Vibration damping device that limits impact input

Abstract

To provide a vibration attenuation device, limiting an impact input, that is enhanced in practicality and usability, has presentation effect, is improved in feeling of vibration, and adjusts the input as required.SOLUTION: A vibration attenuation device limits an impact input, and comprises a main body 10, an impact assembly, a vibration attenuation member 33, and an input limiting assembly. The main body includes a coupling part 11 and a grip part 12, and the impact assembly is combined with the main body to move relative the coupling part, and also includes an insertion part 21, an impact part 22, and a fastening part 23, wherein the insertion part is combined movably with a perforated hole of the coupling part, the impact part is located below one end of the insertion part and the coupling part, and the fastening part is fitted to the insertion part and also abuts on the coupling part. The vibration attenuation member is mounted on the insertion part and abuts on the coupling part and impact part, and the input limiting assembly is arranged between the impact assembly and main body to provided input presentation effect.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] More particularly, the present invention relates to a vibration damping device for limiting impact input, which has a presentation effect, improves vibration feel, and allows the input range to be adjusted as required. [Background technology]

[0002] Conventional construction hammers used to drive nails into wooden boards, cement walls, or metal plates often bounce back due to the repulsive force generated during impact, which not only shortens the contact time between the striking surface of the hammer and the nail, but also increases the possibility of the nail bending or slipping out of place, and the instantaneous repulsive force is converted into heat energy and impact noise, which reduces the efficiency of the striking input applied by the user and prevents the applied force from being fully transmitted to the nail, resulting in the user having to strike multiple times, which requires extra effort and time. In addition, the repulsive force and vibration generated during impact are transmitted to the grip of the hammer, causing discomfort to the user. Furthermore, most conventional medical hammers and surgical hammers have a striking surface that is an integral rigid structure, and when dentists use conventional medical hammers and surgical hammers during artificial root implant treatment, the repulsive force and vibration generated during impact make it difficult for the doctor to grip the hammer and use it, and the patient may feel pain due to the excessive striking force and may suffer a concussion.

[0003] Therefore, conventional construction hammers, medical hammers, and surgical hammers have a striking surface that is an integral rigid structure, which makes it easy for a rebound force to be generated when striking, resulting in a certain amount of impact noise and discomfort, as well as adversely affecting ease of use. Furthermore, since there is no effect of informing the user of the magnitude of the impact input, it is difficult to perform the impact operation within the required output range. Furthermore, excessive impact input generates a greater rebound force, causing further vibration and discomfort to the user and the subject receiving the impact treatment. Furthermore, since the impact input cannot be adjusted as needed, there was a need to improve practicality and usability. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] China Patent Publication No. CN101987444A Summary of the Invention [Problem to be solved by the invention]

[0005] The inventor of the present invention has considered the structural and operational deficiencies of conventional striking tools such as construction hammers, medical hammers, surgical hammers and golf club heads, and through extensive testing and research has finally created the present invention, which improves upon the conventional shortcomings.

[0006] The present invention primarily aims to provide a vibration damping device that, by using a compact structure and arrangement, can suppress the rebound force that rebounds instantly during impact, thereby providing a delayed rebound effect of the rebound force and lengthening the contact time between the striking surface of the hammer and the object to be struck, and also has the effect of informing the user whether the magnitude of the impact input exceeds a predetermined input range, allowing the user to perform the impact operation with an appropriate amount of force, thereby reducing discomfort during use, improving the comfort of holding the hammer, and preventing excessive vibrations from being applied to the object to be struck or the subject receiving the impact treatment, and further allowing the range of the impact input to be adjusted as necessary, thereby enhancing practicality and ease of use, having a presentation effect, improving the sense of vibration, and allowing the input to be adjusted as necessary. [Means for solving the problem]

[0007] In order to achieve the above object, the present invention provides a vibration damping device for limiting an impact input, the vibration damping device comprising: a body; an impact assembly; a vibration damping member; and an input limiting assembly; The main body is a long rod-like body, and has a connecting portion having a drilled hole at one end and a grip portion at the other end. the impact assembly is combined with the main body so as to be movable relative to the connecting portion, and includes an insertion portion, an impact portion, and a fastening portion, the insertion portion is combined with a drilling hole of the connecting portion so as to be movable, the impact portion is located at one end of the insertion portion and below the connecting portion, the fastening portion is attached to the insertion portion and abuts against the connecting portion, The vibration damping member is mounted on the insertion portion and abuts against the connecting portion and the striking portion, the input limiting assembly is disposed between the striking assembly and the main body, and is used to inform a user when an impact input at the time of striking exceeds a predetermined input range of the vibration damping device that limits the impact input, and includes an input limiting member, the input limiting member being disposed between the insertion portion and the coupling portion, and providing an input presenting effect and a further shock absorbing effect; The input limiting assembly further includes a fitting portion and a positioning portion, the fitting portion being integrally molded on the bottom of the connecting portion and having a through hole communicating with the drilled hole, the positioning portion being integrally molded at the location where the insertion portion and the striking portion are connected, the fitting portion being disposed above the positioning portion and spaced apart from the positioning portion, the vibration damping member being attached between the fitting portion and the positioning portion and abutting against the connecting portion and the striking portion, and the input restricting member being attached on the insertion portion so as to be disposed between the positioning portion and the fitting portion, Furthermore, the input restricting member includes a presentation member that generates light or sound, and when the engaging portion comes into contact with the input restricting member upon striking, the input magnitude is notified to the user through light or sound.

[0008] The input limiting assembly includes at least one magnetic member that is disposed on the fastening portion and is capable of magnetically attracting the coupling portion to provide an additional input presentation effect.

[0009] The input restricting member is preferably a spring, annular rubber or silicone rubber, an elastic metal block member, an elastic block member or a bushing attached to the insertion portion between the fitting portion and the positioning portion.

[0010] It is preferable that the input restricting member is slidably mounted on the insertion portion or fixed thereto.

