Hand-held stapler

Abstract

This disclosure relates to the field of stapler technology, and in particular to a handheld stapler, comprising a handle, staple path, staple holder, and trigger. The handle has a first end and a second end. One end of the staple path is hinged to the handle via a first hinge axis, which is located between the first end and the second end of the handle. The other end of the staple path has a staple outlet. One end of the staple holder is hinged to the staple path via the first hinge axis, and the other end of the staple holder is provided with a lower staple groove, which is opposite to the staple outlet. The trigger includes a connecting part and a grip part. The connecting part is connected to the grip part, and the end of the connecting part away from the grip part is hinged to the handle via a second hinge axis, which is located between the first end of the handle and the first hinge axis. In the unloaded condition and when the trigger is gripped, the connecting part can abut against the staple holder, so that there is a set safe distance between the grip part and the handle, reducing the risk of the palm being pinched.

Description

Technical Field

[0001] This disclosure relates to the field of stapler technology, and in particular to a handheld stapler. Background Technology

[0002] A handheld stapler is a stapler that does not need to be placed on a table and can be held and operated with one hand while suspended in the air. See related technologies. Figure 1A As shown, the handle 01 and trigger 02 of the handheld stapler are roughly V-shaped, and in the free state, there is a V-shaped gap between them, with the endpoint of the V-shaped gap located on the left and the opening facing the right. During operation, as the grip strength is increased, the trigger 02 will gradually move closer to the handle 01 and partially overlap with it. The endpoint M of the V-shaped gap will significantly shift to the right to position M', thus causing the gap to gradually decrease. Figure 1B As shown. The skin and flesh covering this area of ​​the palm are at risk of being accidentally pinched. For example, the endpoint of the V-shaped gap may move to the base of the user's index finger or even the base of the ring finger, making the skin and flesh in this area from the base of the index finger to the base of the ring finger on the palm side prone to pinching. Utility Model Content

[0003] The purpose of this disclosure is to provide a handheld stapler to reduce the risk of hand injury during use.

[0004] For the purposes described above, this disclosure provides a handheld stapler, comprising: A grip having a first end and a second end; The nail track has one end hinged to the handle via a first hinge axis located between a first end and a second end of the handle, and the other end of the nail track has a nail outlet. A nail holder, one end of which is hinged to the nail track via a first hinge shaft, and the other end of which is provided with a lower nail groove opposite to the nail outlet; and A trigger, comprising a connecting portion and a grip portion, wherein the connecting portion is connected to the grip portion, and one end of the connecting portion away from the grip portion is hinged to the handle via a second hinge axis, the second hinge axis being located between a first end of the handle and a first hinge axis; wherein, under no-load conditions and when the trigger is gripped, the connecting portion can abut against the pin seat to provide a predetermined safe distance between the grip portion and the handle.

[0005] In some embodiments of this disclosure, the pin seat is provided with a limiting part, the connecting part is provided with a limiting mating part, and the limiting mating part cooperates with the limiting part to limit the maximum stroke of the trigger under no-load conditions.

[0006] In some embodiments of this disclosure, the limiting part includes a pin, the limiting mating part is a limiting hole, the hole wall of the limiting hole includes a first hole wall and a second hole wall, the first hole wall is located on the side of the second hole wall away from the second hinge axis, and the pin passes through the limiting hole; in the free state, the pin abuts against the first hole wall, and in the no-load working condition and the trigger is in the gripped state, the pin abuts against the second hole wall.

[0007] In some embodiments of this disclosure, the grip has a first concave surface on the side facing the trigger, and the hand grip has a second concave surface on the side facing the grip, wherein the maximum distance between the first concave surface and the second concave surface is greater than the set safety distance.

[0008] In some embodiments of this disclosure, the position where the nail seat abuts against the connecting portion is a first position, and the position where the nail seat intersects with the first concave surface is a second position, with the second position located between the first position and the second hinge axis.

[0009] In some embodiments of this disclosure, a stop portion is also included, which is disposed between the grip and the trigger to maintain a predetermined safe distance between the grip and the trigger.

