Novel wrench extension stress application rod

Abstract

The utility model discloses a novel wrench extension force-applying rod, which relates to the technical field of wrench auxiliary tools and comprises a fixed rod, a sliding ring and a movable rod, a sliding groove is arranged on the surface of the fixed rod, the sliding ring is sleeved in the sliding groove of the fixed rod, the tail end of the fixed rod is slidably mounted in the movable rod, and the movable rod is sleeved on the sliding ring. According to the wrench extension stress application rod, in the using process, when effective torque is not enough, the sliding block is matched with the sliding ring, the sliding groove and the clamping groove respectively through pushing and loosening under the action of the first spring, the second spring and the third spring, relative movement of the fixed rod and the movable rod is achieved, and therefore the wrench extension stress application rod can be used for wrench extension. Rapid locking and loosening between the sliding block and the fixed rod are completed, the purpose of rapidly adjusting the length of the stress application rod is achieved, use is very convenient, the telescopic design is adopted, carrying is convenient, and the structure is compact.

Description

Technical Field

[0001] The utility model relates to the technical field of wrench auxiliary tools, in particular to a novel extended force rod for a wrench. Background Art

[0002] A wrench is a commonly used installation and disassembly tool. It is a hand tool that uses the principle of leverage to twist bolts, screws, nuts and other threaded fasteners that tighten the openings or holes of bolts or nuts.

[0003] Since the size of the wrench is fixed, when using it, the bolts and nuts are often too firmly fixed and cannot be opened by just using the wrench. Therefore, a force rod needs to be added to the wrench. However, most of the existing force rods have a single structure and cannot be adjusted in length, which is very inconvenient to carry. Some force rods with adjustable length mostly adopt a splicing assembly structure or a telescopic structure with threaded locking or press-and-buckle locking, and the length adjustment is not quick and convenient enough. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a novel wrench extension force rod, which solves the technical problem that the length of the prior wrench extension force rod cannot be adjusted quickly and conveniently.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A new type of wrench extension force rod comprises a fixed rod, a sliding ring and a movable rod. A sliding groove is provided on the surface of the fixed rod, the sliding ring is sleeved in the sliding groove of the fixed rod, the end of the fixed rod is slidably installed in the movable rod, a No. 2 spring is fixedly connected between the sliding ring and the end of the fixed rod, a No. 1 spring is provided in the closed end of the movable rod, the end of the fixed rod is fixedly connected to the inner wall of the movable rod through the No. 1 spring, slots are provided on both side surfaces of the end of the fixed rod, and movable grooves are provided on both side inner walls of the movable rod, a sliding block adapted to the slot is slidably installed in each of the movable grooves, a No. 3 spring is movably sleeved on each of the sliding blocks, and each of the sliding blocks is fixedly connected to the inner wall of the movable groove through the No. 3 spring.

[0007] Preferably, the sliding ring can slide along the central axis of the fixed rod under the action of the second spring.

[0008] Preferably, one end of the fixing rod is provided with a sleeve which can be inserted into the wrench handle, and the sliding ring is in a trapezoidal columnar structure, with the smaller end facing the sleeve end of the fixing rod.

[0009] Preferably, each of the sliding blocks can slide back and forth in the movable groove along a direction perpendicular to the central axis of the fixed rod under the action of the No. 3 spring.

[0010] Preferably, each of the locking slots is respectively locked in one direction with the sliding block to prevent the fixed rod and the movable rod from separating.

[0011] The utility model has the following beneficial effects:

[0012] The wrench extends the force rod. During use, when the effective torque is insufficient, the wrench can be pushed and loosened. Under the action of the No. 1 spring, the No. 2 spring and the No. 3 spring, the sliding block cooperates with the sliding ring, the sliding groove and the clamping groove respectively to realize the relative movement of the fixed rod and the movable rod, and complete the rapid locking and loosening between the sliding block and the fixed rod, so as to achieve the purpose of rapid adjustment of the force rod length. The wrench is very convenient to use, the telescopic design is easy to carry and the structure is compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0014] Figure 1 This is a structural diagram of the entire extended force rod of the wrench of the utility model;

[0015] Figure 2 This is a structural diagram of the utility model using a sliding ring to release the locking state;

[0016] Figure 3 This is a structural diagram of the utility model after the fixed rod is extended.

