Sleeve mounting structure and electric tool applying same

Abstract

The utility model discloses a sleeve installation structure and an electric tool applying the same. The sleeve installation structure comprises an output shaft, a sleeve, an insertion piece and an elastic piece. A first inserting hole is formed in the radial direction of the output shaft, a connecting hole for containing the output shaft is formed in the axial direction of the sleeve, a second inserting hole communicated with the connecting hole and used for being aligned with the first inserting hole is formed in the radial direction of the sleeve, and a first stopping structure is arranged in the first end of the second inserting hole. The two ends of the insertion piece are a locking end and an abutting end respectively, and the insertion piece is detachably connected with the second insertion hole. The elastic piece sleeves the insertion piece, and one end of the elastic piece abuts against the abutting end. According to the sleeve mounting structure and the electric tool applying the sleeve mounting structure, the sleeve mounting and dismounting steps can be simplified, and the sleeve mounting and dismounting efficiency can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric tools, and in particular relates to a sleeve installation structure and an electric tool using the same. Background Art

[0002] A socket is a special tool for tightening or loosening nuts and adapting to work accessories such as screw bits. It can be used in various fields such as mechanical processing, automobile maintenance, and construction. When used, the socket needs to be combined with a driving tool with an output component to screw fasteners such as bolts, screws, and nuts into designated locations.

[0003] At present, when installing the sleeve on the output assembly, it is necessary to align the socket on the output assembly with the socket on the sleeve, then insert the pin into the two aligned sockets, and then use a rubber ring or a spring ring to clamp the outer ring of the sleeve to prevent the pin from falling out. The above installation process has too many steps, and the installation and removal are laborious. At the same time, if the user is not careful, the pin is often lost, affecting the normal operation of the power tool. Utility Model Content

[0004] The purpose of the utility model is to provide a sleeve installation structure and an electric tool using the same, which can simplify the sleeve installation and removal steps and improve the sleeve installation and removal efficiency.

[0005] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides a sleeve mounting structure, including an output shaft, a sleeve, an insert and an elastic member. A first socket is provided in the radial direction of the output shaft, a connecting hole for accommodating the output shaft is provided in the axial direction of the sleeve, a second socket is provided in the radial direction that is connected to the connecting hole and used to align with the first socket, and a first stop structure is provided inside the first end of the second socket. The two ends of the insert are respectively a locking end and an abutting end, and the insert is detachably connected to the second socket. The elastic member is sleeved on the insert and one end abuts against the abutting end. The sleeve mounting structure has a locked state and an unlocked state. In the locked state, the locking end is engaged with the first stop structure. In the unlocked state, the locking end is disengaged from the first stop structure, and the elastic member can drive the insert to move toward the second end of the second socket.

[0006] In one or more embodiments of the present invention, the first stop structure includes a first stop plate and a third socket passing through the first stop plate, the third socket is for the locking end to pass through the first stop plate, the locking end includes a radially protruding locking protrusion, and in the locked state, the locking protrusion abuts against one end of the first stop plate away from the axis of the sleeve.

[0007] In one or more embodiments of the present utility model, the first stop structure further includes a limiting groove for accommodating the locking protrusion, and the limiting groove is arranged on the end surface of the first stop plate away from the axis of the sleeve.

[0008] In one or more embodiments of the present invention, the abutting end includes a plate or a block for abutting against the elastic member.

[0009] In one or more embodiments of the present invention, a second stop structure is provided inside the second end of the second plug hole, and the elastic member is located between the second stop structure and the abutting end and abuts against the second stop structure.

[0010] In one or more embodiments of the present invention, the second stop structure includes a second stop plate and a fourth insertion hole penetrating the second stop plate, and the fourth insertion hole is used for the locking end to pass through the second stop plate.

[0011] In one or more embodiments of the present invention, in the axial viewing angle of the second plug hole, there is an angle between the projection of the third plug hole and the projection of the fourth plug hole.

