Adjusting device for tightening thread assembly and electric tool
By designing an elastic operating lever that matches the toothed head and the toothed hole, the problem of small thread tightening operation space in the power tool is solved, and convenient one-hand adjustment and expansion of the operating space is achieved, reducing operation difficulty and cost.
Patent Information
- Application Number
- CN202420751982.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-04-12
AI Technical Summary
The thread tightening operation space in existing power tools is small, which leads to difficulty in operation. Especially when tightening or loosening the thread, the operating rod is easily approached or impacted by the base plate, and wear after long-term use causes further reduction in the operating space.
An adjustment device including a first threaded rod member, a second threaded rod member and an elastic operating rod is designed. Through the cooperation of the toothed head and the toothed hole, the elastic operating rod floats in the axial direction, providing sufficient Operate the space and achieve axial limit through the spring groove and bent parts to ensure accurate and convenient adjustment.
It realizes the convenient adjustment of the relative angles of the elastic operating rod and the threaded rod member with one hand, provides sufficient operating space, reduces the difficulty of thread tightening, and has a simple structure and low manufacturing and maintenance costs.
Smart Images
Figure CN222308761U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an adjusting device, in particular to a thread tightening adjusting device. Background Art
[0002] Most of the current power tools have adjustable working states. For example, circular saws generally have the function of adjusting cutting depth and cutting angle. The common way to implement this function is to rotate the circular saw body relative to the base plate along a guide groove on one side of the base plate, thereby adjusting the cutting depth and cutting angle.
[0003] A common way to fix the working state is to tighten the thread. For example, for the circular saw mentioned above, there is a nut on one side of the guide groove, and a hole is provided on the circular saw body on the other side of the guide groove. The bolt passes through the hole and the guide groove and cooperates with the nut. By tightening the thread of the nut and the bolt, the circular saw body can be fixed to the base plate, thereby fixing its working state, such as cutting depth and angle; it can be adjusted again by loosening the thread. The tightening of the thread can generally be done by an operating lever similar to a wrench.
[0004] However, the operating rod has a certain length, and the operating space for thread tightening in actual use is often small, which brings operational difficulties to thread tightening. Utility Model Content
[0005] One of the purposes of the utility model is to provide an adjustment device for tightening a threaded assembly, which has a simple structure and can adjust the axial position of the elastic operating rod relative to the second threaded rod by one hand, so that the relative angle between the elastic operating rod and the second threaded rod can be adjusted more conveniently by one hand, thereby providing sufficient operating space for tightening the thread.
[0006] In order to achieve the above object, the utility model proposes an adjusting device for tightening a threaded assembly, which comprises:
[0007] a first threaded rod;
[0008] A second threaded rod, comprising a toothed head and a cylindrical rod axially extending from the toothed head, wherein the tail end of the cylindrical rod is threadedly connected to the first threaded rod, and the toothed head has a plurality of tooth-shaped portions arranged along its outer circumference;
[0009] an elastic operating rod having a coaxially arranged toothed hole and a circular hole, wherein the toothed hole has a plurality of toothed grooves arranged along its circumferential direction and adapted to the toothed portion, and the elastic operating rod is sleeved on the second threaded rod through the toothed hole and the circular hole; the elastic operating rod can float elastically relative to the second threaded rod in the axial direction;
[0010] In the first state, the toothed hole of the elastic operating rod is engaged with the toothed head of the second threaded rod, so that the elastic operating rod and the second threaded rod can rotate synchronously around the axis of the second threaded rod; when the elastic operating rod floats elastically in the axial direction relative to the second threaded rod, the toothed hole and the toothed head are disengaged to reach the second state, so that the elastic operating rod can rotate relative to the second threaded rod.
[0011] Furthermore, in some embodiments of the utility model, the elastic operating rod includes a first part and a second part overlapping the first part, the first part and the second part are connected by a bending part, the first part and the second part have a gap in the axial direction, the toothed hole and the circular hole are arranged on the first part; the second part is axially limitedly arranged on the cylindrical rod through the hole opened thereon.