[0010] In some embodiments of this disclosure, the stop portion includes a first stop portion and a second stop portion. The first stop portion is connected to the grip, and the second stop portion is connected to the trigger. Under no-load conditions and when the trigger is gripped, the first stop portion can restrict the movement of the second stop portion.

[0011] In some embodiments of this disclosure, one of the first stop portion and the second stop portion is a plug-in portion, and the other is a plug-in mating portion. The plug-in mating portion can cooperate with the plug-in portion to maintain a set safe distance between the grip and the trigger.

[0012] In some embodiments of this disclosure, the first stop portion is a plug-in portion, and the plug-in portion is provided with a plug hole; the second stop portion is a plug-in mating portion, and at least a portion of the plug-in mating portion can be inserted into the plug hole.

[0013] In some embodiments of this disclosure, the plug-in mating part is provided with a boss, which can abut against the end face of the plug-in part when the device is unloaded and the trigger is gripped.

[0014] In some embodiments of this disclosure, the range of the set safety distance is 3~5mm.

[0015] In some embodiments of this disclosure, the angle between the extension direction of the nail track and the line connecting the first hinge shaft and the second end of the handle is an obtuse angle.

[0016] In some embodiments of this disclosure, the surface of the handle away from the grip portion is provided with a protective layer, and / or the surface of the grip portion away from the handle is provided with a protective layer.

[0017] In some embodiments of this disclosure, the protective layer is made of an elastomer material.

[0018] The main beneficial effects of this disclosure are: The handheld stapler disclosed herein allows the user to hold the handle and trigger during use. For example, the thumb and thenar eminence are located on the upper surface and side of the handle, with the thenar eminence typically gripping the area between the first hinge shaft and the second end of the handle. The other four fingers are located on the grip and are used to drive the trigger and move the staple holder towards the staple path. In the unloaded condition and with the trigger in a gripped state, that is, without placing the stapled item, gripping the trigger causes the connecting part to abut against the staple holder, thereby preventing the trigger from moving. This provides a set safe distance between the grip of the trigger and the handle, reducing the risk of the palm being pinched. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments of this disclosure or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1A This is a schematic diagram of a handheld stapler in a free state in related technologies; Figure 1B This is a schematic diagram of a handheld stapler in the related technology under no-load conditions and with the trigger in a gripped state. Figure 2 A schematic diagram of the handheld stapler provided in the embodiment of this disclosure in a free state; Figure 3 A schematic diagram of the handheld stapler provided in the embodiment of this disclosure in a free state (partial cross-section of the handle to show the first hinge axis). Figure 4 A schematic diagram illustrating the use of the handheld stapler provided in this embodiment of the disclosure under no-load conditions and with the trigger in a gripped state; Figure 5 A schematic diagram of the handheld stapler provided in this embodiment of the present disclosure under no-load conditions and with the trigger in a gripped state; Figure 6Another structural schematic diagram of the handheld stapler provided in the embodiments of this disclosure (in a free state); Figure 7 for Figure 6 The front view of the handheld stapler is shown (a partial section of the handle is shown to show the first hinge axis). Figure 8 A schematic diagram of another structure of the handheld stapler provided in the embodiments of this disclosure from another perspective (in a free state). Figure 9 for Figure 6 The diagram shows a handheld stapler in an unloaded state with the trigger in a gripped position. Figure 10 for Figure 6 The diagram shows a handheld stapler in an unloaded state with the trigger gripped (a partial cross-section of the handle shows the first hinge axis).

[0021] The annotations in the attached figures are explained as follows: 01. Grip; 02. Trigger; 10. Handle; 11. First handle section; 12. Second handle section; 121. First concave surface; 20. Nail track; 21. Nail outlet; 30. Nail seat; 31. Lower nail groove; 32. Pin; 40. Trigger; 41. Connecting part; 411. Connecting plate; 4111. Limiting hole; 41111. First hole wall; 41112. Second hole wall; 41113. Third hole wall; 412. Bending section; 42. Hand grip; 421. Second concave surface; 50. First hinge shaft; 60. Second hinge shaft; 70. Nail clamping plate; 81. Insertion part; 811. Insertion hole; 82. Insertion mating part; 821. Rib plate; 8211. Boss; 90. Protective layer; P1. First position; P2. Second position. Detailed Implementation