[0011] It is preferable that the input restricting member is arranged at a distance from the fitting portion so as to be fixed onto the positioning portion, or is arranged at a distance from the positioning portion so as to be fixed onto the fitting portion.

[0012] the input restricting member includes a position restricting slit, a receiving hole, a restricting pin, a fixing member, and a pressing unit; The position limiting slit is formed on the outer circumferential surface of the insertion portion so as to be recessed in an annular shape, and has at least one inclined inner wall surface, The receiving hole is formed along a radial direction on the coupling portion, the limiting pin is movably installed in the receiving hole toward the insertion portion, and has an inclined surface that abuts against the inclined inner wall surface of the position limiting slit, The fixing member is attached to an outer end of the receiving hole, It is preferable that the pressing unit is disposed in the receiving hole between the fixing member and a limiting pin, and the limiting pin passes through the drilled hole and comes into contact with an outer circumferential surface of the insertion portion.

[0013] The input restricting member includes a position restricting slit, a receiving hole, a restricting pin, a fixing member, a pressing unit, and a pulling rod; The position limiting slit is formed on the outer circumferential surface of the insertion portion so as to be recessed in an annular shape, and has at least one inclined inner wall surface, The receiving hole is formed along a radial direction on the coupling portion, the limiting pin is movably installed in the receiving hole toward the insertion portion, and has an inclined surface that abuts against the inclined inner wall surface of the position limiting slit, The fixing member is attached to an outer end of the receiving hole, the pressing unit is disposed in the receiving hole between the fixing member and the limiting pin, the limiting pin passes through the drilled hole and abuts against an outer circumferential surface of the insertion portion, The tension rod preferably has one end exposed to the outside of the joint and the other end passing through the fixing member and the pressing unit and fixedly connected to the limiting pin.

[0014] the coupling portion includes a position limiting member disposed between the drilling hole and the insertion portion, the position limiting member being fixed to the drilling hole of the coupling portion and having a through hole, the position limiting member being inserted through the through hole to the outside of the insertion portion, the input restricting member includes a receiving hole, a limiting pin, a fixing member, and a pressing unit; The receiving hole is formed in the coupling portion along a radial direction and communicates with the drilling hole, The limiting pin is movably installed in the receiving hole and abuts against the outer circumferential surface of the position limiting member. The fixing member is attached to an outer end of the receiving hole, It is preferable that the pressing unit is disposed in the receiving hole between the fixing member and the limiting pin.

[0015] It is preferable that the limiting pin has magnetism, a magnetic body is provided on the outer peripheral surface of the position limiting member, and the magnetic body and the limiting pin are magnetically attracted to each other so as to face each other.

[0016] The input restricting member includes a position restricting slit, a receiving hole, and a restricting pin, The position limiting slit is formed along a radial direction of the insertion portion so as to penetrate the insertion portion, The receiving hole is formed along the radial direction on the joint portion. The limiting pin is disposed in the receiving hole and has a magnetic property. the insertion portion includes a magnetic body disposed within the position limiting slit, It is preferable that the magnetic body and the limiting pin are aligned by moving the insertion portion relative to the coupling portion.

[0017] It is preferable that the input restricting member is attached onto the insertion portion so as to be disposed between the fastening portion and the connecting portion.

[0018] The striking portion of the striking assembly is preferably a spherical, flat, axe-shaped, curved or conical structure.

[0019] It is preferable that the bottom of the position limiting member protrudes from the connecting portion through the drilled hole, whereby the vibration damping member is partially attached to the outside of the position limiting member, the input restricting member includes a position limiting slit formed in an annular shape on the outer peripheral surface of the position limiting member, and the limiting pin abuts against the position limiting member through the position limiting slit.

[0020] It is preferable that the input limiting assembly includes a positioning portion formed at the point where the insertion portion and the striking portion are connected, and the vibration damping device that limits the striking input includes an auxiliary elastic member mounted on the insertion portion, and the auxiliary elastic member is positioned between the position limiting member and the positioning portion.

[0021] The input limiting assembly includes a fitting portion and a positioning portion. The fitting portion has a recessed structure recessed into the connecting portion, The positioning portion is formed at a location where the insertion portion and the striking portion are connected, and is inserted into the fitting portion through a bottom of the connecting portion; The vibration damping member is disposed between the connecting portion and the striking portion so as to be attached to the outside of the positioning portion, It is preferable that a separation distance is provided between the fitting portion and the positioning portion.

[0022] The input limiting assembly includes a fitting portion and a positioning portion. The fitting portion is formed at a bottom of the coupling portion and is disposed on one side of the insertion portion, It is preferable that the positioning portion is formed on the striking portion and is disposed on one side of the insertion portion and spaced apart from the fitting portion so as to correspond to the fitting portion.

[0023] The input limiting assembly includes a fitting portion and a positioning portion. The fitting portion is formed at a bottom of the coupling portion and is disposed so as to surround the insertion portion, It is preferable that the positioning portion is formed on the striking portion and is disposed so as to surround the insertion portion at a distance corresponding to the fitting portion.

