Tooth returning auxiliary instrument and electric tool

Abstract

The utility model discloses a tooth returning auxiliary instrument and an electric tool, the tooth returning auxiliary instrument comprises an adjusting flexible shaft, one end of the adjusting flexible shaft is provided with a first bearing, the other end of the adjusting flexible shaft is provided with a second bearing, a steel wire is rotatably arranged in the adjusting flexible shaft, and the steel wire is fixedly connected with inner rings of the first bearing and the second bearing; a mounting column is arranged on an inner ring of the second bearing and is used for being connected with an electric tool; and the thread returning screw tap is detachably connected with the inner ring of the first bearing. The adjusting flexible shaft is arranged, the rotatable steel wire connected with the inner rings of the first bearing and the second bearing is arranged in the adjusting flexible shaft, the thread returning screw tap detachably connected with the inner ring of the first bearing is arranged, and the relative angle between the thread returning screw tap and the electric tool can be freely adjusted through the adjusting flexible shaft; therefore, an electric tool can be used for driving the thread returning screw tap to perform thread returning at dead corners of a product, and the product quality and the production efficiency can be both considered.

Description

Technical Field

[0001] The utility model relates to the technical field of production tools, in particular to a tooth-reversing auxiliary device and an electric tool. Background Art

[0002] When manufacturers are producing or processing hardware products, there are cases where after the products are bent, welded and sprayed, screw threads are set at the bent parts for subsequent assembly of the products. Since the bent parts are often dead angles, traditional power tools cannot be used. A common solution is to pre-thread and protect the screws before the spraying stage. The disadvantage of this method is that the screws are sprayed together with the products, and there is a possibility that the screws will break and be difficult to remove during subsequent disassembly, and the threading rate of this method is not high. Another common method is to use a screwdriver to thread the screws. The disadvantage is that the process takes a long time and there is a problem that the threading does not meet the standard.

[0003] In the product production or processing process of the prior art, after the product is formed and the surface is sprayed, the thread holes of the product need to be straightened to facilitate later assembly. However, traditional electric tools cannot be used for bending dead corners, and the methods of pre-setting screws and manual threading are prone to screw breakage and are time-consuming, making it difficult to strike a balance between product quality and production efficiency.

[0004] Therefore, the prior art still needs to be improved and developed. Utility Model Content

[0005] In order to solve the problem in the prior art that after the product is produced or processed into shape, the surface needs to be sprayed and then the thread holes of the product need to be straightened to facilitate the later assembly, but the traditional electric tools cannot be used for the dead corners of the product bending, and the method of using preset screws is prone to cause the screw material to break and is difficult to remove, and the manual threading time is long. Therefore, the existing threading process for dead corners is difficult to take into account both product quality and production efficiency. The utility model proposes a threading auxiliary device and an electric tool.

[0006] The utility model is realized by the following technical solutions:

[0007] A tooth-returning auxiliary device, wherein the tooth-returning auxiliary device comprises:

[0008] An adjusting flexible shaft, wherein a first bearing is disposed at one end of the adjusting flexible shaft and a second bearing is disposed at the other end. A steel wire is disposed inside the adjusting flexible shaft for rotation, and the steel wire is fixedly connected to the inner rings of the first bearing and the second bearing; a mounting column is disposed on the inner ring of the second bearing, and the mounting column is used to be connected to the electric tool;

[0009] A return thread tap, wherein the return thread tap is detachably connected to the inner ring of the first bearing.

[0010] The tooth-returning auxiliary device, wherein the adjusting flexible shaft further comprises:

[0011] A sleeve, one end of which is fixedly connected to the first bearing sleeve; the other end of which is fixedly connected to the second bearing sleeve; and the steel wire is rotatably sleeved inside the sleeve.

[0012] The tooth-returning auxiliary instrument, wherein the sleeve body comprises a first end tube, a second end tube and a plurality of adjustment joints arranged between the first end tube and the second end tube, and the plurality of adjustment joints are rotatably connected in sequence;

[0013] The first bearing fixing sleeve is arranged inside the first end tube, and the second bearing fixing sleeve is arranged inside the second end tube.

[0014] The tooth-returning auxiliary device, wherein the adjusting joint comprises a connecting end and an adjusting end, and the inner holes of the connecting end and the adjusting end are arranged to intersect with each other;

[0015] The shape of the connecting end is spherical, and a connecting groove is arranged in the adjusting end at a position corresponding to the inner hole, and the shape of the connecting groove is adapted to the shape of the connecting end.

