Hand tool

Abstract

The present application belongs to the technical field of hand tools, and particularly relates to a hand tool. The hand tool comprises a machine body, a working component and a mounting mechanism. The machine body is provided with a transmission rod movably arranged. The working component is provided with a piston rod which is detachably connected with the transmission rod. The mounting mechanism comprises a mounting assembly and a connecting body. The mounting assembly is provided with a mounting main body. The connecting body is arranged on the working component and is detachably connected with the mounting main body. The piston rod is movably arranged in the connecting body. The mounting main body is provided with a clamping part for limiting the movement of the connecting body in the axial direction and a limiting part for limiting the rotation of the connecting body in the circumferential direction. The connecting body is arranged on the working component and the mounting main body is arranged on the cylinder body of the hand tool by using the detachable connection mode between the connecting body and the mounting main body. Therefore, the working component of the hand tool can be detached from the cylinder body for replacement to adapt to different application scenarios.

Description

Technical Field

[0001] This invention belongs to the field of handheld tool technology, and specifically relates to a handheld tool. Background Technology

[0002] Hand tools are tools that are held in the hand and driven by an internal transmission mechanism to perform operations. They are widely used in construction work such as plumbing, power, building, and decoration. Based on the method of force application, they can be divided into power tools and manual tools. Hand tools typically consist of a body and a working part. The working part is classified in various ways according to actual work needs, such as crimping heads, shearing heads, pipe expanders, and drilling heads. Most existing hand tools have their working parts fixed to the cylinder of the body, serving only a single function. However, in many practical situations, tools with different functions are often needed, requiring the carrying of multiple hand tools. Since hand tools are generally heavy, carrying them is very inconvenient. Summary of the Invention

[0003] To address the aforementioned problems, the present invention provides a handheld tool capable of disassembling and replacing working parts.

[0004] The present invention adopts the following technical solution:

[0005] A handheld tool is characterized by comprising: a body having a movably disposed transmission rod; a working part having a push rod detachably connected to the transmission rod; and a mounting mechanism for detachably mounting the working part onto the body; wherein the mounting mechanism comprises: a mounting assembly having a mounting body for connecting to the body; a connecting body disposed on the working part for detachably connecting to the mounting body, wherein the push rod is movably disposed therein; the mounting body is provided with: a locking portion for restricting axial movement of the connecting body, and a limiting member for restricting circumferential rotation of the connecting body; the connecting body is provided with a locking engagement portion and a limiting engagement portion respectively cooperating with the locking portion and the limiting member; the transmission rod has a push rod mounting portion for the push rod to extend into, and a push rod connecting assembly is provided at one end of the push rod facing the transmission rod. When the snap-fitting part engages with the snap-fitting part, the axial movement of the connecting body and the mounting body is restricted; when the snap-fitting part disengages from the snap-fitting part, the connecting body and the mounting body can move relative to each other in the axial direction; when the limiting member engages with the limiting engagement part, the circumferential rotation of the connecting body and the mounting body is restricted.

[0006] The handheld tool proposed in this invention also has the following features: the transmission rod has a push rod mounting part for the push rod to extend into; one end of the push rod extending into the push rod mounting part is the insertion end; the push rod connecting assembly has: a pin, one end of which is installed inside the insertion end, and the other end extending out of the outer peripheral surface of the insertion end to form a pin protrusion; a pin spring, which is sleeved on the outer periphery of the pin, with one end abutting against the inside of the insertion end and the other end abutting against the pin; and an annular groove is formed on the inner wall of the push rod mounting part for the pin protrusion to extend into.

[0007] The handheld tool proposed in this invention may also have the following features: the end of the push rod mounting part facing the push rod is an open end; the inner wall of the push rod mounting part is provided with a notch and a protrusion; the notch extends from the open end to the annular groove; the protrusion is located between the open end and the annular groove; and the open end is also provided with an inclined guide surface extending to the protrusion.

[0008] The handheld tool proposed in this invention may also have the following features: multiple notches and protrusions are provided, and the notches and protrusions are arranged at intervals on the inner side of the push rod mounting portion; the notches and the snap-fit ​​portion are staggered in the axial direction.

[0009] The handheld tool proposed in this invention may also have the following features, wherein the limiting mating part has: a first limiting surface formed on the connecting body, and a second limiting surface formed on the connecting body; when the limiting member abuts against the first limiting surface, the pin protrusion is located in the annular groove and corresponds to the protruding block; when the limiting member abuts against the second limiting surface, the pin protrusion is located in the annular groove and corresponds to the notch groove.

