Anti-scald cover shell of electric screwdriver
By designing an electric screwdriver anti-scalding case, using the combined structure of the head shell and the cabinet and the ventilation hole design, the problem of the electric screwdriver easily burning is solved, achieving better heat barrier and heat dissipation effect, and improving user safety and comfort.
Patent Information
- Application Number
- CN202421662094.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-07-12
AI Technical Summary
When the existing electric screwdriver is continuously working, the head shell part is prone to burn to the user, and the existing anti-scalding measures are not effective.
An electric screwdriver anti-scalding cover is designed. By covering the rear of the head shell in the case and forming a protrusion at the front, the head shell cover and sheath are put on the head shell to increase heat barrier, and a vent hole and air guide plate are provided on the case to enhance the heat dissipation effect.
It effectively blocks the heat in the head shell of the electric screw bit to prevent the user from being scalded during continuous work, greatly improving the user's feel.
Smart Images
Figure CN222779491U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of electric screwdrivers, and in particular relates to an anti-scalding cover shell for an electric screwdriver. Background Art
[0002] At present, electric screwdrivers are one of the best-selling products in the power tool industry. Electric screwdrivers are also called electric screwdrivers. They rely on electric current to control the rotation of the motor. When tightening the screws, the torque reaches the set value and the machine stops automatically. The screws can be quickly tightened to the set torque and are widely used in construction, decoration, furniture and other industries.
[0003] When the screws are continuously tightened with an electric screwdriver, the heat generated by the motor accumulates in the shell and is transferred to the outer surface of the shell, especially the head shell part. The head shell part is the part that the user often touches when using the electric screwdriver. The user is easily burned when touching the heated head shell part. The existing electric screwdrivers only add a rubber sleeve to the front end of the head shell, which only covers the front end of the head shell. The coverage area is small and the anti-scalding effect is poor. Utility Model Content
[0004] The utility model aims to provide an anti-scalding cover shell of an electric screwdriver, so as to solve the technical problem that the head shell of the existing electric screwdriver is easy to scald the user when the screwdriver works continuously.
[0005] In order to solve the above technical problems, the utility model provides an anti-scalding cover for an electric screwdriver, comprising: a head shell, the rear of which is covered by a casing to form a protrusion protruding from the casing; the protrusion is sequentially covered with a head shell cover and a sheath from back to front, and the head shell cover and the sheath together cover the protrusion.
[0006] Furthermore, a plurality of ventilation holes are provided on the casing at a partition plate arranged at a boundary between the casing and the head casing.
[0007] Furthermore, the partition is provided with air passages facing the corresponding vents; and each air passage is provided with an air guide plate on one side close to the center of the partition.
[0008] Furthermore, the air guide plate is an arc-shaped plate and faces the center of the partition.
[0009] Furthermore, a baffle separated from the hole opening is provided on the inner wall of the vent hole.
[0010] Furthermore, the horizontal length of the portion of the protrusion covered by the sheath is L1, the horizontal length of the portion of the protrusion covered by the head shell cover is L2, and the horizontal length of the portion of the head shell covered by the housing is L3; the ratio of L1:L2:L3 is 8~12:20~30:20~30.
[0011] Furthermore, the ratio of L1:L2:L3 is 10:24:23.
[0012] The beneficial effect of the utility model is that the utility model aims to solve the technical problem that the head shell of the existing electric screwdriver is easy to burn the user when working continuously. The rear part of the head shell in the anti-scalding cover shell of the electric screwdriver is covered by the casing, and the front part protrudes from the casing to form a protrusion. Even if the heat generated in the cavity of the head shell makes the head shell hot, the head shell is covered with a head shell cover and a sheath outside the head shell, which can further block the heat. The electric screwdriver will not burn the user when working continuously, and the user's hand feel is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the prior descriptions will be briefly introduced below. Obviously, the drawings in the following description are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0014] Figure 1 This is a schematic diagram of the structure of the anti-scalding cover of the electric screwdriver of the utility model. Figure 1 ;
[0015] Figure 2 The utility model is a cross-sectional view of the anti-scalding cover of the electric screwdriver Figure 1 ;
[0016] Figure 3 yes Figure 1 The enlarged view of point A in the middle;
[0017] Figure 4 This is a schematic diagram of the structure of the anti-scalding cover of the electric screwdriver of the utility model. Figure 2 ;
[0018] Figure 5 yes Figure 4 The enlarged view of point B in the middle;
[0019] Figure 6 The utility model is a cross-sectional view of the anti-scalding cover of the electric screwdriver Figure 2 ;
[0020] In the figure:
[0021] Head shell 100, protrusion 110,
[0022] Housing 200, vent hole 210, baffle 220,
[0023] Head shell cover 300,
[0024] Sheath 400,
[0025] Partition 500 , air duct 510 , and air guide plate 520 . DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments of ordinary technicians in this field without creative work are within the protection scope of the utility model.
[0027] Example
[0028] like Figure 1 and Figure 2 As shown, the utility model provides an anti-scalding cover for an electric screwdriver, comprising: a head shell 100, the rear portion of which is covered by a housing 200 to form a protrusion 110 protruding from the housing 200; the protrusion 110 is sequentially covered with a head shell cover 300 and a sheath 400 from back to front, and the head shell cover 300 and the sheath 400 together cover the protrusion 110.
[0029] The rear of the head shell 100 in the anti-scalding cover of the electric screwdriver is covered by the casing 200, and the front part protrudes from the casing 200 to form a protrusion 110. Even if the heat generated in the cavity of the head shell 100 makes the head shell 100 hot, the head shell 100 is also covered with a head shell cover 300 and a sheath 400, which can further block the heat. The electric screwdriver will not burn the user when working continuously, which greatly improves the user's hand feel.
