A bolt tightening tool

Abstract

The application discloses a bolt locking tool, which comprises a base assembly, an operating pressure rod movably arranged on the top of the base assembly, a tooth-shaped pushing piece integrally arranged on the bottom of the base assembly, a self-resetting locking assembly arranged below the base assembly, the tooth-shaped pushing piece driving the self-resetting locking assembly to rotate around a center line, and a locking opening arranged on the bottom of the self-resetting locking assembly. The tooth-shaped pushing piece drives the self-resetting locking assembly to segmentally rotate with the frequency of repeated pressing of the operating pressure rod, so that the bolt clamped in the locking opening is locked. The bolt locking tool disclosed by the application can drive the locking piece to fasten the bolt through the action of repeated pressing of the operating lever up and down in a narrow area where the operating lever cannot rotate to fasten the bolt, and has higher universality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of screw wrenches, in particular to a screw locking tool. BACKGROUND

[0002] Screw wrenches are commonly used tools in daily life and construction, with a wide range of applications and simple operation, which can effectively solve problems within the commonly used range. However, because the commonly used screw wrench is a general tool, it cannot be used normally in many special situations in mechanical construction or daily maintenance. For example, it is difficult to tighten or loosen the screw in a deep and narrow gap, and a lengthened rod needs to be used for operation. However, the lengthened rod is not fixed firmly, and it may not meet the operation requirements. In addition, the screw cannot be effectively fixed when operating in a narrow gap, which increases the difficulty of operation and greatly affects the construction efficiency.

[0003] For example, a screw wrench suitable for use in narrow gaps is disclosed in Chinese patent document "CN210732292U", which comprises a main rod, a wrench adapter and a force handle. The force handle and the wrench adapter are respectively arranged at the upper and lower ends of the main rod. The main rod comprises at least one connecting rod, the upper end of the connecting rod is provided with a connecting column, and the lower end is provided with a connecting groove. Adjacent connecting rods are connected by fixing the connecting column in the connecting groove. The wrench adapter comprises a sleeve at the lower part and a connecting column at the upper part. A sleeve groove is formed on the bottom surface of the sleeve. One end of the force handle is provided with a connecting groove. A magnetic patch is arranged in the connecting groove. This screw wrench is provided with multiple connecting rods connected to form a main rod. The length of the main rod is determined according to the actual situation, and it is suitable for use in different depths of narrow gaps. However, this method can only tighten or disassemble the screw by rotating the main stem, but it cannot be tightened in a narrow area where the main stem cannot be rotated. Therefore, the present application provides a screw locking tool. SUMMARY

[0004] In view of the problem that the screw wrench in the background art cannot be rotated for operation in a narrow space, the present application provides a screw locking tool. By repeatedly pressing the pressing rod, the tooth-shaped pushing member drives the self-resetting locking assembly to rotate in a segmented manner with the pressing frequency, thereby locking the screw clamped in the locking port.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0006] The utility model provides a bolt locking tool, including base assembly, the top of base assembly is movably provided with operation pressure rod, the bottom of base assembly is inserted with the toothed pusher, the bottom of base assembly is still provided with the self-resetting locking assembly, the toothed pusher drives the self-resetting locking assembly to rotate around the center line, the bottom of self-resetting locking assembly is provided with the locking mouth.

[0007] As preferred, the self-resetting locking assembly includes a locking piece, and the locking piece is provided with an engaging protrusion corresponding to the toothed pusher.

[0008] Further, the toothed pusher is in sawtooth structure at the lower part, and the engaging protrusion is provided with an inclined edge structure at the upper edge, and the inclined edge structure abuts against the sawtooth structure.

[0009] The engaging protrusion on the locking piece cooperates with the sawtooth structure at the lower part of the toothed pusher through the inclined edge structure. When the toothed pusher moves downward, the sawtooth structure contacts the inclined edge structure on the engaging protrusion, the toothed pusher continues to move downward, pushes the sawtooth structure to deflect, and finally the toothed pusher and the tooth groove of the sawtooth structure are engaged, completing a pushing and rotating work on the locking piece.