[0010] The handheld tool proposed in this invention may also have the following features, wherein the mounting body comprises: a connecting body connecting section having a slot for inserting the connecting body; a body connecting section for connecting to the body; and a partition located between the connecting body connecting section and the body connecting section, having a through hole for the transmission rod to pass through one end toward the push rod; the inner wall of the slot is provided with the snap-fit ​​portion, the inner wall of the through hole is provided with a limiting hole, the side of the transmission rod is provided with a limiting groove corresponding to the limiting hole, and a limiting steel ball is provided between the limiting hole and the limiting groove.

[0011] The handheld tool proposed in this invention may also have the following feature: the mounting mechanism further includes a sliding sleeve assembly, which comprises: a sliding sleeve movably disposed on the outer periphery of the mounting body; a reset member disposed between the inner wall of the sliding sleeve and the outer periphery of the mounting body for assisting the sliding sleeve in resetting; a locking protrusion formed on the inner wall of the sliding sleeve; a sliding sleeve limiting member disposed on the mounting body; and a sliding sleeve limiting groove formed on the sliding sleeve and cooperating with the sliding sleeve limiting member; the outer periphery of the mounting body is also provided with a locking ring that cooperates with the locking protrusion.

[0012] The handheld tool proposed in this invention may also have the following features, wherein the mounting component further comprises: a locking member, movably mounted on the mounting body; a locking engagement portion that cooperates with the locking member on the connecting body; and a sliding limit portion for restricting the movement of the locking member on the sliding sleeve; the locking engagement portion is a locking groove formed on the outer peripheral surface of the connecting body; and the sliding limit portion is a limit protrusion integrally formed on the inner wall of the sliding sleeve.

[0013] The handheld tool proposed in this invention may also have the following feature: the mounting assembly further includes an anti-misoperation mounting component movably disposed on the mounting body, the locking component being a locking steel ball, the anti-misoperation mounting component being an anti-misoperation steel ball, and the diameter of the locking steel ball being larger than the diameter of the anti-misoperation steel ball.

[0014] The handheld tool proposed in this invention may also have the following features: both the snap-fit ​​part and the connecting body are provided with at least one set; each set of snap-fit ​​parts has a plurality of circumferentially arranged slots; each set of snap-fit ​​mating parts has a plurality of circumferentially arranged clips that can be embedded in the slots; the mounting body is also provided with a first interval area, the first interval area and the snap-fit ​​part are arranged at intervals along the inner circumferential surface of the mounting body, and the span of the first interval area in the circumferential direction is greater than or equal to the span of the snap-fit ​​part in the circumferential direction.

[0015] Invention Function and Effect

[0016] According to the hand tool of the present invention, firstly, since a detachable connection is adopted between the connecting body and the mounting body, the connecting body is disposed on the working part and the mounting body is disposed on the body of the hand tool, so that the working part of the hand tool can be detached from the body for replacement to adapt to different application scenarios.

[0017] Secondly, since the mounting body is provided with locking parts and snap-fit ​​parts, and the connecting body is provided with locking engagement parts and snap-fit ​​parts that cooperate with the locking parts and snap-fit ​​parts respectively, the locking parts and locking engagement parts can restrict the circumferential rotation between the connecting body and the mounting body; the snap-fit ​​parts and snap-fit ​​parts can restrict the axial movement between the connecting body and the mounting body, so that the connecting body and the mounting body can be firmly installed together.

[0018] Meanwhile, the snap-fit ​​part and the snap-fit ​​mating part can also enhance the load-bearing capacity against axial forces, preventing damage to the working parts due to excessive axial forces during operation. In addition, since a push rod connecting assembly is provided at one end of the push rod mounting part that extends into the transmission rod, the push rod and the transmission rod are detachably connected, thus forming an internal and external engagement limit for the installation of the working parts, making the installation more secure and stable. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the handheld tool of the present invention.

[0020] Figure 2 This is a cross-sectional view of the mounting location of the working component of the present invention.

[0021] Figure 3 This is a cross-sectional view of the connection structure between the transmission rod and the push rod of the present invention.

[0022] Figure 4 yes Figure 3 A magnified view of part A.

[0023] Figure 5 This is a schematic diagram of the transmission rod of the present invention.

[0024] Figure 6 This is a top view of the open end of the transmission rod of the present invention.

[0025] Figure 7 yes Figure 6 BB-direction cross-section view.

[0026] Figure 8 This is a cross-sectional view of the mounting mechanism of the present invention.

[0027] Figure 9 This is a structural diagram of the sliding sleeve of the present invention.

[0028] Figure 10 This is a cross-sectional view of the sliding sleeve of the present invention.