[0012] Furthermore, in some embodiments of the present invention, a retaining spring groove is provided on the cylindrical rod, a retaining spring is provided in the retaining spring groove, and the second part is axially limitedly arranged on the cylindrical rod by the retaining spring.
[0013] Furthermore, in some embodiments of the present invention, a cylindrical step having a radial dimension greater than that of the cylindrical rod is provided at the junction of the cylindrical rod and the toothed head.
[0014] Furthermore, in some embodiments of the present invention, the elastic operating rod is provided with a force applying portion extending outward.
[0015] Furthermore, in some embodiments of the present invention, the plurality of tooth-shaped portions are evenly arranged along the outer circumferential surface of the tooth-shaped head, and the plurality of tooth-shaped grooves are evenly arranged along the circumferential direction of the tooth-shaped hole.
[0016] Furthermore, in some embodiments of the present invention, the axial cross-section of the tooth-shaped head is hexagonal.
[0017] Furthermore, in some embodiments of the present invention, the first threaded rod is provided with an external thread, and correspondingly, the second threaded rod is provided with an internal thread.
[0018] Furthermore, in some embodiments of the present invention, the axial end of the toothed head of the second threaded rod has a force application groove; and / or the cylindrical rod of the second threaded rod is provided with a weight-reducing hole groove.
[0019] Another object of the present invention is to provide an electric tool that can realize convenient adjustment of the working state of the electric tool.
[0020] Based on this, the utility model further provides an electric tool, which includes an electric tool body and further includes the adjustment device as described above, wherein the first threaded rod is connected to the electric tool body.
[0021] The electric tool described in the utility model can be a circular saw, and can also be an engraving machine, a jigsaw, a knife saw and other electric tools with a thread tightening structure.
[0022] The adjustment device for tightening the threaded assembly described in the utility model can adjust the axial position of the elastic operating rod relative to the second threaded rod by one hand, so as to achieve the convenient adjustment of the relative angle between the elastic operating rod and the second threaded rod by one hand, thereby providing sufficient operating space for thread tightening.
[0023] The adjusting device for tightening a threaded component of the utility model has a simple structure and low manufacturing, maintenance and use costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 A power tool having adjustable operating conditions is partially shown.
[0025] Figure 2 A cross-sectional view of an adjusting device for tightening a threaded component according to the present invention in a natural state is shown from a top view.
[0026] Figure 3 A schematic diagram of the three-dimensional structure of a second threaded rod in an adjusting device for tightening a threaded assembly according to the utility model is shown in one embodiment.
[0027] Figure 4 A schematic three-dimensional structure diagram of an elastic operating rod in an adjusting device for tightening a threaded component according to the utility model is shown in one embodiment.
[0028] Figure 5 A schematic structural diagram of an adjusting device for tightening a threaded component according to the utility model in a natural state in one embodiment is shown from a top view.
[0029] Figure 6 The state of the adjusting device for tightening a threaded component according to the present invention in a natural state in one embodiment is shown from a front view.
[0030] Figure 7 A cross-sectional view of an adjusting device for tightening a threaded component according to the present invention in a compressed state is shown from a top view.
[0031] Figure 8The state of the adjusting device for tightening a threaded component according to the present invention in a compressed state in one embodiment is shown from a front view. DETAILED DESCRIPTION
[0032] The adjusting device for tightening a threaded component described in the present invention will be further explained and illustrated below in conjunction with the drawings and specific embodiments of the specification. However, such explanation and illustration do not constitute an improper limitation on the technical solution of the present invention.
[0033] Most of the current power tools have adjustable working states. For example, circular saws generally have the function of adjusting cutting depth and cutting angle, and the common way to implement this function is to rotate the circular saw body along the guide groove on one side of the bottom plate relative to the bottom plate, thereby adjusting the cutting depth and cutting angle.