[0024] The coupling portion includes a side hole formed through a side wall of the coupling portion, the insertion portion is inserted into the side hole through a bottom of the coupling portion, The fastening portion is coupled to the insertion portion through the horizontal hole, It is preferable that the input restricting member is disposed between the connecting portion and the fastening portion, and within the lateral hole. Effect of the Invention

[0025] According to the above-mentioned technical features, the vibration damping device for limiting an impact input according to the present invention has a simple structure, which allows easy production, maintenance, and part replacement, and can inform the user of the magnitude of the impact input by identifying whether the input limiting assembly installed between the connecting part of the main body and the impact part is compressed, thereby obtaining the effect of regulating the magnitude of the impact input, and can provide a vibration damping effect and a shock absorbing effect by a delayed rebound for the rebound force generated in the impact part during impact, and can improve bending or shifting of the impact object by lengthening the contact time between the impact part and the impact object, thereby reducing energy loss and impact noise, relatively reducing the number of impacts and the working time, and further reducing discomfort during use, allowing the user to firmly grip the hammer and perform impact work. In addition, the simplified structure allows the input limiting assembly to be given different biasing forces by simply replacing it with one with a different elastic force or by turning the fastening part to adjust the tightness, thereby providing a presentation effect, improving the vibration feeling, and allowing the input to be adjusted as needed, and a vibration damping device for limiting an input can be provided. [Brief description of the drawings]

[0026] [Figure 1] FIG. 1 is a perspective view of a first embodiment of the present invention. [Diagram 2] FIG. 1 is an exploded view of a first embodiment of the present invention. [Diagram 3] FIG. 1 is a cross-sectional view of a portion of a first embodiment of the present invention. [Figure 4] FIG. 2 is a schematic diagram showing a state in which a hitting operation is performed in the first embodiment of the present invention. [Diagram 5] FIG. 2 is a schematic diagram showing a state in which a hitting operation is performed in the first embodiment of the present invention. [Figure 6] FIG. 11 is a partial cross-sectional view of a second embodiment of the present invention. [Figure 7] FIG. 11 is a partial cross-sectional view of a third embodiment of the present invention. [Figure 8] FIG. 13 is a schematic diagram showing a state in which a hitting operation is performed in a third embodiment of the present invention. [Figure 9] FIG. 11 is a partial cross-sectional view of a fourth embodiment of the present invention. [Figure 10] FIG. 13 is a schematic diagram showing a state in which a hitting operation is performed in a fourth embodiment of the present invention. [Figure 11] FIG. 11 is a partial cross-sectional view of a fifth embodiment of the present invention. [Figure 12] FIG. 13 is a partial cross-sectional view of a sixth embodiment of the present invention. [Figure 13] FIG. 13 is a partial cross-sectional view of a seventh embodiment of the present invention. [Figure 14] FIG. 13 is a partial cross-sectional view of an eighth embodiment of the present invention. [Figure 15] FIG. 13 is a partial cross-sectional view of a ninth embodiment of the present invention. [Figure 16] FIG. 23 is a partial cross-sectional view of a tenth embodiment of the present invention. [Figure 17] FIG. 23 is a partial cross-sectional view of an eleventh embodiment of the present invention. [Figure 18] FIG. 12 is a cross-sectional view of a portion of a twelfth embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in conjunction with the drawings, and the technical means adopted by the present invention to achieve the intended creative purpose will be further described.

[0028] The present invention relates to a vibration damping device for limiting an impact input, and in a first embodiment shown in FIGS. 1 to 3, the device comprises a main body 10, an impact assembly 20, and an input limiting assembly 30.

[0029] The main body 10 is a long metal rod-shaped body having a connecting portion 11 at one end, the connecting portion 11 having a drilled hole 111 formed so as to penetrate along the axial direction of the connecting portion 11, and a gripping portion 12 is provided at one end of the main body 10 remote from the connecting portion 11, and the gripping portion 12 has an anti-slip structure on its outer surface, which is preferably a plurality of annular grooves 121 arranged at intervals on the outer surface of the gripping portion 12, thereby enabling the user to firmly grip the gripping portion 12 of the main body 10.

[0030] The striking assembly 20 is combined with the main body 10 so as to be movable relative to the connecting part 11, and includes an insertion part 21, a striking part 22, and a fastening part 23, and the insertion part 21 is movably connected to the connecting part 11 of the main body 10. The insertion part 21 is preferably a rod inserted into the drilled hole 111 of the connecting part 11. The cross-sectional shape of the insertion part 21 is consistent with the cross-sectional shape of the drilled hole 111. For example, when the insertion part 21 has a circular cross-section, the insertion part 21 can rotate relative to the drilled hole 111, and when the insertion part 21 has a polygonal cross-sectional shape, the insertion part 21 can move relative to the drilled hole 111 but cannot rotate. A fastening structure 211 is provided at one end of the insertion part 21.

[0031] The striking part 22 is disposed at one end of the insertion part 21 away from the fastening structure 211 and below the coupling part 11, and is molded integrally with the insertion part 21, and may be made of a hard material such as metal, polyethylene (PE), plastic, or an elastic material such as rubber, silicone rubber, wood, or may be made of a magnetic metal, which can attract metal fittings such as nails when striking. Furthermore, the striking part 22 may be a structure having a spherical, flat, axe, curved, or conical shape, and a striking surface 221 is provided at the bottom of the striking part 221, which may be made of a hard material such as metal, polyethylene (PE), plastic, or an elastic material such as rubber, silicone rubber, wood, or leather.

[0032] The fastening portion 23 is attached to the insertion portion 21 and abuts against the connecting portion 11 of the main body 10, and the striking portion 22 is disposed below the connecting portion 11, and the fastening portion 23 and the insertion portion 21 are adjustably combined, specifically, the fastening portion 23 is disk-shaped and has a fastening hole 231 formed at the center, the fastening hole 231 is aligned on the same line as the drilled hole 111 of the connecting portion 11, and is combined so as to be fastened to the fastening structure 211 of the insertion portion 21. As shown in Fig. 3, the connection position between the fastening portion 23 and the insertion portion 21 is adjustable, so that the distance between the striking portion 22 and the connecting portion 11 can be changed. The input limiting assembly 30 is mounted on the insertion portion 21 of the striking assembly 20, and is in contact with the connecting portion 11 of the main body 10 and the striking portion 22 of the striking assembly 20 to inform the user whether the magnitude of the striking input at the time of striking exceeds a predetermined input range. The input limiting assembly 30 includes a fitting portion 31, a positioning portion 32, a vibration damping member 33, and an input restricting member 34. The fitting portion 31 is integrally formed with the bottom of the connecting portion 11 and has a through hole 311 communicating with the drilled hole 111. The outer diameter of the fitting portion 31 is smaller than the outer diameter of the connecting portion 11, and therefore the fitting portion 31 and the connecting portion 11 can be easily fitted to each other. A step is formed at the connection point, and the positioning portion 32 is integrally formed at the connection point between the insertion portion 21 and the striking portion 22, and its outer diameter is smaller than that of the striking portion 22 and larger than that of the insertion portion 21, so that a step is formed between the positioning portion 32 and the insertion portion 21 and between the positioning portion 32 and the striking portion 22, and the fitting portion 31 is disposed above the positioning portion 32 and spaced apart from the positioning portion 32, the vibration damping member 33 is attached between the fitting portion 31 and the positioning portion 32 and abuts against the connecting portion 11 and the striking portion 22, and the input restricting member 34 is attached on the insertion portion 21. By adjusting the connection position between the fastening portion 23 and the insertion portion 21, the compressed or expanded state of the input limiting assembly 30 installed between the striking portion 22 and the connecting portion 11 can be adjusted.

