adopting the above-mentioned further scheme is that the push rod slides through the two first limit seats, and at the same time the first nut thread sleeve is arranged on the push rod, which is conducive to avoiding the first limit seat from interfering with the displacement of the push rod during the axial displacement of the push rod along the first nut under the rotation action of the first nut.

[0016] Furthermore, the limiting mechanism includes: a second nut, a push cylinder, a swinging gear block and a spring, the second nut is threadedly connected to the base, one end of the push cylinder abuts or separates from one end of the second nut, and the other end is fixedly connected to one side of the swinging gear block, the swinging gear block is an arc structure with a first meshing tooth arranged in the circumference of the other side, the other side of the swinging gear block meshes or separates with the outer wall of the gear ring, the spring is sleeved on the push cylinder, and its two ends are fixedly connected to the third limit seat fixed on the base and one side of the swinging gear block in a one-to-one correspondence, the push cylinder slides through the third limit seat, and the push rod slides through the second nut, the push cylinder and the swinging gear block.

[0017] The beneficial effects of adopting the above-mentioned further scheme are: the second nut is conducive to driving the push cylinder and the swinging tooth block to extend or retract, thereby engaging or disengaging with the gear collar, and then limiting the gear collar when engaging with the gear collar, avoiding relative rotation of the gear collar and the base when tightening the bolt cap; the spring is conducive to using the rebound force to apply pre-pressure to the swinging tooth block when one end of the push cylinder is separated from one end of the second nut, driving the swinging tooth block to maintain engagement with the outer wall of the gear collar; the push rod slides through the second nut, the push cylinder and the swinging tooth block, which is conducive to preventing the actions of the telescopic mechanism and the limiting mechanism from interfering with each other, while also reducing the volume of the entire wrench device and increasing the convenience of using the wrench device.

[0018] Furthermore, a second limiting seat is fixedly provided on the base, the second limiting seat and the third limiting seat are spaced apart, and the second limiting seat is threadedly sleeved on the second nut.

[0019] The beneficial effect of adopting the above further solution is that the second limit seat is threadedly sleeved on the second nut, which is conducive to driving the push cylinder to move to the right through the rotation of the second nut, thereby making the engagement between the swing gear block and the gear ring tighter.

[0020] Furthermore, the gear ring includes two gears and a rotating cylinder. The two gears are spaced apart and fixedly mounted on the rotating cylinder. The rotating cylinder is rotatably mounted above the other end of the base. The limiting mechanism engages or disengages with the outer wall of the gear. The push rod slides through the rotating cylinder, and the push block is arranged in the gear.

[0021] The beneficial effect of adopting the above-mentioned further scheme is that the rotating cylinder is rotatably installed above the other end of the base, which is conducive to the driving gear rotating above the other end of the base to match the orientation of the bolt nut to be tightened, thereby facilitating the wrench device to be placed in a small swing space and sleeved on the bolt nut to be tightened; the push rod slides through the rotating cylinder, which is conducive to setting the push block in the gear, thereby driving the push block to abut against the bolt nut to be tightened, thereby eliminating the gap between the bolt nut to be tightened and the gear.

[0022] Furthermore, a push block limiting groove is provided on the inner wall of the sleeve hole, and the push block is adapted to be arranged in the push block limiting groove. The push block and the sleeve hole are arranged to form a polygon whose inner wall is adapted to the outer wall of the bolt cap to be tightened.

[0023] The beneficial effect of adopting the above-mentioned further scheme is that the push block limit groove is conducive to providing space for the installation of the push block, and the push block and the sleeve hole are arranged to form a polygon whose inner wall is adapted to the outer wall of the bolt cap to be tightened, which is conducive to avoiding relative displacement between the push block and the bolt cap to be tightened when the push block abuts against the outer wall of the bolt cap to be tightened, thereby affecting the tightening effect.

[0024] Furthermore, a push rod through hole is provided on the circumference of the side wall of the rotating cylinder. The push rod through hole is an arc-shaped through hole connected to the sleeve hole, and the push rod slides through the push rod through hole.

