Finger protection cot
The aluminum finger protection cots with a cylindrical body and dome-shaped top, featuring a sweat vent hole and anti-slip surface, address the vulnerability of fingertips during tasks like steel tower assembly by providing comprehensive protection and flexibility, while ensuring ease of use and manufacturing efficiency.
Patent Information
- Application Number
- JP2025004371U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-12-18
- Publication Date
- 2026-02-16
- Estimated Expiration
- 2035-12-18
AI Technical Summary
Conventional finger protectors primarily protect the backs of fingers, leaving the fingertips exposed, which are vulnerable to injury during tasks like steel tower assembly where fingertips can be pinched between components.
A set of aluminum finger protection cots with a cylindrical body and dome-shaped top, featuring a sweat vent hole and anti-slip surface, are fitted loosely over the fingertip up to the first joint and secured with a glove, providing comprehensive fingertip coverage and protection.
The solution ensures easy fitting and removal, maintains fingertip flexibility, prevents pinching injuries, and reduces stuffiness, while maintaining workability and ease of manufacturing.
Smart Images

Figure 0003254790000001_ABST
Abstract
Description
[Technical Field]
[0001] This invention relates to an aluminum finger protection cot that protects the tips of a worker's fingers during work, such as tower assembly work. It is a set of five finger protection cots that are fitted over all fingertips and then worn with gloves. [Background technology]
[0002] Steel towers are made by combining steel materials, steel pipes, and other components, and are usually assembled from the bottom up. For large towers, the sections assembled on the ground are lifted by a crane and then attached by hand using bolts and nuts.
[0003] In such tower assembly work, many steps are performed manually by workers, and there is a risk of injury if the worker's fingertips are caught in the components. Therefore, it is desirable to use protective sleeves to protect the fingertips.
[0004] On the other hand, there are existing finger protection devices that protect the fingertips from injury, and it is conceivable to use these finger protection devices as finger protection sacks during work.
[0005] For example, Patent Document 1 discloses a finger protector that protects the back of the finger by connecting multiple curved plates in a bendable manner. This protects the entire finger by bending in accordance with the bending of the finger.
[0006] Patent Document 2 discloses a finger protector that prevents fingers from being cut when using a blade. This is a cylindrical body made of a hard material that has a finger protection surface that covers the back of the finger, a fingertip protection section, an opening that opens at the pad of the finger, a first slit that runs from the opening toward the insertion section, and a protrusion that protrudes along the edge of the opening toward the pad of the finger. This configuration reliably prevents the finger protector from accidentally slipping off the finger. [Prior art documents] [Patent documents]
[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-291405 [Patent Document 2] Japanese Patent Publication No. 2023-68753 Summary of the Invention [Problem to be solved by the invention]
[0008] However, since the above-mentioned conventional finger protectors are primarily intended to protect the backs of the fingers from blades such as knives, the pads of the fingers remain exposed.
[0009] Therefore, it was insufficient as a finger protector to prevent injury caused by the tips of fingers being pinched between components during steel tower assembly work, etc.
[0010] In view of the above problems, the object of the present invention is to provide a finger protection sack that can protect the entire circumference of the tip of the finger and prevent injury when it is pinched between components. [Means for solving the problem]
[0011] In order to achieve the above object, the finger protection sack according to the invention described in claim 1 is, for example, as shown in Figures 1 to 4, an aluminum finger protection sack that is fitted over the tip of a finger and then worn with a glove. The sack is characterized by having a cylindrical body that fits loosely over the entire tip area of the target finger up to the first joint, with the rear end opening being a finger insertion opening, and a dome-shaped top portion that is continuous with and closes the front end opening of the body. The top portion has a sweat vent hole in the center with a diameter of 5 to 6 mm that does not allow the tip of the finger to protrude, and the body further has an anti-slip area with a flare knurling finish around the entire surface area near the rear end opening.
[0012] According to the finger protection cot described in claim 1 of the present invention, the tip of the distal region up to the first joint of the finger on which the finger protection cot is worn is covered, and then the glove is put on and fixed in place.
[0013] More specifically, a finger protection sack worn on the thumb covers the area distal to the first joint, while a finger protection sack worn on other fingers covers the area distal to the second joint including the first joint, ensuring that the fingertip can bend without any problems.