[0022] The technical solutions of this disclosure will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this disclosure, not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0023] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0025] See Figures 2 to 10 As shown, this embodiment of the present disclosure provides a handheld stapler, including a handle 10, a staple track 20, a staple holder 30, and a trigger 40. The handle 10 has a first end and a second end; one end of the staple track 20 is hinged to the handle 10 via a first hinge shaft 50, which is located between the first end and the second end of the handle 10, and the other end of the staple track 20 has a staple outlet 21; one end of the staple holder 30 is hinged to the staple track 20 via the first hinge shaft 50, and the other end of the staple holder 30 is provided with a lower staple groove 31. The nail slot 31 is opposite to the nail outlet 21; the trigger 40 includes a connecting part 41 and a grip part 42. The connecting part 41 is connected to the grip part 42. The end of the connecting part 41 away from the grip part 42 is hinged to the handle 10 through a second hinge shaft 60. The second hinge shaft 60 is located between the first end of the handle 10 and the first hinge shaft 50. In the unloaded working condition and when the trigger 40 is gripped, the connecting part 41 can abut against the nail seat 30 so that there is a set safe distance between the grip part 42 and the handle 10.

[0026] The handheld stapler provided in this embodiment allows the user to hold the handle 10 and trigger 40 by hand during use. For example, see [link to documentation]. Figure 4As shown, the thumb and thenar eminence are located on the upper surface and side of the handle 10. The thenar eminence is usually gripped in the area between the first hinge shaft 50 and the second end of the handle 10. The other four fingers are located in the grip portion 42, which is used to drive the trigger 40 to move and drive the nail seat 30 to move closer to the nail track 20. In the no-load condition and when the trigger 40 is gripped, that is, when the object to be stapled is not placed, gripping the trigger 40 causes the connecting portion 41 to abut against the nail seat 30, thereby ensuring that the trigger 40 no longer moves, so that there is a set safe distance between the grip portion 42 of the trigger 40 and the handle 10.

[0027] It should be understood that, see Figure 5 As shown, the set safety distance d1 is the minimum safety distance to effectively reduce the risk of pinching. During normal use, the object to be stapled is placed between the lower staple slot 31 and the staple outlet 21. At this time, when the trigger 40 is tightened to complete the staple, the connecting part 41 will not abut against the staple seat 30, and the distance between the hand grip 42 and the handle 10 will be greater than the set safety distance. Therefore, it will be safer during normal use.

[0028] Generally, the larger the safety distance, the lower the risk of being pinched. However, if the safety distance is set too large, it will affect the stapler's labor-saving efficiency, making it more strenuous to use. Therefore, to balance the labor-saving effect of the stapler, the safety distance d1 is set in the range of 3~5mm.

[0029] In some embodiments, when the trigger 40 is in an unloaded state and the trigger is gripped, there is also a gap between the grip 42 and the pin seat 30. That is, the grip 42 is kept at a distance from the pin seat 30 and the handle 10, thereby further reducing the risk of the skin on the palm side being pinched.

[0030] It should be noted that, since the grip portion 42 at least partially covers the outside of the connecting portion 41, when the connecting portion 41 abuts against the nail seat 30, the end of the grip portion 42 near the second hinge shaft 60 may abut against the nail seat 30, typically in point contact or line contact, see [link to relevant documentation]. Figure 4 As shown, in a normal gripping state, the palm does not cover this contact position. Therefore, even if the end of the grip 42 near the second hinge axis 60 abuts against the pin seat 30, the risk of pinching the hand will not be significantly increased.

[0031] In some embodiments, see Figure 5As shown, the grip 10 has a first concave surface 121 on the side facing the trigger 40, and the hand grip 42 has a second concave surface 421 on the side facing the grip 10. The maximum distance between the first concave surface 121 and the second concave surface 421 is greater than a set safety distance. Specifically, under no-load conditions and when the trigger 40 is gripped, the maximum distance between the first concave surface 121 and the second concave surface 421 refers to the distance d2 between the deepest point of the first concave surface 121 and the deepest point of the second concave surface 421, where d2 is greater than d1.