[0029] Figure 11 This is a structural diagram of the installation component of the present invention.

[0030] Figure 12 This is a cross-sectional view of the mounting component of the present invention in the axial direction.

[0031] Figure 13 This is a front view of the slot orientation of the mounting component of the present invention.

[0032] Figure 14 This is a radial cross-sectional view of the mounting component of the present invention.

[0033] Figure 15 This is a structural diagram of the connecting body of the present invention.

[0034] Figure 16 This is a cross-sectional view of the mounting mechanism of the present invention when the working parts are mounted on the machine body.

[0035] Figure 17 This is a cross-sectional view of the connection structure between the transmission rod and the mounting body of the present invention.

[0036] Figure 18 This is a structural diagram of another embodiment of the working component of the present invention.

[0037] Reference numerals: Handheld tool 100, Working part 10, Connecting body 11, Locking mating part 12, Limiting mating part 13, Limiting surface 131, Snap-fitting mating part 14, Second interval area 15, Push rod 16, Extending end 161, Mounting hole 162, Mounting plate 163, Buffer pad 164, Push rod spring 17, Upper mold 181, Lower mold 182, Machine body 20, Transmission rod 21, Limiting groove 211, Limiting steel ball 212, Push rod mounting part 213, Annular groove 214, Open end 215, Inclined guide surface 216, Notch groove 217, Protrusion 218, Piston spring 22, Mounting mechanism 30, Mounting assembly Component 40, mounting body 41, connecting body connecting section 41a, body connecting section 41b, partition 41c, slot 411, spring mounting surface 412, first mounting hole 413, second mounting hole 414, third mounting hole 415, snap-fit ​​part 416, first interval area 417, limiting part 42, locking part 43, anti-misinstallation part 44, locking ring 45, sliding sleeve assembly 50, sliding sleeve 51, reset part 52, locking protrusion ring 53, sliding sleeve limiting part 54, sliding sleeve limiting groove 55, sliding limiting part 56, shaped inclined guide surface 561, annular plane 562, push rod connecting assembly 60, pin 61, pin spring 62. Detailed Implementation

[0038] To make the technical means, creative features, objectives and effects of the present invention easy to understand, the following describes in detail the mounting mechanism for the handheld tool and the handheld tool of the present invention with reference to the embodiments and accompanying drawings.

[0039] <Example>

[0040] Figure 1 This is a structural diagram of the handheld tool of the present invention.

[0041] This embodiment provides a handheld tool 100 whose working parts are replaceable. For example... Figure 1 As shown, the handheld tool 100 includes a working part 10, a body 20, and a mounting mechanism 30 for detachably mounting the working part 10 onto the body 20.

[0042] Figure 2 This is a cross-sectional view of the mounting location of the working component of the present invention.

[0043] like Figure 2 As shown, the machine body 20 has a movable transmission rod 21. The transmission rod 21 moves telescopically under the drive of a transmission mechanism (which can be a hydraulic transmission mechanism, an electric transmission mechanism, etc., as existing technology). A plunger spring 22 is provided between the outer periphery of the transmission rod 21 and the inner wall of the machine body 20 to assist the transmission rod 21. The working part 10 is equipped with a connecting body 11, a push rod 16 detachably connected to the transmission rod 21, a push rod spring 17 sleeved on the outside of the push rod 16, and a mold for clamping the workpiece. Figure 2 Taking the crimp connector shown as an example, the mold is divided into an upper mold 181 and a lower mold 182. The lower mold 182 is located at the outer end of the push rod 16, and the inner end of the push rod 16 is installed on the transmission rod 21. When the transmission rod 21 extends under the drive of the transmission mechanism, the push rod 16 can be pushed out, so that the lower mold 182 moves closer to the upper mold 181, thereby squeezing the workpiece clamped in the mold.

[0044] Figure 3 This is a cross-sectional view of the connection structure between the transmission rod and the push rod of the present invention.

[0045] Figure 4 yes Figure 3 A magnified view of part A.

[0046] like Figure 2 As shown, the mounting mechanism 30 includes a mounting assembly 40 and a sliding sleeve assembly 50. The mounting assembly 40 has a mounting body 41 for connection to the body 20. The connecting body 11 is detachably connected to the mounting body 41, and the push rod 16 is movably disposed within the connecting body 11. Figure 3As shown, the mounting body 41 has a connecting body section 41a, a body section 41b, and a partition plate 41c located between the connecting body section 41a and the body section 41b. The connecting body section 41a has a slot 411 for the connecting body 11 to be inserted into. The body section 41b is threaded onto the body 20. The partition plate 41c has a through hole in its center for the transmission rod 21 to pass through towards the push rod 16. A limiting hole is formed in the inner wall of this through hole. A long, narrow limiting groove 211 is provided on the side of the transmission rod 21 corresponding to the limiting hole. A limiting steel ball 212 is provided between the limiting hole and the limiting groove 211. The limiting steel ball 212 can only roll relative to the limiting groove 211, which serves to guide the extension and retraction of the transmission rod 21 and prevent relative rotation between the transmission rod and the mounting body 41.

