A striking tool gun head adjustment mechanism

Abstract

The utility model provides a striking tool gun head adjustment mechanism, which includes a gun head, a gun head connector, and a limiter. The end face of one of the gun head connector and the gun head is provided with a plug-in slot, and one end of the other is provided with a plug-in portion. The inner side wall of the plug-in slot is provided with an internal thread, and the peripheral side surface of the plug-in portion is provided with an external thread. The outer side wall of the plug-in slot is provided with a through hole, and the peripheral side surface of the plug-in portion is provided with a matching portion. The limiter is detachably provided on the outer side wall of the plug-in slot, and the limiter is provided with a limiter portion. The limiter portion extends into the plug-in slot from the through hole and forms a limit match with the matching portion. The gun head and the gun head connector are directly connected by threads to achieve the adjustment of the nailing depth, and the gun head is fixed by the limiter. The structure of the striking tool gun head adjustment mechanism is simple and compact, and with the help of the releasable locking structure of the limiter, the nailing depth adjustment through the striking tool gun head adjustment mechanism has the advantages of convenient adjustment and reliable operation.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of building construction, and in particular to a gun head adjustment mechanism for a striking tool. Background Art

[0002] Nail guns and other striking tools for striking fasteners are widely used in the construction, decoration and other industries. Their working principle is: press the gun nozzle down and press the switch, the motor is started, and the firing pin is driven from the initial locked ready position through the lifting mechanism to drive the piston to compress the air. After the firing pin is disengaged from the lifting mechanism, it is suddenly released to strike the row of nails in the nail magazine that are pushed into the nail seat by the nail pusher, causing them to shoot out from the gun nozzle.

[0003] During use, in order to meet the requirements of different nailing depths, various nail guns are generally provided with nailing depth adjustment mechanisms. Existing nailing depth adjustment mechanisms usually have the problems of complex and non-compact structures and inconvenient adjustment. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide a striking tool gun head adjustment mechanism, aiming to solve the problems of the existing nailing depth adjustment mechanism having a complex and non-compact structure and inconvenient adjustment.

[0005] In order to solve the above technical problems, the embodiment of the utility model provides a striking tool gun head adjustment mechanism, comprising:

[0006] Gun head;

[0007] A gun head connector, wherein the end surface of one of the gun head connector and the gun head is provided with a plug-in groove, and one end of the other is provided with a plug-in portion plugged into the plug-in groove, the inner side wall of the plug-in groove is provided with an internal thread, and the peripheral side surface of the plug-in portion is provided with an external thread that forms a threaded match with the internal thread, so that the gun head can be movably adjusted along the groove depth direction of the plug-in groove relative to the gun head connector, the outer side wall of the plug-in groove is penetrated by a through hole, and the peripheral side surface of the plug-in portion is provided with a matching portion arranged along the groove depth direction of the plug-in groove;

[0008] A limiting member, wherein the limiting member is detachably arranged on the outer side wall of the plug-in slot, and the limiting member is provided with a limiting portion; when the limiting member is arranged on the outer side wall of the plug-in slot, the limiting portion extends into the plug-in slot from the through hole and forms a limiting fit with the matching portion to limit the rotation of the gun head relative to the gun head connector.

[0009] Preferably, the matching portion is located in a region on the peripheral side surface of the plug-in portion where the external thread is provided.

[0010] Preferably, the via hole penetrates a region where the inner side wall of the plug-in slot is provided with the internal thread.

[0011] Preferably, a plurality of the mating portions are arranged on the peripheral side surface of the plug-in portion corresponding to each of the limiting portions at intervals along the circumference of the plug-in slot; and a plurality of the via holes correspond to the limiting portions one by one and are arranged at intervals along the circumference of the plug-in slot.

[0012] Preferably, the matching portion is a slot extending along the slot depth direction of the plug-in slot, and the limiting portion is a snap-fitting portion. When the limiting member is arranged on the outer side wall of the plug-in slot, the snap-fitting portion forms a snap-fitting with the slot.

[0013] Preferably, the peripheral side surface of the plug-in portion is provided with an annular boss extending along the circumferential direction of the plug-in groove, the external thread and the clamping groove are both provided on the peripheral side surface of the annular boss, and the clamping groove passes through two opposite end surfaces of the annular boss in the groove depth direction of the plug-in groove; the via hole is extended along the groove width direction of the clamping groove.