[0014] Due to the above-mentioned structure, the finger protection sack of the present invention does not need to have a special shape like conventional ones to fit the corresponding finger. The main body has a simple structure of an approximately cylindrical shape that fits loosely around the tip of the finger and covers the entire circumference, and is also lightweight.
[0015] This makes it easy to insert and remove from the finger, and it can be attached without impairing the workability of the fingertip.It can also provide good protection for the entire periphery of the fingertip even if it is pinched by other components, and is easy to manufacture.
[0016] Furthermore, the main body of the finger protection sack has a sweat vent hole in the center of the roughly dome-shaped top that closes the front end opening, with a diameter that prevents the corresponding finger tips from protruding. This prevents stuffiness when worn for long periods of time together with the gloves, while also providing good protection for the finger tips by the top.
[0017] In practice, a diameter of 5 to 6 mm is suitable for the sweat vent hole, as this provides sufficient sweat venting effect and is also large enough that there is no risk of the fingertips of an average adult protruding from the sweat vent hole.
[0018] The finger protection sack with the above configuration is preferably one that can be worn on fingers that are frequently used in work, and it is preferable to use one that is large enough to fit at least the thumb and index finger at the same time. The inner diameter of the body and the overall length of the sack are appropriately set according to the finger to be fitted. Of course, safety can be further improved by fitting the same finger protection sack on other fingers as well.
[0019] The finger protection cot according to the invention described in claim 2 is, for example, a set of finger protection cots according to claim 1, which are fitted onto the tips of the corresponding five fingers, as shown in Figures 1, 3, and 4, and each finger protection cot is characterized in that the main body has an inner diameter that allows it to be loosely fitted onto the corresponding finger.
[0020] The finger protection cots described in claim 2 of the present invention are a set of finger protection cots that are worn on all five fingers, providing maximum safety by protecting all fingers during work. In this case, the inner diameter of each finger protection cot is set according to the thickness of the corresponding finger.
[0021] Furthermore, of the five fingers, the index finger, middle finger, and ring finger are all of approximately the same thickness, so a finger protection sack with an inner diameter and overall length corresponding to these three fingers can be used as the standard size.
[0022] If a finger protection sack for the thumb has an inner diameter and overall length corresponding to the thumb, but is thicker and shorter than the standard dimensions, and a finger protection sack for the little finger has an inner diameter and overall length corresponding to the little finger, but is thinner and shorter than the standard dimensions, then essentially, by preparing at least these three designs, it will be possible to accommodate all five fingers.
[0023] In this case, it is easier to manufacture the set of finger protection sacks as well as to use them in practice than when the design is changed in detail for each finger.
[0024] Furthermore, since the index finger is usually slightly thicker than the middle and ring fingers, the dimensions for the middle and ring fingers can be used as the standard, and a finger protection sack with a slightly larger inner diameter for the index finger can be set, resulting in a set of four types.
[0025] The finger protection sacks of this invention are fitted loosely onto the corresponding fingers and then gloves are put on over them, so even if they do not fit perfectly on each finger, they are held down by the gloves and will not come off during work.
[0026] Generally, work gloves are usually rubber-coated on the palm side, excluding the back of the hand, and the finger protection sacks that fit loosely around each finger inside the gloves are pressed against the fingers due to their elasticity, making them less likely to spin freely.
[0027] However, if the glove itself is large and there is room for the fingertips, the pressing force will be relatively small, and the glove may slip against the finger protection cot, which has a smooth surface.
[0028] Therefore, by providing an anti-slip area on at least a part of the surface area of the main body near the rear end opening, the contact surface of the glove becomes less likely to slip due to friction. Note that the wider this anti-slip area is, the greater the anti-slip effect, so it may be provided around the entire area of the main body surface near the rear end opening.
[0029] The anti-slip treatment may be a common one used for anti-slip treatment of aluminum surfaces, for example, knurling, which is a simple method. Knurling is a process in which a knurling tool is pressed against a workpiece being rotated on a lathe to create equally spaced grooves and impart fine irregularities to the metal surface. In particular, flare knurling is more suitable, as it forms diamond-shaped grooves on the circumference as the irregularities, i.e., flare, to provide an anti-slip effect in both the circumferential and axial directions.
[0030] The finger protection sack according to the invention described in claim 3 is characterized in that the main body has a thickness of 3.5 mm or more and 5.5 mm or less.