[0047] The transmission rod 21 has a push rod mounting part 213 for the push rod 16 to extend into. The end of the push rod 16 that extends into the push rod mounting part 213 is regarded as the extension end 161. The extension end 161 is formed by the inward retraction of one end of the push rod 16. The outer diameter of the extension end 161 is smaller than the outer diameter of the main body of the push rod 16. A push rod connecting assembly 60 is provided on the extension end 161. The push rod connecting assembly 60 has a pin 61 and a pin spring 62. A mounting hole 162 is radially formed inside the extension end 161, and a mounting plate 163 is formed inside the mounting hole 162. One end of the pin 61 passes through the mounting plate 163 and a buffer pad 164 is provided between it and the mounting plate 163. The other end of the pin 61 extends out of the outer peripheral surface of the insertion end 161 to form a pin protrusion 611. The pin spring 62 is sleeved on the outer periphery of the pin 61, and one end of the pin spring 62 abuts against the mounting plate 163 inside the insertion end 161, and the other end abuts against the pin 61. The inner wall of the push rod mounting part 213 is provided with an annular groove 214 for the pin protrusion 611 to extend into.

[0048] Figure 5 This is a schematic diagram of the transmission rod of the present invention.

[0049] Figure 6 This is a top view of the open end of the transmission rod of the present invention.

[0050] Figure 7 yes Figure 6 BB-direction cross-section view.

[0051] The end of the push rod mounting portion 213 facing the push rod 16 is considered as the open end 215. The inner wall of the push rod mounting portion 213 is provided with a notch 217 and a protrusion 218. The notch 217 extends from the open end 215 to the annular groove 214, and the protrusion 218 is located between the open end 215 and the annular groove 214. The open end 215 is also provided with an inclined guide surface 216 extending to the protrusion 218. In this embodiment, there are multiple notches 217 and protrusions 218 (three in the figure), and the notches 217 and protrusions 218 are arranged at intervals on the inner wall of the push rod mounting portion 213, that is, a notch 217 is provided between two adjacent protrusions 218. When the push rod 16 is inserted into the transmission rod 21, if the pin protrusion 611 faces the notch 217, the insertion end 161 is directly inserted along the opening end 215 of the push rod mounting part 213; if the pin protrusion 611 faces the protrusion 218, under the guidance of the inclined guide surface 216, the spring pin protrusion 611 will retract along the inclined guide surface 216 into the mounting hole 162, and then move against the inner wall of the protrusion 218 for insertion. After the pin protrusion 611 leaves the protrusion 218, under the action of the pin spring 62, the pin protrusion 611 extends into the annular groove 214. That is to say, at any angle, the push rod 16 can be smoothly inserted into the push rod mounting part 213.

[0052] The aforementioned push rod connecting assembly not only facilitates the connection between push rod 16 and transmission rod 21, but also assists in the resetting of push rod 16 and lower mold 182 during operation. Specifically, as shown... Figure 3 and Figure 4 As shown, the open end 215 of the push rod mounting part 213 extends out of the through hole in the middle of the partition plate 41c, and has an overlap on the upper edge of the through hole (to... Figure 3 and Figure 4 The outward flange (shown in the direction shown). Driven by the transmission mechanism, the transmission rod 21 extends and then moves the push rod 16. During reset, the transmission rod 21 is reset by the elastic force of the plunger spring 22. Under the combined action of the push rod connecting assembly and the push rod spring 17, the push rod 16 can be pulled back for reset. Furthermore, the push rod connecting assembly in this embodiment adopts an elastic connection method, which provides better reset effect and a longer service life compared to rigid connection methods such as direct bolt fixing.

[0053] Figure 8 This is a cross-sectional view of the mounting mechanism of the present invention.

[0054] Figure 9 This is a structural diagram of the sliding sleeve of the present invention.

[0055] Figure 10 This is a cross-sectional view of the sliding sleeve of the present invention.

