Safe screwdriver
By adopting a spring mechanism and a cross-plum tip design in the screwdriver, the problems of self-tapping deviation and stabbing are solved, achieving a more stable and safe operation process.
Patent Information
- Application Number
- CN202421739382.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-22
AI Technical Summary
When used, the existing screwdriver may easily deviate from the predetermined position, resulting in unstable installation, and may easily stab the operator's finger when the self-tapping side is crooked.
A safety screwdriver is designed, using a spring mechanism to fix the self-tapping to ensure that it does not deviate from the predetermined position during screwing, and increases bite force through the cross-plum-shaped design of the tip of the knife, reducing slippage.
It effectively improves the stability of self-tapping during the screwing process, reduces operation risks, avoids finger stabbing, and improves operation convenience and efficiency.
Smart Images
Figure CN222791880U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of screwdrivers, and in particular relates to a safety screwdriver. Background Art
[0002] A screwdriver is a tool used to turn a screw to put it in place. It is mainly composed of a handle and a shank. The end of the shank is a metal head that matches the shape of the screw head slot. Depending on the shape of the screw slot, screwdrivers are divided into many types, the most common of which are flat-blade screwdrivers and cross-blade screwdrivers.
[0003] At present, the operation method of a screwdriver is usually: hold the self-tapping screw with one hand, align the self-tapping screw with the hole to be fixed, and turn the screwdriver with the other hand, applying downward pressure while rotating the screwdriver to fix the self-tapping screw in place. There are some safety hazards in this operation. The self-tapping screw is easy to deviate from the predetermined position during the screwing process, resulting in unstable installation. When the self-tapping screw is tilted, it is easy to stab the operator's fingers.
[0004] Therefore, a safety screwdriver is proposed. Utility Model Content
[0005] The utility model aims to provide a safety screwdriver with a safe use function, which solves the problem that when the prior art screwdriver is used, the self-tapping thread is easy to deviate from the predetermined position during the screwing process, resulting in unstable installation, and when the self-tapping thread is tilted, it is easy to stab the operator's fingers.
[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: the utility model provides a safety screwdriver, including a handle, a knife bar is arranged on the top of the handle, a front fixing sleeve is sleeved on the front end of the knife bar, the rear side of the front fixing sleeve is connected to a fixing plate, a rear fixing sleeve is arranged on the fixing plate, the rear fixing sleeve is sleeved on the knife bar, a spring is arranged on the front side of the rear fixing sleeve, the spring is sleeved on the knife bar, a connecting block is arranged on the knife bar, and the connecting block is fixedly connected to the top of the spring.
[0007] Preferably, the top of the knife rod is arranged as a knife tip, and the knife tip cuts into a cross plum blossom shape.
[0008] Preferably, the front fixing sleeve and the rear fixing sleeve are connected to the fixing plate by welding.
[0009] Preferably, the central groove at the front end of the fixing plate is bent inwardly, and the groove accommodates the knife rod to pass through.
[0010] Compared with the prior art, the advantages and positive effects of the utility model are:
[0011] 1. The spring of the utility model is not subjected to stress in a free state, but is in a stressed state during use. When operating, it is only necessary to place the self-tapping screw at the notch. The operation is convenient and quick, which can effectively improve work efficiency and reduce safety risks.
[0012] 2. The utility model has a safe use function, which solves the problem that the self-tapping screw of the prior art screwdriver is easy to deviate from the predetermined position during the screwing process, resulting in unstable installation, and when the self-tapping screw is tilted, it is easy to stab the operator's fingers. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.
[0014] Figure 1 The figure is a structural diagram of a safety screwdriver;
[0015] In the above figure, 1, handle, 2, knife rod, 3, knife tip, 4, front fixing sleeve, 5, fixing plate, 6, rear fixing sleeve, 7, spring, 8, connecting block. DETAILED DESCRIPTION
[0016] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0017] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.
[0018] Embodiment 1, as Figure 1 As shown, a safety screwdriver includes a handle 1, which is the main operating part of the screwdriver and is designed to provide comfortable grip and good maneuverability. The shape and material design of the handle 1 are ergonomic, reducing fatigue during long-term use. The surface of the handle 1 is provided with anti-slip stripes to ensure that the hand is not easy to slip during operation, thereby improving safety. A shank 2 is provided on the top of the handle 1, and the shank 2 is connected to the handle 1 to transmit the rotational force. The shank 2 is made of high-strength alloy steel, which is wear-resistant and twist-resistant, and has good rigidity and toughness, ensuring that it is not easy to break when a large torque is applied.