[0012] In one or more embodiments of the present invention, a buffer cavity is formed between the second stop plate and the connecting hole, and in the axial direction of the second plug hole, the length of the locking end is not greater than the length of the buffer cavity.

[0013] In one or more embodiments of the present invention, the length of the elastic member in the locked state is D1, the length of the limiting groove is D2, the length of the elastic member when fully compressed is D3, and D1, D2 and D3 satisfy D1-D3>D2.

[0014] In one or more embodiments of the present invention, the elastic member is a spring, and in the radial direction of the elastic member, the inner diameter of the elastic member is not less than the maximum length of the locking end.

[0015] Another specific embodiment of the utility model further provides an electric tool, comprising the above-mentioned sleeve installation structure.

[0016] Compared with the prior art, the sleeve installation structure of the utility model and the electric tool using the same can simplify the sleeve installation and removal steps and improve the sleeve installation and removal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the drawings required for the implementation or the prior art description are briefly introduced below. Obviously, the drawings described below are only some implementations recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a three-dimensional structural diagram of an electric tool in one embodiment of the utility model;

[0019] Figure 2This is a three-dimensional structural diagram of a sleeve installation structure in one embodiment of the utility model;

[0020] Figure 3 A partial structural diagram of a sleeve in one embodiment of the utility model;

[0021] Figure 4 Another partial structural diagram of the sleeve in one embodiment of the utility model;

[0022] Figure 5 This is a three-dimensional structural diagram of an insert in one embodiment of the utility model;

[0023] Figure 6 This is a cross-sectional structural diagram of a sleeve in one embodiment of the utility model;

[0024] Figure 7 A diagram of a connection state of an output shaft, a sleeve and an insert in one embodiment of the utility model;

[0025] Figure 8 This is another connection state diagram of the output shaft, sleeve and insert in one embodiment of the utility model.

[0026] Explanation of main figure marks: 1. output shaft, 11. first socket, 2. sleeve, 21. connecting hole, 22. second socket, 221. first end, 222. second end, 23. first stop structure, 231. third socket, 232. limiting groove, 233. first stop plate, 24. second stop structure, 241. fourth socket, 242. second stop plate, 25. buffer cavity, 3. elastic member, 4. insert, 41. abutment portion, 42. locking portion, 421. locking protrusion. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the implementation of the present invention will be clearly and completely described below in conjunction with the drawings in the implementation of the present invention. Obviously, the described implementation is only a part of the implementation of the present invention, not all of the implementations. Based on the implementation of the present invention, all other implementations obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that the term "first end" means Figure 2 The left end of the "second end" is Figure 2The terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0029] like Figures 1 to 8 As shown, the sleeve installation structure in one embodiment of the utility model comprises an output shaft 1, a sleeve 2, an elastic member 3 and an insert 4. A first plug hole 11 is provided in the radial direction of the output shaft 1. A connecting hole 21 for accommodating the output shaft 1 is provided in the axial direction of the sleeve 2, and a second plug hole 22 is provided in the radial direction thereof to communicate with the connecting hole 21 and penetrate the connecting hole 21 in the radial direction. When the output shaft 1 is assembled into the connecting hole 21 of the sleeve 2, the second plug hole 22 is aligned with the first plug hole 11. A first stop structure 23 is provided inside the first end 221 of the second plug hole 22, and the first stop structure 23 can be set as a plate-like structure. The insert 4 can be set as a rod-like structure, and its two ends are respectively a locking end 42 and an abutting end 41, and the insert 4 is detachably connected to the second plug hole 22. The elastic member 3 is sleeved on the insert 4 and one end abuts against the abutting end 41, and has a tendency to drive the insert 4 to move out of the second plug hole 22 after the insert 4 is inserted into the second plug hole 22.

[0030] The above-mentioned sleeve installation structure has a locked state and an unlocked state. In the locked state, the locking end 42 is engaged with the first stop structure 23, and the engagement connection method can be abutment, clamping, pin connection, etc. In the unlocked state, the locking end 42 is disengaged from the first stop structure 23, and the elastic member 3 can drive the inserting member 4 to move toward the second end 222 of the second plug hole 22.

