Speed wrench

Abstract

The invention relates to the technical field of hardware tools, and provides a speed wrench which comprises a grip, a fixed wrench body and a movable wrench body, a sliding rail and a cross rod which are parallel to each other are connected between the grip and the fixed wrench body, the sliding rail is located on the side where a jaw is located, and the movable wrench body is slidably arranged on the sliding rail in a sleeving mode. A locking mechanism is arranged on the end face, facing the transverse rod, of the movable clamp body and comprises a sliding rod which is fixed to the end face and arranged facing the transverse rod, the sliding rod is slidably sleeved with a helical tooth block, and a helical rack matched with the helical tooth block is fixed to the transverse rod. A compression spring arranged on the sliding rod in a sleeving mode is connected between the movable clamp body and the oblique tooth block. According to the clamp, flexible movement of the movable clamp body can be achieved, the distance between the fixed clamp body and the movable clamp body can be rapidly adjusted, the clamp is adaptive to workpieces of different sizes, rapid locking after adjustment of the movable clamp body is achieved through meshing of a helical tooth block and a helical rack of the locking mechanism, and meanwhile stable force application is guaranteed by adjusting the fixed clamp body to complement jaw errors.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hardware tools, in particular to a quick wrench. BACKGROUND

[0002] The wrench is a commonly used tool for tightening or loosening bolts and nuts, and is widely used in mechanical maintenance, construction, automobile maintenance and other fields. The existing wrenches are mainly divided into fixed open wrenches, movable wrenches and quick wrenches, among which the quick wrench is favored by the majority of users due to its characteristics of quick adjustment of opening size and high operation efficiency. The stability of the adjustment mechanism of the quick wrench is poor when in use, and the opening is easy to deviate when tightening or loosening high-strength bolts, which affects the operation accuracy and safety, and there is an error when locking the jaws due to the influence of the gap between the parts. SUMMARY

[0003] The present application provides a quick wrench, which realizes flexible movement of the movable jaw body through the sliding cooperation of the sliding rail and the sliding sleeve, quickly adjusts the distance between the fixed jaw body and the movable jaw body, and adapts to workpieces of different sizes. At the same time, through the meshing of the bevel gear block and the bevel gear of the locking mechanism, the quick locking of the movable jaw body after adjustment is realized, and the adjustment process is efficient and stable.

[0004] To this end, the technical scheme adopted is as follows: A quick wrench, comprising a handle, a fixed jaw body and a movable jaw body, wherein the handle and the fixed jaw body are connected with mutually parallel sliding rails and crossbars, the sliding rails are located on one side of the jaw opening, the movable jaw body is slidably sleeved on the sliding rail, the end face of the movable jaw body towards the crossbar is provided with a locking mechanism, the locking mechanism comprises a sliding rod fixed on the end face and arranged towards the crossbar, a bevel gear block is slidably sleeved on the sliding rod, a bevel gear matched with the bevel gear block is fixed on the crossbar, and a compression spring sleeved on the sliding rod is connected between the movable jaw body and the bevel gear block.

[0005] Further technical solutions are that a compression sleeve fixed on the bevel gear block is sleeved on the outside of the sliding rod, one end of the compression sleeve towards the crossbar penetrates through the crossbar and is threadedly connected with a pressing plate, the pressing plate is of a rectangular structure, a sliding opening for the compression sleeve to penetrate through is formed on the crossbar along the sliding direction of the movable jaw body, the width of the sliding opening is greater than the short side length of the pressing plate and less than the long side length of the pressing plate, and when the bevel gear block is meshed with the bevel gear, the pressing plate protrudes out of the sliding opening.

[0006] Further technical solutions are that the sliding rod penetrates into a connecting hole of the compression sleeve, an internal thread is formed on the hole wall of the connecting hole towards the pressing plate side, and a connecting rod fixed on the pressing plate penetrates into the connecting hole and matches with the internal thread, when the bevel gear block is meshed with the bevel gear, the compression sleeve and the end face of the sliding opening towards the pressing plate side are flush with each other.

[0007] Further technical solutions are that one end of the cross rod towards the fixed jaw body is rotatably connected with a threaded rod arranged along the length direction of the cross rod, a threaded hole matched with the threaded rod is formed on the fixed jaw body, the threaded rod is threadedly matched through the threaded hole and fixed with a rotating knob, and a guide sliding hole through which the sliding rail passes is further formed on the fixed jaw body.