[0056] The mounting assembly 40 also includes a limiting member 42 fixedly mounted on the mounting body 41, a locking member 43 movably mounted on the mounting body 41, and an anti-mismounting member 44. The sliding sleeve assembly 50 includes a sliding sleeve 51 movably mounted on the mounting body 41, a reset member 52 pressed between the inner side of the sliding sleeve 51 and the outer side of the mounting body 41 to assist in resetting the sliding sleeve 51, and a locking protrusion 53 formed on the inner wall of the sliding sleeve 51. The connecting body 11 is mounted on the working part 10 and includes a locking engagement part 12 that cooperates with the locking member 43 and a limiting engagement part 13 that cooperates with the limiting member 42.

[0057] like Figures 8-10 As shown, the sliding sleeve 51 is slidably fitted onto the outer periphery of the mounting body 41, and a retaining ring 45 is installed on the outer side of the mounting body 41 corresponding to the retaining protrusion 53. The retaining ring 45 and the retaining protrusion 53 cooperate to limit the sliding of the sliding sleeve 51 at the front end (the direction indicated by "front end" here is the area where the working part is located as the front, and the area where the machine body is located as the rear). A sliding sleeve limiting member 54 is also embedded on the outer periphery of the mounting body 41, and a sliding sleeve limiting groove 55 is formed on the inner sidewall of the sliding sleeve 51 along the axial direction. The sliding sleeve limiting groove 55 and the sliding sleeve limiting member 54 cooperate to limit the sliding of the sliding sleeve 51 at the rear end. The front end limiting and rear end limiting structure can ensure that the sliding sleeve 51 can always remain on the outer periphery of the mounting body 41, preventing it from detaching from the mounting body 41 during sliding. As shown in the figure, in this embodiment, the sliding sleeve limiting member 54 is a steel ball, and the front end of the sliding sleeve limiting groove 55 is provided with a limiting surface 551 for locking onto the surface of the steel ball. Two sets of sliding sleeve limiting members 54 and sliding sleeve limiting grooves 55 are provided, symmetrically distributed on both sides of the mounting body 41. The sliding sleeve 51 is provided with a sliding limiting part 56 that cooperates with the locking member 43. The sliding limiting part 56 is a limiting protrusion ring integrally formed on the inner wall of the sliding sleeve 51. An annular inclined guide surface 561 and an annular plane 562 are respectively formed on both sides of the sliding limiting part 56. A spring mounting surface 412 is formed on the outer side of the mounting body 41. The reset member 52 is a reset spring, which is pressed between the annular plane 562 and the spring mounting surface 412 to assist in the reset of the sliding sleeve 51.

[0058] Figure 11 This is a structural diagram of the installation component of the present invention.

[0059] Figure 12 This is a cross-sectional view of the mounting component of the present invention in the axial direction.

[0060] like Figure 11 and Figure 12As shown, the mounting body 41 has a first mounting hole 413, a second mounting hole 414, and a third mounting hole 415 for mounting the locking member 43, the limiting member 42, and the anti-misinstallation member 44, respectively. The centers of the first mounting hole 413, the second mounting hole 414, and the third mounting hole 415 are almost on the same circumference, and the sliding limiting part 56 can cover the outer periphery of the first mounting hole 413, the second mounting hole 414, and the third mounting hole 415, thereby limiting the locking member 43 inside.

[0061] The number of locking elements 43 and limiting elements 42 is the same, and each locking element 43 corresponds to each limiting element 42 to form a set of axial limiting components to jointly limit the circumferential rotation of the connecting body on the mounting body. Anti-misoperation mounting elements 44 are positioned close to the locking elements 43. Each locking element 43 has an anti-misoperation mounting element 44, slightly smaller in size than the locking element 43, positioned in front of its rotation trajectory to prevent user misoperation during installation and to serve as a warning. In this embodiment, both the locking elements 43 and the anti-misoperation mounting elements 44 are steel balls, and the limiting elements 42 are limiting pins. Three of each are provided, with each locking element 43, anti-misoperation mounting element 44, and limiting element 42 forming a group. These three groups are evenly arranged circumferentially on the mounting body 41. The locking elements 43 are locking steel balls, and the anti-misoperation mounting elements 44 are anti-misoperation steel balls, with the diameter of the locking steel ball being larger than that of the anti-misoperation steel ball. In this embodiment, the diameter of the locking steel ball is 6 mm, and the diameter of the anti-misoperation steel ball is 5.5 mm. The locking steel ball and the anti-misoperation steel ball are respectively rotatably disposed in the first mounting hole 413 and the third mounting hole 415, while the limiting pin is interference-fitted with the second mounting hole 414, so that the limiting pin is fixed on the mounting body 41.

[0062] Figure 13 This is a front view of the slot orientation of the mounting component of the present invention.