[0019] The front end of the knife bar 2 is sleeved with a front fixing sleeve 4, which can slide on the knife bar 2 and play a limiting role. The rear side of the front fixing sleeve 4 is connected to the fixing plate 5, and the fixing plate 5 is provided with a rear fixing sleeve 6. The rear fixing sleeve 6 plays a fixing and guiding role. The fixing plate 5 connects the front fixing sleeve 4 and the rear fixing sleeve 6 as a whole. The rear fixing sleeve 6 is sleeved on the knife bar 2 and can slide. A spring 7 is provided on the front side of the rear fixing sleeve 6. The spring 7 has elastic potential energy and can be deformed when subjected to force, and can be restored when not subjected to force, thereby playing a limiting role to clamp the self-tapping screw and protect the safety of fingers.
[0020] The spring 7 is fixedly connected to the rear fixing sleeve 6, and the spring 7 is sleeved on the knife bar 2. The knife bar 2 is provided with a connecting block 8, and the connecting block 8 is fixedly connected to the top of the spring 7. The connecting block 8 provides a firm connection between the spring 7 and the knife bar 2 to ensure that the spring 7 can function normally. Ensure concentricity when welding the front fixing sleeve 4 and the rear fixing sleeve 6.
[0021] The following is a detailed description of the design of the above key components:
[0022] The top of the tool rod 2 is set with a tool tip 3, and the tool tip 3 has a magnetic effect. The tool tip 3 is cut into a cross plum blossom shape. The cross plum blossom design increases the contact area between the tool tip 3 and the screw groove, ensures better bite force and torque transmission, helps to reduce slippage, and is suitable for cross screws.
[0023] The spring 7 is 0-3 mm larger than the diameter of the knife rod 2, and the spring 7 can slide on the outside of the knife rod 2, which is convenient for pulling the spring 7 and restoring it.
[0024] The front fixing sleeve 4 and the rear fixing sleeve 6 are welded to the fixing plate 5, and the welding connection ensures a firm connection between the front fixing sleeve 4 and the rear fixing sleeve 6 and the fixing plate 5, provides a firm structural support, and reduces the risk of loosening and falling off.
[0025] The center groove at the front end of the fixing plate 5 is bent inwards, and the groove accommodates the knife bar 2 to pass through. The groove design provides a fixing and guiding function to ensure that the movement trajectory of the knife bar 2 is accurate and does not deviate from the direction. The front end of the fixing plate 5 is bent to form an arc. When in use, the fixing plate 5 is pulled to compress the spring 7, and the self-tapping screw is placed at the front end of the knife tip 3. The self-tapping screw is fixed on the knife tip 3 by the elastic force of the spring 7 restored by bending the front end of the fixing plate 5, which plays a role in stabilizing the self-tapping screw, and there is no need to protect the fingers of the staff by hand.
[0026] The standard parts used in the utility model can all be purchased from the market, special-shaped parts can be customized according to the description in the specification and the drawings, the specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art, the machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.
[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.
Claims
1. A safety screwdriver, comprising a handle, a tool bar is arranged on the top of the handle, characterized in that: The front end of the knife rod is sleeved with a front fixing sleeve, the rear side of the front fixing sleeve is connected to the fixing plate, the fixing plate is provided with a rear fixing sleeve, the rear fixing sleeve is sleeved on the knife rod, the front side of the rear fixing sleeve is provided with a spring, the spring is sleeved on the knife rod, the knife rod is provided with a connecting block, and the connecting block is fixedly connected to the top of the spring.
2. A safety screwdriver according to claim 1, characterized in that: The top of the knife rod is arranged as a knife tip, and the knife tip cuts into a cross plum blossom shape.
3. A safety screwdriver according to claim 1, characterized in that: The front fixing sleeve and the rear fixing sleeve are connected to the fixing plate by welding.
4. A safety screwdriver according to claim 1, characterized in that: The center of the front end of the fixing plate is slotted and bent inwardly, and the slot accommodates the knife rod to pass through.