[0008] Further technical solutions are that the movable jaw body comprises a force applying body and a sliding sleeve sleeved with the sliding rail and slidably connected therewith.

[0009] Further technical solutions are that the cross section of the sliding rail is a T-shaped structure, and a T-shaped groove matched with the sliding rail is formed on the sliding sleeve.

[0010] Further technical solutions are that the outer side of the handle is sleeved with an anti-skid holding sleeve, and the anti-skid holding sleeve is made of silica gel.

[0011] Further technical solutions are that a hanging hole is formed on the handle, and the hanging hole is formed at the tail of the handle.

[0012] Further technical solutions are that the cross rod is correspondingly fixed with a bevel gear rack on both sides of the sliding opening, two groups of bevel gears meshed with the two bevel gear racks are arranged on the bevel gear block corresponding to the positions of the two bevel gear racks, and the pressing sleeve and the sliding rod are located in the middle of the two bevel gears.

[0013] The working principle and beneficial effects of the present application are as follows: 1. The quick wrench realizes flexible movement of the movable jaw body through the sliding cooperation of the sliding rail and the sliding sleeve, quickly adjusts the distance between the fixed jaw body and the movable jaw body, adapts to workpieces of different sizes, and realizes quick locking of the movable jaw body after adjustment through the meshing of the bevel gear block and the bevel gear rack of the locking mechanism, so that the adjustment process is efficient and stable.

[0014] 2. In the case that there is still an error gap after the movable jaw body is locked, the fixed jaw body can be finely adjusted through the rotating knob and the threaded rod to make up for the small gap caused by the structural characteristics of the bevel gear block and the bevel gear rack, so as to ensure that the size of the jaw formed finally completely adapts to the workpiece, and significantly enhance the reliability and safety under heavy load working conditions.

[0015] 3. On this basis, through the cooperation of the pressing plate, the operation convenience of the locking mechanism adjustment can be improved, and the intermeshing bevel gear block and bevel gear rack can be assisted to strengthen locking, so as to avoid the opening from deviating when the jaw force is large, and ensure the stability and safety of the operation. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0017] Figure 1This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the overall structure from a second perspective of this application; Figure 3 This is a schematic diagram of the overall structure from a third perspective of this application; Figure 4 This is a schematic diagram of the overall structure from the fourth angle of this application; Figure 5 for Figure 4 Enlarged structural diagram of section A in the middle; Figure 6 This is a schematic diagram of the structure of the movable clamp described in this application; Figure 7 This is a schematic diagram of the structure of the fixing clamp described in this application.

[0018] In the diagram: 1. Handle; 101. Suspension hole; 2. Slide rail; 3. Fixed clamp body; 4. Sliding sleeve; 41. T-slot; 5. Movable clamp body; 51. Force-applying body; 6. Crossbar; 601. Sliding mouth; 7. Locking mechanism; 701. Helical tooth block; 702. Helical rack; 703. Sliding rod; 704. Compression spring; 705. Pressure sleeve; 71. Connecting hole; 706. Pressure plate; 72. Connecting rod; 8. Anti-slip grip sleeve; 91. Threaded rod; 92. Threaded hole; 93. Rotary knob; 94. Guide hole. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1-7 As shown, a quick wrench includes a handle 1, a fixed jaw 3, and a movable jaw 5. The handle 1 and the fixed jaw 3 are connected by a parallel slide rail 2 and a crossbar 6, wherein the slide rail 2 is located on the side where the jaws are located. The movable jaw 5 is slidably sleeved on the slide rail 2. The end face of the movable jaw 5 facing the crossbar 6 has a locking mechanism 7. The locking mechanism 7 includes a slide rod 703 fixed to the end face and facing the crossbar 6. A helical tooth block 701 is slidably sleeved on the slide rod 703. A helical rack 702 matching the helical tooth block 701 is fixed on the crossbar 6. A compression spring 704 sleeved on the slide rod 703 connects the movable jaw 5 and the helical tooth block 701.