[0063] Figure 14 This is a radial cross-sectional view of the mounting component of the present invention.

[0064] Additionally, at least one set of latching portions 416 is provided on the inner wall of the slot 411 of the mounting body 41. In this embodiment, three sets of latching portions 416 are evenly arranged circumferentially on the inner wall of the slot 411, and a first interval area 417 (i.e., Figures 6-13 The smooth inner wall of the slot 411, and each set of latching parts 416 consists of several circumferentially arranged and parallel latching slots.

[0065] Figure 15 This is a structural diagram of the connecting body of the present invention.

[0066] Correspondingly, such as Figure 15As shown, at least one set of snap-fit ​​parts 14 are provided on the outer surface of the connecting body 11. In this embodiment, three sets of snap-fit ​​parts 14 are evenly arranged circumferentially on the outer surface of the connecting body 11, and a second interval area 15 is provided between two adjacent sets of snap-fit ​​parts 14 (i.e., Figure 15 The smooth outer wall of the connecting body 11 is used, and each set of snap-fit ​​parts 14 consists of several circumferentially arranged and parallel snap-fit ​​strips, which can be embedded in the snap-fit ​​groove. Figure 2 As shown, when the clip is inserted into the slot, the axial movement of the connecting body 11 and the mounting body 41 is restricted; that is, the connecting body 11 will not detach from the mounting body 41 axially. When the clip is aligned with the first interval area and the slot is aligned with the second interval area, the connecting body 11 can move axially relative to the mounting body 41. During installation, the snap-fit ​​part 14 of the connecting body 11 is first inserted along the first interval area 417 on the slot 411, and then the connecting body 11 is rotated so that the snap-fit ​​part 14 is embedded between the snap-fit ​​parts 416. The snap-fit ​​parts and snap-fit ​​parts arranged circumferentially can also increase the load-bearing capacity or offset the axial force on the working parts during operation, so as to protect the working parts or the connecting body from damage and extend the service life of the structure.

[0067] The width of the first interval 417 (i.e., the span in the circumferential direction) is set to be greater than or equal to the width of the card slot, and the width of the second interval 15 is set to be greater than or equal to the width of the card strip, so as to ensure that when the card strip is facing the first interval 417, the card strip can be completely separated from the card slot, so that the connecting body can be pulled out.

[0068] Figure 16 This is a cross-sectional view of the mounting mechanism of the present invention when the working parts are mounted on the machine body.

[0069] like Figure 15 As shown, the locking engagement part 12 is a locking groove formed on the outer peripheral surface of the end of the connecting body. The locking groove has a concave structure that is lower in the middle and higher on both sides. Along the outer edge of the end of the connecting body, a limiting protrusion is provided at a certain distance from the locking groove. The limiting engagement part 13 is a first limiting surface 131 formed on the side of the limiting protrusion facing the locking groove and a second limiting surface 121 formed on the side of the locking groove facing the limiting protrusion. When the connecting body 11 rotates on the mounting body 41, once the limiting member 42 abuts against the first limiting surface 131 or the second limiting surface 121, it can no longer continue to rotate in the same direction. In this embodiment, as Figure 15 As shown, each set of snap-fit ​​parts 14 has a locking groove and a limiting protrusion at its end.

[0070] Figure 17This is a cross-sectional view of the connection structure between the transmission rod and the mounting body of the present invention.

[0071] In addition, such as Figure 18 As shown, the position of the notch 217 at the push rod mounting part 213 inside the transmission rod 21 corresponds to the first interval area 417 on the inner wall of the mounting body 41, and the position of the protrusion 218 at the push rod mounting part 213 corresponds to the snap-fit ​​part 416 on the inner wall of the mounting body 41 (that is, in the axial direction, the notch 217 and the snap-fit ​​part 416 are staggered in the axial direction). Therefore, when the limiting member 42 abuts against the first limiting surface 131, the pin protrusion 611 is located in the annular groove 214 and corresponds to the protrusion 218. At this time, due to the obstruction of the protrusion 218, the connecting body 11 will not be able to move in the axial direction, and the connecting body 11 and the mounting body 41 are installed in place. When the limiting member 42 abuts against the second limiting surface 121, the pin protrusion 611 is located in the annular groove 214 and corresponds to the notch groove 217. At this time, due to the setting of the notch groove 217, the pin protrusion 611 can move axially without obstruction, allowing the connecting body 11 to be disassembled. Therefore, the positional design of the first limiting surface 131 and the second limiting surface 121 is related to the positional design of the protrusion 218 and the notch groove 217, which can provide users with a prompt to judge whether the installation is in place and whether it can be disassembled. Furthermore, the combination of the two can provide double protection for the disassembly and assembly of the connecting body 11, making disassembly and assembly more convenient and the installation more secure and stable.

