Automatic homing device of electric assembly tool

Abstract

The utility model provides an automatic homing device for an electric assembly tool. The automatic homing device comprises a base; the guide rod is fixed on the base; the first end of the connecting rod assembly is movably arranged outside the guide rod in a sleeving manner; the guide rod is sleeved with the spring, the first end of the spring is fixed to the guide rod, the second end of the spring is closer to the base than the first end of the spring, and the second end of the spring is fixed to the first end of the connecting rod assembly; and the assembling tool mounting mechanism is connected to the second end of the connecting rod assembly. When a product is assembled, the electric assembling tool is pulled, the spring is lengthened in the direction close to the base, and an operator can use the electric assembling tool to assemble the product. And after assembly is completed, the electric assembly tool is loosened, and the electric assembly tool resets in the direction away from the base under the action of elastic restoring force of the spring, so that the occupied space of the electric assembly tool in the base area is saved, and the convenience of assembling and grabbing components in the base area is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to an automatic return device for an electric assembly tool. Background Art

[0002] When assembling products, electric assembly tools such as electric screwdrivers are usually used. In the prior art, the electric assembly tool is hung above the product to be assembled for easy access at any time. Although this method has a certain degree of convenience, it will form a certain obstacle to the assembly and the grasping of parts, affecting the operation efficiency.

[0003] In addition, when using an electric screwdriver to assemble products, there is a phenomenon that the screw is driven obliquely, resulting in the screw hole being damaged and the product defect rate increasing. Summary of the Utility Model

[0004] In view of the above problems, the utility model provides an automatic return device for an electric assembly tool, including:

[0005] A base;

[0006] A guide rod, fixed to the base;

[0007] A connecting rod assembly, the first end of which is movably sleeved outside the guide rod;

[0008] A spring, sleeved outside the guide rod, the first end of the spring is fixed to the guide rod, the second end of the spring is closer to the base than the first end of the spring, and the second end of the spring is fixed to the first end of the connecting rod assembly;

[0009] An assembly tool mounting mechanism, connected to the second end of the connecting rod assembly.

[0010] According to this technical solution, the assembly tool mounting mechanism is fixed through the connecting rod assembly and the spring. When assembling products, the electric assembly tool mounted on the assembly tool mounting mechanism is pulled, and the spring is stretched in the direction close to the base. The operator can use the electric assembly tool for assembly. After the assembly is completed, the electric assembly tool is released, and under the action of the elastic restoring force of the spring, the electric assembly tool returns to its original position in the direction away from the base, thus saving the occupied space of the electric assembly tool in the base area, avoiding the electric assembly tool from interfering with the assembly operation, and improving the convenience of assembling and grasping parts in the base area.

[0011] In an alternative technical solution of the utility model, the connecting rod assembly includes:

[0012] A rotating shaft;

[0013] The first rod body, a through hole for the guiding rod to penetrate is provided at the first end of the first rod body, the first end of the first rod body is fixed to the spring, and a first shaft hole for the rotating shaft to penetrate is provided at the second end of the first rod body;

[0014] The second rod body, a second shaft hole for the rotating shaft to penetrate is provided at the first end of the second rod body;

[0015] The torsion spring, including a torsion spring body, the torsion spring body has a first end of the torsion spring body and a second end of the torsion spring body, the torsion spring body is sleeved on the rotating shaft, the first end of the torsion spring body is fixed to the first rod body, and the second end of the torsion spring body is connected to the second rod body; applying a force to the second end of the second rod body to increase the angle between the second rod body and the first rod body, the torsion spring generates an elastic restoring force to reduce the angle between the second rod body and the first rod body.

[0016] According to this technical solution, the connecting rod assembly can achieve automatic reset through the torsion spring, that is, when the connecting rod assembly is released, the angle between the first rod body and the second rod body decreases, thereby saving the occupied space of the connecting rod assembly, reducing the obstacles to assembly and grasping parts, and improving the convenience. The structure of the connecting rod assembly is simple, the materials are easy to obtain, which is beneficial to saving manufacturing costs and reducing the processing difficulty.

[0017] In an alternative technical solution of the present invention, the first rod body is perpendicular to the guiding rod, the second rod body and the first rod body both extend in the horizontal direction, and the horizontal direction is perpendicular to the guiding rod.