[0014] Preferably, the limiting member is a retaining spring, which is clamped on the outer side wall of the plug-in slot. The retaining spring includes two elastic arms extending along the circumference of the plug-in slot, and the two ends of the two elastic arms far away from each other are respectively provided with two limiting parts, and the outer side wall of the plug-in slot is provided with two through holes corresponding to the two limiting parts.

[0015] Preferably, the two ends of the two elastic arms that are away from each other are bent and extended toward the bottom wall of the plug-in slot to form two clamping arms; the two ends of the two elastic arms that are away from each other are bent toward a direction approaching each other to form the two limiting portions.

[0016] Preferably, an outer side wall of the plug-in slot is provided with a mounting slot, the shape of the mounting slot is adapted to the shape of the retaining spring, and at least a portion of the retaining spring is engaged with the mounting slot.

[0017] Preferably, the outer side wall of the plug-in slot is provided with two receiving slots corresponding to the two elastic arms, the two clamping arms are respectively located in the two receiving slots, and the two through holes are respectively provided on the bottom walls of the two receiving slots.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the gun head and the gun head connecting piece are directly connected by threads to achieve the adjustment of the nailing depth, and the gun head is fixed by a limiter to prevent the gun head from rotating after the nailing depth is adjusted, thereby providing an angled nailing depth adjustment, the structure of the striking tool gun head adjustment mechanism is simple and compact, and with the help of the releasable locking structure of the limiter, the nailing depth adjustment through the striking tool gun head adjustment mechanism has the advantages of convenient adjustment and reliable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0020] Figure 1 It is a three-dimensional structural diagram of the striking tool gun head adjustment mechanism in the embodiment of the utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of the planar structure of the adjusting mechanism of the gun head of the middle striking tool;

[0022] Figure 3 for Figure 1 A cross-sectional view of the adjustment mechanism of the gun head of the middle striking tool;

[0023] Figure 4 for Figure 1 An exploded view of the adjustment mechanism of the gun head of a medium striking tool;

[0024] Figure 5 for Figure 4 One of the planar structural diagrams of the middle retainer;

[0025] Figure 6 for Figure 4 The second schematic diagram of the planar structure of the middle retaining spring.

[0026] Description of the figures of the utility model:

[0027] The striking tool gun head adjustment mechanism 100, the gun head 1, the plug-in portion 11, the external thread 12, the matching portion 13, the clamping groove 13a, the annular boss 14, the gun head connector 2, the plug-in groove 21, the internal thread 22, the through hole 23, the installation groove 24, the accommodating groove 25, the limiter 3, the retaining spring 3a, the limiter portion 31, the clamping protrusion 31a, the elastic arm 32, and the clamping arm 33.

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0032] The utility model provides a striking tool gun head adjustment mechanism, which can be used in striking tools such as nail guns. Figures 1 to 6 A preferred embodiment of the striking tool gun head adjustment mechanism provided by the utility model is shown.

[0033] See also Figure 3 In this embodiment, the striking tool gun head adjustment mechanism 100 includes a gun head 1, a gun head connecting member 2 and a limiting member 3.

[0034] See also Figures 1 to 4 A plug-in groove 21 is provided on the end face of one of the gun head connector 2 and the gun head 1, and a plug-in portion 11 plugged into the plug-in groove 21 is provided at one end of the other, an internal thread 22 is provided on the inner side wall of the plug-in groove 21, and an external thread 12 that forms a threaded match with the internal thread 22 is provided on the peripheral side surface of the plug-in portion 11, so that the gun head 1 can be movably adjusted along the groove depth direction of the plug-in groove 21 relative to the gun head connector 2, a through hole 23 is penetrated on the outer side wall of the plug-in groove 21, and a matching portion 13 arranged along the groove depth direction of the plug-in groove 21 is provided on the peripheral side surface of the plug-in portion 11.

[0035] Specifically, the striking tool gun head adjustment mechanism 100 is installed on the striking tool body, and the striking tool gun head adjustment mechanism 100 is provided with an ejection end of the striking tool for ejecting fasteners. One end of the gun head 1 and one end of the gun head connector 2 are plugged into the plug slot 21 through the plug-in portion 11, and the end of the gun head connector 2 away from the gun head 1 is used to be installed on the striking tool body, so that the striking tool gun head adjustment mechanism 100 is installed on the striking tool body through the gun head connector 2, and the end of the gun head 1 away from the gun head connector 2 is the ejection end of the striking tool.