[0025] The beneficial effect of adopting the above further solution is that the push rod through hole is an arc-shaped through hole connected to the sleeve hole, which is beneficial to avoid interference between the push block, the push rod and the sliding member during the process of the push block rotating with the gear ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 An axonometric diagram of the overall structure provided by an embodiment of the present invention; Figure 2 A front view of the overall structure provided by an embodiment of the present invention; Figure 3 A top view of the overall structure provided by an embodiment of the present invention; Figure 4 A top view of a gear collar provided in an embodiment of the present invention; Figure 5 Schematic diagram of the structure of the gear ring provided in an embodiment of the present invention Figure 1 ; Figure 6 Schematic diagram of the structure of the gear ring provided in an embodiment of the present invention Figure 2 ; Figure 7 A schematic diagram of the connection structure of the push rod, push block and sliding member provided in an embodiment of the present invention; Figure 8 A schematic structural diagram of a sliding member provided in an embodiment of the present invention being slidably installed in a sliding groove; Figure 9 A schematic diagram of a conventional fixed wrench provided by an embodiment of the present invention being mounted on a bolt cap in a small swing space; Figure 10 This is a schematic diagram of the connection between the second nut and the push cylinder provided in an embodiment of the present invention.

[0027] in, Figure 1 The double-headed arrows in the figure indicate the installation positions of the components.

[0028] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Telescopic mechanism; 2. Limiting mechanism; 3. Base; 4. Gear collar; 5. Bolt cap to be tightened; 11. First nut; 12. Push rod; 13. Push block; 14. Sliding member; 21. Second nut; 22. Push cylinder; 23. Swinging gear block; 24. Spring; 31. First limiting seat; 32. Second limiting seat; 33. Third limiting seat; 41. Gear; 42. Rotating cylinder; 43. Hole; 44. Push block limiting groove; 45. Push rod through hole; 131. Sliding limiting block; 132. Sliding groove; 141. Connecting rod; 142. Sliding rod; 211. Nut; 212. Connecting rod. DETAILED DESCRIPTION

[0029] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0030] like Figures 1 to 10As shown, this embodiment provides a wrench device for eliminating gaps, including: a telescopic mechanism 1, a limiting mechanism 2, a base 3 and a gear ring 4, the axial direction of the gear ring 4 is perpendicular to the axial direction of the telescopic mechanism 1, and the gear ring 4 is provided with a sleeve hole 43 along its axial direction, one end of the telescopic mechanism 1 is rotatably mounted on one end of the base 3, and the other end thereof is arranged in the gear ring 4, one end of the limiting mechanism 2 is rotatably mounted on the base 3, and the other end thereof is engaged with or disengaged from the gear ring 4, the telescopic mechanism 1 slides through the limiting mechanism 2 and the gear ring 4, and the gear ring 4 is rotatably mounted on the other end of the base 3.

[0031] Among them, it should be noted that the small swing space refers to the space in which the wrench can drive the bolt to rotate, such as Figure 9 As shown, there are interference structures on both sides of the bolt cap 5 to be tightened (i.e. Figure 9 (a) two symmetrically arranged rectangles in the figure, after the tightening bolt cap 5 is put on by the wrench, the wrench can only rotate in the small space between the two interference structures, and the range of rotation is limited to the range of rotation that can be generated when the two side walls of the wrench respectively abut against the side walls of the two interference structures facing each other.

[0032] The beneficial effects of the present invention are as follows: compared with the technical solutions of the prior art that use a fixed wrench or an adjustable wrench to tighten a bolt in a small swing space, the present invention facilitates adjusting the rotation angle of the gear collar to the same orientation as the bolt nut to be tightened outside the small swing space by rotatably mounting the gear collar on the other end of the base, and then placing the gear collar in the small swing space to sleeve the hole on the bolt nut to be tightened; one end of the telescopic mechanism facilitates extending or retracting the other end arranged in the gear collar by rotating to clamp the bolt nut to be tightened which is sleeved in the gear collar, eliminating the gap between the gear collar and the bolt nut to be tightened, and thus enabling the bolt nut to be tightened by a small rotation in the small swing space; one end of the limiting mechanism facilitates extending or retracting the other end by rotating to engage or disengage with the gear collar, thereby limiting the gear collar when meshing with the gear collar, and preventing the gear collar and the base from rotating relative to each other when the wrench device is rotated to tighten the bolt nut.