[0010] As preferred, the base assembly includes a base, and the base is provided with connecting plates at both sides, one end of the connecting plate is hinged to the operation pressure rod, and the other end is hinged to the base; the bottom is provided with a joint cylinder, the inner wall of the joint cylinder is provided with a sliding groove, the sliding groove extends from the joint cylinder to the base, and the toothed pusher is in sliding connection with the sliding groove.

[0011] Further, the operation pressure rod is provided with a longitudinal pressure head, the top of the base is provided with a through hole in communication with the joint cylinder corresponding to the longitudinal pressure head, and the longitudinal pressure head is inserted into the through hole.

[0012] Further, the joint cylinder is provided with a sleeve cylinder at the bottom, the base, the joint cylinder and the sleeve cylinder are integrally formed, and the sleeve cylinder is provided with an end face bearing.

[0013] The connecting plate connects the operation pressure rod and the base, so that the longitudinal pressure head of the operation pressure rod can be stably arranged above the base. When the user lifts the operation pressure rod away from one end of the base, the connecting plate and the operation pressure rod are connected as a base point, the longitudinal pressure head is pressed through the through hole, and the toothed pusher is pushed to move downward.

[0014] As preferred, the self-resetting locking assembly further comprises a reset element, a limiting platform is arranged on the locking member, the reset element is sleeved on the locking member, the top of the reset element abuts against the bottom of the limiting platform, and the top of the limiting platform abuts against an end face bearing. The end face bearing is used for ensuring smooth rotation of the locking member relative to the base, and the limiting platform can separate the end face bearing and the reset element, so that the end face bearing and the reset element can be positioned in the working position, and thus the rotation of the locking member is realized. When the locking member completes rotation, the longitudinal pressing head moves upward, the reset element releases energy to recover deformation, at this time, the tooth-shaped pushing member also moves upward and resets in the upward pushing process of the reset element at the bottom of the locking member, and waits for the next pressing work, so that the step-by-step rotation of the locking member is realized.

[0015] As preferred, the self-resetting locking assembly further comprises a shell sleeved on the outside of the sleeve barrel, and the reset element is arranged in the shell. The shell wraps the reset element, so that the reset element cannot be separated from the locking member to cause failure of the self-resetting locking assembly.

[0016] Further, the shell can be detachably connected to the sleeve barrel. The shell can be threadedly connected to the sleeve barrel, and after the shell is detached, the internal parts can be replaced and maintained.

[0017] Therefore, the self-resetting locking assembly has the following beneficial effects: (1) through repeated pressing operation of the pressing rod, the tooth-shaped pushing member drives the self-resetting locking assembly to perform segmented self-rotation accompanying pressing frequency, so that the locking of the bolt clamped in the locking port is realized; (2) when the tooth-shaped pushing member moves downward, the sawtooth structure contacts the inclined edge structure on the convex rib, the tooth-shaped pushing member pushes the sawtooth structure downward and deflects, and finally the tooth-shaped pushing member is clamped in the tooth groove of the sawtooth structure, so that one-time pushing and rotating work of the locking member is completed; (3) after the locking member completes rotation, the reset element releases energy to recover deformation, the tooth-shaped pushing member also moves upward and resets in the upward pushing process of the reset element at the bottom of the locking member, and waits for the next pressing of the longitudinal pressing head, so that the step-by-step rotation of the locking member is realized; (4) the bolt locking tool disclosed by the application can drive the locking member to fasten the screw through repeated up-down pressing action in a narrow area where the operating rod cannot rotate to fasten the bolt, and the bolt locking tool has stronger universality. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the exploded view of the application.

[0019] Figure 2 is the structure schematic view of the base assembly. Figure 1

[0020] Figure 3 is the sectional view of the application.

[0021] Figure 4 is the enlarged view of A in the figure. Figure 1 ​​

[0022] In the figure: 100, base assembly, 101, connecting plate, 1, operating pressure rod, 11, longitudinal pressure head, 200, self-resetting locking assembly, 201, locking port, 2, tooth-shaped pusher, 21, reset element, 22, sawtooth structure, 3, locking piece, 31, clamping rib, 32, limiting table, 33, bevel structure, 4, base, 41, through hole, 5, engagement cylinder, 51, sliding groove, 6, sleeve cylinder, 61, end face bearing, 7, shell. DETAILED DESCRIPTION

[0023] The application will be further described below in conjunction with the accompanying drawings and specific embodiments. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the application, and cannot be understood as a limitation of the application.