[0021] The movable clamp body 5 in the embodiment of the application can slide on the slide rail 2 and be locked by the locking mechanism 7, so as to quickly adjust the distance between the fixed clamp body 3 and the movable clamp body 5, and adapt to workpieces of different sizes. Specifically, the movable clamp body 5 is connected with a bevel tooth block 701 through a slide rod 703 and a compression spring 704, the handle 1 is rigidly connected with the fixed clamp body 3 through the cross rod 6, so as to avoid deformation under stress, the cross rod 6 is arranged along the sliding direction of the movable clamp body 5 and is fixed with a bevel gear 702 corresponding to the tooth surface of the bevel tooth block 701, under the action of the compression spring 704, the bevel tooth block 701 is extruded to engage and lock with the bevel gear 702 guided along the slide rod 703, so as to quickly lock the movable clamp body 5 by means of the slide rod 703 and the angle of the ratchet self-locking, and avoid loosening during operation. When the movable clamp body 5 needs to be adjusted to slide, the bevel tooth block 701 is pressed to resist the elastic force of the compression spring 704 to make it disengage from the bevel gear 702, and the compression spring 704 drives the bevel tooth block 701 to automatically engage with the bevel gear 702 in a close state, without the need for additional continuous pressure.

[0022] In another embodiment of the application, a pressing sleeve 705 fixed on the bevel tooth block 701 is arranged outside the slide rod 703, one end of the pressing sleeve 705 towards the cross rod 6 penetrates through the cross rod 6 and is threadedly connected with a pressing plate 706, the pressing plate 706 is of a rectangular structure, the cross rod 6 is provided with a slide opening 601 along the sliding direction of the movable clamp body 5, the slide opening 601 has a width greater than the short side length of the pressing plate 706 and less than the long side length of the pressing plate 706, and when the bevel tooth block 701 engages with the bevel gear 702, the pressing plate 706 protrudes out of the slide opening 601.

[0023] In the embodiment, the pressing sleeve 705, the bevel tooth block 701 and the pressing plate 706 are integrally connected, when the pressing plate 706 is pressed, the function of pressing the bevel tooth block 701 to quickly disengage from the bevel gear 702 in the above-mentioned embodiment can be realized, and the pressing plate 706 provides operation convenience for the implementation of the function. In order to ensure that the pressing sleeve 705 and the pressing plate 706 can move with the bevel tooth block 701, the slide opening 601 is arranged on the cross rod 6, and on this basis, the pressing plate 706 is arranged in a rectangular structure, the slide opening 601 has a width greater than the short side length of the pressing plate 706 and less than the long side length of the pressing plate 706, and when the bevel tooth block 701 engages with the bevel gear 702, the pressing plate 706 protrudes out of the slide opening 601.

[0024] Thus, when the rotating plate 706 is transversely aligned with the sliding port 601, the rotating plate 706 can be pressed into the sliding port 601, and when it is longitudinally aligned, it can be clamped outside the sliding port 601. Therefore, when pressing, it is transversely rotated into the sliding port 601, and when locking, it is longitudinally rotated to be clamped in the sliding port 601. Through the threaded connection between the rotating plate 706 and the pressing sleeve 705, the position of the rotating plate 706 relative to the bevel gear block 701 can be adjusted to ensure that when the bevel gear block 701 is engaged with the bevel gear rack 702, the rotating plate 706 can lock them by the clamping effect of the sliding port 601. Anti-skid texture is provided on the surface of the rotating plate 706 to increase the contact area when the user presses, reduce the pressing pressure, and improve the operation comfort.

[0025] On this basis, the specific embodiment of the threaded connection structure between the rotating plate 706 and the pressing sleeve 705 is that the sliding rod 703 is inserted into the connecting hole 71 of the pressing sleeve 705, an internal thread is formed on the hole wall of the connecting hole 71 towards the side of the rotating plate 706, a connecting rod 72 is fixed on the rotating plate 706 and inserted into the connecting hole 71 and matched with the thread, and when the bevel gear block 701 is engaged with the bevel gear rack 702, the end face of the pressing sleeve 705 towards the side of the rotating plate 706 is flush with the end face of the sliding port 601. Because when the bevel gear block 701 is engaged with the bevel gear rack 702, the shortest distance between the two is the sum of their lengths, the length of the pressing sleeve 705 is set to this distance to avoid damaging the bevel gear block 701 and the bevel gear rack 702 when the rotating plate 706 is rotated and locked, and thus the length of the pressing sleeve 705 is used to limit it.

[0026] As shown in Figure 2 and Figure 6 , the horizontal rod 6 is correspondingly fixed with a bevel gear rack 702 on both sides of the sliding port 601, and the bevel gear block 701 is arranged with two groups of bevel gears that are engaged with the two bevel gear racks 702, respectively, and the pressing sleeve 705 and the sliding rod 703 are located in the middle of the two bevel gears. Thus, the two groups of bevel gear racks 702 and bevel gear blocks 701 work together to increase the connection strength and area, making the overall structural layout more balanced and the connection more stable.