[0033] Preferably, Figure 1-3 、 Figure 7-8As shown, the telescopic mechanism 1 includes: a first nut 11, a push rod 12, a push block 13 and a sliding member 14. The first nut 11 is rotatably mounted above one end of the base 3. The first nut 11 is threadedly sleeved on the push rod 12. One end of the sliding member 14 is fixedly connected to the end of the push rod 12, and the other end thereof is circumferentially slidably connected to the push block 13 along the gear collar 4. The push rod 12 slides through the limiting mechanism 2 and the gear collar 4, and the push block 13 is arranged in the gear collar 4.

[0034] It should be noted that: in this embodiment, anti-slip grooves are provided on the outer wall of the first nut 11 .

[0035] The beneficial effect of adopting the above-mentioned preferred scheme is that the first nut thread sleeve is arranged on the push rod, which is conducive to driving the push rod, sliding member and push block to extend through the rotation of the first nut, so that the push block extends in the gear collar and abuts against the bolt nut to be tightened, eliminating the gap between the bolt nut to be tightened and the gear collar, thereby enabling the wrench device to tighten the bolt nut in a small swing space.

[0036] Preferably, Figure 7-8 As shown, the push block 13 is a broken line plate structure, and two sliding limit blocks 131 spaced apart from each other are fixed on the side wall of the push block 13. The two sliding limit blocks 131 are each provided with a sliding groove 132 on the opposite side, and the sliding groove 132 is an arc-shaped groove. The other end of the sliding member 14 is arranged between the two sliding limit blocks 131 and is slidably connected to the two sliding grooves 132.

[0037] The beneficial effects of adopting the above-mentioned preferred scheme are: the other end of the sliding member is slidably connected to the two sliding grooves, which is conducive to the push block rotating with the gear ring without interfering with the push rod and the sliding member. The push block is a broken line plate structure, which is conducive to adapting to the shape of the bolt cap to be tightened, making it easier for the push block to abut against the bolt cap to be tightened.

[0038] Preferably, Figure 8 As shown, the sliding member 14 includes a connecting rod 141 and a sliding rod 142. One end of the connecting rod 141 is fixedly connected to the end of the push rod 12, and the sliding rod 142 vertically passes through the other end of the connecting rod 141. The two ends of the sliding rod 142 are slidably installed in the two sliding grooves 132 in a one-to-one manner.

[0039] The beneficial effect of adopting the above preferred solution is that the sliding rod passes vertically through the other end of the connecting rod, which is conducive to setting the sliding rod in an upward and downward direction, thereby achieving a sliding and fitting connection with the two sliding grooves arranged opposite to each other.

[0040] Preferably, Figure 1-3As shown, two first limit seats 31 are fixed above one end of the base 3 , the first nut 11 is rotatably disposed between the two first limit seats 31 , and the push rod 12 slides through the two first limit seats 31 .

[0041] It should be noted that: in this embodiment, the distance between the two first limit seats 31 is adapted to the thickness of the first nut 11, that is, the first nut 11 can rotate smoothly between the two first limit seats 31, but cannot be displaced in the left and right directions.

[0042] The beneficial effect of adopting the above-mentioned preferred scheme is that the push rod slides through the two first limit seats, and at the same time the first nut thread sleeve is arranged on the push rod, which is conducive to avoiding the first limit seat from interfering with the displacement of the push rod during the axial displacement of the push rod along the first nut under the rotation action of the first nut.

[0043] Preferably, Figure 1-3 As shown, the limiting mechanism 2 includes: a second nut 21, a push cylinder 22, a swinging tooth block 23 and a spring 24. The second nut 21 is threadedly connected to the base 3, and one end of the push cylinder 22 abuts or separates from one end of the second nut 21, and the other end is fixedly connected to one side of the swinging tooth block 23. The swinging tooth block 23 is an arc structure with a first meshing tooth arranged circumferentially on the other side, and the other side of the swinging tooth block 23 engages or separates with the outer wall of the gear collar 4. The spring 24 is sleeved on the push cylinder 22, and its two ends are fixedly connected to the third limiting seat 33 fixed on the base 3 and one side of the swinging tooth block 23 in a one-to-one correspondence. The push cylinder 22 slides through the third limiting seat 33, and the push rod 12 slides through the second nut 21, the push cylinder 22 and the swinging tooth block 23.

[0044] It should be noted that when one end of the push cylinder 22 is separated from one end of the second nut 21 , the spring 24 is in a compressed state, and the rebound force drives the other side of the swinging gear block 23 to engage with the outer wall of the gear ring 4 .