[0017] Legend: 1. Fixed rod; 2. Sliding ring; 3. Sliding block; 4. Movable rod; 5. Slot; 6. Spring No. 1; 7. Spring No. 2; 8. Spring No. 3; 9. Movable slot; 10. Sliding slot; 11. Sleeve. DETAILED DESCRIPTION

[0018] The embodiment of the present application effectively solves the problem that the length adjustment of the existing wrench extension force rod is not quick and convenient enough by providing a new type of wrench extension force rod. During the use of the new type of wrench extension force rod, when the effective torque is insufficient, the sliding block is pushed and loosened under the action of the No. 1 spring, the No. 2 spring, and the No. 3 spring, respectively, to achieve relative movement of the fixed rod and the movable rod, and complete the rapid locking and loosening between the sliding block and the fixed rod, thereby achieving the purpose of rapid adjustment of the force rod length. The use is very convenient, the telescopic design is easy to carry, and the structure is compact.

[0019] Example: Figure 1-3 As shown, the technical solution in the embodiment of the present application effectively solves the technical problem that the existing wrench extension force rod length adjustment is not quick and convenient. The overall idea is as follows:

[0020] In response to the problems existing in the prior art, the utility model provides a new type of wrench extension force rod, including a fixed rod 1, a sliding ring 2 and a movable rod 4. A sliding groove 10 is provided on the surface of the fixed rod 1, and the sliding ring 2 is sleeved in the sliding groove 10 of the fixed rod 1. The end of the fixed rod 1 is slidably installed in the movable rod 4. A No. 2 spring 7 is fixedly connected between the sliding ring 2 and the end of the fixed rod 1. A No. 1 spring 6 is provided in the closed end of the movable rod 4. The end of the fixed rod 1 is fixedly connected to the inner wall of the movable rod 4 through the No. 1 spring 6. A card groove 5 is provided on both side surfaces of the end of the fixed rod 1, and a movable groove 9 is provided on both side inner walls of the movable rod 4. A sliding block 3 adapted to the card groove 5 is slidably installed in each movable groove 9, and each sliding block 3 is movably sleeved with a No. 3 spring Spring 8, each sliding block 3 is fixedly connected to the inner wall of the movable groove 9 by the third spring 8, and the sliding ring 2 can slide along the central axis direction of the fixed rod 1 under the action of the second spring 7. A sleeve 11 that can be inserted into the wrench handle is provided at one end of the fixed rod 1. The sliding ring 2 has a trapezoidal columnar structure, and the smaller end faces the sleeve 11 end of the fixed rod 1. Each sliding block 3 can slide back and forth in the movable groove 9 in a direction perpendicular to the central axis of the fixed rod 1 under the action of the third spring 8. Each card slot 5 is respectively locked with the sliding block 3 in a one-way manner to prevent the fixed rod 1 and the movable rod 4 from separating. The elastic force of the second spring 7 is much smaller than that of the first spring 6 and the third spring 8. Before use, the fixed rod 1 is sleeved in the movable rod 4, and the sliding block 3 of the movable rod 4 is aligned with the fixed rod 1 The edges of the sliding grooves 10 are clamped tightly, so that the force rod cannot be extended. At this time, the sleeve 11 can be directly put on the wrench handle to be used as a force rod. When the effective torque is insufficient, the movable rod 4 is pushed to move in the direction of the sleeve 11 of the fixed rod 1, and the No. 1 spring 6 is squeezed and deformed. The sliding block 3 moves outward along the movable groove 9 under the squeezing action of the sliding ring 2, and the No. 3 spring 8 is squeezed and deformed until it passes over the sliding ring 2. The sliding block 3 is reset, and the No. 3 spring 8 quickly recovers its length. At this time, the external force pushing the movable rod 4 is removed, and the squeezed and deformed No. 1 spring 6 quickly recovers its length, causing the movable rod 4 to move in the opposite direction of the sleeve 11 of the fixed rod 1. During the movement, the sliding block 3 slowly moves outward along the movable groove 9 again under the squeezing action of the sliding ring 2 and enters the movable groove 9. , the third spring 8 is squeezed and deformed, and at the same time drives the sliding ring 2 to move in