[0036] The gun head 1 and the gun head connector 2 are provided with a plug-in portion 11 and a plug-in slot 21, respectively. The gun head 1 may be provided with the plug-in portion 11, and the gun head connector 2 may be provided with the plug-in slot 21; or the gun head 1 may be provided with the plug-in slot 21, and the gun head connector 2 may be provided with the plug-in portion 11. The following description will be made by taking the example that the plug-in portion 11 is provided at one end of the gun head 1 close to the gun head connector 2, and the plug-in slot 21 is provided on the end surface of the gun head connector 2 close to the gun head 1.

[0037] The shape of the plug-in portion 11 is generally compatible with the shape of the plug-in slot 21. For example, see Figures 1 to 4 In this embodiment, the plug-in portion 11 is cylindrical, the plug-in groove 21 is a circular groove, and the gun head 1 can rotate relative to the gun head connector 2 along the circumferential direction of the plug-in groove 21. Since the inner wall of the plug-in groove 21 is provided with an internal thread 22, and the peripheral side surface of the plug-in portion 11 is provided with an external thread 12, the gun head 1 can be adjusted relative to the gun head connector 2 along the groove depth direction of the plug-in groove 21 by rotating the gun head 1, thereby realizing the adjustment of the nailing depth of the striking tool.

[0038] The gun head connector 2 is provided with an internal thread 22 and a through hole 23, and the internal thread 22 and the through hole 23 are respectively provided on the inner and outer side walls of the plug-in slot 21. The through hole 23 penetrates the area on the inner side wall of the plug-in slot 21 where the internal thread 22 is provided, that is, the through hole 23 and the internal thread 22 are opposite to each other in the thickness direction of the side wall of the plug-in slot 21. Such a configuration is conducive to reducing the groove depth of the plug-in slot 21, so that the structure of the striking tool gun head adjustment mechanism 100 becomes compact.

[0039] The gun head 1 is provided with a matching portion 13 arranged along the groove depth direction of the plug-in slot 21 corresponding to the through hole 23, and the matching portion 13 is arranged along the groove depth direction of the plug-in slot 21. The matching portion 13 may be arranged to extend along the groove depth direction of the plug-in slot 21, so that after the gun head 1 is rotated and adjusted, the through hole 23 can still be opposite to part of the matching portion 13; or a plurality of matching portions 13 may be arranged along the groove depth direction of the plug-in slot 21, so that after the gun head 1 is rotated and adjusted, the through hole 23 can still be opposite to one matching portion 13. The following will take the matching portion 13 arranged along the groove depth direction of the plug-in slot 21 as an example for description.

[0040] An external thread 12 and a matching portion 13 are provided on the gun head 1. The matching portion 13 is located in the area where the external thread 12 is provided on the circumferential side surface of the plug-in portion 11, that is, the circumferential side surface of the plug-in portion 11 is divided into a first setting area and a second setting area along the circumference of the plug-in groove 21. The external thread 12 is provided in the first setting area, and the matching portion 13 is provided in the second setting area. Such a setting is conducive to reducing the length of the plug-in portion 11, so that the structure of the striking tool gun head adjustment mechanism 100 becomes compact.

[0041] See also Figures 1 to 4 The limiting member 3 is detachably arranged on the outer wall of the plug-in slot 21, and a limiting portion 31 is arranged on the limiting member 3; when the limiting member 3 is arranged on the outer wall of the plug-in slot 21, the limiting portion 31 extends into the plug-in slot 21 from the through hole 23 and forms a limiting fit with the matching portion 13 to limit the rotation of the gun head 1 relative to the gun head connector 2.

[0042] Specifically, the limiting member 3 is detachably arranged outside one end of the gun head connecting member 2 close to the gun head 1, and a limiting portion 31 is arranged on the limiting member 3 corresponding to the through hole 23 on the gun head connecting member 2. When the nailing depth of the striking tool needs to be adjusted, it is not necessary to remove the limiting member 3 from the gun head connecting member 2. It is only necessary to overcome the limiting force of the limiting member 3 to allow the gun head 1 to rotate so that the limiting portion 31 rotates on the gun head 1, and the nailing depth can be adjusted.