[0032] When in use, the palm covers the narrow area between the grip portion 42 and the corresponding handle portion 10 (e.g., Figure 5 The area between the two dotted lines in the diagram is typically where skin and flesh tend to accumulate closer to the center (especially for users with fleshy palms). Therefore, by setting a first concave surface 121 and a second concave surface 421, the deepest point of the first concave surface 121 and the deepest point of the second concave surface 421 are roughly located in the middle of this area. Since the distance d2 between the deepest point of the first concave surface 121 and the deepest point of the second concave surface 421 is greater than the set safety distance d1, the risk of skin and flesh being pinched in this middle position can be further reduced.

[0033] In some embodiments, see Figure 2 and Figure 3 As shown, the position of the first hinge shaft 50 divides the handle 10 into a first handle segment 11 and a second handle segment 12, with a smooth transition between the first handle segment 11 and the second handle segment 12. In use, the user's palm primarily grips the second handle segment 12, while the thumb typically rests on the first handle segment 11. The handle 10 has a cavity, with a portion of the pin track 20 and pin seat 30 located within the cavity, and another portion of the pin track 20 and pin seat 30 located outside the cavity. For example, the length of the portion of the pin seat 30 located outside the cavity is greater than the length of the portion of the pin seat 30 located inside the cavity. This increases the distance between the second handle segment 12 and the hand grip 42 in the free state. Compared to existing V-shaped gaps, the space between the second handle segment 12 and the hand grip 42 in the free state in this embodiment of the disclosure is larger. When gripped, this also helps to ensure a safe setting distance and prevents the hand grip 42 from overlapping with the handle 10.

[0034] In some embodiments, see Figure 5 As shown, under no-load conditions and with the trigger 40 in a gripped state, the position where the pin seat 30 abuts against the connecting part 41 is the first position P1, and the position where the pin seat 30 intersects with the first concave surface 121 is the second position P2. The second position P2 is located between the first position P1 and the second hinge shaft 60. This avoids the hand grip 42 from overlapping with the handle 10.

[0035] For example, the connecting part 41 includes two connecting plates 411, which are respectively located on both sides of the nail seat 30. Simultaneously, the two connecting plates 411 are located on both sides of the handle 10. A second hinge shaft 60 passes through the handle 10, and its two ends are riveted to the two connecting plates 411 respectively. The connecting plates 411 are rotatable relative to the handle 10 about the axis of the second hinge shaft 60. See also... Figure 5 As shown, both connecting plates 411 have bent sections 412, and the distance between the two bent sections 412 is less than the width of the pin seat 30. The grip portion 42 at least partially covers the outer surface of the portion of the bent section 412 of the connecting plate 411 away from the second hinge axis 60. Under no-load conditions and with the trigger 40 in the gripped state, the bent section 412 abuts against the pin seat 30. Therefore, the first position P1 refers to the position where the bent section 412 abuts against the pin seat 30. Since the second position P2 is located between the first position P1 and the second hinge axis 60, it ensures that there is a gap between the grip portion 42 and the pin seat 30, while ensuring that the grip portion 42 does not overlap with the handle 10.

[0036] In some embodiments, see Figure 3 As shown, the angle α between the extension direction of the nail track 20 (represented by the dashed line) and the line connecting the first hinge shaft 50 and the second end of the handle 10 (represented by the dashed line) is an obtuse angle. Specifically, a set plane is taken, which is perpendicular to the axis of the first hinge shaft 50 and passes through the endpoint of the second end of the handle 10, wherein the endpoint of the second end of the handle 10 refers to the farthest point of the second end, and the vertical distance between this endpoint and the end face of the nail track 20 with the nail outlet 21 is the largest. Normally, the end face of the nail track 20 with the nail outlet 21 is generally planar.

[0037] See Figure 3 and Figure 4 As shown, from the first hinge axis 50 toward the second end of the handle 10, the handle 10 has a tendency to bend toward the trigger 40. When the user holds the stapler to operate, even if the staple outlet 21 is angled downward, for example when sealing a bag (such as a takeout bag), the wrist can still maintain a natural bending angle, which can reduce wrist fatigue during long-term use.