[0034] The common working state fixing method is thread tightening. Figure 1 As shown, for a circular saw, there is a hole on the circular saw body on the other side of the guide groove, and a bolt ( Figure 1 The bolt (not shown) passes through the hole and the guide groove to cooperate with the nut 400. By tightening the nut 400 and the threaded cooperation of the bolt, the circular saw body 100 can be fixed on the base plate 200, thereby fixing its working state, such as cutting depth and angle; by loosening the thread, it can be adjusted again. The tightening of the thread can generally be completed by an operating rod 300 similar to a wrench. However, the operating rod 300 has a certain length. When it is necessary to tighten or loosen the thread, the operating rod 300 needs to be rotated in the clockwise direction. The small thread tightening operation space will cause the operating rod to be very close to the base plate 200 or directly collide with the base plate 200, which brings difficulty to the operation of thread tightening. In addition, after a period of use, the part where the operating rod 300 and the nut 400 cooperate will be worn, and the thread may also be worn, so that the position where the thread of the operating rod 300 is fully tightened is offset closer to the base plate 200, which further reduces the operating space of the operating rod.
[0035] In order to solve the above problem, the utility model provides an adjusting device for tightening a threaded component in one embodiment.
[0036] Figure 2 A cross-sectional view of an adjusting device for tightening a threaded component according to the utility model is shown in one embodiment.
[0037] like Figure 2 As shown, in some embodiments, the adjusting device for tightening the threaded assembly may include: a first threaded rod 1 , a second threaded rod 2 , and an elastic operating rod 3 .
[0038] The first threaded rod 1 is used to connect with a fastened component or device, for example, it is used to connect with the body of an electric tool machine, for example, by passing through a hole on the circular saw body to connect with the circular saw body 100. The second threaded rod 2 is threadedly connected with the first threaded rod 1, and the utility model aims to achieve the tightening or loosening of the thread between the second threaded rod 2 and the first threaded rod 1, so that when the thread is tightened, the position of the circular saw body 100 relative to the guide groove 500 is fixed, and when the thread is loosened, the position of the circular saw body 100 relative to the guide groove 500 is adjustable.
[0039] Figure 3 A schematic diagram of the three-dimensional structure of a second threaded rod in an adjusting device for tightening a threaded assembly according to the utility model is shown in one embodiment.
[0040] like Figure 2 and Figure 3 As shown, the second threaded rod 2 comprises a toothed head 21 and a cylindrical rod 22 axially extending from the toothed head, and the tail end of the cylindrical rod 22 is threadedly connected to the first threaded rod 1. The toothed head 21 has a plurality of tooth-shaped portions 211 arranged along its outer circumference.
[0041] Figure 4 A schematic three-dimensional structure diagram of an elastic operating rod in an adjusting device for tightening a threaded component according to the utility model is shown in one embodiment.
[0042] like Figure 2 and Figure 4 As shown, the elastic operating rod 3 has a coaxially arranged toothed hole 31 and a circular hole 32, wherein the toothed hole 31 has a plurality of toothed grooves 311 arranged along its circumferential direction and adapted to the toothed portion 211 of the second threaded rod 2, and the circular hole 32 is used to allow the elastic operating rod 3 to pass through the second threaded rod. The elastic operating rod 3 is sleeved on the second threaded rod 2 through the toothed hole 31 and the circular hole 32, and the elastic operating rod 3 can elastically float relative to the second threaded rod 2 in the axial direction.
[0043] like Figure 2 , Figure 5 and Figure 6 As shown, in the first state, the toothed portion 211 of the second threaded rod corresponds to the toothed groove 311 of the toothed hole 31, that is, the toothed hole 31 of the elastic operating rod 3 is engaged with the toothed head 21 of the second threaded rod 2. In this case, when an external force is applied to the elastic operating rod 3 so that it moves around the axis of the second threaded rod along the Figure 6 When the second threaded rod 2 rotates in the clockwise direction Q or counterclockwise direction as shown in the figure, the second threaded rod 2 rotates synchronously around its own axis, thereby achieving the tightening (loosening) or loosening (tightening) of the second threaded rod 2 and the first threaded rod.