[0027] In another embodiment of the application, a threaded rod 91 is rotatably connected to the end of the horizontal rod 6 towards the fixed jaw body 3, as shown in Figure 7 , the fixed jaw body 3 is further provided with a guide sliding hole 94 for the sliding rail 2 to pass through, and the fixed jaw body 3 is provided with a threaded hole 92 matched with the threaded rod 91, and the threaded rod 91 is threadedly matched through the threaded hole 92 and fixed with a rotating knob 93.

[0028] The embodiment can be driven by rotating the threaded rod 91 to move the fixed jaw body 3 towards the movable jaw body 5. When the movable jaw body 5 is adjusted and locked by the locking mechanism 7, it is affected by the production precision and structural characteristics of the helical rack 702 and the helical block 701. When the two are engaged, the gap between the jaw and the workpiece cannot be completely eliminated. When the gap is small, the threaded rod 91 is rotated by rotating the knob 93, and the fixed jaw body 3 is driven to move slightly towards the movable jaw body 5. Thus, under the double action, the workpiece is clamped tightly with the appropriate jaw size. In the whole process, the slide rail 2 plays a guiding role and also prevents the fixed jaw body 3 from rotating.

[0029] In one embodiment of the movable jaw body 5, the force applying body 51 and the sleeve 4 are connected to the slide rail 2. If the movable jaw body 5 is integrally formed, it will have precise helical blocks 701 and other structures, which will make the shape extremely complex and require expensive processing by multi-axis CNC machine tools. The two are designed as separate parts and are connected and locked by guide grooves. Thus, it can be relatively simple, only a smooth guide groove is needed. The sleeve 4 is a small independent part, which integrates the helical blocks 701 and other precise structures. It can be precisely stamped or molded with high hardness material, which is efficient and low cost.

[0030] As shown in Figure 4 and Figure 6 , the cross section of the slide rail 2 is T-shaped structure, and the sleeve 4 is provided with a T-shaped groove 41 matched with it. The T-shaped slide rail 2 and the sleeve 4 form a precise limit sliding fit to avoid the sleeve 4 from falling off during sliding. The T-shaped structure can enhance the bending strength of the slide rail 2 to avoid deformation under stress, ensuring the stability and precision of the movement of the movable jaw body 5. At the same time, it also ensures that the fixed jaw body 3 will not rotate when the threaded rod 91 rotates, but only moves in the direction of the jaw opening and closing.

[0031] As shown in Figure 2 , one embodiment of the handle 1 is provided with an anti-slip holding sleeve 8 outside. The anti-slip holding sleeve 8 is made of silica gel, which increases the friction coefficient when holding, avoids hand slipping during use, and ensures that the torque can be applied stably. The handle 1 is provided with a hanging hole 101, which is provided at the tail of the handle 1. Thus, the wrench can be hung on the hooks of the tool box or the nails on the wall, which is convenient for arrangement and use, and avoids tool scattering. Or when high-altitude operation or tool falling is needed, the safety rope can be tied through the hanging hole 101 to connect the wrench to the wrist, tool belt or fixed point. In addition, the hanging hole 101 can also be used to cooperate with other tools, such as a lever, to increase the leverage.

[0032] Specifically, when using the quick wrench, the anti-slip handle 8 part of the handle 1 is gripped to facilitate the application of torque. First, rotate the threaded rod 91 by rotating the knob 93 to form a gap in front of the end face of the fixed jaw body 3 and the crossbar 6, leaving a space for subsequent adjustment of the fixed jaw body 3. Then, align the jaw with the force applying member, rotate the pressing plate 706 to align it with the sliding port 601, and press the pressing plate 706 into the sliding port 601 due to the large width of the sliding port 601. The pressing plate 706 is threadedly connected with the pressing sleeve 705, thereby driving the pressing sleeve 705 and the inclined tooth block 701 fixed with the pressing sleeve 705 to press inward against the elastic force of the compression spring 704. The inclined tooth block 701 is disengaged from the inclined rack 702, and the sliding sleeve 4 can freely slide on the sliding rail 2 to a position where the movable jaw body 5 can stably clamp the force applying member. Loosen the pressing plate 706, and the inclined tooth block 701 is pressed by the compression spring 704 to pop out towards the inclined rack 702 and re-engage with it. At the same time, the inclined tooth block 701 drives the sliding sleeve 4 and the pressing plate 706 to pop out outward, and the pressing plate 706 protrudes from the sliding port 601; At this time, if the size of the jaw is just right for the force applying member without error gap, directly reverse rotate the pressing plate 706 to align it with the sliding port 601 and clamp it on the outer edge of the sliding port 601 to re-position the locked inclined tooth block 701 and inclined rack 702 for the second time to prevent them from disengaging and avoid the jaw from shifting. During the whole process, the fixed jaw body 3 does not need to be moved again. If the size of the jaw is limited by the structure of the inclined tooth block 701 and the inclined rack 702, there is a small error, first rotate the threaded rod 91 to move the fixed jaw body 3 closer to the movable jaw body 5 to compensate for the error, and then rotate the pressing plate 706 to lock the inclined tooth block 701 and the inclined rack 702.