[0072] During installation, when the connecting body 11 is rotated within the slot 411 until the limiting member 42 abuts against the first limiting surface 131, the connecting body 11 will be unable to continue rotating in the same direction (e.g., Figure 16 (as shown in the image). At the same time, the locking member 43 also engages with the locking engagement part. When the sliding limit part 56 on the sliding sleeve 51 is outside the locking member 43, the locking member 43 is locked between the locking engagement part and the sliding limit part 56. Combined with the limit on the limit member 42, the rotation of the connecting body 11 in the circumferential direction is restricted.

[0073] Figure 18 This is a structural diagram of another embodiment of the working component of the present invention.

[0074] In this embodiment, the working component 10 can be as follows: Figure 1 The structure shown can also be as follows: Figure 18 The structure shown only requires the connecting body 11 to be installed onto the machine body for use via the installation components.

[0075] The working component is installed as follows in this embodiment:

[0076] First, apply force to the sliding sleeve 51 and slide it along the direction of the body 20 so that the sliding limit part 56 leaves the position corresponding to the locking member 43. Then, insert the snap-fit ​​part 14 of the connecting body 11 along the first interval area 417 on the slot 411. Then, rotate the connecting body 11. During the rotation, since the sliding limit part 56 leaves the locking member 43 and the anti-misoperation installation member 44, the anti-misoperation installation member 44 and the locking member 43 can roll along the outer periphery of the end of the connecting body 11 until the limit member 42 abuts against the limit protrusion. Under the obstruction of the limit surface on the side of the limit protrusion, the connecting body 11 will no longer be able to rotate. At this time, the locking member 43 is also locked in the locking fit part 12, and the snap-fit ​​part 416 and the snap-fit ​​part 14 are also engaged with each other. Next, the force applied to the sliding sleeve 51 is removed. Driven by the reset member 52, the sliding sleeve 51 resets along the direction of the working part 10. At the same time, the sliding limit part 56 moves to the position corresponding to the locking member 43 and the anti-misinstallation member 44, and abuts against the outside of the locking member 43, so that the locking member 43 is locked between the connecting body 11 and the sliding limit part 56, thus completing the installation of the connecting body 11. In short, this embodiment only requires sliding the sliding sleeve 51 first, then inserting the connecting body, then rotating the connecting body, and finally releasing the sliding sleeve 51 to allow it to automatically reset, which can complete the quick installation. It is very convenient and fast.

[0077] The working component disassembly method in this embodiment is as follows:

[0078] First, apply force to the sliding sleeve 51, sliding it along the direction of the machine body 20 until the sliding limit part 56 moves away from the position corresponding to the locking part 43. At this point, the connecting body 11 can be rotated. When the locking part 416 separates from the locking engagement part 14, the connecting body 11 can be pulled out axially to complete the disassembly. In short, this embodiment only requires sliding the sliding sleeve 51 first, then rotating the connecting body, and then pulling out the connecting body to complete the quick disassembly.

[0079] The above embodiments are merely illustrative of specific implementations of the present invention, and the present invention is not limited to the scope of the description of the above embodiments. For example:

[0080] Firstly, in the above embodiment, the mounting body 41 has three sets of snap-fit ​​parts 416, the first interval area 417, the snap-fit ​​mating parts 14 on the connecting body 11, the second interval area 15, and the notch 217 and protrusion 218 in the transmission rod 21. Correspondingly, three sets of limiting members 42, locking members 43, and anti-misinstallation members 44 are also arranged. In actual situations, only one, two, or more sets may be provided, as long as it is ensured that the snap-fit ​​parts 416 can slide smoothly with the second interval area 15 or the snap-fit ​​mating parts 14 can slide smoothly with the first interval area 417. This ensures rapid axial movement of the connecting body 11, thereby achieving rapid assembly and disassembly.

[0081] Secondly, in the above embodiment, the connection between the transmission rod 21 and the push rod 16 is achieved by providing a push rod mounting portion at the end of the transmission rod 21, allowing the extension end of the push rod 16 to extend into and be installed. In actual practice, a transmission rod mounting portion can also be provided at the end of the push rod 16, with the transmission rod extending into the transmission rod mounting portion for installation. In this case, the installation position of the corresponding push rod connecting assembly is also adapted accordingly.