[0024] In the description of the application, it should be understood that the terms "center", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0025] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0026] Example 1

[0027] As shown in Figure 1 , 2 As shown in Figure 1 , 2As shown in the figure, a bolt locking tool comprises a base assembly 100, an operating pressure rod 1 movably arranged on the top of the base assembly 100, a toothed pushing piece 2 insertedly arranged on the bottom of the base assembly 100, and a self-resetting locking assembly 200 arranged below the base assembly 100. The toothed pushing piece 2 drives the self-resetting locking assembly 200 to rotate around the center line, and the self-resetting locking assembly 200 is provided with a locking port 201 on the bottom. The base assembly 100 cooperates with the operating pressure rod 1 to push the toothed pushing piece 2. The toothed structure on the bottom of the toothed pushing piece 2 can cooperate with the self-resetting locking assembly 200 to ensure the self-resetting locking assembly 200 to rotate, and the locking port 201 on the bottom of the self-resetting locking assembly 200 can be engaged with the bolt to be locked, so that the self-resetting locking assembly 200 can complete the locking of the bolt during the rotation.

[0028] As shown in the figure, Figure 3 The self-resetting locking assembly 200 comprises a locking piece 3, and the locking piece 3 is provided with an engaging convex rib 31 corresponding to the toothed pushing piece 2. The toothed pushing piece 2 can abut against the engaging convex rib 31 and push the locking piece 3 to rotate around the center line. Further, the lower part of the toothed pushing piece 2 is a sawtooth structure 22, and the upper edge of the engaging convex rib 31 is provided with a bevel structure 33, as shown in the figure, Figure 4 The bevel structure abuts against the sawtooth structure 22. The engaging convex rib 31 on the locking piece 3 cooperates with the sawtooth structure 22 on the lower part of the toothed pushing piece 2 through the bevel structure 33. When the toothed pushing piece 2 moves downward, the sawtooth structure 22 contacts the bevel structure 33 on the engaging convex rib, the toothed pushing piece 2 continues to move downward, pushes the sawtooth structure 22 to deflect, and finally the toothed pushing piece 2 is engaged with the tooth groove of the sawtooth structure 22 to complete a pushing and rotating work of the locking piece 3. In this embodiment, the bevel structure 33 is arranged in a direction from the upper left to the lower right, and the locking piece 3 rotates clockwise to lock the bolt.

[0029] The base assembly 100 comprises a base 4, both sides of which are provided with a connecting plate 101, one end of which is hinged to the operating pressure rod 1, and the other end is hinged to the base 4; the bottom is provided with a joint cylinder 5, the inner wall of which is provided with a sliding groove 51, which extends from the joint cylinder 5 to the base 4; the tooth-shaped pusher 2 is in sliding connection with the sliding groove 51. The operating pressure rod 1 is provided with a longitudinal pressure head 11, and the top of the base 4 is provided with a through hole 41 communicating with the joint cylinder 5, and the longitudinal pressure head 11 is inserted into the through hole 41. The bottom of the joint cylinder 5 is provided with a sleeve cylinder 6, and the base 4, the joint cylinder 5 and the sleeve cylinder 6 are integrally formed, and the sleeve cylinder 6 is provided with an end face bearing 61. The connecting plate 101 connects the operating pressure rod 1 and the base 4, so that the longitudinal pressure head 11 of the operating pressure rod 1 can be stably arranged above the base 4; when the user lifts the operating pressure rod 1 away from one end of the base 4, the connecting plate 101 and the operating pressure rod 1 are connected as the base point, the longitudinal pressure head 11 is pressed downward through the through hole 41, and the tooth-shaped pusher 2 is pushed downward.