[0033] The above is only a preferred embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A quick-release wrench, comprising a handle (1), a fixed clamping body (3), and a movable clamping body (5), characterized in that, The grip (1) and the fixed clamp body (3) are connected by a parallel slide rail (2) and a crossbar (6), wherein the slide rail (2) is located on the side where the clamp jaws are located, the movable clamp body (5) is slidably sleeved on the slide rail (2), the movable clamp body (5) has a locking mechanism (7) on the end face of the crossbar (6), the locking mechanism (7) includes a slide bar (703) fixed to the end face and set towards the crossbar (6), a helical tooth block (701) is slidably sleeved on the slide bar (703), a helical rack (702) matching the helical tooth block (701) is fixed on the crossbar (6), and a compression spring (704) sleeved on the slide bar (703) is connected between the movable clamp body (5) and the helical tooth block (701).

2. A quick-release wrench according to claim 1, characterized in that, The slide bar (703) is fitted with a pressure sleeve (705) fixed on the helical tooth block (701). The end of the pressure sleeve (705) facing the cross bar (6) passes through the cross bar (6) and is threadedly connected to a pressure plate (706). The pressure plate (706) has a rectangular structure. The cross bar (6) has a sliding opening (601) along the sliding direction of the movable clamp body (5) for the pressure sleeve (705) to pass through. The width of the sliding opening (601) is greater than the short side length of the pressure plate (706) and less than the long side length of the pressure plate (706). When the helical tooth block (701) meshes with the helical tooth rack (702), the pressure plate (706) protrudes out of the sliding opening (601).

3. A quick-release wrench according to claim 2, characterized in that, The slide rod (703) passes through the connecting hole (71) of the pressure sleeve (705). The connecting hole (71) has an internal thread on the side wall facing the pressure plate (706). The pressure plate (706) has a connecting rod (72) that passes through the connecting hole (71) and matches its thread. When the helical tooth block (701) meshes with the helical tooth rack (702), the end faces of the pressure sleeve (705) and the slide (601) facing the pressure plate (706) are flush with each other.

4. A quick-release wrench according to claim 1, characterized in that, The end of the crossbar (6) facing the fixed clamp body (3) is rotatably connected to a threaded rod (91) arranged along the length direction of the crossbar (6). The fixed clamp body (3) is provided with a threaded hole (92) that matches the threaded rod (91). The threaded rod (91) is threaded through the threaded hole (92) and fixed with a rotary knob (93). The fixed clamp body (3) is also provided with a guide hole (94) for the slide rail (2) to pass through.

5. A quick-release wrench according to claim 1, characterized in that, The movable clamp (5) includes a force-applying body (51) and a sliding sleeve (4) that is sleeved on the slide rail (2) and slidably connected thereto.

6. A quick-release wrench according to claim 1, characterized in that, The slide rail (2) has a T-shaped cross-section, and the slide sleeve (4) has a matching T-shaped groove (41).

7. A quick-release wrench according to claim 1, characterized in that, The outer side of the grip (1) is fitted with an anti-slip grip sleeve (8), which is made of silicone.

8. A quick-release wrench according to claim 1, characterized in that, The handle (1) is provided with a hanging hole (101), which is located at the tail of the handle (1).

9. A quick-release wrench according to claim 2, characterized in that, The crossbar (6) has helical racks (702) fixed on both sides of the slide (601). The helical rack (701) has two sets of helical teeth that mesh with the helical racks (702) on both sides. The pressure sleeve (705) and the slide bar (703) are located in the middle of the two helical teeth.

Images