[0033] Furthermore, the vibration damping member 33 is a coil spring, which may have a uniform inner diameter (same inner diameters at the top and bottom) or different inner diameters (wider at the top and narrower at the bottom).If the spring has a uniform inner diameter, there is a possibility that different parts of the spring itself will collide when the spring is compressed, whereas if the spring has different inner diameters, different parts of the spring itself will not collide.

[0034] Furthermore, the vibration damping member 33 may be an elastic member, and may be a member made of an elastic material having a certain shape, such as a spring, rubber, silicon rubber, a washer, an elastic metal block, or an elastic block body, or may be a spring wrapped in rubber or silicon rubber. When using the vibration damping member 33, the magnitude of the urging force can be set by selecting the vibration damping member 33 with different elastic forces and by turning the fastening part 23 in advance to apply a preload to the vibration damping member 33. When the impact input from the user is smaller than the preset urging force of the vibration damping member 33, the user feels that the impact part 22 bounces instantly (instant rebound), while when the impact input from the user is larger than the preset urging force of the vibration damping member 33, the user feels that the impact part 22 bounces with a delay (delayed rebound). With this configuration, the user can distinguish whether the vibration damping member 33 is compressed or not, and thus can know the magnitude of the impact input, which results in an input presentation effect and an effect of regulating the magnitude of the impact input.

[0035] In addition, as shown in FIG. 3, it is preferable that the input limiting assembly 30 further includes at least one magnetic member 35, which is disposed on the fastening portion 23 and can magnetically attract the coupling portion 11, thereby providing an additional input presentation effect.

[0036] The input restricting member 34 is an elastic member, and may be a member made of an elastic material having a certain shape, such as a spring, rubber, silicone rubber, a washer, an elastic metal block, or an elastic block body, or may be a spring covered in rubber or silicone rubber. The input restricting member 34 may be slidably mounted on the insertion portion 21, or may be fixedly mounted on the insertion portion 21. Furthermore, the input restricting member 34 may be disposed at a distance from the fitting portion 31 so as to be fixedly mounted on the positioning portion 21, or may be disposed at a distance from the positioning portion 21 so as to be fixedly mounted on the fitting portion 31. It is preferable that the input restricting member 34 further includes a presentation member that generates light or sound. Thereby, when the fitting portion 31 comes into contact with the input restricting member 34 during striking, the magnitude of the striking input can be notified to the user through light or sound.

[0037] According to the above-mentioned technical features, the first embodiment of the vibration damping device for limiting impact input according to the present invention can be applied to a medical hammer or a construction hammer, for example, for driving an artificial tooth root implant into a patient's bone or for driving a nail into a wooden board. As shown in Fig. 1, when in use, the gripping part 12 of the main body 10 is gripped, and the impacting part 22 of the impact assembly 20 is swung down on the artificial tooth root implant or the nail. As shown in FIG. 4, when the striking portion 22 hits an artificial tooth root implant or a nail, a repulsive force is generated. If the repulsive force is smaller than the combined force of the magnetic attraction force between the magnetic member 35 and the connecting portion 11 and the preload force of the vibration damping member 33, the fastening portion 23 does not move away from the connecting portion 11 along the insertion portion 21, and the engaging portion 31 does not compress the vibration damping member 33, i.e., the striking surface 221 of the striking portion 22 does not move relative to the connecting portion 11. As a result, the striking portion 22 receives an instant rebound repulsive force.

[0038] On the other hand, as shown in Fig. 4, when the user applies a large impact force, if the repulsive force is greater than the combined force of the magnetic attraction force between the magnetic member 35 and the connecting portion 11 and the preload force of the vibration damping member 33, the impact portion 22 moves upward relative to the connecting portion 11, and the fastening portion 23 moves away from the connecting portion 11 along the insertion portion 21, and the vibration damping member 33 is compressed, whereby the energy of the impact input is converted into the compression potential energy of the vibration damping member 33, and at the same time, the main body 10 continues to move along the direction of the downward swing for a while as shown in Fig. 5 (i.e., it does not bounce back immediately). When the fitting portion 31 compresses the input restricting member 34 in conjunction with the movement of the main body 10, the input restricting member 34 is compressed, so that the impact surface 221 of the impact portion 22 is restricted from moving relative to the connecting portion 11, and the impact portion 22 receives the repulsive force of instant rebound.

[0039] As described above, the input limiting assembly 30 is installed between the coupling part 11 and the striking part 22, so that the repulsive force at the time of striking provides vibration damping and shock absorbing effects due to delayed rebound, and the phenomenon of bouncing back due to instantaneous rebound does not occur when driving a nail, improving the bending or deviation of the nail. Also, since the striking input can be continuously applied to the nail, the striking noise and the impact energy loss can be suppressed, and as a result, the number of strikes and the working time can be relatively reduced, thereby improving the working efficiency. In addition, when the first embodiment is applied to a medical hammer, the vibration damping and impact absorbing effects provided by the input limiting assembly 30 can reduce discomfort such as vibration felt by the practitioner and the patient when performing a striking treatment using the medical hammer, and the practitioner can firmly hold the main body 10 to perform the striking treatment. The input limiting assembly 30 not only provides vibration damping and shock absorbing effects, but also provides an input presentation effect by the input restricting member 34.