[0044] In some more specific embodiments, the first state may be a natural state where the elastic operating rod is not subjected to external force. In this case, when the operating space of the elastic operating rod is insufficient, such as Figure 7 As shown, the operator can press the elastic operating rod 3 with one hand to apply an axial pressure F to the elastic operating rod 3, thereby overcoming the elastic force of the elastic operating rod 3 so that the elastic operating rod floats elastically in the axial direction toward the second threaded rod. Figure 7 and Figure 8 As shown, the toothed hole 31 is disengaged from the toothed head 21 to reach a second state. In the second state, the elastic operating rod 3 can rotate relative to the second threaded rod 2. At this time, the elastic operating rod 3 can be adjusted to rotate counterclockwise by a certain angle relative to the second threaded rod 2, thereby leaving sufficient operating space for the elastic operating rod. Then, the axial pressure F is removed, and the elastic operating rod is reset again to a state where the toothed hole 31 is engaged with the toothed head 21 of the second threaded rod 2 under the action of elastic force.
[0045] Of course, in some other optional embodiments, the "first state" (i.e., the state in which the toothed hole 31 is engaged with the toothed head 21 of the second threaded rod 2) can also be achieved by applying an external force to the elastic operating rod, and correspondingly, the "second state" (the toothed hole 31 is disengaged from the toothed head 21) can be achieved by removing the external force.
[0046] In some more specific embodiments, Figure 4 As shown, the elastic operating rod 3 may include a first portion 33 and a second portion 34, the first portion 33 and the second portion 34 are connected by a bent portion 35, the first portion 33 and the second portion 34 are overlapped, and there is a gap P between the two portions in the axial direction. Thus, when an axial pressure F is applied to the first portion 33, the first portion 33 may move closer to the second portion 34 in the axial direction, and when the axial pressure F is removed, the first portion 33 automatically rebounds and resets under the action of elastic force, that is, away from the second portion 34. The tooth-shaped hole 31 and the circular hole 32 are both provided on the first portion 33. Of course, in order to be integrally sleeved on the second threaded rod, a hole is also provided on the second portion 34, and in order to prevent the second portion from being displaced in the axial direction, the second portion 34 is axially limitedly provided on the cylindrical rod 22 of the second threaded rod 2.
[0047] In some more specific embodiments, Figure 2 and Figure 7 As shown, the second portion 34 is axially limitedly disposed on the cylindrical rod 22 of the second threaded rod 2, which can be achieved by providing a retaining spring groove on the cylindrical rod 22 and arranging a retaining spring 4 in the retaining spring groove.
[0048] In some other embodiments, the elastic operating rod 3 can also be set to other structures, for example, the first part and the second part are set separately, the second part is axially positioned on the second threaded rod, and a spring or a similar elastic element is connected between the first part and the second part, so that the first part can float elastically relative to the second part.
[0049] Alternatively, in some other embodiments, an axially limiting step surface may be provided on the second threaded rod, or an axially limiting sleeve may be provided, and a spring or similar elastic element may be provided between the elastic operating rod and the sleeve (or the step surface), so that the elastic operating rod can float elastically in the axial direction relative to the second threaded rod.
[0050] like Figure 3 As shown, in some embodiments of the present invention, the connection between the cylindrical rod 22 and the toothed head 21 of the second threaded rod 2 is further provided with a cylindrical step 23 having a radial dimension larger than the cylindrical rod 22. The cylindrical step can provide axial limitation for the elastic operating rod in the axial outward direction.
[0051] Of course, in some other optional embodiments, since the axial force F is applied in the axially inward direction, the cylindrical step for providing axial limitation in the axially outward direction may not be provided.
[0052] Continue reading Figure 3 In some optional embodiments of the present invention, a force application groove 212 may be further provided at the axial end of the toothed head 21 of the second threaded rod 2. When the elastic operating rod fails, an external tool may be inserted into the force application groove 212 to achieve screwing of the second threaded rod.