[0031] In the above embodiment, the second plug hole 22 radially penetrates the connection hole 21, that is, the connection hole 21 is located between the first end 221 and the second end 222 of the second plug hole 22. When the sleeve 2 and the output shaft 1 are connected, the output shaft 1 is inserted into the connection hole 21 of the sleeve 2, and the first plug hole 11 is aligned with the second plug hole 22. Then the elastic member 3 is mounted on the insert 4, and the insert 4 and the elastic member 3 are inserted into the first plug hole 11 and the second plug hole 22 as a whole from the second end 222 of the second plug hole 22. If the locking end 42 and the first stop structure 23 are in abutment engagement, the insert 4 can be rotated at this time, so that the locking end 42 is pressed against the first stop structure 23 under the drive of the elastic member 3, and then the position of the insert 4 is fixed, so that the sleeve 2 and the output shaft 1 are stably connected, so that the sleeve mounting structure is in a locked state.

[0032] When the sleeve 2 needs to be removed, the sleeve mounting structure needs to be switched to the unlocked state. During this process, the abutment end 41 is pushed to drive the locking end 42 to disengage from the first stop structure 23. At this time, the abutment end 41 is released, the elastic member 3 rebounds and drives the insert 4 to move in the direction of moving out of the second socket 22.

[0033] It should be noted that if the locking end 42 and the first stop structure 23 are joined in a manner other than abutment, a snap-fit ​​structure corresponding to the locking end 42 needs to be provided at the first stop structure 23 , or a latch needs to be installed at the locking end 42 to fix the insert 4 .

[0034] It can be seen from the above-mentioned installation and disassembly process that the sleeve installation structure in one embodiment of the utility model is easy to install and disassemble, can simplify the installation and disassembly steps of the sleeve 2, and improve the installation and disassembly efficiency of the sleeve 2.

[0035] In one embodiment, when the locking end 42 and the first stop structure 23 are connected in an abutting manner, as shown in FIG. Figure 4 As shown, the first stop structure 23 includes a first stop plate 233 and a third plug hole 231 penetrating the first stop plate 233. The third plug hole 231 is for the locking end 42 to pass through the first stop plate 233. The shape of the third plug hole 231 is consistent with the shape and size of the locking end 42, or its size can be slightly larger than the locking end 42. The locking end 42 includes a radially protruding locking protrusion 421, which protrudes along the radial direction of the locking end 42. Two locking protrusions 421 can be provided and symmetrically arranged on both sides of the locking end 42. In the locked state, the locking protrusion 421 abuts against the end of the first stop plate 233 away from the axis of the sleeve 2.

[0036] After the locking end 42 abuts against the first stop plate 233, in order to prevent the locking end 42 of the insert 4 from being separated from the first stop plate 233 without the intervention of the operator, a limiting groove 232 for accommodating the locking protrusion 421 is further provided at the first stop structure 23. The limiting groove 232 is provided on the end surface of the first stop plate 233 away from the axis of the sleeve 2. After the limiting groove 232 is provided, when the sleeve 2 is installed, the locking protrusion 421 is aligned with the limiting groove 232. After the insert 4 is released, the locking protrusion 421 is immediately moved into the limiting groove 232 driven by the elastic member 3, thereby preventing the insert 4 from accidentally rotating and moving out of the first plug hole 11 and the second plug hole 22.

[0037] Furthermore, in order to improve the limiting effect of the limiting groove 232 on the locking protrusion 421 , the size and shape of the limiting groove 232 should be as consistent as possible with the locking end 42 .

[0038] like Figure 5As shown, the abutment end 41 has a plate or block for abutting the elastic member 3. Furthermore, a strip rib, a strip groove or a cross groove may be provided at the end of the abutment end 41 facing the operator, so as to facilitate the auxiliary tool to be combined with the abutment end 41 through the joint, and facilitate the operator to use the auxiliary tool to push and rotate the abutment end 41.