Claims

1. A handheld tool, characterized in that, include: The body has a movable transmission rod; The working component has a push rod that is detachably connected to the transmission rod; as well as A mounting mechanism is used to detachably mount the working component onto the machine body; The installation mechanism includes: The mounting assembly has a mounting body for connection to the body; A connecting body is disposed on the working component and is used for detachable connection with the mounting body, and the push rod is movably disposed therein; The mounting body is provided with: The snap-fit ​​portion is used to restrict the axial movement of the connecting body. A limiting component is used to restrict the circumferential rotation of the connecting body. The connecting body is provided with a snap-fit ​​part and a limiting part that respectively cooperate with the snap-fit ​​part and the limiting member. The push rod is provided with a push rod connecting assembly at one end facing the transmission rod; The transmission rod has a push rod mounting portion for the push rod to extend into, and one end of the push rod extending into the push rod mounting portion is the insertion end. The push rod connecting assembly has: A latch has one end installed inside the insertion end, and the other end extending out of the outer peripheral surface of the insertion end to form a latch protrusion. A spring is sleeved on the outer periphery of the pin, with one end abutting against the inside of the inserted end and the other end abutting against the pin. The inner wall of the push rod mounting part is provided with an annular groove for the pin protrusion to extend into; The end of the push rod mounting part facing the push rod is an open end. The inner wall of the push rod mounting part is provided with a notch and a protrusion. The notch extends from the open end to the annular groove. The protrusion is located between the open end and the annular groove. The open end is also provided with an inclined guide surface extending to the protrusion. The limiting and fitting part has: The first limiting surface is formed on the connecting body. The second limiting surface is formed on the connecting body. When the limiting member abuts against the first limiting surface, the pin protrusion is located in the annular groove and corresponds to the protruding block; when the limiting member abuts against the second limiting surface, the pin protrusion is located in the annular groove and corresponds to the notch groove.

2. The handheld tool according to claim 1, characterized in that, in, There are multiple notches and protrusions, and the notches and protrusions are arranged at intervals on the inner side of the push rod mounting part. The notches and the snap-fit ​​part are staggered in the axial direction.

3. The handheld tool according to claim 1, characterized in that, in, The installation body has: The connecting section of the main body has a slot for inserting the main body; Body connecting section, for connecting to the body; and A partition, located between the connecting body section and the machine body section, has a through hole for the transmission rod to pass through one end toward the push rod; The slot has a snap-fit ​​part on its inner wall, a limiting hole is formed in the inner wall of the through hole, a limiting groove is formed on the side of the transmission rod corresponding to the limiting hole, and a limiting steel ball is formed between the limiting hole and the limiting groove.

4. The handheld tool according to any one of claims 1-3, Its features are, The mounting mechanism further includes a sliding sleeve assembly, which has the following characteristics: The sliding sleeve is movably disposed on the outer periphery of the mounting body; A reset element is disposed between the inner wall of the sliding sleeve and the outer periphery of the mounting body to assist the sliding sleeve in resetting. A positioning protrusion is formed on the inner wall of the sliding sleeve; A sliding sleeve limiting member is disposed on the mounting body; and A sliding sleeve limiting groove is formed on the sliding sleeve and cooperates with the sliding sleeve limiting component; The outer periphery of the mounting body is also provided with a locking ring that cooperates with the locking protrusion ring.

5. The handheld tool according to claim 3, characterized in that, in, The mounting component also has: A locking element is movably mounted on the mounting body. The connecting body is provided with a locking engagement part that cooperates with the locking member, and the sliding sleeve is provided with a sliding limiting part for restricting the movement of the locking member; the locking engagement part is a locking groove formed on the outer peripheral surface of the connecting body, and the sliding limiting part is a limiting protrusion ring integrally formed on the inner wall of the sliding sleeve.

6. The handheld tool according to claim 4, characterized in that, in, The mounting assembly also has an anti-misoperation mounting component movably mounted on the mounting body. The locking component is a locking steel ball, and the anti-misoperation mounting component is an anti-misoperation steel ball, wherein the diameter of the locking steel ball is larger than the diameter of the anti-misoperation steel ball.

7. The handheld tool according to any one of claims 1-3, characterized in that, in, Both the snap-fit ​​part and the connecting body are provided with at least one set. Each set of snap-fit ​​parts has several circumferentially arranged slots; Each set of snap-fit ​​parts has several circumferentially arranged snap strips that can be embedded in the snap slot; The mounting body is further provided with a first interval area, which is arranged at intervals with the snap-fit ​​part along the inner circumferential surface of the mounting body. The span of the first interval area in the circumferential direction is greater than or equal to the span of the snap-fit ​​part in the circumferential direction.

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