[0043] In addition to the above adjustment method, the limiter 3 can also be removed from the gun head connector 2 first, and then the nailing depth can be adjusted by rotating the gun head 1. After adjusting the nailing depth of the striking tool, the limiter 3 is installed on the gun head connector 2 again, and the limiter portion 31 on the limiter 3 can extend from the through hole 23 into the plug-in slot 21, and form a limit fit with the matching portion 13 on the gun head 1, so that the limiter portion 31 and the matching portion 13 can limit the gun head 1 from rotating after the nailing depth is adjusted.

[0044] The limiting portion 31, the through hole 23, and the matching portion 13 are arranged correspondingly, and the number of the limiting portion 31 is usually equal to the number of the through hole 23, wherein the through hole 23 may be provided with one, or a plurality of through holes 23 may be provided at intervals along the circumference of the plug slot 21. Optionally, please refer to Figures 1 to 4 In this embodiment, a plurality of through holes 23 and limiting portions 31 are arranged one by one and at intervals along the circumference of the plug-in slot 21 . For example, two through holes 23 are arranged on the gun head connector 2 , and correspondingly, two limiting portions 31 are also arranged.

[0045] The limiting portions 31 and the matching portions 13 are arranged in correspondence, and the limiting portions 31 and the matching portions 13 may be arranged in a one-to-one correspondence, that is, the number of the limiting portions 31 is equal to the number of the matching portions 13; or one limiting portion 31 corresponds to a plurality of matching portions 13, that is, the number of the matching portions 13 is an integer multiple of the number of the limiting portions 31. Figures 1 to 4 In this embodiment, a plurality of mating portions 13 are arranged on the circumferential side surface of the plug-in portion 11 corresponding to each limiting portion 31 and spaced apart along the circumferential direction of the plug-in groove 21. For example, two limiting portions 31 are arranged, and six mating portions 13 are arranged on the gun head 1 corresponding to the two limiting portions 31.

[0046] The gun head 1 of the utility model is directly connected to the gun head connector 2 by threads to adjust the nailing depth, and the gun head 1 is fixed by the limiter 3 to prevent the gun head 1 from rotating after the nailing depth is adjusted, thereby providing angled nailing depth adjustment. The structure of the striking tool gun head adjustment mechanism 100 is simple and compact, and with the help of the releasable locking structure of the limiter 3, the nailing depth adjustment through the striking tool gun head adjustment mechanism 100 has the advantages of convenient adjustment and reliable operation.

[0047] The rotation of the gun head 1 can be limited by the limiting cooperation between the limiting portion 31 and the matching portion 13. There are many specific ways to set the limiting cooperation between the limiting portion 31 and the matching portion 13. For example, the limiting cooperation between the limiting portion 31 and the matching portion 13 can be a magnetic limiting cooperation, abutting limiting cooperation or clamping limiting cooperation. Figures 1 to 4 In this embodiment, the matching portion 13 is a card slot 13a extending along the groove depth direction of the plug-in groove 21, and the limiting portion 31 is a card protrusion 31a; when the limiting member 3 is arranged on the outer side wall of the plug-in groove 21, the card protrusion 31a forms a snap fit with the card slot 13a.

[0048] Specifically, when the limit member 3 is installed on the gun head connector 2, the latch 31a on the limit member 3 extends from the through hole 23 into the slot 13a, so that the latch 31a and the slot 13a form a snap fit to limit the rotation of the gun head 1, and the limit portion 31 and the matching portion 13 are set as a snap limit fit, which makes the disassembly and assembly of the limit member 3 convenient and labor-saving.

[0049] For further information, see Figures 1 to 4 In the present embodiment, the through hole 23 is extended along the slot width direction of the card slot 13a. Such a configuration is conducive to the protrusion 31a entering the card slot 13a from the through hole 23, and the shape of the protrusion 31a can be set corresponding to the shape of the through hole 23, so that the rotation of the gun head 1 can be better limited by the snap-fit ​​between the protrusion 31a and the card slot 13a.

[0050] Optionally, see Figures 1 to 4 In this embodiment, an annular boss 14 extending along the circumferential direction of the plug-in groove 21 is provided on the circumferential side surface of the plug-in portion 11, and the external thread 12 and the clamping groove 13a are both provided on the circumferential side surface of the annular boss 14, and the clamping groove 13a passes through the two opposite end surfaces of the annular boss 14 in the groove depth direction of the plug-in groove 21.

[0051] Specifically, the external thread 12 is arranged on the annular boss 14, so that other structures on the plug-in portion 11 can avoid interfering with the threaded connection between the gun head 1 and the gun head connector 2. Similarly, the slot 13a is arranged on the annular boss 14, so that other structures on the plug-in portion 11 can avoid interfering with the snap fit between the snap protrusion 31a and the slot 13a.