[0045] The beneficial effects of adopting the above-mentioned preferred scheme are: the second nut is conducive to driving the push cylinder and the swinging tooth block to extend or retract, thereby engaging or disengaging with the gear collar, and then limiting the gear collar when engaging with the gear collar, avoiding relative rotation of the gear collar and the base when tightening the bolt cap; the spring is conducive to using the rebound force to apply pre-pressure to the swinging tooth block when one end of the push cylinder is separated from one end of the second nut, driving the swinging tooth block to maintain engagement with the outer wall of the gear collar; the push rod slides through the second nut, the push cylinder and the swinging tooth block, which is conducive to preventing the actions of the telescopic mechanism and the limiting mechanism from interfering with each other, while also reducing the volume of the entire wrench device and increasing the convenience of using the wrench device.

[0046] Preferably, Figure 1-3 As shown, a second limiting seat 32 is further fixed on the base 3 . The second limiting seat 32 and the third limiting seat 33 are spaced apart. The second limiting seat 32 is threadedly sleeved on the second nut 21 .

[0047] Among them, it should be noted that: Figure 1-3 and Figure 10 As shown, in the technical solution of the present invention, the second nut 21 includes a nut block 211 and a threaded connecting rod 212, the left end of the threaded connecting rod 212 is coaxially fixedly connected to the nut block 211, and the right end thereof abuts or separates from one end of the push cylinder 22, the second limit seat 32 is threadedly sleeved on the threaded connecting rod 212, the nut block 211 is arranged outside the second limit seat 32, and the outer wall of the nut block 211 is provided with anti-slip grooves; The diameter of the threaded connecting rod 212 is larger than the outer diameter of the push cylinder 22, thereby facilitating the push cylinder 22 to slide through the second limiting seat 32, thereby preventing interference between the push cylinder 22 and the second limiting seat 32 when the nut 211 rotates to drive the threaded connecting rod 212 to move rightward. Since the second limit seat 32 is threadedly sleeved on the threaded connecting rod 212, and the left end of the threaded connecting rod 212 is coaxially fixedly connected to the nut block 211, the threaded connecting rod 212 can be displaced left and right as the nut block 211 rotates, and the nut block 211 can be rotated outside the second limit seat 32 until it abuts against the second limit seat 32.

[0048] The beneficial effect of adopting the above preferred solution is that the second limit seat is threadedly sleeved on the second nut, which is conducive to driving the push cylinder to move to the right through the rotation of the second nut, thereby making the engagement between the swing gear block and the gear ring tighter.

[0049] Preferably, Figure 4-6 As shown, the gear ring 4 includes two gears 41 and a rotating cylinder 42. The two gears 41 are spaced apart and fixedly sleeved on the rotating cylinder 42. The rotating cylinder 42 is rotatably mounted above the other end of the base 3. The limiting mechanism 2 engages or disengages with the outer wall of the gear 41. The push rod 12 slides through the rotating cylinder 42. The push block 13 is arranged in the gear 41.

[0050] It should be noted that: in the technical solution of the present invention, the outer wall of the two gears 41 spaced apart from each other is provided with a plurality of second meshing teeth for meshing with the first meshing teeth on the other side of the swinging gear block 23, such as Figure 4As shown, the plurality of second meshing teeth on the circumferential direction of the outer wall of the two gears 41 spaced apart from each other correspond to each other and overlap one by one; A preferred solution for rotatably mounting the rotating cylinder 42 above the other end of the base 3 is as follows: a turntable or a bearing is provided above the other end of the base 3, the turntable is fixedly mounted above the other end of the base 3, and the bottom end of the rotating cylinder 42 is fixedly mounted on the turntable; or a mounting hole for mounting a bearing is provided at the other end of the base 3, the outer ring of the bearing is fixedly connected to the inner wall of the mounting hole, and the inner ring of the bearing is fixedly connected to the bottom end of the rotating cylinder 42; The first meshing teeth on the other side of the swing gear block 23 are engaged with or disengaged from the second meshing teeth on the outer wall of the gear 41 .