the opposite direction of the sleeve 11 of the fixed rod 1. The second spring 7 is squeezed and deformed until the sliding ring 2 moves to the maximum stroke, and the sliding block 3 also completely enters the movable groove 9 and passes the sliding ring 2. The two sliding blocks 3 are clamped on the fixed rod 1, and the second spring 7 restores its length to reset the sliding ring 2. The movable rod 4 continues to slide in the opposite direction of the sleeve 11 of the fixed rod 1 under the action of inertia until the sliding block 3 falls into the slot 5 of the fixed rod 1. The third spring 8 restores its length, and the relative movement stops. The fixed rod 1 and the movable rod 4 complete the one-way locking, and the force rod cannot continue to extend. At this time, the lengthened force rod can be used normally. After use, push the movable rod 4 to move in the direction of the sleeve 11 of the fixed rod 1.The sliding block 3 moves out of the card slot 5 and enters the movable slot 9 under the extrusion of the fixed rod 1. The third spring 8 is squeezed and deformed, and slides together with the movable rod 4 toward the sleeve 11 of the fixed rod 1 until the sliding block 3 falls into the sliding slot 10. When the sliding block 3 is reset again and is not squeezed by the sliding ring 2, the movable rod 4 completes a one-way locking through the sliding block 3 and the edge of the sliding slot 10 of the fixed rod 1. The force rod cannot continue to extend. When the external force is removed, the force rod returns to its original shape. Through the ingenious design of the mechanism, only two actions, one push and one release, are performed. Under the action of the first spring 6, the second spring 7, and the third spring 8, the sliding block 3 cooperates with the sliding ring 2, the sliding slot 10, and the card slot 5 respectively to realize the relative movement of the fixed rod 1 and the movable rod 4, completing the rapid locking and loosening between the sliding block 3 and the fixed rod 1, so as to achieve the purpose of rapid adjustment of the length of the force rod. It is very convenient to use, the telescopic design is easy to carry, and the structure is compact.

[0021] Working principle:

[0022] In the first step, the elastic force of the No. 2 spring 7 is much smaller than that of the No. 1 spring 6 and the No. 3 spring 8. Before use, the fixed rod 1 is sleeved in the movable rod 4, and the sliding block 3 of the movable rod 4 is clamped with the edge of the sliding groove 10 of the fixed rod 1, so that the force rod cannot be extended. At this time, it can be directly sleeved on the wrench handle through the sleeve 11 and used as a force rod. When the effective torque is insufficient, the movable rod 4 is pushed to move in the direction of the sleeve 11 of the fixed rod 1, and the No. 1 spring 6 is squeezed and deformed. The sliding block 3 moves outward along the movable groove 9 under the squeezing action of the sliding ring 2, and the No. 3 spring 8 is squeezed and deformed until it passes over the sliding ring 2, and the sliding block 3 is reset. The No. 3 spring 8 quickly recovers its length. At this time, the external force pushing the movable rod 4 is removed, and the squeezed and deformed No. 1 spring 6 quickly recovers its length, causing the movable rod 4 to move in the opposite direction of the sleeve 11 of the fixed rod 1. During the movement, the sliding block 3 slowly moves outward along the movable groove 9 again under the squeezing action of the sliding ring 2 and enters the movable groove 9. The No. 3 spring 8 is squeezed and deformed, and at the same time, the sliding ring 2 is driven to move in the opposite direction of the sleeve 11 of the fixed rod 1. The No. 2 spring 7 is squeezed and deformed until the sliding ring 2 moves to the maximum stroke, and the sliding block 3 also completely enters the movable groove 9 and passes over the sliding ring 2. The two sliding blocks 3 are clamped on the fixed rod 1, and the No. 2 spring 7 restores its length to reset the sliding ring 2. The movable rod 4 continues to slide in the opposite direction of the sleeve 11 of the fixed rod 1 under the action of inertia until the sliding block 3 falls into the slot 5 of the fixed rod 1, and the No. 3 spring 8 restores its length, the relative movement stops, the fixed rod 1 and the movable rod 4 complete the one-way locking, and the force rod cannot continue to extend. At this time, the lengthened force rod can be used normally.