[0053] In addition, if Figure 3 As shown, in some optional embodiments of the present invention, the cylindrical rod 22 of the second threaded rod 2 is provided with a weight-reducing hole groove 221, thereby facilitating further reducing the weight of the second threaded rod.
[0054] like Figure 4 As shown, in order to facilitate the application of force to the elastic operating rod to rotate it around the rotation axis, the elastic operating rod 3 can also be provided with a force-applying portion 36 extending outward, thereby increasing the force-applying area and further improving and enhancing the operator's convenience and comfort.
[0055] like Figure 3 and Figure 4As shown, in a preferred embodiment of the present invention, a plurality of tooth-shaped portions 211 are evenly arranged along the outer circumferential surface of the tooth-shaped head 21, and a plurality of tooth-shaped grooves 311 are also evenly arranged along the circumferential direction of the tooth-shaped hole 31. This even arrangement can make the angle of the elastic operating rod relative to the second threaded rod regular and predictable. For example, the elastic operating rod can be rotated and adjusted relative to the second threaded rod according to a certain angle stroke, for example, it can be adjusted by rotating at equal intervals of 30°, 60°, and 90°.
[0056] Of course, in other optional embodiments, the tooth-shaped portions and the tooth-shaped grooves meshing therewith may also be irregularly arranged in their respective circumferential directions, as long as the tooth-shaped portions and the tooth-shaped grooves can mesh with each other.
[0057] Figure 3 An example is shown in which the axial cross section of the toothed head is hexagonal. In this embodiment, the toothed head has a similar structure to a common hexagonal nut, so that it is easy to process and produce it with existing equipment.
[0058] However, those skilled in the art should know that the number of tooth-shaped portions can be set according to the actual needs of adjusting the angle of rotation of the elastic operating rod relative to the second threaded rod each time, and is not limited to Figure 3 In other embodiments, the number of tooth-shaped portions may be 5, 8, 9, or other numbers.
[0059] In addition, Figure 2 In the illustrated embodiment, the first threaded rod 1 is provided with an external thread, and correspondingly the second threaded rod 2 is provided with an internal thread, that is, the tail end of the second threaded rod is sleeved on the periphery of the first threaded rod 1 .
[0060] However, it is known that in other embodiments, it can also be arranged that the second threaded rod is connected to the internal thread of the first threaded rod through its external thread.
[0061] The utility model also provides an electric tool, such as Figure 2 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the electric tool includes an electric tool body, such as a circular saw body 100, and further includes the adjustment device as described above. The first threaded rod 1 is connected to the electric tool body, for example, by passing through a hole on the circular saw body 100. The second threaded rod 2 is threadedly connected to the first threaded rod 1, and a gasket 600 is provided between the tail end of the second threaded rod 2 and the guide groove 500. When the second threaded rod 2 is rotated synchronously by the rotation of the elastic operating rod 3, the thread between the second threaded rod 2 and the first threaded rod 1 can be tightened or loosened. In the state of tightening the thread, the position of the circular saw body 100 relative to the guide groove 500 is fixed, and in the state of loosening the thread, the position of the circular saw body 100 relative to the guide groove 500 is adjustable, thereby achieving the adjustment of the working state of the electric tool, such as the adjustment of the cutting depth and / or cutting angle of the circular saw.
[0062] Since the utility model realizes the adjustment of tightening and loosening of the thread and does not involve the adjustment of the working state of the power tool, the adjustment of the cutting depth and cutting angle of the circular saw will not be described in detail.
[0063] In addition, the electric tool described in the utility model can be a circular saw, and can also be an engraving machine, a jigsaw, a knife saw, and other electric tools with a threaded tightening structure.
[0064] The adjustment device for tightening the threaded assembly described in the utility model can adjust the axial position of the elastic operating rod relative to the second threaded rod by one hand, so as to achieve the convenient adjustment of the relative angle between the elastic operating rod and the second threaded rod by one hand, thereby providing sufficient operating space for thread tightening.