[0040] 2, a user can separate the fastening portion 23 from the insertion portion 21 by rotating the fastening portion 23, thereby replacing the input limiting assembly 30 (including the vibration damping member 33 and the input restricting member 34) having different elasticity between the connecting portion 11 and the hitting portion 22. Alternatively, as shown in FIG. 3, a user can change the interval between the connecting portion 11 and the hitting portion 22 by rotating the fastening portion 23, thereby causing the input limiting assembly 30 to exhibit different compression states and have different elasticity.

[0041] According to the above-mentioned technical features, the vibration damping device for limiting an impact input according to the present invention provides a vibration damping and shock absorbing effect by delayed rebound to the repulsive force at the time of impact through the input limiting assembly 30 disposed between the connecting part 11 and the impact part 22, and since a rebound phenomenon due to instantaneous rebound does not occur when a nail is driven, bending or shifting of the nail is improved. Furthermore, since an impact input can be continuously applied to the nail, impact noise and impact energy loss can be suppressed, and discomfort such as vibration felt by the practitioner and the patient can be reduced. The practitioner can firmly hold the main body 10 to perform the impact treatment. Furthermore, due to the compact structure and arrangement, different biasing forces can be applied to the input limiting assembly 30 by simply replacing the input limiting assembly 30 with one having a different elastic force or adjusting the tightening condition by turning the fastening part 23. In summary, when using the vibration damping device for limiting an impact input according to the present invention, first, it can be used as a first step of determining the impact input value by determining whether the fastening part 23 is separated from the connecting part 11, then it can be used as a second step of determining the impact input value by determining whether the fitting part 31 of the connecting part 11 contacts the input restricting member 34, i.e., whether resistance occurs, and finally it can be used as a third step of determining the impact input value by determining whether the input restricting member 34 is compressed and immediately rebounds. The present invention can provide a three-stage (triple-type) presentation effect during use by discriminating between three levels of impact input values, so that it can provide a vibration damping device for limiting an input that has a presentation effect, improves the vibration feeling, and can adjust the input as needed.

[0042] The second embodiment of the present invention shown in FIG. 6 is almost the same as the first embodiment shown in FIG. 1 to FIG. 3, but the difference is that the magnetic member 35 is not provided on the fastening portion 23, and instead, the vibration damping member 33 and the input restricting member 34 of the input restricting assembly 30 are simply used to provide a presentation effect and an improvement effect of vibration feeling. A metal fitting such as a washer may be attached to the fastening portion 23. Furthermore, the input restricting member 34 may be slidably mounted on the insertion portion 21 or may be fixed. Furthermore, the input restricting member 34 may be disposed at a distance from the fitting portion 31 so as to be fixed on the positioning portion 32, or may be disposed at a distance from the positioning portion 32 so as to be fixed on the fitting portion 31.

[0043] The third embodiment of the present invention shown in FIG. 7 is almost the same as the first embodiment shown in FIGS. 1 to 3, but differs in that the input restricting member 34B includes a position limiting slit 341B, a receiving hole 342B, a limiting pin 343B, a fixing member 344B, and a pressing unit 345B. The position limiting slit 341B is formed on the outer circumferential surface of the insertion portion 21B so as to be recessed in an annular shape, and has at least one inclined inner wall surface, and is preferably an annular groove. The receiving hole 342B is formed on the coupling portion 11B so as to communicate with the drilled hole 111 along the radial direction, and a female screw is engraved on the outer end away from the drilled hole 111B. The limiting pin The pin 343B is movably installed within the accommodating hole 342B toward the insertion portion 21B and has an inclined surface that abuts against the inclined inner wall surface of the position limiting slit 341B, the fixing member 344B is attached to the outer end of the accommodating hole 342B to prevent the limiting pin 343B from falling off from the connecting portion 11B, and the pressing unit 345B is disposed within the accommodating hole 342B between the fixing member 344B and the limiting pin 343B and urges the limiting pin 343B through the drilled hole 111 to abut against the outer peripheral surface of the insertion portion 21B, and it is preferable that the pressing unit 345B is a coil spring.

[0044] 8 shows a third embodiment of the vibration damping device for limiting impact input according to the present invention. When the impact part 22B impacts an object to be impacted and compresses the vibration damping member 33B during use, a relative movement occurs between the connecting part 11B and the inserting part 21B, and the position limiting slit 341B moves upward relative to the connecting part 11B. When the position limiting slit 341B and the receiving hole 342B are aligned, the limiting pin 343B is pressed by the biasing force of the pressing unit 345B and is locked so as to be fitted into the position limiting slit 341B, and the inclined inner wall surface of the position limiting slit 341B abuts against the inclined surface of the limiting pin 343B, thereby limiting the position of the impact assembly 20B relative to the connecting part 11B. With this configuration, if the impact input during impact exceeds the predetermined input range of the vibration damping device for limiting the impact input, the user can be notified, providing an input presentation effect. When the impact input during an impact exceeds the specified input range of the vibration damping device that limits the impact input and the limiting pin 343B is engaged in the position limiting slit 341B, the user presses the insertion portion 21B to move it downward relative to the connection portion 11B, and the limiting pin 343B is pressed by the insertion portion 21B and pushed into the accommodating hole 342B toward the fixing member 344B, thereby allowing the limiting pin 343B to come out of the position limiting slit 341B, and the connection portion 11B is pushed back to its normal position by the biasing force of the vibration damping member 33B.