[0051] The beneficial effects of adopting the above-mentioned preferred scheme are: the rotating cylinder is rotatably installed above the other end of the base, which is conducive to the driving gear rotating above the other end of the base to match the orientation of the bolt nut to be tightened, thereby facilitating the wrench device to be placed in a small swing space and sleeved on the bolt nut to be tightened; the push rod slides through the rotating cylinder, which is conducive to setting the push block in the gear, thereby driving the push block to abut against the bolt nut to be tightened, thereby eliminating the gap between the bolt nut to be tightened and the gear.

[0052] Preferably, Figure 4-6 As shown, a push block limiting groove 44 is provided on the inner wall of the sleeve hole 43, and the push block 13 is adapted to be arranged in the push block limiting groove 44. The push block 13 and the sleeve hole 43 are arranged to form a polygon whose inner wall is adapted to the outer wall of the bolt cap 5 to be tightened.

[0053] It should be noted that: in the technical solution of the present invention, the sleeve hole 43 is a blind hole or a through hole. When the sleeve hole 43 is a through hole, the rotating cylinder 42 is rotatably mounted above the other end of the base 3 through a bearing, so that the sleeve hole 43 is connected to the mounting hole set at the other end of the base 3, so that the wrench device can be sleeved on the bolt cap 5 to be tightened from the upper side or the lower side, that is, Figure 1 The structure shown is directly sleeved on the bolt cap 5 to be tightened, or is sleeved on the bolt cap 5 to be tightened after being turned 180 degrees; when the sleeve hole 43 is a blind hole, the wrench device can only be sleeved on the bolt cap 5 to be tightened from the upper side, that is, Figure 1 The structure shown is flipped 180 degrees and then sleeved onto the bolt cap 5 to be tightened; Since the structure of the bolt cap is mostly a regular hexagon, in a preferred embodiment of the present invention, the inner wall formed by the push block 13 and the sleeve hole 43 is a regular hexagon.

[0054] The beneficial effects of adopting the above-mentioned preferred scheme are: the push block limit groove is conducive to providing space for the installation of the push block, and the push block and the sleeve hole are arranged to form a polygon whose inner wall is adapted to the outer wall of the bolt cap to be tightened, which is conducive to avoiding relative displacement between the push block and the bolt cap to be tightened when the push block abuts against the outer wall of the bolt cap to be tightened, thereby affecting the tightening effect.

[0055] Preferably, Figure 4-6 As shown, a push rod through hole 45 is provided on the circumference of the side wall of the rotating cylinder 42 . The push rod through hole 45 is an arc-shaped through hole connected to the sleeve hole 43 . The push rod 12 slides through the push rod through hole 45 .

[0056] The beneficial effect of adopting the above preferred solution is that the push rod through hole is an arc-shaped through hole connected to the sleeve hole, which is beneficial to avoid interference between the push block, the push rod and the sliding member during the process of the push block rotating with the gear ring.