[0030] like Figure 2 and Figure 4 ,as well as Figure 3 As shown, a plurality of ventilation holes 210 are provided on the housing 200 at the partition 500 disposed at the boundary between the housing 200 and the head housing 100 .
[0031] like Figure 5 and Figure 3 As shown, the partition 500 is provided with air passages 510 facing the corresponding vent holes 210 ; each air passage 510 is provided with an air guide plate 520 on one side close to the center of the partition 500 .
[0032] like Figure 4 and Figure 5 As shown, the air guide plate 520 is an arc-shaped plate and faces the center of the partition 500.
[0033] refer to Figure 2 and Figure 6The partition 500 is necessary for installing the motor flange, torque groove and inner shaft of the electric screwdriver. These components together with the partition 500 will separate the cavity of the casing 200 behind the partition 500 from the cavity of the head casing 100. The casing 200 is provided with a motor in the cavity behind the partition 500. The fan blades rotating with the motor can continuously blow out the air in the cavity of the casing 200 behind the partition 500 from the tail, and the air outside the electric screwdriver can continuously enter through the vent 210. By setting the air duct 510 and the air guide plate 520, the air can be guided to flow in the cavity of the casing 200 behind the partition 500 and flow through the inner part of the cavity, thereby enhancing the heat dissipation effect. The temperature of the cavity of the casing 200 behind the partition 500 is reduced, and the air is blocked by the partition 500 and the components thereon and cannot enter the cavity of the head shell 100. Therefore, the anti-scalding cover of the electric screwdriver is arranged so that the rear part of the head shell 100 is covered by the casing 200. The contact surface between the head shell 100 and the casing 200 is large. The heat generated in the cavity of the head shell 100 can also be transferred to the casing 200 through the head shell 100, thereby reducing the heat accumulated in the head shell 100. The temperature of the head shell 100 is relatively low during normal use. Even if the continuous working time is too long, the heat generated in the cavity of the head shell 100 makes the head shell 100 hot. The head shell 100 is also covered with a head shell cover 300 and a sheath 400 to block the heat.
[0034] like Figure 5 and Figure 3 As shown, a baffle 220 is provided on the inner wall of the vent hole 210 and is spaced apart from the hole opening to prevent external objects from directly poking into the interior.
[0035] like Figure 6 As shown, in order to ensure sufficient passive heat dissipation of the cavity of the head shell 100. The anti-scalding cover of the electric screwdriver is set as follows: the horizontal length of the portion of the protrusion 110 covered by the sheath 400 is L1, the horizontal length of the portion of the protrusion 110 covered by the head shell cover 300 is L2, and the horizontal length of the portion of the head shell 100 covered by the housing 200 is L3; the ratio of L1: L2: L3 is 8-12: 20-30: 20-30, so as to ensure that the head shell 100 transfers heat through the housing 200 in time.
[0036] Preferably, the ratio of L1:L2:L3 may be 10:24:23.
[0037] To sum up, the rear of the head shell 100 in the anti-scalding cover of the electric screwdriver is covered by the casing 200, and the front protrudes from the casing 200 to form a protrusion 110. Even if the heat generated in the cavity of the head shell 100 makes the head shell 100 hot, the head shell 100 is also covered with a head shell cover 300 and a sheath 400, which can further block the heat. The electric screwdriver will not scald the user when working continuously, which greatly improves the user's hand feel.
[0038] In the embodiments provided in this application, it should be understood that the disclosed systems and devices can be implemented in other ways. The embodiments described above are only exemplary. For example, the division of the mechanism is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.
[0039] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.
[0040] Based on the above ideal embodiments of the utility model, through the above description, relevant technicians can make various changes and modifications without departing from the technical concept of the utility model. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. An anti-scalding cover for an electric screwdriver, characterized in that: include: A head shell (100), the rear portion of which is covered by the housing (200) to form a protruding portion (110) protruding from the housing (200); The protruding portion (110) is covered with a head shell cover (300) and a protective sleeve (400) in sequence from back to front, and the head shell cover (300) and the protective sleeve (400) together cover the protruding portion (110).
2. The anti-scalding cover of the electric screwdriver according to claim 1, characterized in that: A plurality of ventilation holes (210) are provided on the casing (200) at a partition (500) disposed at a boundary between the casing (200) and the head casing (100).
3. The anti-scalding cover of the electric screwdriver according to claim 2, characterized in that: The partition plate (500) is provided with an air passage (510) facing the corresponding air vent (210); A wind guide plate (520) is provided on one side of each air passage (510) close to the center of the partition plate (500).
4. The anti-scalding cover of the electric screwdriver according to claim 3, characterized in that: The air guide plate (520) is an arc-shaped plate and faces the center of the partition plate (500).
5. The anti-scalding cover of the electric screwdriver according to claim 2, characterized in that: A baffle (220) is provided on the inner wall of the vent hole (210) and is spaced apart from the hole opening.
6. The anti-scalding cover of the electric screwdriver according to claim 2, characterized in that: The horizontal length of the portion of the protrusion (110) covered by the sheath (400) is L1, the horizontal length of the portion of the protrusion (110) covered by the head shell cover (300) is L2, and the horizontal length of the portion of the head shell (100) covered by the housing (200) is L3; The ratio of L1:L2:L3 is 8~12:20~30:20~30.
7. The anti-scalding cover of the electric screwdriver according to claim 6, characterized in that: The ratio of L1:L2:L3 is 10:24:23.