[0052] The stopper 3 is detachably arranged on the gun head connector 2. The specific arrangement of the stopper 3 can be set according to the actual situation. For example, the stopper 3 can be a screw connection or a retaining spring. Figure 1 , Figure 3 and Figure 5 In the present embodiment, the limiting member 3 is a retaining spring 3a, which is clamped on the outer wall of the plug-in slot 21. The retaining spring 3a includes two elastic arms 32 extending along the circumference of the plug-in slot 21. Two limiting portions 31 are respectively provided at two ends of the two elastic arms 32 away from each other. Two through holes 23 are provided on the outer wall of the plug-in slot 21 corresponding to the two limiting portions 31.

[0053] Specifically, the two elastic arms 32 of the clip 3a are arranged in the form of arc-shaped arms extending along the circumference of the insertion slot 21, and one end of the two elastic arms 32 are connected to form the top of the clip 3a. The clip 3a can clamp the gun head connector 2 through the two elastic arms 32, so that the clip 3a is clamped and installed on one end of the gun head connector 2. The use of the clip 3a as the limiter 3 can make the disassembly and assembly of the limiter 3 more convenient and labor-saving.

[0054] Optionally, see Figures 1 to 4 In this embodiment, two ends of the two elastic arms 32 that are far away from each other are bent toward each other to form two limiting portions 31.

[0055] Specifically, the two ends of the two elastic arms 32 are bent away from each other to form two limit parts 31 (i.e., two locking protrusions 31a). When the nailing depth needs to be adjusted, it is only necessary to overcome the force of the retaining spring 3a to rotate the gun head 1, so that the locking protrusion 31a on the retaining spring 3a rotates on the gun head 1. In this way, when the locking protrusion 31a slides in and out of the slot 13a on the gun head 1, a staggered feeling will be formed, thereby improving the user experience.

[0056] Optionally, see Figure 1 , Figure 2 , Figure 4 and Figure 6 In this embodiment, two ends of the two elastic arms 32 that are away from each other are bent and extended toward the bottom wall of the insertion slot 21 to form two clamping arms 33.

[0057] Specifically, by arranging two clamping arms 33 on the clamping spring 3a to clamp the gun head connecting member 2, the clamping spring 3a can be firmly installed on the gun head connecting member 2, and the clamping spring 3a is not likely to be loosened.

[0058] Optionally, see Figures 3 to 6 In this embodiment, a mounting groove 24 is provided on the outer side wall of the plug-in groove 21 . The shape of the mounting groove 24 matches the shape of the retaining spring 3 a , and at least a portion of the retaining spring 3 a is engaged with the mounting groove 24 .

[0059] Specifically, the shape of the mounting groove 24 is adapted to the shape of the two elastic arms 32, and the two elastic arms 32 are located in the mounting groove 24. By setting the mounting groove 24 on the gun head connector 2, not only can the installation and positioning of the retaining spring 3a on the gun head connector 2 be achieved, but it is also beneficial to avoid the phenomenon of the retaining spring 3a loosening.

[0060] Optionally, see Figures 1 to 4 In this embodiment, two receiving grooves 25 are provided on the outer wall of the plug-in groove 21 corresponding to the two elastic arms 32 , the two clamping arms 33 are respectively located in the two receiving grooves 25 , and the two through holes 23 are respectively provided on the bottom walls of the two receiving grooves 25 .

[0061] Specifically, one end of the receiving groove 25 near the top of the clamping spring 3a penetrates the gun head connector 2 to form an insertion port of the receiving groove 25, so that the elastic arm 32 and the clamping arm 33 can be inserted into the receiving groove 25 from the insertion port, and one end of the elastic arm 32 provided with the clamping protrusion 31a and the clamping arm 33 both abut against the bottom wall of the receiving groove 25, and the through hole 23 is provided on the bottom wall of the receiving groove 25. The receiving groove 25 is provided on the gun head connector 2, and a relatively regular plane can be formed on the gun head connector 2 through the bottom wall of the receiving groove 25, which is not only conducive to the two elastic arms 32 and the two clamping arms 33 to better clamp the gun head connector 2, but also convenient for setting the through hole 23 on the gun head connector 2.