[0065] The adjusting device for tightening a threaded component of the utility model has a simple structure and low manufacturing, maintenance and use costs.
[0066] It should be noted that the prior art part in the protection scope of the utility model is not limited to the embodiments given in the application documents. All prior art that does not contradict the scheme of the utility model, including but not limited to prior patent documents, prior public publications, prior public uses, etc., can be included in the protection scope of the utility model.
[0067] In addition, the combination of the various technical features in this case is not limited to the combination described in the claims of this case or the combination described in the specific embodiments. All technical features recorded in this case can be freely combined or combined in any way unless there is a contradiction between them.
[0068] It should also be noted that the above-listed embodiments are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and similar changes or modifications made therewith are directly derived or easily associated with the contents disclosed by those skilled in the art from the present invention, and should all fall within the protection scope of the present invention.
Claims
1. An adjusting device for tightening a threaded component, characterized in that: include: A first threaded rod (1); A second threaded rod (2), comprising a toothed head (21) and a cylindrical rod (22) extending axially from the toothed head, the rear end of the cylindrical rod being threadedly connected to the first threaded rod, the toothed head having a plurality of tooth-shaped portions (211) arranged along its outer circumference; An elastic operating rod (3) having a coaxially arranged toothed hole (31) and a circular hole (32), wherein the toothed hole has a plurality of toothed grooves (311) arranged along its circumferential direction and adapted to the toothed portion, the elastic operating rod being sleeved on the second threaded rod through the toothed hole and the circular hole, and the elastic operating rod being able to float elastically relative to the second threaded rod in the axial direction; In the first state, the toothed hole (31) of the elastic operating rod is meshed with the toothed head (21) of the second threaded rod, so that the elastic operating rod (3) and the second threaded rod (2) can rotate synchronously around the axis of the second threaded rod; when the elastic operating rod floats elastically in the axial direction relative to the second threaded rod, the toothed hole (31) and the toothed head (21) are disengaged to reach the second state, so that the elastic operating rod (3) can rotate relative to the second threaded rod (2).
2. The adjusting device according to claim 1, characterized in that: The elastic operating rod (3) comprises a first part (33) and a second part (34) arranged overlapping with the first part, the first part and the second part are connected via a bent part (35), a gap (P) is provided between the first part and the second part in the axial direction, the toothed hole (31) and the circular hole (32) are provided on the first part (33); the second part (34) is axially limitedly provided on the cylindrical rod (22) via the hole provided thereon.
3. The adjusting device according to claim 2, characterized in that: The cylindrical rod (22) is provided with a retaining spring groove, a retaining spring (4) is provided in the retaining spring groove, and the second part (34) is axially limitedly arranged on the cylindrical rod (22) by the retaining spring (4).
4. The adjusting device according to claim 1, characterized in that: A cylindrical step (23) having a radial dimension greater than that of the cylindrical rod is provided at the junction between the cylindrical rod (22) and the toothed head (21).
5. The adjusting device according to claim 1, characterized in that: The elastic operating rod (3) is provided with a force-applying portion (36) extending outward.
6. The adjusting device according to claim 1, characterized in that: The plurality of tooth-shaped portions (211) are evenly arranged along the outer circumferential surface of the tooth-shaped head (21), and the plurality of tooth-shaped grooves (311) are evenly arranged along the circumferential direction of the tooth-shaped hole (31).
7. The adjusting device according to claim 6, characterized in that The axial cross section of the toothed head (21) is hexagonal.
8. The adjusting device according to claim 1, characterized in that: The first threaded rod (1) is provided with an external thread, and correspondingly the second threaded rod (2) is provided with an internal thread.
9. The adjusting device according to claim 1, characterized in that: The axial end of the toothed head (21) of the second threaded rod (2) has a force application groove (212); and / or the cylindrical rod (22) of the second threaded rod (2) is provided with a weight-reducing hole groove (221).
10. An electric tool, comprising an electric tool body, characterized in that: It also includes an adjustment device as described in any one of claims 1 to 9, wherein the first threaded rod is connected to the power tool body.