[0038] In some embodiments, the pin seat 30 is provided with a limiting portion, and the connecting portion 41 is provided with a limiting mating portion. The limiting mating portion cooperates with the limiting portion to limit the maximum stroke of the trigger 40 under no-load conditions. The maximum stroke of the trigger 40 under no-load conditions refers to the maximum angle of rotation of the trigger 40 around the second hinge axis 60 when the trigger 40 moves from the free state to the gripped state under no-load conditions.

[0039] In some embodiments, see Figure 2 and Figure 5As shown, the limiting part includes a pin 32, and the limiting mating part is a limiting hole 4111. The hole wall of the limiting hole 4111 includes a first hole wall 41111 and a second hole wall 41112. The first hole wall 41111 is located on the side of the second hole wall 41112 away from the second hinge shaft 60. The pin 32 passes through the limiting hole 4111. In the free state, the pin 32 abuts against the first hole wall 41111. In the no-load working condition and when the trigger 40 is in the gripped state, the pin 32 abuts against the second hole wall 41112.

[0040] For example, both connecting plates 411 are provided with limiting holes 4111, and both sides of the nail holder 30 are provided with limiting portions, that is, both sides of the nail holder 30 are provided with pins 32. The pins 32 on the same side cooperate with the limiting holes 4111, and the pins 32 pass through the limiting holes 4111. The wall of the limiting hole 4111 also includes a third hole wall 41113. The first hole wall 41111 is located on the side of the second hole wall 41112 away from the second hinge axis 60, and the third hole wall 41113 connects the first hole wall 41111 and the second hole wall 41112, and the third hole wall 41113 is located on the side of the pin 32 away from the first hinge axis 50; see also Figure 2 As shown, in the free state, pin 32 abuts against the first hole wall 41111, see [reference]. Figure 5 As shown, under no-load conditions and with the trigger 40 in the gripped state, the pin 32 abuts against the second hole wall 41112, and the third hole wall 41113 is configured to contact the pin 32 when the trigger 40 moves toward the grip 10, and drive the pin seat 30 to move toward the pin track 20 via the pin 32.

[0041] During the movement of the trigger 40 towards the grip 10 by driving the trigger 40 with a finger, the third hole wall 41113 can always be in contact with the pin 32 and apply a force to the pin 32. The pin 32 drives the pin seat 30 to rotate around the axis of the first hinge shaft 50 to move towards the pin track 20 until the pin 32 abuts against the second hole wall 41112.

[0042] It should be understood that, see Figure 2 and Figure 6 As shown, the handheld stapler also includes a staple pressing plate 70, which is connected to the first end of the handle 10. The staple pressing plate 70 is aligned with the staple outlet 21 and is used to press the staples located in the staple outlet 21 into the staple groove 31.

[0043] The structure of the stapler 70 and the working principle of the handheld stapler are things that should be understood by those skilled in the art, and are well known and easy to implement for them. Therefore, this embodiment will not describe them in detail.

[0044] When the device is unloaded and the trigger 40 is gripped, the pressure plate 70 abuts against the bottom of the lower nail groove 31, the pin 32 abuts against the second hole wall 41112, and the bent section 412 abuts against the nail seat 30.

[0045] During normal use, the item to be bound is placed between the lower staple slot 31 and the staple outlet 21. When gripped, the staple pressing plate 70 engages with the lower staple slot 31 to complete the binding. However, due to the presence of the item to be bound, the staple pressing plate 70 does not contact the bottom of the lower staple slot 31. At the same time, the pin 32 does not abut against the second hole wall 41112, and the bent section 412 does not abut against the staple seat 30. At this time, the trigger 40 cannot reach its maximum stroke, and the distance between the hand grip and the handle will be greater than the set safety distance, further reducing the risk of pinching injury.

[0046] In some embodiments, the handheld stapler also includes a stop disposed between the handle 10 and the trigger 40 to maintain a predetermined safe distance between the handle 10 and the trigger 40. By providing the stop, the risk of hand injury during use can be further reduced. For example, even if the bent section 412 of the connecting part 41 is at risk of deformation and thus unable to abut against the staple holder 30 when the user uses extreme grip force, the presence of the stop can still maintain a safe predetermined distance between the handle 10 and the trigger 40.