[0016] The tooth-retraction auxiliary instrument, wherein the connecting end and the adjusting end are integrally formed, and the adjusting joint is a rigid adjusting joint.

[0017] The tooth-retraction auxiliary instrument, wherein the connecting end of the adjacent adjustment joint is embedded in the connecting groove, and the connecting end is connected in a damped rotation manner in the connecting groove.

[0018] The said back-tightening auxiliary device, wherein the back-tightening tap comprises a mounting portion, and the mounting portion is the same as the mounting post;

[0019] The inner ring of the first bearing is provided with a mounting groove, the cross-sectional shape of the mounting portion is adapted to the mounting groove, and the mounting portion is detachably sleeved in the mounting groove.

[0020] The tooth-returning auxiliary device, wherein the cross-sectional shape of the mounting portion is a regular polygon;

[0021] The end of the mounting portion is smoothly chamfered.

[0022] The aforementioned auxiliary instrument for back-tightening, wherein the back-tightening tap further comprises a functional portion, wherein the functional portion is used for back-tightening, and a plurality of the back-tightening taps are provided, and the functional portions of the plurality of the back-tightening taps are different.

[0023] An electric tool, wherein the electric tool comprises any one of the above-mentioned teeth-retraction auxiliary instruments.

[0024] The beneficial effects of the utility model are as follows: the utility model provides an adjustable flexible shaft, a rotatable steel wire is provided inside the adjustable flexible shaft and is connected to the first bearing and the inner ring of the second bearing, and a return thread tap is provided which is detachably connected to the inner ring of the first bearing. The relative angle between the return thread tap and the electric tool can be freely adjusted by adjusting the flexible shaft, so that the return thread tap can be driven by the electric tool to return the thread in the dead angle of the product, thereby taking into account both product quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the use status of the utility model tooth-returning auxiliary device;

[0026] Figure 2 It is a cross-sectional view of the adjustable flexible shaft in the tooth-returning auxiliary device of the utility model;

[0027] Figure 3 It is a cross-sectional view of the adjustment joint in the tooth-returning auxiliary device of the utility model;

[0028] Figure 4 The utility model is a structural schematic diagram of a thread-returning tap in a thread-returning auxiliary instrument.

[0029] exist Figures 1 to 4 In: 100, adjusting flexible shaft; 110, first bearing; 111, mounting groove; 120, second bearing; 121, mounting column; 130, steel wire; 140, sleeve; 141, first end tube; 142, second end tube; 143, adjusting joint; 143a, connecting end; 143b, adjusting end; 143c, connecting groove; 200, return thread tap; 210, mounting part; 220, functional part; 300, electric tool. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] 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 indications will also change accordingly.

[0032] 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.

[0033] In the product production or processing process of the prior art, after the product is formed and the surface is sprayed, the thread holes of the product need to be straightened to facilitate later assembly. However, traditional electric tools cannot be used for bending dead corners, and the methods of pre-setting screws and manual threading are prone to screw breakage and are time-consuming, making it difficult to strike a balance between product quality and production efficiency.

[0034] Based on the above problems in the prior art, Figure 1 and Figure 2 As shown, the utility model provides a back-threading auxiliary device, which includes: an adjusting flexible shaft 100, one end of which is provided with a first bearing 110, and the other end of which is provided with a second bearing 120, and the internal rotation of the adjusting flexible shaft 100 is provided with a steel wire 130, and the steel wire 130 is fixedly connected to the inner rings of the first bearing 110 and the second bearing 120; a mounting column 121 is provided on the inner ring of the second bearing 120, and the mounting column 121 is used to connect with the electric tool 300; a back-threading tap 200, and the back-threading tap 200 is detachably connected to the inner ring of the first bearing 110.

[0035] In the product production or processing process of the prior art, after the product is formed, the product's thread holes need to be straightened after surface spraying for easy assembly later. However, the traditional electric tool 300 cannot be used for the bending dead corners. The pre-set screws and manual threading methods are prone to screw breakage and are time-consuming, making it difficult to take into account both product quality and production efficiency.