[0057] The working process of this embodiment is described below: like Figures 1 to 10 As shown, in the first step, manually pull the push cylinder 22 to the left to separate the swing gear block 23 from the gear 41, and cancel the limit on the gear collar 4; In the second step, the gear collar 4 is rotated outside the small swing space according to the orientation of the bolt cap 5 to be tightened in the small swing space, so that the orientation of the sleeve hole 43 in the gear 41 is adapted to the orientation of the bolt cap 5 to be tightened. In this process, the push block 13 rotates with the rotation of the gear collar 4, and the spring 24 is in a compressed state. Then, the push cylinder 22 is released, and under the rebound force of the spring 24, the swinging tooth block 23 is initially engaged with the gear 41, thereby preventing the gear 41, which has been adjusted in orientation, from shifting in the third step. The third step is to place the wrench device into the small swing space and sleeve the hole 43 onto the bolt cap 5 to be tightened. At this time, due to a certain gap between the hole 43 and the bolt cap 5 to be tightened, the wrench device cannot drive the bolt cap 5 to be tightened to rotate in the small swing space. The fourth step is to rotate the nut block 211 in the second nut 21 to move the threaded connecting rod 212 to the right until it abuts against the push cylinder 22. Then, the nut block 211 is continued to be rotated to continuously drive the push cylinder 22 and the swing gear block 23 to the right to move toward the gear 41 until the first meshing teeth on the other side of the swing gear block 23 are tightly meshed with the second meshing teeth on the outer wall of the gear 41. This prevents the screw cap 5 from being unable to be tightened due to loosening of the meshing between the swing gear block 23 and the gear 41 during the process of tightening the screw cap 5. The fifth step is to rotate the first nut 11. Since the first nut 11 is threadedly sleeved on the push rod 12, and the push rod 12 and the sliding member 14 are fixedly connected, the push block 13 and the sliding member 14 are connected in the circumferential sliding direction of the gear collar 4. The push block 13 is arranged in the push block limiting groove 44. Therefore, when the first nut 11 is rotated, the push block limiting groove 44 limits the circumferential rotation of the push block 13 along the push rod 12. Then the corresponding sliding member 14 and the push rod 12 connected with the push block 13 in turn are both limited in circumferential rotation. At this time, the push rod 12 will not rotate with the rotation of the first nut 11, but will move to the right with the rotation of the first nut 11. In the process of the push rod 12 moving to the right, the sliding member 14 and the push block 13 will be driven to move toward the bolt cap 5 to be tightened until the push block 13 is aligned with the bolt to be tightened. The cap 5 abuts (because the gap between the bolt cap 5 to be tightened and the inner wall of the gear collar 4 is very small, the existence of this gap is only to facilitate the gear collar 4 to be set into the bolt cap 5 to be tightened, so the pushing block 13 will only be pushed out a very small distance of the pushing block limiting groove 44, which is approximately equal to the gap between the bolt cap 5 to be tightened and the inner wall of the gear collar 4. That is to say, when the pushing block 13 abuts against the bolt cap 5 to be tightened, the pushing block 13 is still in the pushing block limiting groove 44, and the pushing block limiting groove 44 will still limit the circumferential rotation of the pushing block 13 along the push rod 12). At this time, the pushing block 13 applies pressure to the bolt cap 5 to be tightened, and the wrench device will not be unable to rotate in the small swing space to tighten the bolt cap due to the gap between the sleeve hole 43 and the bolt cap 5 to be tightened; In the sixth step, the base 3 is rotated around the axis of the gear collar 4 so that the entire wrench device rotates in a small swing space, so that the bolt cap 5 to be tightened rotates with the rotation of the wrench device, and then the bolt cap 5 to be tightened in the small swing space can be rotated in the tightening direction until the bolt cap 5 to be tightened is completely tightened or the base 3 is rotated to abut against the interference structure on both sides of the bolt cap 5 to be tightened.

[0058] It should be noted that: since the bolt cap 5 to be tightened has been pre-tightened before being tightened using the wrench device of the present application, the bolt cap 5 to be tightened only needs to be rotated a smaller angle to be completely tightened. Therefore, during the above operation process (that is, the bolt cap 5 to be tightened rotates in the tightening direction as the wrench device rotates), if the bolt cap 5 to be tightened in the small swing space has been completely tightened, it is only necessary to remove the wrench device of the present application. If it still needs to be tightened again (that is, when the base 3 is rotated to abut against the interference structure on both sides of the bolt cap 5 to be tightened, the bolt cap 5 to be tightened is still not completely tightened), then remove the wrench device of the present application and repeat the above operation until the bolt cap 5 to be tightened is completely tightened.

[0059] In the above statements, "eliminating the gap between the bolt nut to be tightened and the gear", "eliminating the gap between the sleeve hole 43 and the bolt nut to be tightened 5" and "eliminating the gap between the bolt nut to be tightened and the gear collar" mean that the push block 13 applies pressure to the bolt nut to be tightened 5, so that the bolt nut to be tightened 5 will not rotate relatively in the sleeve hole 43, so that the wrench device will not be unable to rotate in the small swing space to tighten the bolt nut due to the gap between the sleeve hole 43 and the bolt nut to be tightened 5. In fact, this gap still exists, but because the push block 13 applies pressure to the bolt nut to be tightened 5, the bolt nut to be tightened 5 will not rotate relatively in the sleeve hole 43.

[0060] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0062] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0063] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0064] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0065] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A wrench device for eliminating gaps, characterized in that: include: A telescopic mechanism (1), a limiting mechanism (2), a base (3) and a gear collar (4), wherein the axial direction of the gear collar (4) is perpendicular to the axial direction of the telescopic mechanism (1), and the gear collar (4) is provided with a sleeve hole (43) along its axial direction. One end of the telescopic mechanism (1) is rotatably mounted on one end of the base (3), and the other end thereof is arranged in the gear collar (4). One end of the limiting mechanism (2) is rotatably mounted on the base (3), and the other end thereof is engaged with or separated from the gear collar (4). The telescopic mechanism (1) slides through the limiting mechanism (2) and the gear collar (4), and the gear collar (4) is rotatably mounted on the other end of the base (3).