[0045] FIG. 9 shows a fourth embodiment of the vibration damping device for limiting an impact input according to the present invention. The fourth embodiment is almost the same as the third embodiment shown in FIGS. 7 and 8, except that the input restricting member 34C further includes a pulling rod 346C, one end of which is exposed to the outside of the connecting portion 11C, and the other end of which is fixedly connected to the limiting pin 343C through the fixing member 344C and the pressing unit 345C.

[0046] 9 and 10 show a fourth embodiment of the vibration damping device for limiting impact input according to the present invention. In use, when the striking portion 22C strikes an object to be struck and the insertion portion 21C moves relative to the connecting portion 11C, the position limiting slit 341C moves upward relative to the connecting portion 11C, and when the position limiting slit 341C and the accommodating hole 342C are aligned, the limiting pin 343C is pressed by the biasing force of the pressing unit 345C and engaged in the position limiting slit 341C. Then, the inclined inner wall surface of the position limiting slit 341C abuts against the inclined surface of the limiting pin 343C, thereby limiting the position of the striking assembly 20C relative to the connecting portion 11C, and at the same time, the pulling rod 346C moves toward the insertion portion 21C as the limiting pin 343C moves. With this configuration, when the impact input during impact exceeds the predetermined input range of the vibration damping device that limits the impact input, the user can be notified, thereby providing an input presentation effect. When the impact input during impact exceeds the predetermined input range of the vibration damping device that limits the impact input and the limiting pin 343C is engaged with the position limiting slit 341C, the user can pull the pulling rod 346C backward, and the limiting pin 343C is returned into the receiving hole 342C toward the fixed member 344C as the pulling rod 346C moves, whereby the limiting pin 343C can be released from the position limiting slit 341C, and the insertion portion 21C moves downward relative to the connecting portion 11C so that the connecting portion 11C is pushed back to its normal position by the biasing force of the vibration damping member 33B.

[0047] Fig. 11 shows a fifth embodiment of the vibration damping device for limiting impact input according to the present invention, which is almost the same as the third embodiment shown in Fig. 7 and Fig. 8, but differs as follows: The joining part 11D further includes a position limiting member 13D arranged between the drilling hole 111D and the insertion part 21D, and the position limiting member 13D is preferably a bush of a hollow tubular part, and the position limiting member 13D is fixedly installed in the drilling hole 111D of the joining part 11D, has a through hole 131D, and is inserted to the outside of the insertion part 21D through the through hole 131D. Here, there is a gap between the through hole 131D and the insertion portion 21D, one end of the vibration damping member 33D abuts against one end of the position limiting member 13D, no position limiting slit is provided on the input restricting member 34, and the limiting pin 343D abuts against the outer circumferential surface of the position limiting member 13D so as to face one side of the position limiting member 13D. During use, when the striking portion 22D strikes an object to be struck and compresses the vibration damping member 33D, the position limiting member 13D and the limiting pin 343D abut against each other, and a frictional force is generated between them, so that an effect of restricting the magnitude of the striking input to the vibration damping member 33D is obtained when the striking portion 22D moves relative to the connecting portion 11D.

[0048] 12 shows a sixth embodiment of the vibration damping device for limiting an impact input according to the present invention, which is almost the same as the fifth embodiment shown in FIG. 11, but differs in that the input restricting member 34E does not include a fixing member and a pressing unit, and instead, a magnetic body 14E that is magnetically attracted to the limiting pin 343E is provided on the outer circumferential surface of the position limiting member 13E so as to face the limiting pin 343E. When the striking part 22E strikes an object to be struck and compresses the vibration damping member 33E during use, a magnetic attraction force acts between the magnetic body 14E and the limiting pin 343E, and this provides an effect of restricting the magnitude of the impact input to the vibration damping member 33E when the striking part 22E moves relative to the connecting part 11E.

[0049] Fig. 13 shows a seventh embodiment of the vibration damping device for limiting an impact input according to the present invention, which is almost the same as the sixth embodiment shown in Fig. 12, but differs as follows: That is, the joint portion 11F does not include a position limiting member, a position limiting slit 341F of the input restricting member 34F is formed so as to penetrate the insertion portion 21F along the radial direction of the insertion portion 21F, the magnetic body 14F is installed in the position limiting slit 341F, the limiting pin 343F is installed in the receiving hole 342F, and the insertion portion 21F moves relative to the joint portion 11F to align the magnetic body 14F and the limiting pin 343F, and the limiting pin 343F here is a magnet block. During use, when the striking portion 22F strikes an object to be struck and compresses the vibration damping member 33F, the magnetic body 14F is aligned with the limiting pin 343F as the insertion portion 21F moves, and a magnetic attraction force acts between the two, thereby regulating the magnitude of the striking input to the vibration damping member 33F.

[0050] Fig. 14 shows an eighth embodiment of the vibration damping device for limiting an impact input according to the present invention, which is almost the same as the second embodiment shown in Fig. 6, but differs as follows: That is, the input restricting member 34G is an elastic member, which may be a member made of an elastic material having a certain shape, such as a spring, rubber, silicon rubber, a washer, an elastic metal block or an elastic block body, or may be a spring encased in rubber or silicon rubber, and is not juxtaposed between the fitting portion 31G and the positioning portion 32G, but is instead disposed between the fastening portion 23G and the connecting portion 11. In use, when the striking part 22G strikes an object to be struck and compresses the vibration damping member 33G, the fastening part 23G is separated from the input restricting member 34G as the insertion part 21G moves, and the vibration damping member 33G in the compressed state exerts a pushing force on the striking part 22G and at the same time moves the fastening part 23G attached on the insertion part 21G toward the connecting part 11G. The input restricting member 34G installed between the fastening part 23G and the connecting part 11G prevents the fastening part 23G from colliding with the connecting part 11G during the striking process, thereby reducing damage caused by the collision. In addition, the input restricting member 34G can provide a buffer space for the striking assembly 20 to move outward, thereby making it possible to lengthen the contact time between the striking part 22G and the object to be struck, and as a result, the compression potential energy stored by the vibration damping member 33G can be efficiently converted into kinetic energy that moves the object to be struck forward. Furthermore, when the fitting portion 31G hits the positioning portion 32G during the striking process, the user feels a repulsive force immediately rebounding, which has the effect of letting the user know whether the input range is exceeded. When striking with a strong force, if the fitting portion 31G hits the positioning portion 32G, the striking operation can be performed without limiting the magnitude of the striking input. On the other hand, when the fitting portion 31G does not hit the positioning portion 32G, the vibration damping member 33G installed between the striking portion 22G and the connecting portion 11G can suppress the repulsive force from rebounding immediately, thereby improving the bending or displacement of the nail.Furthermore, by adjusting the distance between the fitting portion 31G and the positioning portion 32G and the elastic force of the vibration damping member 33G, it is possible to adjust the desired input range. Furthermore, it is also possible to perform a striking operation without the input restricting member 34G.