[0047] It should be understood that the stop should be positioned as close as possible to the second end of the grip 10 and the trigger 40, and the size of the stop should be as small as possible, as long as it can maintain the set safe distance between the grip 10 and the trigger 40.

[0048] In some embodiments, see Figures 6 to 10 As shown, the stop portion includes a first stop portion and a second stop portion. The first stop portion is connected to the grip 10, and the second stop portion is connected to the trigger 40. In the no-load condition and when the trigger 40 is gripped, the first stop portion can restrict the movement of the second stop portion. For example, the second stop portion abuts against the first stop portion, thereby stopping the movement of the trigger 40.

[0049] In some embodiments, when the second stop abuts against the first stop, the connecting portion 41 abuts against the nail seat 30.

[0050] In some embodiments, the connecting portion 41, the nail path 20, and the nail seat 30 may be made of metal, such as stainless steel. The handle 10 and the grip portion 42 may be made of non-metallic materials, such as plastic. The first stop portion is integrally formed with the handle 10, and the second stop portion is integrally formed with the trigger 40.

[0051] In some embodiments, one of the first stop and the second stop is a plug-in part 81 and the other is a plug-in mating part 82. The plug-in mating part 82 can cooperate with the plug-in part 81 to maintain a set safe distance between the grip 10 and the trigger 40.

[0052] The insertion and engagement between the insertion and engagement part 82 and the insertion part 81 can play a certain guiding role, which helps to prevent the grip 10 and the trigger 40 from being accidentally deformed by other external forces. The insertion and engagement part 82 can still engage with the insertion part 81 to maintain the set safe distance between the grip 10 and the trigger 40.

[0053] In some embodiments, see Figure 8 As shown, the first stop is a plug-in part 81, which is provided with a plug hole 811; the second stop is a plug-in mating part 82, at least a portion of which can be inserted into the plug hole 811.

[0054] In one specific embodiment, the insertion mating part 82 includes two cross-arranged stiffeners 821, for example, the two stiffeners 821 can be perpendicular.

[0055] In other embodiments, the insertion mating part 82 may also be a columnar structure.

[0056] It should be noted that the form of the plug-in mating part 82 is not limited to the above two. Other forms of plug-in mating parts 82 can be selected according to actual needs, as long as they can be inserted into the socket 811 to achieve the limiting function.

[0057] Of course, the mating part 82 can also be fully inserted into the socket 811.

[0058] In other embodiments, the first stop may be a plug-in mating part 82 and the second stop may be a plug-in part 81.

[0059] In some embodiments, the insertion mating part 82 is provided with a boss 8211, which can abut against the end face of the insertion part 81 when the device is unloaded and the trigger 40 is gripped. See, for example, [link to example]. Figure 8 As shown, the stiffener 821 can be convex in shape to form a boss 8211.

[0060] In some embodiments, see Figure 2 As shown, a protective layer 90 is provided on the surface of the handle 10 away from the hand grip 42, and a protective layer 90 is provided on the surface of the hand grip 42 away from the handle 10.

[0061] In some embodiments, the protective layer 90 can be made of an elastomeric material, such as thermoplastic elastomer (TPE), liquid silicone rubber, or vulcanized silicone rubber. Taking TPE as an example, TPE can be double-injected with the plastic grip portion 42 and handle 10. The softness of TPE can distribute pressure, reducing the impact of direct contact between the user's hand and the hard handle 10 or trigger 40, making the grip 10 and trigger 40 more comfortable to the touch, thus making prolonged holding and operation more comfortable and reducing hand fatigue.

[0062] At the same time, TPE has an excellent coefficient of friction, which allows it to maintain a high level of friction even when the palms are sweaty or in a wet environment, providing sufficient grip and enhancing operational stability.