[0018] According to this technical solution, the second rod body and the first rod body both extend in the horizontal direction. Under the action of the torsion spring, the second rod body rotates around the rotating shaft, and the second rod body can utilize the elastic restoration of the torsion spring to make the second rod body return to a position tending to coincide with the first rod body, thereby saving the occupied space of the connecting rod assembly and optimizing the space utilization rate.

[0019] In an alternative technical solution of the present invention, it further includes a limiting rod, which is fixed to the base and parallel to the guiding rod, and the limiting rod is located on the side of the first rod body away from the assembling tool installation mechanism.

[0020] According to this technical solution, the setting of the limiting rod can reduce the rotation amplitude when the connecting rod assembly is reset, so that the first rod body rotates to the side where the limiting rod faces the operation side (the side where the operator is during assembly), that is, stops rotating in the direction away from the operation side of the limiting rod, and vibrates back and forth within the range where the limiting rod faces the operation side until it stops, improving the reset efficiency of the connecting rod assembly and shortening the path for taking the electric assembling tool, which is beneficial to improving the assembly efficiency.

[0021] In an alternative technical solution of the present invention, the length of the first rod body is not less than the distance between the guiding rod and the limiting rod.

[0022] According to this technical solution, during the process of the connecting rod assembly moving away from the base, the length of the first rod body is not less than the distance between the guiding rod and the limiting rod, so that the first rod body can be limited by the limiting rod to the side of the limiting rod facing the electric assembly tool, avoiding the connecting rod assembly moving into the gap between the guiding rod and the limiting rod, shortening and simplifying the rotation path of the connecting rod assembly, and improving the convenience of taking and using the connecting rod assembly.

[0023] In an alternative technical solution of the present utility model, the assembly tool mounting mechanism includes:

[0024] A first clamping member;

[0025] A second clamping member, which encloses with the first clamping member to form a space for accommodating the electric assembly tool;

[0026] A connecting member, connecting the first clamping member and the second clamping member.

[0027] According to this technical solution, the electric assembly tool is clamped by the first clamping member and the second clamping member, and the assembly tool mounting mechanism is fixed to the connecting rod assembly, which can ensure the position stability of the electric assembly tool during use, reduce or even avoid the situation of the screw being driven obliquely, and is beneficial to improving the yield of the product.

[0028] In an alternative technical solution of the present utility model, a positioning hole is provided on the base, and the base is positioned by bolts passing through the positioning hole.

[0029] According to this technical solution, by fixing the base to fix the electric assembly tool automatic return device, the position stability of the electric assembly tool automatic return device can be ensured when pulling the connecting rod assembly, and the reliable progress of the assembly work can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of the electric assembly tool automatic return device in an embodiment of the present utility model.

[0031] Figure 2 It is a schematic diagram of the connection node between the connecting rod assembly and the torsion spring in an embodiment of the present utility model.

[0032] Figure 3 It is a schematic diagram of the connection node between the assembly tool mounting mechanism and the second rod body in an embodiment of the present utility model.

[0033] Reference numerals:

[0034] Base 1; guide rod 2; connecting rod assembly 3; rotating shaft 31; first rod body 32; support column 321; second rod body 33; torsion spring 34; first end 341 of the torsion spring body; second end 342 of the torsion spring body; spring 4; sleeve 41; bolt 42; assembly tool mounting mechanism 5; first clamping member 51; second clamping member 52; connecting plate 53; through hole 531; connecting shaft 54; electric assembly tool 6; limiting rod 7. Detailed implementation

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] As Figure 1 shown, this embodiment provides an automatic return device for an electric assembly tool, including: a base 1, a guide rod 2, a connecting rod assembly 3, a spring 4, and an assembly tool mounting mechanism 5. The guide rod 2 is fixed to the base 1; the first end of the connecting rod assembly 3 is movably sleeved outside the guide rod 2; the spring 4 is sleeved outside the guide rod 2, and the first end of the spring 4 is fixed to the guide rod 2. The second end of the spring 4 is closer to the base 1 than the first end of the spring 4, and the second end of the spring 4 is fixed to the first end of the connecting rod assembly 3; the assembly tool mounting mechanism 5 is connected to the second end of the connecting rod assembly 3 for mounting the electric assembly tool 6.