[0051] Fig. 15 shows a ninth embodiment of the vibration damping device for limiting an impact input according to the present invention, which is almost the same as the fifth embodiment shown in Fig. 11, but differs as follows: the bottom of the position limiting member 13H protrudes from the connecting portion 11H through the drilled hole 111H, so that the vibration damping member 33H is partially mounted on the outside of the position limiting member 13H, and the input restricting member 34H includes a position limiting slit 341H formed in an annular shape on the outer circumferential surface of the position limiting member 13H, and the limiting pin 343H can abut against the position limiting member 13H through the position limiting slit 341H. Furthermore, the vibration damping device for limiting an impact input includes an auxiliary elastic member 36H mounted on the insertion portion 21H, and the auxiliary elastic member 36H is disposed between the position limiting member 13H and the positioning portion 32H, providing the vibration damping device for limiting an impact input with an auxiliary shock absorbing effect.

[0052] Fig. 16 shows a tenth embodiment of the vibration damping device for limiting impact input according to the present invention, which is almost the same as the eighth embodiment shown in Fig. 14, but differs as follows. That is, the fitting portion 31I is a recessed structure recessed into the connecting portion 11I, the positioning portion 32I is inserted into the fitting portion 31I through the bottom of the connecting portion 11I, the vibration damping member 33I is disposed in contact between the connecting portion 11I and the striking portion 22I so as to be attached to the outside of the positioning portion 32I, and a distance is provided between the fitting portion 31I and the positioning portion 32I. In use, when the striking portion 22I strikes an object to be struck and compresses the vibration damping member 33I, the vibration damping member 33I in the compressed state applies a pushing force to the striking portion 22I, and at the same time, moves the fastening portion 23I attached on the insertion portion 21I toward the connecting portion 11I. The input restricting member 34I installed between the fastening portion 23I and the connecting portion 11I can prevent the fastening portion 23I and the connecting portion 11I from colliding with each other during the striking process, thereby reducing damage caused by the collision. In addition, when the fitting portion 31I hits the positioning portion 32I during the striking process, the user feels a repulsive force immediately rebounding, which has the effect of letting the user know whether the input range is exceeded. When attempting to strike with a strong force, if the fitting portion 31I is made to collide with the positioning portion 32I, the striking operation can be performed without restricting the magnitude of the striking input. On the other hand, when the fitting portion 31I is not hitting the positioning portion 32I, the vibration damping member 33I installed between the striking portion 22I and the connecting portion 11I can suppress the repulsive force from immediately rebounding, thereby improving the bending or displacement of the nail. Furthermore, the desired input range can be adjusted by adjusting the gap between the fitting portion 31I and the positioning portion 32I and the elastic force of the vibration damping member 33I. Furthermore, it is also possible to perform a striking operation without the input restricting member 34I.

[0053] Fig. 17 shows an eleventh embodiment of the vibration damping device for limiting impact input according to the present invention, which is almost the same as the first embodiment shown in Fig. 3, but differs as follows: the fitting portion 31J is formed integrally or separately on the bottom of the connecting portion 11J and disposed on one side of the insertion portion 21J or so as to surround the periphery thereof, and the positioning portion 32J is formed integrally or separately on the striking portion 22J and disposed on one side of the insertion portion 21J or so as to surround the periphery thereof at a distance corresponding to the fitting portion 31J.

[0054] Fig. 18 shows a twelfth embodiment of the vibration damping device for limiting an impact input according to the present invention. The twelfth embodiment is almost the same as the first embodiment shown in Fig. 3, but the differences are as follows. That is, the coupling part 11K includes a horizontal hole 112K formed so as to penetrate the side wall of the coupling part 11K, the insertion part 21K is inserted into the horizontal hole 112K through the bottom of the coupling part 11K, the fastening part 23K is combined with the insertion part 21K through the horizontal hole 112K, and the input restricting member 34K is disposed between the coupling part 11K and the fastening part 23K and in the horizontal hole 112K. When a strong impact operation is performed, when the fastening part 23K hits the top of the horizontal hole 112K, the effect of notifying the user that the predetermined input range has been exceeded is obtained, and the impact operation can be performed without limiting the magnitude of the impact input.

[0055] The vibration damping members 33, 33B, 33C, 33D, 33E, 33F, 33G, 33H, 33I, 33J, 33K and the input restricting members 34, 34A, 34G, 34I, 34K in each of the above-mentioned embodiments are elastic members and may be members made of an elastic material having a certain shape, such as a spring, rubber, silicone rubber, a washer, an elastic metal block or an elastic block body, or may be a spring encased in rubber or silicone rubber, and further, both may be any combination of the above-mentioned elastic materials, with no limitations on the combination.

[0056] Furthermore, when the vibration damping members 33, 33B, 33C, 33F, 33G, 33I, 33K and the input restricting members 34, 34A in each of the above-mentioned embodiments are maximally compressed during a striking operation, the user can perform a striking operation without restricting the magnitude of the striking input.