[0036] In the above embodiment, if Figure 1 and Figure 2 As shown in FIG. 1 , the main body of the tooth-returning auxiliary instrument of the utility model is composed of an adjustable flexible shaft 100 and a tooth-returning taper wire, wherein the specific structure of the adjustable flexible shaft 100 is as follows Figure 2As shown, a first bearing 110 is provided at one end of the adjusting flexible shaft 100, and a second bearing 120 is provided at the other end. A steel wire 130 is provided inside the adjusting flexible shaft 100. The steel wire 130 has a certain flexibility so as to adjust the relative angles of the two ends. The two ends of the steel wire 130 are respectively fixedly connected to the inner rings of the first bearing 110 and the second bearing 120, so that when one end of the steel wire 130 is driven to rotate, the other end can rotate synchronously, thereby achieving the effect of auxiliary transmission. In this embodiment, a mounting column 121 is provided on the inner ring of the second bearing 120, and the mounting column 121 is adapted to the structure of the drill bit mounting part of the electric tool 300 (electric drill) in the prior art, that is, the adjusting flexible shaft 100 can be installed on the electric tool 300 through the mounting column 121, so as to achieve the effect of driving the steel wire 130 in the adjusting flexible shaft 100 to rotate by the electric tool 300; on the other hand, the above-mentioned return thread tap 200 is detachably connected to the inner ring of the first bearing 110. When the above-mentioned electric tool 300 is turned on, the inner ring at the second bearing 120 is driven to rotate, which drives the steel wire 130 to rotate, and the inner ring of the first bearing 110 to rotate, thereby driving the return thread tap 200 to rotate, thereby achieving the effect of returning the thread at the dead angle of the product under the action of the return thread auxiliary device.

[0037] Specifically, Figure 2 As shown, the above-mentioned adjustable flexible shaft 100 also includes a sleeve 140, and the above-mentioned steel wire 130 is sleeved inside the sleeve 140. By setting the sleeve 140, the rotating steel wire 130 can be covered to ensure safe use. At the same time, the sleeve 140 also has the function of fixing the angles of both ends of the steel wire 130 (detailed below). In this embodiment, one end of the sleeve 140 is sleeved and fixedly connected with the first bearing 110. The mounting structure here fixes the outer ring of the first bearing 110 and does not affect the free rotation of the inner ring. The other end of the sleeve 140 is sleeved and fixedly connected with the second bearing 120. The mounting structure here fixes the outer ring of the second bearing 120 and does not affect the free rotation of the inner ring. Therefore, during the rotation of the steel wire 130 sleeved inside the sleeve 140, the sleeve 140 does not rotate or rotates slightly, which can ensure the safety of users.

[0038] Furthermore, if Figure 2As shown, in order to realize the installation of the above-mentioned first bearing 110 and the second bearing 120, in this embodiment, the sleeve body 140 also includes a first end tube 141 and a second end tube 142, and a plurality of adjustment joints 143 arranged between the first end tube 141 and the second end tube 142, and the plurality of adjustment joints 143 are rotatably connected in sequence. The above-mentioned first bearing 110 is fixedly sleeved inside the first end tube 141, and the second bearing 120 is fixedly sleeved inside the second end tube 142. Since the two ends of the steel wire 130 are respectively fixedly connected to the inner rings of the first bearing 110 and the second bearing 120, the relative distance between the first bearing 110 and the second bearing 120 is fixed after the installation is completed, forming a limit for the plurality of adjustment joints 143 therebetween, which can ensure that the plurality of adjustment joints 143 will not separate, forming a complete adjustment flexible shaft 100 for easy use.

[0039] In the above embodiment, if Figure 3 As shown, in order to adjust the flexible shaft 100 to a suitable angle for operation during use and ensure the stability of use, in this embodiment, the adjustment joint 143 is specifically configured to include a connecting end 143a and an adjusting end 143b, wherein the connecting end 143a and the adjusting end 143b are provided with inner holes, and the inner holes of the connecting end 143a and the adjusting end 143b are intersected to form a sleeve for the steel wire 130; at the same time, the shape of the connecting end 143a is set to be spherical, and correspondingly, a connecting groove 143c is provided at a position corresponding to the inner hole in the adjusting end 143b, and the connecting groove 143c is provided at the position corresponding to the inner hole. The shape of 3c is adapted to the shape of the connecting end 143a, that is, it is also spherical. During specific installation, in two adjacent adjustment joints 143, the connecting end 143a and the connecting groove 143c form a chimeric setting, so that the two adjustment joints 143 are connected to each other and can rotate to a certain extent. On the other hand, during specific settings, a predetermined concave-convex structure or a coating can be set on the surface of the connecting end 143a, so that the connecting end 143a and the connecting groove 143c form a damping rotation connection effect, so that the user can pre-set the angle of the adjustment flexible shaft 100 to adapt to the blind spot of the product and facilitate subsequent use.