[0030] The self-resetting locking assembly 200 further comprises a reset element 21, a limiting table 32 is arranged around the locking piece 3, the reset element 21 is sleeved on the locking piece 3, the top of the reset element 21 abuts against the bottom of the limiting table 32, and the top of the limiting table 32 abuts against the end face bearing 61. The end face bearing 61 is used to ensure the smooth rotation of the locking piece 3 relative to the base 4, and the limiting table 32 can separate the end face bearing 61 and the reset element 21, so that the end face bearing 61 and the reset element 21 can be positioned in the working position, so as to realize the rotation of the locking piece 3. When the locking piece 3 completes the rotation, the longitudinal pressure head 11 is upward, the reset element 21 releases the deformation and recovers, at this time, the tooth-shaped pusher 2 also moves upward and resets in the upward pushing process of the reset element at the bottom of the locking piece 3, and waits for the next pressing work, so as to realize the step-by-step rotation of the locking piece 3. In the embodiment, the reset element 21 adopts a compression spring, and the operating pressure rod 1 presses the locking piece 3 once to rotate one step, and the step-by-step rotation performs the locking action in the clockwise direction.

[0031] The self-resetting locking assembly 200 further comprises a shell 7 sleeved on the outside of the sleeve cylinder, and the reset element 21 is arranged in the shell 7. The shell 7 wraps the reset element 21, so that it does not separate from the locking piece 3 to cause the self-resetting locking assembly 200 to fail. The shell 7 can be detachably connected to the sleeve cylinder. The shell 7 can be threadedly connected to the sleeve cylinder, and after the shell 7 is detached, the internal parts can be replaced and repaired.

[0032] Embodiment 2

[0033] Different from the embodiment 1, the locking member 3 in this embodiment has different structure, the inclined edge structure 33 on the upper part of the engaging convex rib 31 is arranged from the right upper to the left lower, after the locking member 3 is replaced into the shell 7, through the operation of the pressing rod 1, when the toothed pushing member 2 pushes the locking member 3, the locking member 3 rotates counterclockwise, the locked bolt can be loosened, thus the bolt is disassembled.

[0034] In addition to the above embodiments, within the scope disclosed in the claims and the specification of the present application, the technical features of the present application can be reselected and combined to form new embodiments, which can be realized by those skilled in the art without creative labor, therefore these embodiments of the present application which are not described in detail should be considered as specific embodiments of the present application and within the protection scope of the present application.

Claims

1. A bolt tightening tool, characterized in that, It includes a base assembly, an operating lever is movably mounted on the top of the base assembly, a toothed pusher is inserted into the bottom of the base assembly, and a self-resetting locking assembly is also provided below the base assembly, with a locking port at the bottom of the self-resetting locking assembly; The self-resetting locking assembly includes a locking member with a corresponding engaging protrusion on the locking member. The base assembly, in conjunction with the operating lever, pushes the toothed pusher. The toothed pusher abuts against the engaging protrusion and pushes the locking member to rotate around the center line. The base assembly includes a base with connecting plates on both sides. One end of the connecting plate is hinged to the operating lever, and the other end is hinged to the base.

2. The bolt tightening tool according to claim 1, characterized in that, The base has a connecting cylinder at its bottom, and the inner wall of the connecting cylinder has a sliding groove. The toothed pusher is slidably connected to the sliding groove.

3. A bolt tightening tool according to claim 2, characterized in that, The operating pressure rod is provided with a longitudinal pressure head, and the top of the base is provided with a through hole corresponding to the longitudinal pressure head, which is connected to the connecting cylinder. The longitudinal pressure head is inserted into the through hole.

4. A bolt tightening tool according to claim 2, characterized in that, The bottom of the connecting cylinder is provided with a fitting cylinder, and the base, connecting cylinder and fitting cylinder are integrally formed, with an end face bearing provided inside the fitting cylinder.

5. A bolt tightening tool according to claim 4, characterized in that, The self-resetting locking assembly also includes a reset element. A limiting platform is provided on the upper ring of the locking member. The reset element is sleeved on the locking member. The top of the reset element abuts against the bottom of the limiting platform. The top of the limiting platform abuts against the end face bearing.

6. A bolt tightening tool according to claim 1, characterized in that, The lower part of the toothed pusher has a sawtooth structure, and the upper edge of the engaging protrusion has a bevel structure, which abuts against the sawtooth structure.

7. A bolt tightening tool according to claim 5, characterized in that, The self-resetting locking assembly also includes a housing sleeved outside the sleeve cylinder, and the reset element is disposed inside the housing.

8. A bolt tightening tool according to claim 7, characterized in that, The housing is detachably connected to the sleeve.

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