[0039] like Figure 7 and Figure 8 As shown, a second stop structure 24 is provided inside the second end 222 of the second plug hole 22. When the sleeve mounting structure is in a locked state, the elastic member 3 is located between the second stop structure 24 and the abutting end 41 and abuts against the second stop structure 24. After the second stop structure 24 is provided, the second stop structure 24 and the abutting end 41 can be used to limit the end position of the elastic member 3 to prevent the elastic member 3 from contacting the output shaft 1.

[0040] Furthermore, the second stop structure 24 includes a second stop plate 242 and a fourth socket 241 passing through the second stop plate 242. The fourth socket 241 is for the locking end 42 to pass through the second stop plate 242. The shape and size of the fourth socket 241 are consistent with those of the locking end 42, or its size may be slightly larger than the locking end 42.

[0041] In one embodiment, in the axial perspective of the second plug hole 22, there is an angle between the projection of the third plug hole 231 and the projection of the fourth plug hole 241, that is, when the operator's perspective faces the second plug hole 22, the central axis of the third plug hole 231 and the central axis of the fourth plug hole 241 do not coincide, and the third plug hole 231 and the fourth plug hole 241 are not aligned. According to this scheme, when the sleeve 2 is disassembled, the abutting end 41 is pressed to drive the locking end 42 to disengage from the limiting groove 232, and the abutting end 41 is rotated to drive the locking end 42 to align with the third plug hole 231. At this time, the abutting end 41 is released, and the locking end 42 passes through the third plug hole 231 and continues to move toward the direction close to the fourth plug hole 241. Since the third plug hole 231 and the fourth plug hole 241 are not aligned, the locking end 42 cannot pass through the fourth plug hole 241, and is intercepted by the second stop plate 242, so as to prevent the insert 4 from directly popping out of the second plug hole 22 when the sleeve 2 is disassembled.

[0042] Further, after the locking end 42 is intercepted by the second stop plate 242, the insert 4 is not completely moved out of the second insertion hole 22, but in order to make the locking end 42 completely move out of the first insertion hole 11 of the output shaft 1 in this case, the operator can remove the sleeve 2, specifically, as Figure 6As shown, there is a certain distance between the second stop plate 242 and the connecting hole 21, thereby forming a buffer cavity 25 capable of accommodating the locking end 42. In addition, in order to ensure that the buffer cavity 25 can accommodate the entire locking end 42 rather than a portion of the locking end 42, the length of the locking end 42 in the axial direction of the second plug hole 22 is not greater than the length of the buffer cavity 25.

[0043] According to the above embodiment, during the process of disassembling the sleeve 2, after the locking end 42 is intercepted by the second stop plate 242, it can enter the buffer cavity 25 and then completely move out of the first socket 11 of the output shaft 1, so that the operator can remove the sleeve 2 from the output shaft 1 without completely pulling out the insert 4.

[0044] Furthermore, when the pressure limit of the elastic member 3 is relatively strong, when the locking end 42 is placed in the limit groove 232, the elastic member 3 is compressed to a longer length. Therefore, when the locking end 42 is disengaged from the limit groove 232 and moves into the buffer cavity 25, the elastic member 3 recovers its deformation to a longer length. The elastic member 3 can drive the locking end 42 to abut against the second stop structure 24 to fix the position of the insert 4, and when the sleeve 2 is not removed from the output shaft 1, the insert 4 is prevented from moving into the first socket 11 again without the intervention of the operator.

[0045] like Figure 8 As shown, when installing and removing the sleeve 2, the elastic member 3 needs to be able to produce sufficient compression deformation so that the locking end 42 can smoothly move into and out of the limiting groove 232. The elastic member 3 needs to meet the following conditions: the length of the elastic member 3 in the locked state is D1, the length of the limiting groove 232 is D2, and the length of the elastic member 3 when fully compressed is D3, wherein D1-D3>D2. D1-D3 is the maximum length that the elastic member 3 can continue to compress in the locked state. This maximum length needs to be greater than the length D2 of the limiting groove 232 to provide sufficient movement space for the locking end 42 so that the locking end 42 can move out of the limiting groove 232. Similarly. When the above conditions are met, when installing the insert 4, the locking end 42 can also be smoothly moved into the limiting groove 232.