[0040] In the above embodiment, if Figure 3 As shown, the above-mentioned connecting end 143a and adjusting end 143b are preferably made in an integral molding manner during actual setting. Specifically, they can be made of PVC material through injection molding. At the same time, PVC material with higher rigidity should be selected to reduce the degree of damage to the adjusting joint caused by the rotation of the steel wire 130 to ensure safety during use.

[0041] In another embodiment of the present invention, Figure 4As shown, the return thread tap 200 includes a mounting portion 210, and correspondingly, the inner ring of the first bearing 110 is provided with a mounting groove 111, and the cross-sectional shape of the mounting portion 210 is adapted to the cross-sectional shape of the mounting groove 111, so that the return thread tap 200 can be installed in the mounting groove 111 through the mounting portion 210, so as to fix the return thread tap 200 on the adjusting flexible shaft 100. In actual setting, the mounting portion 210 should have the same structure as the mounting column 121 of the second bearing 120, and both are adapted to the mounting portion 210 structure of the electric tool 300. The purpose of such setting is that when the position where the return thread is required is not a dead angle, the return thread tap 200 can be directly installed on the electric tool 300 for use. When the position where the return thread is required is a dead angle, the adjusting flexible shaft 100 can be installed and then the return thread tap 200 can be installed for use, so as to meet a variety of usage environments.

[0042] In the above embodiment, the cross-sectional shape of the above-mentioned mounting portion 210 is preferably set to a regular polygon, which can be a triangle, a square, a regular hexagon, etc. The advantage of such a setting is that it can not only ensure the stable installation of the back-threading tap 200, but also avoid axial rotation of the mounting portion 210 in the mounting groove 111 during use, thereby ensuring the transmission efficiency of the back-threading auxiliary device.

[0043] In another embodiment of the present invention, Figure 4 As shown, the above-mentioned return thread tap 200 also includes a functional part 220, which is used for return thread. When the functional part 220 is actually manufactured, reference can be made to the end structure of the tap in the prior art to achieve the same return thread effect as the prior art. In this embodiment, the above-mentioned return thread tap 200 can be provided with a plurality of functional parts 220 of the plurality of return thread taps 200, which are different, and are used to adapt to various return thread types. In addition, the length dimensions of the plurality of return thread taps 200 can also be set to be different, so as to be used for different actual environments.

[0044] Based on the above embodiments, the actual use process of the tooth-returning auxiliary device of the utility model is as follows:

[0045] After the hardware products are welded and sprayed, the preset screw threads of the hardware products need to be re-threaded. When the re-threading position is not a dead angle position, the re-threading tap 200 in the re-threading auxiliary device can be directly connected to the electric tool 300 to re-thread the corresponding re-threading position;

[0046] When the return threading position is a dead angle position, the mounting column 121 of the second bearing 120 of the adjusting flexible shaft 100 can be connected to the electric tool 300, and then the connecting end 143a of the return threading tap 200 can be installed in the connecting groove 143c of the first bearing 110. The user manually bends the sleeve 140 to rotate the plurality of adjusting joints 143 in the required direction, thereby driving the internal steel wire 130 to bend with a certain curvature, thereby achieving the effect of changing the relative angle between the electric tool 300 and the return threading tap 200, so that the return threading tap 200 can correspond to the dead angle position, or by adjusting the length of the flexible shaft 100 itself to form an avoidance with the product structure. When performing the return threading, the user fixes the first bearing 110 with one hand and controls the power tool 300 to start with the other hand, so that the return threading tap 200 corresponds to the return threading position, thereby achieving a fast return threading operation.

[0047] Based on the above embodiments, the utility model further provides an electric tool, which includes the back-threading auxiliary device described in any one of the above embodiments, and the back-threading auxiliary device includes: an adjustable flexible shaft, one end of the adjustable flexible shaft is provided with a first bearing, the other end is provided with a second bearing, a steel wire is provided for rotation inside the adjustable flexible shaft, and the steel wire is fixedly connected to the inner rings of the first bearing and the second bearing; a mounting column is provided on the inner ring of the second bearing, and the mounting column is used to connect with the electric tool; a back-threading tap, and the back-threading tap is detachably connected to the inner ring of the first bearing. The utility model is provided with an adjustable flexible shaft, a steel wire connected to the inner rings of the first bearing and the second bearing is provided inside the adjustable flexible shaft, and a back-threading tap detachably connected to the inner ring of the first bearing is provided, and the relative angle between the back-threading tap and the electric tool can be freely adjusted by adjusting the flexible shaft, so that the back-threading tap can be driven by the electric tool to back-thread in the dead angle of the product, and both product quality and production efficiency can be taken into account.