[0037] In the above manner, the assembly tool mounting mechanism 5 is fixed to the spring 4 through the connecting rod assembly 3. When assembling a product, the electric assembly tool 6 mounted on the assembly tool mounting mechanism 5 is pulled, and the spring 4 is stretched in the direction close to the base 1, and the operator can use the electric assembly tool 6 for assembly. After the assembly is completed, the electric assembly tool 6 is released, and under the action of the elastic restoring force of the spring 4, the electric assembly tool 6 returns to its original position in the direction away from the base 1, thereby saving the occupied space of the electric assembly tool 6 in the base 1 area, avoiding the electric assembly tool 6 from interfering with the assembly operation, and improving the convenience of assembling and grasping parts in the base 1 area.

[0038] Specifically, as Figure 1 shown, the automatic return device for the electric assembly tool further includes a fixing component. The fixing component includes a sleeve 41 sleeved on the guide rod 2. The circumferential direction of the sleeve 41 is provided with a threaded hole, and a bolt 42 is screwed into the threaded hole. The rod portion of the bolt 42 abuts against the circumferential wall of the guide rod 2 to realize the limit of the first end of the spring 4. In some embodiments, the first end of the spring 4 can also be limited in other ways, and this embodiment does not make a limitation on this.

[0039] In this embodiment, the spring 4 is a tension spring. When the two ends of the spring 4 are pulled apart by an external force, the spring 4 can generate a force that pulls the two ends of the spring 4 back together. That is, when the external force on the tension spring 4 is removed, under the action of the elastic restoring force of the spring 4, the link assembly 3 can be pulled back to the initial position.

[0040] In a preferred embodiment of the present utility model, as Figure 1 , Figure 2 shown, the link assembly 3 includes: a rotating shaft 31, a first rod body 32, a second rod body 33 and a torsion spring 34. A through hole for the guide rod 2 to pass through is provided at the first end of the first rod body 32. The first end of the first rod body 32 is fixed to the spring 4. A first shaft hole for the rotating shaft 31 to pass through is provided at the second end of the first rod body 32. A second shaft hole for the rotating shaft 31 to pass through is provided at the first end of the second rod body 33. The second end of the second rod body 33 is movably connected to the assembly tool mounting mechanism 5. The torsion spring 34 includes a torsion spring body having a first end 341 and a second end 342 of the torsion spring body. The torsion spring body is sleeved on the rotating shaft 31, and the first end 341 of the torsion spring body is fixed to the first rod body 32, and the second end 342 of the torsion spring body is connected to the second rod body 33. When an external force is applied to the second end of the second rod body 33 to increase the angle between the second rod body 33 and the first rod body 32, the torsion spring 34 generates an elastic restoring force that reduces the angle between the second rod body 33 and the first rod body 32.

[0041] In this embodiment, when an external force is applied to the electric assembly tool 6, the angle between the first rod body 32 and the second rod body 33 increases. The link assembly 3 can achieve automatic reset through the torsion spring 34. That is, when the electric assembly tool 6 is released, when the force applied to the link assembly 3 is removed, under the action of the elastic restoring force of the torsion spring 34, the angle between the first rod body 32 and the second rod body 33 decreases, thereby saving the occupied space of the link assembly 3, reducing the obstacle to the assembly and the grasping of parts, and improving the convenience. The structure of the link assembly 3 provided in this embodiment is simple, the materials are easy to obtain, which is beneficial to saving the manufacturing cost and reducing the processing difficulty.

[0042] Specifically, when a force is applied to pull the electric assembly tool 6, the spring 4 is stretched along the guide rod 2 (since the applied force is not strictly along the axial direction or downward of the spring 4, when the spring 4 is subjected to a downward tensile force, it will be subjected to a tensile force in the circumferential direction of the guide rod 2 along with the rotation of the first end of the first rod body 32). The link assembly 3 moves downward synchronously, and the torsion spring 34 is in a state of being subjected to an external force (tension state). The second rod body 33 rotates around the rotating shaft 31 under the action of the external force, and the angle between the second rod body 33 and the first rod body 32 increases. Among them, when the torsion spring 34 is in a tension state, the rotation direction of the second rod body 33 is as Figure 2as indicated by the arrow direction at the second end of the second rod body 33.