[0062] The gun head connector 2 is provided with an internal thread 22, and the gun head 1 is provided with an external thread 12, so that the two are connected by threads, and the gun head 1 is also provided with a plurality of slots 13a, which cooperate with the spring clip 3a. The spring clip 3a is used to fix the gun head 1 to prevent the gun head 1 from rotating. When the nailing depth needs to be adjusted, it is only necessary to overcome the force of the spring clip 3a to rotate the gun head 1, so that the protrusion 31a on the spring clip 3a rotates on the gun head 1, so that when the protrusion 31a slides in and out of the slot 13a on the gun head 1, a staggered feeling is formed, thereby improving the user experience.

[0063] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A striking tool gun head adjustment mechanism, characterized in that: include: Gun head; A gun head connector, wherein the end surface of one of the gun head connector and the gun head is provided with a plug-in groove, and one end of the other is provided with a plug-in portion plugged into the plug-in groove, the inner side wall of the plug-in groove is provided with an internal thread, and the peripheral side surface of the plug-in portion is provided with an external thread that forms a threaded match with the internal thread, so that the gun head can be movably adjusted along the groove depth direction of the plug-in groove relative to the gun head connector, the outer side wall of the plug-in groove is penetrated by a through hole, and the peripheral side surface of the plug-in portion is provided with a matching portion arranged along the groove depth direction of the plug-in groove; A limiting member, wherein the limiting member is detachably arranged on the outer side wall of the plug-in slot, and the limiting member is provided with a limiting portion; when the limiting member is arranged on the outer side wall of the plug-in slot, the limiting portion extends into the plug-in slot from the through hole and forms a limiting fit with the matching portion to limit the rotation of the gun head relative to the gun head connector.

2. The striking tool gun head adjustment mechanism according to claim 1, characterized in that: The matching portion is located in a region where the external thread is disposed on the peripheral side surface of the plug-in portion.

3. The striking tool gun head adjustment mechanism according to claim 1, characterized in that: The through hole passes through a region where the inner side wall of the plug-in slot is provided with the internal thread.

4. The striking tool gun head adjustment mechanism according to claim 1, characterized in that: The peripheral side surface of the plug-in portion is provided with a plurality of the matching portions at intervals along the circumference of the plug-in slot corresponding to each of the limiting portions; and a plurality of the via holes are provided in one-to-one correspondence with the limiting portions and at intervals along the circumference of the plug-in slot.

5. The striking tool gun head adjustment mechanism according to any one of claims 1 to 4, characterized in that: The matching portion is a slot extending along the slot depth direction of the plug-in slot, and the limiting portion is a locking protrusion; when the limiting member is arranged on the outer side wall of the plug-in slot, the locking protrusion forms a snap fit with the slot.

6. The striking tool gun head adjustment mechanism according to claim 5, characterized in that: The peripheral side surface of the plug-in portion is provided with an annular boss extending along the circumferential direction of the plug-in groove, the external thread and the clamping groove are both provided on the peripheral side surface of the annular boss, and the clamping groove penetrates the two opposite end surfaces of the annular boss in the groove depth direction of the plug-in groove; the through hole is extended along the groove width direction of the clamping groove.

7. The striking tool gun head adjustment mechanism according to any one of claims 1 to 4, characterized in that: The limiting member is a retaining spring, which is clamped on the outer side wall of the plug-in slot. The retaining spring includes two elastic arms extending along the circumference of the plug-in slot. Two limiting parts are respectively provided at two ends of the two elastic arms away from each other, and the outer side wall of the plug-in slot is provided with two through holes corresponding to the two limiting parts.

8. The striking tool gun head adjustment mechanism according to claim 7, characterized in that: Two ends of the two elastic arms that are away from each other are bent and extended toward the bottom wall of the plug-in slot to form two clamping arms; Two ends of the two elastic arms that are far away from each other are bent toward each other to form the two limiting parts.

9. The striking tool gun head adjustment mechanism according to claim 8, characterized in that: The outer side wall of the plug-in slot is provided with a mounting slot, the shape of the mounting slot is adapted to the shape of the clamping spring, and at least a part of the clamping spring is clamped in the mounting slot.

10. The striking tool gun head adjustment mechanism according to claim 9, characterized in that: The outer side wall of the plug-in slot is provided with two receiving slots corresponding to the two elastic arms, the two clamping arms are respectively located in the two receiving slots, and the two through holes are respectively provided on the bottom walls of the two receiving slots.

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