[0057] The above description is merely a preferred embodiment of the present invention, and does not limit the present invention in any form. The present invention can be applied to a hammer, an axe, a golf club head, or any hitting tool. The present invention is disclosed above by a preferred embodiment, but it is not intended to limit the present invention. Any equivalent embodiment that is modified and modified by all skilled in the art using the technical content disclosed above within the scope of the technical concept of the present invention, and that does not deviate from the content of the technical concept of the present invention, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention, are still all within the scope of the technical concept of the present invention. [Explanation of symbols]

[0058] 10. Main Unit 11, 11B, 11C, 11D, 11E, 11F, 11G, 11H, 11I, 11J, 11K joint 111, 111B, 111C, 111D, 111E, 111F, 111G, 111H, 111I drilling holes 112K Side Cave 12 Grip part 121 Circular groove 13D, 13E, 13H Position limiting members 131D, 131E, 131H through hole 14E, 14F magnetic material 20, 20C Strike Assembly 21, 21B, 21C, 21D, 21E, 21F, 21G, 21H, 21I, 21J, 21K Insertion part 211 Fastening structure 22, 22B, 22C, 22D, 22E, 22F, 22G, 22H, 22I, 22J, 22K Impact section 221 Striking surface 23, 23G, 23I, 23K fastening section 231 Fastening hole 30 Input Limiting Assembly 31, 31G, 31I, 31J mating part 311 Through hole 32, 32G, 32H, 32I, 32J Positioning part 33, 33B, 33C, 33D, 33E, 33F, 33G, 33H, 33I, 33J, 33K Vibration damping members 34, 34A, 34B, 34C, 34D, 34E, 34F, 34G, 34H, 34I, 34K Input restriction member 341B, 341C, 341F, 341H Position limiting slit 342B, 342C, 342D, 342E, 342F, 342H Receiving holes 343B, 343C, 343D, 343E, 343F, 343H Restriction pin 344B, 344C, 344D, 344H Fixing members 345B, 345C, 345D, 345H Pressing Unit 346C Tensile Rod 35 Magnetic Components 36H Auxiliary elastic member

Claims

1. A vibration damping device for limiting an impact input, comprising: a body; an impact assembly; and an input limiting assembly including a vibration damping member; The main body is a long rod-like body, and has a connecting portion having a drilled hole at one end and a grip portion at the other end. the impact assembly is combined with the main body so as to be movable relative to the connecting portion, and includes an insertion portion, an impact portion, and a fastening portion, the insertion portion is combined with a drilling hole of the connecting portion so as to be movable, the impact portion is located at one end of the insertion portion and below the connecting portion, the fastening portion is attached to the insertion portion and abuts against the connecting portion, the vibration damping member is attached to the insertion portion, abuts against the connecting portion and the striking portion, and has a preset biasing force; the input limiting assembly is disposed between the striking assembly and the main body, and includes a configuration for notifying a user when an impact input during striking exceeds a predetermined input range of a vibration damping device that limits the impact input, and includes an input restricting member; the input restricting member is disposed on the insertion portion at a position not in contact with the vibration damping member, and provides an input presenting effect and a further shock absorbing effect; The vibration damping device for limiting the impact input is capable of allowing a user to determine whether the impact input has exceeded the predetermined input range in three stages during use, In the first step, the fastening portion is judged based on whether it is separated from the connecting portion; In a second step, the input restricting member is determined to be in contact with and compressed between the connecting portion and the striking portion, A vibration damping device for restricting an impact input, characterized in that a third stage is determined based on whether the input restricting member is compressed between the connecting portion and the impact portion and immediately rebounds.

2. 2. The vibration damping device for limiting impact input as described in claim 1, characterized in that the input limiting assembly includes an engagement portion and a positioning portion, the engagement portion being integrally molded on the bottom of the connecting portion and having a through hole communicating with the drilled hole, the positioning portion being integrally molded at the location where the insertion portion and the striking portion are connected, the engagement portion being positioned above the positioning portion and spaced apart from the positioning portion, the vibration damping member being attached between the engagement portion and the positioning portion and abutting against the connecting portion and the striking portion, and the input restricting member being attached on the insertion portion so as to be positioned between the positioning portion and the engagement portion.

3. The vibration damping device for limiting impact input as described in claim 2, characterized in that the input restricting member includes a presentation member that generates light or sound, and when the engaging portion comes into contact with the input restricting member upon impact, the device notifies the user of the magnitude of the input through light or sound.

4. The vibration damping device for limiting impact input as described in claim 3, characterized in that the input limiting assembly includes at least one magnetic member that is disposed on the fastening portion and can magnetically attract the coupling portion, thereby providing an additional input presentation effect.

5. A vibration damping device for limiting impact input as described in claim 3 or claim 4, characterized in that the input restricting member is a spring, annular rubber or silicone rubber, an elastic metal block member, an elastic block member or a bush attached to the insertion portion between the fitting portion and the positioning portion.

6. 6. The vibration damping device for limiting an impact input according to claim 5, wherein the input restricting member is slidably mounted on the insertion portion.

7. 7. The vibration damping device for limiting an impact input according to claim 6, wherein the input restricting member is disposed at a distance from the fitting portion so as to be fixedly mounted on the positioning portion.

8. 6. The vibration damping device for restricting an impact input according to claim 5, wherein the input restricting member is fixedly mounted on the insertion portion.

9. 5. The vibration damping device for restricting an impact input according to claim 2, wherein the input restricting member is slidably attached onto the insertion portion.

10. 10. The vibration damping device for limiting an impact input according to claim 9, wherein the input restricting member is disposed at a distance from the fitting portion so as to be fixedly mounted on the positioning portion.

11. 5. The vibration damping device for restricting an impact input according to claim 1, wherein the input restricting member is fixed onto the insertion portion.

12. 2. The vibration damping device for limiting impact input according to claim 1, wherein the impact part of the impact assembly is a structure having a spherical shape, a flat shape, an axe shape, a curved shape, or a cone shape.

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