Multifunctional wrench
By designing multi-functional plate handles, the stable tightening and loosening of bolts are achieved using contacts and springs, the problem of bolts being unable to be tightened or loosened in chemical experiments is solved, and the safety and convenience of experimental operations are improved.
Patent Information
- Application Number
- CN202421396801.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-06-19
AI Technical Summary
In chemistry experiment teaching and scientific research, the bolt fixing method is not able to be effectively tightened or loosened due to the mismatch of environmental conditions and handle specifications, causing the bolt to be deformed or fall off, which increases safety hazards.
A multi-functional plate handle is designed, including a fixed ring seat, a slide groove, a spring groove, a wrench slide and a fixed ring cover. The contact with the screw handle is contacted in pairs of contacts of different shapes, which increases friction and uses springs to reset the plate handle slide rod for easy operation.
It effectively overcomes the problem of bolts being unable to be tightened or loosened, and achieves stable tightening and loosening of bolts, improving the safety and convenience of experimental operations.
Smart Images
Figure CN222843988U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a commonly used tool in chemical and chemical engineering teaching experiments and scientific research, specifically a multi-functional wrench. Background Art
[0002] In chemical experimental teaching and scientific research, various fixing accessories are often needed to install experimental facilities in order to achieve experimental objectives. These accessories mostly use bolt fixing methods, such as duplex screws, Phillips head fasteners, and iron rings. One end of these bolts is usually covered with a resin handle of various shapes, such as parallel fine lines, symmetrical concave or convex, or vertical plate shape, to facilitate the operator in tightening and loosening the bolts. Due to factors such as environmental conditions affecting the smoothness of the bolt surface and the inconsistent size of the resin handles, it is difficult to tighten and loosen the bolts without specialized tools, which affects the fixing effect. If the bolts are not tightened, the facilities may deform or fall off during the experiment. When disassembling the facilities after the experiment, the fixing bolts are difficult to loosen. These reasons frequently lead to safety accidents, causing unnecessary impact on experimental teaching and scientific research. Utility Model Content
[0003] To address the aforementioned problems, this utility model discloses a multifunctional wrench.
[0004] The specific technical solution is as follows:
[0005] A multi-functional wrench is provided with a fixed ring seat. A sliding groove is formed on the side wall of the fixed ring seat, and a spring groove is provided on the upper end face of the fixed ring seat. The wrench slide rod is placed in the sliding groove, and the spring passes through the ring buckle on each wrench slide rod and is placed in the spring groove. A fixed ring cover covers the surface of the fixed ring seat on which the wrench slide rod and the spring are installed. The fixed ring seat and the fixed ring cover are fixed by screws. A pair of contacts with different shapes are provided at the end of the wrench slide rod near the inner ring of the fixed ring seat.
[0006] The intersection of the slide groove and the spring groove is chamfered.
[0007] The slide groove is radially arranged and circumferentially arranged in the side wall of the fixed ring seat with the center of the fixed ring seat as the center. The cross-section of the slide groove is rectangular, and the depth of the cross-section of the slide groove is equal to the sum of the thickness of the wrench slide bar and the depth of the spring groove.
[0008] The spring groove is annular and is located above the annular groove.
[0009] The end of the wrench slide bar is provided with a handle.
[0010] The fixing ring cover is circular in shape. The inner and outer ring dimensions of the fixing ring cover are the same as the inner and outer ring dimensions of the fixing ring seat. The fixing ring cover has a raised edge and a baffle with the same width as the slide groove near the outer ring and the inner ring respectively. The raised edge and the baffle correspond to each other on the same radial line. The height of both is the same as the depth of the spring groove. A notch is provided between the raised edge and the baffle.
[0011] The advantages of this invention are: when the relative wrench slide bar is compressed, the contact point on the selected wrench slide bar comes into contact with the parallel fine lines, symmetrical protrusions or depressions, and the handle structure perpendicular to the plate shape of the fixing accessory, increasing the contact friction. By utilizing the length of the wrench slide bar, the torque is increased, overcoming the problem of the fastening bolts being unable to be tightened or loosened due to the handle on the fastening bolt being unable to exert force or the surface being rough. This achieves the purpose of tightening and loosening the bolts. Through the action of the spring, the compressed wrench slide bar handle is reset, making it convenient for the experimental operator to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the overall structure of the utility model;
[0013] Figure 2 Top view of the wrench slide bar and spring mounted on the retaining ring seat;
[0014] Figure 3 For fixing the ring cover 180 0 A schematic diagram of a flipped 3D structure;
[0015] Figure 4 This is a schematic diagram of the three-dimensional structure of the fixed ring seat;
[0016] Figure 5 for Figure 4 AA sectional view. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0018] A multi-functional wrench includes a fixed ring seat 2 with a sliding groove 8 on its side wall and a spring groove 9 on its upper end face. A wrench slide rod 5 is placed in the sliding groove 8, and a spring 6 passes through the ring buckle 7 on each wrench slide rod 5 and is placed in the spring groove 9. A fixed ring cover 1 covers the surface of the fixed ring seat 2 on which the wrench slide rod 5 and the spring 6 are installed. The fixed ring seat 2 and the fixed ring cover 1 are fixed by screws. A pair of contacts 4 with different shapes are provided at one end of the wrench slide rod 5 near the inner ring of the fixed ring seat 2.