[0046] like Figure 2 As shown, the elastic member 3 is a spring, and in the radial direction of the elastic member 3 , the inner diameter of the elastic member 3 is not less than the maximum length of the locking end 42 , so that the elastic member 3 can be smoothly mounted on the insert 4 .

[0047] Another embodiment of the present invention further provides an electric tool, which includes the above-mentioned sleeve installation structure.

[0048] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A sleeve installation structure, characterized in that: include: An output shaft (1) having a first insertion hole (11) disposed in a radial direction thereof; A sleeve (2), which is provided with a connecting hole (21) in the axial direction for receiving the output shaft (1), and is provided with a second plug hole (22) in the radial direction for communicating with the connecting hole (21) and for aligning with the first plug hole (11), and a first stop structure (23) is provided inside the first end of the second plug hole (22); An insert (4), two ends of which are a locking end (42) and an abutting end (41), and the insert (4) is detachably connected to the second plug hole (22); and An elastic member (3) is sleeved on the insert member (4) and one end of the elastic member abuts against the abutting end (41); The sleeve mounting structure has a locked state and an unlocked state; In the locked state, the locking end (42) is engaged with the first stop structure (23); In the unlocked state, the locking end (42) is disengaged from the first stop structure (23), and the elastic member (3) can drive the inserting member (4) to move toward the second end of the second insertion hole (22).

2. The sleeve installation structure according to claim 1, characterized in that: The first stop structure (23) comprises a first stop plate (233) and a third insertion hole (231) penetrating the first stop plate (233); the third insertion hole (231) allows the locking end (42) to pass through the first stop plate (233); the locking end (42) comprises a radially protruding locking protrusion (421); in the locked state, the locking protrusion (421) abuts against an end of the first stop plate (233) away from the axis of the sleeve (2).

3. The sleeve installation structure according to claim 2, characterized in that: The first stop structure (23) further comprises a limiting groove (232) for accommodating the locking protrusion (421); the limiting groove (232) is arranged on the end surface of the first stop plate (233) away from the axis of the sleeve (2).

4. The sleeve installation structure according to claim 1, characterized in that: The abutting end (41) comprises a plate body or a block body for abutting against the elastic member (3).

5. The sleeve installation structure according to claim 2, characterized in that: A second stop structure (24) is provided inside the second end of the second insertion hole (22), and the elastic member (3) is located between the second stop structure (24) and the abutment end (41) and abuts against the second stop structure (24).

6. The sleeve installation structure according to claim 5, characterized in that: The second stop structure (24) comprises a second stop plate (242) and a fourth insertion hole (241) penetrating the second stop plate (242), and the fourth insertion hole (241) is used for the locking end (42) to pass through the second stop plate (242).

7. The sleeve installation structure according to claim 6, characterized in that: In the axial viewing angle of the second plug hole (22), there is an angle between the projection of the third plug hole (231) and the projection of the fourth plug hole (241).

8. The sleeve installation structure according to claim 6, characterized in that: A buffer cavity (25) is formed between the second stop plate (242) and the connecting hole (21), and in the axial direction of the second plug hole (22), the length of the locking end (42) is not greater than the length of the buffer cavity (25).

9. The sleeve installation structure according to claim 3, characterized in that: The length of the elastic member (3) in the locked state is D1, the length of the limiting groove (232) is D2, the length of the elastic member (3) when fully compressed is D3, and D1, D2 and D3 satisfy D1-D3>D2; and / or, The elastic member (3) is a spring, and in the radial direction of the elastic member (3), the inner diameter of the elastic member (3) is not less than the maximum length of the locking end (42).

10. An electric tool, characterized in that: It comprises the sleeve mounting structure as described in any one of claims 1 to 9.

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