[0048] In summary, the utility model provides a back-threading auxiliary device and an electric tool, wherein the back-threading auxiliary device comprises: an adjusting flexible shaft, wherein a first bearing is arranged at one end of the adjusting flexible shaft, and a second bearing is arranged at the other end, and a steel wire is arranged inside the adjusting flexible shaft for rotation, and the steel wire is fixedly connected to the inner rings of the first bearing and the second bearing; a mounting column is arranged on the inner ring of the second bearing, and the mounting column is used to connect with the electric tool; and a back-threading tap, and the back-threading tap is detachably connected to the inner ring of the first bearing. The utility model is provided with an adjusting flexible shaft, wherein a steel wire connected to the inner rings of the first bearing and the second bearing and rotatable is arranged inside the adjusting flexible shaft, and a back-threading tap detachably connected to the inner ring of the first bearing is arranged, and the relative angle between the back-threading tap and the electric tool can be freely adjusted by adjusting the flexible shaft, so that the back-threading tap can be driven by the electric tool to back-thread in the dead angle of the product, and both product quality and production efficiency can be taken into account.

[0049] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made according to the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A tooth-returning auxiliary device, characterized in that: The tooth-returning auxiliary device comprises: An adjusting flexible shaft, wherein a first bearing is disposed at one end of the adjusting flexible shaft and a second bearing is disposed at the other end. A steel wire is disposed inside the adjusting flexible shaft for rotation, and the steel wire is fixedly connected to the inner rings of the first bearing and the second bearing; a mounting column is disposed on the inner ring of the second bearing, and the mounting column is used to be connected to the electric tool; A return thread tap, wherein the return thread tap is detachably connected to the inner ring of the first bearing.

2. The tooth-retraction auxiliary device according to claim 1, characterized in that: The adjustable flexible shaft also includes: A sleeve, one end of which is fixedly connected to the first bearing sleeve; the other end of which is fixedly connected to the second bearing sleeve; and the steel wire is rotatably sleeved inside the sleeve.

3. The tooth-retraction auxiliary device according to claim 2, characterized in that: The sleeve body comprises a first end tube, a second end tube and a plurality of adjustment joints arranged between the first end tube and the second end tube, wherein the plurality of adjustment joints are rotatably connected in sequence; The first bearing fixing sleeve is arranged inside the first end tube, and the second bearing fixing sleeve is arranged inside the second end tube.

4. The tooth-retraction auxiliary device according to claim 3, characterized in that: The adjusting joint comprises a connecting end and an adjusting end, and the inner holes of the connecting end and the adjusting end are intersectingly arranged; The shape of the connecting end is spherical, and a connecting groove is arranged in the adjusting end at a position corresponding to the inner hole, and the shape of the connecting groove is adapted to the shape of the connecting end.

5. The tooth-retraction auxiliary device according to claim 4, characterized in that: The connecting end and the adjusting end are integrally formed, and the adjusting joint is a rigid adjusting joint.

6. The tooth-retraction auxiliary device according to claim 4, characterized in that: The connecting ends of adjacent adjusting joints are embedded in the connecting grooves, and the connecting ends are connected in a damped rotation manner in the connecting grooves.

7. The tooth-retraction auxiliary device according to claim 1, characterized in that: The return thread tap includes a mounting portion, and the mounting portion is the same as the mounting column; The inner ring of the first bearing is provided with a mounting groove, the cross-sectional shape of the mounting portion is adapted to the mounting groove, and the mounting portion is detachably sleeved in the mounting groove.

8. The tooth-retraction auxiliary device according to claim 7, characterized in that: The cross-sectional shape of the mounting portion is a regular polygon; The end of the mounting portion is smoothly chamfered.

9. The tooth-retraction auxiliary device according to claim 7, characterized in that: The return thread tap further comprises a functional portion, and the functional portion is used for return thread. A plurality of the return thread taps are provided, and the functional portions of the plurality of return thread taps are different.

10. An electric tool, characterized in that: The electric tool comprises the tooth-retraction auxiliary instrument as described in any one of claims 1 to 9.

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