[0019] The intersection 9a of the slide groove 8 and the spring groove 9 is chamfered.
[0020] The slide groove 8 is radially arranged around the center of the fixed ring seat 2, and is arranged in a circular array in the side wall of the fixed ring seat 2. The cross-section of the slide groove 8 is rectangular, and the depth a of the cross-section of the slide groove 8 is equal to the sum of the thickness c of the wrench slide bar 5 and the depth b of the spring groove 9, that is, a = b + c.
[0021] The spring groove 9 is annular and is located above the slide groove 8.
[0022] The end of the wrench slide bar 5 is provided with a handle 3.
[0023] The fixing ring cover 1 is circular in shape. The inner and outer ring dimensions of the fixing ring cover 1 are the same as the inner and outer ring dimensions of the fixing ring seat 2. The fixing ring cover 1 is provided with a protruding edge 11 and a baffle 10 with the same width as the slide groove 8 near the outer ring and the inner ring respectively. The protruding edge 11 and the baffle 10 correspond to each other on the same radial line. The height of both is the same as the depth b of the spring groove 9. A notch 12 is provided between the protruding edge 11 and the baffle 10.
[0024] The working principle of this utility model is as follows: First, according to the shape of the screw handle on the fixed accessory (the accessory that needs to be tightened or loosened), select the two opposite contacts 4 on the multi-functional wrench, grip the handle 3 where the compression contact 4 is located, and move the wrench slide 5 to bring the contact 4 on the wrench slide 5 into contact with the protrusion or recess on the screw handle of the fixed accessory. The contact between the contact 4 and the protrusion or recess on the screw handle of the fixed accessory increases the friction between them, and the length of the wrench slide 5 increases the torque to tighten or loosen the fixed accessory. During the movement of the wrench slide 5, the spring 6 is stretched. After the operation is completed, release the gripping force on the compression handle 3, and the wrench slide 5 returns to its original position under the action of the spring 6 contraction force, thus achieving the purpose of tightening or loosening the fixed accessory.
Claims
1. A multifunctional wrench, characterized in that: A fixed ring seat is provided, a sliding groove is provided on the side wall of the fixed ring seat, a spring groove is provided on the upper end surface of the fixed ring seat, the wrench slide is placed in the sliding groove, the spring passes through the ring buckles on each wrench slide and is placed in the spring groove, the fixed ring cover covers the surface of the fixed ring seat on which the wrench slide and the spring are installed, the fixed ring seat and the fixed ring cover are fixed by screws, and a pair of contacts with different shapes are provided at one end of the wrench slide close to the inner ring of the fixed ring seat.
2. The multifunctional wrench according to claim 1, characterized in that: The intersection of the slide groove and the spring groove is chamfered.
3. The multifunctional wrench according to claim 1, characterized in that: The slide groove is in a radial state, with the center of the fixed ring seat as the center, and is arranged in a circular array in the side wall of the fixed ring seat. The cross section of the slide groove is rectangular, and the depth of the cross section of the slide groove is equal to the sum of the thickness of the wrench slide rod and the depth of the spring groove.
4. The multifunctional wrench according to claim 1, characterized in that: The spring groove is annular and is arranged above the annular groove.
5. The multifunctional wrench according to claim 1, characterized in that: The end of the wrench slide rod is provided with a rod handle.
6. The multifunctional wrench according to claim 1, characterized in that: The fixed ring cover is in a circular shape as a whole, and the inner and outer ring sizes of the fixed ring cover are consistent with the inner and outer ring sizes of the fixed ring seat. The fixed ring cover is provided with a convex edge and a baffle plate consistent with the width of the slide groove close to the outer ring and the inner ring side respectively. The convex edge and the baffle plate correspond to each other on the same radial line, and the height of the two is consistent with the depth of the spring groove. A notch is provided between the convex edge and the baffle plate.