[0031] According to the finger protection sack of claim 3 of the present invention, although it is made of aluminum, the thickness of the body ensures sufficient strength against pinching. Furthermore, the outer diameter of the body of the finger protection sack is set not to be too large and excessively thick, which would reduce workability. Furthermore, since the risk of pinching itself is relatively low, the thickness of the approximately dome-shaped top portion is sufficient for the same thickness as the body, and it is not a problem if it is slightly thinner than the body.
[0032] A method for putting on a finger protection cot according to the present invention includes, for example, the steps of fitting the finger protection cot around the tip of a corresponding finger, and, after the finger protection cot has been fitted onto the tip of the corresponding finger, putting on a glove and covering the fingertip of the glove with the fingertip of the glove, as shown in Figures 3 and 4.
[0033] According to this method of wearing finger protection sacks, by putting finger protection sacks on the corresponding fingers and then wearing gloves, the finger protection sacks covered by the fingertips of the gloves are pressed down and essentially fixed in place.
[0034] Therefore, even if the finger protection sack of the present invention is not shaped to fit the target finger as in the past, but has a simple cylindrical shape that fits the finger relatively loosely, it still has the advantage of ensuring sufficient workability at the fingertips and being easy to insert and remove. [Effects of the Invention]
[0035] As explained above, the finger protection sack of the present invention is loosely fitted to cover the entire tip area of the target finger up to the first joint, and is then pressed down by wearing a glove on top of it, completing the fitting process. This makes it easy to put on and take off the finger, lightweight, and does not interfere with the bending movement of the fingertip. It also provides good protection for the entire tip of the finger so that it will not be injured if it gets caught by other parts, and is easy to manufacture. [Brief explanation of the drawings]
[0036] [Figure 1] 1 is a plan view of a finger protection sleeve set in accordance with an embodiment of the present invention; [Figure 2] FIG. 2 is a perspective view illustrating a basic configuration common to the finger protection cots shown in FIG. 1. [Figure 3] 2 is a plan view showing the state in which each finger protection sack shown in FIG. 1 is fitted on each target finger. FIG. [Figure 4] FIG. 4 is a plan view showing a state in which the finger protection sacks shown in FIG. 3 are fitted on the respective target fingers and work gloves are then worn. DETAILED DESCRIPTION OF THE INVENTION
[0037] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0038] <Embodiment> As one embodiment of the present invention, an aluminum finger protection cot set S that can be worn on all five fingers is shown in Figures 1 to 4. As shown in Figure 1, the finger protection cot set S in this embodiment is made up of five finger protection cots 1: finger protection cot 1A for the thumb A, finger protection cot 1B for the index finger B, finger protection cot 1C for the middle finger C, finger protection cot 1D for the ring finger D, and finger protection cot 1E for the little finger E.
[0039] The basic structure of each finger protection sack 1 (1A, 1B, 1C, 1D, 1E) is almost the same, except that the inner and outer diameters of the body and the overall length of the sack are appropriately set to correspond to the target finger of the hand. That is, as shown in Figure 2, finger protection sack 1 has a substantially cylindrical body 2 and a substantially dome-shaped top portion 3 that is provided continuously to close the front end opening of the body 2, and the rear end opening of body 2 is a finger insertion opening 4.
[0040] A sweat vent hole H is provided in the center of the top of the head 3. An anti-slip area 5 with fleur-de-lis knurling is provided on the outer surface of the main body 2 near the finger insertion opening 4 all around.
[0041] In this embodiment, the finger protection sacks (1C, 1D) for the middle finger C and the ring finger D have the same shape and dimensions, which are set as the standard dimensions of this set S. Here, the standard dimensions are an inner diameter of 18 mm and an outer diameter of 23 mm for the main body 2, while the finger protection sack 1B for the index finger B has an inner diameter of 19 mm and an outer diameter of 24 mm, which are set slightly larger than the standard dimensions.
[0042] The total length L of these finger protection sleeves (1B, 1C, 1D) for the index finger B, middle finger C, and ring finger D corresponds to the length covering the tip area distal to the second joint of an average adult male, and in this embodiment is approximately 4.5 cm.
[0043] In addition, the finger protection sack 1A for the thumb A is thicker than the standard dimensions, with the inner diameter of the main body 2 being 24 mm and the outer diameter being 28 mm, and the total length L of the sack up to the first joint being approximately 3.5 cm, which is shorter than the standard dimensions.