[0063] Furthermore, TPE has a low thermal conductivity, making it an excellent heat insulation material. In summer, when temperatures are high, it effectively blocks ambient heat (such as from direct sunlight) from being conducted to the hand, keeping the grip 10 and trigger 40 at a relatively constant and comfortable temperature, preventing burns. In winter, when temperatures are low, it prevents heat from the hand from quickly dissipating to the cold metal or plastic, keeping it from feeling cold and enhancing the user experience.

[0064] Of course, the protective layer can also be made of other soft rubber materials with high coefficient of friction and low specific heat capacity.

[0065] In other embodiments, the protective layer 90 may be provided only on the surface of the handle 10 away from the grip portion 42, or only on the surface of the grip portion 42 away from the handle 10.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A hand-held stapler characterized by, include: A grip having a first end and a second end; The nail track has one end hinged to the handle via a first hinge axis located between a first end and a second end of the handle, and the other end of the nail track has a nail outlet. The nail holder has one end hinged to the nail track via the first hinge shaft, and the other end of the nail holder is provided with a lower nail groove, which is opposite to the nail outlet. as well as A trigger, comprising a connecting portion and a grip portion, wherein the connecting portion is connected to the grip portion, and one end of the connecting portion away from the grip portion is hinged to the handle via a second hinge axis, the second hinge axis being located between a first end of the handle and a first hinge axis; wherein, under no-load conditions and when the trigger is gripped, the connecting portion can abut against the pin seat to provide a predetermined safe distance between the grip portion and the handle.

2. The hand-held stapler of claim 1, wherein, The pin holder is provided with a limiting part, and the connecting part is provided with a limiting mating part. The limiting mating part cooperates with the limiting part to limit the maximum stroke of the trigger under no-load conditions.

3. The hand-held stapler of claim 2, wherein, The limiting part includes a pin, the limiting mating part is a limiting hole, the hole wall of the limiting hole includes a first hole wall and a second hole wall, the first hole wall is located on the side of the second hole wall away from the second hinge axis, and the pin passes through the limiting hole; in the free state, the pin abuts against the first hole wall, and in the no-load working condition and the trigger is in the gripped state, the pin abuts against the second hole wall.

4. The hand-held stapler of claim 1, wherein, The grip has a first concave surface on the side facing the trigger, and the hand grip has a second concave surface on the side facing the grip. The maximum distance between the first concave surface and the second concave surface is greater than the set safety distance.

5. The hand-held stapler of claim 4 wherein, The position where the nail seat abuts against the connecting part is the first position, and the position where the nail seat intersects with the first concave surface is the second position. The second position is located between the first position and the second hinge axis.

6. The handheld stapler according to claim 1, characterized in that, It also includes a stop portion disposed between the grip and the trigger to maintain a set safe distance between the grip and the trigger.

7. The hand-held stapler of claim 6 wherein, The stop portion includes a first stop portion and a second stop portion. The first stop portion is connected to the grip, and the second stop portion is connected to the trigger. Under no-load conditions and when the trigger is gripped, the first stop portion can restrict the movement of the second stop portion.

8. The hand-held stapler of claim 7, wherein, One of the first stop and the second stop is a plug-in part, and the other is a plug-in mating part. The plug-in mating part can cooperate with the plug-in part to maintain a set safe distance between the grip and the trigger.

9. The hand-held stapler of claim 8 wherein, The first stop portion is a plug-in portion, and the plug-in portion is provided with a plug hole; the second stop portion is a plug-in mating portion, and at least a portion of the plug-in mating portion can be inserted into the plug hole.

10. The handheld stapler according to claim 9, characterized in that, The insertion mating part is provided with a boss, which can abut against the end face of the insertion part when the machine is unloaded and the trigger is gripped.

11. The hand-held stapler of claim 1, wherein, The set safe distance ranges from 3 to 5 mm.

12. The handheld stapler according to claim 1, characterized in that, The angle between the extension direction of the nail track and the line connecting the first hinge shaft and the second end of the handle is an obtuse angle.

13. The hand-held stapler according to any one of claims 1 to 12, wherein, The surface of the handle away from the handgrip is provided with a protective layer, and / or the surface of the handgrip away from the handle is provided with a protective layer.

14. The hand-held stapler of claim 13, wherein, The material of the protective layer is elastomer material.

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