[0023] The second step is Figure 3When the cam 11 is released, the sliding block 3 is released, and the sliding block 3 is in the sliding groove 10 of the fixed rod 1. The cam 11 is in the sliding groove 10 of the fixed rod 1, and the sliding block 3 is reset again. When the cam 11 is released, the sliding block 3 is released, and the sliding groove 10 of the fixed rod 1 is reset again. When the cam 11 is released, the sliding block 3 is reset, and the sliding block 3 is reset again. When the cam 11 is released, the sliding block 3 is reset, and the sliding groove 10 of the fixed rod 1 is reset, and the cam 11 is reset, and the cam 11 is reset, and the cam 11 is reset, and the cam 11 is reset, and the cam 11 is reset

[0024] Finally, it should be noted that the above embodiments are merely examples for the purpose of illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to provide an exhaustive list of all possible embodiments. However, any obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A novel wrench extension force rod, comprising a fixed rod (1), a sliding ring (2) and a movable rod (4), characterized in that: The surface of the fixed rod (1) is provided with a sliding groove (10), the sliding ring (2) is sleeved in the sliding groove (10) of the fixed rod (1), the end of the fixed rod (1) is slidably mounted in the movable rod (4), a No. 2 spring (7) is fixedly connected between the sliding ring (2) and the end of the fixed rod (1), a No. 1 spring (6) is provided in the closed end of the movable rod (4), and the end of the fixed rod (1) is fixedly connected to the inner wall of the movable rod (4) through the No. 1 spring (6); Wherein, both side surfaces of the end of the fixed rod (1) are provided with a card slot (5), and both side inner walls of the movable rod (4) are provided with a movable slot (9), and a sliding block (3) adapted to the card slot (5) is slidably installed in each movable slot (9), and each sliding block (3) is movably sleeved with a No. 3 spring (8), and each sliding block (3) is fixedly connected to the inner wall of the movable slot (9) through the No. 3 spring (8).

2. The novel wrench extension force rod according to claim 1 is characterized in that: The sliding ring (2) can slide along the central axis direction of the fixed rod (1) under the action of the second spring (7).

3. The novel wrench extension force rod according to claim 1 is characterized in that: One end of the fixing rod (1) is provided with a sleeve (11) which can be inserted into a wrench handle.

4. The novel wrench extension force rod according to claim 3 is characterized in that: The sliding ring (2) has a trapezoidal columnar structure, with the smaller end facing the sleeve (11) end of the fixed rod (1).

5. The novel wrench extension force rod according to claim 1 is characterized in that: Each of the sliding blocks (3) can slide back and forth in the movable groove (9) along a direction perpendicular to the central axis of the fixed rod (1) under the action of the third spring (8).

6. The novel wrench extension force rod according to claim 1 is characterized in that: Each of the locking slots (5) is respectively locked in a one-way manner with the sliding block (3) to prevent the fixed rod (1) and the movable rod (4) from separating.

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