[0044] Furthermore, the finger protection sack 1E for the little finger E is thinner than the standard dimensions, with the main body 2 having an inner diameter of 16 mm and an outer diameter of 20 mm, and the total length L of the sack corresponds to the length of the tip region distal to the second joint of the little finger E, which in this embodiment is approximately 4.0 cm.
[0045] The sweat vent hole H drilled in the center of the top part 3 has a diameter of about 5 to 6 mm in this embodiment so that the tips of the fingers do not protrude from the sweat vent hole H. This sweat vent hole H effectively eliminates stuffiness while working after putting on the gloves.
[0046] The thickness of the main body 2 of each finger protection sack 1 is set to 4 to 5 mm. This thickness provides sufficient strength to protect the fingertips when they are pinched between components, while also being kept to a thickness that does not impair workability.
[0047] When each finger protection sack 1 (1A, 1B, 1C, 1D, 1E) of the finger protection sack set S in this embodiment, which has the above-mentioned configuration, is fitted onto the tip of the corresponding finger (A, B, C, D, E), it fits loosely and covers the fingertip in a manner that allows the fingertip to be bent without any problems, as shown in Figure 3.
[0048] When the work glove 10 is put on with the finger protection sacks (1A, 1B, 1C, 1D, 1E) loosely fitted on all the fingers (A, B, C, D, E), the finger protection sacks (1A, 1B, 1C, 1D, 1E) are pressed against the fingertips, completing the donning process.
[0049] At this time, due to the anti-slip effect of the anti-slip areas 5 provided on the surface of each finger protection sack (1A, 1B, 1C, 1D, 1E), the finger protection sacks (1A, 1B, 1C, 1D, 1E) do not spin freely inside the work glove 10, and workability is not reduced.
[0050] The finger protection sacks 1 according to the present embodiment as described above are set up with different sizes designed to fit each finger, but if a large number of each size are manufactured in advance, it is possible to individually replace only those that are damaged or lost, for example.
[0051] In practice, it is more efficient to design the body so that its inner diameter is slightly larger than the average thickness of each finger. In other words, it is sufficient to manufacture a finger holder for each average thickness for the thumb, little finger, index finger, middle finger, and ring finger.
[0052] It is conceivable that some workers have thicker or thinner fingers than average. Therefore, by manufacturing finger protection sleeves for various fingers, centering on average sizes, as well as thicker and thinner sizes, workers can select and wear a set of finger protection sleeves of the size that best suits their own fingers.
[0053] The finger protection sack of this invention is not designed to fit the finger perfectly, but has an inner diameter that allows it to fit loosely, and is set to a length that allows the fingertips to bend freely, so even if gloves are worn over it, it does not interfere with the workability of the fingertips and is excellent. [Industrial Applicability]
[0054] The finger protection cot of this invention is designed to protect the tips of the fingers to prevent injuries caused by being pinched between components during tower assembly work, but it can also be used to protect fingers during various tasks in various manufacturing industries, not just tower assembly work. [Explanation of symbols]
[0055] 1, 1A, 1B, 1C, 1D, 1E: Finger protection cot S: Finger protection sack set A: Thumb B: Index finger C: middle finger D: Ring finger E: Pinky finger 2: Main unit 3:Top of the head H: Sweat vent hole 4: Finger insertion hole 5: Anti-slip area 10 Work Gloves
Claims
1. An aluminum finger protection cot that is fitted to the tip of a finger and then worn with a glove, The device comprises a cylindrical body that is loosely fitted to cover the entire periphery of the tip region of the target finger up to the vicinity of the first joint, the rear end opening of which is a finger insertion opening, and a dome-shaped top portion that is provided continuously to close the front end opening of the body, The top of the head is provided with a sweat vent hole at the center, the hole being 5 to 6 mm in diameter so that the tips of the fingers do not protrude from the hole. The finger protection cot is characterized in that the main body further includes an anti-slip area with flare knurling applied over the entire periphery of the surface area near the rear end opening.
2. 2. A set of finger protection cots according to claim 1, each of which is fitted to the tip of a corresponding one of five fingers, wherein each finger protection cot has an inner diameter such that the main body fits loosely onto the corresponding finger.
3. 3. The finger protection cot according to claim 1, wherein the main body has a thickness of 3.5 mm or more and 5.5 mm or less.
Citation Information
Patent Citations
Finger protecting tool
JP2006291405A
Finger protector
JP2023068753A