2. The gap eliminating wrench device according to claim 1, characterized in that: The telescopic mechanism (1) comprises: a first nut (11), a push rod (12), a push block (13) and a sliding member (14); the first nut (11) is rotatably mounted above one end of the base (3); the first nut (11) is threadedly sleeved on the push rod (12); one end of the sliding member (14) is fixedly connected to the end of the push rod (12); the other end of the sliding member (14) is slidably connected to the push block (13) along the circumferential direction of the gear collar (4); the push rod (12) slides through the limiting mechanism (2) and the gear collar (4); and the push block (13) is arranged in the gear collar (4).

3. The gap eliminating wrench device according to claim 2, characterized in that: The push block (13) is a folded-line plate-like structure. Two sliding limit blocks (131) are fixedly provided on the side wall of the push block (13) and are spaced apart from each other. A sliding groove (132) is provided on the opposite side of the two sliding limit blocks (131). The sliding groove (132) is an arc-shaped groove. The other end of the sliding member (14) is provided between the two sliding limit blocks (131) and is slidably connected to the two sliding grooves (132).

4. The gap eliminating wrench device according to claim 3, characterized in that: The sliding member (14) includes a connecting rod (141) and a sliding rod (142), one end of the connecting rod (141) is fixedly connected to the end of the push rod (12), and the sliding rod (142) vertically passes through the other end of the connecting rod (141), and the two ends of the sliding rod (142) are slidably installed in the two sliding grooves (132) in a one-to-one correspondence.

5. The gap eliminating wrench device according to claim 2, characterized in that: Two first limit seats (31) are fixedly provided above one end of the base (3); the first nut (11) is rotatably arranged between the two first limit seats (31); and the push rod (12) slides through the two first limit seats (31).

6. The gap eliminating wrench device according to claim 2, characterized in that: The limiting mechanism (2) comprises: a second nut (21), a push cylinder (22), a swinging tooth block (23) and a spring (24), wherein the second nut (21) is threadedly connected to the base (3), one end of the push cylinder (22) abuts or separates from one end of the second nut (21), and the other end is fixedly connected to one side of the swinging tooth block (23), the swinging tooth block (23) is an arc-shaped structure with a first meshing tooth provided in the circumference of the other side, the other side of the swinging tooth block (23) meshes or separates with the outer wall of the gear collar (4), the spring (24) is sleeved on the push cylinder (22), and the two ends thereof are fixedly connected to a third limiting seat (33) fixedly provided on the base (3) and one side of the swinging tooth block (23) in a one-to-one correspondence, the push cylinder (22) slides through the third limiting seat (33), and the push rod (12) slides through the second nut (21), the push cylinder (22) and the swinging tooth block (23).

7. The gap eliminating wrench device according to claim 6, characterized in that: A second limiting seat (32) is also fixedly provided on the base (3), the second limiting seat (32) and the third limiting seat (33) are arranged at intervals, and the second limiting seat (32) is threadedly sleeved on the second nut (21).

8. The gap eliminating wrench device according to claim 2, characterized in that: The gear collar (4) comprises two gears (41) and a rotating cylinder (42). The two gears (41) are spaced apart from each other and fixedly sleeved on the rotating cylinder (42). The rotating cylinder (42) is rotatably mounted above the other end of the base (3). The limiting mechanism (2) engages or disengages with the outer wall of the gear (41). The push rod (12) slides through the rotating cylinder (42). The push block (13) is arranged in the gear (41).

9. The gap eliminating wrench device according to claim 8, characterized in that: A push block limiting groove (44) is provided on the inner wall of the sleeve hole (43), and the push block (13) is adapted to be arranged in the push block limiting groove (44). The push block (13) and the sleeve hole (43) are arranged to form a polygon whose inner wall is adapted to the outer wall of the bolt cap (5) to be tightened.

10. The gap eliminating wrench device according to claim 8, characterized in that: A push rod through hole (45) is provided on the circumference of the side wall of the rotating cylinder (42). The push rod through hole (45) is an arc-shaped through hole connected to the sleeve hole (43). The push rod (12) slides through the push rod through hole (45).

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