[0043] When the external force applied to the electric assembly tool 6 is removed, the spring 4 drives the link assembly 3 and the assembly tool mounting mechanism 5 to move upward along the guide rod 2, reducing the occupied space of the electric assembly tool 6. The first end of the first rod body 32 is reset under the reaction force of the spring 4 (as Figure 2 the arrow direction at the guide rod 2 in the figure is the reset rotation direction of the first end of the first rod body 32). At the same time, the torsion spring 34 undergoes elastic recovery, and the included angle between the second rod body 33 and the first rod body 32 decreases, thereby saving the occupied space of the link assembly 3 and optimizing the space utilization rate. Among them, when the torsion spring 34 is in the elastic recovery state, the rotation direction of the first end of the second rod body 33 is as Figure 2 indicated by the arrow direction at the torsion spring 34 in the figure.

[0044] In the preferred embodiment of the present invention, the first rod body 32 is perpendicular to the guide rod 2, and the second rod body 33 and the first rod body 32 both extend in the horizontal direction, and the horizontal direction is perpendicular to the guide rod 2. The second rod body 33 and the first rod body 32 both extend in the horizontal direction. Under the action of the torsion spring 34, the second rod body 33 rotates around the rotating shaft 31, and the second rod body 33 can utilize the elastic recovery of the torsion spring 34 to make the second rod body 34 return to a position tending to coincide with the first rod body 33, thereby saving the occupied space of the link assembly 3 and optimizing the space utilization rate.

[0045] Furthermore, in order to improve the connection stability between the first end 341 of the torsion spring body and the first rod body 32, the first end 341 of the torsion spring body can be bent, and a support column 321 can be added on the first rod body 32, and the first end 341 of the torsion spring body hooks the support column 321. In order to improve the connection stability between the second end 342 of the torsion spring body and the second rod body 33, the second end 342 of the torsion spring body is wound around the bottom of the second rod body 33. In order to prevent the top of the rotating shaft 31 of the torsion spring body from coming out and the rotating shaft 31 from slipping, fixing members (not shown in the figure) can be respectively provided at the top and bottom of the rotating shaft 31.

[0046] Continue to refer to Figure 2 As shown in the figure, in the preferred embodiment of the present invention, the electric assembly tool automatic return device further includes a limit rod 7, which is fixed to the base 1 and is parallel to the guide rod 2, and the limit rod 7 is located on the side of the first rod body 32 away from the assembly tool mounting mechanism 5.

[0047] The setting of the limit rod 7 can reduce the rotation amplitude of the link assembly 3 (mainly the first rod body 32) during reset (as Figure 2 the arrow direction at the guide rod 2 in the figure is the rotation direction of the first end of the first rod body 32 driven by the spring 4 during the removal of the external force) ，The first rod body 32 is rotated on the side of the limit rod 7 facing the operation side (the side of the limit rod 7 facing the operation side refers to the side where the operator is located during assembly and is also the side where the electric assembly tool 6 is located), that is, the rotation in the direction away from the operation side of the limit rod 7 is stopped, and it vibrates back and forth within the range of the limit rod 7 facing the operation side until it stops, which improves the reset efficiency of the link assembly 3 and also shortens the path for accessing the electric assembly tool 6, facilitating the improvement of the assembly efficiency.

[0048] In a preferred embodiment of the present utility model, the length of the first rod body 32 is not less than the distance between the guide rod 2 and the limit rod 7.

[0049] In this embodiment, during the process of the link assembly 3 moving in the direction away from the base 1, the length of the first rod body 32 is not less than the distance between the guide rod 2 and the limit rod 7, so that the first rod body 32 can be limited by the limit rod 7 to the side of the limit rod 7 facing the electric assembly tool 6, avoiding the link assembly 3 moving into the gap between the guide rod 2 and the limit rod 7, shortening and simplifying the rotation path of the link assembly 3, and improving the convenience of accessing the link assembly 3.

[0050] In a preferred embodiment of the present utility model, the base 1 is provided with a positioning hole (not shown in the figure), and the base 1 is positioned with the assembled workbench surface by bolts passing through the positioning hole. By fixing the base 1, the automatic return device of the electric assembly tool 6 is fixed, which can ensure the position stability of the automatic return device of the electric assembly tool 6 when pulling the electric assembly tool 6 ( Figure 2 the arrow indication direction at the second rod body 33 in the figure is the pulling direction), ensuring the reliable progress of the assembly work.

[0051] As Figure 3 shown, the assembly tool mounting mechanism 5 includes: a first clamping member 51, a second clamping member 52 and a connecting member (not shown in the figure). The second clamping member 52 and the first clamping member 51 enclose a space for accommodating the electric assembly tool 6; the connecting member fixedly connects the first clamping member 51 and the second clamping member 52. By clamping the electric assembly tool 6 with the first clamping member 51 and the second clamping member 52, and the assembly tool mounting mechanism 5 is connected to the link assembly 3, the position stability of the electric assembly tool 6 during use can be ensured, reducing or even avoiding the occurrence of skewed screws, which is beneficial to improving the yield of products. Technicians can select appropriate connecting members according to needs. For example, by correspondingly opening fixing holes in the first clamping member 51 and the second clamping member 52, and screwing bolts through the fixing holes of the two clamping members with nuts, the detachable fixation of the first clamping member 51 and the second clamping member 52 is realized.

[0052] In some embodiments, the assembly tool mounting mechanism 5 further includes a connecting plate 53 and a connecting shaft 54. The connecting plate 53 is fixed to the first clamping member 51 and / or the second clamping member 52. The first clamping member 51 and / or the second clamping member 52 are movably connected to the second end of the second rod body 32 through the connecting shaft 54, so that the assembly tool mounting mechanism 5 can rotate around the connecting shaft 54, improving the flexibility and convenience of use of the automatic reset device of the electric assembly tool. The connecting plate 53 may be provided with a through hole 531 for a wire connected to the electric assembly tool to pass through. In some embodiments, the first clamping member 51 and the second clamping member 52 may also be fixed to the second end of the second rod body 32 only through the connecting plate 53.

[0053] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic return device for electric assembly tools, characterized in that: include: Base; A guide rod, fixed to the base; A connecting rod assembly, wherein a first end of the connecting rod assembly is movably sleeved on the outside of the guide rod; A spring, sleeved on the outside of the guide rod, wherein the first end of the spring is fixed to the guide rod, the second end of the spring is closer to the base than the first end of the spring, and the second end of the spring is fixed to the first end of the connecting rod assembly; An assembly tool mounting mechanism is connected to the second end of the connecting rod assembly.

2. The automatic return device for electric assembly tools according to claim 1, characterized in that: The connecting rod assembly comprises: Rotating shaft; A first rod body, wherein a through hole is provided at a first end of the first rod body for the guide rod to pass through, the first end of the first rod body is fixed to the spring, and a first shaft hole is provided at a second end of the first rod body for the rotating shaft to pass through; A second rod body, wherein a first end of the second rod body is provided with a second shaft hole for the rotating shaft to pass through; A torsion spring comprises a torsion spring body and a first end and a second end respectively located at both ends of the torsion spring body, wherein the torsion spring body is sleeved on the rotating shaft, the first end of the torsion spring body is fixed to the first rod body, and the second end of the torsion spring body is connected to the second rod body; a force is applied to the second end of the second rod body to increase the angle between the second rod body and the first rod body, and the torsion spring generates an elastic restoring force to reduce the angle between the second rod body and the first rod body.

3. The automatic return device for electric assembly tools according to claim 2, characterized in that: The first rod body is vertically arranged to the guide rod, and the second rod body and the first rod body both extend in a horizontal direction, and the horizontal direction is vertical to the guide rod.

4. The automatic return device for electric assembly tools according to claim 3, characterized in that: It also includes a limiting rod, which is fixed to the base and parallel to the guide rod, and the limiting rod is located on a side of the first rod body away from the assembly tool installation mechanism.

5. The automatic return device for electric assembly tools according to claim 4, characterized in that: The length of the first rod body is not less than the distance between the guide rod and the limiting rod.

6. The automatic return device for electric assembly tools according to any one of claims 1 to 5, characterized in that: The assembly tool installation mechanism comprises: a first clamping member; A second clamping member, arranged together with the first clamping member to form a space for accommodating the electric assembly tool; A connecting member connects the first clamping member and the second clamping member.

7. The automatic return device for electric assembly tools according to claim 6, characterized in that: The base is provided with a positioning hole, and the base is positioned by bolts passing through the positioning hole.

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